US2471943A - Curtain stretcher - Google Patents

Curtain stretcher Download PDF

Info

Publication number: US2471943A
Authority: US; United States
Prior art keywords: frame; stretcher; curtain; bar; members
Prior art date: 1945-09-21
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired - Lifetime

Application number

US617721A

Inventor

James J Dvorak

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1945-09-21

Filing date

1945-09-21

Publication date

1949-05-31

1945-09-21 Application filed by Individual filed Critical Individual

1945-09-21 Priority to US617721A priority Critical patent/US2471943A/en

1949-05-31 Application granted granted Critical

1949-05-31 Publication of US2471943A publication Critical patent/US2471943A/en

1966-05-31 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F59/00—Supports adapted to retain the shape of particular articles being dried, e.g. incorporating heating means
- D06F59/08—Supports adapted to retain the shape of particular articles being dried, e.g. incorporating heating means for curtains, table cloths, or other articles of sheet form

Definitions

the present invention pertains to a collapsible type of curtain stretcher, primarily adapted for use by housewives or .in small establishments.
the curtain stretcher is simple and inexpensive and furthermore is designed and constructed with improvements for increasing the adaptability and eiiiciency thereof.
Still another object of the invention is the provision of a simplied and easily assembled ⁇ type of collapsible ⁇ curtain stretcher wherein the stretcher pin frame members are adapted to be assembled to position al1 of the stretcher pins in the same plane.
Still another objectof the invention is to provide a collapsible type of curtain stretcher consisting of onlythree easel units one ⁇ of which is adapted to be set up to be self-supporting to faciliremaining two ⁇ easel units thereto.
Still another important object of the invention is the provision of a collapsible type of curtain stretcher including a middle or intermediate easel unit adapted to be self-supporting and to which the ⁇ upper and lower frame members are permanently but adjustably afxed.
An important feature of the invention is the construction of a fiat type of curtain stretcher including an end ⁇ frame unit wherein a rowrof ⁇ stretcher pin carrying blocks are spring pressed into ⁇ frictional engagement with one another, on a common control which is operable for moving the blocks collectivelyfinto position to position the block pins in the same plane as the stretcher pins of the remainingmembers of thevcurtain stretcher frame.
Still another object of the invention isothe provision of an improved and simplified form o f collapsible curtain stretcher consisting of three frame forming units, the assembly means for whi-ch are permanently attached thereto and are adjustable for assemblingthe frame units into desired different sizes to facilitate the stretching of( curtains of different ⁇ sizes.
⁇ An important featureof ⁇ the invention is the construction of an adjustable and collapsible type of curtain stretcher wherein the stretcher pins of the frame membersare all adapted to be disposed in the same plane ⁇ including corner pins, and wherein the frame is adapted to be adjusted to predetermined sizes by positive and properly identified means registering with receiving holes or recesses whereby the proper holes for the correct sizing of the stretcher frame maybe quickly and positively selected.
Another important feature ⁇ of the ⁇ invention is the provision of a collapsible type of ⁇ curtain stretcher consisting of only three easel supported units, provided with rows ⁇ of properly identified size determining recesses for selectively receiving frame bolting or ⁇ securing means whichare permanently identified with the curtain stretcher forming units.
Still another object of the invention is to provide a curtain stretcher wherein a self-supporting intermediate unit permanently and adjustably carries the upper and lower frame members to facilitate ⁇ the fquick and easy setting up of the curtain stretcher frame by attaching ⁇ end units in such a manner that the stretcher pins are all disposed in the same plane and ⁇ wherein corner pins are always provided in all size setupsof the curtain stretcher.
⁇ Another important object of the invention is toprovide a quick set up type of collapsible curtain stretcher, ⁇ wherein the stretching of ⁇ curtains 3 of different sizes is adapted to be accomplished by the adjustment of a lower horizontal frame unit with respect to an upper horizontal frame unit and by the adjustment f en @mi unit which carries a row of pin earrying keys provided with identified sizing means for attachment to the horizontal frame units when the pin carrying keys are retracted, said keys adapted to be simultaneously moved into curtain stretching position. with the exception of ⁇ certain pin carrying heys which are restrained from being moved by the positioning of the lower horizontal frame member.
Figure 1 is a front elevational view of the improved curtain stretcher, partly broken away, but set up for use and illustrating .the positioning of two'of the frame members in dotted lines with respect to the remaining two frame members to illustrate the assembly of the stretcher frame for the stretching of curtains of ditferent sizes;
Figure 2 is -a front elevational View of the iniddle or intermediate self-supporting curtain stretcher unit, with the upper 'and lower horizontal frame members illustrated in collapsed position on the intermediate supporting standard, and furthermore illustrating in dotted lines the positioning of the upper and lower horizontal vframe members in extended position to permit the end frame units to 'be attached thereto; l
Figure 3 is aside elevational view lof the main or intermediate curtain stretcher unit, in the collapsed ior-'m illustrated in Figure 2, and having the rear easel leg egtended into bracing position i0 Support.
Figure 4 is a fragmentary front elevational view of the right-hand side er the curtain. stretcher with the @ad frame. membelfieoved.
Figure 5 isa vertical sectional view taken o n line V-V of Figure 4 showing the easel brace leg of the right-hand frame member in open posi tion;
Figure 6 is an enlarged fragmentary sectional detailed view taken on line VI-VI of Figure 4 illustrating the spring compressed frictional relation-ship of therow of pin carrying blocks or. keys shown yassociated with the common control rod for simultaneously moving the ⁇ pin carrying keys into either open or closed position;
Figure 7 is an ⁇ enlarged fragmentary detail sectional view taken on lille VII-VTI of Figure ⁇ 1 showing the connecting means at the upper left hand corner ⁇ of ⁇ the curtain trame;
Figure 8 is an enlarged detail sectional View taken on line VIII-VIII of Figure 1;
Figure 9 iS. an enlarged transverse [mail4 sectional. View haben 01.1 11.1.1@ of; Figure, 4 with all Qfitil pil?. @ami-Siles here in retracted or operi position such as shown in dotted lines in Figure 4 to facilitate adjustment of the right end frame member and the lower horizontal frame member when the stretcher frame is being. sited:
Figure l0 is a similar enlarged transverse detail section taken on line X-X of Figure 4 with substantially all of the keys moved into curtain stretching position with the exception of twokeys which are prevented from being moved by the adjusted position of the lower horizontal frame member;
Figure l1 is an enlarged fragmentary top plan view of the upper corner of ⁇ a modified form of curtain stretcher frame, wherein the frame member clamping means are permanently carried by the frame members, and wherein the openingsv for determining land adjusting .the size of the curtain ⁇ frame are in the top and side surfaces of the frame members instead of through the front faces as described in connection with the form of cur tain stretcher illustrated in Figures 1 to 10 inclusive;
Figure 12v is a fragmentary front elevational View of the portion of the modified form of curtain stretcher form illustrated in'Fig-ure 11;
Figure 13 is an enlarged fragmentary yfront elevational View of the upper right-hand corner of the modified form of curtain stretcher frame with parts broken away showing the right end member' moved inwardly from the right end of the upper frame member and held in Iplaceloy an improved clamping arrangement which is per'- manently carried by the right end frame member for coaction with sizing vholes mounted in the top surface of the top frame member; said ligure also illustrates thev position of the sizing holes 'in the right end member in substantially the same position as the holes rthrough the right end frame member of the preferred form of curtain stretcher fra-me illustrated in Figure i;
Figure 14 is a fragmentary top plan View of the portion of the modified form of curtain stretcher frame illustrated in Fig-ure 13;
Figure 15 is ⁇ a fragmentary transverse detail sectional view taken on line XV-XV of Figure 13;
Figure 16 is an enlarged fragmentary front elevational view ofthe lower right-hand'corner of the modified form 'of curtainstretcher frame with the right end frame member moved inwardly from the end ofthe lower frame member, and also illustrating a clampinger securing bracket permanently carried by the ⁇ right end frame mem.- -ber for coaction with receiving openings in the lower face of the bottom lframe member;
Figure 17 is a fragmentary sectional view of the modified form of frame taken on line XVII-XVII of Figure 16;
Figure 18 is a fragmentary transverse sectional View taken on line XVIII-XVIII of Figure 16.
the improved collapsible type of curtain stretcher of this invention is adapted to be quick- 1y and easily Set 11p by the average housewife or user and is designed to conveniently have the stretcher frame portion thereofquickly and :ac-Vv .curately assembled, by positive .sizing means permitting adjustment of the fram-e for stretching curtains yof any desired size within the prescribed limits of the frame.
the improved curtain stretcher consists of only three units, which may either removably vor permanently carry securing means for the quick 4and accurater :assembly of the curtain stretcher.L
the three curtain stretcher units are. ofa type whereamr-i943 in the members, l constituting the same, may ⁇ be easily collapsed to permit ⁇ the unit to be assembled in compact'formifor storage or for placement in a storage or shipping: container.
the curtain stretcher comprises a main or intermediate unit, a left end unit ⁇ and a right end unit.
the main oir-intermediate unit is oi the self-supporting type and comprises amain sup ⁇ porting .bar or standard ⁇ I having along longitudinally disposed slot 2 provided therein.
Rigi-dly secured on the lower end ofthe standard I, by ⁇ means of bolts or other suitable fastening means, is a supporting ⁇ foot 3, in the form of a plate, the ends of which project beyond opposite sides of the standard I to serve as a supporting .baseifor the standard. Rigiclly secured onthe.
the lower frame section is adjustably or slidably supported on the low-er portion of the slotted standard I by means of a wing bolt 6 which projects through the slot 2 and through a lower frame hinge mechanism comprising a main hinge plate I of substantially trianuglar for-m having the lower portion thereof bent to form a receiving channel 8.
a main hinge plate I Pivotally supported on the wing bolt B to the front side of the hinge plate I is an auxiliary hinge platei-l the lower end of which is bent outwardly to provide a supporting flange I0.
the lower frame section or unit comprises two lower frame bars Il and I2 yconstructed of wood or other suitable material each of which is cut out or milled to provide a stretcher pin carrying groove I3.
the inner end of the lower frame bar II extends approximately half way into .the receiving channel 8 of the hinge member 1 and is secured to ⁇ said hinge plate I by means of bolts I 4;
the inner end of the lower frame bar I2 extends approximately half way in'to the receiv- .ing channel il of hinge member 'I and is secured to said hinge plate 9 by means of bolts I5.
each of the lower frame bars ⁇ :II and I2 is provided with an angle-shaped bracket I6 to serve as receiving brackets for the Vreception of upperfrarne members, when the middle curtain stretcher unit is collapsed as hereinafter more fully described,
each ofthe lower frame bars I land I2 is provided witlra Arow ⁇ of boltreceiving holes or openings ⁇ Il which are drilled through the thick portion ofthe frame bars and are spaced exactly one inch apart.
the measuring or sizing holes I'I in the lower frame bars, are consecutively numbered from ⁇ 1 to 92 starting at the left end of the lowervframe sectionandcontinuing totheright.
Y Engaged throughtthe backs of the grooved portionsofthe lower frame bars II and I2, and having the pointed receiving ends thereof projecting into ⁇ the grooves I3 of said bars, are a plurality of stretcher pins I8 one of ⁇ whichis positioned ⁇ adjacent each of the sizing holes II ⁇ as clearly illustrated in Figures l and 2.
the two lower curtain stretcher frame bars II and I2 are adaptedto be pivotally swung up ⁇ - wardly into ⁇ substantially parallel relation with the standard I to permit the upper ends thereof to seat in a channel'bracket or pocket I9 secured to the standard I as shown in Figure 2.
the lower frame Section of the curtain stretcher is collapsible and is also adapted to be slidably adjusted upwardly from the lower end of the guide groove 2 toward the upper end thereof, when-the clamping bolt 6 is released.
This adjustable supporting ofthe lower frame ⁇ unit is to permit curtains of different widths to be stretched.
anupper curtain frame section including a hinge unit comprising a main hinge platel 20 ⁇ which is of ⁇ Substantially triangular form and has one margin ⁇ stretcher frame bar 25 which is held in the channel 2i by means of retaining ⁇ bolts or rivets 2S.
a hinge unit comprising a main hinge platel 20 ⁇ which is of ⁇ Substantially triangular form and has one margin ⁇ stretcher frame bar 25 which is held in the channel 2i by means of retaining ⁇ bolts or rivets 2S.
Rigidly secured to the auxiliary hinge plate 23, by means of retaining bolts or rivets 2l, is the inner end of a second top frame bar 28.
Each of the upper frame bars 25 and 28 are also cut out or shaped in the form of a molding by cutting a groove I3 therein through which curtain stretcher pins I8 project.
Each of the upper frame bars 25 and 28 are also provided with ⁇ a row of sizing holes or openings I'Lwhich are spaced exactly one inch apart, and said sizing holes are numbered starting from the left-hand end ofthe upper frame unit with the numberl and continuing consecutively acrossthe frame unit with the last hole being identified by the numeral 92.
each ⁇ of Lsaid iframe bars hasrigidly bolted .-to .the :bac-k thereof "arconnectingpla-te 29 having -.an aperture ,therein fior receiving a, connecting bolt as .hereinafter :more fully described.
a fwing bolt -30 isv eng-aged 4"through registering'zapertures linthe-hinge iplates f2.0-1'an'd-ii23 and through auxeceiving opening-.inthe uppergiportion Aoffthernain *supporting standard I .the locking vbolt 30; ⁇ the ft-wo .upper lframe bars fare .rig-idly ⁇ held fin extended 'p'osition ready/'for use.
the ,left .end side frame fm'emberaor -.bar 33 is of i:the same lengthas theimainstandard l,.;including the ⁇ foot 3 ,l-sogthatt'he lowerfend .of the ⁇ side ibar or member ,'33 may serve .as fa vsupporting foot for the l'left-.hand side of fthe zframe. i
the connectingfplateyl@ of fthelnwe-r ⁇ frame bar H . is adapted to be connected -byxmeans ofA the bolt 32 through any one lof the ysizing .openings Hin ⁇ the bar 33 depending A.upon the horizontal ,positioning of ,thelower frame mem- .ber fora selectediW-idtn ofgcurtain.
.aniimproved-curtain .stretcher is lprovided in which thefiframe .-so .constructed that. ⁇ the upper anddeft -fend members .of thelframe are :adapted .to be ,releasably bolted 01. Isecured ltogether by ysimple fastening means ,and in Which'the lower .horizontal member of fthe frame is adjustable on thexstandard ⁇ :Land ohithfe .side framefmember 33 toward-.or away .-fromjthe .uppers-frame member gto determine the lWidth fof curtains to bestretched. n
One of the important features of the f improved .curtain stretcher is theflconstruction of'theirright fend..frame .unit which is illustrated-indetail.in Heures-.4,5 andf.-
L34 are num- Jaered downwardly; jstartingiwith :1, at thetopwith Mrthe .last i hole i being numbered *54:to vindicatezthe :.niaximurn rwidth to lewhich curtains can be :stretched'on thei frame. If Widerv curtains :arezto cbelstretched, it Willxne'cessitate providingitrans- ⁇ fyerse frame members whichare longer.
the right .end -frame Libar. or imem'b'er l ⁇ 34 * is @adapted :to be .releasably secured :to 'the righthandzend sofi the atop Aframe barflf ⁇ and the "lower "frame bar l2.:by clampingfbolts 3 ⁇ 5rand--36 respectively.
'Thef upper 1 and flower end portions of ⁇ the .rrghtehandwsidebar 34 are-engaged behindthe iupperfandf lower frame members and sadfbar 31 :issfadaptedtto be.
the position of the right-hand bar may be set in the extreme position illustrated in Figure 1 or in a position of adjustment nearer the left-hand bar 33 for stretching a curtain of less length according to the arrangement illustrated in Figure 4.
a rotatably supported curtain stretcher unit comprising a rod or shaft 31 which is rotatably supported in bearing brackets 38, two of which are rigidly secured to the right end curtain :frame bar 34 as clearly illustrated in Figure 6.
a stop ring 39 is integrally or rigidly secured upon the upper portion of the control rod 31 and rests upon the upper supporting bracket 33 to hold the rod in position.
the upper end of the control rod 31 is bent over at right angles to form an operating handle 40.
the control rod 31 is mounted adjacent the outer edge or side of the right end ⁇ frame bar 34 and has pivotally supported thereon a plurality of curtainstretcher keys ⁇ or blocks .4
Each of the stretcher keys or blocks 4I is providedywitha notch or groove 43.
⁇ fromthe ⁇ back thereof is a curtain stretcher pin I8 ⁇ which projects into the groove 43 ⁇ of the key.
the pins I8 engaged in the keys 4I as well as thepins I8 ⁇ in the other frame members havelthe shank portions below the heads of the pins toothed or knurled so that after the stretcher pinsare driven into position they will not work their way out of the keys or frame bars.
the stretcher pins I8 carried by the keys 4l are spaced one inch apart and are positioned to register with the holes or openings ⁇ I1 in the right end frameibar 34.
a coil supporting spring 44 is engaged around the lower portion of the rod 31 between the lower face of the lowermostkey 4I and the lower bracket 38 as illustrated in Figure 6.
an upper coil spring 45 which has the upper end thereof seated against the upper lbracket 38 while ⁇ the lowerv end ⁇ of the spring 45 is seated against the top surfaceof the uppermost key 4 i.
the springs 44 and 45 are so constructed that they work in opposite directions and hold the keys 4I and the separating washers 42 in frlctional contact with one; another so that all of the keys may be simultaneously swung ⁇ 'from their open positions as illustrated in dotted lines in Figure4 to closed curtain stretching positions as illustrated in full lines ⁇ in said ligure. ⁇
the keys are thrown into the full linepositions illustratedin Figures ⁇ hand 4 the ⁇ row of curtain stretcher pins I3 ⁇ car-l riedfbythe keys 'are all positioned in alignment with one another and are all disposed in the same plane with the stretcher pins I8 in the other three members frame.
the pins are all in the same planeand with located in exactly eachv corner of the set up'frame': Il'l'or the purpose of holding the controlrod 31 in propel' alignment against bending; an intermediate bearing bracket 38 is secured to the right end'frame bar ⁇ 34.
⁇ Said bracket is formed with aniapertured plate through which the rod 31 projects.
⁇ i i i i i l For the purposevof supporting the. right end constituting the curtain stretcher frame unit of the curtain stretcher, the right end curtain frame bar 34 has secured on the back thereof a channel-shaped bracket 4 in which the upper end of an easel leg 5 is pivotally supported as illustrated in Figure 5.
Figure 4 of the drawings shows a set ⁇ up for .the stretching of curtains l of a determined width and length.
the clamping bolt ⁇ 6 ofthe ⁇ lower frame member is ⁇ released and the llower frame member is slidably moved upwardly .from the ⁇ full line position of ⁇ Figure l into thedotted line position until the ends of the lower frame bars II and I2 register with the ⁇ sizing openings I1 in the side bars 33 and 34 of the frame.
the control rod31, of the right end frame unit is swung to move the stretcher keys intoithe dotted line positions illustrated in Figure 4 so that the individually numbered sizing holes I1 in the bar 34 are exposed to permit the bolts ⁇ 32 ⁇ and 36 of the lower framemember to be inserted in the respective selected sizing holes I1 of the side bars 33 and 34.
Such a positioning of the lower frame member will permit curtains to be stretched to the selected width and to the full length of the curtain frame.
the upper and lower frame members ⁇ are bolted to the bar 34 by ⁇ means of the upper clamping bolt 35 and the lower clamping bolt 36 which are engaged through the last openings of said upper and lower frame members ⁇ to set the curtain stretcher for a selected width lessthan the maximum width of the curtain stretcher adjustment and for the full stretching length ofthe frame.
the handle 40 of the control rod 31 is rotated to simultaneously move all of the stretcher keys 4I from thedotted line open positions over into curtain stretching positions in contact with the ⁇ front surface of the bar 34.
the improved curtain stretcher frame may be simply and quickly adj-usted by means of theV clamping bolts and the individually designated sizing holes l1, in the various frame members, so that no particular skill or degree of 'intelligence is required for perfectly ⁇ setting up a frame fora definite size of curtain: stretching.
the sizing of. the frame may thus be readily accomplished in a very short time with ease' and' celerity for stretching curtains to any desired width and length within the limits of the' frame.
FIG. 1'1 to 18 inclusive' a modified form of curtain stretcher is' illustrated which is substantially' like the curtain stretcher illustrated in Figures l' to' 10 inclusive, with the exception that the upper, lower and left end framev members areI of slightly different cone struction with respect to the location of the individually designated sizing hol'es.
the top frame member consists of two top frame bars 46 and 41 the adjacent ends' of which are secured toh'inge plates 20' and 23V ⁇ respectively ofthe upper hinge unit carriedy on the upper portion ofA the intermediate or m'ain standard I.
Each of the upper frame bars et and 4T is provided with a row of spaced sizing holes illustrated in Figures 'I1- and 114.
The' sizing openings 48 are spaced one inch' apart with thefirst sizing opening on the left end of the member 4&5v arranged so that it will be spaced one' inch from' the upper stretcher pin IB in the' left endV side frame bar 49 of the modified form of stretcher frame.
the sizing openings 48 in the frame members 46 and' 41 are numbered consecutively from 1' to 92' as' a convenience lor adjusting the frame' for stretching a curtain to a ,predetermined or selected length.
the left end frame bar' 49 is provided with sizing holes 50' in the outside face thereof. Rigidly secured to the back of the' top left end frame member 46 is one end of an angle bracket having ahead. 52 which is' provided with an Yinternally' threaded opening through which a clamping bolt 53 is threaded. vThe inner rend of 'the bolt 53 is' provided with a stop' ring 54 rigidly formed a short distance from the end of the screw bolt shank to leave a' clamping stud 55 which is adapted ⁇ to project' into the uppermost hole 50 in the end'bar t9 to hold the end bar rigidly clamped ⁇ against the outer end of the top frame bar 46 when the' clamping bolt v5?
the lower frame member consists of two lower frame barsf 56 which are respectively connected to. hinge plates 1f' and 9 similar to'y the arrangement illustrated in Figure 1.
Each of the lower frame bars 56 is cut out to form at groove I3 intofwhich the curtain stretcher pins i8 project.
Eachf of the lowerA frame bars 56 is also provided withv a; plurality of sizing' holes 5:1 in the bottom face thereof spaced one inch'4 apart to' register with the stretcher pins i3.
the outer or left-hand end of. the lower left frame bar 5B has rigidly secured on.- the back' thereof. an' angle bracket 5ft provided with. a clamping bolt 53 similar to the arrangement' for the upper frame member illustrated in Figures 11v and 12'.
a permanent' clamping device forv securing thellower end' of the left end fra-me .bar 49 to one end of the lower left-hand frame bar 56y is thus also provided and eliminates anydanger" of the frame' clamping member froml becoming detached and lost.
the changed form of curtain stretcher frame is completed by'a right end frame' unit compris'- ing a right end' frame bar' 58 the'l front' face of which is provided with. a plurality ofV spaced aligned sizing holes'5'9 which are spaced one inch apart. and aire properly identi'hedr'by' a series of identincation numbers' placed" conveniently on the iront face of' they left side frame bar 58.
the identification numberson the frame' bar 58 start at the upper vend and continue downwardly', said identiiicati'on numbers ranging from 1' to 54 for a curtain stretcher trame designedfor'stretching curtains to a in'axi'mum'width of 54 inches.
The' upper portion of'the control rod 3l projects through apertures provided in a pair of spaced lugs or ears t' forming an integral part of oneiian'geol an upper clamping bracket which includes a channel-shape'dbody section 6I ⁇ which engages around' the back of the upper portion of the side frame' bar 58 and is rigidly secured thereto by means of 'screws' or other suitable means.
auxiliary' or' top frameI barv clamp'- ing unit consisting of a plate or flange 62' dis'- posed at right angles to one side' ofthe vchannel body section GI and' projecting' above the' same.
vThe upper portion of the plate" 62 is bent outwardlyv at right angles to ⁇ provide a top flange 63' having' an internally threaded collar through which a clamping bolt 64' is threaded.
a frame clamping unit for releas'ably con-'- necting thev upper' end' ofthe right end frame' bar 58 to the upper' frame bar 41 is permanently carried on the'I end frame bar 58 to obviate misplacement or loss of the clamping means, which sometimes occurs when removable clamping bolts are used.
the auxiliary clamping plate 62' has the lower end thereof bent outwardly to form a stop iiange 61 against whichv the lower face of the top stretcher frame bar His adapted to frame bar 5B.
a lower clamping unit is slidably engaged on the frame bar 58 and comprises two integrally connected substantially channel-shaped members disposed at sub-i stantially right angles to one another.
One of the channel-shaped members is adapted to be engaged on the end frame bar 58 and comprises albracket strip or plate 68 provided with an integral back ⁇ flange iis disposed at right angles to the plate 68.
the bracket plate 6B is adapted to seat against the inner side of the frame bar 58 while the flange 69 seats against the back surface of said bar as illustrated in Figure 15.
a stop ring or circular flange 'I3 is integrally formed on the ⁇ threaded shank of the bolt ⁇ l2. to the insideof a plain tip or stud 14 which when thebolt 1.2 is threaded inwardly is adapted to engage in ⁇ one of the holes 59 .of the bar 58 to hold the corner ⁇ clamping bracket secured in a predetermined set position on the right end frame bar 58.
the lower frame bar bracket section comprises a back plate l5, a ⁇ short top flange 'lli formed at ⁇ right angles thereto adapted to seat against the top edge of the bar 56.
a bottom plate 'l1 Integrally formed at right angles to the ⁇ lower end of ithe back plate 15 is a bottom plate 'l1 having an openingtherein to register with one of the bottom holes 51 of ⁇ the bar 5t.
a front flange 'i8 is integrally formed on the front end and at right angles to the bottom plate 11 and seats against ⁇ the iront surface of the lower portion of ⁇ the lower frame bar t.
Integrally formed atright angles to the second edge of the bracket plate Gli and opposite the bracket bottom plate 11 is a bolt supporting flangel havingintegrally formedv thereon an internally threaded colla-r or sleeve 8l!
is provided withan integral stop flange or ring 82 formed around the inner endof ⁇ a plain tip or stud 33.
the plain stud 83 of the clamping bolt 8l is positionedso ⁇ that it can project through the ⁇ opening in the bracket bottom plate ll and projecting into a selected oneof the sizing holes 5l provided in the bottom ⁇ surface of the ⁇ lower
the lower right-hand corner frame bracket maybe slidably adjusted on the lower frame bar 56 and may alsobe adjusted vertically on the right end frame bar 58 to permit the modified form of curtain stretcherframe to be adjusted for stretching curtains of different lengths widths.4
the main supporting standard as well as the side frame members 49 and 58 are each provided witha pivoted easel type leg similar to the arrangement provided for the. curtain stretcher illustrated in Figure 1.
Another important feature is ⁇ the arrangement whereby the lower frame member and the right end frame unit may be adjusted with respect to one another and with respect to the "top frame member to permit curtains of diierent sizes to be stretched on the curtain stretcherpins of the various frame members, all of said pins being disposed in the same plane with a pin located in each of the frame corners.
a collapsible type of curtain stretcher comprising ⁇ endframe members, leg means engaged thereon for bracing the frame members in posi-, tion to assist in supporting the curtain stretcher, a self-supporting intermediate supporting unit, upper and lower collapsible ⁇ frame members pivotally supported on the intermediate unit, means for adjusting and then ⁇ locking one of saidcollapsible frame members in extended position on thesupporting unit, means for locking the other of said collapsible ⁇ frame members in extended position on said intermediate supporting unit, clamping means connecting one of said end frame members to the extended upper and lower collapsible frame members, clamping means for clamping the other end frame member in adjusted position on thecollapsible upper and lower frame members to form a curtain stretcher frame of a predetermined size, said collapsible upper and lower frame members and the left and right end frame members having openings therein for selectively receiving the clamping means for properly i i sizing the curtain frame, curtain stretcher pins carried by the left end frame member and the
⁇ A ⁇ collapsible type of curtain stretcher comprising ⁇ upper, lower and end frame members 17 to be simultaneously moved into retracted positions by the rotation of the control rod in one direction and also adapted to be simultaneously moved into curtain stretching positions upon the frame bar with the rotation of the control rod in an opposite direction.
a frame comprising three pin carrying frame members connected to form three sides of a stretcher frame with the pins on said members all disposed in the same plane, said pin carrying frame members having numbered sizing openings therein and a fourth frame unit comprising a frame bar having numbered sizing openings therein, clamping mechanisms for engaging selected sizing openings to clamp the end frame bar to two of the three frame members to form a stretcher frame of a predetermined size, spring controlled pin carrying stretcher blocks, and means for adjustably supporting the blocks on said frame bar and for moving the blocks to position the pins thereon in the plane of the pins of the remaining three frame members to provide a stretcher frame wherein all of the pins are disposed in the same plane and wherein the four corners of the frame each has a stretcher pin engaged therein.
a curtain stretcher comprising a frame constructed of four frame sections, pins rigidly secured on three of said frame sections and all disposed in the same plane, pin carrying supports rotatably carried by the fourth frame section, means for rotating said supports to position the pins thereon in the plane of the pins on the three ⁇ frame sections, separators between said supports, and spring means for holding the separators and supports in frictional contact with one another to facilitate selective operation of the pin carrying supports.
a curtain stretcher comprising a frame constructed of four frame sections, three of which have stretcher pins rigidly secured thereon With all of said pins disposed in the same plane, the fourth frame section having stretcher pin carrying supports rotatably supported thereon in frictional contact with one another to permit the pin supports to be moved collectively or individually to position the pins thereon in the planes of the pins on the other three frame sections after the fourth frame section is secured in place, and springs on the fourth frame section for resiliently forcing the pin supports on said fourth frame section into frictional contact with one another from opposite directions to facilitate selective operation thereof.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Curtains And Furnishings For Windows Or Doors (AREA)

Description

4 Sheets-Sheet 1 OOOooooooocoKoL-ooooooooooooooooooooouooq 1g E NN May 31, 1949.

Filed Sept. 21, 1945 May 31, 1949. J. J. DvoRAK CURTAIN STRETCHER Filed sept. 21, 1945 4 Sheets-Sheet 2 May 31, 1949. 1.1. DVORAK 2,471,943

CURTAIN STRETCHER Filed spt. 21, 1945 4 sheets-sheet s V K l@ 1 JUL/emr z/mes rZ'yUl-'H/r 1 J. J. DVQRAK CURTAIN STRETGHER May 3l, 1949.

4 Sheets-Sheet 4 Filed Sept. 21, 1945 if 77 7g X52 'tate the attachment of the Patented May 31, 1949 UNITED STATES PATENT OFFICE CURTAIN STRETCHER "James J. `bivorak,Chicago, Ill. Application September 21, 1945, Serial No. 617,721

1G Claims.

tain stretchers `and adjustthe same to required sizes with only the use of scale markings on the frame members. A further inconvenience and objection to the `use of the old type of curtain stretchers is the factthat the end frame members overlap the horizontal frame members in such a manner that the curtain stretching pins on said end and horizontal members are disposed in different planes requiring `the ends of the curtains to be supported on pins which are` on a level different from the level of the pins on which `the longitudinal edges `of the curtains are engaged. The present invention pertains to a collapsible type of curtain stretcher, primarily adapted for use by housewives or .in small establishments.

The curtain stretcher is simple and inexpensive and furthermore is designed and constructed with improvements for increasing the adaptability and eiiiciency thereof.

It is an object of this invention to provide a collapsible type of` curtain stretcher` of a minimum number of units adapted to be readily assembled and sized.

It is also an object of this invention to provide a collapsible `type of curtain stretcher consisting of only three group units adapted to be readily assembled and sized by means of a series of separately identified fastener receiving openings to insure convenient and positive sizing of curtains. 1 Still another object of the invention is the provision of a simplied and easily assembled `type of collapsible `curtain stretcher wherein the stretcher pin frame members are adapted to be assembled to position al1 of the stretcher pins in the same plane.

It is furthermore an object of the invention to provide a collapsible type of curtain stretcher including anend lframe member which carries spring controlled frictionally contacting pin-carrying blocks adapted to be swung collectively or `individually into and out of stretching position toy position the stretcher pins for said end member in the plane of the pin members of the remaining frame members of the 'curtain stretcher.

Still another objectof the invention is to provide a collapsible type of curtain stretcher consisting of onlythree easel units one` of which is adapted to be set up to be self-supporting to faciliremaining two `easel units thereto. l l

- It is an important object of this` invention to provide an adjustable type of curtain stretcher wherein` `the stretcher pins of the frame members are all adapted to be positioned in the same plane, and wherein there is always a pin in each corner of the frame for all sizes to which the curtain stretching frame may be adjusted.

Still another important object of the invention is the provision of a collapsible type of curtain stretcher including a middle or intermediate easel unit adapted to be self-supporting and to which the `upper and lower frame members are permanently but adjustably afxed.

An important feature of the invention is the construction of a fiat type of curtain stretcher including an end `frame unit wherein a rowrof` stretcher pin carrying blocks are spring pressed into` frictional engagement with one another, on a common control which is operable for moving the blocks collectivelyfinto position to position the block pins in the same plane as the stretcher pins of the remainingmembers of thevcurtain stretcher frame. o o l o Still another object of the invention isothe provision of an improved and simplified form o f collapsible curtain stretcher consisting of three frame forming units, the assembly means for whi-ch are permanently attached thereto and are adjustable for assemblingthe frame units into desired different sizes to facilitate the stretching of( curtains of different` sizes.

`An important featureof `the invention is the construction of an adjustable and collapsible type of curtain stretcher wherein the stretcher pins of the frame membersare all adapted to be disposed in the same plane `including corner pins, and wherein the frame is adapted to be adjusted to predetermined sizes by positive and properly identified means registering with receiving holes or recesses whereby the proper holes for the correct sizing of the stretcher frame maybe quickly and positively selected.

Another important feature` of the` invention is the provision ofa collapsible type of `curtain stretcher consisting of only three easel supported units, provided with rows `of properly identified size determining recesses for selectively receiving frame bolting or` securing means whichare permanently identified with the curtain stretcher forming units. o l, Still another object of the invention is to provide a curtain stretcher wherein a self-supporting intermediate unit permanently and adjustably carries the upper and lower frame members to facilitate `the fquick and easy setting up of the curtain stretcher frame by attaching` end units in such a manner that the stretcher pins are all disposed in the same plane and` wherein corner pins are always provided in all size setupsof the curtain stretcher. `Another important object of the invention is toprovide a quick set up type of collapsible curtain stretcher,` wherein the stretching of` curtains 3 of different sizes is adapted to be accomplished by the adjustment of a lower horizontal frame unit with respect to an upper horizontal frame unit and by the adjustment f en @mi unit which carries a row of pin earrying keys provided with identified sizing means for attachment to the horizontal frame units when the pin carrying keys are retracted, said keys adapted to be simultaneously moved into curtain stretching position. with the exception of `certain pin carrying heys which are restrained from being moved by the positioning of the lower horizontal frame member.

For the attainment lof the foregoing nd other objects `and. advantages,- the invention preferably consists in the details of construction and the arrangement and combination of the parts to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings.

On the drawings:

Figure 1 is a front elevational view of the improved curtain stretcher, partly broken away, but set up for use and illustrating .the positioning of two'of the frame members in dotted lines with respect to the remaining two frame members to illustrate the assembly of the stretcher frame for the stretching of curtains of ditferent sizes;

Figure 2 is -a front elevational View of the iniddle or intermediate self-supporting curtain stretcher unit, with the upper 'and lower horizontal frame members illustrated in collapsed position on the intermediate supporting standard, and furthermore illustrating in dotted lines the positioning of the upper and lower horizontal vframe members in extended position to permit the end frame units to 'be attached thereto; l

Figure 3 is aside elevational view lof the main or intermediate curtain stretcher unit, in the collapsed ior-'m illustrated in Figure 2, and having the rear easel leg egtended into bracing position i0 Support. the ubit! Figure 4 is a fragmentary front elevational view of the right-hand side er the curtain. stretcher with the @ad frame. membelfieoved. inwardly from the ends of the yhoiiz'eriijfal frame members, and, illstraiins'ihe Qui-Pf-.iliefvay ppiiien Qf the ein carrying keys dotted lines ab@ elseshowing 'the keys moved yinto full line curtain stretching position after the end members are bolted into] place, with the lower horizontal frame member acting as Stop t0 caus tra 0i the piri'arrying' ters' i@ be retained in open or retracted position to permit the fastening means to be Aengaged in predetermined holes in the right-hand end member vand in the lower horizontal frame member to permit stretching of a curtain to a predetermined size;

Figure 5 isa vertical sectional view taken o n line V-V of Figure 4 showing the easel brace leg of the right-hand frame member in open posi tion;

Figure 6 is an enlarged fragmentary sectional detailed view taken on line VI-VI of Figure 4 illustrating the spring compressed frictional relation-ship of therow of pin carrying blocks or. keys shown yassociated with the common control rod for simultaneously moving the `pin carrying keys into either open or closed position;

Figure 7 is an `enlarged fragmentary detail sectional view taken on lille VII-VTI of Figure `1 showing the connecting means at the upper left hand corner` of` the curtain trame;

Figure 8 is an enlarged detail sectional View taken on line VIII-VIII of Figure 1;

Figure 9 iS. an enlarged transverse [mail4 sectional. View haben 01.1 11.1.1@ of; Figure, 4 with all Qfitil pil?. @ami-Siles here in retracted or operi position such as shown in dotted lines in Figure 4 to facilitate adjustment of the right end frame member and the lower horizontal frame member when the stretcher frame is being. sited:

Figure l0, is a similar enlarged transverse detail section taken on line X-X of Figure 4 with substantially all of the keys moved into curtain stretching position with the exception of twokeys which are prevented from being moved by the adjusted position of the lower horizontal frame member;

Figure l1 `is an enlarged fragmentary top plan view of the upper corner of `a modified form of curtain stretcher frame, wherein the frame member clamping means are permanently carried by the frame members, and wherein the openingsv for determining land adjusting .the size of the curtain `frame are in the top and side surfaces of the frame members instead of through the front faces as described in connection with the form of cur tain stretcher illustrated in Figures 1 to 10 inclusive;

Figure 12v is a fragmentary front elevational View of the portion of the modified form of curtain stretcher form illustrated in'Fig-ure 11;

Figure 13 is an enlarged fragmentary yfront elevational View of the upper right-hand corner of the modified form of curtain stretcher frame with parts broken away showing the right end member' moved inwardly from the right end of the upper frame member and held in Iplaceloy an improved clamping arrangement which is per'- manently carried by the right end frame member for coaction with sizing vholes mounted in the top surface of the top frame member; said ligure also illustrates thev position of the sizing holes 'in the right end member in substantially the same position as the holes rthrough the right end frame member of the preferred form of curtain stretcher fra-me illustrated in Figure i;

Figure 14 is a fragmentary top plan View of the portion of the modified form of curtain stretcher frame illustrated in Fig-ure 13;

Figure 15 is `a fragmentary transverse detail sectional view taken on line XV-XV of Figure 13;

Figure 16 is an enlarged fragmentary front elevational view ofthe lower right-hand'corner of the modified form 'of curtainstretcher frame with the right end frame member moved inwardly from the end ofthe lower frame member, and also illustrating a clampinger securing bracket permanently carried by the `right end frame mem.- -ber for coaction with receiving openings in the lower face of the bottom lframe member;

Figure 17 'is a fragmentary sectional view of the modified form of frame taken on line XVII-XVII of Figure 16; and

Figure 18 is a fragmentary transverse sectional View taken on line XVIII-XVIII of Figure 16.

As shown on the drawings:

The improved collapsible type of curtain stretcher of this invention is adapted to be quick- 1y and easily Set 11p by the average housewife or user and is designed to conveniently have the stretcher frame portion thereofquickly and :ac-Vv .curately assembled, by positive .sizing means permitting adjustment of the fram-e for stretching curtains yof any desired size within the prescribed limits of the frame.

The improved curtain stretcher consists of only three units, which may either removably vor permanently carry securing means for the quick 4and accurater :assembly of the curtain stretcher.L The three curtain stretcher units are. ofa type whereamr-i943 in the members, l constituting the same, may `be easily collapsed to permit `the unit to be assembled in compact'formifor storage or for placement in a storage or shipping: container.

l The curtain stretcher comprises a main or intermediate unit, a left end unit` and a right end unit. The main oir-intermediate unit is oi the self-supporting type and comprises amain sup `porting .bar or standard `I having along longitudinally disposed slot 2 provided therein. Rigi-dly secured on the lower end ofthe standard I, by `means of bolts or other suitable fastening means, isa supporting `foot 3, in the form of a plate, the ends of which project beyond opposite sides of the standard I to serve as a supporting .baseifor the standard. Rigiclly secured onthe. :back` of the upper portion of the s-tandard I is a channelshaped metal bracket 1I having engaged between the opposite flanges or blades thereof the `upper chamfered end of an easel leg 5. The standard 1I, together with the leg 5,\form a self-supporting `easel on which the upper 'and lower curtain stretcher frame members lare permanently and adjustably engaged. Whenv the self-supporting. easel is opened the leg 5 is swung rearwar-dly into the inclined position shown in Figure 3 until the chamfered upper end of lthe leg engages flatly against the back surface ofthe upper portion of the standard I` thereby making lthe intermediat-e unit of the curtain stretcher self-supporting.`

The stretcher frame vcomprises a lower frame section, an upper frame section, a left end section and a right end section. The lower frame section is adjustably or slidably supported on the low-er portion of the slotted standard I by means of a wing bolt 6 which projects through the slot 2 and through a lower frame hinge mechanism comprising a main hinge plate I of substantially trianuglar for-m having the lower portion thereof bent to form a receiving channel 8. Pivotally supported on the wing bolt B to the front side of the hinge plate I is an auxiliary hinge platei-l the lower end of which is bent outwardly to provide a supporting flange I0.

The lower frame section or unit comprises two lower frame bars Il and I2 yconstructed of wood or other suitable material each of which is cut out or milled to provide a stretcher pin carrying groove I3. The inner end of the lower frame bar II extends approximately half way into .the receiving channel 8 of the hinge member 1 and is secured to` said hinge plate I by means of bolts I 4; The inner end of the lower frame bar I2 .extends approximately half way in'to the receiv- .ing channel il of hinge member 'I and is secured to said hinge plate 9 by means of bolts I5. When the two lower frame bars :II and I2 are in their lower positions, to form the bottom of the curtain stretcher frame, .the inner end of the `frame bar `I2 projects into the hinge `channel v3 and is aligned with the inner end of the frame bar II as clearly illustratedin Figure 1, and said bars by means iof the channel 8 are adapted to be `rigidly held in aligned position at a set of predetermined selected height from the bottom of, the standard I by sliding Ithe bolt IB 'into a desired position on said standard and then tightening `the bolt ii to hold the lower frame member in a selected position. Each of the lower frame bars `:II and I2 is provided with an angle-shaped bracket I6 to serve as receiving brackets for the Vreception of upperfrarne members, when the middle curtain stretcher unit is collapsed as hereinafter more fully described,

llior the purpose of ,quickly1v and accurately measuring the lengthof curtainswhich are to be stretched, each ofthe lower frame bars I land I2 is provided witlra Arow `of boltreceiving holes or openings `Il which are drilled through the thick portion ofthe frame bars and are spaced exactly one inch apart. The measuring or sizing holes I'I, in the lower frame bars, are consecutively numbered from `1 to 92 starting at the left end of the lowervframe sectionandcontinuing totheright.Y Engaged throughtthe backs of the grooved portionsofthe lower frame bars II and I2, and having the pointed receiving ends thereof projecting into `the grooves I3 of said bars, are a plurality of stretcher pins I8 one of` whichis positioned` adjacent each of the sizing holes II `as clearly illustrated in Figures l and 2.

. The two lower curtain stretcher frame bars II and I2 are adaptedto be pivotally swung up`- wardly into` substantially parallel relation with the standard I to permit the upper ends thereof to seat in a channel'bracket or pocket I9 secured to the standard I as shown in Figure 2.

From the foregoing description it will be noted thatlthe lower frame Section of the curtain stretcher is collapsible and is also adapted to be slidably adjusted upwardly from the lower end of the guide groove 2 toward the upper end thereof, when-the clamping bolt 6 is released. This adjustable supporting ofthe lower frame `unit is to permit curtains of different widths to be stretched.

Permanently but adjustably connected to the upper end of the easel standard I is anupper curtain frame section including a hinge unit comprising a main hinge platel 20` which is of `Substantially triangular form and has one margin `stretcher frame bar 25 which is held in the channel 2i by means of retaining `bolts or rivets 2S. Rigidly secured to the auxiliary hinge plate 23, by means of retaining bolts or rivets 2l, is the inner end of a second top frame bar 28. Each of the upper frame bars 25 and 28 are also cut out or shaped in the form of a molding by cutting a groove I3 therein through which curtain stretcher pins I8 project. Each of the upper frame bars 25 and 28 are also provided with `a row of sizing holes or openings I'Lwhich are spaced exactly one inch apart, and said sizing holes are numbered starting from the left-hand end ofthe upper frame unit with the numberl and continuing consecutively acrossthe frame unit with the last hole being identified by the numeral 92. While the sizing holes of the upper and lower frame sections have been numbered `from 1 to 92 for a `maximum length of curtain of Figure 2, wherein the lower portions of the upper `bars 25` and 28 are adaptedto `seat in the angle 52 (brackets iliirofl :the ylower fbars ftherebly supporting l'both the lower ifframe fbars.: and "the upper aframe :bars in vcollapsedposition :fon .the intermediate .easel, ywhich is of .the=se1f.supporting type `when `the reasel fleg .5 is fextended rearwardlynaslshown 'IKE/Figure 3.

/fli'or the "purposes fof permitting the outer .ends :of the lower frame-'bar tl rand the .upper frame @bar ,'25 'to be releasably connected :to .a sleit end 'fsection .of the fcurtain stretcher, each `of Lsaid iframe barshasrigidly bolted .-to .the :bac-k thereof "arconnectingpla-te 29 having -.an aperture ,therein fior receiving a, connecting bolt as .hereinafter :more fully described.

When the improved .curtainrstretcherzis'to :be set up for use, the .middleiormain un'itisfset up trst, This is donebymerelymovingathe `easel .leg Efinto the `open position .illustrated in Fig.- .ure l 3 thereby permitting the middle standard v1I to lbe supportedlby the foot and therleg-lina slightly inclined position. The 'top frame .bars 25 and 28 which formxtheetop longitudinal mem- Ybor. of /the'frame arefrstswung'from .the fullline Ipositions `of FigureBNupwardly into the dotted fline 1positions. lWhen the "upper iframe `:bars .125 land .,2'8 Iare moved into curtain stretching :posi- @tion thelinner endof .the top-.bar :2:8 vis engaged in the .channelz I'ofthe-.hinge.unitztherebyalign- .ingtheltwo top'frame bats.25 rand t28, as-shown .-in Vfullilines inFigure :1, ato '.hold .the top iframe bars 25 and 28 in horizontal alignment. A fwing bolt -30 isv eng-aged 4"through registering'zapertures linthe-hinge iplates f2.0-1'an'd-ii23 and through auxeceiving opening-.inthe uppergiportion Aoffthernain *supporting standard I .the locking vbolt 30; `the ft-wo .upper lframe bars fare .rig-idly `held fin extended 'p'osition ready/'for use.

lAfter the upper fram'eibars are extended into :curtain stretching; .positiomtheitwohinge'dly connected lower framefbars -sl l and |2 are -lpivotally swung downwardly *from Sthe full line Lpositons illustrated. in :Figure 12intothei dotted yline fpositions of :said -gure therebylpermitting 'the inner :endof thellower horizontaliframebar |'2fto'seat in thelchannelB-ofntheshinge pl'atef'ltov'align the two lower -frame bars -in @a horizontal position substantially parallel to the upper stretcher Aframe member. :After 'thett-.wo'y lower frame forming bars Il and l2 havefbeen moved yinto their open .curtain stretchingsposition; the :entire lower frame unit may be sliclablyfadjusted upwardly on .lthednain4 standard-.I by loosening thefllockingbolt A6 to =.per-rnit the samertoslidein the fgroove'2 until the Y lower yframef` member :is Tin a selected A.position 4to define' a predetermined-width between atheupper Aand lower frame sectionsff the curtain stretcher. Aftery the lower-"frame lsection isf setL in ,.a ldesired position, the locking boit is l tightened 4to-'hold the lower fra-me section clamped in place.

eWith-Ithe. two-upper andfilowerY framelsections :Qfmhecurtain stretcher:moved-finto their open ,positions as-` described, tithe "left-hand -unit'- ofi the .stretcher frame iswadaptedi'tolibe iq-uickly' and se- `curely attachedto-.t-he connectingfpla-tes iZSisby mea-nstof a wing-bolt-z or otherfsuitable securing devices such as an upper clamping boltI-'and-ia lower clamping bolt 32.

--The left lend -u-nit :of the `curtain stretcher., frame With ,the :tightening 'Of l comprisesca side frame-barili() whichisralsolrm formed With a .curtain `stretcher :groove '|13 .throughvfwhchfside curtainfstretcher spins-18, pr .jectforwardly .in-to .thergroove Thex side frame Mbar.r 33 v is a1so,-provided with aiplurality of spaced @11er-1661 Sizing #holes "vor i openings :'.l 1 which are .15

spaced. one :inch apart :and `1=eeister lwit-h `theside stretcherpins d8 in fthe'side bar The 4sizing holes I-'l are consecutively numbered starting from the ytop 'and continuing downwardly read ing `from I1 ito. 54 lwhich l determines the maximum -Width of .ra-.c-urtainewhich can be stretched'onithe stretcher. If desired, .ftheleft end frame ban-33 may lne-made. longer -to accommodate :more sizing openingsfto .permit ylarger curtains to be stretched if: necessary. The ,left .end side frame fm'emberaor -.bar 33 is of i:the same lengthas theimainstandard l,.;including the `foot 3 ,l-sogthatt'he lowerfend .of the `side ibar or member ,'33 may serve .as fa vsupporting foot for the l'left-.hand side of fthe zframe. i

Boltedor otherwisefsecured 'to the back of .the side lframe member.3.3 .is a .bracketll .to Whichfthe .iupperaendzof an-leasel .leg 5 :is pivotallyf supported. The-upper .endbf .the leg 5,'oi -the side :member :33, istchamfered or beveled to permit thelegsazon the -backs of the main orintermediatestandard fl :andthe -side iframe .member33 to be lextended rrearwardly to brace .the stretcher 'frameinmosh tion. `By bolting theupper endsofthe side frame member 33 .to the top yconnecting lplate `29,1;he curtain frame bars 125-andf33 may `.be rigidly clamped together by means of the bolt '-.3\|4so:that zthepins, in the side frame -bar eahefdispose'd fin the sameplanepas the stretcherzpinsi-mboth `the upper( and .lower horizontal -frame .sections ofthe ldevice land. :with a pin in ,exactly Aeac11;corner of .the frame. .The connectingfplateyl@ of fthelnwe-r `frame bar H .is adapted to be connected -byxmeans ofA the bolt 32 through any one lof the ysizing .openings Hin `the bar 33 depending A.upon the horizontal ,positioning of ,thelower frame mem- .ber fora selectediW-idtn ofgcurtain.

-ltwill thus be noted that .aniimproved-curtain .stretcher is lprovided in which thefiframe .-so .constructed that.` the upper anddeft -fend members .of thelframe are :adapted .to be ,releasably bolted 01. Isecured ltogether by ysimple fastening means ,and in Which'the lower .horizontal member of fthe frame is adjustable on thexstandard `:Land ohithfe .side framefmember 33 toward-.or away .-fromjthe .uppers-frame member gto determine the lWidth fof curtains to bestretched. n

.One of the important features of the f improved .curtain stretcher is theflconstruction of'theirright fend..frame .unit which is illustrated-indetail.in Heures-.4,5 andf.- The right Aend frameunit of -theeaselrtype and comprises a-right end `meni- :ber-or barlll which is .of ".thefsamelength as the letter-1d bar for memberA 33 andfisiprovided 'with vgarow-.of=sizing holes or openings I1 spaced one finchfapart and extending lthrougha-i-d bar 324. The" sizingrholes. :in the rightiendfbar. L34 are num- Jaered downwardly; jstartingiwith :1, at thetopwith Mrthe .last i hole i being numbered *54:to vindicatezthe :.niaximurn rwidth to lewhich curtains can be :stretched'on thei frame. If Widerv curtains :arezto cbelstretched, it Willxne'cessitate providingitrans- `fyerse frame members whichare longer.

The right .end -frame Libar. or imem'b'er l`34 *is @adapted :to be .releasably secured :to 'the righthandzend sofi the atop Aframe barflf` and the "lower "frame bar l2.:by clampingfbolts 3`5rand--36 respectively. 'Thef upper 1 and flower end portions of `the .rrghtehandwsidebar 34 are-engaged behindthe iupperfandf lower frame members and sadfbar 31 :issfadaptedtto be. securely locked in place on "the r@horizontal iframe members to v"determine the length :'off'theccurtains vto be stretched-by 'inserte ing the upper and lowerbolts3-5 andl3`6 through the feas'ily `vselected 4Ucorrectly numbered sizing holes I1 of the upper and lower frame members. The position of the right-hand bar may be set in the extreme position illustrated in Figure 1 or in a position of adjustment nearer the left-hand bar 33 for stretching a curtain of less length according to the arrangement illustrated in Figure 4.

Adjustably mounted upon the right end frame bar 34 is a rotatably supported curtain stretcher unit comprising a rod or shaft 31 which is rotatably supported in bearing brackets 38, two of which are rigidly secured to the right end curtain :frame bar 34 as clearly illustrated in Figure 6. A stop ring 39 is integrally or rigidly secured upon the upper portion of the control rod 31 and rests upon the upper supporting bracket 33 to hold the rod in position.

The upper end of the control rod 31 is bent over at right angles to form an operating handle 40. The control rod 31 is mounted adjacent the outer edge or side of the right end` frame bar 34 and has pivotally supported thereon a plurality of curtainstretcher keys` or blocks .4| which are separated from one another by means of thin friction washers 42. Each of the stretcher keys or blocks 4I is providedywitha notch or groove 43. Engaged through each of the stretcher keys or blocks 4| `fromthe `back thereof is a curtain stretcher pin I8 `which projects into the groove 43` of the key. The pins I8 engaged in the keys 4I as well as thepins I8 `in the other frame members havelthe shank portions below the heads of the pins toothed or knurled so that after the stretcher pinsare driven into position they will not work their way out of the keys or frame bars.

i The stretcher pins I8 carried by the keys 4l are spaced one inch apart and are positioned to register with the holes or openings `I1 in the right end frameibar 34. For the purpose of frictionally holding the curtain stretcher keys 4I in contact with one another so that all. of the keys may be simultaneously swung by the rotation of the control rod 31, a coil supporting spring 44 is engaged around the lower portion of the rod 31 between the lower face of the lowermostkey 4I and the lower bracket 38 as illustrated in Figure 6. Also engaged around the control rod 31 is an upper coil spring 45 which has the upper end thereof seated against the upper lbracket 38 while `the lowerv end` of the spring 45 is seated against the top surfaceof the uppermost key 4 i. The

springs

44 and 45 are so constructed that they work in opposite directions and hold the keys 4I and the separating washers 42 in frlctional contact with one; another so that all of the keys may be simultaneously swung `'from their open positions as illustrated in dotted lines in Figure4 to closed curtain stretching positions as illustrated in full lines `in said ligure.` When the keys are thrown into the full linepositions illustratedin Figures `hand 4 the `row of curtain stretcher pins I3 `car-l riedfbythe keys 'are all positioned in alignment with one another and are all disposed in the same plane with the stretcher pins I8 in the other three members frame. When `the four frame members are connected, the pins are all in the same planeand with located in exactly eachv corner of the set up'frame': Il'l'or the purpose of holding the controlrod 31 in propel' alignment against bending; an intermediate bearing bracket 38 is secured to the right end'frame bar`34.` Said bracket is formed with aniapertured plate through which the rod 31 projects.` i i i i i l For the purposevof supporting the. right end constituting the curtain stretcher frame unit of the curtain stretcher, the right end curtain frame bar 34 has secured on the back thereof a channel-shaped bracket 4 in which the upper end of an easel leg 5 is pivotally supported as illustrated in Figure 5. It will thus be noted that when the frame is set up for use the three easel legs 5, which are pivotally attached to the frame members l, 33 and 34, are swung rearwardly from said members into bracing positions. The entire stretcher frame is thus supported in an inclined position ready to have curtains accurately stretched thereon to a predetermined size depending upon the adjustment of the lower frame member and the right-hand end frame member with respectto the remaining two frame members. The full line positions of the lower and right-hand members illustrated in Figure 1 shows the stretcher frame set up for a maximum curtain stretching size. In the position of the adjustable frame members illustrated in dotted lines in Figure l, the frame iszset for stretching curtains of less `width and lesslength than the maximum size for which the stretcher is designed."

o Attention is called to Figure 4 of the drawings which shows a set` up for .the stretching of curtains l of a determined width and length. To stretch a curtain of` less widththan Ithe full width for which the curtain stretcher frame is designed, the clamping bolt `6 ofthe `lower frame member is `released and the llower frame member is slidably moved upwardly .from the` full line position of `Figure l into thedotted line position until the ends of the lower frame bars II and I2 register with the `sizing openings I1 in the side bars 33 and 34 of the frame. At theltime that the lower l frame member is adjusted the control rod31, of the right end frame unit, is swung to move the stretcher keys intoithe dotted line positions illustrated in Figure 4 so that the individually numbered sizing holes I1 in the bar 34 are exposed to permit the bolts `32 `and 36 of the lower framemember to be inserted in the respective selected sizing holes I1 of the side bars 33 and 34. Such a positioning of the lower frame member will permit curtains to be stretched to the selected width and to the full length of the curtain frame. The upper and lower frame members `are bolted to the bar 34 by` means of the upper clamping bolt 35 and the lower clamping bolt 36 which are engaged through the last openings of said upper and lower frame members `to set the curtain stretcher for a selected width lessthan the maximum width of the curtain stretcher adjustment and for the full stretching length ofthe frame.

After the curtain frame bar 34is bolted in position as described, the handle 40 of the control rod 31 is rotated to simultaneously move all of the stretcher keys 4I from thedotted line open positions over into curtain stretching positions in contact with the `front surface of the bar 34.

In case a curtain is to be stretched to a length less `than the maximum length of the curtain stretcher frame, it is only necessary to swing all of the stretcher keys into their open retracted positions and then slide the fright end curtain frame bar 34 into a predetermined adjusted position for the length. of curtain desired which is easily determined by., simply selecting the correctly. numbered` sizing` holes in the top and bottom frame members.` The upper and lower clamping bclts35 `and 33 respectively are then engaged through the selected sizing holes and are securely bolted in place by the wing nuts to set the frame for the required shortened length. The.

control. `rod 31 isnow` rotated to simultaneously swing the stretcher keys to their stretching posie tions resting upon the front face oi the bar 34 with the exception of' two keys which are prevented from being rotated due to the adjusted positioning oi the lowerframe bar' I2 which acts as a stop for the two keysas illustrated in Figure 10.

It will thus be noted that' the improved curtain stretcher frame may be simply and quickly adj-usted by means of theV clamping bolts and the individually designated sizing holes l1, in the various frame members, so that no particular skill or degree of 'intelligence is required for perfectly` setting up a frame fora definite size of curtain: stretching. The sizing of. the frame may thus be readily accomplished in a very short time with ease' and' celerity for stretching curtains to any desired width and length within the limits of the' frame.

Referring now to Figures 1'1 to 18 inclusive', a modified form of curtain stretcher is' illustrated which is substantially' like the curtain stretcher illustrated in Figures l' to' 10 inclusive, with the exception that the upper, lower and left end framev members areI of slightly different cone struction with respect to the location of the individually designated sizing hol'es. Another differenceisfin.r the provision of permanent clamp-v ingunits'for the corners' of the adjustable curtain stretcher fra-me, which clamping units are adapted to be permanently carried by certain of the frame members instead of the removable clamping bolts such as used in the securing t'og'ether of the1 frame members' of the curtain 'stretcher illustrated in Figure 1.

In the modified form of curtain stretcher the yparts which are the same as those illustrated in Figure 1r will be identified by the same reference numerals. In th'e modified formk of framev the top frame member consists of two top frame bars 46 and 41 the adjacent ends' of which are secured toh'inge plates 20' and 23V` respectively ofthe upper hinge unit carriedy on the upper portion ofA the intermediate or m'ain standard I. Each of the upper frame bars et and 4T is provided with a row of spaced sizing holes illustrated in Figures 'I1- and 114. The' sizing openings 48 are spaced one inch' apart with thefirst sizing opening on the left end of the member 4&5v arranged so that it will be spaced one' inch from' the upper stretcher pin IB in the' left endV side frame bar 49 of the modified form of stretcher frame. The sizing openings 48 in the frame members 46 and' 41 are numbered consecutively from 1' to 92' as' a convenience lor adjusting the frame' for stretching a curtain to a ,predetermined or selected length.

The left end frame bar' 49 is provided with sizing holes 50' in the outside face thereof. Rigidly secured to the back of the' top left end frame member 46 is one end of an angle bracket having ahead. 52 which is' provided with an Yinternally' threaded opening through which a clamping bolt 53 is threaded. vThe inner rend of 'the bolt 53 is' provided with a stop' ring 54 rigidly formed a short distance from the end of the screw bolt shank to leave a' clamping stud 55 which is adapted` to project' into the uppermost hole 50 in the end'bar t9 to hold the end bar rigidly clamped `against the outer end of the top frame bar 46 when the' clamping bolt v5? is threaded inwardly until the stop ring 54 tightly presses against the :side surface of the side frame bar 49 as indicated in. dotted lines in Figure 11. It will thus be seen that a device has been provided for securing the frame' members 4'6 and 49" together by a clamping 1:2 device which is permanently carried by thee frame member 45.

Inthe modied form' of frameV the lower frame member consists of two lower frame barsf 56 which are respectively connected to. hinge plates 1f' and 9 similar to'y the arrangement illustrated in Figure 1. Each of the lower frame bars 56 is cut out to form at groove I3 intofwhich the curtain stretcher pins i8 project. Eachf of the lowerA frame bars 56 is also provided withv a; plurality of sizing' holes 5:1 in the bottom face thereof spaced one inch'4 apart to' register with the stretcher pins i3. The outer or left-hand end of. the lower left frame bar 5B has rigidly secured on.- the back' thereof. an' angle bracket 5ft provided with. a clamping bolt 53 similar to the arrangement' for the upper frame member illustrated in Figures 11v and 12'. A permanent' clamping device forv securing thellower end' of the left end fra-me .bar 49 to one end of the lower left-hand frame bar 56y is thus also provided and eliminates anydanger" of the frame' clamping member froml becoming detached and lost.

The changed form of curtain stretcher frame is completed by'a right end frame' unit compris'- ing a right end' frame bar' 58 the'l front' face of which is provided with. a plurality ofV spaced aligned sizing holes'5'9 which are spaced one inch apart. and aire properly identi'hedr'by' a series of identincation numbers' placed" conveniently on the iront face of' they left side frame bar 58. The identification numberson the frame' bar 58 start at the upper vend and continue downwardly', said identiiicati'on numbers ranging from 1' to 54 for a curtain stretcher trame designedfor'stretching curtains to a in'axi'mum'width of 54 inches.

A control rod andv curtain stretcher keys or blocksfii'are furnished for the right end frame unit similar 'to' the' arrangement' illustrated in Figure 1. The' upper portion of'the control rod 3l projects through apertures provided in a pair of spaced lugs or ears t' forming an integral part of oneiian'geol an upper clamping bracket which includes a channel-shape'dbody section 6I` which engages around' the back of the upper portion of the side frame' bar 58 and is rigidly secured thereto by means of 'screws' or other suitable means. Integrally )formed on one side of the channel-shaped body section'lil" of the clamping bracketr is an auxiliary' or' top frameI barv clamp'- ing unit consisting of a plate or flange 62' dis'- posed at right angles to one side' ofthe vchannel body section GI and' projecting' above the' same. vThe upper portion of the plate" 62 is bent outwardlyv at right angles to` provide a top flange 63' having' an internally threaded collar through which a clamping bolt 64' is threaded. Inte'- gra'lly formed on the' lower portion of the threaded shank ofthe clamping bolt' 64 is a stop ring 65 above a plain stud tt', which when the bolt is threaded downwardly, is permitted to seat in one of the sizing' holesv 48' with the stop ring 65 tightly' threaded againstfthei upper facev of the top surface of the' top frame bar 4'1 to hold the bar tl rigidly clampedy to the upper portion 'of the right end frame bar 58. It willv thus be noted that a frame clamping unit for releas'ably con-'- necting thev upper' end' ofthe right end frame' bar 58 to the upper' frame bar 41 is permanently carried on the'I end frame bar 58 to obviate misplacement or loss of the clamping means, which sometimes occurs when removable clamping bolts are used. The auxiliary clamping plate 62' has the lower end thereof bent outwardly to form a stop iiange 61 against whichv the lower face of the top stretcher frame bar His adapted to frame bar 5B.

seat, as illustrated in Figure 15 when the frame members forming the upper right-hand corner of the curtain stretcher frame are clamped together.

For the purpose of clamping the lower portion of the right end frame bar 58 to the right end portion of the lower frame bar 55, a lower clamping unit is slidably engaged on the frame bar 58 and comprises two integrally connected substantially channel-shaped members disposed at sub-i stantially right angles to one another. One of the channel-shaped members is adapted to be engaged on the end frame bar 58 and comprises albracket strip or plate 68 provided with an integral back `flange iis disposed at right angles to the plate 68. The bracket plate 6B is adapted to seat against the inner side of the frame bar 58 while the flange 69 seats against the back surface of said bar as illustrated in Figure 15. Integrally formed at right angles to the front end of `the plate tais asfront flange l which` is formed with an internally threaded sleeve or collar'll through which a clamping bolt 'l2 is threaded. A stop ring or circular flange 'I3 is integrally formed on the `threaded shank of the bolt` l2. to the insideof a plain tip or stud 14 which when thebolt 1.2 is threaded inwardly is adapted to engage in `one of the holes 59 .of the bar 58 to hold the corner` clamping bracket secured in a predetermined set position on the right end frame bar 58. Integrally formed at right angles to one` edge of thebracket plate 68 is a bracketsection which is shaped to be slidably engaged on the lower right end frame bar 56 as shown in Figure `18. The lower frame bar bracket section comprises a back plate l5, a `short top flange 'lli formed at `right angles thereto adapted to seat against the top edge of the bar 56. Integrally formed at right angles to the `lower end of ithe back plate 15 is a bottom plate 'l1 having an openingtherein to register with one of the bottom holes 51 of` the bar 5t.` A front flange 'i8 is integrally formed on the front end and at right angles to the bottom plate 11 and seats against `the iront surface of the lower portion of` the lower frame bar t. Integrally formed atright angles to the second edge of the bracket plate Gli and opposite the bracket bottom plate 11 isa bolt supporting flangel havingintegrally formedv thereon an internally threaded colla-r or sleeve 8l! through which a clamping bolt 8l `is adjust-ably threaded.` The clamping bolt 8| is provided withan integral stop flange or ring 82 formed around the inner endof` a plain tip or stud 33. The plain stud 83 of the clamping bolt 8l is positionedso `that it can project through the` opening in the bracket bottom plate ll and projecting into a selected oneof the sizing holes 5l provided in the bottom `surface of the `lower It will thus be noted that the lower right-hand corner frame bracket maybe slidably adjusted on the lower frame bar 56 and may alsobe adjusted vertically on the right end frame bar 58 to permit the modified form of curtain stretcherframe to be adjusted for stretching curtains of different lengths widths.4 In the modified form of `curtain stretchenillustrated land described, the main supporting standard as well as the side frame members 49 and 58 are each provided witha pivoted easel type leg similar to the arrangement provided for the. curtain stretcher illustrated in Figure 1. s i

It` will thus be noted `that an `improved and simplified form `oi curtain stretcher has been providedwherein the upper and lower frame `forming members are pivotally or `hingedly supported on the middle or intermediate standard of the curtain stretcher which is adapted to be selfsupported by merely opening the easel leg attached to the` back thereof.- This arrangement permits the 1 `upper and ;lower frame forming members to be `pivotally swung into curtain stretching position ready to have the end frame units attached thereto. Another important feature is `the arrangement whereby the lower frame member and the right end frame unit may be adjusted with respect to one another and with respect to the "top frame member to permit curtains of diierent sizes to be stretched on the curtain stretcherpins of the various frame members, all of said pins being disposed in the same plane with a pin located in each of the frame corners.

The novel arrangement of individually numbering or otherwise identifying each of the sizing holes in the four frame members permits the frame to; be quickly and positively adjusted and assembled to a predetermined length `and width by means of the corner clamping units for either forms of curtain stretcher described.

It is to be `understood that various details and features of the` construction may be varied through a wide range without departing from the principlesof this invention, and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.` i -I claim asmy invention:

1 1. A collapsible type of curtain stretcher comprising `endframe members, leg means engaged thereon for bracing the frame members in posi-, tion to assist in supporting the curtain stretcher, a self-supporting intermediate supporting unit, upper and lower collapsible `frame members pivotally supported on the intermediate unit, means for adjusting and then `locking one of saidcollapsible frame members in extended position on thesupporting unit, means for locking the other of said collapsible `frame members in extended position on said intermediate supporting unit, clamping means connecting one of said end frame members to the extended upper and lower collapsible frame members, clamping means for clamping the other end frame member in adjusted position on thecollapsible upper and lower frame members to form a curtain stretcher frame of a predetermined size, said collapsible upper and lower frame members and the left and right end frame members having openings therein for selectively receiving the clamping means for properly i i sizing the curtain frame, curtain stretcher pins carried by the left end frame member and the collapsible upper and lower frame members l in registering relationship with the openings in said members and all disposed in the same plane when the frame members are assembled, a control rod rotatably supported on the right end frame member, and a pluralityof spring controlled frictionally contacting pin carrying `keys rotatably supported on the control rod and adapted to be simultaneously moved into an l open` position to permit the right end frame member to be` secured to the collapsible upper and lower frame members, said pin carrying keys adapted tobe simultaneously rotated to seat on the front face of the right end member to hold the pins on thekeys in curtain stretching position in the same plane as the pins in the ref maining frame forming members.

2. `A` collapsible type of curtain stretcher comprising` upper, lower and end frame members 17 to be simultaneously moved into retracted positions by the rotation of the control rod in one direction and also adapted to be simultaneously moved into curtain stretching positions upon the frame bar with the rotation of the control rod in an opposite direction.

8. In a collapsible type of curtain stretcher a frame comprising three pin carrying frame members connected to form three sides of a stretcher frame with the pins on said members all disposed in the same plane, said pin carrying frame members having numbered sizing openings therein and a fourth frame unit comprising a frame bar having numbered sizing openings therein, clamping mechanisms for engaging selected sizing openings to clamp the end frame bar to two of the three frame members to form a stretcher frame of a predetermined size, spring controlled pin carrying stretcher blocks, and means for adjustably supporting the blocks on said frame bar and for moving the blocks to position the pins thereon in the plane of the pins of the remaining three frame members to provide a stretcher frame wherein all of the pins are disposed in the same plane and wherein the four corners of the frame each has a stretcher pin engaged therein.

9. A curtain stretcher comprising a frame constructed of four frame sections, pins rigidly secured on three of said frame sections and all disposed in the same plane, pin carrying supports rotatably carried by the fourth frame section, means for rotating said supports to position the pins thereon in the plane of the pins on the three` frame sections, separators between said supports, and spring means for holding the separators and supports in frictional contact with one another to facilitate selective operation of the pin carrying supports.

18 10. A curtain stretcher comprising a frame constructed of four frame sections, three of which have stretcher pins rigidly secured thereon With all of said pins disposed in the same plane, the fourth frame section having stretcher pin carrying supports rotatably supported thereon in frictional contact with one another to permit the pin supports to be moved collectively or individually to position the pins thereon in the planes of the pins on the other three frame sections after the fourth frame section is secured in place, and springs on the fourth frame section for resiliently forcing the pin supports on said fourth frame section into frictional contact with one another from opposite directions to facilitate selective operation thereof.

JAMES J. DVORAK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 540,783 Eno June 11, 1895 905,471 Smith Dec. 1, 1908 1,022,737 I-Iolmquist Apr. 19, 1912 1,039,053 Harper Sept. 17, 1912 1,060,829 Edman May 6, 1913 1,556,527 Kreiger Oct. 6, 1925 1,573,562 Miersma Feb. 16, 1926 1,799,001 Carter, Jr. Mar. 31, 1931 2,091,765 McKee Aug. 31, 1937 2,205,820 McBryde June 25, 1940 2,217,004 Carlson Oct. 8, 1940 2,228,645 ASchmitz Jan. 14, 1941 2,309,076 Morando Jan. 19, 1943 2,318,288 Bulger -1--- May 4, 1943

US617721A 1945-09-21 1945-09-21 Curtain stretcher Expired - Lifetime US2471943A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
US617721A US2471943A (en)	1945-09-21	1945-09-21	Curtain stretcher

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US617721A US2471943A (en)	1945-09-21	1945-09-21	Curtain stretcher

Publications (1)

Publication Number	Publication Date
US2471943A true US2471943A (en)	1949-05-31

Family

ID=24474774

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US617721A Expired - Lifetime US2471943A (en)	1945-09-21	1945-09-21	Curtain stretcher

Country Status (1)

Country	Link
US (1)	US2471943A (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US540783A (en) *		1895-06-11		Fancy eno
US905471A (en) *	1908-06-10	1908-12-01	Moses Smith	Lace-curtain stretcher and drier.
US1022737A (en) *	1911-11-27	1912-04-09	John Otto Holmquist	Curtain-stretcher.
US1039053A (en) *	1908-03-17	1912-09-17	Nan G Harper	Curtain-stretcher.
US1060829A (en) *	1912-03-20	1913-05-06	Caleb M Larson	Curtain-stretcher.
US1556527A (en) *	1922-02-15	1925-10-06	Henry H Kreiger	Curtain stretcher
US1573562A (en) *	1924-11-17	1926-02-16	Miersma Thomas	Curtain stretcher
US1799001A (en) *	1929-03-25	1931-03-31	Jr William J Carter	Curtain-stretching device
US2091765A (en) *	1935-11-12	1937-08-31	Sanford I Mckee	Curtain stretcher
US2205820A (en) *	1939-03-21	1940-06-25	Archie F Mcbryde	Curtain stretcher
US2217004A (en) *	1939-08-04	1940-10-08	Chicago Curtain Stretcher Comp	Curtain stretcher
US2228645A (en) *	1940-01-30	1941-01-14	Schmitz Frank	Curtain stretcher
US2309076A (en) *	1941-12-08	1943-01-19	Emanuel R Morando	Tubular curtain stretching device
US2318288A (en) *	1942-02-25	1943-05-04	Alvin Q Bulger	Curtain stretcher

1945
- 1945-09-21 US US617721A patent/US2471943A/en not_active Expired - Lifetime

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US540783A (en) *		1895-06-11		Fancy eno
US1039053A (en) *	1908-03-17	1912-09-17	Nan G Harper	Curtain-stretcher.
US905471A (en) *	1908-06-10	1908-12-01	Moses Smith	Lace-curtain stretcher and drier.
US1022737A (en) *	1911-11-27	1912-04-09	John Otto Holmquist	Curtain-stretcher.
US1060829A (en) *	1912-03-20	1913-05-06	Caleb M Larson	Curtain-stretcher.
US1556527A (en) *	1922-02-15	1925-10-06	Henry H Kreiger	Curtain stretcher
US1573562A (en) *	1924-11-17	1926-02-16	Miersma Thomas	Curtain stretcher
US1799001A (en) *	1929-03-25	1931-03-31	Jr William J Carter	Curtain-stretching device
US2091765A (en) *	1935-11-12	1937-08-31	Sanford I Mckee	Curtain stretcher
US2205820A (en) *	1939-03-21	1940-06-25	Archie F Mcbryde	Curtain stretcher
US2217004A (en) *	1939-08-04	1940-10-08	Chicago Curtain Stretcher Comp	Curtain stretcher
US2228645A (en) *	1940-01-30	1941-01-14	Schmitz Frank	Curtain stretcher
US2309076A (en) *	1941-12-08	1943-01-19	Emanuel R Morando	Tubular curtain stretching device
US2318288A (en) *	1942-02-25	1943-05-04	Alvin Q Bulger	Curtain stretcher

Publication	Publication Date	Title
US3774966A (en)	1973-11-27	Knock-down sofa
US2208945A (en)	1940-07-23	Combined reclining chair and reading stand
US2734409A (en)	1956-02-14	Bar-stock vise
CH562591A5 (en)	1975-06-13	Folding chairs
US502601A (en)	1893-08-01	Reading-stand
US2471943A (en)	1949-05-31	Curtain stretcher
US2354998A (en)	1944-08-01	Reading stand
US3441313A (en)	1969-04-29	Mechanism for adjusting the backrest of seats in vehicles
US1221601A (en)	1917-04-03	Clamp for mirror and picture frames.
US2690368A (en)	1954-09-28	Folding table with spring leaf lock
US2338940A (en)	1944-01-11	Broaching machine
US2641775A (en)	1953-06-16	Drop side crib
US1365223A (en)	1921-01-11	Adjustable back-rest
US2170301A (en)	1939-08-22	Padding rack
US2000397A (en)	1935-05-07	Quilt and rug frame
US2802254A (en)	1957-08-13	Rug loom
US858193A (en)	1907-06-25	Dental chair.
US2637370A (en)	1953-05-05	Barber chair
DE699102C (en)	1940-11-22	Guide device for rubber rings to be taken in by means of a sewing machine
US2891599A (en)	1959-06-23	Vertically adjustable demountable chair seat
US2483296A (en)	1949-09-27	Sofa bed construction
US1307945A (en)	1919-06-24	Copy-holbek
US2452766A (en)	1948-11-02	Device for framing ladies' handbags
US76263A (en)	1868-03-31	Improvement in foemebs for hoop-skirts
US28108A (en)	1860-05-01	Machine fob finishing leather