US2613632A - Wallpaper pasting and trimming machine - Google Patents

Description

Det.A 14, 1952 w. c. RENNE 2,613,632

WALLPAPER PASTING AND TRIMMING MACHINE Filed Sept. 18, 1950 4 Sheets-Sheet 1 Oct. 14, 1952 w. c. RENNE 2,613,532

WALLPAPER PASTING AND TRIMMING MACHINE:v

Filed Sept. 18, 1950 4 SheetsSheet 2 LME;

Oct. 14, 1952 w. c. RENNE 2,613,632

WALLPAPER PASTING AND TRIMMING MACHINE Filed Sept. 18, 1950 4 SheetS-Sheet 5 vl. zl

IN VEN TOR. 14//7//6/77 en/2e 42 2A? y im un Fzy.. I INVENTOR.

l/l//Y//am 5. few/7e BY l Patented Oct. 14, 1952 Veri-cs WALLPAPER PASTING AND TRIMMING MACHINE William C. Renne, Kansas City, Mo.

Application September 18, 1950, Serial No. 185,481

28Claims. (Cl. 118--38) The invention relates to Wallpaper machines of the type wherein the selvage, or edge portions of the paper, are trimmed and paste applied to the paper as the paper is drawn from the roll in which wallpaper is customarily furnished. In machines of this type, the principal difficulty has been in a means for causing the paper to run true as it is drawn from the roll in order that vthe edges will be cut absolutely true and straight. l have found that while paper may be drawn from a roll straight, the operations of trimming and pasting often cause a side drag on the paper, pulling it out of line. This may be caused by such conditions as lack of parallelism between the axis of the paper roll and the axis of the pasterollers, unequal pressure between the paperv and paste rolls 'at opposite sides of the paper, unequalpressure of the cutting discs against the cutting roller at opposite sides of theV paper, or lack of parallelism between the cutting discs and cutting rollers. While the side slippage of the paper may be initially negligible, it is cumulative and becomes substantial when a long length of paper` is withdrawn. Moreover, the stresses set up in the paper by the side slippage thereof eventually l cause the paper to slip back into its true or straight position. This causes objectionable offsets or holidays` in the edges of the paper, which render its unsuitable for use, particularly in the class of papering known as butt-work, wherein adjacent strips of paper are laid edge to edge.

The principal object of this invention is, therefore, the provision of a wall paper machine of the class described wherein the course of the paper is dominated by the roll from which it is drawn, and wherein the pasting and trimming operations do not cause a side drag on said paper.

Another object is the provision of a wallpaper machineof the class described which is readily adjustable to handle paper of any standard width.

A further object is the provision, in a wallpaper machine of the class described, of a pasting roller arrangement which is readily adjustable in length whereby paste will not be applied to the extreme edge portions of the paper. This prevents paste 'from being applied to the cutting roller, and thence transferred to the front or pattern side of the paper. Y

A further object is the provision of adjustable means for closely regulating the amount of paste applied to the paper.

A still further object is the provision of convenient means for measuring both the width of the paper and the length of the paper withdrawn.

Other objects are simplicity and economy of construction, ease of operation requiring little skill, portability, ease of maintenance, and adaptability for use with any type of paper.

With these objects in view, as well as other objects which will appear in the course of the specification, reference Will be had to the drawing, wherein:

Fig. 1 is a front elevation of a wallpaper machine embodying the present invention, partially broken away.

Fig. 2 is a right side elevation of the device as shown in Fig. 1.

Fig. 3 is an enlarged planview of the device, removed from its supporting stand.

Fig. 4 is an enlarged sectional View taken on line IV--IV of Fig. 3.

Fig. 5 is an enlarged left end elevation of the device as shown in Fig. 3.

Fig. 6 is an enlarged fragmentary section taken on line VI-VI of Fig. 5.

Fig. 7 is a fragmentary section taken on line VTI-VII of Fig. 5.

Fig. 8 is a fragmentary section taken on line VIII-VIII of Fig. 4.

Fig. 9 is a fragmentary section taken on line IX-IX of Fig. 4.

Fig. 10 is a foreshortened fragmentary section taken on line X-X of Fig. 5.

Fig. 11 is a fragmentary section taken on line XI-XI of Fig. 10.

Fig. 12 is a reduced section taken on line XII- XII ofV Fig. 4, with parts omitted.

Fig. 13 is a fragmentary enlargement of the central portion of Fig. 12, with parts broken away.

Fig. 14 Ais an enlarged fragmentary section taken on line XIV-XIV of Fig. 12. l

Fig. 15 is a fragmentary section taken on line XV-XV of Fig. 14.

Fig. 1.6` is an enlarged fragmentary section taken on line XVI- XVI of Fig. 12.

Fig. 17' is an enlarged fragmentary section taken on line XVII-XVII of Fig. 12.

Fig. 18 is an enlarged, foreshortened elevational View of the paste Wiper shown detached from the machine. y

Like reference numerals apply to *similar-A parts throughout the several views,v and the numeral 2 applies to a stand including a pair of spaced apart upright front legs 4 and 6 joined rigidly at their upper ends by a pair of horizontal planar members 8 which may serve as shelves for holding small tools. Legs 4 and 6 are also joined by cross braces IIJ intermediate their ends. A leg I2 is pivoted at its upper end to each of legs 4 and 6 at I4, and slopes downwardly and rearwardly to engage the floor. A support bar I6 is pivoted at I8 to each of legs 4 and 6 adjacent the lower end thereof, and extends upwardly and rearwardly, being secured to the adjacent leg I2 by a bolt 20 'or other fastener at their point of intersection thereby rendering the stand rigid. Each support bar I6 is provided at its upper end with an outwardly extending pin 22, for a purpose herein-` after appearing. It is apparent that by removing bolts 20, legs I2 and support bars I6 may be folded substantially coplanar with legs 4 and 6 for transportation or storage. A treadle 24 is pivotally connected to leg 4 at 26, and extends across the front of the stand. It is adapted to operate the cut-off blade as hereinafter described.

A paste tank 28 is carried by stand 2, and itself carries all of the operating parts of the machine with the exception of treadle 24. Said tank is of elongated rectangular form, open at the top, and has a bottom 30, front wall 32, rear wall 34, and end walls 36 and 38. Mounting plates 40 are secured to the front wall 32 and extend above the upper edge thereof. The upwardly` extended portions thereof are perforated at 44 to receive screws 42 or the like for mounting the tank on the rearward edges of legs 4 and of the stand. As best shown in Fig. 4 and 5, mounting plates 40 are spaced apart from front wall 32 by spacers 46, in order to permit the paste roller carriages to be moved freely along said front wall as hereinafter set forth. End walls 36 and 38 of the tank ,are of irregular shape, having portions 48 extending rearwardly from rear wall 34 and portions 50 extending upwardly from rearward extensions 48. An outwardly extending pin 52 is fixed in each of the end walls 36 and 38 adjacent the loweredge thereof. A bag 54 preferably made of fabric is supported, open end up, on pins 52 and pins 22 xed in the upper ends of support bars I6, as shown in Figs. 1 and 2. The open mouth of said bag is thereby disposed beneath the rearward portion of tank 28, and is adapted to receive the wallpaper trimmings.

In general, the wallpaper roll 56 is disposed horizontally over tank 28, and is urged downwardly against paste roller 58 carried rotatably in the tank. The paper from said roll is lead rearwardly around a cutting roller 60 against which cutting discs 62 are urged.

The paste rollers 58 are cylindrical in form, having a rubber coating 64, the outer surface of which is roughened as indicated in Fig. 3 to carry an adequate amount of paste from'the tank to the paper and to provide good traction on the paper. The rollers are disposed for rotation on horizontal axes disposed longitudinally of tank 28, and are disposed substantially within said tank with the upper portions thereof extending above the top of the tank. Each of said rollers is carried by a carriage 64 comprising a planar sheet of metal disposed against the inner surface of front tank wall 32. At its upper edge each carriage is provided with outwardly bent hooks 65 which slidably engage the upper edge portion of said tank wall, whereby the carriages may be moved longitudinally of the tank. As best shown in Figs. 4, 8, and 9, each carriage 64 is provided with inwardly bent tabs 66 and 68 respectively at the upper and lower edges thereof. A substantially vertical rod 'I0 is disposed for vertical axial movement in a perforation 'I2 formed in upper tab 62, and is threaded to receive a nut 'I4 disposed against the upper surface of said tab, whereby said rod may be adjusted vertically. As shown in Figs. 8 and 4, all but two of rods 16 terminate intermediate tabs 66 and 68, and a spring wire I6 affixed to the lower end of each rod extends downwardly through a perforation 'I8 formed in lower tab 68. As shown in Fig. 8, the rods 'I6 of two of the carriages are provided with rigid downward extensions which are carried foi oscillatory and axial movement in the perforations of tabs 68.

Fixed to each rod 'I0 is a rearwardly extending horizontal rod 82, to the rearward end of which is fixed a yoke 84. As best shown in Fig. 9, each yoke has a pair of rearwardly extending parallel arms 86, the rearward end portions of which are bent inwardly to form coaxial stubs 88 which are journalled in spiders 80 of a paste roller 58,Y whereby said roller is supported for axial rotation. Thus each paste roller has a caster action about rod 10 as an axis, and will accurately follow the course of the paper against which it is urged.

Any transverse dragof 'the paste rollers on thev paper, which would cause an off-course tendency, is eliminated. Rods 82 supporting the yokes are offset alternately upwardly and downwardly, as shown in Figs. 4 and 8, and the paste rollers are offset alternately forwardly and rearwardly, to prevent interference between the yokes and to permit the rollers to be spaced closely. Also for this purpose, the yoke arms 86 and spiders 90 are spaced inwardly from the ends of the rollers. The paste rollers are interchangeable, and'as shown in Fig. 3, are of different widths. In this manner, the rollers may be arranged to provide an effective length suitable for any width of paper. Of course only the rollers in actual contact with the paper will function at any one time. As shown in Figs. 4 and 10, the total effective length of the pasting rollers is adjusted to be somewhat less than the total width of the paperlv but` greater than the trimmed width. In this manner paste is not applied to the extreme edges of the paper, and hence will not be deposited on the cutting roller 50 and thence transferred to the face of the paper. The two paste rollers supported by the rigid caster rods 'I0-80 are disposed respectively at opposite edges of the paper,l

and afford a base against which the paper roll may be urged. Nuts '14 associated with said rigid.

caster rods may be adjusted to bring the base provided thereby into accurate parallelism with the cutting roller. v

The resiliently supported caster rods 'I0-'I6 serve to urge the intermediate paste rollers up wardly against the paper roll. The pressure of said intermediate paste rollers against the paper roll may be equalized by means of nuts 14.

The paper roll 56 is carried by a pair of coaxial shafts 92 extending longitudinally of tank 2 8,

above said and just forward from paste rollers 58, each shaft extending from one end of the tank to a point adjacent the center of the tank. As best shown in Fig. 8, each shaft 92 is provided at its inner end with a reduced portion 94 carried for oscillatory and axial sliding movement inv a bracket 96 which extends downwardly and is rigidly attached to tank bottom 38. The outer end of each shaft 92 extends slightly outwardly. from the end of the tank, and is rotatablyA at? tached to the `free end of a leaf spring 98, the. opposite end of which rigidly attached to the adjacent end wall of the tank at |08. Said leaf springs' urge shafts 92 outwardly in .opposite directions. A second leaf spring |02 is rigidly at-l tached at-one end to each of the end walls 3E and,38 at |04, and is attached adjacent its free end to leaf .spring 98. A shouldered screw |06 is carried rotatably in the free end portion of each spring |02, and is threaded into a boss |08 formed on the adjacent end wall as shown in Fig. 7. Itis evident that by turning screws |06, shafts 92 .may .be adjusted axially.

VCarried pivotally and for slidingmovement on each of shafts 92 is an arm ||0, disposed radially to saidl shaft and extending upwardly and. rear.- wardly therefrom. As best shown in Fig. 1l, a latch lever H2 is -pivotally secured to each arm ||0 intermediate its ends by means of a bolt ||4 xed fin said arm. Said lever is lprovided with atang H6 for engaging a flattened'side H8 of shaft S2 with sufficient friction to prevent arm |I0 from sliding along saidY shaft accidentally and to lock said arm against pivotal movement on said shaft. Each latch lever H2 is provided with a handle portion |28 by means of which tang H6 may be moved to and from its operative position, and a springt|22 is disposed about bolt H4 and has an arm |24 extending outwardlyto engage handle `|24 vand resiliently urge said latch lever to its operative position. Each arm H0 is provided adjacent its rearward end with an outwardly extending fixed rod |26, which serves as a handle whereby the arm may be manually manipulated.

The wallpaper roll 56 is supported between the two 'arms H0 in a manner best shown in Fig. 10. A thin rod |28 is adapted toA be inserted -in each end -of the roll with the end portion thereof-projecting outwardly from the roll. Said rods are thin enough to be inserted easily even in a roll which is mashed ormisshapen from packing, and may be of sufficient lengthto substantially meet at the center of aroll of the narrowest paper which may be used. Each of said rods carries a plurality of spring wiresv |30 at spaced intervals therealong; Said wires are spaced peripherallyaboutfthe rods, each being attached imly atone endto said rod and extending longitudinally of .said rods toward the outer ends thereof. -The-freeends ofy said spring wires aresprung outwardly to engage the paper, and` serve the functions of centering and securing therods in thev paperroll, and also in some degreereforming rolls-which havev been` mashed in packing. YAdjacent its outer end each rod |28 has Yalreduced neck portion |32 on which a centrally 'perforated disc |34 'is rotatably mounted. Said kdiscs engage thelends of the roll andmaintain them normal tothe rods |28. The vouterends of rods |28 lare rounded, and mounted .in rounded sockets |36 formed in the confronting `faces of arms HU adjacent the `free ends of said arms. This mounting permits a degree of pivotalmovement between rods |28 and arms H0 for .a purpose whichwill appear presently. v y

. rhe 'wallpaper roll is urged resiliently against paste rollers .58 by the following mechanism. Anrfarm-:I38 is secured rigidly to each of shafts 92 .adjacent the inner end thereof, as best shown in Fig.. 8, `being disposed radially to said shafts and extending upwardly and forwardly therefrom;` IAxconnecting bar V|48 extends between the, free ends offsaid arms, and is connected end of the adjacent lever |52.

thereto for universal pivotal movement by means of screws |42. A helical torsion spring. |44 is disposed about bracket having one ondvsecured in said bracket and its opposite end extended as at |46 to project through a looselyt'- ting hole |48 formed in connecting bar '|40 midway between arms |38. Said spring urges arms |38, shafts 92, and arms |0 in a clockwise direction as viewed in Fig. 4, thereby urging paper roll 56 against paste rollers 58. It will be seen that the single spring |44 turning both of shafts 92, will, by the rocking action of connecting bar |40, transmit equal forces to both of arms l l0 and to theopposite edge portions of the paper. Since unequal pressures at opposite sides of the paper wouldV cause an unequal compression of the paper, and since this would cause uneven drager strain on the paper at its opposite edges which would result in a cumulative off-course tendency ofthe paper, this is an important feature in causing the pa-per to run true. Also, unevenness ofl the roll of paper, such as caused byV flattening ofthe rolll or uneven winding thereof, which would-nor-v 4 mally result in intermittent inequalities of pres-v sure at opposite sides of the roll, are compensated instantly and automatically by the rocking action of connecting bar |45. The pivotal mounting of rods |28 in arms Il!) is necessary in order that the downward pressure of each arm I|0 will be exerted only at the extreme end of the roll, and not transmitted through the roll, Aand to permit the -arms H0 to move unequally due to luneven configuration of the roll. The distance between arms H8 may be adjusted for paper rolls of different widths by manually releasing latch levers H2 and sliding the arms along shafts 92. Fine adjustments may be made by turning screws |05, which move shafts 92 longitudinally as prevously described. Arms |38 are flexible to permit this movement.

Paper from roll 56 is lead rearwardly therefrom and passedaround cutting roller 60. Said roller is cylindrical and disposed parallel to paper roll 56. It is formed of a metal 'such as brass which is suiciently soft to prevent damage to the cutting discs, hereinafter described. `It is provided at its ends with stub axles |50, andeach lof said axles is rotatably journalled in a lever |52. Each of said levers is pivoted adjacent one end at |54 to the inner face of upward extension 50 of tank end walls 38 and 38, and extends'forV wardly and downwardly therefrom. Cutting roller axles |50 are journalled in said levers at a point spaced apart from pivots |54, whereby rpivoting said levers will move roller 50 to and from cutting discs 62. The roller is moved Vupwardly away from the discs when it is desired to thread the paper therebetween. When the levers are moved downwardly to move the roller against the cutting discs, they may be secured by means of latches |58 secured to end walls 35 and 38. Each of said latches comprises a spring strip strip fixed to and extending above end walls 35 and 38, and provided at its upper end with an inwardly projecting tang |58 adapted to engage releasably the forwardly extended By forcing latch members |55 manually outwardly, levers |52 are freed'for" pivotal movement.

Extending between and rigidly attached to levers |52 are a pair of bars |60 and |62. Said bars are planar and disposed above and at the rearward edge of cutting roller (i8, `and extend parallel thereto. These bars have-several functions. They, together with levers |52. form a rigid pivotal frame for roller 60.- They are vertically spaced apart as best shown in Fig. 4, thereby providing a slit |64 therebetween over which the paper |66 passes as it is led upwardly from roller 60. vSaid bars thus provide a backing for the paper as the cut-off blade, described hereinafter, enters slit |64. Bar |60 serves as a mounting for slitting knives |68. As best shown in Fig. 4,; each of said knives is mounted on a spring clip |10 which ts clampingly over the edge of bar |60, and the knife projects rearwardly into the path of the paper |66 to slit it longitudinally. Said knives are adjustablyslidable along rod |60, and of course any desired number of them may be used.

The cut-off knife includes a bar |12 extending the full length of the tank 28 parallel to roller 60, in which is mounted a forwardly extending blade |14, the cutting edge of which is serrated as shown in Fig. 3 and which extends substantially the full length of bars |60 and |62. Said cut-off bar and blade are carried on a shaft |16 which is parallel to bar |12 and which is carried for axial rotation in notches |18 formed in the lower edges of rearward extensions 48 of end walls 36 and 38 of the tank, as best shown in Figs. 4, 5, 12, and 16. Said shaft is connected to bar |12 by radial arms |80 at the ends of said shaft, and a central arm |82. Shaft |16 is re tained in notches |18 by a pair of spring clips |84 disposed adjacent end walls 36 and 38. As best shown in Figs. 12 and 16, each of said clips comprises a length of resilient material fixed at its upper end to the outer surface of rear wall 34 of the tank, and formed at its lower end to present a hook |86 adapted to engage shaft |16. A screw |88 is fixed to rear wall 34 and extends outwardly through a hole |90 formed in each spring clip, and a nut |92 is threaded on said screw against the outer surface of said clip. Said clips are normally urged resiliently outwardly out of engagement with shaft |16, but may be drawn into engagement with said shaft by means of nuts |92." By loosening nuts |92, the entire cut-olf knife assembly may be detached from the remainder of the machine.

When blade |14 is pivoted forwardly about shaft |16, it enters slot |64 between bars |60 and |62 to cut off the paper as previously described. Said blade is urged resiliently to its inoperative position by a helical spring |94 carried in a bracket |96 xed to rear wall 34, said spring being extended to engage central arm |82 to urge blade |14 rearwardly. Said blade is operated by an arm |88 fixed to one end of shaft |16 and extending forwardly therefrom adjacent the outer surface of end wall 38, as best shown in Fig. 2. The upward movement of said arm is limited by a pin 200 xed in end wall 38. A flexible cord 202 or the like is tied at one end to arm |98 and at its opposite end is attached to the free end of t-readle 24 at 204. Thus the operator can operate thecut-ofll blade by means of foot pressure on treadle 24.

As the paper passes under cutting roller 60, it is contacted by a paste wiper 206, best shown in Figs. 4 and 18. Said wiper extends the full length of said cutting roller and is parallel thereto, comprising an elongated strip of sheet rubber or other resilient material. One edge thereof is bound in a sheet metal channel 208, and the other edge thereof has a plurality of regularly spaced V-shaped notches 2|0. Channel 208 is provided at its ends with stub shafts 2|2 which are journalled in end walls 36 and 38. The

CII

free .edge portion of the 'wiper bears resiliently against roller 60, or against the paper on said roller. A resilient Wire 2|4 is xed in each' of stub shafts 2 I4 and extends radially thereto 'ad jacent the outer surface of the adjacent end wall. The free end portion of said spring wire is inserted selectively in any one of a plurality. of notches 2|6 formed in a bracket 2|8 fixed to the outersurface of said end wall, as best shown in Fig. 5. It is evident that as wiresj2|4 are moved into different notches 2|6, stub shafts 212 and wiper 206 will be caused to bear against roller 206 with greater or less pressure, and that the point of contact of said wiper with the roller will be nearer or farther from the edgev of the wiper. Because of the V-shape of the wiper notches 2|0, this causes the line of contact of the wiper on the roller to be variable-from continuous to a line which is interrupted by the full width of the notches. In this manner, the amount of paste left on the paper may be closely regulated. v

The two cutting discs 62 are carried by two coaxial shafts 220, as best shown in Figs. l2` and 15. Said shafts are parallel to roller 60 adjacent the outer surface of rear wall 34, and each shaft extends from a point adjacent the center of tank to the end wall of the tank. The threaded outer end of eachshaft is journalled in the rearward extension 48 of the associated end wall for rotary and longitudinal movement, and a knurled nut 222 is threaded on the extended end of each shaft, and bears against the outersurface of the associated end wall. Each shaft 220 is journalled adjacent its inner end in a bracket 224 fixed to rear wall 34, for rotary and longitudinal movement. Intermediate brackets 224 and end walls 36 and 38, shafts 220 are flattened to present a rectangular cross-section. Mounted for adjustable movement along each of shafts 2,20 is a carriage 226 comprising a planar sheetoi' metal disposed against the upper surface of shaft 220 and rebent at its forward edge to form a channel 228 for slidably engaging` the forward edge of said shaft. At its rearward edge, carriage 226 is provided with a depending'lug230 through which is threaded a set screw 232 adapted to engage the rearward edge of shaft 220 to secure the carriage in position. r A bracket 234 is connected to each carriage 226 for pivotal movement on an axis at right angles to shaft 220 by means of pivot pins 236, and extendsupwardly therefrom. A cutting disc 62 is mounted for rotation at the upper end of each of said brackets by means of ball bearing 238. the axis of said bearing being at right'angles to the pivotal axis of bracket 234. `The cutting discs bear against the rearward side of cutting roller 60, as best shown in Fig. 14, to trim the selvage therefrom. It will be seen that each cutting disc is castered on pivot pins 236, which are disposed on an axis substantially at right angles to a tangent to the cutting roller at the point of contact of the cutting discs therewith, whereby said cutting discs will follow the course of the paper accurately, and will therefore not create any transverse drag on the' paper.'

A plate 240 of sheet metal is supported above each cutter disc 62 by means of a rod 242 fixed to the associated carriage 226. These plates serve as protectors against accidental injury of the hands on the cutting discs, and also as mountmgs for deflector strips 244. Each of said deflector strips comprises a strip of resilient material xed at one end to plate 240 and curving forwardly and downwardly' to bear resiliently against cutting roller 6E) just outwardly from the associated cutting disc 62. Said deflector strips serve to deflect the edge portions 246 cut from the paper outwardly from roller 66 and vdownwardly into bag 54 as shown in Fig. 4. It is of course apparent that when the cutting discs are adjusted by moving carriages 226 along shafts 220, deflector strips 244 will move'therewith and will .always remain in proper relation thereto.

Shafts 22B are torsionally loaded to urge cutting discs 62 against roller 50 by the mechanism best shown in Figs. 4, 12, and 13. Intermediate brackets`224, the inner end portions of shafts are bent downwardly to form parallel spaced apart arms 248, and rebent outwardlyto form arms 256 parallel to shafts 220. An arm 252, generally vertically disposed, is attached at its upper end to rear wall 34 by means of a leaf spring 254, whereby said arm may be moved to and from said rear wall. Said arm may be moved to and from said rear wall by a screw 256 threaded horizontally through the lower portion of arm 252 and bearing at its forward and against rear wall 34. Said screw is manually operable. Arm 252 is disposed midway between arms 248 of shafts 226, and a rocker beam 256 is pivoted at its midpoint to the -lower end of arm 252 by means of 4pivot pin`268, said pivot pin being disposed longitudinally of arm 252. Rocker beam 258 extends horizontally in both directions from said pin, and is provided at` each end withan upturned tab 262 perforated as at 264 to receive respectively y the arms 260 of shafts 220, as best shown in Fig.

13. Arms 250 are free to move longitudinally in said perforations, and to pivot universally to a limited degree therein. It is evident that when screw 256 lis advanced to move arm 252 rearwardly from rear wall 84, rocker beam 258 will transmit equal torsional forces to both of shafts 22|), urging them in a counter-clockwise direction as viewed in Fig. 4 to press cutting discs 62 against roller 60. The rocker beam also com.- pensates for any inequality in the diameters of the cutting discs, and for the fact that either or both cutting discs may not be exactly round, dueto uneven' wear and sharpening thereof. Any' change of cutting pressure of either disc will be transmitted instantly to the other disc through the rocker beam.

'-A tension spring 266 extends between and interconnects arms 24B of shafts 220J thereby urging said shafts longitudinally inwardly. By turning knurled nuts 222 at the outer ends of said shafts, said shafts may be moved longitudinally to malienne adjustments of the position of the cutting discs relative to the paper.

r The positioning of the cutting discs relative tothe paper, andaccurate measurement of the widthof the paper, is facilitated by a measuring tape-268 disposed above and parallel to bar |60. Said tape is pliable,l and has a rubber band 210 or other elastic member secured to one end thereof and engaging a pin 212 fixed to and extending upwardly from bar |60 at the left end thereof.. VThe opposite end portion of said tape is wound on a reel device 21,4 best shown in Fig. 17. Said reel device comprises a flat attaching member 216 perforated at one end to iit over a pin 21B fixed to and extending upwardly fromr the right end ofvbar |60, a yoke member 280 of U-shape connected to member 216 by bolt 282, a bolt 284 extending between the arms of said yoke and having a nut 286 by means of which the yoke armsmay be urged together, and a tubular hub 288 carried rotatably on screw 281| between the yoke arms, on which tape 268 is wound. Nut 286 may be tightened to urge the yoke arms against the ends of hub 288 to prevent rotation thereof. By paying out any desired amount of tape desired, the tape will be moved longitudinally by rubber band 210 to bring the end of the tape accurately into alignment with the edge of the paper.

The length of the paper may be measured by a measuring device best shown in Fig. 5. A stub axle of cutting roller E0 is extended outwardly from the left end of tank 28, and a roller 288 is xed to the extended end thereof. Roller 28B is of precisely the same diameter as the cutting roller. An arm 292 is pivotally connected to the left end wall 36 of the tank by means of a pivot pin 294 fixed to said end wall, said pivot being parallel to the axis of roller 290. Said arm extends rearwardly from its pivot, and carries a roller 295 at its free end for rotation on an axis parallel to pivot 292. A measuring tape 298, formed in a loop is passed around rollers 29|] and 296.- Arm 292 is urged downwardly to maintain tape' 288 taut by means. of a torsion spring 386 carried on pivot pin 294 and engaging arm 292 at a point spaced apart from said pivot. The ends of tape 298 are joinedto form a loo-p by means of a reel device 302 detailed in Fig. 6. It is similar in construction to reel device 214 of tape 268, comprising' an attaching member 384 secured to one end of'tape 298, a yoke 305 secured to the attaching member by bolt 308, a bolt dit connecting the arms of the yoke and having a nut 3 I 2, and a tubular hub 3 I4 mounted rotatably on bolt BID and on which the opposite end portion of the tape is wound.

The length of tape 298 may be adjusted to any convenient length, such as 1 or 11/2 feet, or may be set to correspond to a match or pattern cycle of the paper. The paper is measured as it is withdrawn by counting the revolutions of tape 298. This may be done conveniently by setting the reel device 362 over roller 290 at the start, and counting the number of times said reel device passes over said roller.

The operation of the device is substantially as cifcllows: The operator pushes latches |56 outwardly to release levers |52 and pivots said levers upwardly to move cutting roller 6I) away from cutting discs 62. Rods |28 are inserted in the ends of a paper roll 56, discs I 34 serving to square the ends of said roll. Latch levers I I 2 are released and arms IIE) are moved along shafts 92 until they are spaced properly to receive the rounded ends of rods |28 in sockets |36 thereof. Fine adjustments of the spacing of arms |I0 is made with screws 565. The paste rollers are interchangeably arranged to provide an effective length just less than the untrimmed width 'of the paper, Cutting discs 62 are adjusted to the proper spacing by loosening set screws 232 and moving carriages 226 along shafts 220. Paper from roll 56 is then lead rearwardly and passedl between cuttting roller Ell and cutting discs 52, and thence upwardly as shown at |66. Levers |52 are then pivoted downwardly until they are engaged by latches |56, thereby urging cutting roller 6!) against cutting discs 62. Fine adjustments in the spacing of the cutting discs are made with nuts 222. Paste wiper 206 is adjusted as desired. The paper is then grasped at |66 and pulled upwardly until the desired length has been trimmed and pasted, after which it is cut off Iby operation of treadle 24. If more paper is 1 1 desired than can be withdrawn with one arm reach, the paper is refolded on itself and more is withdrawn. Any length of paper up to the ,total length of the roll may be trimmed and pasted in a single operation.

Thus it is apparent that awallpaper machine havingseveral advantages has been produced. The invention consists not of any means for guiding the paper, which has been found extremely diicult and impractical, but in the provision of means forthe prevention of the misguiding of the paper as and after it is withdrawn from the roll, by the pasting and trimming operations. To this end, the paste roller has been sectionalized and the sections individually castered the pressure of the paper roll against the paste rollers has been equalized at the opposite edges of the paper, the cutting discs have been castered and their cutting pressure equalized. All of these features contribute to the end that the cutting and pasting means follow the paper, rather than exerting possible lateral drags on the paper which would result in the papers moving offcourse. The paper roll itself dominates the course of the paper. Another feature is that the machine may be mounted on stand 2, or may be removed from the stand simply by removing screws 42, and supported'on any table or bench. In the' latter event, cut-off blade |14 is operated by hand. Other features are the novel paste wiper 206, and the measuring devices.

While I have shown a specific embodiment of my invention, it is to be understood that the speciiic structure described and shown in the drawing is to be interpreted as illustrative, and not in a limiting sense. Many minor changes of construction and operation could be made Without departing from the spirit of the invention.

WhatI claim is:

`1. In a wallpaper machine of the class described adapted to receive a roll of wallpaper from which paper may `be drawn, a support, a paste roller carried for rotation by said support, and means carried by said support for supporting said roll oi wallpaper rotatably parallel to and in contact withv a portion of said paste roller, said paste roller comprising a plurality of axially spaced apart sections, said sections being interchangeable and of graduated widths whereby the used portion of said paste roller may be adjusted to the width of the paper.

2. In a wallpaper machine of the class described adapted to receive a roll of wallpaper from which paper may be drawn, an opentopped tank adapted to contain paste, a plurality of carriages carried removably on a Wall of said tank for sliding movement therealong, a paste roller carried for rotation by each of said carriages, said paste rollers being carried on parallel axes and longitudinally spaced apart, and means carried by said paste tank for supporting said roll of wallpaper rotatably parallel to and in contact with a portion of said paste rollers, said paste rollers being interchangeable and of graduated widths whereby the combined widths of the used paste rollers may be adjusted to the width of the paper.

3. In a wallpaper machine of the class described adapted to receive a roll of wallpaper from which paper may be drawn, a support, a paste roller carried for rotation by said support, and means carried by said support for supporting said roll of wallpaper rotatably parallel to and in contact with a portion of said paste roller, said paste roller comprising a vplurality of axially spaced apart sections, means attaching each of said sections to said support for pivotal castering action about an axis at right angles to the direction in which paper is withdrawn from said roll of wallpaper, whereby said paste rollers will align themselves automatically with the direction of movement of said paper.

4. In a wallpaper machine of the class described adapted to receive a roll of wallpaper from which paper may be drawn, a supporta paste roller carried for rotation by said support. and means carried by said support for supporting said roll of wallpaper rotatably parallel to and in contact with a portion of said paste roller, said paste rollei` comprising a plurality of axially spaced apart sections, means attaching each of said sections to said support for pivotal castering action about an axis at right angles to the direction in which paper is withdrawn from said roll of wallpaper, whereby said paste rollers will align themselves automatically with the direction of movement of said paper, said paste roller sections being interchangeable and of graduated widths whereby the used portion of said paste roller may be adjusted to the width of the paper.

5. In a wallpaper machine of the class described adapted to receive a roll of wallpaper from which paper may be drawn, an open-topped tank adapted to contain paste, ya plurality of carriages carried removably on a wall of said tank for sliding movement therealong a, caster rod carried by each of said carriages for axial oscillation, said caster rods being substantially parallel, a paste roller carried for rotation by each of said caster rods, the rotational axes of said paste rollers being at right angles to said caster rods, said paste rollers being longitudinally spaced apart and means carried by said tank for rotatably supporting said roll of wallpaper parallel to said paste rollers and for urging said paper roll against said paste rollers in a direction longitudinal to said caster rods.

6. A machine as in claim 5 wherein said paste rollers are of graduated widths and wherein said carriages are interchangeable.

'7. A machine as in claim 5 having means whereby said caster rods may be moved adjustably in a direction parallel to the axes thereof. to adjust the pressure thereof against said roll of wallpaper. v

8. A machine as in claim 5 wherein certain of said caster rods are flexible and supported adjacent their ends by said carriages, whereby said paste rollers are urged resiliently against said roll of wallpaper.

9. A machine as in claim 5 wherein certain of said caster rods are flexible and supported adjacent their ends by said carriages, whereby said paste rollers are urged resiliently against said wallpaper roll, and having means for adjusting said caster rods longitudinally in said carriages, whereby to adjust the pressureof said paste rollers against said roll of wallpaper.

l0. In a wallpaper machine of the class described, a support, a paste roller carried for rotation by said support, a pair of coaxial shafts carried for independent axial oscillation by said support, a radially extending arm carried rigidly by each of said shafts, means for supporting a roll of wallpaper for axial rotation between the free end portions of said arms, said supporting means having rotary and universally pivotal connections with said arms and a single spring carried by said support and having an adjustable connection with each of said shafts whereby said shaftsarecaused to turn to urgeisaid paper roll against-said paste rollers with equal pressure at both-ends; Y Y w i l1. Aimachineas in claim l0 having-means wherebyv sald `arms Amay be longitudinally adjusted along` said shafts to adjust the spacing between said arms to accommodate a roll of wallpaper of any width. s

12.'A machine as in claim 10 having means whereby said shafts may be moved longitudinally to adjust the spacing between saidarms. f

"13'. A machne'as iny claim 10` having means whereby said arms may be moved adiustably along said shafts, and means for moving said shafts longitudinally, whereby to adjust the spacing between said4 arms.

14. In awallpaper machine of the class described, a support, a paste roller'carried for rotation by saidsupporta pair of coaxial shafts carried 4for independent axial oscillation by said support, a radially extending armcarried rigidly by;l each of` said shafts, means forsupporting a rollof wallpaper for axial rotation between the freeend portions of saidarms, a, second arm secured rigidly to each of said shafts and extending radially therefrom, a connectingbar extending :between the free end portions of said second arms and secured toy each of said second arms foruniversal pivotal movement, and a torsion lspring carried by said support and engaging said Y connecting bar at its midpoint to turn said shafts to urge said roll of wallpaper resiliently against said paste roller.

15. In a ywallpaper machine of the class described, a support, a paste roller carried for ro- 14 and extending radially therefrom, said arms having rounded sockets formed in the confronting surfaces thereof, a' pair of rodsv adapted to be inserted in the ends of a roll of wallpaper; the outer ends of said rods being rounded to engage in said sockets to supportsaidroll of Walltation by said supporta pair of coaxial shafts carriedfor independent axial oscillation by said support, a radially extending arm carried by each of said shafts, a rod adapted to be inserted infeachiend of a roll of wallpaper, means for connesting' the outerends of said rods to the free .endv portions of said arms for rotary and universal pivotal movement; a; second arm rigidly secured to each of said shafts and. extending radially therefrom, Aa connecting bar extending between and secured'to the'free ends of said second arms for universal pivotal movement, and a torsion spring carried by said support and engaging said connecting bar at its vmidpoint to rotate saidshafts to urge said -paper roll against said paste roller.

l v16. A machine as in claim 15` having radially expansible resilient members secured to'the rods inserted into the ends of the wallpaper; roll,

whereby said rods are securedand centered in fr said paper roll.

17. A machine as in claim 15v wherein the first mentioned arms secured to the shafts are provided with rounded sockets in their confronting faces, and wherein the rods inserted in the paper roll are rounded at theirouter ends for engagement in said sockets, whereby said paper roll is supported for rotary and universal pivotal movement relative to said arms.

18. In a Wallpaper machine of the class described, an open-topped tank adapted to contain a liquid paste, a plurality of paste rollers carried for rotation in said tank, said rollers being. axially spaced apart, means for supporting each paste roller independently for pivotal `castering action about an axis at right angles to the rotational axis thereof, a pair of coaxial shafts carried independently by said tank for` axial oscillation, said shafts being parallel to said paste rollers, an arm fixed to each of said shafts paper parallel to and against said paste rollers, va second arm xed to each of said shafts and extending radially therefrom, a connecting bar extending between and secured looselyto the free end portions of said second arms, anda spring carried by said tank and engaging said connectingbar at its midpoint to apply a torsional load to said shafts to urge said paper roll against said paste rollers in a direction longitudinal of the castering axes of said paste rollers.

`19. A machine as in claim 18 wherein said paste rollers are interchangeable and of graduated widths, whereby to provide a composite paste roller of a width cemmensurate with the width of the paper.

20. A machine as in claiml wherein the paste rollers at the opposite edges of the paper are rigidly supported against movement by the pressure of the paper roll thereagainst, thereby providing a fixed base for said paper, and having means whereby the `paste rollers disposed intermediate the edge of thepaper'are urged resiliently against 'said' paperroll, and means for adjusting said pressure;

2l. A machine as in claim 18 having means whereby said first mentioned arms are adjustable along said shafts, and means for adjusting=said shafts longitudinallywhereby to adjust the spacingibetween said arms'.v

22. In a wallpaper. machine of the character described wherein .wallpaper is drawn froma roll carried rotatably by said machine, a support,A a cutting roller. carried by said support for rotation about an axis parallel to said paperroll, and about which said paper is passed, a pairof ycoaxial shafts carried for axial oscillation bysaid support on an axis parallel to said cutting roller, a circular cutting disc carried by `each of said shafts for rotation aboutfan-axis parallel to but ..6 each of said shafts, a rocker beam extending between and connected to the free endportions of said arms for universal pivotal movement; an operating arm attached to said support for movement relative` thereto,y said rocker beam being pivoted at its midpoint to said operatingvarm on an axis substantially parallel to said arms; and means for moving said operating arm transversely to said pivotal axis whereby equal torsional forces are transmitted to said shafts to urge said cutting discs equally against said cutting roller.

23. A machine as in claim 22 wherein the shafts are movable longitudinally to adjust the spacing between said cutting discs.

24. In a wallpaper machine of the character described wherein wallpaper is drawn from a roll carried rotatably by said machine, a support, a cutting roller carried by said support for rotation about an axis parallel to said paper roll, and about which said paper is passed, a pair of coaxial shafts carried for axial oscillation by said support on an axis parallel to said cutting roller, a carriage carried for adjustable movement along each of said shafts, a circular cutting disc carried by each of said carriages for rotation about an axis parallel to but spaced apart from said shafts, a fixed arm extending radially from each of said shafts, a

rocker beam extending between and connected t`o the free ends of saidarms for universal pivotal movement, an operating arm attached to said support for movement relative thereto transversely to said shafts, said rocker beam being pivoted at its midpoint to said operating arm on an axis substantially parallel to said shaft arms, and means for urging said operating arm transversely to said pivotal axis whereby said shaft arms and shafts are turned to urge said cutting discs against said cutting roller with equal pressure.

25. A machine as in claim 24 wherein said shafts are movable longitudinally relative to said support and to said rocker beam, whereby to ad,- just the spacing between said cutting discs.

26. A machine as in claim 24 wherein the cutting discs are carried for pivotal castering action by said carriages about axes substantially at right angles t a tangent to the cutting discs at their points of Contact with said cutting roller.

27. A wallpaper machine comprising a tank, a plurality of paste rollers carried for rotation in said tank, said rollers having parallel axes and .being longitudinally spaced, each of said paste rollers being independently carried by said tank for pivotal castering action about an axis transverse to the rotational axis thereof, a pair of coaxial shafts carried for axial oscillation by said tank parallel to said paste rollers, a first arm fixed to each of said shafts and extending radially therefrom, a pair of rods adapted to be inserted in the ends of a roll of wallpaper, the outer ends of said rods being engageable in said rst arms for rotary and universal pivotal movement, whereby said paper roll is supported parallel to and in contact with said paste rollers, a second arm secured toeach of said shafts and extending radially therefrom, a connecting bar extending between and connected to the free end portions of said second arms for universal pivotal movement, a spring carried by said tank and engaging said connecting bar at its midpoint to load said shafts torsionally to urge said paper roll against said paste rollers, a cutting roller about which paper drawn from the roll is led, said cutting roller being carried for rotation by said tank and being parallel to said paper roll, a second pair of coaxial shafts carried for axial oscillation by said tank parallel to said cutting roller, a carriage mounted for adjustable movement along each of said second shafts, a cutting disc vcarried rotatably by each of said carriages and for pivotal castering action about an axis transverse to the associated shaft, a xed arm extending radially from each of said second shafts, a rocker beam extendingl between and connected to the free ends of said last named arms for universal pivotal movement, and means carried by said tank for pivotally engaging. said rocker beam at its midpoint and urging said rocker beam transversely to said last named arms to4 apply torsion to said second shafts to urge said cutting discs against said cutting roller.

28. In a wallpaper machine of the class' described, a paste tank, a paste roller carried rotatably in said tank, means carried by said tank for rotatably supporting a roll of wallpaper parallel to and in contact with said'paste roller, a roller carried rotatably by said tank parallel to said roll of wallpaper, and about which paper drawn from said roll is passed, an elongated support member carried for axial oscillation by said tank parallel to and in spaced relation from said roller, a paste wiper comprising an elongated resilient strip secured along one edge in said support and having its opposite edge portion bearing resiliently against said roller,the edgeportion thereof bearing against said roller having a series of generally V-shaped notches formed therein, and means for adjustably turning said support whereby a greater or less widthv of the paste wiper is caused to bear against said roller.

WILLIAM c. RENNE. l

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

UNITED STATES PATENTS Number Name Date v 422,609 McGraw et al Mar. 4, 1890 479,473 Stock July 26, 1892 525,118 Riker Aug. 28, 1894 708,419 Sproot Sept. 2, 1902 742,807 Tharp Oct. 27, .1903 742,808 Vogt Oct. 27, 1,903 743,989 Phelps Nov.-10, 1903 903,672 Chatelain Nov. 10, 1908 929,274 Bauman July` 27, 1909 936,103 Engberg Oct. 5, 1909 944,049 Purviance Dec. 2l, 1909 1,133,142 Hirsch Mar. 23, 1915 1,184,284 Wake May 23, 1916 1,218,728 Beach Jan. 23, 1 917 1,281,178 Lawton Oct. 8, 1918 1,547,050 Lalone July 21, 1925 1,672,982 Johnson June 12,1928 1,812,588 Foster June 30, 1931 1,985,800 Schutz Dec. 25, 1934 2,242,887

Holdgate et al May 20, 1941

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