US1251817A - Gummed-blank wiper for tight and loose types of blank-wrapping work. - Google Patents

Description

M. E. PETERS, G. H. FATH & A. F. MILLER. GUMMED BLANK WIPER FOR TIGHT -AND LOOSE TYPES OF BLANK WRAPPING WORK.

APPLICATION FILED SEPT-2511916- 1,251,817. Patented Jan. 1,1918.

2 SHEETS+SHEET l.

fiwawiarsf M E. PETERS, e; H. FATH & A. F. 'MlLLE-R. GUMMED BLANK WIPER FOR TIGHT AND LOOSE TYPES Of BLANK WRAPPING WORK.

APPLICATION FILED SEPT- 25, I916- Patented Jam 1, 191

2 SHEETS-SHEET 2.

"To all whom, it may 0012001 12:

'MELVILLE E. PETERS, GEORGE r1. FATE, AND ALBERT F. MILLER, on nnivvnn, oo o- RADO, ASSIGNOBS TO THE'PETERS PATENT RIGHTS COMPANY, OF DENVER. COLO- RAIDO, A CORPORATION OF COLORADO.

Gunman-BLA K wirnn non TIGHT AND Loose 'rYrnsor BLANK-,Wf RAPPING WORK.

Original application filed November 5,

Be it known that we, MELVILLE E. Perms, GEORGE H. FATH, and ALBERT F. MILLER, citizens of the United States of America, residing at the'city and county of Denver and State of Colorado, have invented a new and useful Gummed-Blank Wiper for Tight and Loose Types of Blank-WV'rappingWork, of which the following is a specification:

Our invention relates to box and gumrned blank wipers for tight and loose typesof blank wrapping work for box wrapping machines; and the objects of our invention are:

First, to provide end folding wings which will fold the extended ends of blanks around the corner ends of the opposite ends of boxes in both the tight and loose characters of box wrapping work, with box wrapping gumined blanks of paper or other suitable materials. 1

Second, to' provide rapid working blank end and box corner and end turning and wrapping wings, of which there are two at each end of each box, which move from opposite positions simultaneously across the ends of each box and when making their back or inoperative or return stroke,'when gluing the blanks to the ends of the boxes,

by 'the system known as tightw'r'ap box covering work, are moved away 'from'the ends of the box and thus are relieved from a dragging pressure against" the freshly wrapped blank and the ends of the'box.

\Vhile when wrapping the blank ends around the ends of boxes and gluing their ends together there, by the systemknown as loose wrap box covering work, these same wings act exactly in reverse order, which is, that on their forward stroke across the ends of a box they are held away from the ends of the box and do notbear against it, although they do bend the ends around the corners of and push the ends of the blanks around the ends of the box loosely to its center. Then when they have reached the end of their forward stroke, they move directly and quickly againstthe ends of the box and press the gummedmarginaledges Specification of Letters Patent.

Patented Jan. 1,1918.

1915, SerialNo. 59,860. Divided and this application filed September 25, 1916. Serial No. 122,061.

of the blanks against the ends of the box, and glue them there and they maintain a resilient pressure against theends of the blank and the box during theirentire backward stroke movement. I

Third, to provide a simple, quick, rapid acting gummed blank and box wrapping wiper mechanism that is positioned at the opposite four corners of the gummed blanks and unwrapped boxes and that move in re-. 'ciprocal horizontal planes in intermediate order following the side wrapping action of box wrapping machines, which always precedesthe action ofthese end wipers, which are adapted for both tight and loose wrap work, in which the wipers when making tight wrap work relieve themselves or back off from the box on their back or inopera-' 'ti'vestroke while the'same wipers wrapping in the lose wrap kind of wrapping have an exactly reversed action.

We attain these objects by the mechanism illustrated in the accompanying drawings, inwhich:

Figure 1 is a side elevation, partly in section, of a'portion of a box wrapping :machine embodying our invention.

porting standards and mechanism carried thereby for folding the end portions of the side members of a wrapper around and over the ends and corners of a'box. Fig. 3 1s a central, vertical, sectional View ating mechanism for actuating the side wiper mechanism, either for extensionbottom boxes or those of the usual character.

Fig. 6 is a detail front elevation of the operating mechanism connected with the upper box form plunger.

Fig; 7 1s a perspective view of. a partially wrapped box, showing the end portions of the side members of the wrapper folded around and overthe ends of a box as ac;

complished by our improvement, 7

v Fig. 2 isa plan view of one-of. the sup Fig. 8 is a plan view of a tight-wrap blank or wrapper, showing the entire surface thereof coated with gum. And

Fig. 9 is a plan view of a loose-wrap blank OI wrapper.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the drawings:

The figures illustrate a combined blank and box corner end wiper mechanism.

Our present corner Wiper mechanism is a division of our parent application for a patent for a box wrapping machine, filed November 5, '1915,Seri'al Number 59,860, but in our present application our corner wiper mechanism is especially adapted to operate on tight wrap box and blank wrapping or covering work and also on loose wrap work. On tight wrap work its movements are-in part different from its movements when wrapping with loose wrap type of blank and box wrapping or covering work.

We will then consequently describe its operation and the mechanism that actuates them for both classes of wrapping work,

and will describe the tight wrap class of work first.

To this end the following descriptive matter of the cooperative element and mechanism that acts prior to and handles each box and blank and brings them into such relation to each other and into a position in which our corner wiping mechanism can operate on them, is given and illustrated,

although this mechanism does not form a direct part of ourrpresent box corner end blank wiper mechanism, but cooperatively unites with it to perform an operative box and gummed blank conveyer' wrapping mechanism. A. supporting bed plate'l and a box shaped frame having side frames 2,

and having a table portion 3 at their upper ends 1s provided.

Through the center of the table portion 3 of the machine, an aperture 4 is formed, in which a vertical plunger bar 5 is recipro cally mounted in adjustable slideway bearings 6 that are attached to the upper side of the table portion 3 of the frame. The lower end of this bar is connected to the upper end of a cam fork 7, the lower end of which engages a cam disk 8 that is secured on the main driving shaft 9 of the machine. The upper end of the plunger bar 5 is provided with a flange 10 that is secured to a block 11 of wood or other suitable material that is made of the size and width of the bottoms of the particular sizes of box-that are to be pressed. against it. The top surface of. this block is covered byv a cushion of felt or other suitable material, against which the bottoms of the boxes rest.

Our plungers and size and corner=mechanisln will partiallycover or wrap boxes of block and each box is fed to rest centrally on the blank and to rest also centrally on the top of the block, which forms a movable support for the blanks and the boxes.

Above this lower' plunger bl'ockandin vertical axial alinement with it, anupper plunger bar 12 is reciprocally mounted in suitable slideway bearings 7 13 that are formed. in an overhanging bracket arm 14 which is secured to the box frame of the machine. The lower end of this plunger bar is provided with a block 15 which we term a box form, as it'is made enough smaller than the. box and the blockll of the lower plunger to fit snugly inside of the, boxes. 7

' The boxes are fed automatically centrally over the top of the blanks and in that position the upper plungers box forrndescends directly into the box'agai-nst its bottom and presses the bottom of the box down tight against the blank and against'the top .of the lowerplunger block. The lower plunger with its block ,reciprocates. vertically-a short distance and theposition in which thelower plunger block first receives the blank and the box shell is the highest point or vcenter of its vertical reciprocal movement. Consequently when the upper plunger :form descends into the box against its bottom,,it instantly presses it and the blank against the block of the lower plunger, which forms an abutment to the pressure of the form of the upper plunger of sufficient resistance to glue the bottom of the box to the gummed sur face of the blank upon which the block rests- The lower plunger is then drawn down by its cam 8 and 1s forced down between the against the top of the lower plunger, and as the lower plunger moves slower on its down stroke than the. upper plunger, the-upper plunger inorder to yield to the'slower down movement of the lower plunger, is provided with a coiled spring 17, whichis mounted on a bolt 18. This bolt is provided with an eyez19 that is threaded to the upper end of the bolt. :This eye 19 is loosely mounted on a studbolt 20 which is threaded into the opposite end of the spring provided bolt is side wipers 16,; and as these two plungers sideof the-reciprocal plunger bar 12. The

washer 22 bears and'the spring 17 is mounted on'the bolt 18 and'bears resiliently at one end against the washer and at its. opposite end against the under side of one end of'an eye-bolt 23, that is loosely mounted on the bolt 18 and which is held underadjusted tension onthe bolt by two nuts 24' which are screwed down against the eye bolt and enough further to cause the eye bolt to compress the spring until the eye bolt and the reciprocating plunger bar are under the desired tension. The eyebolt is provided with a threaded stud portion that extends loosely through and is secured bya nut to a lug 25 that-forms the terminal end of a lever 26, the opposite end of whichis pivotally secured to a yoke27, that is formed on an arm portion 28 of aflyoke-shaped frame 29 which rests on and is bolted tothe top table portion of the boxshaped supporting frame of the machine.

.The lever 26 is reciprocated vertically by a rod 30, one end of which is provided with ayoke lug 31, which straddles the rod and a pivotal bolt 32 is extended through both the.

lug 31 and the lever. The lever has an elongated slot 33 and the pin 32 carries a roller34, which engages the edgesof the slot, as the lever is raised and lowered, the said slot permitting the vertical movement of the rod 30, as will be understood. The opposite end of this'flrod 30 is connected to a lever 35, which isarranged to be engaged by'a cam 36, that is formed on a disk 37, which is secured on the main driving shaft 9. This main driving shaft is positioned in;the box frame above the base plate and it extends along the centertof the width and through out its length and-it is journaled inboxes 38 that are secured to the base plate.

The oppositely arranged side wipers 16 that turn the upper ends of the sides of the gummed blanks up against the boxes are mounted on two stationary 'cross head brackets 39 that-are secured to the top of the table portion of the frame, and they are arranged on opposite sides of-the .box supporting plungers lland 15. These si'de wipers '16 preferably consist of pieces of wood, the blank engaging faces of which are covered with strips of felt 40 or other suitable materialwhich is glued or is otherwise securedto each. wiper. These wipers are removably secured to projections 41: that are formed on cross heads 42 that are slidably mounted in slideways 43 that are formed in the brackets 39. There are two of these .brackets, one on .each side of the upper and lower plungers, and these two plungers reciprocally carry eachbox. and blank between these side'wipers. These side brackets are positioned parallel with the longitudinal length of the box wrapping machine,'and are securedi to the'top of the table portion" of. the frame. These brackets we term'the side cross head "brackets, and they each havesa central standard portion 44 and .two laterally .extending wing portions 45, and they are of the form shown in portion 4'? that isformed on one end of a rockwarm 48. These rock "arms are piv otally secured to the brackets 39, and their opposite ends are provided with pivotal eye bolts 49, through which vertically positioned rods 50 pass loosely. FA collar 51 "is secured on each rod by a set screw and an. expansive spring'52 is mounted on the rod between the collar and the eye bolt 49. The

upper end of each rod is threaded and a collar 53 is pinned to it, which engages the eye bolt 49 onthe downwardmovement of the rod50. 1

Y The rods 50 extend down through bosses 54 on "the brackets 39 and through the table,

and rest on the ends of a bar 55, the central portion of which is securedto a vertical plunger 56, that is reciprocally mounted in a slidewayl. formed in atransverse bracket 57, that is bolted to the sides of the frame.

The lower end 0f the plunger'bar 56, is connected by a link 58-to o'neend of a lever 59, the opposite end of which isrigidly secured to a shaft 60', whichis mounted in a bearing standard 61," which is .boltedto the bed plate. On the'ishaft 6O arealsomounted the outer ends of lever arms 62' and 63, the inner endsof which are providedgwith rollers 63*. which "enter respectively; cam grooves in the opposite-faces 64 and 65 of a'cam disk 66, mounted on the cam shaft 9. Between the arms-62 and 63 .and also mounted on the'shaft 60, are integrally connected short arms 67 and 6.8, the innerends of which are provided .with holes 63 which are in .linewith corresponding holes in'the arms 62-and' 63. A handlever 69is mounted on'thehub portion'of the arms 67 and 68, and its forward endis pivotally attached. to a locking pin 7 0, which is slidably mounts ed in the inner ends. of the short arms 67 iandl68. .The locking pin'is of such a length that whenthe leveris shifted in the direction of the arrow, the said pin projects through thehole in the-arm 68 and into the hole-in the arm 63, thus locking the arms 63and=68 together, while the arm 62 is disconnected from the arms 67 and 68. The

arm-62 and its actuating cam face 64 operate in connection with boxes of the ordinary type, while the arm 63 a'ndits actuating cam face '65 operate in connection with boxes having extension bottoms, the respective cam grooves belng arranged to that end.: Thus when boxes ofthe usual type are being covered, the arm 63 is notneeded-,.and when extension bottom boxesare being,=covered, the arm 62 is out of. commission. Therefore, when boxes ofthe usual type are being coverechlthe short arm 67, which, with the arm 68,is rigidlysecured to the 'shaft- 60 by a pin orother suitable means, is locked to the arm 62,- and whenthe arm .62 is operated'byits' cam 64:, a corresponding movement -is-iinparted to theshort arm 67, which is locked .to the arm- 62 by thepin T0,. and as the :arm 67 is rigidly connected-to the shaft 60, the said shaft is turned thereby and the arm 5.9, which is alsorigidly attached to the shaft 60, is rocked, andmovement is thus transmitted to the plunger-.arm56 through the medium of the link 58. The arm 63 will be rocked by its cam 65,.but it will perform no function as. it is. not-locked to the shaft 60. Collars 71 are secured upon the lower portions of therods 50, and betweenthese collars and the lower ends of the bosses 54, are interposed coiled springs 72, which act, to. depress the rods 50, after they have been raised and then released by the cross bar 55.

.The vertical movement of the rods 50 causes their collars 51. .tocompress the springs 52 and raise the rock arm A8,.- which causes the toothed ends-of the rock arms which engagev the rack bar L6 ofthe cross head &2 to move the Wiper blocks; against the sides of the blank and box, and hold it there with a resilient tension, as the rods 50 V are free tomove through. the eye bolts 49 after the side wviper is against the; box. Consequently the side wipers bear against the box: with a resiliently yielding pressure. The next step treatment of wrapping the blank around the box in tight wrap work. is performed by the corner wipers '78. These corner wipers are used to wrap the end por tions of the'sides of blanks. fortight. wrap work that have been gummed wholly all over one of their sides against and-around the corners of thebox as shown. in Fig. 2, just beforethe end wipers move into action to wrap the ends of the label against the ends ofthebox. There are two .of'these corner wiper for each end of the box, one at each c'orner,.and they each consist of a plate 73, which is provided with lugs 74:."whichare pivotally secured to a block 75- by a pin 76. This pin is extended beyond the lugsand a coiled spring .77. is mounted on it, one; end of which is secured to a collar 78 on the lower end of the pin and the other end of the spring is secured to the adjacent lug 74. Each block 7 5 is tiltingly securedto the end of a toothed rack bar 7 9 by a pin SO-and this block is also tiltinglysecured by a pin 81 to asimilar rack bar 82. Thetwo bars 79 and 82 are mounted parallel to each other in a slideway bracket 88 that is adjustably se cured in slots Sthat are fo'rmedin each .end 01131011 the bracket bolts 85,

there: being two sets ofithese; corner wipers for each side of the-box. Each toothed rack bar 7 9 is. engae'edby a gear, .86 that is provided with vside. trunnions, that. are mounted in bearings that are formedin the sides of the slideway bracket 83. Each bracket 89v is provided with bearings 87 :at .its ends in which are mounted square shafts 88 having round bushings which turn in the said bearings 87, and upon the respective shafts; 188 are slidably. mounted the gear wheels 86, two gear wheels being on each shaft. ,The gear wheels occupy the position shown in F ig; 2,

or in other -words mesh withthe toothed bars 79 when tightwrapboxesare. passed through the machine; and for loose wrap .boxes, the gears 86 are shifted to engage the toothed bars 82. The gears have short trunnions, one of which enters the opening-in the adjacent side of the slideway bracket 83 when the gear is in mesh with. the'toothed bar 79,-while the other trunnion enters the opening in the other side ofthe bracket 83 when the gear is in meshwith the toothed bar 82. The slideway isformed with a-central partition web 89, which separates the toothed bars 79 and. 82, the said web having a semi-circular-recess to permit of the lateral shifting ofithe gear wheels v86; Upon the outer. endof the partition web' of each slideway is secured. a blade spring 90 having a curved portion, which, when. the gear wheel 86-is in mesh witheither. of the toothed bars :7 9 .or .82,.is adapted .to bear upon the adjacenttrun-nion of the said gear wheel, andv thus prevent lateralshifting of the same, as will be understood by reference to Fig. 2. Eachof thesquare shafts- 88 is rotated by a gear 91 that, is mounted :on .its forward end. and which is driven by a .vertically disposed toothed rack. portion that is formed on a bar 92-that is slidably mounted at its upper end in slideways 93 that. are formed in-the adjacent ends 45 of the cross head bracket 39. The lower end of this rack .bar isadjustably secured to aqvertically reciprocating cross headbracket 94;. The slots 95 in the lower end of the rack bar when it connects with the ends of the reciprocal cross headbracket permlt of vertical ad ustment of the rack bar.

The reclprocating bar '79 ismoved' by a slight throw movement of the vertical upstroke of the cross head 9st andthe vertical rack bar 92 and by its pinion 91 and the pinion 86, against the corner of the blank and the corner of' the born-which throw movement is sufficient to tiltingly compress the Wiper againstits butment spring-as the wiper moves against and over the corner of the box against its adjacent corner and edges with=1suflicient resilientpressure to vfirmly glue the corners-of the blank to .theexcorners of the box. After; the corner :wiperhas pressed the .corner' of the blank: against. the

45 and wrap them up against and gluethem to 50 the ends of the boxfshell, and as they do ward movement by the frictional engagement of the tooth bar not operated bythe gear 86, with its slideway. In the" present instance, the bar 79 is engaged by thege'ar 86, and the bar is moved outward or away fromthe box. The "pull on the bar'by th gear wheel will cause the block to til'tIoutward or away from the corner of thebox, owing to the consequent dragging movement of the bar 82 upon whichan indirect pull'is exerted. Thus when the block 75, and its wiper73 start forward or towarda box, the

wiper is thrown out slightly, but the initial movement of the bar 79 tilts the. block-J75, owing to the indire'ctpull on the bar 82, and consequently the wiper 73 ispressed against the end of .the box. .The pinion thus causes the corner wiper to tilt against the box as the wiper starts across the end corner 'of the box, and the bar not operated by the gear 86 causes the wiper to tilt away from the box after it has completed its corner blank side end wrapping stroke. The reciprocating cross heads .94 reciprocate the rack bar-"92 that rotates :the pinion and shaft that through the medium of the gear 86 reciprocates the bar 79, which moves the wipers to and from and across the surface of the corner, ends of the box, at all four of its corners, and leaves the ends of the blank glued to the ends of. the box as shown in Fig. 7.

The next step treatment follows the tightwrap treatment and the final one of wrapping the blank around the box is given by the end wipers 95 which act simultaneously against the opposite ends of the label the opposite ends of the box.

1 The end wipers 95. are designed to engage thecentral, portions-of the-ends of the blanksand wipingly press them up against this they fold-and press the ends of the blanks over the corners of the blank, which have just been glued to the corners of the box shell by the corner wipers. ,The box shell is carried down between the side .and corner wipers, but the end wipers move upward againstand over the ends of theopposite ends of the box shell; 1

Further description of the end wipers is not necessary, as theydo not form a part of our presentinvention;

The mechanism that assembles-the .box and; blank and wraps the blank to .t'hefgbob tom and opposite sides of each box is the same for loose wrap work as for tight wrap work,and in the character of boxwrapping work with blanks known as loose wrap work,

thesame arrangement of wiper-sis used as for tight wr p Ork, as the blank which does not contain any adhesive gum except long lts outer edgeportions, as shown in Fig. 9, :has to be wrapped around the box justrthesame, theonly difference being in.

the operation, and in the character or differentsystem'of blank'wrapping given in :loose: wrap work from that of tight wrap work In; tight w rapwork the blank is gummed all over one side of. its surface; in loosefwrap work the blank isgummedon its outside'edges only and only on a portion of its'en d edges. In tight; wrap work the blank isgglued tightly th'roughoutits surface to the box; in loose wrap. work the'blank is glued only at its edges to the box, and the rest of the blank rests loosely "against the bottomythe side's, andthe ends of the'box;

In the tight'wrapsystein the ends of: the blank-are pressed against and gluedagainst the: opposite. ends of the box ontheir forward stroke. nd are'moved away from the ends of. thebox on their rearward or backward stroke; whileuinthe loosewrapping the blanks are simply turned around the corners'of the opposite ends'of thebox and are held loosely close to the opposite ends of the box, and then at theend of their forward stroke they are moved mwardly' against-th opposite ends of the box, and they glue the gummed edges of these loose wrap blanks to the central portion-of the-opposite ends of the box, and on their. return" or backward stroke they drag .under resilient .pressure against the blank and the'end of the opposite ends of the box. The object of the reverse relief movement of the loose wrap is simply to fiatten'the blanks ends close up against the ends of the box so that there will be no difficulty in properly turning the upward projectingedges of these ends over the open edges ofthe opposite ends of the box, which is-an operation that has to be done after the I endsoftheblank are glued to the opposite ends ofthe box. 'At the same time'the rearward sweeping pressure'lof the wings against the ends of the blanks presses them tightly enoughv against the opposite ends of the box to glue their gummed edge surfaces to the ends of: the box, as it is thedistinguishing featureof loose'wrap work that the blank throughout the inner' area of its end and also of its sides should stand smoothly close to thebox'but notbe glued to it and thus it has what might be termed a cushioning or slightlyyielding feeling to the touch of thefingers, just as though there was a thin cushioning film of air between the blank and the box; while in tight w'rap work the blank is glued allover to the box just as though it was a part of the box itself. When wrapping in the loose wrap classof work, the gear pinion .86 is shifted from the rack bar 7 9 as shown in Fig. 2 to the. rack bar '82 by lifting the spring 90 and simply sliding it along the shaft 88. Thischangeis all that is necessary.

The operation of the wipers isas follows: The side wipers remain up against the opposite sides of the. box until while the corner d corner end wipers are Wrapping the ends of the Sides of the blank against the opposite corners of the opposite ends of the box, and the corner wipersin performing their wrapping functions engage the ends of the opposite sides ofthe blanks and fold them around and against the corner and corner edge and ,end portions ofthe opposite ends of thebox, all four corner wipers opcrating simultaneously together,

. These corner. wipers are each preferably about ahalfinch wide for boxes .of average height, but may be made, wider or narrower if desired. As soon as the corner wipers move in contact with the. blank and corner, they are tilted against the corners andqends of the box, and in tight wrapwork are forced to bear against them with a resilient cushioning, and yielding pressure as they move inwardly. on the opposite ends of the box from the opposite corner of each-end toward eachother, and after each wiper has completed its workitistilted backwardly clear away from the ends of the box and makes: its return stroke without contact with the ends of the box. 7

The blank we preferably use for loose Wrap .work is illustrated in Fig. 9, and the shaded portions alongits -marginal edges represent allof the surface of it that is coated with adhesive gum.

This loose wrapping blank is .ofa trifle different form from the tight wrap blank shown in Fig. 8, inasmuch as it is not-pro vided with the inner notched cornersbetween the sides of the blank and its ends. Both the tight and loose wrapping blanks are cut out to'the proper sizes to wrap around each size of boxes to be wrapped.

In loose wrap work the wipers engage the ends of the sides of the blanks and carry them loosely around and over onto the ends, pushing the ends in loose. contact-with the opposite corners and ends-of the box, and when they arrive at the end of their inner blank end pushing stroketheyaretilted by the-rack bar 79 and pinion 86 andare. forced directly against the opposite ends of the box with a resiliently cushioningand yielding pressure, which glues the gummed edges of the ends of the blank tightly against the ends ofthe box, and they are held under this yielding-.. cushioning pressure against the ends ofthe box throughout the whole. of

their-backward orireturn stroke, 1

It: will thus be seen that'the-wipers apply wrapping pressures-to the ends ofathe-sides of the blank'andto the opposite ends of the box in reverse order of operationifor tight and loose wrap classes of box covering or wrapping work.

Our; inventlon provides posltively operating, accurately engaging wipers that per form their work with neatness and precision,

might be. made without; departingefrom the spirit of our invention. v

Having described our invention, what we claim as new and desire. tosecure byLetters Patent, is:

I 1. Boxand'b lank corner wipers 'compris- 1 ing suitable supporting -means,- a pair of fre-' ciprocatingirackbars either oneof which is arrangedtodrag the other as desired; and tilting wipers affected by-said rack bars-to tiltrin opposite directionsion their inner. and

outer wiping strokes as required in tight or loose wrap work. r

2-. Boxand blankLcOrner wipers comp-rising reciprocatingtilting wipers arranged to tiltand bear on their forward strokes. and back off on their rearward strokes, and means including cam .actuated gearing and: resiliently tilting wipers for effecting'said movement. of I said -wipers for. tightw rapjz blank wrapping -work.- i

3. Box and blank corner wipersecomprisw ing reciprocating and tilting wipers arranged to advance on their r forward strokes at a slight. distance. from andzclear of the ends of the boxes, and then to tilt against the ends of the blanks and resiliently-pressthem against theendsof thelboxes, and means-ineluding cam actuated-gearing-and resiliently controlled tilting. wipers for; (effectingthese movements ofthe wipers in loosewrap blank wrappingaworln. a

4. In box and blank corner Wi-pers,;the combination of the supporting brackets,- the rackbars; reciprocally. mounted" therein; shafts, piniongearing, mounted thereon and meshing with said rackbars;pinions" on the ends of Fsaid shafts and rack barsin mesh with said pinions: and cam actuated means for operating said rack bars to operati e-said first mentioned pinionsand wiper mechanism arrangedand adapted to be reciprocated by saidfirst mentioned pinionsand rack bars for loose and tight wrap work.-

5. In box and blank end wipers, the com bination of the. spring'controlled tilting wipers, with means-including vertical-zand horizontal reciprocating rackbarsand intermediate l-pinion connecting mechanism for reciprocally operating. saidwipers, said trolled tilting hinge-movement, a block ar-' ranged to support each'wiper and its hinges atone end, a pair of rack bars p voted at one end to sald block, a geararranged to'be shifted from one rack bar to the other as desired, and means including cam actuated lever mechanism for operating said wipers as desired to effect either tight or loose wrap work.

7. In box and blank corner and end wipers, the combination of the supporting brackets, the box and blank supporting and plunger reciprocating mechanism on said supporting brackets, the block pivotally hinged to said support, the wipers pivotally hinged to said block, the shaft supported shiftable pinions mechanism, the vertical and horizontal rack bars connected by said pinions, said horizontal rack bars being pivotally hinged to said blocks, and means including the cam operated mechanism for reciproeating said vertical rack bars.

8. Box and blank cornerwipers for tight and loose wrap work, comprising supporting mechanism, reciprocating wipers arranged to engage the corners of blanks on their inner reciprocal strokes for tight wrap work and to back off on their return stroke on tight wrap work, and that will advance on their forward stroke without pressing the ends of the blank against the corners and ends of the box, but will move against and press the ends of the blanks against the endsv of the box and will continuously exert pressure against the ends of the blanks and the end of the box on their re-. turn reciprocal stroke movements for loose wrap work, said mechanism comprising means including a pair of differently moving .rack bars and a shifting gear and cam and lever mechanism for operating the same to effect either class of wrapping work when desired.

9. The combination of the frame, the supporting brackets secured to said frame, the

vertical and horizontal rack bars recipro-' cally mounted in said brackets, with the. square shaft journaled in said brackets, the

gears slidably mounted thereon and arranged to mesh with said vertical and horizontal rack bars, and arranged to be moved on said square shaft from one rack bar to another, with the resiliently supported wipers arranged to be operated by said rack bars and gears to effect both tight and loose wrap work as desired.

10. The combmation of the supporting box frame provided *with the u p r and I lower "blank supporting plungers and their operating mechanism, the wiper support brackets secured to said frame, means for adjusting 'saidbrackets to and from saictplungers, the wiper mechanism slidably adjustable on said brackets to fit boxes of different sizes, said wiperrhechanism]comprising suitable blank 'corner""ei 1'gaging viper emb s a uppo tin o k P otally hinge'dto each wiper, a spring arranged at the hinge end secured to said block and wiper to hold each wiper under a blank engaging resilient pressure, a pair of rack bars at each end of each wiper supporting brackets, each rack bar of each pair being pivotally connected atone end to said block in such a manner that when one rack bar is moved it tiltsthe block and moves the other rack bar to follow the movement of the moved rack bar which tilting movement. of

said block also tilts the wiper pivoted to it' and means including a gear slidable laterally from one rack barto the other, and ineluding cam actuated lever controlled gearwipers pivotally connected to said sliding elements, and means for reciprocating said shdmg elements, said sliding elements being arranged to effect an inward tilting of the wipers in one direction of their movement, and an outward tilting in the opposite direction of movement.

12. The combination with a frame and standards mounted thereon which are adjustable toward and away from each other, of pairs of brackets mounted on said standard, the brackets of each pair being'adjust able toward and away from each other in directions at right angles to the movement of the standards, a pair of rack bars slidably mounted in each bracket, a block piv otally connected to, each pair of rack bars, a

spring pressed wiper on each block, a shiftable pinion for engaging one or the other rack bar in each pair, and means for operating all of said pinions simultaneously.

13. The combination with a frameand standards mounted thereon and adjustable toward and away from each other, of pairs of brackets adjustably mounted on the standards, to be moved toward or away from each otherat right angles to the movement of the standards, a pair of rack bars slidably mounted in each bracket, a block pivotally In testimony whereof weafiix our signa- 10 connected to each pair of rack bars, a spring tures in presenceof tWo itnesses. I pressed Wiper pivotally connected to each block, a shaft mounted in each standard a iAg g above the rack bars, gears slidably but non- ALBFRT E rotatably mounted in said shafts and adapt- J ed to mesh with one or the other rack bar in Witnesses:

each pair, and a cam operated rack and pin- G. SARGENT -ELLIOTT,

ion mechanism for rotating said shafts. ADELLA M. FoWLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patients,

' Washington, D. C.

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