US1702379A - Folding machine - Google Patents

Description

F. M. couRsER FOLDING MACHINE Feb. 19, 1929.

Filed April 15, 1921 5 Sheets-Sheet Feb. 19, 1929. 1,702,379

. F. M. CQURSER FOLDING MACHINE Filed April 15, 1921 3 Sheets-Sheet 2 Wvavrma Feb. 19, 1929. 1,702,979

1 1-. M. couRsER FOLDING MACHINE Filed April 15, 1921 3 Sheets-Sheet 3 Patented Feb; 19, 1929.

UNITED STATES PATENTOFFICE.

FRED M. oounsnn, or HAVERHILL, mnssaonusn'r'rs, ASSIGNORTO cumin!) saunas- CHINEBY oonronmron, or rnrnnson, NEW JERSEY, {A conrem'rron or new JERSEY.

Application filed April 15,

This invention relates to the finishing of the edges of pieces of sheet material and is more particularly concerned with the formation of so-called French edges on pieces of leather.

It is customary in the manufacture of cer tain styles of boots and shoes to bind the edges of parts of the uppers with a strip of fabric. To this end such a strip is stitched to the edge of the vamp, quarter or other piece, the edge of which is to be bound, cement is applied to the strip, and then the tree portion of the strip is folded about the edge of the vamp, quarter or other piece and pressed down so that Q the cement may hold itfirmly in place. The

foldin of a binding strip, after the strip has been attached to the leather or other piece of material and cemented, may be considered as taking place in two steps. First the tree portion of the strip should be pulled out until the stitches smile, that is, until they can be plainly seen and second, the portion of the fabric which then extends beyond the edge of the leather should be drawn tightly about said edge and laid down upon the mar gin of the leather.

One feature of the present invention relates to improved means for wiping out the strip of binding. In the illustrative machine this takes the form of a spring-pressed plate set at an angle to the line of feed and adapted, as the work is fed, to wipe out the free portion oi the attached binding strip and to cooperate with the folding means in drawing the binding tightly about the edge of the leather or body portion of the work.

Another feature relates to improved folding mechanism which, as herein illustrated, comprises a pair of grippers adapted to seize or grasp the tree portion of the fabric and pull it over the edge of the leather. WVith this construction an extremely effective pull is exerted upon the binding strip with the result that the finished edge is smooth and even.

These and other features of the invention including certain details of constructionand combinations of parts will be described as embodied in an illustrated machine and pointed out in the appended claims.

Referring to the accompanying drawings,-

Fig. 1 is a front elevation of a folding ma chine in which the present invention is em- ]!OLDING MACHINE.

1921. Serial No. 461,540.

bodied, certain parts being shown in section;

Flg. 2 1s a perspective of a portion of the machine viewed from the rear; v y y 1 Fig. 3 is a pers ective on an enlarged scale at the feeding, olding and pressing memers; v

Fig. 4 is a perspective showing a piece of worlr in process of being operated upon;

Fig. is an end elevation of a portion of the machine;

Fig. 6 is a perspective of the same parts shown in Fig. 5; p,

7 is a detail in perspective of part of thelpresser and feed-footlifting mechanism, {111C Fig. 8 is aperspective of the upper portion of the work supporting post.

Before proceeding to a detailed description or the machine a brief outline of its mode oi operation will be given.- The machineis designed particularly to fold a binding and will be described particularly inrelation to such work although the machine may be used to fold the usual skived edge if desired. In the production of aFrench edge a stri of fabric, commonly about three-eighths 0 an inch wide, is laid upon the margin of the grain side of a piece of leather and stitched to the leather by a line of stitcheswhich lies close to the registering edges of the strip and the leather; and then the free portion of the strip or binding is folded around that portion of itself which is attached to the leather, and brought down upon the flesh side of the leather. Prior to the folding operation, cement has been applied to the binding so that when its free portion has been folded as described and brought down upon the fieshside of the leather, it adheres firmly to the leather.

Referring now more particularly to Figs. 3 and 4, the work comprises a piece ofinaterial 100 such as leather to which a strip of binding 200, such asfabric, has been attached by a line of stitches300. The arrows in the figures indicate the direction of feed oft-he work; and in Fig. 4 the leading end of the work has been completely operated upon, that is, the tree portion of the binding has been folded about the edge of .the leather and pressed down upon the flesh side of the leather while the rear or following and oi the work has not yet been operated upon by themachine.

In the use of the machine, assuming that the work has becnprepared, including i applying cement to the binding strip, the operator pulls out a small portion oi the leading end of the binding and turns it upwardly. He then inserts the work in the machine in a manner which will presently be described more in detail with the grain side of the,

leather resting upon the Work support or table 15, the leading end of the binding folded over the leather and located beneath the press or 17, the edge of the work in contact with the edge gage E9, the combined creaser and feed foot 21 and the inner gripper 23 extending into contact or almost into contact with the upturned portion of the binding which has not yet been folded over and pressed down upon the flesh side of the leather and the other or outer gripper 25 spaced from the upturned portion of the binding. Power is then applied to the machine. The presser 17 descends and remains stationary in its lowered position while the two gri ipe 23, and he feed foot 21 descend. At the nine time the outer gripper 25 is swung inwardly until it first presses the upstanding portion of the binding against the inner yielding gripper 23 and then forces the binding inwardly so as to draw it tightly over the outer thin edge of the combined feed foot and creaser 21. About this time the feed foot has descended to force the Work against the lower teed member 27. The presser 17 now rises to release the work, and the two teed members 21, 27 together with the grippers are moved forward 1y in the direction of the arrow in the ligures) to feed the work one step. Atthe end of the feed movement, the p resser 17 descends again to press the newly folded-over portion of the binding against the flesh side of the leather, and the grippers and feed members return to the positions shown in Fig. 3. The cycle, which has been thus briefly described, is repeated continually, the work being fed and the binding folded progre sively by intermittent steps. In order to wipe out that portion of the binding which is on the underside of the leather, a wiper 29 in the form of a thin plate supported upon a spring is oblique ly to the direction of feed of the work. This plate exerts a wiping action upon the under side of the work in a direction outwardly toward the edge of the work and tends to pull the binding outwardly so as to make the stitches smile. With this brief outli no oi" the mode of operation of the machine, its construction will now be taken up in detail.

The feed mechanism comprises, as has been explained, an upper feed member or foot 21 and a lowerfeed member 27. Referring now more particularly to Fig. 1 with occasional references to Figs. 5 and 6, the lower feed member 27 is integral with an Lshaped piece which is fastened by screws 31 to and is thus part of a feed yoke 33 which is pivoted to the frame of the machine about vertical axis coinciding with the axes of the upper and lower pivot screws 35, 37. Carried by a boss at the u; :r right-hand. corner of the yoke, as vieweo. .i Fig. 1, is a stud 39 which is slidable in a vertical socket formed in an eccentric strap "11 mounted upon an eccentric The eccei ric is pivoted upon a disk it), which fast to the driving shaft d3, and may be adjusted so as to ary i s throw by turning a lrnur l thumb-hold 4t? and thereby causing a pin 49 having a tapered end to move lengthwise of the shaft 43, the tapered end acting upon the stem of a screw arricd by the cccentric to move the eccentric substantially transversely oi the shaft 43 against the action of a spring 52. This eccentric mechanism for i'iscillating the feed yoke 33 will not he further described since the details of its construction :t'orm no part of the present invention. This mechanism or may be substantially the same as that shown and described in the patent to Dial et al. to. 718,988. It will be umlerstood, however, that rotation of the shaft 43 through the eccentric mechanism and the pin 39 osciilates the yoke 33 in the desired manner about its pivot screws to cause intermittent feed of the work and that the extent of the iutern'iittent :teed movements may be varied by adjusting the eccentric.

.lhc upper teed member or foot 21 has a stem upon the upper end of which is a hub having a bore to receive the lower end of a rod it, a thulnl'z-screw 53 serving to "fasten the hub r gidly to the rod. This rod vertically slidahle in alined bearings 55 formed in the left-hand end (as viewed in Fig, l) of the uppe arm of the yoke 33- so that the rod oscillates h the yoke. in or. to cause the rod 1, and with it the upper feed member or foot, to rise and iiall at the proper times so as to press upon and release the work, the following mechanism is provided. tne mechan' also to cause i'ly to Figs. to the upper cud of in .i g row more partic 5 and t3. the rod 51 is pi lower end of a which pivoted to the horiz 1 arm (Si oi a bell-crank lever the upright (31-) ot which in turn pivoted to a one. oi a lint; 65. That end oi the 37 remote from he upright :n'ui

it) of the bell-cru i' ii pivoted at (7 to a cranl; ii iii) which is r id w th a u'eildited arm Tl carried by the driving shall 4L3. 'l'he .iell-cranli lever is pivoted ai id to a block To h o the rod '7'? at the lower end of \Yi ilall is s iveled the presser lit". The block T upon from below by a co led is acted which rests at its bottom upon a Jart of the overhanging arm 81. ot the tlrame of the machine. and is pressed downwardly by a second coiled spring Pitihe upper end of which contacts with a sl e through which the rod 7'? is slidable, said ing threaded through a part oi"; tire frame of the machine so as to permit adjustment of the tension of the spring 8?. The spring 83 is stronger than the spring T9 and tends at all times to move the rod TT downwardly until the presser 17 is in contact with the Work or the work table.

Assiuning that the weighted arm 71 is rotating in the direction indicated by the arrow in Fig. 5, the operation of the mechanism for alternately raising and lowering the presser 17 and upper feed member 21 is as follows: lVith the parts in the positions shown, the prcsscr 17 is being held down against the work table 15 by the spring 83. and the link is about to be pulled to the right. W'hen this occurs, the bell crank 61, 63 will be rocked in a clockwise direction about the pivot 73 and will thereby force the rod 51, and with it the feed-toot 21 downwardly. "1. his downward movement will continue until the foot 21 contacts with the table or with the work, it work is being fed through the machine. During this time the pivot Ti-3 has acted a fixed pivot; but as soon as the downward movement of the rod 51 is arrested by contact of the feed foot 21 with the table or with the work. the pivot 57 becomes temporarily tired, with the result that further clockwise movement of the bell crank 61, 6-3 lifts the pivot '73, and with it the rod 77 and presser 17. The rod 77 continues to rise as longthe link continues its movement to the right. As soon the link (55 begins to move to the left and thereby to impart coiiinte1'cl0ckwise rotation to the bell crank 61. 63, the rod 77 begins to descend and continues to descend until the presser 11 once more contacts with the table 15 or with the work. At that moment the pivot 73 ap a in becomes temporarily fixed, and the pivot 57 and rod 51 are raised again into the positions shown. Thus it will be seen that first the pivot T3} and then the pivot 55 acts as a tired pivot. and that the rods 77 and 51 are alternately raised and lowered. The rod 51. as has been explainml. is vertically slid-able in bearings 55 in one arm of the feed yoke 33; and it will be understood that the movements of the feed yoke are timed that such movements in. connection with the operation of the link mechanism impart to the rod 51. and feed foot :11 a fOilF-lllfitltfll :tce'd. that is the foot is lIJ10IlIlll down to clamp the work upon the lower teed member 27, then both the feed foot 21. and member 27 are moved in unison to teed the work forward, then the foot raised, and finally both the foot and lower feed member are returned to their initial positions ready to grip the work again. The presser 17 holds the work upon the work table during the backward movement of the feed foot 21 and lower teed member 27 and is raised before another forward movement imparted. to the work. The work is thus ted intermittently over the table.

It hasbeen stated above that the free portion of the upturned binding 15 seized by the grippers. 23, 25 and pulled over the feed foot 21, said teed toot at that time serving somewhat us a creaser, one of its functions being also to hold the leather from being bent/up wardly by the pull of the grippers uponthe binding. Referring now more particularly to Figs. 2 and 3, the inner gripper 23 (and by inner is meant toward tie body of the work) is pivoted about the stem of a screw 87 carried by a sleeve 89 which is fastened to the rod 51 by a set screw 91, said gripper having integral with it a U-shaped arm 93 which extends around the stem of the feed foot 21. A leaf spring 95, the upper end of which is fastened by a screw 97 (Fig. 5) to the hub of the stem of the feed foot bears with its lower end against the U-shaped arm 93 and tends at alltimes to hold said arm in contact with the stem of the feed foot. The outer gripper 25 is pivoted about the stem of the same screw 87 as is the inner gripper 23 and swung first in one direction and then in the other at the proper times so as first to co-operate with the inner gripper 23 to pull or "told the binding over the'edge of the leather and then to release the binding at the end of an intermittent feed movement, it being understood that the grippers partake of the movements of the feed foot 21 besides having movements of their own. Referring now more particularly to Fig. 1, the outer gripper is connected with the feed yoke 33 by a tension spring 99 which exerts at all times a force tending to rock the gripper away from the inner gripper Q3. The limit of this movement is determined by apin 101 suspended by its head from an eye 103 formed in a stationary part of the machine, the lower end of this pin being provided with a book which may be inserted in any one of a number of holes formed in the tail of the gripper 25, said tail extending on the other side of the rod 51 from the main portion of the gripper 25. In the figures the gripper 25 is shown in raised position, being held in such position by the action of the spring99. This position of the gripper is due to the fact that the rod 51 is occupying its uppermost position. When the rod 51 presently moved downweirdly, the sleeve 89, which is fast to the lower end of the rod. is also moved downwardly; and, since the gripper 25 is pivoted to this sleeve and its tail is held from downward movement by the hook at the lower end of the pin 101. the operative, lower portion of the gripper 25 is swung toward the gripper 23 first to grasp the binding and then to pull the binding over the edge of the leather and over the edge of the combined feed foot and creaser 21. \Vhen the rod 51 is lifted, the spring 99 returns the gripper 25 to the position shown Vith this construction and mounting of the grippersit will be seen that swings the presser about its swiveled connection with the rod 77 therebyswinging the presser proper into a position at an angle to the direction of feed of the work. At the same time that this occurs it will be noted that both the rods 51 and 77 are raised so that the feed foot and grippers as well as the presser are raised above the table 15. Vith the parts thus raised and the presser swung to one side. the right as viewed from the front of the machine as in Fig. 1, the presentation of the work to the machine is greatly facilitated. The operator pulls out and bends up wardly the leading end of the binding and places it in position with the combined feed foot and creaser 21 engaging the edge of the leather, and part of the upturned portion of the binding extending up between the grippcrs 23, 25. The leading upturned end of the binding at this time is at one side (which would be the left-hand side as viewed in Fig. l) of the presser which has been swung to the right and is held in that position. The treadle is then released. whereupon the comlllIlBCl feed foot and creaser 21 descends to hold the work against the table 15, lower feed member 27 and wiper plate 29, the lattier member yielding through its spring 113. While the feed foot and creaser 21 is descending, the gripper 25 will swing to the left and the upturned portion of the binding h h lies in its path Will be grasped by the two grippers 25 and 23 and pulled over theedge of the leather and the edge of the combined feed foot and creaser 21. At the same time, that is during the descent of the feed foot, the presser will swing back (to the left as viewed in Fig. 1) and wipe or push the upturned leading end of the binding over the leather or body portion of the work and in conjunction with this swinging movement will. descend. It has been assumed that the feed foot 91 is at the beginning of its forward feed movement, in which case the presser will not descend far enough to press the binding which beneath it against the leather, but since the leading end of the binding extends only part way beneath the presser in the line of feed, the presser will presently operate upon it.

Assuming then that the work has been pro sented to the machine, power is applied to the driving shaft 43 through the pulley 151 by work as they do so, and the presser 17 de-v scends topress the fold. Vihile the presser remains down, the feed foot and grippers, as well. as the lower feed member 27, swing to the limit of their rearward position and presently descend. As soon as the downward movement of the feed foot is arrestedby the table 15, the presser rises; and the cycle is then repeated. During the forward movement of the work the wiper :29 drags against the under side ofthe work and wipes that portion of the binding which is beneath the leather out from beneath it. In performing this operation it not. only accomplishes the turning of the free portion of the binding outwardly into a posit-ion outside the edge of the leather but also co-operates with the grippers in pulling the binding so as to make the stitches smile and thereby inensuring that the binding shall be pulled tightly about the edge of the leather.

It has been explained above that the oper ator pulls out a portion ofthe leading end of the binding strip 200 before he presentstho work to the machine. In some cases the operator may roughly pull out the whole strip 200 by hand before presenting the work to the machine. In either case the work may be said to be a sheet of ma terial to one face of cation to a machine for doingtihis particular work.

Having thus described myinvention, what I claim as new and desire to secure by Letters Patent of the UnitedStates is: i

1. A folding machine, having in combina tion, a support fora piece of sheet material, and means for grasping the margin of the sheet materialand pulling itover the body portion thereof. i i i Q. A folding machine, having in combination. a support for a piece of sheet n'iaterial.

means fol-gripping the margin of the shoet material by engagement with both sides of p the margin. and means for lnovingthe gripping means in a direction to pull the margin over the body portion of the sheetmaterial.

5. A folding machine. having in combination, a support for a piece of sheet material,

means for gripping the margin of the sheet material yieldingly by engagement with lioth sides of the margin. and means for moving the gripping means in a direction to pull the margin over the body portion. of the sheet material a a 4. A folding machine having in combination. a supportfor a piece of work, means for feeding the work over the support. and means for grasping the margin of the work and pulling it over the body portion thereof.

A folding machine having in combination, a support for a piece of work, means for feeding the Work intermittently over the support, and means for grasping the margin of the Work and pulling it over the body portion thereof.

6. A folding machine, having in combination, a support for a piece of Work, means for feeding the Work over the support, means including a pair of grippers for forming a fold in the margin of the Work, and means for pressing the fold.

7. A folding machine, having in combina tion, a support for a piece of Work, means for feedin the Work over the support, a pair of grippers, means for causing first relative movement of approach of the grippers to g p the margin of the work and then move ment of the grippers in unison to an the margin of the Work over the body portion thereof and means for thereafter pressing the fold.

8. A folding machine having, in combination, a support for the Work, means for feed ing the Work over the support, a creascr for determining the line of fold, a pair of grippers, and means for causing the grippers to engage the margin of the work and pull it over the creaser.

9. A folding machine, having in combination, a support for a piece of Work, a feed foot, means for operating the feed foot to feed the WOIk, a pair of grippers movable with the feed foot, and means for moving the grippers transversely of the direction of feed to form the fold.

10. A folding machine having, in combination, a support for the Work, means for feeding the Work over the support, a creaser for determining the line of fold, a pair of grippers, means for causing the grippers to engage the margin of the Work and pull it over the creaser, and means for pressing the fold.

11. A folding machine, having in combination, a support for a piece Work, feed foot, means for operating the feed foot to feed the Work, a pair of grippers movable with the feed foot, means for moving the grippers transversely of the direction of feed to form the fold, and means for pressing the fold.

12. A folding machine, having in combina tion, a support, means including a combined feed foot and creaser for feeding the work and defining the line of fold, a pair of rippers, and means for causing the 'aners LO seize the margin of the Work and p ill it over the edge of the combined member.

18. A folding machine, having in combination, a support, a combined feed foot and ereaser, means for imparting a four-motion feed movement to the combined member, a pair of grippers, and means for causing the grippers to seize the margin of the Work and pull it over the edge of the combined member, the grippers being mounted to move with the combined member.

the line of fold, pan: of and means for cars in the grippers to I p the in, in of the work and. pull it over the co 1 l0 creaser.

16. A machine for foldin a piece of work, comprising a piece of material to which a strip of binding is attached, having in combination, a support for the Work, a pair of binding engaging grippers located on the do the Work opposite that to which the strip is attached, and means for operating the grippers to pull the free portion of the binding about the edge of the material.

17. A machine for folding a piece of work comprising a piece of material to which a strip of binding is attached, l'iaving, in combination, a support for the Work, a pair of binding-engaging grippers located on the side of the worlr opposite that to which the strip is attached; and means incli'iding a spring for operating the grippers to pull. the free portion of the binding about the edge of the material.

18. A machine for folding a piece of Work comprising a piece of material to which a strip of binding is attached, having, in combination, a support for the Work, a ereaser the operative edge of which registers substantiall with the edge of the material, a pair of binding-enga ng grippers, and means for operating the ippers to pull the free portion of the bra over the edge of the material and the edge of the cr 19. A iachine for folding; a piece of worl; comprisinga piece of material to which a st ip of binding is i tached, having, in combination, a support 119 WORK, a combined feed foot and creaser the operative edge of which registers substantially iv' h the edge of the material, means for opera said menr her to feed the Work, a pair of binding-en- .iraging grippers, and 2;, ins for operating the grippers to pull the free portion of the binding over the edge of the lllilt'Ol'lfll and the edge of the combined member.

20. A folding machine, having in COlIIlJlI12ltion, a support for the Work, means for feeding the Work over the support, a pair of grippers for engaging the margin of the mark and pulling it, and means whereby the localit; on the margin which is engaged by the grippers may be varied.

21. A machine for folding a piece of Work l'ou lit)

comprising a piece of'material to which a strip of binding is attached, having, in combination, a support for the work, means for feeding the work, a pair of grippers for engaging the free portion of the binding and pulling it over the edge of the material, and means whereby the locality on the margin which is engaged by the grippers may be varied.

A machine for folding a piece of work, having in combination, a support for the work, means for feeding the work. a pair of grippers, means for causing the grippers to engage the margin at a predetermined distance from the edge of the material and then to move in unison to pull the margin about the edge of the material, and means for adjusting the initial position ofthe grippers and thereby increasing or decreasing the force of theirpull upon the margin as may be desired.

23. A folding machine, having in combination, feeding and folding members, afold presser, means for operating the members and presser to feed the work, form thc fold and press the fold, and operator-controlled means for imparting to the prcsser sidewise movement with respect to the line of feed to move it out of operative position so as to facilitate presentation of work to the machine.

24. A folding machine, having in combination, feeding and folding members, a fold presser, means for operating themembers and presser to feed the work, form the fold and press the fold, and means capable of operation when the machine is at rest for imparting to the presser sidevvise movement with respect to the line of feed to move it out of operative position so as to facilitate presentation of work to the machine.

25. A machine for folding a piece of work, comprising a piece of material towhich a strip of binding is attached, having in combination, a support for the work, means for feeding the work and for folding the free portion of the fabric over the body material, a fold presser, and means for raising the presser and moving it to one side of the line of feed preparatory to presenting the work to the machine.

26. A machine for folding a piece of work comprising a piece of material to which a strip of binding is attached, having in combination, a support for the work, means for feeding the work and for folding the free portion of the fabric over the body material,

a fold presser, and means for raising the' presser and moving it to one side of the line of feed preparatory to presenting the work to the machine and for moving it back into operative position after the work has been presented.

27. A machine for folding a piece of work, having in combination, a support for the work, folding means, a feed member and a fold presser both arranged to engage theupper side ofthe work, operator controlled means forraising the feed member and fold presser, and mechanism operated thereby for swinging the fold presser to one side of the line of feed.

28. A machine for folding a piece of work, having in combination, a support for the work, folding means,a feed member and a fold presser both arranged to engage theupper side of the work and both located in the path of feed movement of the margin of the to the line of feed, and yielding means or holding the wiper in contact with the work. 30. A machine for folding a piece of work,

having in combination, a support for the work, feeding, folding and fold members all located on the side of opposite that to which the binding isattached, and a binding engagingwiper located on the same side as that to which the binding is attached, said wiper being mounted for yielding movement away from the work but otherwise held fixed.

31. A machine for folding a piece of work, having in combination, a support for the work, feeding, folding and fold pressing members all located on the side of the work opposite that to which the binding is attached, and a binding engaging wiper located on the same side as thatto which the binding is attached, said wiper being in the form of a rib extending at an angle to the line of feed.

32. A folding machine, having in combination, a post of small cross section provided with a work supporting surface on the top thereof there being a free and unobstructed space around said post, a lower feed member extending up through the work supporting surface, an upper feed member, folding and fold-pressing members located above the post, and means for operating all ofsaid members.

33. A machine for folding a piece of work comprising a piece of material to which a strip of binding is attached having, in combination, a support for the Work, a pair of grippers, and means for operating the grippers to grasp the free portion of the binding and for moving them in unison to pull the binding over the material.

34:. A machine for folding a piece of work i ressing t me work comprising a piece of material to which a strip oi binding is attached having, in cornhi ration, it support for the Work, IllQtUlS :t'or feedingthe Work interlnittentiy over the support, and means for intermittently grasping the tree portion of the binding and pulling it over the Ineteriei.

35. A folding machine homing in combinetion, a support for e piece of Work, a teed toot, means for 1n ring the teed foot toward end ifr n1 the W011 and in e direction to feed the Work, at foider ferried by the feed toot and means responsive to rnoven ent of the foot toward the Work for moving the folder trzinsi'nreiy of the direction of feed.

36. The method oi? folding strip around the edge of it sheet oi? materiel to one have oi? which along the said edge, an edge oi: the strip is secured so that the sheet and the strip extend from the secured-together edges :it an angle to each other, the said method comprising first gripping successive portions oi the strip, then folding the gripped portions around the secured-together edges, and ii 1iir pressing the folded portions into C(llltitCtwiti'i the other face of the sheet.

A machine ifor i oiding at strip around the edge of :1 sheet of materiel to one face oi which, along the sztid edge, an edge oi the strip is secured so that the sheet and the strip extend from the secured-together edges eten angle to each other, the said machinehaving, in combination means Ior gripping successive portions of the strip and foiding the gripped portions er nnd the securediogether edges and means for pressing the foided portions into contact with the other iece oi the sheet 38. A machine for ioidinp; a strip around the edge of a sheet of material to one iace of which, eiong said edge, on edge of the strip s tired so that the strip and the sheet (1X- tend from the secured-togethor edges at an zii'igrie to each other, said machine he ing, in

conihiintiion, two grippinjznrs :u izipted to intermiti'ently grip sucee ire portions of the unsecured eerie ot the strip end pnii them across and 1: 1d them around the secured tog-ether edges. e :toid presser for .interniit tentiy p tossing: the iioided portions and means for oetuetin the rij iper jaws and the fold portions thereof as the work is fed, a spring carried by the support and actin to urge the Wiper toward the Work, and a step to iimit the extent of such movement.

In testimony whereof I love signed my name to this specification.

FRED M. COURSER.

, oi. binding is attached 1 :iv- :7

(iii

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