US1740411A - Folding machine - Google Patents

Description

Dec. 17, 1929. L. J. LAMBERT FOLDING MACHINE Filed Oct. 16, 1924 5 SheetsSheet 1 Inven for L ea J In mer t (w fittarnay Filed Oct. 16, 1924 5 Sheets-Sheet 2 Haven; 0 r

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Dec. 17, 1929. L, -LAMBE T 1,740,411

FOLDING MACHINE Filed Oct. 16, 1924 5 Sheets-Sheet 3 77 32 m7 m5 WW /W Inventor Leo JLamberf Dec. 17, 1929. JQLAMBERT 1,740,411

FOLDING MACHINE Filed Oct. 16, 1924 5 Sheets-Sheet 4 In ventor 7 Leo JLamfier-t Elia rn cg Dec. 17, 1929. J LAMBERT 1,740,411

FOLDING MACHINE Filed Oct. 16, 1924 5 Sheets-Sheet 5 lnvenlar Le 0 cl Lamber flit orn ey tries LEO J. LAMBERT, OF SALEM, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNITED SHOE MACHINE-RY CORPORATIUN, OF PATERSON, NEW JERSEY, A. COR- PORATION OF NEW JERSEY FOLDING- MACHINE Application filed October 16, 1924.

The present invention relates to folding machines, and more particularly to machines for folding a binding strip around the edge of a boot or shoe upper to which it is attached.

The chief object of the invention is to improve upon present-day machines of the above-described character, to the end that their construction may be simplified and their cost of production reduced.

With this and other objects in view, the nature of which will be made clear in the course of the following description, the invention consists of the folding machine a preferred embodiment of which is hereinafter described, illustrated in the accompanying drawings, and defined in the appended claims.

in the accompanying drawings, Fig. l is a perspective, with parts broken away for clearness, of a machine constructed according to a preferred embodiment of the present invention; ig. 2 is a side elevation of the same, partly in longitudinal section; Fig. 3 is a perspective of a portion of the machine, upon a larger scale; Fig. 4i is a detail plan, also enlarged, illustrating a step in the operation of the machine; Fig. 5 is a vertical section taken upon the line 55 of Fig. 2, looking in the direction of the arrows; Figs. 6, 7 and 8 are enlarged vertical sections taken, respectively, upon the lines 6-6, 77 and 38, respectively, of Fig. 11; Figs. 9 and 10 are enlarged perspectives illustrating two steps in the operation of the illustrative machine; Fig. 11 is a perspective of the upper. forward portion of the machine; Fig. 12 is an enlarged vertical section taken upon line 12-12 of Fig. 11 looking in the direction of the arrows; Fig. 13 is an enlarged perspective, partly broken away, of a portion of the mechanism shown at the left of 3; and Fig. 1 is a perspective of a portion of the mechanism shown in ll 13, but with various elements separated from one another, and with parts broken away, for clcarness.

The invention illustrated in the accompanying drawings in connection with the folding of a binding strip 2, Figs. 4:, 6 to 10. and 12, of cloth, silk and the like. around the edge 4- of a sheet of leather or other material (5, such as a boot or shoe upper. An edge 8 of Serial No. 743,932.

the binding strip is sewed to a face 10 of the shoe upper along the edge 4, so that the sheet and the strip extend at an angle to each other from the secured-together edges l and 8. The stitches are shown at 12 as extending preferably through, or over and around, a reenforcing cord 1 f positioned upon the other face 16 of the shoe upper, along the edge 4- It will be understood that the invention is equally applicable to other articles than that which is herein chosen for purposes of illustration, and the elements of the article need not necessarily be of the relative dimensions shown. It may be desirable, for example, to fold an element of relatively large dimension over the edge of an element of relatively small dimension. For definiteness, the element that is to be folded will hereinafter be referred to in the specification and the claims as the strip, and the element about the edge of which the strip is to be folded will be hereinafter referred to as the sheet, stock, upper, work, etc., though the adopted terminology may not be strictly applicable to the specific article which maybe under consideration. With this understanding, the chief objectof the invention is to fold properly a strip, such as the binding strip 2, from the position illustrated, for example, in Figs. 6, 7, 8 and 12, into the position illustrated at the left of Figs. 9 and 10.

The shoe upper is initially placed in the preferred machine upon a platform or support 24, Figs. 1, 2 and ito 12, with the face 10 of the upper in contact with the upper surface of the support. The support is provided with a comparatively sharp edge 25 beyond which the strip 2 is adapted to be disposed, as illustrated in Fig. 12, with the portions of the strip that are adjacent to the stitches 12 below the said upper surface of the support. Rearward of the support edge 25, the support is provided with a second edge 27, to one side of the edge 25, and separated therefrom by a space 29, as shown more particularly in Fig. 11. Beneath the edge 27, the support is hollowed out, the hollow being gradually inclined first, as shown at 31, 6. then curving over more at 33, 7, and finally becoming quite restricted in area, and of sharper curvature as shown at 35, Fig. 8.

The sheet is adapted to be advanced through the machine step by step by a feed point 30 and a cooperating feed blOCK 41. As the sheet is thus advanced, the hollow 31, 33, 35 engages the strip and gradually, but firmly, forces 1t outward, from the position illustrated in Fig. 6 to theposition shown in Fig. 8, which latter position it substantially occupies at the time that it reaches the space 29. When it is advanced beyond this space, the comparatively sharp edge 25 bites into the angle between the sheet and'the strip close to the stitches as shown in Fig. 12. The space 29 permits the sharp edge to work more of fectively than if the edges 27 and 25 were continuous. As will be clear from a comparison of Figs. 8 and 12, the sharp edge 25 extends farther to the right than does the edge 27.

In this condition, the stock is advanced to a plow 34 that bends the free edge 26 of the strip nearly vertical, as illustrated in Fig. 12. The plow is mounted upon a stationary bracket 61. Successive portions of the strip 2 are thus treated and thus successively presented to the action of a folder 32. The folder 32 moves at first parallel to the plane of the upper, until it reaches the position illustrated in Fig.9, and then obliquely toward the plane of the upper, from the position of Fig. 9 to that ofFig. 10. Toward the endof its travel, the folder engages a portion of the strip just forward of the plow 34, as is illustrated in Figs. 9 and 10. This oblique movement of the folder results in a pulling action, upon the portion of the strip 2 that it engages. The folder thus not only folds the margin, but pulls it, as well. The pulling effect is increased towards the end of the movement of the folder. This combined folding and pulling action would not, however, by itself, suffice, for the strip would have a tendency to slip past the folder, instead of being pulled along by it. To prevent this happening, therefore, the folder is caused to engage the strip against a downwardly inclined face 246 of a member 153 at the end of its movement.

The member 153 may conveniently be the retainer. During the subsequent movement of the folder, the folder positively drags the folded strip frictionally past theretainer 153, preventing any slipping, and safely laying the portion ofthe margin which it engages fiatinto contact with the face 16 of the upper.

At the-end of itstravel, the folder presses down hard against the strip. This rubbing and pressing action ofthe folder will cause This accomplished, the plow is retracted. The lower feed block 41 and the upper feed point 30 thereupon grip the upper between them, and advance the stock another step. The feed point and the feed block release their hold on the upper just after the retainer has gripped the upper. They thereupon retrace their movement, during the action of the folder, the retainer 153 helping to hold the stock stationary. The cycle of operation is then repeated. The margin thus becomes folded step by step.

The feed mechanism of the illustrative machine, comprising the feed block 41 and the feed point 30, is driven from a driving shaft 66, and is described more completely in copending applications by Andrew R. Ridderstrom, Serial No. 352,987, filed January 21, 1920, and Serial No. 407,336, filed September 1, 1920. The former matured, on February 24, 1925, into Letters Patent No. 1,527,395. The feed block 41 is shown more particularly in Fig. 2 as integral with a plate 134. The

support 94 is provided with a diagonally dis posed cylindrical opening 100, Figs. 1 and 2, within which is slidingly mounted a diagonally cylindrical block 102 the upper flat face of which is substantially horizontal. The cylindrical block 102 is adapted to be actuated by an eccentric or crank pin 106 of the drivshaft 66. The eccentric or crank pin is r0- tatably mounted in the block 102. Rotative movement of the shaft 66 will be converted by the eccentric into combined sliding and oscillating or rotative movement of the block 102 and this, in turn, will effect a rocking movement of the rocking support about the rod ,96.

The feed point 30 is pivotally mounted at 110 upon the rocking'support 94 so as to be rocked therewith and with the lower feed block 41, and is normally maintained in contact with the feed block by a coiled spring 112.

As the driving shaft 66 is rotated, the rocking support 94 is rocked back and forth, imparting an oscillating movement to the lower feed block 41 and the upper feed point 30 which are carried thereby. This effects an intermittent separation of the feed point 30 from the feed block 41 through the action of the cylindrical block 102. Further description will be found in the said applications.

The folder 32 and its actuating mechanism are very similar to those illustrated, described and claimed in a copending application Serial No. 705,228, filed April 9, 1924. It is driven from a spiral cam 154 that is fixed to the shaft 66. The rotation of the cam 154 effects the reciprocation of a pin 152 that is connected to a segmental gear7l that is loosely mounted upon a pin 69. The gear 71 meshes with a rack 73 that is carried on the under side of a horizontally disposed support 75. The support 75 and the rack 73 Jcarried thereby are. disposed substantially atright angles to the line of feed. Rocking of the gear 71 is therefore converted into a reciprocating movement of the support 75 in a horizontal plane and at right angles to the line of feed. The folder 32 is mounted upon the support 75 so as to move therewith. This construction, therefore, causes the folder to reciprocate horizontally along the line 26 at right angles to the line of feed.

A sub-support 77, Fig. 13, is pivoted to the support 7 5 about a pivot 79, Fig. 1d. The folder is pivoted to the sub-support 77 about a pivot 81 that is perpendicular to the pivot 79. When the folder reaches a predetermined position in its path of movement, its tail 83 engages an abutn'ient 85, Fig. 3. Further travel of the support 75 therefore causes the abutment to act against the tail 83, effecting the pivotal movement of the folder about the pivot 81. As the support 75 continues its travel, the folder is caused to ride over the downwardly inclined face 246 of the retainer 153, the retainer being situated in the line of travel of the folder for this purpose, and being shaped to effect this result. This engagement of the folder with the retainer is permitted by the sub-support 77 pivoting about the pivot 79 in a direction at right angles to the direction of pivotal movement of the folder about the pivot 81.

Upon the return movement of the support 75, a spring 87 effects the return of the subsupport 77 to its normal position, and a spring 89 performs a similar function for the folder 32. The spring 87 is shown as a plurality of leaf springs fastened at one end between fixed abutments 91 and engaging at the other end an abutment 93 that is integral with the sub-support 77. The spring 89 is also constituted of a plurality of leaf springs and is fastened at one end 195 to a support 365 and its other end engages a hook 97 that is integral with the folder 32. The end 195 may be fastened by riveting, or in any other desired manner.

The abutment 85 is rendered yielding to permit the folder to yield when occasion requires. To this end, it is slidably mounted in a groove 99 that is disposed in the forward portion of the frame of the machine, at right angles to the direction of feed, and parallel to the groove in which thesupport 75 is slidably mounted. A block 103, Fig. 3, is fastened to a projecting horn 206 of the support 95 by pins 105, and acts as a common guide between the slidably mounted members 75 and 85. A coil spring 107 is interposed between the block 103 and the abutment 85 to hold the abutment normally in the extended position indicated in the drawings. The

spring 107 is stronger than the springs 87 and 89, so that it will not be compressed until after a force more unyielding than the springs 87 and 89 is opposed to the spring 107. An adjustable stop 109 at the other end of the abutment adjustably engages the abutment to adjustably limit the normal position of the abutment. This stop adjustably determines the time of engagement of the tail 83 by the abutment 85, and therefore convtrols the degree of movement of the folder 32 about its pivots 81 and 79. This movement, in turn, determines the degree of pull of the folder against the strip 2.

Summarizing the operation of the preferred machine, as thus far described, the shoe upper is advanced over the support 2 1, step by step, by the feed point 30 and the feed block 11; the retainer 153 helps to hold the stock stationary during pauses in the feed; and the folder 32 is actuated, first in a plane parallel to the line of feed along a line at right angles to the line of feed, and later obliquely to the plane of the material, against the retainer, during pauses in the feed, to fold successive portions of the strip 2, step by step after the strip has first been initially folded, as previously described. A gage 136 secured by a screw at 4:38, is provided to engage the edge 4 of the stock.

Among the simplifications in structure of the present invention is a novel retainer-operating mechanism. The retainer 153 is carried upon a shaft 198 that is adjustably clutched at 220, 222 to a shaft 182, as is described in the said copending application, Serial No. senses. A coil spring 216 yieldingly connects the shafts 182 and 198 together. The shaft 182 is provided with an arm 184 having a freely pivoted roller 186 that is engaged by a cam 188 upon the shaft 66. Rotation of the shaft 66 thus effects a lifting of the retainer 153 through a rise in the cam 188, and the spring 216 returns the retainer when the roller 186 engages other portions of the cam 188.

The support 95 is provided with a bearing 108 through which and through a bearing 67 of the machine frame the shaft 66 extends. The support 95 rests upon a lug 205 of the machine frame, and is held in position by pins 207 that extend through oppositely disposed perforated lugs 109 of the frame, and into correspondingly disposed openings 111 of the support 95.

Many details of the illustrative machine have not been illustrated herein, and many illustrated parts have not been described, be cause unnecessary to an understanding of the present invention, and because full particulars may be obtained in the aforesaid applications. The elements of novelty, furthermore, though fully explained, are by no means restricted to the exact embodiments thereof that are illustrated and described herein. lllodifications and changes will readily occur to:persons skilled in the art, and all such are considered to fall Within the scope of the invention,as defined inthe appended claims.

What-is claimed is:

l. A machine for folding a strip around the edge of a sheet material to one face of which, along the said edge, an edge of the strip is secured so-that the sheet and'the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support, a member for engaging successive portions of the sheet near the secured-together edges and for holding the sheet against the support, means for engaging portions of the strip adjacent to the said successively held portions of the sheet, and means for actuating the strip-engaging means to drag the engaged portions of the strip into .contact with the other face of the sheet.

2. A machine for holding a strip around theedge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support, a member for engaging thesheet near the secured-together edges and for holding the sheet against the support. means for moving portions of the unsecured edge of the strip across the secured-together edges, and means for engaging the moved portions of the strip and dragging them into engagement with the member .and past the member into contact with the other face of the sheet.

3. A machine for folding a strip around the edge of a sheet of material to one face of which, alongthe said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for moving portions of the unsecured edge of the strip across the secured-together edges, a member, a folder, andmeans for actuating the folder to engage the moved portions of the strip and to fold them into engagement with the member and past the member into contact with the other face of the sheet.

4. A'machine for folding a strip around the edge ofa sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for feeding the sheet and the strip step by step, a retainer for holding the sheet against movement during pauses in the feed, means for moving portions of the unsecured edge of the strip across the secured-together edges, a folder, and means for actuating the folder during pauses in the feed to engage the-moved porthe sheet and the strip over the support,

means for moving portions of the unsecured edge of the strip across the secured-together edges when the said portions reach a predetermined position upon the support, a memher, a folder, and means for actuating the folder to engage the moved portions of the strip and to fold them into engagement With the member and past the member into contact with the other face of the sheet when the sheet. and the strip are fed to a second predetermined position upon the support.

6. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, thesaid machine having, in combination, a support upon which the sheet is adapted to rest with'the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, and means adapted to be actuated in a planesubstantially parallel to the support to engage the strip and move it into contact with the other face of the sheet.

7. A machine for folding a strip around the .edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, anda single means adapted to engage the strip and move it into contact with the other face of the sheet.

8. A machine for folding a strip around the edge of asheet of material to one face of which, along the said ec ge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the saidmachine having, in combination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, and means for feeding the sheet and the strip to the said portion of the support edge, the support edge having a second portion rearward of the first-named portion in the line of feed.

9. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an ed e beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, means for feeding the sheet and the strip to the said portion of the support edge, the support edge having a second portion rearward of the first? named portion in the line of feed, there being an opening between the two portions and means for movin the strip into contact with the other face of the sheet.

10. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and t 1e strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a. support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, a member for engaging the sheet near the secured-together edges at a point adjacentto the said portion of the support edge, and means for engaging portions of the strip and dragging them into engagement with the member and past the member into contact with the other face of the sheet.

11. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, means for feeding the sheet and the strip to the said portion of the support edge, the support edge having a second portion rearward of the firstnamed portion in the line of feed, there being an opening between the two portions, a member for engaging the sheet near the securedtogether edges at a point adjacent to the said portion of the support edge, and means for engaging portions of the strip and dragging them into engagement with the member and past the member into contact with the other face of the sheet.

12. A machine of the class described having, in combination, a folder, means for reciprocating the folder, a shaft having a cam, means adapted to be reciprocated by the cam during the rotation of the shaft, and means controlled by the cam reciprocated means for actuating the folder reciprocating means.

18. A machine of the class described having, in combination, a folder, a shaft having a cam, means adapted to be reciprocated by the cam during the rotation of the shaft, the folder having a rack, a pivoted segmental gear meshing with the rack, and a link con necting the gear with the reciprocated means, whereby the gear is rocked about its pivotal point to effect the reciprocation of the folder.

14f. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges an angle to each other, the said machine having, in combination, a folder, and means for actuating the folder substantially parallel to the plane of the sheet to cause the folder to engage a portion of the strip and for thereupon actuating the folder towards the other face of the sheet to fold the engaged portion of the strip into contact with the said other face of the sheet.

15. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, means for moving portions of the unsecured edge of the strip across the secured-together edges, a folder for engaging successive portions of the moved strip, a memher and means for actuating the folder past the member, the folder and the member being constructed and arranged to engage the said portions of the strip frictionally between them during the actuation of the folder past the member to cause the said portions of the strip to be dragged frictionally past the member.

16; A machine of the class described hav ing; iii-combination, a retainer, a shaft havinga cam, and means for biasing the retainer towards a predetermined position, the cam being adapted to actuate the retainer in opposition to the biasing means during the rotationof the shaft.

17. A folding machine having, in combination', means for feeding material step by step, means for foldingthe material, a retainer for holding the material. against movement during pauses in the feed, a spring tending to maintain the retainer in efiective position, and a shaft having a cam, the cam being adapted to actuate the retainer in opposition to the force exerted by the spring during the rotation ofthe shaft.

18. A- machine of the class described having, in combination, a frame having a bearing, opposed openings and a lug, a support adapted to rest upon the lug and having opposed openings adapted to registerwith the firstnamed openings, means extending through the openings for maintaining the support upon-the frame, means for feeding material mounted'upon the support, the support having'a bearing, and a shaft for actuating the feeding means mounted in the bearings.

19; A folding machine having, in combination, a frame having a bearing and a lug, a'support adapted to rest upon the lug, means for securingthe support to the frame, means for-feedingmaterial step by step, means for holding the material against movement dur ing pauses'in' the feed, means for folding the material, the support having abearing, and a shaft for actuating the feeding, holding and folding means mounted in the bearings.

20: A machine for folding a strip around theedge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angleto each other, thesaid machine having, incombination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of tliesaid surface, means for feeding the sheet and the strip over the support, a portion of the support edge being adapted to engage the sheet and the strip in the said angle, a plow situatedlforward of the said portion of the support edge in the line of feed for folding the strip around the secured-together edges, and'means situated forward of the plow in the line of feed'and adapted to be actuated in a plane substantially parallel to the support to engage the folded strip and move it into contact'with the other face of the sheet.

21'. A machine for folding a strip around the'edge of a sheet material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip 'n combination, :1

extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support over which the sheet and the strip are adapted to be fed, a member for engaging successive portions of the sheet near the secured-together edges to hold the sheet stationary against the support, means for engaging portions of the strip adjacent to the said successive portions of the sheet while the sheet is held stationary against the support, means for actuating the strip-engaging means while the sheet is held stationary against the support to drag the engaged port-ions of the strip into contact with the other face of the sheet, and means for automatically relatively actuating the member and the support towards and from each other first to hold the sheet stationary against the support and then to release the sheet to permit it to be fed over the support.

22. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said ec ge,van edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, support, a member for enaging the sheet near the seemed-together dges to holdthe sheet against the support, neans for m 'ng portions of the unsecured edge of the strip across the secured-together edges into substantially the plane ofthe sheet, means for engaging the moved portions of the strip and dragging them into engagement with the member and 'past the member into contact with the other face of the sheet, and means for relatively actuating the member and the support towards and from each other to hold the sheet against the support and to release the sheet. 1

28. A machine for folding a strip around the edge of a sheet of naterial o one face of which, along the said edge, wedge of the strip is secured so that the sheet and the strip extend from the secured togcther edges at an angle to each other, the said machine having, in combination, a support upon which the sheet is adapted to rest with the said one face in Contact with thesurface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, the support being gradually inclined adjacent to the said edge to engage the strip and gradually move it outward towards a position across the secured-together edges.

24:. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together e ges an angle to each other, the said machine having, in combina 1, a support upon which the sheet is ada; a to rest withthe said one face in contact with the surface of'the-support,

the sup, ;ort having an edge beyond which the strip is adapted to be disposed to one side of the said surface, the support being gradually inclined adjacent to the said edge to the strip and gradually move it outward to- .vards a position acre "he secured-together edges, and means for engaging the strip and moving it into contact with the other face of the shoe 25. A machine for folding astrip around the edge of a sheet of material to one face of which, along the said edge, on edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support upon which the sheet is adapted to rest with the said one face in contact with the surface of the support, the support having an edge beyond which the strip is adapted to be disposed to one side of the said surface, the support being hollowed out at gradual incline aojacent to a portion of the said edge to engage the strip and gradually move it outward towards a position across the secured-toge r edges, a second portion of the said edge disoosed forward of the first-named portion in the line of feed be ng adapted to engage the sheet and the strip in the said angle, and means for moving the strip into contact with the other face of the sheet.

26. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, edge of the strip secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a folder for engaging successive portions of the strip, a member having an inclined face, and means for actuating thd folder past the member, first in one direction and then in another direction past the inclined face, the folder and the member being cons ructed and arranged to engage the said portion of the strip friction ll5 between them durin' the actuation of the folder past the member to cause the said portions of the strip to be dragged frictionally past the member.

27. A machine for folding a strip around the edge of a. sheet material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support, means for engaging successive portions of the strip near the secured-together edges, and means for actuating the strip-engaging means first in one direction to engage the said successive portions of the strip and to drag the engaged portions of the strip into contact with the other face of the sheet and then in another direction to return the strip-engaging means without engaging the strip.

28. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support, means for moving portions of the unsecured edge of the strip across the secured-together edges, reciprocating means for engaging the moved portions of the strip and dragging them into contact with the other face of the sheet when actuated in one direction and for releasing the strip when actuated in the opposite direction, and means for reciprocating the reciprocating means.

29. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support, means for feeding the sheet and the strip over the support, a folder, and means for actuating the folder first in one direction substantially parallel to the support to engage the successive portions of the strip and to fold them into contact with the other face of the sheet, and then in another direction to return the folder without engaging the strip.

30. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a folder for engaging successive portions of the strip, a member and means for actuating the folder first in one direction and then in another direction past the member and into contact with the other face of the sheet, the folder and the member being constructed and arranged to engage the said portions of the strip frictionally between them during the actuation of the folder past the member to cause the said portions of the strip to be dragged frictionally past the member and into contact with the said other face of the sheet.

31. A machine for folding a strip around the edge of a sheet of material to one face of which, along the said edge, an edge of the strip is secured so that the sheet and the strip extend from the secured-together edges at an angle to each other, the said machine having, in combination, a support over which the sheet and the strip are adapted to be fed, a member for engaging successive portions of the sheet near the secured-together edges and for holding the sheet against the support, means for engaging portions of the strip adjacent to the said successively held portions of the sheet, and means for actuating the strip-engaging means first in one direction along path above the support to drag the engaged portions of" the strip: into contact; with t'he other face'of thessheet, andthenih; another. direetiomto return thestrip-engag ing meanswithout engaging'the sheet;

In testimony whereof, I havehereuntbsubscribed; my namewhis lfith dayof. October;

LEO J. LAMBERT.

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