US1270753A - Folding-machine. - Google Patents

Description

P. R. GLASS.

FOLDING MACHINE.

APPLICATION FILED om. I2. IsIz.

1 ,270,753. Patented .huw 25, 1918.

4 SHEETS-SHEET 2.

P. R. GLASS.

FOLENG MACHiNE.

APPLlcmoN mw ocr. 12. 19m.

1,270,753. PatentedJmw 25, 1918.

4 SHEETS A-SHEU 3.

P. R. GLASS.

FOLDING MACHINE.

APPLICATION mii) ocr. 12` 15312,

lzltvufml Jum 25, 191B;

i fende @www UNITED STATES PATENT oEE'IoE.

PERLEY B. GLASS, 0F BBOOKLINE, MASSACHUSETTS, ASSIGNOR TO P. R. GLASS O0M- PANT, 0F BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

FOLDING-MACHINE.

Specication of Letters Patent.

Patented June 25, 1918.

Application led October 12, 1912. Serial No. 725,381.

facture it is customary thus to fold theexposed edges of the Finished shoe so as to prevent exposing a raw edge. In such case the edge to be folded is usually `beveled or skived so that the thickness et the'fold when the folding or the turning operation is complete is ,practically the same es the thickness of the body of the sheet?` The skived edge is covered with cement so that, when it is subsequently folded over and pressed, it is permanently secured, in place.

The object4 of the invention is to present a machine for doing this class of Work in which the edge is folded or turned a. little at e time und progressively and in which the fold may lie smoothly at any curved,portions of said edge.y

The nature of the invention'will appear more fully in the accompanying description und drawings '.tnd will be defined in the appended claims.

The drawings illustrate a. machine to carry into eiect the objects of the invention, the said machine embodying the principles thereof and being the best means at present known for that purpose. It is to be understood, however, that the particular construction illustruted is lnerely illustrative of the invention and is notrexheustive.

In the idrawingsx Figui-e1 is a front elevation of the ma.- chine.

Fig. 2 is an isometric view looking down on the central portion of the work plate and showing the instrumentelities for operating on the material.

Fig. 3 is .u rear elevation of the parts shown in Fig. 2. I

Fig. 4 is an isometrlc view of the upper portion of the machine frame with the work plate removed and showing a number of the instrumentalities and connections.

Fig. 5 is un isometric detail of thesupporting guide for the folding finger.

Fig. (i is un isometric detail of the folding I finger and its operative connections.

Fig. 7 is :in isometric detail of the fold presser and its operative connections.

Fig. 8 is an isometric detail teken et right angles to Fig. 7 and showing only the upper parts shown in said ligure.

Fig. 9 is an isometric detail from underneath the machine showing the knee lever and connections mechanism. i

Fig. 10 is a side elevation partially in cross-section of the feeding mechanism.

Fig. 11 is an isometric detail of the snipper knife and its operative connections.

Fig. 12 is :in isometric view of the central portion of the work plate and parts support/ed thereubout showing the stock or material in position and about to be actedon by the snipper.

Fig. 13 is an isometric detail showing the stock held by the complemental pressing members after folding.

Fig. 11i represents e shoe vem i with the inner edge folded :1s by n machine of this invention.

Fig. 15 represents the rear portion of a. shoe upper with its edge folded as by a machine of this invention.

to extend to the snipper Fig. 16 is u. detail perspectiveon an enlocked to the base in front by a. nut 5 threaded on a shaft 6 having a bell-andsocket connection 7 with the bese and extending between lugs 8 projecting from' the said casing 3. This enables the casing to be tipped back exposin the interior parts to view und enabling em to be cleaned endv any adjiistpietyt 'ereof readily to be made..

' y Source of power.

, snipper friction member 14 fastthereon.

terminates on its top with the flat surfaces Y) as shown in Fig. 4 and a circular Work plate shown in Fig. 1 is secured in place on top of these flat surfaces by screws extending into the threaded holes 11.

The casingf is provided with bearings in which is moutited the main shaft12 which is provided with a hand wheel 13 and a Suitable pulleys 15 and .16 are loosely mounted on said shaft, and when brought into fric tional contact with the friction lmember 14 rotate the said The casing 3 The alleys are clutched to the friction member y memos of a lever 17 fulcrumed at 18 on the base plate 1, and which may be connected to the usual foot treadle not shown, so that upon l'oekiiig .the said lever the clutching operation is effected.

A yielding work support 19 is provided to ald in the support of the stock when required adjacent the folding mechanism.

ce folding mechanism in the preferred form illustrated comprises several elements which by their cooperative action turn or told the edge of the stock little by little progressively and set the fold. These instrumentalities. omitting for the present the mechanism and the guiding mechanism, which will be considered later, comprise first, means to define and initiate the 'l old throu hout a small section of the edge,

1 I.and secon means to complete and set the fold.

The-means for defining and fold as herein illustrated c prises a fol guide or creaser 20 and a fo ding finger 21 (see Fig. 6), the fold guide holding the stock and defining the line about which the edge is turned by the folding finger. The means for completing and setting the fold comprises a pressin block 22 on which the stock rests and the old presser 23 which cornpletes the turning of the edge and then clamps the folded edge Ato the block 22, comleting the fold which is` thereby set, and y an increased pressure subsequently given to said complemental members.

initiating the The work support 19 in its normal upper position has its surface level with the surface of the work plate 10, and is slightly beveled offjn front and at the left to enable the stock to ride easily into lace. The extremity or edge of the fol guide or Vcreaser 20 normally stands above the edge 24, and that portion of the stock projecting beyond or to the right of this edge is folded backon a line defined by the fold guide. This work support is mounted to yield vertically to aid in taking care of the passage of stays or thickened portions through the machine, and it is also given anup and down movement to bring it into position,

Shaft ,from any suitable.

the top. The forwardly rejecting end 28 of the lever 25 extends t rough to the ex- 76 terior of the frame within reach of the opelator. The shaft 26 has clamped thereon by means of the split collar 29 a frame 30, the forward portion yill of which'prmects beneath a lug on the lever 28and is providedwith a vertically adjustable stop screw 32, while the rear ortion 33 of this frame projects beneath a ug on the rear arm of the lever 25 and carries a vertical bearing 34 in ed 'a vertically yielding pin 35. The ShaftI 26 has also clamped thereto a crank arm 36 connected by a link 37 with a forward end of a forked arm 38 pivoted on a 'shaft 39 secured in the rear of the casing parallel 90 with the main shaft 12. This forked arm 38 s ans an eccentric 40 carried by the main sha. t. The'forked arm 38 is shown as provided with a ib 41 vertically adjustable by means of t e set screws wear and revent lost motion.

1t will tlius be seen that from the rotation of the-main shaft 12 the eccentric 40 rock- 'mg the forked arm 38 will transmit its mo tion throu h the shaft 26, t e frame and the lever 25, to the work support 19, moving it into upper and lower position at the 4required times. Whenever it is vdesired to depress the work support by hand the operator raises the for 105 e stock passes topl of above and Slig tly back of the edge- 24 o the work support, so l e edge that when tht` stock is turned back of the fold guide will fit within the crease 120 and dene the line of fold. This fold guide is also mounted to yield to allow the insertion of the stock between it and the work support, and to allow the passage of stays or unusual vertically and in a direction away from the line of afold. In the construe tion shown this fold guide is curved to the left to allow for the width of the folded edge, and presents a vertical forward arm of the 80 which is mount- 42, to take up link 3T, the arm 36, the 100 vewhenever a' 110 which, as shown at' 20, 115

thicknesses and for this purpose 12:12 i it yields both shank 43 mounted to slide IIO in a head 44 pivotally secured at 45 in a. short overhanging 4arm 46 secured to the work plate 10. A set screw 47 passes through the overhanging arm 46 and abuts against the lopver end of the head 44, while a spring pressed pin 48 mounted in a chamhcred upper portion 49 of the arm 46 abuts against the upper end of the head 44. A spring pressed pin 50 is mounted in a chambex-ed lug 51 forming a part of the head 44 and rests against the top of the curved pol'- tion of the fold guide, thus holding it yieldingly downward. A lever having a finger piece 53 is fulcrumed on the pivot 45, and has one end 54 normally resting on a seat Iin the head 44 and beneath a set screw 55 located in a rectangular projection from the shank 43. The spring pressed pin 50 normally holds the fold guide 20 in its lowermost position with the lever 52 in engagement with the end of the set screw 55, so that by adjusting the set screw 55 the limit of the lowermost position of the fold guide may be adjusted.

In order to insert the stock or to allow the passage of a stay or other unusual thickness, the operator depressesl the lever 52 by pressing on the linger piece 53, thus first elevating the fold guide 20 against the action of the spring pressed pin 50 and then rocking the fold guide 20 away from the line of fold about thc pivot 45 against the action of the spring pressed pin 48. These spring pressed pins may be adjusted by the set screws shown to give any required amount of pressure, and owing to the curved shape of the edge ot the fold guide te fold guide itself will lyield automaticall at the re.- quired times and under the particular con` ditions existing.

The edge of"` the stock is given its initial fold when held in position by the fold guide by means of the folding finger 21, which is provided with a rounded edge facing the edge of the guide 20, and is of such width that but a small section of the length of the edge is turned over at onetime.

This folding finger is, in the construction shown, given a movement back and forth close to the edge of the guide 20, and slightly inclined with respect to the plane of the work plate,` so that in its initial fold the edge is turned back to considerably more than. 9() degrees. A

The folding linger maybe given this movement by the means herein illustrated. In this form a supporting guide block 56 is secured by set screws 57 to a projecting por tion 58 of the casing or frame 3. The shank 59 of the folding finger 21 is mounted to slide in a way o1" recess 60 formed in the face of the guide 56, and so located that as the shank 59 moves therein the folding tinger 21 Will be carried past and close to. the edgeof the guide 0.0 in an inclined direction. The shank 59 is held in place by a plate not shown secured to the guide 56 by screws not shown entering the holes 61.

Rectilinear movement is imparted to the folding finger by connections to a forked arm 62 pivotally mounted on the shaft 39 and engaging an eccentric 63 of suitable form mounted on the shaft 1'2. Suitabli` connections extend from the arm 62 to the folding finger 21 to allow of the required movement takin place and, as shown, comv prise aU-shape link 64 pivoted at 65 to a lug 66 formed on the shank 59; an H-shaped link 67 pivoted in turn to the link 64 at its upper end; and a pin 68 secured to the upper forward end of the arm 62 and pivoted to the lower end of the H-shaped link 67. It will thus be seen that upon rotation of the shaft 12 the arm 62 will be rocked and through the connections described will reci procate the folding finger 21 past and close to the edge of the guide 2() in an inclined direction, thus initiating the fold and turns ing the edge back considerably more than 90 degrees about the fold guide 20.

The next step is to complete and set the fold and to feed the stock forward. In this machine both of these functions are performed by the same elements. The fold presser 23 moves down completing the turning of the fold and clamping the folded edge against the pressing block; then these complemontal members gripping thc stock move rearwardly, feeding the goods along. The clamping action at first is onlyT sufficient to complete the fold and hold the stock for feeding. The heavy pressure does not come until after the feed has progressed to such an extent as to prevent any stretching of the stock which would take place if heavy pressure were given close up to the folding instrumentalties already described.

The pressing block is vertically rigid, but the coperating fold presser is under spring pressure which allows it automatically to take care of any variation in the thickness in the stock and to yield in passing over stays or seams. The pressing block 22 is formed as a part of the slide 69 (see Fig. 4) which slides back and forth in the ways 70 formed in the top of the casing or frame The fold presser ,23 is pivoted at 71 in a bearing plate 7 2 secured to the under side of the Slide 69 (as shown in Fig. 7), so that it travels back and forth with the slide in unison with the pressing block. The fold presser is swung about its pivot to move over, complete the fold and clamp the folded edge upon the pressing block by suitable means such as hereinillustrated. A lever 73 is fulcrumed on the pivot pin 71 and carries in one arm a screw 74 abutting against the depending shank 75 of the fold presser, while a spring 76 connects the said shank to the Said lever arm. The opposite arm of the lever 73 has a. universal connection with a forked erin 77 plvoted on the shaft 39 and engaging an eccentric 78 of suitable form carried y the shaft 12. The universal connections referred to comprise as herein illustrated e. swivel link 79 pivoted at its upper end to a block 80 ivoted on the lever 73 Aand at its lower en to a pin 81 secured in and rejectingl from the arm 77. It will thus e seen t at when the shaft 12 is operated the arm 7 7 will be rocked and through the connections described will rock the fold presser on its pivot causing it to complete the fold and c amp it against the pressing block, the spring 7 6 allowing the fold presser to yield suicientl to take care of seams, stays or varying t icknesses of stock. The eccentric 78 isso shaped that after the fold presser and pressing block are clamped and begin to feed backwardly, increased pressure is applied, setting and securing the fold without danger of stretching the stock.

The feed of the stock secured by movement of the slide 69 upon 'which the pressing block and the fold presser are both mounted. When the foldn operation takes place this slide is in its orward position with the pressing block close to the work support. and thereafter it is moved rearwardly to an adjustable and required extent by suitable mechanism which may be ad justed while the machine is in oeration, thus allowing the feed to be varie by the operator as required. In going around curves the feed 1s lessened according to the degree of curvature, while on straight portions it is lengthened to increase the ra idity of the operation. The limits of the i'eed may also be adjustebly fixed so that as the feed is being varied during the operation of the machine it will not pass outside of these limits.

A suitable mechanism for this purpose is illustrated. It comprises a forked arm 82 (see Fig. 10) pivoted on the shaft 39 and engagin a cam 83 of suitable shape carriedy by the s aft 12. v

A bell crank lever 84 is fulcrumed at 85 to the casing or frame 3. One arm of the bell crank lever 84 carries a stud 86 on which is journaled a block 87 sliding vertically between depending projections 88 of a plate 89 adjustably secured by the set screw 90 longitudinally of the slide 69.

The other arm of the bell crank lever 84 is connected by a link 91 to the arm 82. This connection at the lower end of the link 91 is an adjustable one, the arm 82 havin a. curvilinear slot 92 for that purose', 1n which rides a stud 93 projecting rom the lower end of the link. Smitablev means are rovided for adjusting the stud 93 longitu inall of the s ot 92 to secure the results alrea y pointed out.

For the above purpose a bell critnk lever is fulcrl ed at 94 and has a forked arm 95 roj tin upwardly and engaging the stu 93, whi e its other arm 96 rojects out through a slot97-at the front oi) the casing or frame. The up fer and lower movement of the arm 96 is a justably limited by pins 98 inserted in holes in the flange 99 at the front of the casing.

It is desirable to adjust the length of the feed during the operation of the machine as already explained, and for that purpose mechanism is rovided by which the bell crank lever 9 -96 ma be shifted by a treadle connection 100. his connection 100 is secured to a lever 101 fulcrumed at 102 to the base plate and engaging at its forwurd end the arm 96 of the bell crank lever. It is desirable that this connection shall be detachable in order that the casing 3 may be readily swung back on its pivots 4. For that purpose a sleeve 103 is mounted on the arm 96 and has a lug 104 projecting beneath the lever 101. A s ring 105 normally projects the lug 104 eneath the lever 101, but allows the sleeve to be drawn outwardly releasing the lever when desired. It will thus be seen that the feed slide 69 may by the adjusting Screw 90 be set at the desired position longitudinally and then that upon the operation of the shaft 12 the slide 69 will be given a backward and forward reciprocation by means of the mechanism described; that b means of the pins 98 the forward and bac ward limit of this movement may be lined as desired; and that by means of the treadle connection 100 this feeding movement may be varied at will while the machine is in operation.

Suitable means are provided for guiding the stock into position between the folding instrumentalities, and for that purpose there is herein provided a fixed gage 106 (see Fig. 2) and a co erating yielding presser gage 107. The xed ga e 106 is ongitudinally adjustably secured y means of the set screw 108 in the work, plate 10. The yielding resser ga e 107 is formed on the end of a ever 109 ulcrumed at 110 on the U-shaped projection 111 from the side of the overhanging arm 46 above the work plate 10. A leaf spring 112 secured to the projection 111 rests upon the lever 109 and yieldingly holds the presser gage 107 downwardly, its downward movement being limited by contact with the shoulder 113 on the fixed gage (as shown in Fig. 12). :The exterior of the fixed gage is curved from the shoulder 113 downwardly to the base, and the under surface of the yieldin preer ga e is correspondingly curved an also curv upwardly. When the yielding lgage .rests upon the shoulder the stock is pushed u over this curve until'its edge contacts wit the yielding gage, thus present ing the stock partially curved and gaging ivan a fixed the amount to be folded. Variations in the width of the fold thus gaged are secured b substituting fixed gage members 106 of di ferent dimensions. "The ielding presser gage yields or is moved by the operator when stays, seams or other obstructions come along.

lVhen the edge is being turned or folded about a curve, especially about :i concaved curve. it is necessary to slit or snip that portion of the edge folded over, and for that purpose the machine is provided with snipping means which are thrown into action preferably by the knee of the operator `whenever necessary.

The snipping mechanism, as herein shown, comprises a movable snipper knife 114 and coperating. blade which is here formed at the back of the fixed gage 106, so that as thesnipper knife 114 moves against and past the back of the gage 106 it snips or shears through the edge of the stock. The movement of the snippcr knife is secured by suitable mechanism from the main shaft 12. In the construction illustrated the snipper knife '1l-1 is adjustably mounted by the set screw 115 in a snippet' arm 116 swinging in the slot 117 of the guide 56 and fulcrumed on the pin 118.l It projects up through the slot in the projection 111 of the overhanging arm. An arm 119 projects to the left from and is connected with the arm 116 and carries at its end a ball head 120, so that when this arm 120 is rocked up and down the snipper knife will be swung back and forth against the back of the gage 106. A spring pressed pin 121 adjustably secured by the set screw 122 in the top flange of the casing presses against the arm 119, and an adjustable screw 123 carried by an upward projection from the arm 116 engages the casing of the spring pressed pin 121 to limit the movement of the snipper knife. A frame 121 is mounted to slide vertically in the casing 3 and is apertured at its upper end to allow the-arm 119 to pass therethrough. The frame carries a sleeve 125 sliding in the upper flange of the casing 3 and this sleeve contains a vertically 4adjustable pin 120 adapted to engage the top of the hall 120. Another pin 127 slides loosely vertically in the frame 124 and when in its uppermost position engages the bottom of the ball 120. A cam slide 128 is mounted to slide horizontally in Ways in the frame 124 and is cam shaped on its upper surface to engage a stud 129 projecting from the pin 127. The frame 124 is provided at its lower end with horizontal projections 130 between which an eccentric 131 secured ,to the main shaft 12 operates. It will thus be seen that when the slide 128 is pulled to the rc'ar it Will engage the stud 123. raise the pin. 127 into Contact with the ball' 120, so thatthe ball will be held between the pin 127 and the pin 126, and then upon the rotation of the main shaft the frame 124 Will be given a vertical reciprocation rocking the snippet knife.

The slide 128 is moved back and forth as required to secure the operation or cessation of operations of the snipper knife by connections with a knee lever 132 (see Fig. 9). In the construction shown this knee lever 132 is fulcrumed on the pin 133 011 a plate 134 which may be secured to the bottom of the work table. Screw pins 135 limit the movement of the lever. A link 136 extends from the knee lever to the shorter arm of a bell crank lever 137, the longer arm of which is in turn connected by. a vertical link 138 with one arm of a bell crank lever 139 (see Fig. 1), the upper arm of which is pivoted at 140 to the rear end of the slide 128. A

spring 141 extending from the shorter arm of the bell crank lever 137 to a pin on the base plate 134. tends to maintain the parts in such position as to maintain the shipper knife out of operative connection with the driving shaft, so that movement of the knee lever 132 is necessary to throw it into operative connection. V

The snipper knife is held closely up against the back of the gage by means of a Vhardened block 1412K (shown in Fig. 2) adjustably secured in the ov'erhanging arm 46 and by means of the longitudinal adjustment of the gage 106.

he general operation of the machine will be apparent. from the foregoing description. It will be seen that in the construction illustrated the operator with one foot controls the clutch for stopping and starting the machine, with the other foot controls the length of the feed, and with his knee throws into and out of operation the snippet' knife. The parts p1' jecting above the work plate are small. @he overhanging arm 46 is of small cross-section and the work may pass fri-ely beneath the projection 111, so that Vamps and other parts having a small opening may readily be manipulated to have the edge inturned.

When the edge is folded around an inside or concave curve. as illustrated in Fig. 14, it is dcsirablc'and usually necessary to snip the folded edge producing the effect shown in the figure referred to.

The operation of folding an edge about a, convex 'or outside curvo. particularly when this curve is sharp, is an extremely difficult one. Such work is customarily performed by hand. the operator plaiting the edge into small folds. An important fcav'ture of this invention is that it enables this classof work to he done rapidly and ctt cicntly by machine. This class of work is illustrated in lfig. 15 which showslhe heel portion of an upper with the edge folded guide or creaser 20, and at the same time the fold presser 23 rises, releasing the work from between the fold presser 23 andthe pressing block 22, but leaving the edge cemented down. Thus the work is free to turn about the edge or toe of the fold; guide or creaser 20, thus enabling the edge to be turned on a very sharp convex or outside curve. With the work thus held clamped between the yielding work support 19 and the fold guide or creaser 20, and the folded edge cemented down to the body of the work, at a distance rearwardly equal to the length of feed, the folding finger 21 moves up on an incline in the plane of and across the toe or edge of the fold guide or' creaser 20 and turns the edge of the work thereover, forming a pucker or buckle in this edge between where it is cemented down y to the bod of the work and where itis held between tfie fold guide or creaser 2() and the folding finger 21, the yielding work support 19 having been depressed during the upward movement of the folding finger 21. During this turning of the edge by the folding finger 21 the fold presser 23 and pressing block 22 have moved forward close up to the folding finger 21, andthe fold presser has started on its downward or clamping movement, and while the work l is held between the fold guide or creaser 20 and the folding finger 21, the fold presser 23 comes down directly over the pocker formed in the edge and presses it down upon the pressing block 22, so that the pucker lies f'n a plait over toward the previously folded portion of the edge. While the fold presser 23 is 'coming down thus to clamp the edge the foldin finger 21 begins to be retracted. When t e fold presser 23 has clamped the puckered edge against the pressmg block 22 and the folding fin er 21 is retracted clear of the fold gui e or creaser 20 so as to release vthe work the feed takes i 'plac'eb the movement of the fold resser 23 'an pressing block 22 rearward y and' the operation proceeds y' as be-`v` fore. l

The machinefof the present application in some ofitsaspects is an improvement'upon the machine of my Patent No. 1,224,529; and ,certain features, which are shown and described in the present application, are claimed in the atent. i

Having fully escribed my invention, what I claim as new and desire to secure by Letters Patent is:

1. A machine of the character described the edge of apiece of material, a pressing! block and a fold presser between which the' fold is completed, means for bodily moving the pressin block and fold presser to feed the materia and means for increasing the pressure of the fold presser upon the pressing block during the feeding movement. 3L, A machine of the character described comprising a work table, a fold guide or creaser mounted above the work table with its edge-in the line of feed of the material, a folding finger supported beneath the `work table and recprocable across the edge of the fold ide in a direction inclined to said edge, an means for reciprocating said folding linger to turn the edge more than ninet degrees about the fold'guide. i

4. A machine of the character described comprising a work'table and fold guide or creaser supported above the work table, a folding finger coperating with the fold guide or creaser to initiate the fold, mounted and operated from beneath the work table, means for completing and setting chey fold4 mounted and operated from beneath the work table, and means for snipping the edge prior to folding mounted and operated from beneath the work table.

5. A machine for pro ssively folding the margin of a iece of s eet material having presaing mecx anism and folding mechanism in combination with a gage having a curved face, a pivoted presser'located above said gage and a spring for holding said presser and gage in contact.

6. A machine of the character described comprising a folding guide or creaser, a

"folding 'finger andv means for'moving the folding finger across the edge of thejold ide and 1n the vertical plane thereo'ffto initiate thefold, andmeans for supporting the creaser above the material to allow the creaserto ield vertically and laterally and maintain t 'e same width of-fold in crossing seams and other obstructionsff 1. A machine of the character described comprising a work table, asu'pporting arm" projecting therefrom; a yfold 'guide-'or c'reaser mounted'on said supporting arm toy `yield vertically and laterally, a foldih finger and means for moving the folding nger across the ed e of the fold guide to initiate the fold, a fixe gage having a curved face to guide the edge of the material to the fold guide and folding finger,and a yieldingly mounted presser gage coperating with said fixed gage and having its face conforming to the face of the fixed gage.

8. A machine of the character described comprising a fixed gage, a coperating yieldingly mounted presser gage, dig/adjacent l faces of said gages conforming and coperatin to guide and turn the edge ofV the materia a Work support mounted to yield vertically, a fold guide or creuser supported above the work support and mounted to yield vertically and laterally, a folding finger, and means for movin the folding finger across the edge of the fold guide to turn the 9. A machine of the character described comprising a fixed gage, a coperating yieldingly mounted presser gage, the ad]acent faces of said gages conforming and coperating to guide and turn the edge of the material, a Work support mounted to yield vertically, a fold guide or creaser supported above the work support and mounted to yield vertically and laterally, a folding finger, and means for movin the folding finger across the edge of the old guide to turn the edge of the material, a pressing block, alnid a yielding fold presser coperating with md pressing block to complete and set the 10. A machine of the character described comprising a fixed gage, a coperating yieldingly mounted presser gage, the ad]accnt faces of said gages conforming and coperating to guide and turn the edge of the rnaterial, a work support mounted to yield vertically, a fold guide or creaser supported above the work support and mounted to yield vertically and laterally, a folding iinger, and means for moving the folding lin ger across the edge of the fold guide to turn the edge of the material, a pressing block, a yielding fold presser coperating with said pressing Ablock to complete and set the fold, and means for bodily moving the pressing block and fold presser to feed the material.

'11. A machine of the character described comprising a fixed gage, a coperating yieldingly mounted presser gage, the adjacent faces of said gages conforming and coperating to guide and turn the edge of the ma! terial, a work support4 mounted to yield vertically, a fold guide or creuser supported above the work support and mounted to yield vertically and laterally, a. folding finger, and means for moving the folding 'finger across the edge of the fold guide to turn the edge of the material, a pressing block, a yielding fold presser coperating with said pressing block to complete and set thc fold, means for lbodily moving thc pressf' ing block and fold presser to feed the material, and means for increasing the pres sure between said pressing block and fold presser during said feeding movement.

12. A machine of the character described comprising a fold ide or creaser, a folding linger and means or reciprocating it across the fold guide or creuser to turn the edge of the Work thereover, means for causin the fold ide or creaser and the folding nger yieldingly to hold the turned edge, a pressing block and coperating fold presser and means for causing the Vsaid ressng block and fold presser to act upon t e turned edge between the point where it is held by the fold guide or creaser and tbe'folding finger and Where it has been reviously cemented down upon the body o the work, thus setting a Packer or plait in the edge and permitting the folding of the edge about a com vex or outside curve.

13. A machine of the character described comprising a fold guide or creaser, a folding finger and means for reciprocating it across the foid guide or creaser to turn the edge of the work thereover, means for causing the fold iide or creaser and the folding finger yieldmgly to hold the turned edge, and means acting upon the turned edge between the point where it is held b v the fold guide or creaser and the folding finger and where it has been previously cemented down upon the bod of the work to complete the turning of t e edge, to seta pucker or plait therein, and thus permit the folding of the edge about a convex or outside curve.

14. A machine of the character described comprising a fold guide or creaser, a folding finger, means for moving the finger rclatively to the creaser to turn the edge of the work thereover and hold the Work yield i n alv, and means acting between the' point obere the work is thus held and the point whore the edge has been previously cemented doe-n to complete the turning of the edge and to press theedge upon the body of the wor-lr.`

15, A machine of the character described comprising a Work table, a fold guidil or creaser mounted above the Work table with its edge in the line of feed of the material, a folding finger supported beneath thc work table and reciprocable across the' edge of the fold guide in a direction inclined lo said edge, means for reciprocating said folding finger to turn the edge more than ninety degrees about the fold guide, means for feeding the material and means for varying tbc rate of feed .during the operation ol the machine.

16. A machine of the character described having, in combination, a Work table, a folder and a creaser located opposittx each other and both held from movement in the direction of feed of the Work, said folderf; being supported beneath the table and we' lid `ereaser mounted above the work ta le with its edge in the line of feed of the material, a foldin finger supported beneath the Work table and reciprocable in a straight line path across the edge ofthe fold guide and 1n a direction inclined to the plane of said table, and means for reciprocating" said folding finger. i

18. A machine for progressively `folding the margin of a piece of s ing, in combination', a work table, an arm projecting over said table, a creasercarried by sai arm, a presser, a folder and a knife extending u through said table, and mechanism .Locate beneath said table for actuating said knife, folder and presser.

19. A machine for progressively folding the margin of apiece of sheet material having, in combination, means for intermittently feeding a piece of material into position to have its margin folded, a creaser for defining the line of fold, a folder arranged to bend the margin of the material about the edge of the ereaser, a presser for completing and pressing the fold, a work support located beneath the creaser,`and means for intermittently raising said,work supper-ttoA grip the material between 1t and said creuser.

y20. A4 machine for progressively folding and plaiting the convexl curved margin of a piece of sheet material having, in combination, means for feeding a plete of leather intermittently into position to have its margin folded, a member to press upon the leather and thereby determine the line of fold, a movable folder opposite said member and arran ed to coperate therewith to initiate the fo d, and a hammer located close-to and beside the folder whereby in a convexly curved margin a pucker is formed by the folder beneath the hammer, -in position to be engaged by said hammer when said-hamer is brought down. l 4 Y *21.* A. machine of theeharacter described having, in combination, a work table, a folder and acreaser. locatedopposite each other and both heldfrom movement in the direction of feed of the work, said foldei-` bei ng supportedbeneath the table andreciproca le across the edge ofthe fld. vguide in a direction inclined" thereto, meansfor 17e ciproeating said folder to turn'the edge more `than ninety degrees about the fold guide,- means forfeeding the-'work, and means for va, ying the rate of feed dlring the operation o "the machine.

`22. A nnmliiiie of th'class descri ed oomprising a fixed gage having a eur opereet material hav `rial in the form o ative face, said ga e being provided with a shoulder, a pivoted presser gage having an operativey face curved to correspond to the curvature-of said fixed gage, and a spring for holdin saidi presser gage down upon Said ahoul er. .23. A machine for pro ressively folding and pressing the margin o a piee of flexible material, having, in combination, a support `fl".\l"fl5lle material, means for forming the fold, combined pressing and feeding mecha nsm se arate `from the folding means, and means or causin said mechanism rat to press the fold an then to feed4 the material.

24. A machine for progressively folding and pressing the margin of a piene of flea--` ible maten having' m combination, a' etai tional-y ereaser, a folder recprocable'inian inclined path to coperate with the creaser informing the fold, 4a presser for pressing the fold, and means for moving the presser in a ,direction transverse to its preamp; miwement to feed the material.

25. n a folding `rmmchine a gaie having an upward] ourved fue@ and a co perating gage exten ing over said first;married'i age whereby the width of the margin whle l to be folded over on the body of the wirk is determined. a

26. A maehne for progressively foldin and planing the oonvexly curved margin o flexible material comprising means engaging said flexible material to feed it, astat tionary member shaped to cause the margin of the material as 'said material is fed past it to be bent upwardly with the edge of said material uppermost, a movable liner acting upon the margin so bent to orm an upstanding pucker therein and a presser act ing to swing the bent margin with its upstandin pucker down upon the body of the materiali.

27. A machine for progressively folding and plaiting the eonvexly curved mar 'n of flexible material, comprising eansA or curvinV upwardly the margin of the material with res eet to the body thereof, movable means or forming a pucker in said upwardly curved margin, said upwardly curved puckered margin ,being unsupported and out of contact with the body of the material, and means for contacting with said puoker in said upwardly curved margin and pressing it down upon the body of ythe matea plait. v 28. A machin for progressively folding and plaiting thel convexly curved margin of apiece of flexible material comprising a stationary member with .a curved face or partially curving the margin, a fold presser and a device movable up and down in a path at right angles to the I ineof fold and actingl i to form a pueker in the partially curved margin.

. 29. A. machine of the class described having, in combination, a folder l'or partially forming the fold` mechanism for feeding the stock intermittently past the folder, mecha nism for completing and pressing the fold, and means for operating said feed and press ing mechanisms, .said means comprising a shaft, a plurality7 of levers` pivoted about said shaft, an operating shaft,'a plurality of rams on said last named shaft'` arranged to oseillate said levers, and means for rotating` said operatingr shaft.

30. A machine of the Class described having. in combination, a` tabl@ for supporting the stock, in aus for ,forming the fold, stock feeding mechanism, pressing mechanism, and meansl for operating said mechanisms, said means including a plurality of parallel shafts located beneath said table, one of said shafts being a pivot shaft and the other an operating shaft, fams on said operating shaft, a plurality of levers supported at` a point near one end on the pivot shaft and at a point spared from said end by said cams, and means for rotating said operating shaft.

31. A inaehine of the class described, having, in combination, a table for supporting a piece of stock, feeding means, a stationary member arranged to turn up the, margin of the stoek fed past it, a presser arranged to act upon the margin after the action of the stationary member, and means for operating said feeding means and presser, said operating means including two parallel shafts located beneath said table, a plurality ofY levers connected with said shafts, means for rotating one of said Shafts, and cams mounted on said rotating shaft and adapted when said shaft is rotated to oseillate said levers about the axis of the other shaft.

39.. A. machine for progressively folding the margin of a piece of flexible material comprising a stationary member pastr which the material is fed to curve upwardly the margin of said material, a knife to snip said upwardly curved margin, means for vibrating said knife in a path located entirely above the plane of the, body of the material, and a reciprocating presser, said knife being located between said. stationary member and said presser.

33. A machine of the class described, having in combination, means for feeding a piece of flexible material into position to have its margin operated upon, a stationary member having` a curved face for bending upwardly said margin, a knife located in the rear of said member and adapted to snip the bent-up margin, means for vibrating said knife in a path located entirely above the plane of the body of lhe material` and a reciprocating presser located in the rear of said snipping knife.

Pil. machine for progressively folding the eonvexly curved marginof a piece of flexible material comprising means engaging said material to feed it, a stationary member for turning up the margin of the material into a position in which the edge is uppermost, a movable member for turning the margin farther in the. same dileetion and at` the same time forming an upstauding put-ker in the margin` and means acting subsequently to lay the upstanding pucker upon the body of the material in the form of a plait.

35. A machine of the classi described having, in combination, a table to support` the stock, feed mechanism, snippiug mechanism and pressing mechanism arranged to act upon the stock so supported, an operating shaft` located beneath said table, cams on said shaft, connections from said cams respectively to said feed mechanism, said Snipping mechanism, and said pressing mechanism, and means for rotating said operating shaft.

36. A machine for progressively folding the margin of a piece of flexible material, comprising a stationary member past which the material is fed to curve upwardly the margin of said material, a knife to snip the upwardly curved margin, means for vibrating said knife in a path approximately parallel to the plane of the body of the material, and a reciprocating fold presser, said knife being located between said stationary member and said presser.

37. A machine for progressively folding the margin of a piece of flexible material, comprising a stationary member having an upwardly carved face past which the. material is fed to curve the margin of the material upwardly into an approximately vertical position, a knife, means for `vibrating; said knife to slit said upwardly curved margin, and a reciprocating fold pi esser, said knife being located between said stationary member and said presser.

In testimony 'whereof l have signed my name to this specification in the presence of two subscribing witnesses.

PERLEY It. GLASS Witnesses:

ALICE (lr. NixoN, FREDERICK S. GREENLEAF.

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