US554839A - Machine for binding edges with sheet metal - Google Patents

Description

(N0 Modl.) 8 Sheets-Sheet 1.

J. SOHREIBER. MACHINE FOR BINDINGEDGES WITHYSHEET METAL.

No. 554,839. Patented Feb. 18, 1896.

ANDREW BERMIAM. PHDTO-UTHQWASNI NGTON. D C

m0 Model.) v 8SheetS-Sheet2 J'.SC'HREIBER MACHINE FOR BINDING EDGES WITH SHEET METAL No. 554.839.- Patented Feb. 18, 1896.

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Patented Feb. 18, 1896.

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J. SCHREIBER.

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v MAGHINE FOR BINDING HDGES WITH SHEET METAL' 4 m0 Model.) I 8 Sheets-Sheet 5.'

J. SCHREIBER.

I MACHINE FOR BINDING EDGES WITH SHEET METAL. No. 554,839., Patentefi'f'eb. 18, 1896 AN DREW BJJRAHANL PHUTO-IJTMQWA5HINGTUIL RC.

(No M l.) 8 Sheets-Sheet 6.

J. SOHREIBER.

V MACHINE FOR BINDING EDGES WITH SHEET METAL. No. 554,839 Patented Feb. 18, 1896.

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J. SCHREIBER. MAOHINE FOR BINDING EDGES WITH SHEET METAL.

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v l Patented F b 1 1,896: imrllm'muw'lmwm NITED STATES- PATENT GFFICE.

JOHN SCHREIBER, OF ST. LOUIS, MISSOURI.

MACHINE FOR BINDING- EKDGES WITH SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 554,839, dated February '18, 1896. Application filed June 24,1895. swim. 553,878. (No model.)

siding in the city of St. Louis, State of Mis souri, have invented a new and useful Machine for Binding Edges with Sheet Metal, of

. which the following is a specification.

My invention relates to a machine for folding thin strips of sheet metal over the edges of paper or cloth calendars, maps, placards,

display-cards and other like articles to preserve the edges and keep the article in shape.

Heretofore the operation of thus binding edges has required several machines, each performing distinct steps in the operation.

It is the object of my invention to provide a machine which will perform the entire op eration automatically and thus economize the time and labor involved.

To this end my invention consists in the machine and in the parts and in the combinations hereinafter described.

In the accompanying drawings, which form part of this specification, Figure 1 is a front elevation of my machine. Fig. 2 is a plan thereof. Fig. 3 is a vertical cross-section on the line 3 3 of Fig. 1. Fig. 4 is a face view of the cam which operates the horizontal plunger. Fig. 5 is a rear view of the cam which operates the upwardly-acting plunger, the operative portion being shown in section. Fig. 6 is an enlarged partial View on the plane of Fig. 3. sheet-metal-feed mechanism. Fig. 8 is a detail showing the operation of the limiting bars or stops. Figs. 9, 10, 11 and 12 are vertical cross-sections on the lines 9 9, 10 10, 11 11, and 12 12, respectively, on Fig. 1, illustrating the simultaneous positions of the several cams which operate from above. Figs. 13, 14, 15, 16, 17, 18, 19 and 20 are detail cross-sections showing the relative positions of the several cutting, clamping, stopping and folding parts as they change in regular succession through a single rotation of the driving-shaft. The

particular phase of the rotation for each of these figures is indicated on Fig. 9 by a dotted line bearing the corresponding numeral, and the particular portion of whatever cam causes each successive change is indicated likewise 011 Figs. 10, 11 and 12. Fig. 21 is aplan, and

Fig. '7 is an end elevation of the Fig. 22 is a vertical cross-section, of the device for feeding, punching and shearing the eyelets; and Figs. 23 and 24 are detail face views or the two parts of the combination-die for punching the eyelets.

The framework 1 of the machine has a main shaft 2, which is connected to any suitable source of poweras, for instance, by a gearwheel 3, fixed thereon, and meshing with a gear-wheel 4, fixed to a pulley 5, driven by an engine. The main shaft 2 carries a number of cams 6, 7, 8, 9, 10, 11, 12 and 13, fixed thereon and connected, as hereinafter described, to the several clamping, cutting and folding parts, supported by the framework 1 and hereinafter described.

The tin or sheet metal to be folded over the edge of the display-card or other article is fed to the machine in sheets 14, preferably by the feeding mechanism hereinafter described. The sheet of metal 14 is laid upon a stationary bed 15 and fed forward until it strikes against limiting-stops 16, vertically movable in holes drilled through the framework 1 and normally held in their highest position by springs 17, which press against shoulders thereon and against the framework 1. The top edge of the bed 15 carries a knife-bar 18 flush therewith, beyond which the metal sheet projects before it strikes the limiting-stops 16. In order to co-operate with the knife-bar 18 on the feed-bed 15 a second knife-bar 19 is fixed to a cross-blade 20, arranged to reciprocate vertically. The two knife-bars thus constitute shears for cutting the sheet metal into strips of the desired width. The cross-bar 20 has vertically-perforated lugs or a shoulder 21 thereon, through which slide bolts 22, pressed downwardly by springs 23, coiled thereon and bearing against said lug 21 and against the enlarged head on said bolt. The lowest position of the bolt is determined by a nut 24,

vadjustably carried thereby and adapted to strike against the lug 21. The enlarged head of the bolt projects downwardly below the blade or knife edge 19 and therefore strikes the sheet metal 14 first, thereby constituting a clamp to hold it against the bed in proper position.

When the upper knife-bar, 19,descends, the

projecting portion of the metal sheet 14 is severed and falls in an inclined position, as shown in Fig. 13, one edge thereof resting in the angle formed by the framework 1 and the limiting-stops 16 and the other side being raised by a plunger or folder 25, which projects from the under side of the bed 15, and is adapted to be reciprocated horizontally by one of the cams on the main shaft 2. Close alongside of the cross-bar 20 are two parallel folders 26 27, connected, respectively, to the cams 7 8, fixed to the main shaft, which cams communicate to them respectively a vertical movement. Alongside of the vertically-movable folder 27 is a vertically-movable clampingplate 28, likewise connected to the cam 9 on the main shaft 2. The clamping-plate 28 is directly above the limiting-stops l6 and in its downward movement it overcomes the resiliency of the springs thereof and depresses said stops. The folders 26 27 are between the knife-bar 19 and the clamping-plate 28. The downwardly-aeting folder 26 is directly above an upwardly-acting folder 29, which is c011- nected and receives its motion from the cam 11 on the main shaft. The folder 27 is directly above a portion. of the fixed framework or bed 1 and is not in position to interfere with the movement of any of the other parts. The lower edge of the horizontal plunger is beveled off and directly below the bevel in its retracted position is a correspondinglybeveled follower 30. This follower 3O slides vertically in a socket provided therefor and is pressed upwardly by a spring or springs 31 in the bottom of the socket, which springs allow the follower to be depressed when the bevel of the horizontal plunger 25 bears against it.

As hereinbefore stated, the several moving parts-that is, the knife-bar 20, the folders 26 27, the clamping-plate 28, the horizontal plunger 25, and the upwardly-acting plunger 29 are actuated respectively by the cams 6 7 S 9 1O 11 fixed on the main shaft 2. The cams are preferably duplicate surface cams or disks arranged in pairs, in the face of each of which is a groove in which rests one end of a bellcrank lever 32 journaled on a shaft or shafts 33. The other end of each lever is connected by a link 34 to its particular knife-bar, folder, or clamp, as the case may be. It is preferable to have a stiff spring 35 intervene somewhere between the lever and the corresponding crossbar in order to avoid undue strain, and in order to insure proper adjustment it is desirable to make the link in two parts threaded right and left and connected by a turnbuckle 36.

The operation of the cams depends of course upon the eccentricity of their grooves. The throw or extent of movement depends upon the degree of eccentricity, while the order of operation of the several parts depends upon the relative. locations of the eccentric portions. By referring to Fig. 9, it willbe noticed that the knifeoperating cam effects only a single up-and-down movement to each rotation of the shaft, as it has only a single eccentric portion. Figs. 10 and 12 show in the same way that the cams for operating the folder 26 and the clamping-plate 28 have two such movements for each rotation, while Fig. 11 shows that the folder 27 reeiprocates three times.

As above stated, the succession of opera tions depends upon the arrangement of the several eccentric portions with reference to their angular distances from a given axial plane. This arrangement will be apparent from a description of the operation in connection with Figs. 9 to 20 of the drawings.

The sheet metal is fed forward until it strikes the limiting-stops 16. Then the machine being set in motion the eccentric portion of the cam 6 is the first to bear against and turn the bell-crank lever. This turning of the lever causes a downward movement of the knife-bar 20. The first portion of this movement causes the spring-clamp 22 to bear against the metal sheet and hold it firmly, and the later movement causes the knife-bar to shear off a strip of sheet metal, which strip falls in an inclined position, with its lower edge resting sidewise against the limiting steps 16. The positions of the several parts at the end of this movement are illustrated in Fig. 13.

In the second movement the shaft has carried the eccentric portions of the knife-operating cam beyond its lever and has simultaneously brought short eccentric portions of the cams which operate the folders 26 and 27 and the clampingplate 28 against their respective lovers. The results are that the knife-bar is returning to its original position, while the folders 26 and 27 and the clampin g-plate 28 are simultaneously brought down to the limit of their strokes. During this movement the follower 30 projects upwardly from its socket and serves as a side piece to box the sheet metal in place, and therefore the metal is bent at right angles. The downward movement of the clamping-plate 28 has depressed the limiting-stops 16, which are automatically held in their depressed position until the end of the operation by a device hereinafter described. Fig. 14 illustrates the relative positions of the several parts at the end of this movement.

The third movement is simply a return of the folders 26 27 and the clamping-plate 28, due to the shaft having carried the eccentric portions of the cams past their lever connections. In this position (illustrated in Fig. 15) the paper or cloth whose edge is to be bound is fed above the limiting-stops from the side opposite the sheetmetal-feed side until its edge lies in the angle of the sheet metal.

The next movement is effected by the cams 8 and 9, which have eccentric portions beginning at the same angular distance from the supposed starting-point, but of different lengths. These cams, therefore, cause a simultaneous downward movement of the folder 27 and of the clamping-plate 28, and almost simultaneously therewith the cam operates the horizontal folder or plunger 25, the follower 3O yielding automatically to the folder or plunger 25. The horizontal folder or plunger further turns the already upturned edge of the sheet metal to an angle of about one hundred and twenty degrees, the several partsat the end of the movement being in the positions shown in Fig. 16.

The next movement is caused by the concentric portion of the cam 10 reaching its le ver and a small protuberance on the cam 7 simultaneously reaching its lever. This movement, therefore, consists of a return of the horizontal folder or plunger and a simultaneous downward stroke of the folder 26 and leaves the metal strip 14 completely doubled on itself, as shown'in Fig. 17. The folder 29 next adjacent to the fixed bed or framework 1 serves during this operation as an anvil for the upper folder, 26.

The next movement is caused by the raised portion of the cam 7 passing its lever and a protuberance on the cam 11 simultaneously reaching its lever. The result is the return of the folder 26 and the simultaneous npstroke of the upwardly-acting folder or plunger 29, causing a second bend of the sheet metal of about ninety degrees, with the paper or cloth clamped therein. Fig. 18 illustrates the positions of the several parts at the end of this movement.

The next movement is due to the normal level of the cam 8 reaching its lever and the simultaneous striking of a protruding portion of the cam 10 against its lever. This last-mentioned eccentric portion of the cam 10 has about double the throw of the firstmentioned eccentric portion thereof, so that its forward movement will bend. over the sheet metal which at the time is out of reach of the shorter stroke of the horizontal folder. As in the previous operation of the horizontal folder, the metal is left at an angle of about one hundred and twenty degrees, as shown in Fig. 19.

The next movement is due to the normal concentric portion of the cam 10 bearing against its lever to return it to its normal position and to the simultaneous striking of a protuberance on the cam 8 to cause a downstroke thereof, completely doubling the sheet metal on itself a second time. The positions of the several parts at the end of this movement are illustrated in Fig. 20.

The last movement is where the normal concentric portions of the cams 8 and 9 strike their levers and cause the return of the folder 27 and the clamping-plate 28 to their normal positions and the simultaneous release of the limiting-stops 16, which immediately rise. At the end of this movement the parts are 1 bar from the stops.

in their normal positions, as illustrated in Fig. 6.

In order better to effect their purposes, the face ends of the folders are hollowed out either at the face or at the side, as shown in Figs. 13 to 20, to accommodate the bindingstrip in the several stages of the operation and to leave it rounded instead of flat.

It was mentioned above that when the limiting-stops 16 were depressed by the clamping-plate 28 they were held in that depressed position until the end of the operation. For this purpose a notch 37 is cut in each stopbar 16, as shown in Fig. 8, in a position to be engaged by a transversely-movable bar 38 when the stop is at the limit of its downward movement. This transverse bar 38 has holes therein through which pass the stops 16, and the bar 38 is supported so as to slide on the framework 1. As shown in Fig. 1, 'one end of the bar 38 is connected by a link 39 to a lever 40, against which a spring 41 bears. The edge of this lever 40 opposite the spring 41 has a cam edge formed by a depression whose end portion is inclined. On the crossbar of the clamping-plate 28 in position to cooperate with the edge of the lever 40 opposite said spring 41 is a pin or roller 42 so arranged that when the clamping-plate 28 depresses the stops 16 the spring 41 may move the lever 40, and thereby force the transverse bar 38 into engagement with the notches 37 in said stops and prevent their rising when the clamping-plate 28 is partially raised. The arrangement is such that when the clampingplate 28 is completely retracted, as it is only at the end of the operation, the pin or roller 42 bears against the incline of the lever and causes the disengagement of the transverse Obviously instead of the cam edge on the lever an inclined slot might be used therein, in which the pin or projection on the clamping-plate would enter to cooperate therewith in both directions, thus avoiding the necessity for an actuatingspring.

A suitable meehanism for feeding the sheet metal is illustrated in Figs. 2, 3, and 7. In this mechanism the motion is communicated by a cam 9 on the main shaft 2 to a lever 43, fixed to a spindle 44 journaled in the framework 1. The end of the spindle 44 has an arm 45 fixed thereto to correspond with the free arm of the lever 43, and these two arms are connected by a cross-bar 46, which lies above the feed-table 15. On this cross-bar are fastened weighted arms 47, which terminate in padded or rubber-faced feet 48, adapted to rest with considerable friction upon the sheet of metal 14. The weighted arms 47 are preferably fastened to a cross-bar 46 by set-screws 49, and the cross-bar is journaled in the arms. Side guide-bars, 50, for the sheet metal are fastened to the bed 15 by means of bolts and nuts working through transvere slots 51 in said bed 15, so that the side guide-bars, 50,

are transversely adjustable. An upright or standard 52 on one or both of said bars furnishes a bearing or bearings for a lover or levers 53, one end of which has a lateral pin or projection 54 adapted to lie under the adj acent weighted arm -l7, while the other end of the lever 53 extends forward and lies in the path of a shoulder 21 on the knife-bar 20. Small sockets are formed in the bed 15, in which spherical friction-balls 55 are inserted the more easily to feed the sheet metal.

The operation of this feed mechanism is as follows: The sheet metal 14:, being laid on the bed 15, is pressed by the weighted arms 47. As the main shaft rotates, the cam 9 oscillates the lever 43, which causes a forward movement of the weighted arms -17, and the friction of the rubber feet thereof upon the sheet metal co-operatin g with the antifrictionballs 55 causes the sheet tin or metal to slide forward till it strikes the limiting-stops 1G. The concentric portion of the cam 9 is arranged to oscillate its lever forward and thereby feed the thin sheet metal just before the downstroke of the knife-bar 20, while the return oscillation of the lever is timed to precede the return of the knife-bar 20, so that the clamp 22 on said knife-bar may hold the sheet metal .in place during the return of the weighted arms 4:7. The downstroke of the knife-bar 2O tilts the levers 53, and thereby lifts the weighted arms 4-7 clear of the sheet metal, and the arms remain out of contact with the sheet metal during their return and until the knife-bar rises. The return of the weighted arms is caused by a strong spring 56, operating on the lever 43, as the lever is shown as co-operating with the edge of the cam 9, instead of with a groove in the surface. This diiferenee between the cams is a mere mechanical detail, as either form may obviouslybe substituted for the other. In the present instance, however, the cam 9 is the edge of the same disk which forms the surfacecam 9.

Obviously, the sheet metal may be fed by rollers 57, geared together by cog-wheels 58 and driven by a spring-pressed pawl 59, connected by a link 60 to the lever 4-3, which link engages a ratchet 61, fastened to one of the rollers 57. Set-screws 62, working against the journal-blocks, furnish a convenient means for regulating the pressure and distance of the rollers.

As illustrated herein, the paper or cloth which is to be edged is fed and removed by hand, though obviously mechanical devices might be used for the purpose. The feed table 63 has a side gage 6-1: thereon for the paper, which gage is transversely adjustable by means of a set-screw (55. Side gages 6G for the sheet metal are suspended from a transverse bar 67, upon which they are adj ustably fastened. The lower ends of the side guides (36 are adapted to hang under the clamping-plate 2S, and the edges thereof are curved and rest against studs or bars (37, provided for the purpose on said clampin g-plate, so that when the clampin g-plate descends the studs will bear the guides out of the path of the clamping'plate 28. The purpose of the guide is to prevent the strip of sheet metal from working sidewise as it falls after being severed from the sheet. The end of the feedbed 63 carries a series of spring-fingers (58, projecting upwardly from below through slots therein. The purpose of these fingers is to keep the paper above the edge of the strip of sheet metal. WVhen the clamping-plate 28 descends, it forces the fingers into sockets 69, provided therefor in the bed or framework.

Figs. 3, 21, and 22 illustrate the mechanism for forming and feeding the eyelets. A roll 7 O of thin brass or other suitable tape is mounted on a reel 71, from which it passes between feed-rollers 72. These feed-rollers are adjustable to regulate the pressure or distance apart like those for feeding the sheet metal and are provided with intermeshing cog-wheels 7 A ratchet 74., fixed to the shaft of one of these cog-wheels, is driven by a pawl 75, carried on a pivotal link 7 (1', whose free end is connected by a link 77 to a lever 78. This lever 78 is normally held in position by a spring 7 9; but it is oscillated by a cam 13, fixed to the main shaft, against the edge of which cam the spring holds the lower arm of said lever 78. This cam has a single eccentric portion so located as to feed the metal tape or eyelet at the time when all of the upper folders and clamping-plates are retracted, after the limiting stops 16 have been depressed, as shown in Fig. 15.

As eyelets are needed only at the upper edge of the display-card, this feed mechanism is adapted to be disengaged from the actuat in g-shaft when the lower edge is being bound. Such disengagement may easily be effected by throwing the pawl 75 out of engagement with the ratchet-wheel 7 t.

From the feed -rollers 72 the metal tape passes through a combination-die, where the eyelets are formed. Each member of this die is partly male and partly female, the upper member, 80, being of the form shown in Fig. 23, while the lower member, 81, is its counterpart, as shown in Fig. 2st. The upper member, 80, is attached to a cross-head S2, journaled on upright rods 83, which are secured to a lever or levers 84E, pivoted to the framework. The free end of this lover or levers is held against a cam 12, fixed to the main shaft 2 by means of a strong spring 85. This cam is arranged to actuate the lever, and thereby operate the punch or die once in each rotation of the shaft and at a time when the metal tape has been fed into position. From the die the tape passes through a suitable guiding-channel 86 into the jaws of the folding mechanism. The upper wall of the channel 86 terminates in a sharp-edged block 87, and eo-operatin g therewith from below is a punch or shear 88. This punch works through a hole in the frame and is connected to and operated by a projecting piece on the upwardlyacti'ng folder or plunger 29, as shown in Fig. 6. On the first upstroke of said plunger, therefore,the already-formed eyelet is severed from the tape on the reel.

It is obvious that numerous changes may be made in the forms, combinations, supports, and adjustments of the several parts, and I do not wish to restrict my claims to the details of construction herein described.

What I claim is- 1. An edge-binding machine comprising a fixed bed, a vertically reciprocating plate above said bed adapted to clamp the edge of the binding-strip and the paper against said fixed bed, a folder above said strip and folders below said strip adapted to operate in predetermined succession on said strip, said upper folder and said plate successively constituting turning edges for the binding-strip, the lower folder next adjacent to said fixed bed being under and constituting an anvil for said upper folder, and the upper and lower folders co-operatin g together to bind said strip on the edge of the paper, substantially as and for the purposes set forth.

2. An edge-binding machine comprising a clamping device, two downwardly-actin g folders, a horizontally-acting folder and an upwardly-acting folder, arranged with their edges parallel to co-operate in predetermined succession upon the binding-strip substantially as and for the purpose set forth.

3. An edge-binding machine com prising two reciprocating folders arranged side by side, a reciprocating folder arranged opposite one of said first-mentioned folders, and a folder arranged to reciprocate at right angles to said first-mentioned folders, a main shaft and cams thereon connected to said folders by intermediate devices and so'shaped and arranged as to cause the co-operation of said folders in predetermined succession, substantially as and for purpose set forth.

4. An edge-binding machine comprising a shearing device for cutting off a binding-strip, a clamping device, two downwardly-acting folders, a horizontally-acting folder, and an upwardly-acting folder, arranged with their edges parallel to co-operate upon the bindingstrip in predetermined succession, substantially as and for the purpose described.

5. An edge-binding machine comprising a clamping device,two downwardly-actin g folders, a horizontally-acting folder and an upwardly acting folder, arranged with their edges parallel, a main shaft, cams thereon and intermediate devices connecting said cams with the clamping device and folders respect ively, the cams being shaped and arranged to cause the co-operation of said clamping deviceand folders upon the binding-strip in predetermined succession, substantially as and for the purpose set forth.

6. An edge-binding machine comprising a feed-plate having a knife-edge, a verticallyreciprocating knife-bar to co-operate therewith, a vertically reciprocating clampingplate, two vertically-reciprocating folders between said knife-bar and said clamping-plate, a horizontally-reciprocating folder under said feed-plate and whose edge normally lies below said knife-bar, a vertically-reciprocating folder below the folder next to said knife-bar, stops in the frame below said clamping-plate normally held in their elevated positions by springs adapted to yield automatically to the pressure of said clamping-plate, a device for locking said spring-stops in their depressed positions during a predetermined time, a main shaft and cams thereon connected by intermediate devices to said knife-bar, clamping-plate and folders, respectively, the cams being arranged and shaped to cause the cooperation thereof in predetermined succession, substantially as and for purpose set forth.

7. In an edge-binding machine, a mechanism for feeding sheet metal comprising a spindle fixed to a lever and having an arm fixed thereon, a cross-bar journaled in the end of said arm and the corresponding end of said lever, weighted arms on said crossbar, and a cam fixed on the main shaft to co-operate with said lever, levers carried on the feedtable having one end resting under a projecting shoulder of the knife-bar and having a lateral projection on the other end resting under one of said weighted arms, substantially as described.

8. In an edge-binding machine, side guides for the sheet metal consisting of curved hangers fixed to a cross-bar on the upper part ofthe framework and adapted to hang normally under the clamping-plate, a bearing projection on said clamping-plate against which said hangers bear, the bearing-surface of the hangers being curved so that the hanger will be swung out of the path of said clampingplate when it descends, substantially as described.

9. The combination with an edge-binding machine of a mechanism for forming eyelets and feeding them automatically to the folding devices, said mechanism comprising a band-feeding device, a die for punching said band, and a shear for severing the finished eyelet from said band, said shear being located between said die and the folding devices, cams on the driving-shaft of said binding-machine and intermediate connecting devices for connecting said cams and the feeding, the punching and the shearing devices, respectively, whereby said devices are actuated by the driving-shaft of the machine, substantially as and for the purpose set forth.

10. In an edge-binding machine, limitingstops vertically movable in the framework, and having notches in their sides, springs holding said stops normally in an elevated plate, substantially as and for the purpose described.

JOHN SCIIREIBER.

W itnesses:

JAMES A. CARR, JAMES J. ODONOHOE.

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