US474321A - Feed mechanism for punching-machines - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

F. H. HARDMAN. FEED MECHANISM FOR PUNGHING MACHINES.

No. 474,321. Patented May 3, 1892.

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(No Model.) 7 3 Sheets-Sheet 2 F. H. HARDMAN.

FEED MECHANISM FOR PUNGHING MACHINES.

No. 474,321. Patented May 3, 1892 (No Model.) 3 Sheets-Sheet 3. P. H. HARDMAN.

FEED MECHANISM FOR PUNGHING MACHINES.

' No. 474,321. I Patented May 3, 18 92.

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UNITED STATES PATENT OFFICE.

FRED. H. I'IARDMAN, OF BEVERLY, ASSIGNOR TO WVALTER E. BENNETT, OF BOSTON, MASSACHUSETTS.

FEED MECHANISM FOR PUNCHING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 474,321, dated May 3, 1892. Application filed August 21, 1891- Serial No. 403,370. (No model.)

To all whom it may concern: parts shown in the said last three figures con- Be it known that I, FRED. .H. HARDMAN, a stitute important factors in the forward-feed citizen of the United States, residing at Bevmechanism. Fig. is a partial plan and horierly, in the county of Essex and State of Maszontal section of mechanism comprised in the 5 5 sachusetts, have invented new and useful Imline-feed, Fig. 6 being a perspective View of provements in Feed Mechanism forPunchingportions of the same. Fig. 7 is a perspective Machines, of which the following is a specifiview of the blank-punching mechanism, Fig. cation. 8 being a vertical section of the same, taken This invention relates to improvements in in the direction of the forward feed of the pato machines for punching blanks from a sheet per. Fig. 9 is a plan View of a part of the of card or pasteboard or other appropriate sheet of stock material from a portion of which material, which blanks may be utilized for blanks have been punched. whatever purpose required. One special use In the drawings, A represents the support for the blanks is for the formation of the head and carriage for the paper. This carriage A 6 15 in the making of shoe-buttons or other eyeis mounted on suitable supporting and guidshank buttons, as well known. The functions ing parts of the stationary frame for a backof the present machine are to automatically Ward and forward movement in a direction feed the sheet of stock material step by step parallel with the forward edge a, of the sheet in one direction, so that a plurality of blanks .e' of material from which the blanks are to be 20 may be successivelypunched out at one edge punched, and near the forward edge of the portion of the sheet, to then feed the sheet a said frame A are pressure and feed rolls l) and short distance forward in a direction at right cl (1 for confining and imparting the forward angles to the first-mentioned feed to present feed to the paper on the said frame A when a fresh portion of the paper, and to then se- .said rolls are properly actuated.

z 5 cure a return-feed movement of the sheet in The frame A for the line-feed movement the direction the reverse to that of the said thereof is guided upon the grooved support first-mentioned feed movement, and to conand way 0, and is provided at an under portinue these operations for an indefinite period. tion with the extended rack-bar f, with which The invention consists in the combination engage two separated pinion gear-wheels g 30 or arrangement of parts and devices and in and h, which, through automatic mechanism the construction of certain of the parts, all to be described, are alternately turned in opsubstantially as will hereinafter more fully posite directions, one at one time being posiappear, and be comprehended in and by the tively turned in one direction to correspondclaims, ingly insure the feed movement of the frame 5 For the purposes of uniformityand brevity A, the other then running free in the same the movement of the sheet of stock material direction, and then the other is positively in the direction of its forward edge for the turned in the reverse direction, the adjacent punching out of a row of the blanks will be pinion-wheel then also being rendered free to termed the line-feed,while the forward feed turn as the movement of the said frame A is 40 to present the sheet for the punching out of reversed. The said pinion gear-wheels, asina new row of blanks will be designated the dicated in Figs. 1 and 5, are mounted upon forward feed. arbors g h, respectively provided therefor, Reference is to be had to the accompanying which arbors are supported in suitable fixed drawings, in which an embodiment of the inbearings in the machine in parallelism, and

5 vention is illustrated, Figure 1 being a perthe arbor hhas a gear-Wheel 2 thereon, which spective view of the blank-punching and is in engagement with another gear-wheelj, stock-feeding machine. Figs. 2 and 3 are that is carried on a sleeve 70, which is loosely cross-sections of parts in detail. Fig. 4 is a mounted upon the arbor g, said sleeve at the perspective view of a form of pawl and cam end thereof opposite that carrying gear j be- 50 employed in duplicate in the machine, the ing provlded with the ratchet-Wheel Z. The

same being shown as bottom side up. The said arbor g 1s extended for a suitable disfrom said ratchet-wheel the said arbor has the ratchet-wheel m fixed thereon, which is separated from, but of course axially coincident with, the other ratchet-wheel Z.

n represents a pawl-carrier, which at one extremity is hung to swing in a vertical plane on the arbor g, between the ratchet-wheels Z and m, and a device comprising the two pawl members 10 10 is intermediately pivoted on the pawl-carrier to be swung so that either the one or the other of the said pawl members may be in engagement with one or the other of the ratchet-Wheels. The swing movement of the pawl-carrier is imparted in proper relation to each blank-punching operation of the machine by means of the crank-pin 12 on the driving-shaft B of the machine, which pin is'connected by rod 13 and link 14 to the radial arm 15 on the rock-shaft 16, which latter is mounted in bearings of the main frame, and the link 18 connects the other radial arm 17 of the rock-shaft with the pawl-carrier. One or the other of the pawl members being in' engagement with the ratchet-wheel, of course on each rising of the carrier the soengaged ratchet-wheel will be moved around to the extent of a tooth,or several,if theteeth are comparatively fine. Of course on the downward movement of the pawl on its carrier the engaging pawl recedes to pass back over the next tooth; butin order that the engagement of the pawl with the ratchet-teeth may be insured the double pawl is provided with a fixed arm 19, extended radially from the pivot of the double pawl, (see particularly Figs. 5 and 6,) and to bear yieldingly on this arm a forwardly spring-pressed member p, herein termed an arrow-head, is provided. The shank of the arrow-head plays in the bored portion 20 of the pawl-carrier n, back of which shank isthe spring 22,while behind the spring is the screw-plug 23. The said double pawl has the extension-lug 24:, which has a certain engagement with the yoke 25. The yoke is at proper intervals, on desiring to reverse the line-feed, given a movement in the proper direction across the line of t-helug 24 sufficient to, through the engagement of the yoke with the lug 24, insure the swinging of the double pawl, so that the other pawl member will then be in engagement with the other ratchet-wheel than the one which had last been positively actuated, the arm 19 at such shifting of the pawl crowding past and to the other side of the point of the arrowhead. The means and manner of effecting this movementof the yoke will be now explained, particular reference beinghad to Fig. l. q represents a' rock-shaft suitably mounted and supported on the main frame of the ma chine to extend at right angles to the run of the frame A, the same being provided with a fixed radial arm 28, which may be engaged, as the frame A completes its movement for line-feed either forward or backward, by the rigid abutment-lugs 3O 30, the one or the other, which are indicated as being mounted on a suitable part of the said frame Aas, for instance, the rack-bar f-the distance between the said abutment-lugs 30 corre sponding substantially to the length of run of the said movable frame A. 3 represents a slide supported and guided for movement on the machine-frame at right angles to the length of the rock-shaft g, and is provided with the abutment-studs 33 33, located at suitable distances from each other, substantially as indicated, and the said slide 5 has suitable extension and supporting members,

as indicated at 35 and 36, upon which the said yoke is fixed to move as one therewith. t represents a radial and upwardly-extended arm fixed 011 the rockshaftq, the same being arranged for a swinging movement as the shaft q rocks adjacent the slide 8 and to have an abutment with one or the other of the said studs 33, according as the shaft q is rocked in the one or the other direction, and the said radial arm t is provided at its upper end with a trough u, having end walls. Now

assuming that the machine is being run so that the line-feed of the frame A is in the direction of the arrow in Fig. 1, one of the pawl members 10 being in engagement with the sleeve carried ratchet wheel Z, whereby, through gears j and t', the arbor h and pinion h are turned to secure the movement of the said frame in the direction stated, the frame on completing its movement brings the lefthand abutment-lug 30 into engagement with the then oblique radial arm 28, thereby rocking the shaft q and carrying the radial armt into substantially a vertical position, which effects just enough movement of the slide 8 and yoke 25 to so swing the double-membered pawl that both members 10 10 thereof stand out of engagement with the ratchet-wheels Z and m, and the arm 19 at such time bears on the point of the arrow-head; but such rocking movement of the shaft and swinging of the comparatively long trough-carrying arm I, which has to roll therein from end to end the ball 1', imparts, though slight, a sufficientimpetus to the ball to roll it to the other end of the trough from that which it had theretofore occupied, the same causing the necessary further swinging movement of arm t to force the slide to the limit of its movement, and consequently the carrying of the pawlarm 19 past the arrow-head and the pawl member which had last been free of the ratchet-wheel m into engagement therewith. Now of course on each reciprocatory movement of the pawl-carrier the arbor gand pinion 9 will be positively turned, securing the reverse line-feed of the frame A and the sheet of stock material supported thereupon. This reverse feed movement having been completed, the inner abutment-lug 30 (indicated by the dotted lines in Fig. 1) effects the swinging of the radial arm 28, rock-shaft q, and troughcarrying arm 23, assisted by the rollin g ball into IIO the position shown in Fig. 1, again shifting the pawls and seen ring another reversal of the line-feed. A plurality of the blanks having been punched out from the forward edge portion a of the sheet of stock material at the completion of the line-feed in one direction and before the reversed line-feed is commenced, the mechanism for effecting the forward feed is actuated, and such mechanism will be now described. w represents a shaft or arbor on which the under feed-rolls d for the sheet of stock material are mounted, or of which shaft said rolls form a peripheral part, and said shaft 10 is supported for its intermittent rotational movement in bearings 39 at the forward edge portion of the frame A, and the shaft extends in the direction of the line-feed movement and is not intended to have any endwise movement. The upper pressure and feed roll I) is carried above and parallel with the rolls (1 d by the spring-arms 42 42, which are attached on frame A. D D represent sleeves mounted upon the shaft 20 at different portions thereof, which are separated by a distance corresponding to the length of line -feed movement, and each of said sleeves is provided with alengthwise rib 44;, which is of helical contour or otherwise suitable to form a cam, and each of said sleeves D is also provided with an angularlyextended member 45, which constitutes a carrier for the pawl 47, which pawl has an engagement by the tooth thereof with the ratchet-wheel 48, which is fixed upon the shaft 10 next to the end of the sleeve D. The spring 49, Fig. 2, is applied to maintain the pawl in engagement with the ratchetwheel. The spring 50 is applied with relation to the sleeve D to maintain the cam 44: in the normal. position under the shaft, as indicated in Figs. 1 and 2. 52 52 represent impingement-studs supported-at proper positions on the main frame of the machine near the shaft 20, and all so that the frame A, running in one direction to the completion of its movement, brings the sleeve D adjacent one of the studs 52, which,impingingupon thecam-ribt,partially rotates the sleeve, rocking the pawl-carrier 45 forward and effecting the forward feed of the sheet of stock material. The reversal of the line-feed then taking place, the spring 50 restores the sleeve, with the pawl-carrier and the cam-rib thereon, to their normal positions. As this reversed line-feed movement is completed, the other sleeve D is brought into proximity to the other impingement-stud 52 and another forward-feed movement is effected.

The punching mechanism is not deemed to involve any particular or important novelty, the same comprising the tubular and stationary punch member E and the male plungerpunch 13, carried on the slide G, which, is movable upon the head II of the machine, the reciprocatory movement of said slide being imparted in any usual way-as, for instance, by a crank (not shown) on the main shaft B. The paper is by its forward portion, as indicated in Figs. 7 and 8, carried between the horizontal and apertured plate 60, which is supported at the lower portion of the head H, and the plate 62, which is spring-supported on the main supporting part J of the machine, said plate 62 being apertured, as at 63.

.K, Fig. 8, represents a member of a shear carried on the slide G forward of the punch 13, the same coacting with the stationary shear member L to sever a portion of the Waste and perforated section of the sheet of stock material which is just in advance of the line being punched.

What I claim as my invention is- 1. In a blank-punchin g machine, the combination of the frame, as A, and supports therefor on which the same is movable, said frame being provided with a rack-bar which extends in the direction of the movement thereof, a pair of separated pinions g and h, engaging the said rack-bar, and the arbors g and h, on

which said pinions are carried, and the one having thereon the ratchet-wheel m, and the arbor h having thereon the gear-wheel z', the sleeve is, loosely mounted on the arbor g and having the gear-wheel j, which meshes with the one 2', and also having the ratchet-wheell thereon, and mechanism for alternately actuating said ratchets Z and m, for the purpose set forth.

2. In ablank-punching machine, the co mbination, with a frame, as A, supported and movable, substantially as described, and the separated ratch et-wheels Z and m, respectively mounted on rotary bearingsupports therefor and connected with the said frame for reversely moving same, substantially as described, of the pawl-carrier n, mounted for a reciprocating movement, and means for imparting the same thereto, the double-membered pawl pivoted on the carrier, and devices intervening between and connected to the said movable frame and said double pawl for periodically shifting the latter, whereby the one or the other member thereof may be in engagement with the one or the other of the said ratchet-wh eels, for the purpose set forth.

8. In a blank-punching machine, the combination, with the ratchet-wheels Z and m and axial rotary parts on which same are mounted, of the reciprocating pawl-carrier n, having the double-membered pawl pivoted thereon and the same being provided with the extensionlug 24, the yoke 25, engaging said lug, and the slide 3, on which the same is carried, having the studs 83 33, the rock-shaft q, having the radial arm 28 thereon, and the arm 25, provided with the trough and ball, and the movable frame A, provided with separated lugs 30 30, adapted to alternately engage the said arm 28, and intervening movable connections connected to the said frame and to the rotary ratchet-supporting parts, substantially as and for the purposes set forth.

4.. In a blank-punching machine, in combination, the frame A, supported and movable, as described, the ratchet-wheels Z and m, having separate rotary supports which are gearconnected to the said frame for respectively insuring a line movement thereof in reversed directions, the swinging pawl-carrier n, hav ing the double pawl pivoted thereon, the rock-shaft 16, having arms 15 and 17, the link connecting the latter with the pawl-carrier, the driving-shaft having the crank-pin, and a connection between the same and the arm 15, substantially as described.

- 5. The combination, with the ratchets Z and m, of the reciprocatory pawl-carrier having the double-membered pawl pivoted thereon provided With the arm 19, the arrow-head mounted on the pawl-carrier and forwardly spring-pressed and having a yielding pressure on the said arm, the frame A, having the abutment-lugs 3O 30, the rock-shaft q, having the radial arm 28, and the trough and ball and carrying-arm if, the slide 8, having the studs 33 33 and supporting a yoke which has an engagement with said double-membered pawl, all for operation substantially as and for the purpose set forth. 0

6. In a blank-punching machine, the com bination, with a frame, as A, having thereon the feed-roll shaft w and a coacting feed-roll b, and said shaft to having thereon the fixed ratchet-wheels 48 48, and the sleeves D D, each having the cam 44, and the springpressed pawl 47, the stationaryimpingementstuds 52 52, and means for moving the said frame, all as and for the purposes set forth.

FRED. H. HARDMAN. Witnesses:

IT. A. CHAPIN, M. A. BIGELOW.

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