US589598A - grant - Google Patents

Description

(No ModeL) 5 Sheets-Sheet I.

J. W. GRANT. METAL BLANKING AND STUDDING MACHINE.

No. 589,598. Patented Sept. '7, 1897.

Fwl

{WInm..."9"Ilu ImmHillllmffli INVENTOR a wy;

WlTNEsSEs 'm (No Model.) 5 Sheets-Sheet?.

J. W. GRANT.

METAL BLANKING AND STUDDING MACHINE.

No. 589,598. Patentedept. 7,1897.

9 ...HIHHI l Humm...

|NVENTOR we uonms Psrms 00.. Pnmou'mo.. wAsnmc-Yon, n. a

(NdMoaex.) l 5 sheets-sheet 3.

J. W. GRANT. METAL BLANKNG AND STUDDING MACHINE. No. 589598. y Patented Sept. 7,1897..

NVENTOR (No Model.) 5 Sheets-Sheet 4.

J. W. GRANT.

METAL BLANKING AND STUDDING MACHINE. No. 589,598. Patented Sept. 7,1897.

La s ...if .z

? l gq WlTN ESSES INVENTOR E p .J0`

2Q g] r4 15s. t J? 7 i l @a my (No Model.) A 5 Sheets-Sheet 5. J. W. GRANT. METAL BLANKING AND STUDDING MACHINE.

Patented Septf?, 1897.

INVENTOR WsTNEsses f5 AM ...l 4 HI INGYON. D. C.

UNITED STATES PATENT Ormes.

JAMES lV. GRANT, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THF. VARNER BROTHERS COMPANY, OF SAME PLACE.

METAL B LANKING AND STUDDING MASI-HNE.

SPECIFICATION forming part of Letters Patent No. 589,598, dated September '7, 1897.

Application filed April 23, 1896. Serial No. 588.761. (No model.)

To all whom, t r11/Cty con/cern:

Be it known that I, JAMES W. GRANT, a citizen of the United States, and a resident of Bridgeport, in the county'of Faireld and State of Connecticut, have invented certain new and useful Improvements in Metal Blanking and Studding Machines, of which the following :is a specification.

This invention relates to certain new and useful improvements in metal blanking and studding machines; and it has for its object to simplify and increase the eiiiciency of such machines as well as'to render the operation thereof whollj,7 automatic.

W'ith these objects in View the invention consists in feeding a metal strip or sheet' to punching devices wherein)T holes are formed in said strip, in inserting sections of wire in certain of said holes and securing them therein to form studs, and in cutting out sections of the strip,each havingstudssecured thereto.

To enable others to fully understand my invention, reference is had to the accompanying drawings, in which- Figure l represents a front elevation of the machine, which, for the particular use to which it is to he applied, is an ordinary powerpress, showing the gate in a raised position, and also broken view of the su pporting-legs. Fig. 2 is a rear elevation of the machine. Fig. 3 is a detail side elevation of the supportingyoke slide which. connects the gate with the upper frame of the press. Fig. a is a detail rear elevation of the press-gate carrying the wire-feeding slide,on which wire-feeding slide are mounted the wire-gripping jaws with sections of wire therein, with the movable jaw in open position, showing also the lever operating such jaw broken at its upper end. Fig. 5 is a broken detail end elevation, partly in section, of the press-gate on line l) of Fig. et. Fig. 6 is a detail rear end elevation of the tool-holder carrying the piercing and blanking tools and also the stud-carrying slide, which block is adapted io be itted to the angular groove at the lower end of the pressgate. Fig. is a detail side elevation, partly in section, of the tool-holder, section of wire therein, showing also such wire fed below the holder in readiness to sever a stud-blank Fig. S is a detail side elevation,

therefrom.

partly in section, of the tool-holder, showing the stud severed from the wire rod and such stud carried bythe movable slides, so that one end of the stud is against the anvil of the tool-holder. Also in this View is shown a broken sectional View of the die-holder with a pierced metal strip thereon, into which strip the lower end of such stud is forced, a lower movable anvil or header to engage such projecting end, and a broken section of the operating-lever for such header. rFig. Si is a detail Aside elevation of the header and itsv operating-lever and sectional view of its s upporting-standard. Fig. l0 is a detailvew of the release-cam for one of the stud-carrying slides of the tool-holder, and broken View of a movable rod connected with such slide with which such cam engages. Fig. ll is a detail bottom plan view of the tool -holder and broken view of the shaft on which the release-cam is mounted. Fig. l is a detail View of the stud-carryin g slides gripping two studs and such slides moved back, bringing the ends of suoli studs in contact with the anvil of the tool-holder. Fig. 13 is a detail end View of the tool-holder anvil and wire-supporting plate. Fig. lai is a sectional View of the metal strip with two studs riveted therein.

Fig. l5 is a detail broken side elevation of the stud-.carrying slides with a stud gripped between their fingers. Fig. 1U isa detail upper plan view of the die-bed, operating-lever of the header and its standard beneath such bed, feed-rolls for the metal strip, standard for such rolls, ratchet-wheel and broken view of i the operating-rod for such ratchet-wheel, and section of metal strip with which such feedrolls are engaged, such strip showing thereon the effects of the piercing and blanking tools. Fig. 17 is a broken section of the metal strip,- showing the operation of the tools thereon.

Broadly stated, myinvention consists in a machine embodying means Afor feeding a metal strip and for punching holes therein, mechanism for feeding a wire and for severing a section therefrom and inserting the severed section through a hole in the metal strip and securing it to said strip. Various constructions may be employed for effecting these operations, and the cooperating mechanisms may he arranged in various manners IOC without departing from the scope of the invention.

One embodiment of the invention is illustrated in the accompanying drawings, and in actual practice this construction has proved exceedingly effective.

1 is the frame of an ordinary power-press which, as before stated, is well adapted for blanking and studding small articles, which in the present case isan eye for corset-steels.

2 is the vertically-movable gate. In an ordinary press the gate is operated by a crankshaft and pitman; but in this instance the gate is necessarily operated in a different manner to effect the result sought to be accomplished.

3, Figs. 1 and 3, is a yoke having a circular central portion or swell that embraces the driving-shaft 4. The lower part 3 of this yoke is secured to the gate by screws 5,while the upper end 3b is movably secured by the cap G to the upper part of the frame of the press.

7 is a bolt whose threaded portion engages the yoke,while the head of suchbolt engages with the forked lug 8 on the gate 2. This bolt still further secures the yoke to the gate.

9 (see also Fig. 2) are rolls mounted upon the short shaft 10 of the yoke-brackets 11. These rolls engage with the cams 12 l2, mounted upon the driving-shaft 4. This arrangement of the rolls and cams elevates the gate, whilethe central cam 13 engages with the roll 14 to depress such gate. This roll 14 is journaled on a pin between the ears 15 of the forked extension integral with said yoke. 15 is a threaded stud in the gate, having the head 16 and nut 17, whereby the yoke, with the roll attached, is vertically adj usted,which arrangement also adjusts the position of the gate with respect to the die-block, presently to be described.

j Various means may be employed for feeding and severing the wires into sections and for securing t-he severed sections in the strip before cutting out the blank, but that which I will now describe has proved to be a convenient and efficient arrangement and it is preferred on that account.

18 (see also Fig. 4) is the wire-feeding slide vertically operating in the ways 19 on the face of the gate. This slide has an independent movement on such gate through the medium of the lever 2O and vertical face of the cam 12 on the driving-shaft 4. On the face of the cam is the wedge-shaped step 20, that, engaging the head 2Gb of lever 20, will both 0perate to tilt such lever on the pivot-al screw 21 and force it vertically downward as well. The retractile spring 22 will return such slide to its normal elevated position.

23 (see also Fig. 5) is agripping-jaw on the lower end of the lever 20, having a circular groove in its face for the wire 24. In this machine two wires 24 and 25 are fed down, for the purpose presently to be more fully `described.

424, and under this lateral pressure the springtongue will be forced toward the stationary jaw 2b', thus gripping both wires through the medium of one movable jaw. -The next operation performed by the cam 12 will be to force the slide 18 down, carrying the said wires with it.

29 is an adjusting-screw in the top of the slide 18 to limitits upward movement by such screw striking against the upper wall 29 of the recess in which such slide operates.

30 (see Figs. 1, 2, 6, and 8) is the tool-holder, which (see also Fig. 4) fits the dovetail opening 31 of the gate.

32 are two small punches for the stud-holes 33, Fig. 17, in the corset-eye, and 34 is the punch for the keyhole-slot 35, while 36 is the blanking-punch which blanks the completed corset-eye 37 from the metal strip.

32b are screws for adjusting the punches 32.

38 and 39 are the stud -blankcarrying slides operating from the .front and rear of such holder toward the center. Semicircular grooves are provided in the meeting faces 40 41 of such slides to embrace the Wires 24 and 25. The inner ends or fingers of these slides are (see Figs. 7 and 8) thinner than the body port-ions, which slide inthe ways 42 and 43 of the tool-holder. The thickness of these iingers is equal to the length of the studs 44 and 45, Fig. 14, which project from the metal strip 46, and such fingers are also hardened.

47 is a plate which overlies the wires on the end of the tool-holder, and 48 is a clamp whose upper end is pivotally supported to the bracket 49, while its free end has the rightangle projection 49a, which projection or 1inger enters the elongated slot 50 of the plate 47, and such finger is adapted to engage the wires and hold them firmly against the toolholder when the Wire-carrying slide 18 is retreating to grip the wires farther up for another downward feed.

51, Fig. 2, is a lever whose finger 51"L engages the outer face of the clamp 48, while the free end of such lever engages the face of the cam 52, which lever operates to force the said clamp against the wires, and 48fL is a spring interposed between said clamp, shown in an open position, which spring serves to keep suchclamp against the finger 511.

53, Figs. 7 and 8, is an anvil inV the toolholder, whose purpose will presently be more fully described.

54 is a plunger that enters a hole in the outer end', of the stud-blank-carrying slide 39, and 55 is a spring placed at the bottom of IOO IIO

such hole to act against the inner end of such plunger to force it out.

G is a cam mounted. (see Figs. l, 7, 8, and ll) on the rod 57 of the bracket which bracket is attached to the end of the toolholder, as shown.

59 is an arm on the outer end of the rod 57, which is pivot-ally connected to the operating-lever bO, pivoted in the ears (il of the press-gate. The upper end of this lever carries the roll 62, which engages with the cam G3 on the driving-shaft 4. The cam 5G is designated as the release-cam, and its purpose will hereinafter be more fully described.

64, Fig. 2, is a lever pivoted between the ears G5 of the press-gate, whose upper end is` brought in contact with the cam 66. The lower forked end of the lever embraces the projecting pin 67 of the slide-3S to operate such slide.

GS, Figs. l, 2, and 1G, is the die-block having the usual strippers GQ and 70, overlying the dies in said block. 7l and 72 are feedrolls in the traine 7 3.

74 is a ratchet-wheel mounted on the outer projecting end of the roller- pin 75, and 76 is a lever also pivotally supported on such pin and which lever carries the pawl 77, which pawl engages with such ratchet-wheel. .Rod 7S connects the outer end of this lever with the crank-plate 70, mounted on the outer projecting end of the driving-shaft 4.. This arrangement of the said rod, lever, pawl, and crank-plate feed the metal strip forward to the dies.

Any suitable arrangement of devices may be employed for heading the studs upon opposite sides'of the metal strip, but preferably it is desired to employ parts upon each side of Athe strip which may be actuated to either be simultaneously reciprocated toward each other or be actuated to reciprocate simultaneously in the same direction to coperate and head or upset the stud upon opposite sides of the metal strip. Those heading devices which I have shown are actuated to reciprocate simultaneously toward each other.

SO, Figs. S and 9, is the header which (see also Figs. 2 and 1G) is mounted on the lever Sl, which lever is pivotally mounted upon the standard S2. The outer end of this lever is engaged by the vertical rod 8l, supported in the bearings 85 of the press-frame. The up per end of this rod engages the cam S6, whereby the lever Sl is tilted. A hole is provided in the die-block for the larger portion orbod y of the header 80, and also smaller holes to receive the two u pri glits S7. These uprights are intended to support the ends of the studblanks that project through the metal strip and to head the same, in the manner presently to be more fully described.

S9 is a nut mounted on the lower threaded end of the rod Sil' to adjust the position of the header S0 in the die-block.

90 is a retractile spring to keep the rod Si against theV face of the cam.

Operation The tools of the press, as shown at Figs. l and 2, are in a raised position, and the lirst movement in the operation of blanking and studding will be. to close the movable jaw and firmly grip the wires in the manner .before mentioned. Next the wirefeeding slide 18 is moved downward, so as to project the ends of such wires below the lower face of the tool-holder, Figs. 7 and 1l, when the gate 2 will move down until such projecting ends of t-he wires are brought close to the metal strip, whereupon the slide 3S is moved forward to engage such projecting ends, which ends, by reason of the resistance offered by the slide 39, are held firmly between the fingers 38 and 39LL of such slides, it being understood, but not shown, that two grooves for the wires are formed in the longitudinal face of the anvil, thus makinga combined anvil and cuttingotf die, so that when the slide 38 Acontinues to advance it will cut off two sections of the wire and force the slide 39 back until the severed ends or stud-blanks are carried over and against the end of the anvil 53 and on aline with the holes 33 in the metal strip, which holes, as previously mentioned, were made by the punches 32, whereupon the said slides will halt until the gate 2 descends toward the dieholder, forcing the ends ot' the stnd-blanks that project below the iingers of the slides intothe holes 33 of the metal strip and also far enough through such strip to head. In the meantime the projections 87 of the header 8O have been carried up into position close to the under side of the metal strip. The downward pressure of the gate, with'the upper end of the stud-blanks resting against the projections 87 of the header and anvil 53 of the tool-holder 30, will not only form thek heads 44 and 45, Fig. le, but will also form the shoulders 441 and 45 on the upper side of the metal strip, thus firmly securing the studs both on the upper and the lower side of such strip. It will be understood that to forni the heads of the studs the ends ofthe projections S7 of the headerare cupped out suliicient for that purpose, while the side pressure of the hardened lingers 38a and 39L of the slides, combined with the downward pressure exerted by the gate, will cause a lateral enlargement of the stock to form the upper shoulders 441 and 45h. To make room for these shoulders, so they will be flush with the upper surface of the metal strip, I prefer to make the shoulders .32 of the punches 32 slightly convex, (see Fig. 6,) so as to form the cupshaped depressions 33a, Fig. 17, around the upper edge of the holes lVhen the operation above mentioned is completed and just before the gate retreats, the cam 5G, Fig. l0, is turned so as to present the lowest point to the end of the plunger 54, which will relieve the pressure or grip ot' the slide-finger 39 on the studs, so that the slide 39 may return to its normal position with the slidc 3S, or, in other words, both IIO slides Will return together. It will be understood that at each revolution of the drivingshaft 4 the stud-holes 33, Fig. 17, and keyholeslot 35 are pierced and the studs are cut off, forced, and riveted in the previously-formed holes in the strip and the 'corset-eye 37 be blanked from the metal strip. Holes 36a are provided in the face of the blanking-punch 36 to admit the studs While said punch is operating on such metal strip.

When the Wire-feeding slide is about to retreat, the clamp-finger 418 Will be brought into engagement with the Wires 24 and 25 and hold them firmly in the tool-holder block, so as to prevent a retrograde movement of such wires.

Heretofo're it has required several preparatory machines'befor'e corset-eyes could be made and attached to the corset-steel. First, the eye was pierced and blanked and fthe rivets made separately and inserted loosely in such eyes by means of an assembling-machine. This manner of constructing corset-eyes and similar Work Wasnot only expensive, by reason of the many operations and hand manipulation,but the loss of the small parts yadded considerable to the cost.

In my improved machine the eye is completed and the `studs securely attached thereto in one machine, so that the matter of riveting such eyes `or other like article by means of the studs to the corset-steel is a very simple and inexpensive operation. As before mentioned, this arrangement of elements for blankin g and studding corset-eyes can be used for other articles as `avell, With, if necessary, different tools for the particular work required.

Having thus described my invention, what -I claim as new, and desire to secure by Letters Patent, is-

l. The combination of mechanism for feeding a metallic strip and for punching a hole therein, of means for feeding a section of Wire through the hole in the strip and cooperating devices upon opposite sides of the strip for upsetting the Wire section upon both sides thereof, one of said devices comprising gripping-jaws moving in the line of the Wire, and the other comprising a reciprocating header, substantially as described.

2. The combination with a die-block having a reciprocating header, of an anvil, and means for reciprocating it toward and away from the die-block, devices for punching an opening in a strip, means for feeding the strip upon the die-block to bring its opening into alinement With the header, and mechanism for feeding a section of Wire beneath the anvil and in alinement With the opening in the strip, substantially as described.

3. The combination with a die-block, a reciprocating header and a reciprocating anvil carrying a punch, of means for feeding a strip upon the die-block, Wire-feeding mechanism, and devices for severing a section from the Wire and for moving said section beneath the reciprocating anvil in alinement with the hole in the strip, substantially as described.

4. The combination with a die-block a punch and strip-feeding mechanism, of a reciprocating gate and an anvil, devices for feeding a Wire and severinga section thereof and transferring the severed section beneath the anvil in alinement with the hole in the strip, all carried upon the gate, substantially as described.

5. The` combination with mechanism for feeding a metal strip, for punching openings therein, and for cutting blanks therefrom, of devices for feeding wire and for securing sections thereof to the strip before the blanks are cut from said strip, substantially as described.

6. The combination With mechanism for feeding a metallic strip, of punches provided with convex shoulders adapted to punch openings in the strip, means for feeding a section of Wire through the opening in the strip and for upsetting the section on opposite sides of the strip and Within the depression formed by the punches,the upset portion of the Wire section Within the depression b'eing iiush with the face of the strip, substantally as described.

'7. The combination, in a machine for forming studded blanks, of a movable support carrying a Wire-feeding device, piercing and blanking tools, transversely-operating tools for severing sections from the Wire and carrying them out of the Wire-feeding line, said support adapted to move forward, insert, and secure such sections in holes formed in a metal strip, and means, substantially as shown, whereby a partial release is given to one of the section-carrying tools to prevent dragging on the sections when the movable support returns, substantially as described S. In a blanking and studding machine of the character-described,the combination With a stationary' die block, a movable header therein, of a gate or other like movable support carryingindependent Wire-feeding mechanism,piercin g and blanking punches, cut-off andstud-blank-carrying tools,said cut-off and stud-blank-carryin g tools and punches placed bet-Ween the Wire-feeding mechanism and the die-block and header, so that, by the combination and cooperation of the above-named elements holes are pierced in a metal strip, the wires are fed forward, stud-blanks cut therefrom and such blanks transferred in line with said holes and secured therein, and an article embracing such studs blanked out of such metal strip, substantially as set forth.

9. In a blanking and studding machine of the character described,the combination with a stationary die-block having piercing and blanking dies therein, a heading-tool operatively placed intermediate of said piercing and blanking dies, a gate or other like movable support carrying piercing and blanking punches, cuttingolf and stud-blank-carryin g TOO IIO

tools intermediate of said punches, a wirefeeding device on said movable support, said punches, cutting-oif and stu f l-blank-carrying tools intermediate of the Wire-feedin g device and the said die-block and header, all coinbined so as to pierce holes in a metal strip, cut-oil sections of the Wires to form studs and transfer such sections ont of the Wire-feeding line and in line with such holes, insert and secure them therein, and blank out a corset: eye or otherlike article embracing such studs, from -the said metal strip, substantially as described.

lO. The combination, in a blanking and studding machine, of a wire-feeding device consisting of stationary and movable jaws having an intermediate spring-tongue, a movable gate on which such wire-feeding device has an independent movement, a tool-holder carrying piercing and blanki ng tools attached to such gate, cut-off and stud-carrying tools in said holder, al clamp having a iingerA at right angles thereto to engage With and prevent the wire moving back when the wirei'eeding device is retreating, for the purpose set forth.

1l. The combination, in a blanking and studding machine, of a Wire-feeding device, a tool-holder carrying piercing and blanking punches, tools for cutting a projected section of wire and carrying such section out of the Wire-feeding line, a die-block and header, such tool-holder, section cutting and carrying tools placed between the Wire-feeding device and said die-holder and header, for the purpose described.

lf2. ln a combined blanking and studding machine, a Wire-feeding device having an independent movement on a movable support, a tool-holder. having piercing and blanking tools for cutting a section (to form a stud) from the projecting end of the Wire and carryin g such stud out of the feeding-line of such Wire and in line with the piercing-tools, a dieblock, suc-h tool-holder, and section cutting and carrying tools placed intermediate of the Wire-feeding device and the said die-block, a header to engage the projecting end of the wire section or stud, combined with anupper anvil to engage the opposite end of the stu'd, which, combined with the side pressure of the section-carrying tools, will form a head and shoulder on such stud, for the purpose as set forth.

13. The herein described machine for blanking and studding, comprising, in coinbination, a movable gate, a yoke attached to said gate and embracing the driving-shaft, the upper end of such yoke adjustably secured to the machine-frame, rolls on such yoke to engage lifting-cams on such shaft, said gate carrying an adjustable roll to engage a cam on suoli shaft, a wire-feeding device having an independent movement on such gate, a tool-holder in the loiver end of such gate and carrying piercing andblanking punches, transversely -operating tools for cutting a section from the projecting end of the wire and conveying such section, or stud-blank, out of the feeding-line of such wire and in line with the piercing-tools, a dieblock and header, all combined so that, when the Wire-feed has projected a section of Wire, sufficient to form a stud, the cut-od and studcarrying tools will sever such section and carry it ont of the feeding-line of the Wire and in line with holes-formed by the piercing-tools-in a metal strip on the die-block, and such stud-blank headed from below and shoulders formed on the stud above the in etal strip, for the purpose set forth.

1l. In a machine for forming studded blanks, the combination of sheet-metal feeding, piercing and blanking devices, Wire feeding, cutting, transferring and upsetting devices, eooperatiug so as to pierce stud-holes in a metal strip; feed the Wires a predetermined length, cut sections therefrom, transfer such sections out of the Wire-feeding line and inline parallel with said stud-holes, said strip fed forward so as to bring such holes in vertical alinement with said sections, insert an d secure such sections therein to form studs, feed the metal strip containing such studs ,to the blanking-tools and blank an article embracing such studs therefrom, substantially as set forth.

Signed at Bridgeport, in the county of Fairiield and State of Connecticut, this 20th day of April, A. D. 1896.

JAMES Vv. GRANT.

lVitnesses:

HENRY SCHADT, .Lewis F. PELTON.

Images