US250116A

US250116A - William e

Info

Publication number: US250116A
Authority: US
Publication date: 1881-11-29
Anticipated expiration: 1898-11-29

Description

(Model.)

W. E. WARD.

NUT MAKING MACHINE. No. 250,116. Patented Nov. 29,1881.

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e UNITED STATES lPATENT OFFICE. i

WILLIAM E. WARD, OF PORT CHESTER, NEW YORK.

NUT-MAKING MACHINE.

SPECIFICATION- forming part of Letters Patent No. 250,116, dated November 29, 1881.

Application filed April 4, 1881.

To all whom it may concern Be it known that I, WILLIAM E. WARD, of, Port Chester, county of Westchester, and State of New York, have invented a new and useful Improvement in Machines for Forming Nut- Blanks; and I do hereby declare that the following specification, taken in connection with the accompanying drawings, forming a part of the same, is a full, clear, and exact description thereof.

My invention relates to a machine which performs all the operations necessary for automatically making finished nut-blanksfrom cold barsof metal.

It consists in a combination of devices for performing the following sequence of operations, viz: First, punchingthe blank from abar of metal while such bar is clamped rmly by pressure applied laterally thereto; second, transferring the blank to a mold, Where it is laterally supported while its top surface is crowned by means of a die of suitable form and while the blank is resting upon the end of the punch as an anvil; third, transferring` the blank andthe mold in which it is contained to a new position, where it is subjected to the action of a plunger, which clears it fromA the mold and deposits it in a second mold or receptacle; fourth, punching the central hole in the nut-blank while it is supported upon all sides in the second receptacle and while it is held against vertical displacement 5 fifth, transferring the blank while in the second receptacle to a new position and between a suitable shearing-die and plunger, which plunger drives the blank out of the second receptacle and into and through the shearing-die, by which the edges of the blank are trimmed and the blank brought to a position from whence it can be discharged iinished from the machine.

Referring to the drawings, Figure l represents my improved machine in front elevation. Fig. 2 shows a side view of the same. Figs. 3, 4, and 5 show details of the parts in various positions which they assume during the formation of a completed blank, and Fig. 6 represents a completed blank.

A is the frame of the machine, in and upon which the various parts and devices are mounted. Power is applied to the machine through a pulley, B, mounted on a shaft, B', to which (Model.)

is secured a pinion, b. This pinion meshes with a gear, c, secured to the lower cam-shaft, G, the said gear meshing with a gear, d, secured to the upper cam-shaft, D.

Although not shown in the drawings, the machine is intended to be supplied with any of the usual feeding mechanisms adapted to deliver the rectangular bars from which the blanks are formed to the machine and in termittingly advance said bars as the blanks are removed therefrom, in a manner well known in the art.

The flatbars of metal out of which the nutblanks are to be made are fed into the machine through a rectangular orifice, c, formed by a steel bushing, E, secured in a stationary block, E', Figs. l, 3, 4, and 5. This block and its bushing are perforated to allow of the entrance of the punch F, which islocated in` a vertical plane below the said block and reciprocated by an eccentric, Of, upon the shaft O.

Located immediately above the orifice e, and in the same vertical plane as the punch F, is a shearing-die, g, which is mounted in a stationary block, Gr, Figs. 3, 4, and 5. The wall e' of the bushing E bears such a relation horizontally to the opening in the die g as to form a side gage and support for the bars when they are clamped to be punched. 4

The rst operation in the formation of the nut-blank being to punch the same from a bar of metal, which, in order to save waste, is not much wider than the intended nut-blank, it is necessary that the bar should be firmly clamped laterally, that the punch may perform its office with the best effect.

The clamping device consists of two members, one of which is stationary and theother movable. The stationary member consists of the vertical wall c ofthe steel bushing E, and the movable member is the bar H, Figs. 1, 3, 4, and 5, which is arranged to slide inthe bar E', as shown in the several figures. The outer end of the clamp-bar, which projects beyond the frame of the machine, is connected by a link to the shorter arm of a lever, I, Figs. 1 and 2, whose fulcrum is on a xed stud or projecting member of the main frame. The longer arm of saidlever carries afriction-roller, against which a side cam, D', upon the shaft D is in constant bearing. The cam D', as it rotates,

causes the clamp-bar to vibrate, and is so shaped and timed as to clamp the bar from which the blanks are to be punched hard against the vertical lwall c of the bushing E, and this pressure continues during the time that the punch F is in action to punch out a blank.

To punch out a blank, the punch F ascends, and, co-operating with theshearing-die g, cuts off a blank from the bar, and then, continuing itsvertical movement upward, carries the blank upon its end into a mold,j, which mold is set in a carrier, J, as shown in Figs. 3 and 5. -The blank by this movement is made to project a short distance above the top surface of the mold. The punch F now pauses and performs the function of an anvil to resist the pressure which is about to be applied to the blank by the device for crowning the top surface thereof.

The crowning of the blank iseifected by the plunger K, whose end is provided with a steel die of suitable form to produce the .shape of head which is to be given to the blank. This plunger is fitted to slide vertically in suitable guides, and is operated by a grooved sidecam, D2, on the shaft D. While the blank is in the position last mentioned, and supported upon the end of the punch F as an anvil, the plunger K descends and performs its office; and, to expedite the action of the machine,the movements of the punch and the plunger carrying the crowning-die are so timed relatively to each other that the punch Vcomes to rest an instant before the crowning-die reaches the blank. This operation havin g been performed, the plunger K commences to ascend, and at the same time the punch F descends and clears itself from the bar out of which the blank was punched. The clamp-bar H has also now released the bar, and the devices for feeding the bar forward for a new blank can again come into action when the proper time arrives.

The next operation of the machine is to transfer the blank while in themold j to another position, (shown in Fig. 4,) where it is tobe subjected to the action of a plunger to clear it from the mold.

' The transference of the blank is effected by the carrier J, in which the mold j is located. This carrier is ahorizontally-sliding bar, jointed at its rear end to a lever, L, the fulcrnm of which is upon the frame of the machine, as shown in Figs. 1 and 2. The movement of this lever is controlled by the cam C2 upon the shaft C. While the carrier J is moving to transfer the blank to its new position a second mold or receptacle, j', is made to move in a plane parallel with the plane occupied by the carrier J, but below the same. This second mold or receptacle is located in a sliding bar, J', similar to the carrier J, and is operated by means of an inclined slot or cam-face, m, formed in a vertically-slidin g plate, M, Fig. 1. This vertically-sliding plate is worked at the proper times by a cam, C3, upon the shaft G. The connection between this cam and the sliding plate M is a pitman, m', pivoted to the plate at one end, and at the other to an arm, m2, carrying a friction-roller, which engages with the cam C3. By the time that the carrier J carrying the nut-blank has reached its proper position the said sliding bar J', carrying the second mold or receptacle for the blank, has approached from the opposite side of the machine to a position where the receptacle j is directly underneath the mold j, as shown in Fig. 4.

The next operation to be performed by the machine is to cause the partially-completed nut-blank to be transferred to the receptacle j. To eifect this a hollow plunger, N, is worked by the duplica-te cams D3 upon the shaft D for its descending movement, and by a spring (not shown) for its ascending movement. The blank having been brought to the position before indicated, the said plunger N, whose axis is hollow for the purpose of giving space for and support to a punch, N (presently to be mentioned,) next descends and forces the blank out of the mold j into the receptacle j'. The said blank is forced down into the receptacle j until it rests upon an annular seat, O, just below the lower face of the said receptacle, as shown in Fig. 4. The hollow plunger N now rises far enough to enable the carrier J yto retreat preparatory to a second performance of its functions, and thereupon the hollow plunger again descends and presses the nut-blank hard upon its bed 0. The punch N', operated by an eccentric, D4, on the shaft D, at this point descends through the hollow plunger and punches a hole through the nutblank while the said nut-blankis thus conned within the mold or receptacle j. The punch N next ascends clear of the blank,which is meanwhile held fast upon its bed, and is immediately followed by the hollow plunger N.

The next operation of the machine is to transfer the blank while remaining in the receptacle j to a new position and between a shearing-die, P, and a punch or plunger, Q, as shown in Fig. 5. This is effected by the movement of the sliding bar J toward the left, looking at Fig. l, and is accomplished by the effect of the inclined slot m, as the sliding plate M, of which it forms a part, is moved vertically upward by the cam G3 on the shaft C.

yIt only remains to expel the nut-blank from the receptacle j' and pass it through a shear- Aing-die for finally finishing it. To effect this the punch or plunger Q, fitted to work in a vertical plane in suitable slides, as shown, and actuated by the cam C4 on the cam-shaft C, is made to ascend and force out the nut-blankfrom the receptacle j. The movement of the said punch Q continues through the receptacle j', and, carrying the blank on its end, forces the blank through the shearing-die P, which is permanently located in the same vertical plane as the said punch and receptacle, as shown in Fig. 5, into` an aperture or opening, p, from whence it can be discharged by a clearinga rod, p', or other convenient means, to a de;

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pository for the finished work. The operation of passing the nut-blank through the shearingdie P turns the faces and angles of the blank and finishes the same.

I have described the several operations involved in making a finished nut-blank V,from a bar of metal as performed in consecutive order. It is obvious, however, that two or more of these operations may be performed on some nut-blanks while other operations are being performed on other blanks. Changes in the machine to perform such operations are within the range of capacity of skilled constructers of machinery. y

What I claim as my invention, and desire to secure by Letters Patent, isp l. The combination, substantially as before set forth, of the clamp to hold the bar of stock under lateral pressure, the punch and die for punching the blank from the bar, the molds for receiving the blank from the punch, and the crowning-die for forming the top of the nut-blank while the punch is serving as an anvil for the support of the blank, the whole combined by suitable connectin g mechanism.

2. The combination, substantially as before set forth, ofthe clamp, the punch and die, and the mold for supporting the nut-blank on all sides while its top face is being crowned or shaped under pressure by means of a suitable Y die.

ond receptacle to support the nut-blank While in the second receptacle, and the punch for punching the central hole iu the nut-blank.

6. The combination, substantially as before set forth, of the movable carrier containing the'second receptacle for the nut-blank, the plunger for expelling the nut-blank from such receptacle, and the shearing-die for trimming the blank as it is being expelled.

7. The combination, substantially as before set forth, of the following mechanical organisms for making nut-blanks from cold bars of metal, viz: mechanism for clamping the bar of stock laterally, mechanism for punching a uut-blank from such bar and transferring the blank to a mold for supporting it on all sides, mechanism for crowning the top of the nuthlank, mechanism for transferring the nutblank to a new position, mechanism for bringing into alignment with the mold a second receptacle for the nut-blank, mechanism for transferringthe nut-blank tosuch second receptacle and seating it, mechanism for punching a hole through the nut-blank, mechanism for transferring the blank to another new position, and mechanism for expelling the nutblank and trimming its edges, all said mechanisms being substantially as specified, and co-operatin g together as described.

' W. E. WARD.

Witnesses EDsoN SALISBURY JONES, W. H. THURs'roN.