US514147A - Swaging-machine - Google Patents

Description

(No Model.) 2 sheets-sheet 1. A. I. JACOBS.

l SWAGING MACHINE. N0. 514,147. f Patented Feb. 6, 1894.

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, SWAGING MACHINE. Y

'110. 514,147. Patented Feb. 6, 1894.

UNITED 'STATES PATENT OFFICE.

ARTHURAI. JACOBS, OF HARTFORD, CONNECTICUT, ASSIGN OR TO THE POPE MANUFACTURING COMPANY, OF-` BOSTON, MASSACHUSETTS.

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SPECIFICATION forming part of Letters Patent No. 51 4,147, dated February 6, 1894. l Y Application led September 5, 1.892. Serial No. 445,110. (No model.)

To all whom it may concern.'

Be it known that I, ARTHUR I. JACOBS, of Hartford, in the county of Hartford and State OfCQnnecticut, have invented certain new and useful Improvements in Swaging-Machines, of which the following is a full, clear,

y and with slight wear of the operative parts.

section to show construction.

To this end myinvention consists in the details of theseveral parts making up the machine as a'whole and in thecombination of such parts as more particularly hereinafter described and pointed out in the claims.

Referring to the drawings: Figure 1 is a detail front View of the head of the machine with part of the face plate broken away to show construction. Fig. 2 is a detail end view of the head with parts broken away in central Fig. 3 is a detail topor plan viewV of the machine withl parts broken away. Fig. 4 is a detail side view of the machine with parts broken away. Fig. 5 is a detail View in elevation of part of therear end of the machine.

In the accompanying drawings the lettera denotes the headof the swaging machine that is mounted on any suitable stand or support b inline with a standard c, a Yshaft d extending from the head to the standard and supported in suitable bearings. The guide rods e e extend lengthwise between these partsa and o and serve to make up part of the frame of the machine on which certain operative elements are supported." Fast to the shaft d is a pulley d by means of which the shaft is driven and a pulley cl2 connected by a belt f to a pulley d3 serves as a means of transmitting the rotary movement of the shaft d toa sleeve to which vthe pulley d3 is secured. This sleevefis splined to a feed screw g. so that mainelement in the feed mechanism by means of which awire h, or other piece of metal, is

ally supported onthe carriage t'.

drawn lengthwise between the dies that are borne inthe head of the machineand a carriage vl secured to the end of the feed screw is supported on the guide rods e e. On the endof the feed screw beyond th'e'carriage is a clamp j composed preferably of the jaws j jz having levers extending back with inturned ends arranged to make contact with the wedge js that has a sloping or cam surface and is connected to the wedge lever 7c that is pivot- By swinging the lever forward and back the jaws of the clamp may be opened and closed. With the parts in position shown in the drawings the clamp is holding the end of the spoke or wire h.' A spring j4 interposed between the end of the wedge ja and a shoulder back of the head of the clamp operates to hold theY clamp normally closed upon the work. The carriage e is secured to the feed screw by means that permit the latter to rotate freely in the socket through which it passes, but to move the carriage lengthwise with the lengthwise feeding movement of the screw. This lengthwise movement of the feed screw is eected by means of a nut Z that is fast to a part of the lever t and is mutilated or cut away on one side so as to permit it to belifted out of or thrown into contact with the feed screw when desired. A spring latch m is pivotally secured to' the standard 'cwith its upper end held normally in a position that adapts the hooked end of the latch to engage the lug Z2 on the side of the lever whenever the latter is thrown downward so as to carry the nut into operative contact with the feed screw. This latch m is pivoted on a pin fast in the standard cand a spring m coiled about the pinserves to hold the latchin position to engage and hold the luglz. Thislatchmis tripped automatically by the movement of the parts whenever the movement of the carriage is arrested bythe stop deviceithat consists of a collar adj ustablysecured to the guide rod 'e'. The levert is mounted on the guide rod e and held between an adjustable collar e2 and a spring e3, the latter being located between one side of the lever andthe nearest face of the standard. When the sliding movement of the carriage e' is arrested and the rotary movement IOC of the shaft g continued the lever Z will be drawn toward the standard and will pull the lug Z2 out from beneath the hook on the latch 'm and this allows the lever Z to be thrown up by the recoil of the spring Z4 and thus carry the nut out of engagement with the feed screw and stop its lengthwise movement. As soon as the nut is thus thrown out of engagement with the feed screw a counterpoise n acting 1o through a flexible connection n that passes over a pulley n2 on the frame of the machine and is connected to the carriage or other part fast to the feed screw, operates to draw it forward so as to carry the clamp closely against the back of the head a in position to receive the end of a wire that is thrust between the dies.

The swaging mechanism proper comprises dies 1 and 2 supported in sockets in the head 2o and having their operating faces turned toward each other. The dies are held in place by a face plate 3 that is secured to the head as by means of screws. The dies as shown are made reversible with operative parts on z5 either end and with followers 4 and 5 interposed between the dies and the hammers on one sideV and a toggle on the other.

On the end of the shaft d a disk 6 is scoured so that it turns with the shaft, and on 3o this disk, that is located in a socket in the head, is supported a series of hammer rolls 7. These rolls are of a number sufficient to enable each two of the rolls to be located on diametrically opposite sides of a loosely mounted central roll S. The socket 9 is of a diameter that will permit the rolls to be loosely arranged within the socket when lying edge to edge. The rolls are loosely supported on pins 10. They are held in place by means of 4o a cover plate 11 secured in place by screws or other convenient fastening means.

In a position diametrically opposite to the dies or the follower there is arranged an abutment 12 with a bearing surface locatedin the line of movement of the rolls so that when one of the rolls encounters the abutment the roll diametrically opposite encounters the end of the follower (or of the die if the follower is not used) and forces the die downward upon 5o the piece of metal held beneath its working face.

The disk 6 is turned with considerable rapidity and the rolls 7 are held outward by centrifugal force and in rolling contact with the wall of the socket that thus causes the rolls to turn so as to present each time a new surface to the abutment or to the end of the die. This arrangement of the parts insures a greater durability of the rollers.

The dies are rendered adjustable toward and from each other by supporting the lower die on a cam 13 formed on the surface of a shaft 11 that extends through a socket in the lower part of the head and is provided with 6 5 a lever 15 by means of which this shaft may be rocked.

The toggle 16 interposed between the cam on the shaftand the under side of the die or of the follower serves as the means of translating the rocking movement of the shaft into a rectilinear movement of the die. The weight of the lever tends to turn the shaft 14 so as to drop the lower die, the dies being held close together only when the arm 17 on the outer end of the shaft is held by the trip 18 that is a bell crank lever pivoted to the side of the head.

The end of the arm 17 in the form shown rests in a notch or socket in the outer end of the trip 18 so that as soon as this trip is rocked by means of the rod 1J the arm 17 is released and the dies separate by the rocking movement of the shaft 14 due to the weight of the lever 15, or equivalent device.

The die se arating mechanism is connected to the lever carrying the half nut which en gages with the feed screw by means of a rod p so as to provide for the automatic release of the dies as soon as the feed screw has reached the end of its run. The rotary movement of the feed screw g causes the lever Z to move toward the standard as described as soon as the movement of the carriage i away from the dies is arrested, and this sliding movement of the lever Z toward the dies pushes the rod p and rocks the lever 18 to which it is connected. This rocking movement of the lever lifts the outer end of the arm 18 out of engagement with the arm 17 and permits the rocking movement of the shaft which allows the dies to separate automatically as hereinbefore described.

The abutment 12 that has been described is made of a material much harder and of greater durability than that of which the head is composed and it is preferably used for the purpose of increasing the wear and affording a more durable backing piece to sustain the force of the blow, the whole of which comes on the rolls and not upon the pins that support them. It is not essential that the abutment be used nor that it should project into the path of movement of the rollers as its ofce can be performed by providing a hardened bearing surface in the substance of the head or by lining the whole socket with a ring of durable material as hardened steel.

I claim as my invention- 1. In combination in a swaging machine a head having a roll socket, a shaft supporting a loosely mounted central roll within said socket, a series of loosely mounted hammer rolls arranged diametrically opposite each other on opposite sides of the central roll and with their periphery in rolling contact with the wall of said socket, and a reciprocating die having a part projecting into the path of movement of the hammer rolls, all substantially as described.

2. In combination in a swaging machine the head having a socket, a disk located in the socket and borne on a rotary shaft, a series of hammer rolls loosely mounted on the face of the disk on central supporting pins and ar IOO IIO

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ranged diametrcally opposite each other on opposite sides of a loosely mounted cent-ral roller, and a reciprocating die arranged with an end projecting into the path of movement of the rollers, all substantially as described.

3. In combination in a swaging machine a head having a socket, a disk arranged within v -path of 4movement of the hammer rolls and the cover plate secured to the head, all substantially as described.

4. In combination in a swaging machine the dies and percussive devices for operating them, the rotary and reciprocating feed screw bearing on its inner end a clamp, the clamp operating mechanism, the nut removably connected to the feed screw, the trip mechanism comprising the spring 'latch with a hooked end engaging a lug on the lever that supports the nut, the movable lever, the spring operating to hold the lever in. engagement with the latch, the carriage borne onA the feed screw and the stop device for arresting the movement of the carriage, all substantially as described.

5. In a swaging machine in combination with reciprocating dies,` the die operating mechanism as described, the rock shaft bearing the cam and supporting the lower die, the trip arm borne on the rock shaft and the catch connected to the feed screw releasing mechanism whereby the dies are automatically separated at a predetermined time in the operation of the machine, all substantially as described.

6. In a swaging machine in combination with the reciprocating dies, the die supporting and separating mechanism as described, the die operating mechanism described, means for drawing the Wire between the dies while they are in operation, the Wire feed mechanism and the within described trip and stop mechanisms, all substantially as described.

ARTHUR I. JACOBS.

Witnesses:

CHAs. L. BURDETT, Jos. A. CANTIN.

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