US590451A

US590451A - childs

Info

Publication number: US590451A
Authority: US
Publication date: 1897-09-21
Anticipated expiration: 1914-09-21

Description

(No Model.) 4 Sheets-Sheet 1.

E. GHILDS & W. SANGSTER.

TOE GALK MACHINE.

No. 590,451. Patented Sept. 21,1897.

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(No Model.) 4 Sheets-Sheet 2.

E. OHILDS & W. SANGSTER.

TOE GALK MACHINE.

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E. CHILD S & W. SANGSTER. TOBGALK MACHINE.

No. 590,451. Patented Sept. 21,1897. I! I j WITN E5555- 'INVENTEIRS; HWMJW. E

(No Model.) 4 Sheets-Sheet 4.

E. CHILDS & W. SANGSTER.

TOE OALK MACHINE.

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UNITED STATES PATENT OFFICE.

EUGENE OI-IILDS AND W'ILLIAM SANGSTER, OF BOSTON, MASSACHUSETTS, ASSIGNORS TO FRANKLIN W. PITCHER, OF SAME PLACE.

TOE-CALK MACHIN E.

SPECIFICATION forming part of Letters Patent No. 590,451, dated September 21, 1897.

Application filed January 31, 1896. Serial No. 577,499. (No model.)

[ all whom it may concern:

Be it known that we, EUGENE CHILDS and XVILLIAM SANGSTER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Toe-Call: Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of this invention is to provide an improved mechanism for forming from a continuous metal bar spurred toe-calks com plete and in readiness for attachment to the red-hot horseshoe.

It is well known to those skilled in the art to which this invention relates that the short piece of steel which constitutes the toe-call; is provided with a lateral spur at one end which is driven into the heated shoe and serves to l1old the calk in its proper place until the call: and shoe are welded together.

Our invention is in the nature of an improvement upon that set forth in the United States Patent No. 508,544, granted November 14, 1893, to T. B. Huestis, for a machine for making toe-calks for horseshoes.

One feature of our invention relates to the anvil-block, which has a defined ledge for the calk-blank and is recessed to receive the stationary cutting-die, and the reversible anvil having on each side a plurality of cutting or spur-forming edges.

Another feature is a pivoted rest or support for the red-hot end of the metal bar from which the calks are being formed, such pivot permitting the support to be swung out of the way of its pincer-s when the bar has become much shortened.

Other novel features include an adjustable stop or gage adapted to regulate the precise length of metal to be cut off for a calk and capable of being turned back when access to the dies is desired, and also a push-ofi device working through the anvil-block against the side of the completed calk to positively dislodge it in readiness for the next one.

In the drawings Figure l is a front view of the machine, Fig. 2 a' left end elevation thereof, and Fig. 3 a top plan. Figs. 4 and 5 are transverse and longitudinal sections on the lines 4 4 and 5 5 of Fig. 3. Fig. 6 is a perspective view of the anvil-block, showing the stationary cutter and reversible anvil.

Figs. 7, S, and 9 are elevations of the cams which actuate the dies. which press out the metal for the spur and shape it by successive blows.

A represents the frame of the machine, A the driving-shaft, and a the gearing by which power is communicated to the cam-shaft B, mounted in rigid hangers B and having a series of cams b b b b 1) 12 These cams actuate the pivoted levers respectively bearing on them, and thereby operate the tools or tip'of the heated bar and to form a spur thereon, as herein explained.

The red-hot end of the bar enters the machine from the left in Figs. 1 and 3 and from the right in Fig. 5, as indicated in dotted lines. Its forward portion rests upon the ledge c of the anvil-block C, Fig. 6, and it is held firmly thereon during the severing and spur-forming operations, as best shown in Fig. 4. The cam 17 acts on lever D, centrally pivoted, and causes the clamp D, which is held adjustably in the recessed head of said lever, to press steadily'upon the heated bar, here shown of triangular form. The adj usting-screws cl, threaded through the walls of such recessed head, permit the accurate setting of the clamp and the firm holding of the calk-blank during the severing and spurforming operations. A spring d keeps the friction-roll of the lever D closely pressed upon its cam and tends to release the bar.

The reverse position of the clamping mechanism is shown in Fig. 2, the cam having turned so as to withdraw the clamp D aslight distance, enabling the calk to be removed and the heated bar to be again fed forward by the operator. 7

The anvil-block O is mounted upon an upright E of the frame and is fixed firmly thereon by set-screws or the like. The anvil O is a rectangular die located in a corresponding recess at the end of the ledge c, Fig. 6, and held firmly in position. It is of hardened steel and is reversible, so as to bring its eight to permit reversal, when desired. The wear comes principally along the angle where the outer face and upper edge meet, and it is a great advantage to renew the anvil by giving it a quarter-turn when required.

dies to sever a calk length of metal from the lateral edges into wear successivelythat is,

At the opposite end of the ledge c the stationary cutting-die F is rigidly held and may be reversible, if desired; but as the forgingblows to which ,the anvil is subjected do not come upon said die the wear upon it is not so serious. The movable cutter F is mounted upon the pivoted lever f, actuated by the cam 12 to sever from the clamped bara calk length of the heated metal.

Figs. 2, 3, and 5 represent afeature of this invention consisting of a movable support Gr for the heated end of the bar. Such support retains its position until the bar, which is gradually advanced through it, becomes quite short and too hot to be held in the hands. Said support then needs to be removed out of the way of the pincers. \Ve therefore pivot it or otherwise movably attach it on the outer face of the upright E, which is provided with two projecting rests g, one to support it when in use and the other to hold it when swung out of the way. If the support were rigid or immovable, a foot or two of each bar would be wasted, as the pincers could not approach the anvil. The adjustable pivoted stop,which regulates the length of the calk by stopping the advance movement of the bar, is best shown in Fig. 5. It consists of astout standard H, having a horizontal arm H, with a rigid depending finger h, the tip of which extends to the side of the anvil O and stops the advancing bar at the properpoint. The arm 11' is threaded and furnished with a checknut each side of the standard through which it passes, so that an exact adjustment is secured. The foot of the standard extends inwardly toward the anvil and is pivoted at the heel at 1'- between two cars I, so that the de vice maybe turned back out of the way when access to the anvil is desired. A set-screw I holds the parts in operative position at other times.

The spur is formed on the forward end of the bar or call: section by two dies j, which act simultaneously on opposite sides of the extreme tip of the bar, and byanother die 70, which hammers the spur (during its formation) against the side of the anvil, acting thus in a plane at right angles to the first two.

These two punch. outwardly and draw down wardly without detaching so much of the redhot metal as is necessary to form the spur by repeated blows, given by the action of cams b and 12 upon their levers J and J alternating with'the blows given by die has its lever K is actuated by the face-cam b. The increasing size of the swells on cam b, Fig. 7, causes its die to advance somewhat farther with each successive blow, thus gradually elongating the spur.

After the calk is finished by the completion of its spur the push-off devices act to dislodge it from the ledge c of the anvil, and it drops down through the open center of the bed of the machine and is carried by gravity down a slide or incline (not shown) and allowed to cool. The push-off apparatus (shown in Figs. 1, 2, 3, and 4) forms a part of this invention. Two reciprocating rods L- are shown, one of which works through the anvil-block O and the other close beside its spur-forming end. A light standard 1 supports the intermediate portion of these rods, and a surrounding coiled spring L is interposed between a nut adjacent to such standard and the upright E of the frame. These rods are pressed suddenly forward at the proper moment to dislodge the calk by the action of cam b on the vibrating arm M M, pivoted on shaft m. The springs L push back the rods L and restore the parts to the position shown in Figs. 2 and a. A stop N limits this rearward movement. Ad j ustiugscrews are shown at the junction of rods L and lever M.

e claim as our joint inventio11- 1. In a toe-call: machine, the recessed anvil-block, having a calk-forming ledge, and

the cutter and reversible anvil for cutting and forging, secured to said block, in combination with aclamp for holding fast the heated end of the bar, movable'dies for forming a spur upon its forward end, and a cutting-die for severing the calk, substantially as set forth.

2. In a toe-calk machine, the anvil-block, the clamp serving to hold the heated bar thereon, the spur-forging dies and the cutters, in combination with a movable support for the hot end of the bar before and after the calk is severed, such support being withdrawn out of the way of the pincers when required, substantially as set forth.

3. In a toe-calk machine, the anvil-block, the clamp and bar-support, and the forgingdies and cutters, in combination with an adj ustable pivoted stop consisting of a normally vertical standard pivoted to the frame, an adjustable horizontal arm extending from said standard toward the dies, and a vertical finger depending from said arm to engage the end of the stock, substantially as set forth.

4. In a toe-calk machine, the anvil, stop,

clamp, forging-dies and cutters, in combinasurrounding said rods, the standard 1 serving to support said rods and control said spr1ng,.

and with the vibrating lever M m M and its cam 12 serving to give a quick stroke to the push-01f rods, the stop N limiting the rearward movement of the lever, substantially as set forth.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, on this 20th day of November, A. D. 1895.

EUGENE oHiLDs. WILLIAM SANGSTER.

Vitnesses:

A. H. SPENCER, J OSEPH J. DURHAM.