US358426A - Machine for rolling horseshoe-bars - Google Patents

Description

n e h S .w uw e h s 2 R. E D L E H C ml. A.. B Tun. E u. d 0 M o m MACHINE FOR ROLLING HORSESHOE BARS.. No. 358,426.

Patented Mar'. l1, 1887.

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N. PETERS. PilohrLilhcgmphsr. Washntn. D. C.

2 Sheets- Sheet 2.

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. H. J. BT'E..D1-IBM4 l MACHINE FOR'ROLLING HORSESHOEBARS.

No. 358,426. Patente-d Mar. l, 1887.

UNITED STATES PATENT Orricxn d HAZEN J. VBATOHELDER, OF NORIVIOH, VERMONT, ASSIGNOR TO THE VICTOR HORSE SHOE COMPANY, OF CONCORD, NEW HAMPSHIRE.

" MACHINE FOR ROLLING HOFlSESHOE--BARSl SPECIFICATION forming part of Letters Patent No. 358,426, dated March 1, 1887.

Application filed February 27, 1884. Renewed August 5, 1886. Serial No. 210,128. (No model.)

.To @ZZ-whom, #may concern:

Beit known that I, HAZEN J. BATCHELDER, of Norwich, in the county of Windsor and State of Vermont, have invented certain Improvements in Apparatus for Rolling Horseshoe-Bars, of which the following is a specification. s This invention relates to the operation of forming creases and nail cavities or holes by suitable rolls in bars which are intended to be made into horse and mule shoes, said bars beingafterward cutfup into lengths,\vhich are bent into horseshoe form.

Heretofore the entire rolling operation on the bar has been performed by asingle pair of rolls, formed either to make the creases alone (the nail-holes being formed by subsequent operations) or to make both the creases and the nailholes, one roll being provided with creasers, which form the creases, and with dabsf7 or punches on said creasers,` which form the nail-holes in the bottoms of or inner portions of the creases, as shown in Letters Patent of the United States granted to H. J. Batchelder, November 30, 1880, No. 234,942. Owing to the necessary depth of said creasers and length of the dabs and the strain necessarily sustained by them in making their impressions in the bar, they are liable to breakage, and it has been found impracticable to punch the bar entirely through, the dabs simply-formin g cavities'in the shoe, the bottoms of which are separated from the opposite surface of the shoe bywebs of metal, so that a subsequent'punehing operation is required to complete the nailholes when the bars are cold or after the shoe has been formed.

My invention is based upon the discovery that if the bars are first creased by one pairof rolls formed only to make grooves about half through the thickness of the bar, and subsequently punched by another pair of rolls formed only to make the nailholes from the bottoms of said creases, the labor is so divided that the strain on the creasers and the punches is materially reduced, liability of breakage or fracture lessened, and the nail holes can, if

without regard to the distance between the crease-forming and nail-hole-forming rolls when the creases are continuous from end to end-of the bar; butwhen said creases are interrupted or sectional, so that in the completed shoe the creases are located only at the sides and not at the toe, it is evident that if the bar be acted on by the crease-forming rolls during one pass, and then removed and acted on bythe 6C nail-hole-forming rolls during a second pass, there would be a difficulty in bringing the punches or dabs ofthe second pair of rolls to the proper position with relation to the grooves or creases previously formed, for the reason that the bar, entering the rolls when they are running at speed, cannot be properly introduced if independent of the rst pair of rolls.

To obviate this objection I have made pro,- vision for enabling both pairs of rolls to act on the bar during a single pass of the latter, the bar being grasped by the second pair of rolls before it is released by the irst pair, the two pairs of rolls being geared together, so that they cannot rotate independently, but 7 5 each pair must maintain a definite rate of Vmovement with relation to the other pair.

The coincidence of the dabs of the nail-holeforlning rolls with the interrupted creases formed by the preceding rolls is thus insured. 8O I also provide means for adjusting the distance between the two pairs of rolls without varying their operative connection, so as to adapt the rolls to the formation of longer or shorter blanks, all of which I will now proceed to describe.

Of the accompanying drawings, forming a. part of this specifi-cation, Figure l represents a longitudinal-vertical' section of a rolling mechanism embodying my invention. Fig. T no represents a side elevation of the same. Fig.` 3 represents a top plan view. Figs. 4 and 5 represent, respectively, sectional views of the crease-*forming and nail-hole-forming rolls, showing their operation on the bar.

The same letters of reference indicate the same parts in all the gures.

In the drawings, a b represent the crease or groove forming rolls, one of which, b, has the sectional creasers or dies b b', adapted to form rco creases of the proper length and depth in a bar, c. The other roll, a., has a plain periphery, serving as a bed to support the bar, and two side flanges, c c', which confine the edges of the bar and prevent it from bulging or splaying out under the action of the creasers.

The rolls c b are geared together, and their bearings are supported in a suitable stand or frame, d.

e freprescut the nail-hole-forming rolls, one of which, f, has two gangs or groups of dabs or punches, f', arranged to enter the creases formed in the bar by the creasers t when the bar is properly presented to the rolls c j', and form nail-holes from the bottoms of said creases nearly or quite through the bar to the hoof-bearing surface thereof, as shown in Fig. 5. rlhe roll e is formed substantially like the roll a, above described.

The rolls e f are geared together and their bearings are supported in a stand or frame, g. A drvingshaft, h, having a gear-wheel meshing with a gear on the arbor of thc roll f, drives the rolls e y f. An intermediate gearwheel, i, meshing with the gear-wheel or arbor fa of roll f and a similar wheel on the arbor ba of roll b, communicates motion from the second to the first pair of rolls. The gear on the arbor of roll b is larger than that on roll f, so that the rolls c f are rotated more rap idly than the rolls a b, to compensate for the elongation or drawing` of the bar caused by the reduction of its cross-section by the rolls ab.

The second pair of rolls is placed so near the first pair that the bar will be grasped by the second pair before it is released by the first. It will be seen, therefore, that if the second pair of' rolls be properly adjusted, so that their punches properly enter the i creases formed by the irst pair, there can be no failure of the dabs or punches to coincide with the creases, the connection of the two pairs of rolls by the intermediate gear preventing any disarrangement or independent movement of either pair of rolls. Y

The division between two pairs of rolls of the labor of forming the creases and nail-holes enables the bar to be easily formed without undue strain on either of the impressing-rolls, and also enables the nail-holes to be punched to within one thirty-second or one sixty-fourth of an inch of the hoof-bearing surface, leaving only a thin web or film of metal,which can be easily punched out by hand when the shoe is fitted in the operation of shoeing the animal. An ordinary horseshoe-bar is about f/m three-eighths to one-half of an inch thick, and the creases are from one-fourth to threeeighths of an inch `1n depth. Vhen it is desirable to punch the nail-holes entirely through the bar, leaving no web or film, I make indentations in the roll on the hoof-bearing surface, and coinciding with the points where the dabs or punches enter the bar. The points of the punches emerge into these indentations or dies and form slight bnrrs, which may be subsequently sheared or ground off.

It is obvious that the roll b may be formed to make depressions extending entirely across the har, instead of grooves or creases, without departing from the spirit of my invention, said depressions being interrupted or sectional, so as to leave the requisite thickness of the bar at the toe and heels ofthe completed shoe.

To adapt the two pairs of rolls to form blanks of ditfereut sizes or lengths, I make the frame or stand d adjustablevtoward or from the stand g, so as to decrease or increase the distance between the two pairs of rolls, and thus compensate for any changes which may be made in the sizes of the rolls b f. In order that the operative connection between the two rolls may not be affected by such adjustments, I make the intermediate gear, t', vertically ad `justalole, so that it will connect the gears 0n the arbors of rolls Z) and f when the same are at various distances apart. To this end I support the shaft or arbor k of the intermediate gear, il, in the ends of arms Z Z, which are pivoted upon the arbors b f, and are adapted to be turned on said arbors so as to stand horizontally, as shown in Figs. 1 and 2, when the stands d g are at their maximum separation, or to be inclined downwardly, as shown by dotted lines in Fig. 2, when the stand d is moved toward the stand y. lllhe intermediate gear, i, is thus adjusted vertically in suoli pro portion to the change of distance between the pairs of rolls that it will always remain in gear with the gcarwhecls on the arbors of the rolls af.

The arms Z Z are positively heldin any position to which they may be adjusted by bolts n, secured to the arm Z', and passing through segmental slots o in the arm l, `and through similar slots, p, in the stand g, and provided with clampingmnts, which enable said arms Z Z to be clamped to the stand at various heights.

It is desirable in horseshoes that the outer edge of the hoof-bearing surface should be rounded or beveled to permit filing off the lower edge of the hoot` and to prevent its being chipped or broken off by concussion. I construct the rolls a c so as to impart said shape to the bar by forming fillets r r on said rolls. (See Figs. 4 and 5.)

It is obvious that the bar may be punched bythe top roll, if desired, instead of by the bottom roll. I do not limit myself, however, to forming sectional creases or depressions, since the bar may be creased continuously by the first set of rolls and punched by the second set. In such case, there being no interruption in the crease, the punches would always be in correct position, no matter at what position of the rotation the bar was introduced. Such arrangement would embody my invention so far as the division of labor between the two rolls is concerned.

I claim- 1. An organized machine for rolling horseshoe-bars, composed of the pair of creasing` rolls provided with dies adapted to form creases or equivalent depressions inthe bar,

"and the pair of punching-rolls provided with 'adapted to form nail-'h oies in said creases,when

so arranged that the dies of the one pair shall register with those of the other pair, substantiaiiy as described.

3. The combination of apair of rolls adapted to form creases or equivalent depressions in a bar of iron, a second pair of rolls adapted to form nail-holes, and the connecting-gears, substantialiy as described, whereby independent rotation of either pair of rolls is prevented, as set forth.

4. rIhe combination of a pair of rolls adapted to form creases or equivalent depressions in a bal` of iron, a second. pair of rolls adapted to form nail-holes, an intermediate gear connecting the driven rolls of said pairs, and arms Z Z', supporting said gear and pivoted upon the arbors of said driven rolls, whereby said in termediate gear is adj usted vertically by any variation in the distance between the two pairs of rolls, `as set forth.

5. In a machine for rolling horseshoe-bars, the combination of a roll provided with dies b or f', adapted to enter one side of the bar, and aco-operating roll adapted to bear against the opposite side of the bar and provided with a illet, r, whereby a rounded or beveled edge is formed at the outer margin of the hooffbearing surface of said bar, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 29th day of January, 1884.

HAZEN J. BATCHELDER.

Witnesses:

R. A. PARTRIDGE, L. S. PARTRIDGE.

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