USRE3354E - Improved machine for rolling horseshoe-iron - Google Patents

Description

UNITED STATES PATENT OFFICE.

WILLIAM IV. LEWIS, OF CINCINNATI, OHIO.

IMPROVED MACHINE FOR ROLLING HORSESHOE-IRON.

Specification forming part of Letters Patent No. 22,812, dated February 1, 1859; Reissue No. 3.354, dated March 3U, llclJ.

To aZZ wltom, it muy concern:

Be it known that I, WILLIAM XV. LEWIS, of Cincinnati, Hamilton county, Ohio, have invented certain new and useful Improvements in Machinery for Making Horseshoe-Iron; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figures 1, 6, and 7 are front views showing the rollers at different stages of the operation. Figs. 2 and S are transverse and longitudinal sections of the same. Fig. 3 is a piece ofiron which has passed through the rollers; and Fig. 4.- is an edge view, and Fig. 5 a transverse view, of the saine.

Prior to my invention horse and 0x shoe iron has been produced by machinery consisting of two rollers mounted or dressed with grooves and creasers, or offour rollers properly dressed, for giving configuration to the iron from which the shoes are to be formed; but in these and all prior devices the principle upon which my improvements are founded is overlooked.

\Vhen iron is rolled in a plaingrooved roller in which the cross-section of the groove is a parallclogram, and a creascr is applied during the process of rolling, it is evident that the iron displaced by the ereaser must be forced against the sides of the groove. To accommodate this expansion some play is allowed between the iron and the sides of the groove; or, in other words, the iron does not fit tightly in the groove; but it is evident that if any play be allowed it becomes necessary to guide the iron in sonic way, so as to form the depression for the nails or crease in a line that is exactly parallel with the side of the shoe, as a variation from this parallelism would destroy the workmanship of the manufactured article. For the purpose of obviatingthis diffe cnlty I place an inclined plane in the bottom ofthe groove opposite the creaser. The effect of this is to press the iron toward the opposite side of the groove, where the creaser operates, and to keep it against that side, which thus serves as a guide to preserve the parallelism. The effect is also to make the outer edge of the iron which contains the crease thicker than the inner edge,which is the natural form of the shoe. I also make the bottom of the groove eccentric, so as to make the shoe thicker at the heel than at the toe` and this will be effected although the bar is of uniform thickness when fed to the rolls. because the iron displaced by the creasers in the shallower portion, being unable to escape because of the lateral pressure against the sides, must be forced toward the ends, where it will occupy the full depth of the groove. I place the creasers in the rolls in the form cfa ring where the whole roll is used, or of asemi-ringwhere but half the circumference is employed. In thc latter case I cut the roll radially, so as to remove and replace one side of the roll opposite the creuser. This enables me to remove the creasers when they become Worn or imperfect, or to substitute differentsizes, as may be desired.

In the example of my invention represented in the drawings the rollers are specially adapted to feeding the bar at intervals to the bending machinery patented by me June 28, 1858, shaping it as they do so, and thus dispensing with the vertically-moving dicsin my patented machine above mentioned. The lower roller, B, is perfectly cylindrical, except that it has two separate curved projections, a ,which are struck from the same center. These projections I call the creasersf7 they serving to produce the creases (see g g, Fig. 3,) in the horseshoe iron. The circumference of the roller B is equal to double the length which the piece which forms the shoe has after it has been rolled, and the creasers a a consequently extend nearly halfway round it. The upper roller, A, is cylindrical externally, and contains a groove, b, extending all round. The bottom of the groove on one-half of the circumference of the roller is made eccentric, as shown at b' in Fig. 2, to roll the piece rather thinner in the middle, and gradually thicker toward the ends, and the said eccentric portions have an inclined bottom, as shown at c c, Figs. l and 7, to make the outeredge of the shoe thicker than the inner, and also to guide the iron to the side of the grooves where the creasers are operating,and so make true Work.

The length of the above described half of the circumference of the bottom of the groove b must be equal to the semicircurnference of tho roller il. The dopth and width of tliesovA eral portions ot' this hall' ot' the groove are such as 1o ninke tho shoe ot` tho requisite thickness. The other halt' ol' tho eirounit'or enoey of the bottoni ol' tho groove in this partionlar t'or1n ol'inaehino is eonoontrie and deeper7 as shown at le. l, and wido enough to receive tho lrar troni which tho shoes are to ho unido without gripping' it against the rollrr YIl.

ln the pair ol' rolls represented, it will bo lx readily understood that only ono hali'of tho eirrninl'erenee is operative, the liar not] boing|` gripped by tho halt' b I ot' the groove, and uonsequentl)r not being ted loi-ward. This suspension ot` they operation is l'or the purpostI ot` allowing tho opefirntilgin oil thelaendiny,` apparatus l which is not shown l to take plaire. 'lhe l'ieiulinpv ot one pit-re is pert'orined while the deep part i: lr ot' thil groove is passing the har. 'lfhepieres aller havingl been fornnfd as shown in Figs. I5, l, and .3, inay ho ent oit' by a cutter attached to one ot'tlnrollers. or otherwise suitably applied.

l will relnnrli that the operativo pori ions ot' tho rollers may occupy less than ono-hall' ol' tho circulnl'ereinze; hut the)V nnist ol'eonrse ool copy roi-responding portions oi' hoth rollers.

When the rollers aro not to be used in con neetion with my lnwilling-machine, or aro to he einployrd in rolling the liars into a sories ol' lengths snitablo l'orshoes, tho other halves ot' ihr rolls nro to loro loi-mod likt,` tho operaY tivo portions otx tho rollers deshrihod, both as to thtI ereasrrs, inrlinrd hot t oin l'or thegroove,

and eocent rir. the groove operativo throughout tho entiril circumference; or tho rollers may have eir eulnlerenees Composed ot a continuous Series ot sneh operatiro portions in any number,

l and a liar, al'tor leaving` a pair ot' ordinary rollersnnay lie run without rohoating through a pair ol snrh rollers, and lie subsequentl)V l eut in piet-cs, und torined into shoes hy liendingr in any inannor.

Tho (freasors n rc niay have attnoliod tothein tho punches for punchinglv tho nail-holes; or the holes :nay he punelnld lay a subsequent operation.

What` .l (alain) as in yv inrrntion`r and desire to soeur-o ln' VLetters laLQnt, isf'- Vl. 'lho combination, in n pair ol' rolls, ot

WILLIA )I W. lilfYhs.

si'itnessesz ll. t.. lllli, snip. ll. Fisnnn.

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