USRE6113E - Improvement in dies for manufacturing ox-shoes - Google Patents

Description

. s. PARKER,

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UNITED STATES PATENT OFFICE.,

BODOIN S. PARKER, OF GREENFIELD, MASSACHSETTS.

IMPROVEMENT IN DlES FOR MANUFACTURlNG OX-SHOES.

Specification forming part of Letters Patent No. 123,927, dated February 20, 1872; reissue No. 6,1 13, dated November 3, 1874; application filed December 22, 1873.

To all whom it may concern Be it known that I, Bownonv S. PARKER, of Greenfied, in the county of Franklin and State of Massachusetts, have invented a new and useful Improvement in Dies for the Manufacture of Orr-Shoes; and I do hereby declare the following to be a clear, full, and eX- act description of the same, reference being had to the accompanying drawing, in which- Figure 1 is a perspective view of the dies which I have devised for forging 0X-shoes, mounted in a drop-press; Fig. 2, elevation,face of roughing female die; Fig. 3, elevation, face of roughing male die; Fig. 4, plan, face of iinishing female die; Fig. 5, plan, face of Iinishing male die.

My invention relates to an improvement in manufacturing oX-shoes; and it consists in dies suitably arranged and adjusted to swage the blank into form, and finish it under a droppress, triphammer, or steam-hammer.

On a single pair of blocks, A B, I form two male and two female dies, as shown particularly in Fig. 1. The dies C C are thev rough shaping-dies. They are arranged upon the sides of the respective blocks A B, in order to eect a convenient application of a blow edgewise upon the rough blank, so as to bend the same to the curvature of a finished oX shoe. The die C is composed of a ledge, c, on the front side of block B, having its upper surface curved upward in its middle portion, corresponding somewhat to the curvature of the inner edgeof an oX-shoe; and the die C is formed by a plate, e, placed along the front side of the die-block A, and projected downward below the lower face of said block to a distance sufficiently far to meet properly the female die C. The edge of the plate e, which composes the male die, is curved concave to the die C, and exactly to correspond to the curvature of the outer edge of the oX-shoe. In order to correct any slight deviation from truth of stroke, consequent upon looseness of the guides or other causes, the guide-lip fis placed on the outer side of the male die C' and projects downward therefrom, so as to strike into the recess g on the outer side of the die C. IThe guide-lip fis narrower at its point than at its base, and is also chamfered from the back, so as to reduce the point in thickness. It is then sure to enter thc recess gand bring the dies to correct positions before the stroke is ended. The guide-lip j' will also force the blank back into the die, if, at the time of stroke, it should not be seated with complete accuracy. The die D is cut into the upper face of the block B, and is designed to represent in reverse the exact configuration of the lower face of an oX-shoe. At eachend of said die there may be depressions d, into which the metal of the blank will be forced, to form the calks of the shoe, and a projecting rib, h, along the outer edge, and parallel thereto, will forni the grooves in which the nail-heads will be seated when the shoe is secured in place upon the foot of the ox. At the expanded part i the shoe is made thin, and only serves as a protectionto the soft part of the hoof. die D is mainly the ilat surface of the block A, A slight convex projection, k, is preferably made at a pomt corresponding with the thin portion fi, to make the shoe slightly concave `on its upper surface at that point, because it is not desirable that it should press upon the foot, except around its horny edge. The blanks are cut from bars ofsuitable dimensions, and when heated are placed in the die C to be bent edgewise, roughly, to the form of the oX-shoe, and, when so bent, the blank is laid in die D, and, being struck by die D', the shoe is formed and finished.

But a single heating ofthe blank is required, and with the dies as described, operated by a drop, steam, or trip-hammer, shoes may be produced as perfect inevery respectas those forged by hand, and with much greater uniformity as to size.

Dies have heretofore been used in making onshoes. The patent of H. Colburn of April 26, 1870, describes a sort of dies so applied for forming the under surface, the upper surface being shaped by the flat face of the hammer without the depression made by the projection 7c on the male die. In the female die, too, there are the following distinctions: No recesses are left for calks as in my dies. It is open at the heel, and therefore the iron is not as well compressed and shaped as in mine, where it is forced to ll a box, and the part that forms the web of the shoe, as well as the part exterior to the outer edge of the shoe,

The male by hand.

. ca1ks,`which I have provided for.

rests on springs and plays up and down around a curved upright ange sharpened and pre-lr sentin'g upward points at'the top to produce the fullering and nail-holes. This is extremely objectionable in construction, as in the use of dies the iron throwsout feathers along any line of joining, and'would Wedge, and the full-j ering-iiange be very liable to break.

In oX-shoes calks may be turned on theshoe, While in horseshoes this must be done It is important, therefore, to turn the calks in the dies, par ticularly the heel- When it is necessary to cut or shape a size of ox-shoe to fit a peculiar foot, in most cases lateral shaping is all that is necessary; butlif cutting is required, it is done at the toe, and not at the heel, as in horses. These particulars I consider essential, and have made them subjects of my claims.

Having described my invention, what I claim as new 1s l. The sWaging-dies C C D D', for forming ox-shoes, substantially as described.

2. The male die D', With its convex projec- -tion k, substantially as and for the purpose described.

3. The female die D, formed with depressions for calks cl d at the ends ofthe intaglio, and with rib 7L, substantially as described.

Y BOWDOIN S. PARKER. Witnesses:

ASHLEY HOLLAND, AUsrIN DE'WOLF.

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