US250865A - Gael wittenstbom - Google Patents

Description

Patented Dec. 13,1881;

INVENTOR f( ATTORNEY WITNESSES N1 PETERS "Kala-Lithographer, Wnshinglon, o. c.

UNITED STATES GFFICE.

PATENT MOLD FOR CASTING HORSESHOES.

SPECIFICATION forming part of Letters Patent No. 250,865, dated December 13, 1881,

Application filed April 14, 1881. (No model.) Patented in England July 15, 1880, in France July 15, 1880, and in Germany January 20, 1881.

To all whom it may concern:

Be it known that I, CARL WrT'rENsrRoM, a citizen of Stockholm, in Sweden, have invented a certain new and useful Improvement in Molds for Casting Horseshoes, of which the following is a specification.

This invention relates to the manufacture of horseshoes.

The invention consists in novel devices for connecting together the two parts forming the mold and attaching the same to the circumference of a turn-table, whereby the mold-sections are readily opened and the shoes discharged quickly from them, and whereby the process of movinga number of shoe-molds up to and from the pouring-nozzle of a Martins, Bessemer, or other like furnace is greatly facilitated, as will be hereinafter explained.

In the accompanying drawings, Figures 1 to 5, inclusive, represent one of my improved molds for casting horseshoes with two hind hooks or calks, Fig. 1. being a plan view, Fig. 2 a side elevation, Fig. 3 a bottom view, Fig. 4 an end elevation, and Fig. 5 a vertical transverse section on line 00 :0, Fig. 1. Figs. 6, 7, and 8 represent, respectively, a side view, end View, and top view of a mold held together during the casting by a pair of tongs or hinged levers; and Figs. 9, l0, and 11 represent a front elevation, an end elevation, and a top view of amold attached to a turn-table or movable disk for being successively moved under the tapping-hole of the ladle or furnace.

Similar letters of reference indicate correponding parts.-

The mold, as shown in the drawings-,is divided longitudinally in halves c and d, of which the one, d, incloses the under side and the outer sides of the shoe, and the other, 0, its upper side as far as the hooks or calks, for which deeper incisions are provided.

0 e are plugs or cores, of malleable iron or any other suitable material, which are fastened in the half (Z of the mold, in order to form the holes for the horse-nails.

fis a stud or plunger, which goes through the same half-mold, and has its head fitted or reeessedinto the bottom ofthe mold. Aspring, g, holds it in its place. By a blow upon its plunger the shoe can easily be detached from the mold after casting. Such a plunger may also be placed in the other half-mold, if itshou'ld be found necessary.

The inlet-hole or runner h is in the upper end of the mold, partly out out in each of the halves, so that the shoe may be cast in a vertical position. By this arrangement the mold can easily be opened and the shoe removed after the casting is made.

If the shoe is to be cast with toe-hooks and toe-caps, the mold remains unchanged, except that indentations for the same are cut out in each half-mold. (See Figs. 9, 10, and 11.) For shoes without calks the general arrangement remains substantially the same, but is considably simpler, as will be easily understood. The inlet or runner h can be placed either at the fore or back part of the shoe; but I prefer to cast shoes without toe-hooks and toe-caps in the manner shown in Figs. 1 to 5that is, with the runner at the toe-and shoes with such toe hooks and caps, as shown in Figs. 9, 10, and 11, with the runners at the calks. Several shoe-molds may be combined; but I prefer single molds. I

The half-molds can be held together by a clip, a, and a wedge or cotter, 1), Figs. 2 to 5, or by a pair of tongs or hinged levers, M, Figs. 6 to 8, in which case the half-molds must have projecting lugs It for connecting the mold with the tongs.

Figs. 9, 10, and 11 show my improved mode of connecting together the two parts of the mold and attaching the same to the circumference of a movable turn-table or frame, 0, so that the molds may be successively brought under the tapping-hole of a ladle, or of a Martin or Bessemer furnace, filled with metal, moved away, emptied, and cooled. This mold consists of the two parts d c, hinged together at l, and connected by ears and a removable pin or eyebolt to the frame 0. The hingelis connected to a bracket, A, fixed into the periphery of the frame 0. At the end of the outer half of the mold, opposite the hinge Z, an ear, 0, is formed on this half, to which a bent arm, D, is pivoted, on the vertical portion of which is an eccentric, a, that is used to act on a lock, an, attached to a hook, E, fixed to frame 0, and draw tightly together the mold-sections. By simply turning the handle of arm D outward the lock m can be detached from hook E and the outer half of the mold can be swung away from the inner half and the cast shoe discharged. The mold in these figures has three plungers, f f f, situated in the half-mold d, for loosening the shoe, which plungers are united by a plate, 1), in order to be actuated at the same time. After the "casting is made and set it must be removed as soon as possible to prevent the shoe from cracking by shrinking, as well as to avoid too great heating of the mold. The shoes are consequently taken out almost in a white heat, and no after heating or annealing is required if they are directly placed into dry sand and allowed to cool slowly. The completion of the work consists only in the removing of the feeding head or git, and in dressing the seams that appear in the castin For the preservation of the molds it is not only necessary, as above stated, not to heat them too much during the process of casting, but also to cool them with water and oil after every two or three operations. When the molds are used fixed to a turn-table, as in Figs. 9, 10, and 11', this cooling can be most easily effected by the use of a strong current of air, through which they may be made to pass after every operation. In order that the mold may easily part from the casting and give to it a smooth surface, it is also necessary at every third or fourth casting to rub over the inside of the mold with thin oil, which, after burning, leavesacovering of soot; or they maybe smoked with a burning pitch-torch.

Having thus described my invention,I claim as new and desire to secure by Letters Patent- The combination, in a horseshoe two-part metal mold, of the hinge, the bracket, the lock, the hook, the eccentric, and the bolt or pin connecting the mold to the movable frame, substantially as described.

In testimony that 1 claim the foregoing as my invention I have signed my name, in presegge of two witnesses, this 23d day of March, 1

CARL WITTENSTROM.

Witnesses:

LORENTZ ALBERT GROTH, HENRY THOMAS DA EY.

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