US1458648A - Horseshoe calk - Google Patents

Description

June 12, 1923.

- J. H FREEMAN HORSESHOE CALK Filed March 29, 1922 HHHH ATTO R N EV Patented June 12, 1923.

STATES JOSEPH H. FREEMAN, or snroxsnmnx, LEENNSYLVANIA.

HORSIESHOE CALK.

To cZZw/zomit may concern:

Be it known that I, Josnrrr HFFREEMAN, a citizen of the United States, residing at Shickshinny, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Horseshoe Calk, of which the following is a specification.

This invention relates to horseshoe calks and particularly to detachable calks.

able horseshoe calk which may be easily] formed by forging the same singly or in pairs for attachment to the toe of the shoe; the heel of the shoe, of course, receiving single calks, the said calks having expansib'le and contractible tenons for automatically interlocking into peculiarly formed sockets located at the toe and the heel of said shoe, and having beveled or tapering recesses at each side for the receptionof the spaced prongs of a special tool, by means of which the single calkior the double or twin form of calk may be pried fromits seat in the socketsa arranged side by sideand extendshoe.

A full and complete understanding of the invention may be obtained from a consideration of the following detailed description, taken :in connection with the accompanying drawingforming a part of this specification; it being understood that while the drawing shows a practical form of the invention, the latter is not confined to strict conformity with the showing thereof, but may be changed or modified, so long as such changes or modifications mark no material departure from the salient features of the invention, as specifically pointed out in the appended claims.

In the drawing, in which similar reference characters designate corresponding parts throughout the several figures Figure 1 is an inverted plan view of a horseshoe provided with the improved calks; 1 v

The object is to provide a calk to be used PATENT oFFlcE. a

Fig. 2 is a sectional view of the shoe in i the position assumed while in use;

F 1g. 3 1s a transverse. sectional view through the toe of the shoe and showing a pair of spaced toe calks in position therein;

Fig. 4 is a detail perspective View of a single calk applicable for use at the toe or the heel of the shoe and formed with a relatively sharp edge for use in slippery weather; I

Fig. ,5 is a similar view of a calk constructed for use in dry weather;

Fig. 6 is a face view of a double or twin form of calk;

Fig. 7 is a detail elevation of one of the heel portionsof the shoe and showing the method of applying a specialtool forremoving the calk; and I Fig. 8 is a perspective view of the special tool for detaching the calks:

The horseshoel, as illustrated in Fig. 1 of the drawing, may assume any of the shapes in common use, and is preferably provided in each branch or arm of the same with a thickened portion 2 adjacent to the heel ends and on the under side of the shoe, and in like manner the front or toe of the shoe is provided with a'centrally disposed enlargement 3 extending downwardly from the under face of the same, the shoe being straight and flat on itsupperface.

The front or toe'enlargement 3 extends transversely of the central portion of the shoe and is provided with a pair of spaced ing through the shoe, and in like manner the rear terminal of each branch or arm is 1 sockets converge upwardlytowards theupper faceof the shoe soas to form a wedgeshaped seat for the interfitting and locking portions of the calks, as will be described.

At the upper end, each socket is provided, in its longitudinally disposed walls, with opposed outwardly and upwardly flaring walls 5 into which are adapted tobe seated certain portions of the calks for locking the same intopositionon the shoe, and the parts, as thus far described, constitute all of the features necessary to be incorporated into the shoe proper.

Adapted to be seated into any one of the sockets 4 formed at the toe or the heel of the shoe is a calk 6, which may be readily formed by a simple process of forging to comprise a base portion 7 preferably flat across its front face and having its rear edge 8 rounded, as clearly shown in Fig. 4. The base portion is provided with an extension 9, for engagement with the ground, and the said extension may be of the form shown in Fig, 4, wherein the rear side of the extension is concave, as at 10, to provide a relatively sharp contacting surface or edge at its lower end,'to be used in wet or slippery weather; or the said extension may be as wide'as the base portion 7 as indicated at 9 in Fig. 5, the latter form constituting a blunt calk for use in dry weather.

In either form of the calk, the upper end of the body portion 7 is equipped with a normally upstanding tenon 11, rectangular in cross-section, and having its four sides tapering towards the top, in accordance with the walls of the sockets 4, into which the same is adapted to be fitted.

The tenons 11 are arranged, with relation to the base portion 7 with one of their walls substantially coextensive with one wall of the same, thus providing at the opposite side a shoulder 12 which, when the tenon of the calk is fitted in the socket 4, is adapted to bear on the lower face of either the enlargement 2, at the heel-of the shoe, or the enlargement 3 at the toe thereof, as clearly shown in Fig. 2.

The upper end of the tenon is provided on its longitudinal sides with outwardly projecting inclined walls 13, extending from the front to the rear thereof and adapted, when the tenon is fitted into one of the sockets 4, to snugly fit the inclined Walls 5 thereof, with the upper end of the tenon flush with the upper face of the shoe 1. In order to permit of this seating of the enlarged end of the tenon into the seat formed by the walls 5, the tenon is further provided at its upper end with a bifurcation 14, preferably tapered or I V-shaped, extending substantially half the length of said tenon and providing legs capable of being flexed or forced toward each other when driven with suflicient force into the socket, and allowing the enlargements 13 of the tenon to graduallybe-nd toward each other, while under pressure, and to spring or snap outwardly into the seat provided by the tapered walls 5 of the socket, as clearly shown in Fig. 3.

The upper face of the base portion ,7 of the calk at either side of the tenon is oppositely inclined, as indicated at 15, so that when the calk is driven into its seat in the socket, a tapered or wedge-shapedrecess is provided at each side of the calk for the introduction of the spaced tapering prongs 16 of a tool 17 to be used in. detaching the calks from the shoes,as illustrated in Fig. 7. This tool, illustrated in Fig. 8, may consist,- as stated, in the spaced prongs 16 which may be formed integrally'with and project laterally from the shank of the tool, the same being extended to one side to form a convenient handle 18. In applying the tool, it is only necessary to introduce the tapered ends of the prongs into the tapered recesses formed between the inclined walls 15 of the calk and the lower side of the shoe, with one of the prongs at either side, andthis may be done either from the front or the rear of said calk. By hammering on the shank 1 7 of the tool at a point in a line with the calk, it will be seen that the tapered ends 'of the prongs will force the calk longitudinally from its seat, the upper ends of the tenon at either side of the bifurcation 14, being forced to approach each other, through the action of the inclined walls 13 on the corresponding walls 5 of the socket, until the narrow or contracted point of the socket is reached, when the calk may be readily removedv from the shoe.

By reason of the opposite inclination of the axles of the front and rear sockets, the calks, fitted into the same, are correspondingly inclined; that is, the toe calks are directed forwardly and the heel calks rearwardly, to provide a more solid bearing forthe shoe upon the ground.

The toe calks, as stated, may consist of two single calks, or the same may be formed on a single base 7, as indicated in Fig. 6, the tenons in this form being exactly the same as heretofore described and arranged in spaced relation on the said base 7 to be properly fitted into the spaced sockets 4 at'the toe portion of the shoe.

The heel andtoe calks are reversely arranged, as shown in Figs. land 2, so that the bearing edge of the extension 9 is in advance at the toe of the shoe, while those at the heel of the shoe are in the-rear thereof.

From the foregoing, it will be seen that a simple, strong, and durable calk for use at the toe or heel of a horseshoe has been provided, and that the necessary features for receiving and holding said calk in the shoe may be easily formed during the proc ess of manufacturing said shoe, the enlargements thereon having the sockets, being readily produced by a simple forging process, and that the calks themselves may be similarly formed, thus greatly reducing the cost of production,

IVhat is claimed is '1. The combination with a metallic shoe provided with a rectangular socket having bottom for a major portion of their length 1 and terminating at the top in outwardlyflared seats, of a calk comprising a body member adapted to bear against the lower face of the shoe and having an upwardlytapering tenon of resilient material extending therefrom and fitting the socket said tenon having at its upper end a transverse V-shaped cleft between the flared seats of the socket to permit the insertion or removal thereof.

2. The combination with a horseshoe hav ing sockets formed in the heel and toe portions thereof, each socket being rectangular in cross-section and having its walls converging towards the top and there terminating on its transversely opposite sides in outwardly-flared walls to constitute seats, of a plurality of calks, each comprising a body member adapted to bear against the lower face of the shoe and having a ground-engaging portion, an upstanding tenon formed on the body member and having tapering sides to fit the socket in the shoe, said tenon being arranged to one side of the center of the base and having a central V-shaped cleft at its upper end to provide resilient terminal arms, extensions formed on the outer upper edges of the arms and having their lower faces beveled and parallel to the cleft to be compressed when driven into the socket of the, shoe and to spring outwardly and into the seats at the upper end of the socket to retain the calk in position.

of, the longitudinal axis of each socket being arranged at a slight angle to the upper face of, the shoe, each socket being square in cross-section and having its walls tapering towards the upper face of the shoe and extending through the same, the longi tudinal walls terminating on opposite transwall flush with one side edge of the base to provide around three sides a shoulder adapt ed to bear against the lower side of the shoe, the two oppositely-disposed side portions of the shoulder being inclined forwardly and rearwardly-from the'center to provide tapering recesses for the introduction, of a wedge-shaped tool for forcing the tenon from the socket.

In testimony that I claim the foregoing as my own, I have hereto affixed my signa JOSEPH H. FREEMAN.

ture.

3. The combination with a horseshoe having sockets formed in the heel and toe there-

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