US823296A - Detachable-calk horseshoe. - Google Patents

Description

No. 828,296; PATENTED JUNE 12., 1906. W. E. SHAW. DETAGH ABLB OALK HORSE-SHOE,

APPLICATION FILED AUG.29,1905.

4 SHEET$-SHEET 1.

PATENTBD JUNE 12, 1906 W. E. SHAW.

DETAGHABLE GALK HOESESHOB.

APPLICATION FILED AUG. 29, 1905.

4 SHEETS*#SHEET 2.

No. 823,296. PATENTED JUNE 12, 1906.

W'. B. SHAW.

DETAUHABLE GALK HORSESHOE.

APPLICATION FILED AUG. 29, 1905.

4 SHEETSSHEET 3.

ANDREW a era-mm co, Pmm-umommms. WASMNGYUN o e PATENTED JUNE 12, 1906.

W. B. SHAW. DETAOHABLE GALK HORSESHOE.

APPLICATION FILED AUG. 29, 1905.

4 $HEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

VVILLIAM E. SHAW, OF SAN F RANOISOO, CALIFORNIA, ASSIGNOR OF ONE- DETACHABLE-OALK HORSESHOE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed August 29, 1905. Serial No. 276,205

To all whom it may concern:

Be it known that 1, WILLIAM E. SHAW, of San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Detachable-Calk Horseshoes, of which the following is a specification.

This invention relates to horseshoes, and has particular reference to that type in which the calks are made detachable, so that they may be readily replaced by new.ones when worn out.

One of the objects of this invention is to provide a horeshoe with a calk, particularly the toe-calk, having a plurality of parts which interlock with similarly-formed parts on the shoe, the interlocking movement being a lateral one relatively to the calk or in the direction of the outline of the shoe itself.

Another object of the invention is to provide interchangeable spur-calks and rubberfaced or padded calks having duplicate attaching-bases, whereby they may be readily substituted one for another on the shoe.

Another object of the invention is to provide calks having attaching means wider at one end than the other, whereby they will wedge firmly in place, the shape of the interlocking parts of the shoe and the heel-calks being such as to oppose the thrust of astumble or a blow resulting from striking an obstruction.

Another object of the invention is toprovide horseshoes with detachable calks, the heel-calks having inclined interlocking portions, the direction of inclination being upward and rearward to oppose the pressure of the forward pullof the horse, said direction of inclination also opposing movement that would tend to release the wedging grip of the members.

Of the accompanying drawings, Figure 1 is an under plan view of a horseshoe embodying my invention, the toe-calk being partially moved to one side in the position which it would occupy during the attaching or de-' taching movements and one of the heel-calks being separated from the shoe. Fig. 2 represents a side elevation of the same. Fig. 3 is a partial plan view of the same, the heelcalk being shown as detached and the toe-calk being shown by full lines in secured position and by dotted lines in the position which it occupies when freed from the Wedging grip and ready to be removed. Fig. 4 is a front elevation of the shoe. Fig. 5 is a rear elevation of the same. Fig. 6 is a perspective view of the toe-calk detached. Fig. 7 is a perspective view of one of the heel-calks and one end of the shoe. Fig. 8 represents a section on line 8 8 of Fig. 3. Fig. 9 is a view similar to Fig. 8, the toe-calk being removed. Fig. 10 is adetail section on line 10 10 of Fig. 1. Fig. 11 is a view similar to Fig. 8, but illustrating a modification hereinafter described. Figs. 12 to 16, inclusive, are views similar to Figs. 1 to 5, inclusive, showing the same shoe, but with the padded calks substituted for the sharpened calks. Fig. 17 is a view similar to Fig. 10, but showing the padded calk. Fig. 18 is a view similar to Fig. 7, but showing a padded calk. Fig. 19 is a View similar to Fig. 8, but showing a padded calk. Fig. 20 is a perspective view of the padded toecalk.

Similar reference characters indicate the same parts in all the figures.

The body of the horseshoe is provided with the usual nail-holes and clip 26 to bear against the front of the hoof. The upper face of the toe portion of the shoe is formed with a recess 27, terminating in a shoulder 28, and an outer recess 29, terminating in a shoulder 30, said shoulders 28 and 30 serving as stops to limit the lateral movement of the toe-calk in one direction. In cross-section the toe portion of the shoe tapers laterally from the center, so that when the toe-calk is moved from the position shown by full lines in Fig. 3 to the dotted-line position its lips or ribs presently described may be disengaged from the recesses 27 and 29. The toe portion of the shoe is formed with an under rib 31, having an undercut recess 32 in its front.

The body 33 of the toe-calk is formed with an inner lip or rib 34 to fit the recess 27 of the shoe and with an outer lip or rib 35 to fit the recess 29 of the shoe and with an intermediate lip or rib 36 to fit the undercut recess 32, formed in the rib 31 of the shoe. The grooves between the ribs or lips of the toecalk taper sufficiently so that when the toe calk is moved from the position shown by dotted lines in Fig. 3 to the full-line posit on the interlocking parts, comprising the ribs and recesses described, will fit tightly, so that the toe-calk is practically wedged 1n place when its end abuts against the stop- shoulders 28 and 30.

The sharpened toe-calk illustrated is preferably provided with two sharpened projecting portions 37 and an intermediate recessed and sharpened portion 38. This construction provides one which will present a sharp edge even after considerable wear, because as the portions 37 wear down the sharp por tion 38 will come in contact with the ground.

As an additional means to prevent the toecalk from accidentally slipping so as to become loose after it has been wedged in place I may provide the body of the toe-calk with a hole 39 and the body of the horseshoe with a recess 40. A pin 41, driven through the hole 39 into the recess 40, will serve to lock the toe-calk in place. When it is desired to remove the toe-calk, a sharp blow in the direction away from the stop- shoulders 28 and 30 Will cut the pin 41 and the portion Which remains in the toe-calk may be pushed out, and the portion remaining in the recess of the horseshoe may be removed by a blow upon the under face of the toe portion of the shoe. Of course the hole 39 and the recess 40 will be so positioned that when they register or are in alinement to receive the pin the parts will be in wedged position, as above described.

The form of toe-calk so far described presents a plurality of interlocking parts or ribs in different planes, so that there is no possibility of the calk becoming dislodged when the horse stumbles or strikes an obstruction.

Each heel portion or end of the horseshoe is thickened, and said thickened portion has its sides tapering forward, as clearly shown in Fig. 1. The said thickened portion is provided with an inclined face 42, havin grooves 43 in its sides. A stop or shoul" er 44 is formed at the end of the thickened portion. The body 45 of the heel-calk has a face which fits the inclined face 42 of the shoe, and the sides of the toe-calk extend down over the sides of the wedge-shaped thickened portion of the shoe and are formed with side ribs 47 to engage the grooves 43 of the shoe. The toe-calk is also provided with a recess 46 at its end to fit the stop 44 of the shoe and with a lug 48 at its front end, said lug having a hole 49. The shoe is formed with a recess 50 to receive a pin 51 driven through the hole 48 into said recess. Said hole and recess are so positioned that when registering with each other or in alinement to receive the pin 51 the heel-calk is wedged firmly in place, this feature being the same as that comprising the hole 39, recess 40, and pin 41, employed in connection with the toe-calk. The sharpened portion of the heel-calk is represented at 52. As shown in Fig. 2, the inclined meeting faces of the shoe and heel calks are such that the weight of the horse or a pulling movement tends to move the heel-calk toward the rear; but this movement only serves to wedge the heel-calk more firmly in place, if such movement could be permitted by the stop 44 or the in 51. incline meeting faces, the wedging interlocking sides, the stop 44, and the lockingpin 51 serves to hold the heel-calks with absolute firmness; yet they can be readily removed by striking them sharply at the rear, so as to cut the pin 51, after which the portions of the pin can be removed in the same manner as above described in connection with the pin 41.

Each calk, as will be observed, has a wide base which embraces correspondingly-formed portions of the shoe and bears on fiat surfaces in different planes, and therefore insures a permanent connection which renders it impossible for the calk to become accidentally displaced by any lateral blOW or pressure tending to spread the interlocking members. As shown in Figs. 2 and 8, the lips or ribs 34 and 35 of the toe-calk are widely separated from each other and embrace the parts of the shoe with which they interlock, allportions of the face of said calk between said ribs bearing against correspondingly-formed supportin -faces of the shoe, and the lower faces of said ribs are flat and engage similar faces of the body of the shoe. The upper and lower faces of the ribs 31 and 36 are also flat and bear on similar faces of the body of the shoe in planes different from each other and from the plane of the ribs 34 and 35. This wide base and the flat bearings in different planes and the inclosing grasp taken by the ribs of said calk prevent any liability of displacement either by a stumbling blow against an obstruction or by a full-strength pull forward.

As shown in Figs. 4 and 5, the side ribs 47 of each heel-calk are widely separated from each other and embrace the parts of the shoe with which they interlock and have fiat up per faces which bear on similar faces of the body of the shoe, and the flat face of the calk between said ribs bears against a correspondingly-formed supporting-face of the body of the shoe in a different plane from that of the bearing of the ribs 47. The resultin wide base-bearing and grasp of the heel-cal like that of the toe-calk, and flat bearings in different planes renders it impossible to displace the calk by a lateral blow or pressure.

In Figs. 12 to 20, inclusive, the construction is identical with that so far described, excepting that the calks are provided with rubber pads instead of sharp ribs. The interlocking portions of the shoe and calks shown in Figs. 12 to 20 are the same as in Figs. 1 to 10. Therefore the same reference characters are employed in Figs. 12 to 20 for those parts which are identical with the other form.

The body of the padded toe-calk is represented at 330, and the body of the padded heel-calk is indicated at 450. These bodies are formed. thicker than the calks 33 and 45 The combined action of the and are chambered to receive the rubber cushions or pads 53. The walls of the chambers are turned inwardly, as at 54, so as to retain the rubber more firmly in said chambers, and the bottom of each chamber is formed with a hole or holes 55. At the end of the hole opposite the rubber-filled chamber the body of the calk is formed with a shallow recess 56. A portion of the rubber extends through the hole 55 to form a stem 57, and the end of said stem is formed with a head or flange 58, fitting the recess 56. Said stem and head serve to hold the cushion securely in its chamber. If the rubber is introduced into this chamber while in a soft condition and then vulcanized in place, a portion of the rubber will readily pass through the hole and into the recess to form the stem 57 and head 58; but if the rubber is molded and vulcanized prior to insertion the head 58 may be folded or collapsed sufficiently so that it can be pushed through the hole 55 and then allowed to expand in the recess 56. The padded toe-calk is preferably provided with an ear 59, having a hole to receive a pin 60, (see Fig. 12,) entering a suitable recess in the body of the shoe, said pin 60 serving the same purpose as the pin 41, above described. As indicated in Fig. 11, the interlocking members 29 and 35 may be omitted, the toe-calk being simply provided with an outer rib 360, entering the front undercut recess 32. This form of calk has but two bearings and interlockin members instead of three, as in the other orms; but the interlocking parts are in different planes and will serve for light travel. When the calk is formed with but two interlocking ribs instead of three, as shown in this figure, I prefer to form the web or body of the calk flat and inclined, as shown in said figure, instead of curved, as in the other figures, and of course the face of the shoe against which the calk bears will be similarly flat and inclined.

It will now be understood that since the sharpened calks and the padded calks are identical so far as their ribs and recesses are concerned they may be readily substituted for each other in connection with a single horseshoe or base, such change being made according to the condition of the roadways or the season of the year without requiring the services of a-blacksmi th and the removal of nails from the hoof of the animal and driving new nails or the shaping of new shoes to fit the hoof of the animal.

I claim 1. A horseshoe having a removable calk,

the said shoe and calk having interlocking parts formed to be engaged by movement in the direction of the curve of the horseshoe, the said calk having a wide base with marginal portions embracing and closely fitting correspondingly-formed portions of the shoe, and having a central bearing and parallel side bearings in a diflerent plane from that of the central bearing.

2. A horseshoe having removable toe and heel calks, the said shoe and calks having wedge-shaped interlocking portions formed to oppose movement of the calks along the body of the shoe, the said calks having wide bases with marginal portions embracing and closely fitting correspondingly-formed portions of the shoe, and the said body and calks having fiat parallel bearing-faces in different planes.

3. A horseshoe-body having a removable calk, provided with a plurality of interlocking ribs and grooves having flat parallel bearing-faces in difierent planes, said ribs and grooves bein wedge-shaped in the direction of their length 4. A horseshoe-body having a removable calk, provided with a plurality of horizontally-proj ecting interlocking ribs and grooves in different planes, said body and calk being longitudinally wedge-shaped in form.

5. The combination with a horseshoe having inner and outer and intermediate ribs projecting horizontally from the toe portion thereof, of a toe-calk formed to engage said ribs.

6. The combination with a horseshoe hav-- ing inner and outer and intermediate ribs projecting horizontally from the toe portion thereof, of a toe-calk formed to engage said ribs, and means for locking the parts together when engaged.

7. The combination with a horseshoe having inner and outer and intermediate ribs projecting horizontally from the toe portion thereof, of a toe-calk formed to engage said ribs, and means for locking the parts together when engaged, said means comprising a pin uniting the calk and body of the shoe.

8. The combination with a horseshoe, of a removable toe-calk having a sharpened edge at each end, and a sharpened intermediate recessed portion.

In testimony whereof I have affixed my signature in presence of two witnesses.

WILLIAM E. SHAW. Witnesses A. W; HARRISON, E. BATOHELDER IIO

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