US479204A - Calk-sharpener - Google Patents

Description

' (No Model.)

'J. H. E. CLARK. GALK SHARPBNER.

Patented July 19, 1892.

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CYQZZ Zl UNITED STATES PATENT OFFICE.

JAMES H. E. CLARK, OF COUNCIL BLUFFS, IOWA.

CALK-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 479,204, dated July 19, 1892.

Application filed February 16, 1892. Serial No. 421,761. (No model.)

To all whom it may concern:

Be it known that I, JAMES H. E. CLARK, of Council Bluffs, in the county of Pottawattamie and State of Iowa, have invented certain useful Improvements in Calk-Sharpeners; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention has relation to a new and novel calk-sharpener.

The object of this invention is to provide a simple device by means of which the calks upon the shoes of draft animalssuch as mules and horses-may be readily and speedily sharpened without taking the shoe from the animals hoof, as will be described more fully hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 shows a calk-sharpener, with parts broken away, as attached to a horses hoof. Fig. 2 is a bottom view of the pivot-block, showing the arrangement of the worm-feed. Fig. 3 is a view, partly in section, illustrating the connection of the pinion-stock to the pivot-block, while Fig. 4 is a central sectional view of the adjustable spur-gear as employed in my devlce.

The aim of my invention is to provide a horseshoe-call: sharpener that shall be so constructed that it may be detachably secured to the shoe without danger of injuring thehoof, and that shall be sufficiently simple in its construction and operation so as to enable any unskilled operator to use the same.

In furthering the aim of my invention I provide a pivot-block comprising the bar A, of wrought or malleable cast-iron, which is provided with the circle A, forming part thereof. The bar is further provided with two longitudinal grooves, which are adapted to adj ustably hold the four T-shaped gripping-jawsB B B B, which are mounted in sets of two upon the right and left handed screws B B. These screws work within the grooves of the bar A, being supported at each end by means of the journal-plates B B as will be understood-by referring to Fig. 2. Centrally the bar A is provided with the pivot-post A integral therewith, and by means of which the pinion-stock is secured thereto. The circle A is provided with the worm C at aconvenient point, which is provided with an operating-head and held by means of the bracket C, as shown.

The base D of the pinion-stock is provided with a suitable opening adapted to contain the pivot-post A and is pivotally held upon said post by means of the nut D. This base D is provided with the worm-gear E, which is engaged by the worm C, so that these two circles A and E may both be adjusted or held in a locked position by means of said worm. Detachably secured to the base D is the pinion stock F, provided at a suitable point, near the upper end, with the threaded stubshaft F and terminating in an angular portion adapted to offer a bearing to the crowngearing II. This stock is of any suitable cast or forged metal. Adj ustably held upon the shaft F is the threaded sleeve F provided with the shoulder I, the operatinghead I, and the groove I Upon this sleeve the compound spur-gear K is revolubly held by means of the shoulder I and the plate K. The pinion of this gear is engaged by the crown-gear H, connected by means of a stubshaft H to the stock F and provided with the integral grooved pulley K and a suitable opcrating-crank 7c. Passing through the base of the stock F is the adjustable free millingshaft L,provided at the forward end with the miller M and at the rear with the fixed pinion M. This pinion meshes with the compound gear K, while the shaft Lis revolubly secured to the adjustable sleeve F by means of the tie-bar N. This bar N acts as an end bearing to the shaft L and at its lower end works between the pinion M and an end nut and at its upper end within the groove 1 so that as the sleeve F is adjusted the connected shaft Lisgivena correspondingadjustment. Upon the sides the stock is provided with the supporting-handles O C.

When all the instrumentalities have been properly arranged, the operation of my device would be as follows: The sharpener is secured to the shoe by means of the jaws B B B B, two of which work outward and two inward, so that the shoe is securely clampedbetween them, the screws 13 B being operated by means of a key. The miller M, secured to the forward end of the shaft-L, is then properly adjusted by means of the sleeve F and the sharpener started, being operated at the crown-wheel by hand or any other power. The miller is now fed forward and the feed adjusted by means of both thesleeveF and the worm C until the calk has been properly sharpened. WVhen the forward calk has been sharpened, it is simply necessary to feed the miller around by means of the worm C until the rear calks are reached, where the miller is again adjusted and fed from side to side until the calks are in proper condition. For. the various forms of calks difierent cutters are used.

Now, having described my said inventionand the best method known to me of operating the same, what I claim as new, and desire to adjustable upon said bar by means of a worm and. gear, a cutter-shaft within said stock,

provided with a pinion, an adjustable gear upon. said stub-shaft, meshing with saidpinion, and means for operating said gear, all substantially as and for the purpose set forth.

3. .In 'a calla-sharpener, the combination of a clamping base-bar, a pinion-stock pivotally secured to said bar and provided near its upper end with a threaded stub-shaft, a cuttor-shaft free within said stock, provided with a pinion, a threaded sleeve adjustable upon said threaded stub-shaft, provided with agear meshing with said pinion, and means for operating said gear, substantially as set forth.

4. In a calk-sharpener, the combination of the following instrumentalities, to wit a clamping base-bar provided with a worm, a

pivotedpinion-stocksecured to said bar, having a threaded stub-shaft near its upper end, and a worm-gear meshing with said worm at its lower end, a cutter-shaft free within said :stock, provided with a pinion, a threaded sleeve upon said stub-shaft, having a gear meshing with said pinion, a tie-bar connecting said cuttershaft to said sleeve, and means for operating said gear, all substantially as and for the purpose set forth.

5. In a calk-sharpener, the combination of the following instrumentalities, to wit: a clamping base-bar, a worm connected to said bar, a pivoted pinion-stock secured to said bar, provided at theupper endwith a shaft opening centrally with a threaded stub-shaft, and at the lower end with aworm-gear,'a cutter-shaft free within said stock provided with a pinion, and a compound gear andlpinion adjustable upon said stub-shaft, said gear meshing with the pinion upon the cutter- -shaft, a crown-gear securedto the upper end of the stock, said crown-gear meshingwith the .pinion of. said compound gear, a tie-bar-rcvolubly securing said cutter-shaft to said com- .pound gear, and meansfor actuating said crown-gear to operate said cutter-shaft, said cutter-shaft havinga radial and circumferential adjustment within one plane,allsubstantially as and for the purpose set forth.

In testimony whereofI afiix my signature in presence of twowitnesses.

JAMES H. E. CLARK. Witnesses:

GEo. F. WRIGHT, JOHN N. BALDWIN.

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