US80805A - Ensign a - Google Patents

Description

, `@uitrit gisten gatrut @frnV ENSIGN A. BUSIINELL, OF HORICON, WISCONSIN.

Letters .Patent No. 80,805, dated A'ztgust 11, 1868; antevdatefl July 18, 1868.

ttt-e tlptnle referat `it im ttm tants patent mit noting putt nt tip time.

TO ALL WI-IOM IT MAY CONCERN:

Be it known that I, ENSIGN A. BUSIINELL, of Horicon, in the county ot' Dodge, and State of Wisconsin, have invented new and useful Improvements in Machine for Sharpening Horse-Shoe Galks; and I do hereby declare that the following is a full, clear, and exactfdescrption, which will enable Aothers skilled in the art tov which my invention -appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, and in which- Figure 1 represents the sliding-cap or gauge.

Figure 2 represents a perspective view of a portion ofthe machine, with my improvements attached.

Figure 3 represents the screw for holding and adjusting the spring in place.

Figures 4 and 5 represent the spring and burr, or cutter, constructed in accordance with my improvements.

Similar letters of reference indicate corresponding parts in the several gures.

This invention relates to certain improvements in machines for sharpening horse-shoe'calks, for which Letters Patent were grantedV to me, No. 55,617, and bearing date June I9, 1866. In this patent the Ascrew forr adjusting .the spring to the calks passed directly through the spring and into themain stock; said spring being slotted for this purpose, which had a tendency to weaken it to considerable extent. A set-screw'was also used, passing through the stock, and resting against the spring, to prevent the latter from coming in contactwith the burr, thus complicating the parts, and'detracting from the practicabilityrot' the invention. The cutting-edges of the burr were also straight or parallel with lits axis, and required a greater application 'of power to sharpen the calkjhan by the spiral cutters, which constitute my invention in this particular.l My improvements are designed to o bviate these diiiiculties, and they consist- First, in attaching a cap, carrying the burr, to the end of the main stock by means of a slot and set-screw, to enable it to be adjusted to the varying lengths of the calks, and avoidingthe necessity-of slotting the spring.

Second, in constructing a. guide, fitting upon the spring, and having a screw attached to its upper side,

passing through the mainstock, and adjusted by means of a set-screw; and

Lastly, in forming the cutting-edges of theburr spirally around it to lessen, the power necessary to operate the device.

In the drawings, R represents the cap, having its front end cut out in circular form, leaving two points or curved projections tting over the burr. The cap is slotted longitudinally, and adjusted upon the main stock to the varying lengths of the calks to` be sharpened, by means of the thumb-screw O.

B represents the spring, `consisting of a. wide and dat plate-having an extended handle, whose shankis slightly bent, as shown in iig. 5. This springis adapted to hold the sbarpener against the calk, and secure it in place. Its extended arm is held in place upon the wider side of the main stock, by being passed through a loop, D, having a screw-bolt attached to its upper side, and passing throng-h the main stock. The loop and spring are adjusted bymeans of a thumb-screw, upon the .end of the screw-bolt.

E represents my improved burr, whose cutting-edges are arranged in a spiral direction around it, instead of parallel to its axis, whereby less power is required to operate it in sharpening theY calks.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The slotted adjustable gauge R, and'iloop D, with `the screw-bolt and set-screw, in combination with the solid spring B, main stock and burr E, as herein described for the purpose specified.

ENSIGN A. BUSHNELL.` l

Witnesses: HIRAM BARBER, AUGUST WAGENER.

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