US141613A - Improvement in millstone-picks - Google Patents

Description

. T. R. WAY.

Mill-Stone Picks.

Patented August 5,

11111"l ynnllllllll rrnD STATES THOMAS R. WAY, OF SPRINGFIELD, OHIO.

IMPROVEMENT IN MlLLSTONE-PICKS.

Specification forming part of Letters Patent No. 141,613, dated August 5, 1873 application filed April 5, 1873.

To all 'whom it may concern Be it known that I, TrroMAs R. WAY, of Springfield, in the county or" Clarke and State of Ohio, have invented certain Improvements in Millstone-Picks, of which the following is a specification:

My invention consists in a novel manner of constructing the holder or body, and in combining therewith a reversible blade, tempered and sharpened at both ends.

Figure lis a vertical central section through my pick, and Fig. 2 an end view of the same.

In constructing my pick I make a rightangled body7 A, having one of its arms, a., adapted to receive the cutting-blade B, and the other arm, b, adapted to receive the handle G. The outer face of the arm ci, against which the blade rests, is made with a flat face, c, and is provided with side ilanges or lips d extending out past the edges of the blade to hold it from moving laterally. Between the anges or lips el I pivot an eccentric or cam lever, D, and under said lever I mount an arched spring-plate, E, provided at its upper end with ears e, which fit into notches in the ilanges d, so as to hold the plate in'place. I provide the flat face c, under the upper end of the spring-plate E, with a stud, F, to it into the blade and hold it from moving endwise. The blade is provided with a number of holes, g, to receive the stud, so that it may be moved up and down and fastened at different points, as may be required. The blade is inserted under the plate D and pressed down, so that the stud enters one of the holes g, and then the cam-lever turned down, as shown, so as to force the plate E down firmly and hold the blade securely in place against the iiat face c. The plate holds the blade 'down on its seat, the lianges d hold it from moving laterally, and the stud F holds it so that it cannot possibly play endwise. The blade is tempered and sharpened at both ends, and so constructed that when one end is worn it may be taken out and reversed, and the other end used, and thus the entire blade utilized. In order to release the blade, so that it may be adjusted up or down, or reversed, or removed and replaced by another, it is only necessary to turn the camlever up, and then raise the bladefrom the stud. By clamping the blade at the middle and lower end, and with the spring-plate, itis prevented from vibratin g and allowed a slight springing movementin the head or body, so thatthere is no danger of the breakage which so frequently takes place in the present picks, which have their blades secured rigidly, and held either at the middle alone or at the middle and upper end. It will be seen that under my arrangement it is absolutely impossible for the blade to move endwise unless a breakage of the stud occurs ,f that the blade is readily and easily inserted, removed, and adjusted; that both ends of the blade are left entire, so that they can both be sharpened and used by reversing they blade in the body or holder 5 that there is less danger than usual of breaking the blade; and that, as the holes occupy only a short portion ofthe blade, it can be almost entirely utilized.

The stud F may be castor forged on the body, or screwed in from the back, as shown, or set in from the face, or secured in any other suitable' manner. It is considered best, however, to screw it in, as shown, for the reasons that it can then be hardened, and can be removed and another substituted when it becomes worn. Instead of usingthe singlestudpassing through the middle of the blade, the blade may have its edges notched and two studs employed to fit therein. The handle C ofthe pick is inserted into the hollow skeleton-arm b of the body and secured by a cam-lever, Gr, and a spring-plate, H, placed thereunder, as shown. This arrangement permits ythe handle to be readily attached and detached, and allows the body to play or spring, so as to relieve the jar and strain; but, as it is shown in a case heretofore filed by me, it constitutes no part of the present invention.

It will be seen, on reference to Fig. l, that the handleis attached to the upper end of the body, and that consequently nearly the whole weight is below the handle. This arrangement causes the pick to hang naturally in the proper upright position when in use, so that it is handled with far more ease and accuracy than those of the ordinary form.

Having thus described my invention, what I claim is- 1. The head or body A provided with the stud F, in combination with the blade B and the cam-lever D, or equivalent fastening de-V vice.

2. The head A provided with the studF and cam-lever D, in combination with Jthe blade B and spring-plate E, substantially as shown and described.

3. A millstone-pick having its handle at tached at or near the upper end of the head or body, in order that the Weight may be below the handle, as and for the purpose described.

4. In combination with the body o1' holder, constructed as described, the double-ended reversible blade provided with a series of holes or recesses to receive the fastenin g-stud.

THOMAS R. WAY.

Witnesses:

WALTER L. WEAVER, WALTER E. NEWELL.

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