US252206A - Mining implement - Google Patents

Description

(No Model.)

A T. M. GALLAHER.

I MINING IMPLEMENT. No. 252,206. v Patented Jan. 10,12882.

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WITNESSES- %W4%M% INYENTUR- ATTUHNEYE.

N PETERS, Phnlnlilhpgnphzr. Washington. 0. c.

UNITED STATES PATENT OEEIcE.

MINING IMPLEMENT.

SPECIFICATION formingpart of Letters Patent No.

252,206, dated January 10, 1882.

Application filed October 29, 1881. (No model.)

To all whom it may concern:

Be it known that I, THOMAS M. GALLAHER, a resident of the county of Belmont and State ofOhio, (address Shields P. O.,) haveinvented certain new and useful Improvements in Min ing Implements; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part 'fot' this specification. 1

My invention relates specially to that class of mining-tools known as coalanining picks, and it consists of certain improvements in the construction ofthe same, hereinafter more fully explained in detail, whereby the pick-bladeis readily detached from the handle, thus 'obviating the necessity ofhaving a separate handle for each pick, as is the case with the hand picks in general use.

In the drawings, Figure 1 is a" side view of my improved hand-pick; Fig. 2, an edge view; Fig. 3, view of the pick-blade detached from the handle.

Like letters of reference refer to like parts.

The letter A represents a handle-socket and pick-eye combined, made preferably of cast metal, having an opening lengthwise in one end for the reception of the handle, and provided with another opening or eye, near the opposite end crosswise with the handle, for the reception of the pick-blade.

B is the handle, not unlike those in'general nse,and is securely fastened in the socket with a small rivet, b, orthreaded bolt.

0 is the pick-blade, which is simply a flat bar, preferably of malleable steel, made tapering to a point at each end, and having 'a squarecornered notch, 6, cut out of one edge in the center of its length, for the purpose ofpreventjury from fire.

ing the blade slipping outof the eye when itis wedged into position for service.

D is a tapering or wedge-shaped key, used to fasten thepick-bladein the e) e ofthehandle. When it is required to remove the pick hlade all that is necessary to do is to draw out the key, and the blade can readily be detached.

A hand pick made in this manner possesses several advantages over the old style.

First, the pick-blade can be made entirely of steel without incurring great expense, and thus secure greater strengt h and rigidity not found in apick-blade made ofiron and steel combined.

Second, the blade being readily detachable from thehandleobviates thenecessityofhaving ahandlein each pick, thus efl'ectinga great saving in the number of handles required in a kit of tools and also the labor of carrying them to and fro from the mines. An additional advantage is found in having the pickblade detached from the handle during the operation of repointing the blades, and the liability of in- I and the consequent shrinkage of the handle in the eye, are removed.

-Third, strength and durability are combined with cheapness in construction.

Havingdescrihed m invention. what lclaim, and desire to secure by Letters Patent of the United States, is

The combination, with the head A, having a handle-socket, of a pick-blade having a iccess, e, the ends of which bear onthe ends of the head and prevent displacement in the di rection ofthe length of the blade, and a wedgekey, D.

In testimony that I claim the foregoing as my own I hereunto affix my signature in presence of two witnesses.

' THOMAS M. GALLAHER.

Witnesses:

GEO. K. S'roRM, E. B. HOWARD.

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