US781801A - Pick. - Google Patents

Description

PATENTED FEB. 7, 1905.'

H. G. ATHA.

PICK.

APPLIOATION FILED AUG. 1s, 1904.

UNTTED STATES Patented February *7, 1905.

PATENT OEEicE.

PICK.

SPECIFICATION forming part of Letters Patent No. 781,801, dated February 7, 1905.

Application filed August 15,1904. Serial No. 220.701.

To HJ] 'wh/ont it fit/ty cm1/cern:

Be it known that l, HENRY (l. A'iiia, residi ing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Picks, of which the after described. with a two-part head this followingis a full, clear,and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. This invention relates to the construction of implements in the nature of picks.

One of the objects thereof is to provide a of the above type in which the above results are attained withoutany weakening' of the sevi end Qf the handle and preferablyY secured in eral parts.

Other objects willbe in part obvious andiii part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations ofelements, and arrangement of parts which will be exemplified in the implement herein described and the scope of theapplication of which will be indicated in the claims at the end of this description.

ln the accompanying drawings, wherein are shown two of the various possible einbodiments of my invention, Figure l is a side elei vation of a pick, showingl the pick-bar in place. Fig. i2 is an enlarged vertical section through the head of the same. Fig. 3 is a perspective View of the head of the pick shown in Fig. l. Fig. s is an elevation of a slightly-different construction embodying some features of my invention. Fig. 5 is a perspective view of the head of the implement shown in Fig. l.

Similar reference characters refer to siminess that it cannot become detached in the lar parts throughout the several views.

Preliminary to a description of the embodiment-s of my invention herein set Yforth it may be noted that it is a highly desirable feature to have the pick-bar securely fixed in position and yet separable for the purposes of sharpening or renewal. lf it is attempted to attain these objects by means of a bolt or key, it is found thatthese parts. if smallenough to prevent weakening of the pick-bar. have a tendency to bend and become fast in their position. lt is also found that if it is attempted to secure the pick-bar in position, as is hereinmember lacks sufficient rigidity to have the desired grip upon the pick-bar. The above defects are remedied in constructions of the nature of that hereinafter described, in the preferred form of which the pick-bar is not slotted or perforated or the outer surface thereof otherwise broken.

Referring now to Fig. l of the drawings, there is represented at .l a handle, to one end of which is secured the head Q. The latter member is provided with two projections or lugs 3, adapted to engage opposite sides of the place by means of a bolt passing' through the same and the end of the handle on which the head is mounted. Connecting lugs 3 are flanges 5, which preferably project over the end of the handle l, and thus, together with lugs 3, form a solid socket within which the end of the handle is securely held. The upper portion of the head 2 forms a casing within which the pick-bar (3 is adapted to be forced. This casing as shown extends throughout the entire width of the head, and the length thereof is slightly increased by means of projecting flanges?. lVithin this casingisforced a pick-bar 6, which may be of any desired construction and is preferably of slightly larger cross-section than that of the passage through the casing. This pick-bar is forced into position under great pressure, preferably by means of a hydraulic press or similar appai'atus. The pick-bai' being forced into the thel casing held in place by the reaction of the walls of the casingl thereon with such firmcourse ofordinary use. The process by which the pick-bar is forced in position is similar to that by which locomotive-wheels are vforced upon the axles, and the tenacity with which these parts retain their hold is well known. ll'hen it is desired to remove the pick-bar, however, the same may be readily accomplished by n'ieans similar to those with which it was forcd in place.

It will thus loe seen that I have provided simple and inexpensive means whereby a pick-bar may be rigidly and securely mounted on a handle or equivalent member and yet may be readily removed for sharpening or other purposes. The parts are inexpensive and easily formed and, owing to the anged construction of the head, are unlikely to split the end of the handle or become loose thereon. The pick bar, moreover, is not weakened by cutting or perforation and there are no bolts or keys which are likely to become fast in use.

Figs. 4 and 5 showan embodiment of some features of my invention in which the form of the head 8 is substantially the same as that above described; but this member, together with the pick-bar 9, is provided with registering perforations l0, adapted to receive a bolt ll, so as to afford an auxiliary means of retaining the piek-bar in place. It has been found, however, that the mere forcing of the pick-bar into the head is sufficient to accomplish this object, and hence the use 0f an auxiliary bolt, as is indicated in the embodiment shown in Figs. 4 and 5, is generally found unnecessary.

As various embodiments of my invention, some of which would be apparently widely different from that herein described, could be made without departing from the scope thereof, I intend that all matter herein described or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What Iclaim as my invention, and desire to secure by Letters Patent, is-

l. In an implement of the class described, in combination, a handle, a rigid one-piece head, lugs on said head engaging said handle upon opposite sides thereof, retaining means passing through said lugs and said handle and retaining said head thereon said head being provided with an opening of substantially uniform cross-section at right angles to said handle, and a pick-bar of slightly greater crosssection than that of saidopening forced into the same, said pick-bar having an unbroken outer surface and the maximum cross-section thereof lying within said head.

2. In an implement of the class described, in combination, a handle, a rigid onepiece head, lugs on said head engaging said handle on opposite sides thereof, retaining means passing through said lugs and said handle and retaining said head upon said handle, said head being provided with an opening of substantially uniform cross-section at right angles to said handle, flanges connecting said lugs and engaging said handle upon opposite sides thereof, and a pick-bar of slightly greater cross-section than that of said opening forced into the same, said pick-bar having an unbroken outer surface and the maximum crosssection thereof lying within said head.

In testimony whereof I affix my signature in the presence of two witnesses.

HENRY G. ATHA.

Witnesses:

EDW. INGALLs, DONALD M. BARRELL.

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