US650882A - Pick. - Google Patents

Description

No. 650,882. Patented 1m 5, I900. w. F.WALKER.

PICK.

(Application filed Dec 7, 1899 (No Model.)

UNITED STATES PATENT OFFICE.

\VILLIS F. WALKER, OF OHARLESTOWN, WEST VIRGINIA.

PICK.

SPECIFICATION forming part of Letters Patent No. 650,882, dated June 5, 1900.

Application filed December 7, 1892. Serial No. 739,543- (No model.)

To aZZ whom/it may concern:

Be it known that I, WILLIS F. WALKER, a citizen of the United States, residing at Charlestown, in the county of Jefferson and State of West Virginia, have invented a new and useful Pick, of which the following is a specification.

This invention relates to picks in general, and more particularly to miners picks, the object of the invention being to provide a construction of head-holding clip and heads wherein the heads may be interchangeably connected with the handle of the pick and each head may be brought to lie at right angles to the handle irrespective of variations in the proportions of the several heads, the construction being particularly designed as an improvement upon my prior patent, numbered 434,896, dated August 19, 1890.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 isaside elevation of the complete pick-clip and the head connected therewith. Fig. 2 is a view showing the head of the pick in side elevation and showing the clip in section with its adjusting-screws in elevation. Fig. 3 is a perspective view of the clip with the adj usting-screws removed.

The head or body of the tool is indicated generally by the numeral 10, and the handleclip is indicated at 11. In the general aspect the body and the handle-cli p are substantially as disclosed by my prior patent, to which reference has been made, but in the present invention I have provided an improved means for tightening the pivotal point of connection between the tool-head and the handle-clip, which means wholly overcomes any tendency of the parts to work loose and holds the head at the proper angle to the handle, irrespective of the dimensions of the several heads that are to be used interchangeably.

As shown in the drawings, the head of the pick is provided with an enlarged central portion 12 and with the tapered points 13. The central portion of the body is provided with recesses 14- in its opposite faces, which recesses are adapted to receivelugs on the handle-clip, as will presently appear.

The handle clip 11 is forged or wrought from a single piece of metal in substantially the clip and substantially parallel.

the form illustrated more clearly by Fig. 3 of the drawings, and the eye portion of said clip is tapered, as shown by Fig. 3, in order to make the metal of greater thickness at one end than the other. This clip has the usual eye 19 for the reception of one end of the handle, and from the clip at that end where the metal is thickest protrudes the pair of lugs 20 and 21, said lugs being disposed on opposite sides of The lugs are of curved form in cross-section and are fashioned and proportioned so as to fit in the concave recesses 14 in the opposite faces of the tool-head. The lugs do not fit snugly in these recesses, but a limited play or movement is permitted to the tool-head for the purpose of adjusting the head properly when secured to the handle, so that all the heads when interchangeably connected with the clip may lie at right angles to the handle in the clip, irrespective of variations in their proportions. Said lugs 20 and 21 are provided with apertures 22, arranged in alinement, and in the central recessed portion of the tool-head is formed a transverse aperture 23. In assembling the head and clip the lugs 20 and 21 are fitted in the concavities 14: to bring the apertures 22 of said lugs into registration with the aperture 23 in the head, and a securing-pin 25, preferably of steel, is passed through the registering apertures in order to attach the head pivotally to the clip.

At the bases of the lugs 20 and 21 the clip is extended laterally to form shoulders 24, which are disposed on opposite sides of the lugs and with their upper faces below the apertures of the lugs. In the upper faces of the shoulders 24 are formed threaded perforations 30, with which are engaged adjusting- screws 26 and 27, the heads of which lie between the shoulders and the lower face of the head,

whereby said screws may be moved outwardly fixed position one head might be held at right angles to the handle a second head would be held at an acute angle to the handle, with the screws in the same position. With this construction, however, the screws may not only be manipulated to force the head outwardly, and thus cramp the pin to hold the head connected to the clip, but by manipulation of the screws each head may be brought to lie at right angles to the axis of the clip-that is, at right angles to the handle.

Having thus described the invention, what I claim is- 1. In a miners pick, the combination with a handle, of a clip having a socket in which the handle is engaged, oppositely-extending shoulders at the sides of the clip having threaded perforations, set-screws engaged with the perforations, a lug extending longitudinally from the end of the clip and having a transverse perforation, a head having a transverse perforation for registration with the perforation of the lug, and a pin passed through the alining perforations and having a lesser diameter than the perforations, said head being disposed for engagement by the set-screws, whereby they may be adjusted outwardly to engage the head and move it to move the pin against the outer side of the perforation 'of the lug and cramp it in the perforations to hold it in place to hold the head to the handle.

2. In a miners pick, the combination with a handle, of a clip having a socket in which the handle is engaged, oppositely-extending shoulders at the sides of the clip having threaded perforations, set-screws engaged with the perforations, parallel lugs extending longitudinally from the outer end of the clip and separated by an iuterspace, said lugs having alining perforations formed therein, a head between the lugs and having a per foration registering with the perforations of the lugs, and a pin engaging the alining perforations, said pin having a lesser diameter than the perforations and the head lying in the path of outward movement of the setscrews, whereby the head may be moved out wardly to engage and move the pin outwardly and cramp it against the outer Walls of the perforations of the lugs to prevent its displacement and to hold the head upon the handle. Y

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

\VILLIS F. IVALKER. \Vitn esses:

F. W. BIGGER, C. T. SMALLWOOD.

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