US37196A

US37196A - Improved method of securing bits in stocks

Info

Publication number: US37196A
Authority: US
Publication date: 1862-12-16
Anticipated expiration: 1879-12-16

Description

A UNITED STATES PATENT UEETCE.

DANIEL KELLY, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO HIMSELF AND JACOB A. SMITH, OF SAME PLACE.

iit/iiOVED-METHGD OF SECUFHNG BITS ibi STOCKS.

Spccilication forming part of Letters Patent No. Sfll @6, dated December 16, 1862.

To @ZZ whom it may concern.-

Be it known that I, DANIEL KELLY, of Grand Rapids, in the county ot' Kent and State of Michigan, have invented a new and Improved Device for Securing Bits in their Stocks, and I do hereby declare that the following is a iull4 clear, and erao description thereof, reference bcinghad to the accom panying drawings, making a part of this specilication, in Which- Figure l is a side view showing the improved bit stock, showing a bit secured in it. Fig. 2 is a view ci' a bit-head adapted to the improved stock. Fig. 3 is a top view ot' a square bitstock having my improvement applied to it. Fig. 4 is aperspective view ofthe fastening` detached from the stock. Fig. 5 shows the application of my improvement to a round bit-stock.

Similar letters of reference indicate correspouding` parts in the several iigures.

The object of this invention is to obtain a simple device for securing' bits to their stock, which may he readily applied to an ordinary round or square stock, and which will draw the bithead tirinly into the stock and at the same time lock it securely therein, as will be hereinafter described.

To enable those skilled in the art to make and use my invcntion,I will proceed to de scribe its construction and operation.

A represents the bit-stock, or that portion into which the heads ofthe bits are secured. This stock, which may be either round or square, has the usual'square tapering` socket formed through it, or into its lower end, for receiving the corresponding tapering heads B ot' the bits, as shown in Figs. l and 3 of the drawings. The square stock Av has a small recess formed into one corner of its upper end, and into this recess a wedge-key or notched button, u, is pivoted, so that a portion of this key will project over the socket, which is through the stock, as shown in Fig. 4E of the drawings. This button c, which secures the hit in the stock, consists or" a dat disk having a notch cut into one edge, to allow the end ot the bit-head to pass through the stock A. Unc ot the edges ot' the notch is beveled, so as to form a model or key, b, which is intended to draw the bit-head tightly into its socket. Through the center of the button a a hole is made, to receive a screw-pin, c, which screw secures the button in its recess in the top of stock A, and forms a pivot, about which the butt-on turns, as shown in Figs. l and 3 of the drawings. A short projection, d, on the button a, serves as a handle, which is used in tuining the button to lock the bit in the stock A. The heads of bits, which are to be secured in stock A, must each have a slot, e, cut transversely into one of their corners, as shown in Fig. 2. This slot can be readily made with a saw, andit should be made at such apointon each bit-head that when the bit-head is introduced into the socket in stock A, the tapered edge or wedge Z1 ofthe button a may be forced under the upper edge of the slot e in the bithead. The Wedge b will thus draw the bit tightly up into its socket, `and as the wedge b thus enters the slot e it will form a lock, which will keep the bit securely in its place in the stock. When the handle d is turned backward until the button a is out of the slot e, the bit may he readily slipped out of the stock. This notched button above-described, and represented in Figs. l, 2, and 3 ot' the drawings, may be readilyT applied to a common round stock, (represented in red lines in Fig. 5 of the drawings,) by sawinga slot transversely across the stock at a suitable point, into which the button tt is introduced and pivoted. as described for the square stock. The bit-head is now secured into this round stock in the same manner as described for the square stock.

The button u may be readily stamped out ot' a piece of steel, and its edge b beveled, as described, so as to form the wedge for drawing the bit-head tightly into its stock. The button can then be applied to a common bitstock with very little expense.

I do not claim, broadly, the invention of a horizontallyrotaiing button to hold the tool into the stock; but,

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

The arrangement of the notched wedgefaced pivoted button a with the tool-stock A and tool B, in the nianner'and for the purpose herein shown and described.

DANIEL KELLY.

VVitness'es:

T. SINCLAIE, WM. E. GROVE.