US268938A - Bit-stock - Google Patents

Description

(No Model.)

A. H. REID.

' BIT STOCK.

Patented Dec. 12, 1882.,

gril/@ATCB @y Jj 2 `Alito? UNITED STATES PATENT OFFICE.

ALBAN H. REID, OF PHILADELPHIA, PENNSYLVANIA.

BIT-STOCK.

SPECIFICATION forming part of Letters Patent No. 268,938, dated December 12, 1882.

Application filed July 24, 1882. (No model.)

' ing is a specification.

My invention relates to a device intended to take the place of the ordinary bit-stock for operating wood-borin g tools, screw-drivers, drills, dac. The implement consists of a chuck or tool-holder attached to a spirally-threaded spindle, which is rotated by means ofan outside sleeve or body arranged to reciprocate thereon.

The principal aims of the invention are to adapt the device to turn the tool always in the same direction and avoid a backward rotation as the sleeve is drawn back, and to permit the operator to hold and steady-the tool Y during the boring operation. i

With these ends lin view the invention consists in combining with the body or sleeve a tixed head, by which it is driven forward Land' prevented from turning, and a loose head,` or its equivalent, bywhich itis retracted and permitted to revolve freely around the tool-holding spindle, which remains in the meanwhile at rest. The spindle is provided at its forward end with a loose collar or sleeve, by which it may be held and the tool guided, subjectedto" 4and also provided atone end with a socket or chuck, B, of any desired form', to receive and hold the boring-tool or other instrument.

C represents a tubular sleeve or body, arranged to slide endwise over the spindle, and provided in its lower end with anutorthreaded Surface, b, which engages with the spindle to rotate the same as the sleeve advances there,

on. At its upper end the spindle has a head or collar, c, by which it is prevented 'from escapingfrom the sleeve. Theupper end of the sleeve is provided with'a head or knob, D, fixed rmly thereon,and also,'below or in front of the same, with a second and loosely-revolving head, E, which may be secured in place by a collar, d, or in any other suitable manner. On the lower end of the spindle A there is secured a loosely-rotating sleeve or handle, F, of a size and torm to be conveniently grasped by the operator. In operating the device the operator, grasp ing the sleeve Fin one hand, holds and steades the instrument and direct-s the tool to the desired point. He then applies the pressure of his remaining hand or his body to the head D, and, holding the same against rotation,forces the same forward, causing the sleeve to slide over the spindle and impart thereto and to the tool a forward rotation. Relaxing his grasp upon the head D and drawing outward upon the head'E, he causes the sleeve to slide outward to its original position, thesleeve, in so doing, revolving loosely in the head E and around the spindle, permitting the latter and the tool therein to remain at rest. Itwill be seen that in this manner the tool is driven intermittingly in one direction, instead of being turned alternately forward and backward.

By means of the non-rotating .sleeve E the pressure may be applied and graduated and the tool guided with great nicety; but in the manufacture ot' cheap stocks for coarse work the sleeve may be omitted.

The sleeve may be applied by constructing the chucks separately from the spindle, with a neck inserted through the sleeve and pinned fastin ahole in the spindle, or any other equivalent constrnction employed.

While it is preferred to make use of the fast and loose heads on the sleeve, a single revolving head mounted loosely thereon, and connected thereto by a pawl and ratchet, could be.

employed, thepawl beingin such casenrranged to lockthepa-rts together during the advance of the sleeve.

Having thus described my invention, what I vclaim is l. In combination with the spirally-threaded spindle or tool-holder, the external reciprocating sleeve and the two heads, one fast and the other loose upon the sleeve. t

2. In combination with the threaded spindle or tool-carrier, the reciprocating sleeve exposed and adapted to be held against rotation by hand, a loose head or handle applied to said 4. The combination of thesleeve or body, 1o sleeve, as described, whereby the sleeve may the fast and loose handles, the threaded spinl 'ne retracted and permitted to revolve meandle, and the handle or collar loosely applied while upon the spindle. to the forward end of the spindle.

3. The combination of the threaded spindle or tool-carrier, a reciprocating sleeve or bodT ALBAN H' REID' for rotating the same, and the loosely-rotating Witnesses: l collar F, applied to the forward end of the spin- GEORGE A. PAR SLOW, die independent of the reciprocating sleeve. JOSHUA E. WILLS.

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