US497261A

US497261A - Ratchet-drill

Info

Publication number: US497261A
Authority: US
Publication date: 1893-05-09
Anticipated expiration: 1910-05-09

Description

(No Model.)

- E. ANDERSON.

'RATOHET DRILL.

No. 497,261. Patnted May 9; 1893.

r lNl/ENTOR ITNESSES:

A TTOHNEY.

THE NORRIS PEYERS co. PHOTO-L|THO.. WAsHmC-TON. u, c.

UNITED STATES PATENT OFFICE.

' EUCLID ANDERSON, OF PEEKSKILL, new YORK.

RATCH ET-DRI LL.

SPECIFICATION forming part of Letters Patent No. 497,261, dated May 9, 1893 Application filed April 5, 1892. Serial 110,427,966. (No model.)

To all whom, it may concern.-

Be it known that I, EUCLID ANDERSON, a citizen of the United States, and a resident of Peekskill, in the county of Westchester and State of New York, have invented a new and useful Improvement in Ratchet -Drills, of

which the following is a specification, which I declare to be a full, clear, and accurate description of my invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being made to the accompanying drawings.

My invention has for its object, solidity, steadiness and compactness in a ratchet-drill, a ratchet from which the drill itself is pushed to its work, (littering in this respect from the usual forms of construction in all of which the feeding of the drill is accomplished by causing one part of the ratchet to unscrew from another part. These objects are accomplished by the means set forth in the drawings.

Figure I represents the general appearance of my ratchet drill. Fig. II is a vertical cross sectional view taken at right angles to the handle. Fig. III is a plan of the handle and ratchet. Fig. 1V represents the drill feeding nut.

Like letters refer to similar parts throughout the several views. I

By reference to Fig. III it will be seen that what I call the handle consists of two pieces, a, c, andb,the hub a and easing 0 consisting of one piece, the handle I) screwing into the hub a so that it can be easily removed. The pawl h and its bearing t' are in one piece, the bearing fitting a socket in the solid metal as shown. The spring Z is subject to a variation of tension by means of a screw j shown by broken lines. A drift forinsertion in the hole r to turn the feed, is attached to the milled head Q7, Fig. I, which is screwed into the end of the handle, the hollow handle forming a convenient sheath for it.

The particular features of the ratchet are clearly represented in Fig. II. A hub d is closed at one end except that it has a square holef, Fig. II, in the center for the insertion of a drill, inwhich the drill does not fit tight, but slides easily. The other end of the hub is provided with ratchet teeth e as in Fig. III. These parts fit in the casing as shown. The hub is bored to receive an internally threaded stock 6, and is provided with a recess 6" to accommodate a flange m on the said stock. This stock terminates in a center point in the ordinary manner, and has a hole 4" through it for the insertion of a drift or rod for turning it. The hub and stock are united andinserted in the casing c as shown, and are held there securely by the nut c which screws into the top of the casing. YVhen so united each piece will freely turn independently of the other.

Within the stock 6 a nut to a is fitted to the thread, through its center, in alignment with the square hole in the hub d, the nut is provided with a square, tapered hole, .as shown in Figs. II and IV.

It will be plain, that revolving the several parts shown in Fig. II, without the drill d, will not changethe position of the nut a a. But, when a drill is inserted as shown, it is plain that if the stock (5 be held stationary and the hub d be turned by means of the handle and ratchet, a downward movement of the nut a a will follow, and a consequent outward feeding of the drill. A reversal of the movement will draw the drill within the machine. This explains the action of the ratchet.

ity of the ordinary ratchet arising from poor fitting of the drill shanks to the common form of socket is a trying inconvenience. This is overcome in the ratchet described by the'drill having two bearings instead of one,-in the hub d and in the nut a a. Another convenience is the facility afforded for removing the drill from its socket.

By reference to Fig. II it will be seen that if a rod be inserted through the hole 1" in the stock 6, and the nut a Ct be screwed upward, the butt of the shank of the drill will come in contact with the rod and be forced from the socket.

The nut c'" is easily removable, and when it is taken away the stock e is readily removed from its place, and a longer stock can be inserted when the nature of the work requires a drill with a long traverse. A long stock difiers from the one shown only in being longer from the top of the flange 'm to the extreme point, and having an internal thread its full length.

While I have shown a square drill, and a square drill socket,itisobvious that anymeans for holding the drill in the manner indicated, that is, so that it shall be revolved by the hub d, and cause the nut a a to turn with it, will accomplish the same purpose and come within the scope of my invention.

I reserve the right to change the forms of construction herein shown so long as I embody in them the principles of my invention.

I claim 1. The combination of the ratchet hub 01 perforated to receive the shank of a drill, the drill beingfree to slide longitudinally through the said perforation but not to rotate therein, and the stock 6 held within the said hub by the casing c, c", internally threaded and carrying a nut a a which receives the end of the drill, causing the drill to move in or out of the stock as the hub 61 is revolved While the stock 2 is held stationary, substantially as shown and described.

2. The combination in a ratchet drill of the internally threaded stockc provided with a flange m, the ratchet hub d inclosing part of the stock e and revoluble by means of the handle and pawl, and allowing the passage of the drill through it longitudinally but causing the drill to revolve with it, a nut a a traversing the thread in its stock e and receiving the drill shank through its center causing the nut to move the drill when the hub 11 revolves and the stock 6 is held stationary, the several parts being held within the casing c by the nut c", substantially as shown and described. In testimony that I claim the foregoing as my invention I have signed my name in presence of two witnesses.

EUCLID ANDERSON.

Witnesses:

Cons VAN HORN, ALLEN BARGER.