US333199A

US333199A - Ratchet-wrench

Info

Publication number: US333199A
Authority: US
Publication date: 1885-12-29
Anticipated expiration: 1902-12-29

Description

(No Model.)

I. P. GOBNOG.

RATGHET WRENOH.

No. 333,199. Patented Dec. 29, 1885.

N. PETERS, Fhcio-Uthogqpher, Wash] nnnnnnn c UNITED STATES PATENT OFFICE.

ISAAC P. CORNOG, OF PHILADELPHIA, PENNSYLVANIA.

RATCHET-WRENCH.

SPECIFICATION forming part of Letters Patent No. 333,199, dated December 29, 1885. Application filed November 11, 1885. Serial No. 182,406. (No model.)

To all whom it may concern.-

Be it known that I, ISAAC P. CORNOG, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Ratchet-Wrenches, of which the following is a specification.

My invention has reference to -ratchetwrenches; and it consists in certain improvements, fully set forth in the following specification and shown in the accompanying drawings, which form part thereof.

The object of my invention is to form a cheap, durable, and practical ratchet-wrench capable of being instantly set for right or left hand working.

The main feature of the invention consists in the simple and effective construction of the double pawl, which is adapted to work in connection with the ratchet-teeth formed on the socket-shaft.

In the drawings, Figure 1 is a plan View of a ratchet-wrench embodying my improvement, and Fig. 2 is a sectional elevation of same on line 00 00.

A is the handle, and is provided on one end with the hub or bearing section B.

O is a ratchet-wheel, the teeth 0 of which are made with faces equally inclined, substantially asshown. The said ratchet-wheel is provided with the square socket G, preferably made somewhat tapering, and the shaft-section D, which is furnished with an annular groove, E, so located as to come within the hub B, in which said shaft D is journaled.

F is a screw-stud, which passes through the hub 13 and fits into the groove E. The shaft D is extended through to the back of the wrench, and is provided with the pivot-screw H, which may be used when the wrench is employed for drilling, it then acting as afeeding device as well as a center. It is evident, however, that the extension of the shaft D and the centering-screwH might be dispensed with, so far as the ratchet-wrench proper is concerned.

I is the pawl, and is provided with the two legs J, uniting in a body having a slot, L, and is pivoted to the handleAbyastud, M, which passes through the slot and is riveted over the same, to prevent its displacement. Prior to securing the pawl in position a spring, 0, is

inserted in a recess, N, on the under side of the pawl, and, pressing against the stud M, tends to force the pawl toward the ratchetwheel. This stud M may be castintegral with the handle or may be riveted in place. The pawl, between the legs J and the pivot M, is notched, as at K K, formed substantially as if two holes were drilled through the said pawl and cut into each other, thus insuring the tongue is extending down somewhat between the said holes or notches.

P is a stud or projection formed on the handle, and projects up into the holes or notches K of the pawl.

From the foregoing it is seen that the pawl may be shifted so that the lug P shall project into either of the holes K, thus making the wrench right or left handed, and the said stud performs the function of preventing the pawl from being carried around upon the ratchetwheel during operation, it acting as astop for the pawl in either direction, according as to which leg is in operating position.

While I prefer the construction shown, I do not limit myself to the details thereof, as they may be somewhat modified without departing from my invention.

Having now described myinvention, what I claim as new, and desire to secure by Letters Patent, is'

1. The combination of the handle of a ratchet-wrench having a pawl-stop, P, with the ratchet-wheel journaled upon an end of said handle and provided with the nut or drill receiving hole, and the pivoted pawl I, having the two legs J J, notches or holes K K, separated by the tongue k, and a spring to press said pawl toward the ratchet-wheel, substantially as and for the purpose specified.

2. The combination of the handle A, having hubB and studs M and P, with ratchet-wheel 0, having shaft D, furnished with annular groove E, and, further, with the nut or drill receiving hole G, screw F, working in said annular groove, pawl I, having two legs, J J, notches or holes K K, and slot L and spring 0, substantially as and for the purpose specified.

3. The combination of the handle A, having hub B and studsM and P, with ratchet-wheel 0, having shaft. D, furnished with annular groove E, and, further, with the nut or drill fitting into 'said groove, centerand feed screw receiving hole, center and feed screw H, screw H, carried by said shaft, and a pawl to con- F, working in said annular groove, pawl I, nect the ratchet-wheel with the handle, subhaving two legs, J J, notches or holes K K, stantially as and for the purpose specified.

5 and slot L and spring 0, substantially as and In testimony of which invention I hereunto I 5 for the purpose specified. set my hand.

4. The handle A, having hub B, in combi- ISAAC P. CORNOG. nation with ratchet-wheel 0, having shaft D, Witnesses: furnished with annular groove E, journaled R. M. HUNTER.

10 in said hub, screw F, secured in said hub and FRANCIS S. BROWN.