US1373779A

US1373779A - Charles o

Info

Publication number: US1373779A
Authority: US
Publication date: 1921-04-05
Anticipated expiration: 1938-04-05

Description

C. 0. TOOKER.

RATCHET SOCKET WRENCH.

APPLICATION FILED NOV.29., 1920.

1,373,779. Patented Apr- 5, 1921.

z y z amoewto'c UNITED srArss CHARLES 0. TUCKER, F

PATENT OFFICE.

RATGI-IET SOCKET-WRENCH.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed November 29, 1920. Serial No. 427,113.

' which the following is a full, clear, and

comprehensive specification and exposition, the same being such as will enable others to make and use the same with exactitude.

The object of this invention, broadly speaking, is to provide a tool for mechanical purposes which answers to the general term of ratchet socket wrench, the same being strong and durable in construction, neat and compact in appearance, easily operated'and controlled, and which can be manufactured and sold at a comparatively low prlce.

The more particular object of my invention is to provide a ratchet wrench which is quickly reversible in character, that is it is adapted to operate equally well clockwise or counterclockwise, and which may be reversed without moving the wrench from the work. I 7' 'Other minor objects and particular advantages of the invention will suggest them selves to the ordinary mechanic in the course of the following description, and that which is new will be correlated in the appended claim.

The preferred means for carrying out the principles of my invention in a practical and mechanical manner is shown in the accompanying drawings, in which-Figure 1 is a side elevation of the complete construction. Fig. 2 is a central longitudinal section of the main portion of the invention.

Fig. 3 is a cross section, as taken in the lines 3--3 of Figs. 1 and 2. And Fig. 4 is a perspective detail View of the dog and the spring therefor.

Similar indices denote like parts throughout the several views.

In order that the construction, the operation, and the advantages of this invention may be more fully understood and appreciated, I will now take up a detailed description thereof, in which I will set forth the several features as fully and as comprehensively as I may.

The invention comprises, primarily, the tubular body 1 having the cross-arm 2 disposed through its upper end as shown in Fig. 1. Numeral 3 denotes the stem, which is of such diameter as to snugly fit the interior of the body wherein it may revolve. Formed around in the center of the periphery of the stem 3 is the channel 4 to receive the inner end of the screw 5, the latter being threaded in an aperture formed in the lower portion of the body 1. A small cavity 6 is formed in the center of the upper end of the stem 3 which may contact with the ball 7, the latter being rigidly secured in the bore of the body 1 at the proper point to contact with the stemand relieve friction oflthe screw 5 with the wall of the channe 4.

riphery of the stem 8, and extending from the upper end of the stem'to near the channel 4, are a plurality of square-shouldered grooves 8, they being formed square in cross-section and they are located near each other, all as shown in Fig. 3, one of which is shown in Fig. 2.

The periphery of the lower portion 9 of the stem 3 is formed square, or other suit-v able shape, to be inserted in the reduced end portion of the socket wrench bit 10, whose lower portion is adapted to, fit around a nut or the like, however it is to be understood that bits of various size and shape may be employed, also bits may be provided for various kinds of work to be performed. Surrounding the body 1 and rigidly connected therewith is the collar 11, the same being located a short distance below the ball 7.

Numeral 12 denotes the main portion or body of the dog, the same being round in cross section. The outer end of the dog is formed fiat and at right-angles to the body, and threaded axially and centrally into the dog is the screw-eye 13, Whose head may be of any shape desired to form a suitable thumb-and-finger hold whereby the dog may be turned, it being understood that the threaded portion of the screw-eye is to be rigidly secured in the dog. Numeral 14 denotes a fiat spring whose length is about onefourth, or a little more, of the circumference of the collar 11 whose periphery it is adapted to fit. The stem of the screw-eye 13 is disposed through an aperture formed .70 Formed longitudinally of and in the peaperture '15 for the screw 16, which latter is threaded through the collar 11 and into the body 1, as in Fig. 3. The inner end of the dog 12 is formed with three faces: A, B and C. The face A is at right-angles to the axis of the dog, that is it is parallel with the outer end of the dog. The face B is at right-angles to the face A, that is it is parallel with the aXisof the dog. And the face C isat an acute angle to the other faces and toboth the axis and the outer end of the dog. The material between the faces B and G forms a'pawl or tooth which is adapted to enter in either one of the grooves 8, as shown in Fig 3, at which times the face B is adapted to enga e the edges of the grooves 8 while the face is adaptedto slide over said edges and itne-ver engages therewith, therefore if the dog be turned in one direction the face B will engagethe shoulders on one side'of the grooves 8, while if it be given I approximatelv'a half-turn then said face B will engage the shoulders on the opposite sides of thegrooves 8.

It'should benoticed that the spring 14:v

' permits the dog to slide outward and inward, but always holding it resiliently in engagement with the channels in the stem.

It is now apparent that the body 1 may, by meansjof the cross-bar 2, be turned alternately to the right andfthe left and each time as it turns'tothe right the face B will engage one edge of one of'the grooves'8 and thereby turn the stem 3 and the bit 10 to the right, and each time the body is turned to the left the stem and bit will not be turned as the face C will slide over the edges of the groove 8; But, now, if the screw-eye 13 versed and consequently causing reverse movements of the ratchet'operation, that is to say the stem 3 and the bit 10 will then be turned to the left when the body 1 is turned to the left and they will remain stationary when the body is turned to the right.

From the above it is manifest that I pro- 'vide a device containing the characteristics and the objects above enumerated.

I desire that it be understood that various changes may be made in the several details of construction, from that herein shown and described, without departing from the spirit of my invention and without sacrificing any of the advantages thereof which are new.

Having now fully shown and described my invention, what I claim and desire to secure by Letters Patent of the United States, is

A ratchet wrench comprising a tubular body, a cross-bar for turning the body, a stem rotatably mounted in the lower portion of the body and projecting downward therefrom, a ball secured in the body forming a bearing for said stem, means for retaining the stem in place in the body, there being channels formed in the periphery of the upper portion of the stem and extending longitudinally thereof, a collar surrounding the body and located below said ball bearing, a dog slidable in and out in an aperture formed through the collar and the wall of the body, a spring carrying said dog, means for securing the spring to the collar, and

means for inanually turning the dog to reverse the action of the ratchet connection of the dog with said grooves in the stem, all substantially as shown and described.

In testimony whereof I have hereunto subscribed my name to this specification in the presence of two subscribing witnesses.

CHARLES O. TOOKER.

Witnesses:

Roar. WV. RANDLE, R. E. HANDLE.