US1116548A - Ratchet-wrench. - Google Patents

Description

W. S. BELLOWS.

RAIGHET WRENCH.

APPLICATION III-ED DEO.16, 1912.

Patented Nov. 10, 1914.

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WARREN S. BELLOWQ, 0 WORCESTER, MASSACHUSETTS.

IRATCHET-WRENGI-I.

Specification 01 Letters Patent.

Patented Nov. 10, 1914.

Application filed December 16, 1912. Serial No. 736,948.

To all whom it may concern Be it known that I, "WARREN S. BELLows, a citizen of the United States, and a resident of the city and county of Worcester, in the Commonwealth of Massachusetts, have in vented certain new and useful Improvements in Ratchet-lVrenches, of which the following isa full and exact description.

The object of this invention is the construction of an improved ratchet wrench wherein the revolving head is located in a wire seat and operated by a handle of wire.

Referring to the drawings forming part of this specification, Figure 1 is a side View of a wrench embodying one form of my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a side view partly in section of a modification of the wrench. Fig. 4: is a cross section on the line XX in Fig. 3. Fig. 5 is a side View of the preferred form of the invention. Fig. 6 is a longitudinal section of the latter. Fig. 7 is a cross section on the line YY in Fig. Fig. 8 is a cross section on the line ZZ in Fig. 5.

In each of the forms of my invention illustrated, the head 1 formed with a wrenchsocket 2 is circular in outline, with a groove 3 in its peripheryhaving its bottom or inner face provided with ratchet teeth 6, as in Figs. 2 and 6. A. wire rod l passes about said head in said groove, and a pawl 5 is provided for checking the rearward rotation of the head.

In the construction shown in Figs. 1 and 2, the wire rod 4t is bent nearly doubleto embrace the head 1, with its terminal sections parallel with each other, but stepped so that the outermost part of the terminal sections are nearer each other than the parts adjacent to the head. On said outermost parts 9 is mounted a flattened sleeve 10 to serve as a handle, and on the innermost parts 11 is mounted a cross head 12 having a socket 13 therein receiving an end of the pawl 5 whose opposite end engages the teeth of the head 1. A screw 15 fitting a notch in the pawl keeps the latter from withdrawal from its socket; and a spring 16 keeps the pawl pressed into its engagement with said teeth 6. A wire 17 bent about the sections or parts 11 holds said sections from spreading apart under the strain of use, and also insures the pawl against lateral displacement.

Fig. 3 illustrates a form of the Wrench which is provided with a revolving head at each end, so that a single tool can have two sizes or shapes of wrenclrsocket, each end composing the handle for the other. Here the ends of the red are brought together and fixed within the cross head 20, and the pawls are in a single length of rod held in said cross head by a screw 15 in the same way as in the wrench above described.

The preferred form of wrench illustrated in Figs. 5 to 8 has its red terminals arranged in the same way as first described, but instead of the sleeve 10, narrow bands 21, 22 are employed for fastening said terminals, and a straight rod 23 is introduced between said terminals, having an end tightly enter ing the block 24-. The sections 11 of said terminals pass for nearly their entire length through said block, which is preferably split into two parts fastened together by screws or rivets 25. Within said block is a recess 26 within which loosely rests a pawl 5 given ample play for permitting the head 1 to revolve in one direction, while a turn in the opposite direction is immediately resisted by said pawl. A spiral or helical spring 29 fitting in a recess in the block and a notch in the pawl, acts both to press the latter into engagement with the ratchet teeth 6, and to hold the pawl in the recess 26. Said block 21- is formed with a lip 30 hugging close against the bend 31 of the wire rod and designed to brace the same against flattening out under the strain of use.

This form of ratchet wrench is especially made for heavy work, and is capable of withstanding very powerful strains. The three-ply handle is practically a truss and will. not bend, and is absolutely incapable of breaking. The wrench is therefore perfectly adapted for linemens use, as it is not only effective and powerful, and will not break if dropped or even thrown from the top of a pole.

Since the pawl 5 butts end on against the bottom of the recess 26 in the block 24, and the latter is in contact with the bends82 of the rod terminals and cannot be pushed farther away from the ratchet head 1; and since the same bends 32 are holding the rod in place about the head, there can be no give to this wrench, but its turning power is very great.

What I claim as my invention and for which I desire Letters Patent is as follows, to wit 1. The combination with a circular head having a toothed groove in its periphery, of a length of metal rod bent about said head in the groove and having its terminalssubstantially parallel, a block inclosing a part of each of the terminals close to said head, said terminals being constructed to prevent said blocks sliding thereon away from said head, an inclined recess being formed in said block facing said head, the recess being wider at its mouth than at its inner end, a section of metal rod terminally seated in said recess against the bottom thereof, a recess being formed in said block transverse to the first-named recess, and a helical spring located in said transverse recess for pressing said section of rodinto engagement with the teeth in said groove.

2. The combination with a circular head having a toothed groove in its periphery, of a length of metal rod bent about said head in the groove and having its terminals substantially parallel, a block inclosing a part of each of the terminals close to said head, said terminals being constructed to prevent said blocks sliding thereon away from said head, said block being formed in two separable sections fastened together and having a tapering recess between said terminals facing said head and a transverse recess, a section of metal rod terminally seated in the tapering recess and a helical spring located in the transverse recess and pressing said section of rod into engagement with said teet 3. The combination with a head having a circular toothed groove therein, of a length of metal rod bent at midlength about said head in said groove and having parallel terminals, the outermost sections of which are ofiset to bring them nearer together than are the inner sections, means for rigidly connecting said outermost sections, a block penetrated by said inner sections, the ofi'sets acting as shoulders-for said block, and a pawl carried by said block in engagement with said teeth.

l. The combination with a head having a circular toothed groove therein, of a length of metal rod bent at midlength about said head in said groove and having parallel terminals, a block penetrated by said terminals near said head, a pawl carried by said block in engagement with said teeth, and a straight rod fastened to said terminals between the same and having one end set into said block.

5. The combination with a head having a circular toothed groove therein, of a length of metal rod bent about said head in said groove, a block penetrated by said rod, and a pawl carried by said block in engagement with said teeth, said block being formed with a lip disposed to support a portion of said rod within said groove.

In testimony that I claim the foregoing invention, I have hereunto set my hand this 9th day of December, 1912.

WVARREN S. BELLOWS. lVitnesses CHARLES A. SHEDD, ETHEL R. ALLISON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

. Washington, D. C." 1

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