US1902878A - Ratchet wrench - Google Patents

Description

March, 28,v 1933. N. F. MCNAUGHT ET AL 1.902,378

RATCHET WRENCH Filed June' 16. 1932 vPatented Mar. 28, 1933 UNIT-ED STATES Nonms F. MCNAUGHT AND EDWARD H. PETERSON, or cirronsro, IDLINoIsQAssIGNQRs To DURO METAL rnonncfrs COMPANY, oF-crrIcAGd ILLINOIS. A ooRPonA'rIoNoF ILLINOIS PATENT OFFICE- 11] 'RArcHn'r WRENCH ApplicationV led June 16,

Our invention relates to a ratchet wrench and method of making the same. the principal object of the invention being to provide a ratchet wrench which comprises relatively few parts 'which are completely and permanently assembledA in cooperating relationship without the employment of screws, rivets or the like. A coordinate object is to so form the wrench that it will be completed in its assembled form and its component parts secured in position by a single compressing operation.

In the accompanying drawing illustrating a preferred embodiment of our invention Fig. 1 is a side elevational view of the larger end of a drop forging constituting one of the elements of our improved tool;

Fig. 2 is a section taken on the line 2 2 of Fig. 1 and looking in the direction indicated by the arrows;

Fig. 3 separately illustrates in side elevation the several elements which are intended to be assembled with the aforesaid forging in the manufacture of our improved ratchet wrench;

Fig. 4; is a view similar to Fig. 1 but showing the socket-ratchet, its dog and cooperating spring, and one of the wrench side plates applied to the head of the handle forging;

Fig. 5 is a view partly in section and partly in elevation illustrating how the flanges of the forging head are caused to cooperate with the side plates to hold the several elements of the wrench in cooperating relationship without the use of rivets, screws or the like; and

Fig. 6 is a view in perspective of the completed wrench.

Similar characters. of reference refer to similar parts throughout the several views.

Our improved wrench includes Van integral drop forging having a handle part 7 and the head 8.

On its side faces the forging head 8 is provided with symmetrical contiguous flanges 9 9 which border and project outwardly substantial distances Vfrom the parallel side plate seats 10 10. The inner surfaces 11 of the flanges 9 9 flare slightly away from their respective seats 10 10,

1932. Serial No. 617,522.

Saldi iii-lief Suaesf1l+ii tra@ flanges be'.

and its spring 16a. The better to accommodate the -ratch'etjdog 16 lthewall of the bore 14 is provided with ka semi-cylindrical, seat 17 (to receive thejpivoted rounded endV 1S ofthe dog) and with a plane faced 4notch 19 to accommodate the movements of the ratcheting endpof the dog.A

The Side. platesI 12 12 are provided with circular apertures 20-20adapted to receive andv journal the, cylindrical extremities 21 21 ofthe socket-ratchet ,member 15..V The said socket-ratchet element is alsopr vided on its outer surface, intermediateits cylindrical extremities `21 21,` 'withVKV the ratchet teeth 22 and,axially-, with the square or .other polygonal socket 23,'which preferable extends entirely through the socketfw ratchet Aelement from endito end. One of the pair vof symmetrical side plates "12 12 is conveniently provided with :a small apen-y ,f

ture 24Athr0ugh which oil may be `injected to` the working parts of thewrench 4after the several parts have been completely and permanently assembled in the manner vpresently to be described.Y

The assembly ofthe several parts, ofthe wrench is effected as illustrated in Figs. 4

and 5, the*socketfratchetelement 15 occupyf ing: the, forging head borex13,` the dog `16 occupying the forging `bore '14 (and particularly the seat 17 and notch 19 thereof),

the dog spring 16a being confined between c the dog and that portion of the bore 14 whereof the dog 16 is a chord, and the side plates 12 12 lying within the flanges 9 9, resting on seats 10-10, and serving to journal the cylindrical extremities 21 21of the socket-ratchet element 15.

With the several parts of the wrench assembled as just described, and as illustrated in Figs. l and 5, the Wrench head is inserted between and operated upon by opposed female dies 25-25, each of said dies being provided with outwardly flaring recesses adapted to receive the flanges 9 9 of the wrench head and to force the said flanges against the edges and over the outer margins of the side plates 12-12 firmly and permanently yto hold the said side plates against their respective seats 10-10 without any necessity for the employment of rivets, screws or the like to accomplish suchpur-l pose (see Fig. 5). Y

The dog 16 and its spring 16a cooperate with the teeth .Q2-22 ofthe socket-ratchet member in a Well known manner. Y

Having thus illustrated and described a preferred embodiment of our invention, as well as the preferred manner'of producing the same, what we claim is new and desire to secure by'Letters Patent of the United States is: f

A ratchet wrench comprising a handle member having an opening extending through it at the end thereof for the reception of a socket-ratchet member, a pawl and a spring bearing thereagainst, flanges on each side of the handle member extending in opposite directions and circumscribing said opening, seats occupying'parallel planes within the confines of the respective flanges and extending between said opening and the bases of said flanges, side plates resting against said seats and accurately lying within the embrace of said flanges, thethickness of said sidev plates being less than the height of said respective fianges,.a socket ratchet occupying said opening and confined therein by said side plates for'fcoaction with said -pawl, said socket ratchetl having cylindrical extremities, said side plates having opposed, aligned circular apertures which receive and constitute bearings for the `cylindrical extremities of the socket-ratchet member, the outer edges of said flanges in the nished article overhanging and contacting the outer margins of said side plates firmly and permanently toretain the several parts of the wrench in assembled relation. l

In witness whereof, we hereunto subscribe our names this 10th day of YJ une, 1932..

NoRRis F. MCNAUGHT. y EDWARD n. inrnnsoN.y

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