US2462364A - Pivoted side-jaw wrench having manually-controlled slidablewedge lock - Google Patents

Description

Feb. 22, 1949. E, E, CQOPER 2,462,364

PIVOTED SIDE-JAW WRENCH HAVING MANuALLY-CONTROLLED sLIDABLE-WEDGE LocK Filed July 11, 1947 A TTGRIY EYS.

Patented Feb. 22, 1949 OFFICE PIVOTED SIDE-J AW WRENCH HAVING MAN UALLY- CON TROLLED SLIDABLE- WEDGE LOCK Ernest E. Cooper, La Fayette, R. I.

Application July 11, 1947, Serial No. 760,395

1 Claim.

This invention relates to a wrench of the type which is maintained in engagement with a nut or bolt head which itis desired shall be worked upon so that it will be unnecessary to remove the wrench for a fresh grip on the Work.

Wrenches of this general type have usually been formed with some sort of ratchet which is relatively expensive to manufacture or the wrenches depend upon some spring action which may yield when heavy pressure is applied so as to become ineffective.

One of the objects of this invention is to provide a wrench which has the desirable quality of a ratchet wrench without a ratchet being used.

Another object of this invention is to provide a Wrench which may be moved about the nut by releasing one of the jaws and which wrench will cause the movable jaw to follow back into engagement with the nut as relative movement of the wrench and nut occur.

Another object of this invention s to provide a thumb controlled member which may be moved to prevent relative movement of the jaws when in engagement with the Work so that the required amount of torque may be applied to the work when desired.

Another obj ect of this invention is to mechanically cause the thumb controlled member to move out of engagement with the movable jaw, it being only necessary to apply pressure-of the thumb for locking the same in position.

Another object of this invention is to provide a construction which will be relatively simple to manufacture.

With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claim.

In the accompanying drawings:

Fig. 1 is a sectional View of the wrench;

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a section on line 3-3 of Fig. 1;

Fig. 4 is a sectional view of the body member with the fixed jaws thereof;

Fig. 5 is a side elevation of the wrench;

Fig. 6 is a plan view of one of the movable jaws;

Fig. 7 is an end view of the jaws shown in Fig. 6;

Fig. 8 is a sectional view through one of the control members.

In proceeding with this invention, I provide a body member which is suitably slotted for the reception of the various movable parts which are mounted thereon. These movable parts consist of a movable jaw to cooperate with the xed jaw, carried by the body at either one or both ends, and a sldably mounted control member which moves into and from engagement with each movable jaw to hold it in gripping relation or move it to gripping relation. Springs may be provided causing the jaw to move in one direction and also a spring may be provided for causing the control member of the jaw to move in one direction, the thumb being used for moving the control member and in turn the movable jaw in the other direction. The structure may be formed of a solid piece of stock suitably grooved for the reception of the operating parts.

With reference to the drawings, I0 designates the body which is provided with Xed jaws II at either end which may be formed as one piece with the body. The movable jaw is designated generally I2 and consists of a portion I3 to cooperate with the fixed jaw II, thus providing a surface I4 to engage the diametrically opposite portion of the work from the surface I5 of the jaw II. This jaw I2 has a leaf portion I6 which will enter a slot I'I in the body portion Il] so that this leaf portion I6 will be pivoted by means of pin I8 for rocking movement relative to the body member I0. This leaf I6 is provided with an abutment arm I9 against which a spring 20 acts while the other end of the spring 20 acts upon an abutment 2| so as to swing the jaw I2 about the pivot pin I8 to move the surface I4 toward the surface I5. An arm 22 also extends from the jaw I2 and is of such shape that it will present a wedge-shaped opening 23 between the surface 24 and the edge 25 of the body Il).

A control member 26 has a wedge-shaped end 21 to slide into this wedge-shaped opening 23 to prevent movement of the movable jaw I2 clockwise, as shown at the left in Fig. 1, about its pvot. This control member 26 has a portion which is substantially the same thickness as the body I, while it has a tongue portion 28 which enters a groove in the body I0 to be guided in its movement along the edge of the body I0. This tongue is also provided with a slot 29 through which a pin 30 extends and which pin is fixed in the body. A spring 32 acts between this pin and one end of the slot so as to move the control member 26 away from the movable jaw so that the jaw surface I4 can be moved out of nut gripping position. In order to limit the movement of the movable jaw I2 about its pivot, an abutment surface 35 (Fig. 4) is provided as a part of the recess for the reception of the leaf I6 and the leaf is provided with an ear 36 (Fig. 6) to engage this abutment surface and limit the movement of the jaw about its pivot.

A duplicate construtcion but of a different size range will be provided at the opposite end of the body I0.

spring 22 then causing it to move. to.the= right as..

shown in the upper portion of Fig. 1 and then the body may be swung counterclockwiseso. as, to move thesurfaces i4 and l5 about the nut to obtain a new grip. This action-willbepermitte by reason of the spring 20 permitting thejaw-to move about its pivot. When the wrench is adiusted for. the new. grip, the Spring-4 2.9. will move thesurfaces I4- and i5 intoengagement with the surfaceof the nutte` be gripped and then the wedge maybe moved by the thumb so as toprevent` separation ofthe surfaces Il!v andl and the nutmay'then againbey turned, This action may take placepvery rapidly by simple, movement of thecnfntrol member bytheV thumb as desired.

TheA ja .wja n;lv control members may be very easily made ofsolidstockhwith the leaf or tongue Cut downrom opposite sides of the stock for the purposes desireovl; The body would' bev made of s oliol'st.0. 3.ky .suitably slotted.

I claim:

InY a wrenchlak longitudinal body member havingtxedgtherewithone jaw of a nut receiving recess, a.,second j aw pivotedlito. saidjbody member on substantially theV longitudinal center line .thereof and rockable toward and from the xed jaw, a stop to limit movement of the second jaw toward the rst jaw, a spring to urge said second jaw against said stop, a control member slidably mounted on a longitudinal edge of said body and provided withh aJsurface inclined toy .said longitudinalbOd-r edg; saidsurfacmwhenisaid control member is manually moved'relative to the body .rnemben engaging the second jaw and urging it toward the rst jaw to grip a nut, and a spring to1 retract..V said control member when manual pressuregthereon4 is released, whereby said second jaw'will sw-ingagainst the action of its urging spring when the wrench is swung backwards around the nut in order to obtain a new grip thereonaV I ERNEST E. COOPER.

REFERENCES CITED Thejiollowing .references are of record in the le offthis pat.ent:

UNITED STATES' PATENTS.

Number. Name Date 11,160,737, McCurley.y Nov. 16, 1915 1,379,482. Spong v May. 24, 1921 1,540,451 Christleb.. June2, 1925 1,635,930. Eorsdah1, ..v July 12, 1927 1,924,393 Beery Aug. 29, 1933 2,152,708. Genard ,June`20, 1939 2,426,191. Feiringf` A ,Aug. 26, 194,7

FOREIGN s PATENTS Number Country Date 4,239; Great Britain Mar. 10, 1891

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