US2454489A

US2454489A - Spanner wrench with means to grip the inner surface of pulley rims

Info

Publication number: US2454489A
Application number: US673308A
Authority: US
Inventors: Jerry J Sullivan
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-05-31
Filing date: 1946-05-31
Publication date: 1948-11-23
Anticipated expiration: 1965-11-23

Description

N0V 23,' 1948- J. J.. SULLIVAN SPA'NNER WRENCH WITH MEANS TO GRIP THE INNER SURFACE 0F PULLEY RIMS Filed May 3l, 1946 Jf/swycz Swan/fnv,l I

Patented Nov. 23, 1948 UNITED f STATES PATENT OFFICE 4SPANNER WRENCH WITH MEANS To GRIP Y THE INNER SURFACE oF PULLEY RIMS Jerry J. Sullivan, Huntington Park, Calif.

Application May 31, 1946, Serial No. 673,308

Claims. 1 j

This inve-ntion relates to a spanner Wrench which is particularly adapted for adjusting the valves of injectors of a Diesel engine, but may be used as a general purpose wrench.

One object of the invention is to provide a spanner wrench, so formed that it may be applied to a pulley wheel or the like and then caused to have binding grip with the inner sur.- face of the rim of the wheeland turn the wheel when transverse swinging movement-,is imparted to the wrench. i

Another object of the invention is to provide a wrench having a body formed with a head and a shank extending therefrom and carrying a handle which is pivotally mounted `and disposed along a handle at the rear end of the shank, the head having depending lugs or teeth spaced from each other and the `pivoted handle being connected with abar or strip extending longitudinally of the shank, so that when the handles are grasped and the pivoted handle swung towards the rigid handle, a tooth or finger at the front end of the strip will shift into engagement with the rim of the pulley and together with the teeth of the head iirmly grip the pulley and turn the pulley.

Another object of the invention is to provide a wrench wherein grip upon the pivoted handle which is naturally increased by strain exerted to turn the pulley will cause the teeth toA be brought into iirrner biting engagement withthe rim of the pulley and thus prevent the teeth from slipping and moving about the pulley 'circumferentially thereof instead of `turning `the pulley.

Another object of the invention is to provide a wrench consisting `.of a few number of parts which are of simple construction and" quite strong.

The invention is illustrated in the accompanying drawings wherein:

Figure 1 is atop view of the improved wrench;

Figure 2 is a View showing the Wrench partially in longitudinal section and partially in side elevation;

Figure 3 is a transverse sectional view taken along line 3-3 of Figure 1;

Figure 4 is a sectional view taken along line 4 4 of Figure 1;

Figure 5 is a view of the body portion of the wrench, and

Figure 6 is a side view of the bar or strip actuated by the pivoted handle ofthe wrench. f

This `Spanner Wrench hase :body or main section I formed of steel or other strong metal and Alopening (i of the head 2.

shapedl to provide a head 2, from which extends a shank 3 terminating in a rigid handle 4 having opposite faces formed with recesses 5. Through the head 2 is formed an opening 6 which flares towards its opposite ends and in `front of this opening the head has its outer face formed with a recess 1 of triangular outline.

Lugs 8 extend downwardly from the head at opposite sides .of the recess I and these lugs extend radially of the opening 6 and gradually in,- crease in depth towards their outer ends which are beveled or tapered from opposite sides `to form sharp ends yfor the lugs. The Vlugs constitute teeth for the head 2 and when the Wrench is applied to a pulley wheel 9 with its outer or front end resti-ng upon the rim I0 thereof, the sharp outer ends of the lugs or teeth will bear against the inner surface of the rim in spaced relation to each other circumferentially `of the pulley.

An opening II is formed midway the width of the body `I, at approximately the junction of the head 2 with the shank 3 and through this opening passes a tooth or finger I2 formed by bending the front end cf a metal bar or strip I3 which extends longitudinally of the shank and is seatedin a recess I 4 formed in the outer side face `of the shank. An arcuateslot I5 is formed longitudinally of the shank adjacent the rear endof the recess I4 and through this `slot passes a. pin I6 which also passes through an opening II formed throughthe rear end portion of the strip or bar I3.

The pin I6 also extends through the Aopenings I8 which areformedin theenlargedforward end portions I9 of the side walls `20 of a movable handle 2l. This handle is U-shaped in cross section and straddles the shank of the handle 4, a `pin 22 being passed through openings 23forined in the handle 2| and through an opening 22 formed in the shank 3 to pivotally mount the handle 2I and permit it to have swinging movement towards and awayfromA the rigid handle 4. When Athepivoted handle is swung away from `the-rigid handle, the bar I3 will be shifted forwardly and the teeth `t and ringer I2 may `be iitted into the `side' recess of `the pulley wheel l9 with the shaft `25 passing Vthrough the center The `two handles will .then .be graspedand pressure applied to swing .the `handle 2l towardshandle 4 and the bar I3 will be .drawn rearwardly and its ,nnger brought into `engagement with the inner surface of the flange of the pulley. This will `cause the sharp `cned outer 'ends :off-the teeth 48 to bite into .the

flange of the pulley and firmly grip it so that when the wrench is swung circumferentially of the shaft, the pulley and the shaft will be turned.

When force is exerted to turn the pulley, the gripping pressure upon the handles is increased and this will increase grip of the teeth upon the pulley. Therefore, the teeth will not slip circumferentially of the pulley and allow the wrench to be moved without turning the pulley. After the pulley has been turned as much as desired it is merely necessary to release grip upon the handles and the wrench may be readily removed from the pulley.

It will thus be seen from the foregoing description that I have provided a spanner wrench that will at all times be positive and eflicient in its operation and further can be manufactured at a very low cost.

While I have shown the preferred embodiment of my invention, it is to be understood that various changes may be made in the size, shape and arrangement of parts without departing from the spirit of the invention and scope of the appended claims.

Having thus described the invention, what is claimed is:

l. A wrench comprising a body having a head at its front end and a shank extending rearwardly from the head and terminating in a rigid handle, the head being formed with an opening and the shank with a longitudinally extending recess, there being an opening formedv adjacent the front end of the recess and a longitudinally extending arcuate slot near its rear end, said shank being formed near its rear end with an opening spaced transversely from the arcuate slot, lugs extending downwardly from the head forwardly of its opening and extending radially thereof and having their front ends beveled from opposite side faces to form sharpened front ends for the lugs, a movable handle U-shaped in cross section straddling the shank and the rigid handle and having front ends of its side flanges enlarged, a pin passing through the opening at the rear end of the shank and through side portions of the enlarged front 4end portion of the movable handle and pivotally mounting the movable handle, a strip extending longitudinally in the recess of the shank and having its front end portion bent to form a finger passing through the opening at the front end of the shank, the rear end of said strip tting under the enlarged front end portion of one flange of the pivoted handle, and a pin passing through the slot of the shank and through aligned openings formed through the rear end of the strip and side portions of the front ends of the flanges of the pivoted handle to pivotally connect the strip with the pivoted handle and cause the strip to be shifted longitudinally and its tooth moved towards and away from the lugs when the pivoted handle is moved.

2. A wrench comprising a body having a handle at its rear end, a shaft-receiving opening being formed near the front end of the body, the intermediate portion of the body being formed with a forward opening and adjacent its rear end with a longitudinally extending slot, lugs extending downwardly from the body and forwardly from the shaft-receiving opening radially thereof and sharpened at their front ends and constituting teeth for engaging the inner surface of a marginal flange of a pulley carried by a shaft about which the wrench is fitted, a handle pivoted to the body in straddling relation thereto for swinging movement transversely of the body, a strip extending longitudinally of the body and having its front end bent to form a finger passing through the forward opening, `and a pin passing through the slot of the body and through aligned openings in the pivoted handle and the rear end of the strip to pivotally connect the strip with the pivoted handle and cause the strip to be shifted longitudinally and its finger moved towards and away from the lugs when the pivoted handle is moved transversely.

3. A wrench comprising an elongated body having its forward portion formed with a shaft-receiving opening, there being a finger-receiving opening spaced rearwardly from the shaft-receiving opening, lugs carried by the body and extendingr forwardly from the shaft-receiving opening radially thereof, a strip extending longitudinally of said body and having a nger at its front end passing through the nger-receivin-g opening for engaging a pulley and forcing the lugs into gripping engagement Awith the pulley when the strip is shifted longitudinally rearwardly of the body, a rigid handle at the rear end 0f the body, a movable handle straddling the body transversely thereof and pivoted at a side of its front end for swinging movement transversely of the body towards and away from the same, and a pin pivotally connecting the rear end of said strip with the pivoted handle and causing the strip to be shifted longitudinally when the pivoted handle is moved and shift the finger towards and away from the lugs.

4. A wrench comprising an elongated body having a rigid handle at its rear end, lugs projecting from a side face of the front end portion of said body and diverging forwardly and sharpened at their front ends, a strip extending longitudinally of said body and having a finger at its front end passing through an opening formed in the body rearwardly of the lugs, and a movable handle extending longitudinally of the body at a side of the rigid handle and having its front end portion straddling the body and pivoted thereto and pivotally connected with the rear end of the strip for shifting the strip and its finger longitudinally of the body when the pivoted handle is swung towards and away from the rigid handle.

5. A wrench comprising an elongated body having a rigid handle at its rear end, wheel-engaging teeth spaced from each other transversely of the front end of the body, the body being formed with an opening spaced rearwardly from said teeth, a

JERRY J. SULLIVAN.

REFERENCES CITED The following references are of record in the iile of this patent:

UNITED STATES PATENTS Number Name Date 393,903 Hemans Dec. 4, 1888 446,545 Blodgett Feb. 17, 1891 738,216'y Littley Sept 8, 1993