US967962A - Wrench. - Google Patents

Description

MARTIN K. OLSON, OF LOUISBURG, MINNESOTA.

WRENCH.

Specification of Letters Patent.

Patented Aug. 23, 1910.

Application filed May 3, 1910. Serial No. 559,229.

To all whom it may concern:

Be it known that I, MARTIN K. OLSON, a citizen of the United States, residing at Louisburg, in the county of Lao qui Parle and State of Minnesota, have invented certain new and useful Improvements in Trenches, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in wrenches of the quick adjusting type, and its object is to provide a simple, practical and efficient tool of this character which may be used as a pipe wrench, and also as a monkey wrench.

- With the above and other objects in view, the invention consists of the novel construction, combination and arrangement of parts, hereinafter fully described and claimed, and illustrated in the accompanying drawings in which:-

Figure 1 is a side elevation of my improved pipe wrench. Figs. 2 and 3 are detail longitudinal sectional views. Fig. 4 is a transverse section taken on the line 44 in Fig. 2. Fig. 5 is a detailperspective view of the retracting member, Fig. 6 is a similar view of the sleeve, and Fig. 7 is a similar view of the swinging member.

Referring to the drawings 1 denotes a body or shank of a wrench which has at one end a suit-able handle 2 and on its intermediate portion rack teeth 3, and at its other or outer end a cross head 4 formed at one end with an angular pipe wrench jaw 5, and at its other end with a fiat nut or bolt head engaging jaw 6.

7 denotes a slide in the form of a block mounted for movement longitudinally of the shank l and having on its outer end at one side a removable pipe-engaging jaw member 8, and on the other side of the same end a fiat jaw face 9, the latter co-acting with the jaw face 6, whereby the device may be used as a monkey wrench, while the jaws 5, 8, coact to permit of the use of the tool as a pipe wrench.

Hinged to the slide 7 on a transverse pivot pin 10 is a swinging member 11 within which is journaled a cog wheel or pinion 12 adapted to mesh with the rack 3 when the swinging member 11 is in its normal position. The teeth of the pinion 12 are shaped so that they engage the rack teeth 3, and also a worm 13 fixed on a shaft 14 journaled in the member 11. One end of the shaft 14 projects beyond the end of the member 11 and is provided with a finger piece 16, whereby the worm may be turned to rotate the wheel 12 and consequently shift the slide 7 longitudinally on the shank owing to the meshing of said wheel 12 with the rack. It will be noted that this worm gear adjustment enables very accurate adjustment of the movable jaw or jaws of the wrench after the wheel or gear 12 is in mesh with the rack 3, and that when the member 11 is swung outwardly to free the wheel or gear 12 from engagement with the rack, the movable jaw or jaws may be quickly moved toward or from the stationary aw or aws by shifting the slide 7. For the purpose of retaining the swinging member 11 in its normal position, catch springs 17 are provided on its opposite sides. These springs are secured at one end as shown at 18 and their free ends are adapted to engage seats 19 in'the main portion of the slide 7 and are formed with inclines 20 adapted to be engaged by a retracting member 21. The latter is U-shaped to straddle one side edge of the slide 7 and is slidably mounted on said slide, as shown at 22. The two side portions or arms 23 of the retracting member 21 are formed with inclined portions which co-act with the inclines 20 when the member is pushed inwardly, thereby disengaging the spring catches 17 from their keeper seats or shoul ders 19. A coil spring 24 is arranged within the slidable retracting member 21 for the purpose of actuating it in an outward direction and restoring it to normal position. A coil spring 25 surrounds the pivot 10 of the swinging member 11 and has one of its ends bearing against said member so as to swing the latter in an outward direction when the releasing member 21 releases the spring catches 17.

In operation, when it is desired to quickly shift the slide 7 on the shank for the purpose of adjusting the movable jaw or jaws, the member or part 21 is pushed inwardly so that the spring 24 will be compressed and the cam shaped arms 23 will release the catch springs 17 WVhen this occurs the member 11 may be swung out to the position shown in Fig. 3, to disengage the gear 12 from the rack'3, whereupon the sleeve or slide 7 may be readily shifted. After the slide has been thus adjusted to the desired position, the member 11 is swung inwardly until the catches 17 engage the keeper seats 19. When this is done, the wheel 12 meshes with the rack 3 and locks the slide 7 in adjusted position, although should a more accurate adjustment of the movable jaw or jaws be desired the finger piece 16 is turned to rotate the worm 13 and consequently the wheel 12, which latter owing to its engagement with the rack 3 will shift the slide 7.

Having thus described the invention, what is claimed is:

1. A wrench having a shank carrying a stationary and provided with a rack, a slide arranged on said shank and formin a movable jaw, a swingin member on sai slide, a tooth wheel journa ed on said swinging member to mesh with said rack, and a worm rotatable in said swinging member and in mesh with said tooth wheel.

2. A wrench having a shank carrying a stationary jaw and rovided with a rack, a slide arranged on sa1d shank and forming a movable jaw, a swinging member on said slide, a tooth wheel journaled on said swinging member to mesh with said rack, a worm journaled in said swinging member and in mesh with said tooth wheel, and fastening means for rigidly securing said swinging member to the slide.

3. A wrench having a shank carrying a stationary. jaw and provided with a rack, a slide arranged on sa1d shank and forming a movable jaw, a swinging member on said slide, a tooth wheel journaled on said swinging member to mesh with said rack, a worm journaled in said member and meshing with saidtooth wheel, a spring catch for retaining the swinging member in its normal position, and a releasing member co-acting with said spring catch.

4. A wrench having a shank carrying a stationary jaw and provided with it rack, at slide arranged on said shank and forming a movable jaw, a swinging member on said slide, a tooth wheel 'ournaled on said swinging member to mes with said rack, means for rotating said tooth wheel, fastening means for said swinging member, and a spring for retracting said swinging member when released by its fastening means.

5. A wrench having a shank carrying a stationary jaw and provided with a rack, a slide arranged on sa1d shank and forming a movable jaw, a swinging member on said slide, a tooth wheel j ournaled on said swinging member to mesh with said rack, means for rotating said tooth wheel, a spring catch for fastening said swinging member, and a releasing means co-acting with said spring catch.

6. A wrench having a shank carrying a stationary jaw and provided with a rack, a slide arranged on sa1d shank and forming a movable jaw, a swinging member on said slide, a tooth wheel journaled on said swinging member to mesh with said rack, a spring for actuating the swinging member to retracted position, a worm ournaled in the swinging member for rotating said wheel, spring catches carried b the swinging member, keepers on the side to receive said spring catches, and a slidabl mounted spring retracted releasing mem er carried by the slide and co-acting with said spring catches.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses. MARTIN K. OLSON. Witnesses: i

A. S. PERSEN, A. D. COUNTRYMAN.