US1875490A - Wrench - Google Patents

Description

W. R. PHILLIPS, SR

WRENCH Filed Nov. 1951 Sept. 6, 1932.

In venfar. wimmwawfa.

Patented Sept. 6, 1932 UNITED STATES WILL AM nrnrnrirrs, $3., or TLA TQGEORG A WRENCH Application filed November 4, 1931. Serial No. 572,368.

This invention relates to wrenches andis concerned with that class of wrenches known as the monkey wrench, and the main object of the invention is to construct a wrench that I 5 is susceptible to quick adjustment being rigidly sustained in position while in operation; also, as quickly and easily released from such engagement; also, a wrench that is durable economical and one whose parts may 10 be easily removed and replaced, should any become disabled or broken.

A further object is to provide a movable jaw sustained on an annular toothed shank having a fixed jaw through the medium of an 15 annular toothed threaded nut attached to a headed screw pin in connection with an annular toothed prism containing an annular cavity; said cavity containin a closed spiral spring (capable of longitudlnal expansion) ggsaid pin nut and prism acting together tobring about a closer connection of the jaws after being locked on the shank.

A further object is to provide strength, durability and absolute immobility of jaws 25 while in operation.

WVith the above and other objects in View the invention consists in the construction, combination and arrangement of parts set forth in the following specification and fall e. ing within the scope of the appended claims. In the drawing Figure 1 is a side elevation of a wrench (with a portion cut away) constructed in accordance with the present invention. Figure 2 is a transverse sectional view on line 22 of Figure 1, Figure 3 is a perspective view of an annular toothed threaded nut having a leaf shaped lever attachment. Figure 4 is a side View of an annular toothed prism containing a spiral spring in an annular cavity.

Referring to the drawing in detail, 1 designates the wrench in its entirety (excepting.

its cut away portion). The said wrench includes a stationary jaw 2 which is formed with a right angular shank 3 (being tapered and threaded to receive awooden handle) and on which a jaw 4 is mounted for slidable movement upon the shank 3. The shank has its upper face at a distance from its head 2, 5o provided for a suitable distance with transreadily slide upon the shank 3, of the jaw 2 versely arranged annular teeth 5. Movable' jaw 4 includesa head 6,to which isintegrally attached a carriage 7 The carriage and head have their lower portions provided with .a

rectangularopening, so that the jaw 4 may The carriage above its longitudinal shank res ceiving. passage is provided with a transverse opening 8 which communicates with said longitudinal passage. The inner transverse. wall provided by 8, that is the wall adjacent head 6 of 'the j aw 4 is formed with an annu lar longitudinally extending depression or bore 9, while the outer wall 10 provided between the opening and the end of the carriage is formed with a longitudinally extending annular passage 11. The passage and bore are adapted to receive the nonthreaded' portions, 12 and 13 of the headed screw pin: member 14. The threads 15 of said screw pin are adapted to engage with the threaded bore 16 ofthe nut member Figure 8. This nut isiannularon the upper andlower out- 1 sides and toothed as indicated at 18, andr19.

to conform to teeth 5 of shank 3, and teeth 17 (see Figure 4 and 1) and to co-act with screw pin 14, both to lock jaw 4 on shank 3 and to secure a closer adj ustment between stationary jaw 2, and sliding jaw 4 in any position along the shank. This.is-acconiplished when the leaf-lever Figures 2 and 3 is pressed into. the position shown in solid lines in Figure 2. The dotted lines in Figure 2 shows the position of lever when open and ready to be placed in any other position. It will be noticed in the: drawing Figures 2 and 3 that the annular shape ofthe teeth in the nut member Figure 3 are not an exact circle and that the outer threads or teeth 18 and 19 are considerably drawn in as they terminate in the smooth out 90 side surface of the vertical walls of Figures 2 and 3, 21. This is done to secure a properv meshing of the teeth or threads in effecting. acoupling. The top of leaf lever 20 has a, tongue and a latch 22 is grooved to conform thereto. A screw pin 14 is swivelly secured in the annular cavity 9 by a machine screw 24 engaging in groove 23 onthe nonthreaded portion of said screw pin: That Illlt Figure 3., Y 1 J In the operation of the wrench on rotation of the pin 14 in one direction the nut member will remain stationary while drawing carriage 7 toward stationary jaw 2, and at the same time prism Figure 4 will recede from jaw 6 projecting through wall 10 provided by opening 8 see dotted lines 27. By reversing the action of screw pin, release is likewise accomplished then the spiral spring 28 Figure 4 being out stretched during the former operation likewise closes with the latter and re-- turns the prism member Figure 4 back to its normal position, this spring being'incased in an annular cavity or bore in the end 29 of the prism Figure 4, and hooking in a like cavity bored in wall provided by opening .8 in aw 6 secured by amachine screw 30 in each end. The latch 22 is also secured by a machine screw 31 and spring washer to jaw 7.

It will not be amiss to mention here that should the spiral spring 28 or latch 22 or both at the same time become broken, it will not prevent the eificient holding and operation of the wrench; but only hampers the resetting and retention of sliding jaw 7 in position. Though clumsily and awkwardly the wrench may continue in eflicient operation .until said parts are replaced.

From the above description, taken in connection with the accompanying drawing, the simplicity of the device as well as advantages thereof will it is thought be quite obvious to those skilled in this line of endeavor without further description.

I claim:

1. A wrench of the class set forth a stationary jaw on an angular shank provided with annular threads or teeth on its upper side facing a movable jaw arranged upon the shank, said movable jaw including a head and carriage having a transverse opening, a headed and threaded screw pin member arranged in the carriage and positioned cen trally, transversely and just slightly above the toothed shank in the opening of the carriage longitudinally in a suitable position for threadedly engaging in a threaded nut, said nut also having an annularly shaped toothed top and bottom for engaging in like teeth on the shank below and a longitudinally slidable prism above containing also like teeth. to secure the said jaw in an absolute immovable position on shank.

2. A wrench of the class set forth a sta tionary jaw on an angular shank provided with annular threads or teeth on its upper side facing a movable jaw, arranged upon the shank, said movable jaw including a head and carriage having a transverse opening, a headed and threaded screw pin member arranged in the carriage and positioned centrally, transversely and just slightly above the toothed shank in the opening of the carriage longitudinally in a suitable position for threadedly engaging in a threaded nut, said said carriage to engage one end of a leaf lever on said nut tosecurely lock the same in operative position.

.In testimony whereof I do this day aifix my signature Apr. 19th 1932. v

V 7 WILLIAM RUSSELL PHILLIPS, Sr.

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