US1529131A - Wrench - Google Patents

Description

Mmh 10; 1925.-

1,529,131 E. B. JENKINS y v WRENCH Y Fild'lh. 12, 1924 (abbot nu;

Patented Mar. 10, 1925.

UNITED STATES ETI-IEL BIRT JENKINS, OF BAY, ARKANSAS.

WRENCH.

Application filed January 12, 1924.

To all 'whom t may concern:

Be itknown that I, ETHEL BIRT JENKINS, a citizen of the United States, residing at Bay, in the county of Craighead and State of Arkansas, have invented certain new and useful Improvements in Wrenches, of which the following is a specication, reference being had to the accompanying drawings.

This invention relates to tools, particularly to wrenches, and has for its object the provision of a novel wrench for use in connection with bolts, nuts, pipes or in fact any other objects to be turned, means being provided for making the adjustment an eX- tremely simple matter.

An important and more specific object is the provision of a wrench of this character having the relatively fixed jaw carried by a pivoted section whereby the two jaws will not be disposed in parallelism when the wrench is engaged upon an object, the advantage being that a positive grip will be assured.

Another object is the provision of a device of this character in which the adjustment is of such a nature that it may be operated by one hand, thus enabling the wrench to be used in very close quarters where those of the ordinary variety would not be convenient.

An additional object is the provision of a wrench which will be simple and inexpensive in manufacture, positive in action, efficient and durable in service, and a general improvement in the art.

With the above and other objects and advantages in View, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the wrench showing it engaged upon a nut, parts being broken away and in section; Y

Figure 2 is an edge elevation;

Figure 3 is a cross section.

Referring more particularly to the drawings, I have shown the device as comprising an elongated shank or handle 10 which has its edges rounded off to make a more convenient grip and to avoid injury to the hand of the operator. At one edge this shank or handle is formed with a plurality of ratchetshaped teeth 11 and at the end of the series there is provided a rib or projection 12 for a purpose to be described. At one end, this Serial No. 685,903.

shank terminates in a reduced extension 13 having a V-shaped notch 14 in its end and also having a transverse hole 15 therethrough.

rl`he relatively stationaryjawl is formed upon a shank section 17 which terminates in spaced ears 18 engaged upon opposite sides of the extension 13 and pivoted thereto by a pin or the like 19 which passes through the ears and through the hole 15. Within the fork defined by the ears is a V-shaped projection 2O which fits within the notch 14 and which is engageable within opposite sides of the notch for limiting swinging movement of the section 17 with respect to thc major portion of the/shank or handle.

Slidable along the shank is a carriage 21 of a sleeve-like nature and having one edge 22 constituting the movable jaw co-operating with the jaw 16. This edge and the confronting face of the jaw 16 are preferably toothed, grooved or otherwise roughened to prevent slipping when engaged upon a pipe or other object to be turned. The carriage is formed with a longitudinal passage 23 for the accommodation of the shank and the opposite edges of this passage are curved outwardly away from the shank so as to define a lip 24 at one edge. Secured within the passage at the side thereof disposed toward the untoothed edge of the shank is a leaf spring 25 which bears against the shank and which holds the lip 24 in co-operative relation to the teeth 11. The passage 23 is slightly larger than the shank so that the lip 24 will clear the teeth 11 when the carriage is pushed down onto the shank in such a way as to compress the spring 25 to permit the carriage to be slid back along the shank or away from the jaw 16.

The device is used by engaging the jaws upon a nut, bolt, pipe or other object to be turned, and then merely pressing the carriage toward the jaw 16. The lip 24 ratchets over the teeth 11 s0 that return movement of the carriage will be positively prevented until the operator presses down at the depression 26 on the carriage for compressing the spring 25 whereby the carriage may then be slid freely along the shank without engagement of the lip with the teeth.- The projection 12 is for the purpose of prevent'- ing the carriage from sliding too far along the shank. The vpivotal connection of the section 17 with the major portion of the shank is an important feature as the jaws of the wrench will permit it rto lact in a manner familiar vto the action of a Sdtillson Wrench, a feature which is highly advantageous when turning round objects.

While I have shown and described the preferred embodiment of the invention, it is to be understood that I reserve the right to make such changes inthe form,construc tion and arrangementof parte as will not depart imm the lSpirit 0f the aventi-011 V0,1

' the Scepeeftheiibiaiaedlaim Having thus deseaba@ my invention: I claim:

A Wreath @empfangenenligne! member havin-g en@ end ,getaway at @emite Sides t0 z-. .1.elf1f.1 a reduced ".ea-teniien, @Said QX- 'tension being Ormed Witv d handle i l o A l a V-ehaped mmh Qpenig mit t0 @the 0.11 may ,Sides, a jaw inluding a 'bifuroated shank portion 'straddlingly engaged upon said extension and pivoted-theeto,-the bight portion of the bifurcation being V-shaped to define inclined surfaces cooperating With the Walls of the inotoh whereby the pivotal movement of the jaw With reSpeot to the handle will be limited in both directions, .and a cagliriag .ferm/@d with @jaw @Generating with the tilrst-. .nzuned slidably adjustably viewer-e

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