US2484492A - Segmental box-type wrench with pivoted levers - Google Patents

Description

Oct. 11, 1949. J. c. DINGLEY 2,

SEGMENTAL BOX-TYPE WRENCH WITH PIVOTED LEVEHS Fil ed Aug. 12, 1946 INVENTOR.

I 74 /z AZ Jah 1 1/flpin9Zey ATTORNEY Patented Oct. 11, 1949 :SEGMENTAL BOX-TYPE WRENCHWITH PIVOTED 'LEVERS .John C. Dingley, Rexburg, Idaho, assignor of onehalf to Sheldon J ."Morris, Pacoima, 1Calif.

Application August 12, 1946, Serial No. 690,005

2 Claims. 1

The invention relates to a hand tool, and more especially to a work enclosing wrench.

The primary object of the invention is the provision of a wrench of this character, wherein it is of the closed-end type, so that nuts located on tubes, pipes, rods or the like, as used on fuel lines, conduits, etc., which are inaccessible to box type wrenches, can be manipulated with ease and dispatch, the wrench being once fitted on a nut in an obscure and unhandy place, will not slip off in case the user's hand slips off of the said wrench.

Another object of the invention is the provision of a wrench of this character, wherein it is novel in construction, unique in the set-up of the same, it being handy for close work service, and is latched when engaged about the work, without possibility of slipping from place, and is convenient for operation thereof.

A further object of the invention is the provision of a wrench of this character, wherein it is adaptable for engaging a piece of work from either end thereof, as there are companion jaws at opposite ends of the same, these being of the closing-in type, and are latched together when in engaging position.

A still further object of the invention is the provision of a Wrench of this character, which is simple in construction, thoroughl reliable and eflicient in operation, readily and easily applied and removed to and from the Work, strong, durable, possessed of few parts, and inexpensive to manufacture and install.

With these and other objects in view the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention, and pointed out in the claims hereunto appended.

In the accompanying drawing:

Figure 1 is a plan view of the wrench constructed in accordance with the invention and in a work engaged position.

Figure 2 is an end elevation.

Figure 3 is a perspective view showing the wrench opened.

Figure 4 is a fragmentary perspective view showing a portion of a rod having a nut formation, with the wrench about to be engaged with the latter.

Figure 5 is a fragmentary plan view of one closing-in end of the wrench.

Figure 6 is an end elevation thereof.

Similar reference characters indicate correspending parts throughout the several views in the drawing.

Referring to the drawing in detail, the wrench constituting the present invention, denoted generally at A, comprises a pair of crossed levers in, each having the reversely curved outer portions ll, pairs of the latter matching each other adjacent to one another when the levers it are brought in parallel relation, one to the other.

On the end portions H of the levers ii! are oppositely disposed outwardly arched substantially half circular shaped work engaging jaws I2, the levers l0 being swingingly connected together side-by-side intermediate of their portions l I by a pivot in the form of a detachable fastener [3, so that such levers have an action for the engagement of the jaws I2 and the disengagement of the same, to and from a nut, the hextype thereof being generally denoted at B, in this instance formed on a rod, as identified at C, best seen in Figure 4 of the drawing.

The opposed jaws I! at their inner surfaces are corrugated as at M, so that these jaws when closed-in on a nut will firmly grip the same to prevent relative slipping movements therebetween. The opposite jaws l2 at their outermost terminal portions are provided with interlocking keepers l5 which function as latches for holding the said opposite jaws fastened together when embracing a piece of work, as for example a nut B, and thereby maintaining a positive engagement, in case the users hand slips off the wrench.

This type wrench is designed to facilitate use of a closed-end wrench on a hex unit nut located on a pipe, tube, fuel line, conduit, etc., which is inaccessible to box wrenches, and involves all advantages of the closed end wrenches.

The jaws l2 when approaching each other at opposite ends of the levers become automatically latched together, as should be obvious from Figures 1 and 5 of the drawing, and also as at Figures 2 and 6 thereof.

The portions ll reversel off-set the jaws in their pairs at opposite ends of the wrench A, as will be apparent from the drawings, which enables convenient leverage thereto.

What is claimed is:

1. A wrench of the kind described, comprising a pair of elongated levers arranged side-by-side for matched relation to each other, a pivot connecting the levers intermediate of their length for side-by-side swinging movement in and out of matched relation to each other, and laterally projected socket forming jaw portions on the levers which will match to encircle a piece of work 3 when the levers are brought to a matched relation to each other.

2. A wrench of the kind described, comprising a pair of levers arranged side-by-side for matched relation to each other, a pivot connecting the levers intermediate of their length for side-byside swinging movement in and out of matched relation to each other, a laterally projected socket forming portion on each lever which will match to encircle a piece of work when the levers are brought to a matched relation to each other, and means interlocking the jaw portions when the levers are in matched relation for preventing lateral spreading thereof.

JOHN C. DINGLEY.

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

UNITED STATES PATENTS Number Name Date 269,902 Wheeler Jan. 2, 1883 784,151 Gilchrist Mar. 7, 1905 m 1,261,540 Hughes Apr. 2, 1918 1,343,882 Woodward June 15, 1920 1,448,622 Frese et al. Mar. 13, 1923 1,481,517 Kurz Jan. 22, 1924 FOREIGN PATENTS 15 Number Country Date 424,577 Germany Jan. 26, 1926

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