US589681A - Wrench - Google Patents

Description

(No Model.)

H. ALTHOFF.

WRENCH.

Patented Sept. 7, 1897.

Inventor.

VVitnesses.

\ Attorney.

HENRY AL'lllOFF, OF

ArnN'r FFlCE;

MELROSE, ILLINOIS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 589,681, dated September '7, 1897.

Application filed April 3, 1897. Serial No. 630,572. (No model.)

To (6Z1: whom it iii/1.1; conceru.

Be it known that I, HENRY ALTHOFF, a citizen of the United States, and a resident of Melrose township, in the county of Adams and State of Illinois, have invent-ed certain new and useful Improvements in renches; and I do declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of a side view of wrench with slide in section and shank broken away to show spline. Fig. 2 is a side elevation of wrench. Fig. 3 is a section on line a:, Fig. 2.

ihis invention is designed to provide a combined pipe and nut wrench of improved character; and it consists in the novel con struction and combination of parts, all as hereinafter described, and pointed out in the appended claim.

Referring to the accompanying drawings, the letter A designates the bar or shank of the wrench, which is formed at one end with a handle portion A and at the opposite end with a T-head, which forms the two fixed jaws B and C. The face of the jaw 13 is straight and plain, while the jaw O has therein a large V-shaped notch 0', whose walls are provided with teeth or serrations c, which project at different angles.

D designates a slide which is fitted on the shank: A and which has in one wall of its longitudinal shank-receiving opening an offset longitudinal groove cl, which is engaged by a rib or spline a of the shank. Said rib or spline is toothed for a portion of its length, as indicated at a.

E designates a locking pawl or dog which is pivoted between lugs E of the slide and has a notch or recess a, which is designed to engage any one of the teeth a to maintain the slide in any desired adjustment on the shank.

E is a spring one end portion of which presses upon the offset free end portion E of said pawl, while its opposite end seats in a depression E of the slide. The portion has a stud around which the spring is seated.

V E is a thumhpiece or finger projection by means of which the pawl may be retracted.

The slide Dhas at one side, above the dog or pawl E, a lateral projection F, which forms a jaw opposite to and adapted to coact with the jaw B when the tool is used as a nutwrench. The other side of the slide is formed with a slotted or bifurcated lug 1-1, in which is seated a jaw-piece G, which has a sliding movement toward and away from the jaw C independent of its movement with the slide. Said jaw-piece consists of a head portion or jaw proper which is opposite the notch of the jaw C and is provided with transverse teeth or serrations g, and also of-an arm portion G, the whole being fitted to slide in the slot of the lug H.

K is a screw for actuating the said jawpiece. This screw has a bearing in a piece K, which extends transverselyacross the slot of the lug H, and its upper or outer end loosely engages the head or jaw portion.

L is a lug on the arm G, which engages a groove Z in the shank of the screw, whereby the jaw-piece is moved back and forth as the screw is turned.

In using the tool as a pipe-wrench the slide D is set to a point such that the opening between it and the jaw O is approximately equal to the diameter of the pipe or sufficiently large to admit said pipe between the jaw and slide. The jaw-piece G is then set up into firm engagement with the pipe. By the provision of this jaw-piece it is possible to not only secure a better and tighter grip on the pipe, but also to work with pipes varying considerably in their diameters without changing the adjustment of the slide as a whole.

It will he noted that the pipe is gripped between three opposing jaw faces, two of which are in wedging relation to each other, while the third is arranged to force the pipe against such wedging faces; also, that the three series of teeth or serrations with which these jaw-pieces are provided are all at different angles. This arrangement necessarily results in a very secure and powerful grip upon the pipe.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The herein-described combined pipe and nut Wrench, comprising a bar or shank having at one end a T-head which forms the two fixed lateral jaws B and O, and below said head a toothed spline, or rib, said jaw 0 having therein a V-shaped notch whose walls are toothed, the slide fitted to said shank and engaging said rib or spline, the spring-actuated locking dog or pawl carried by the slide and adapted to engage the teeth of said rib, or spline, the said slide having at one side a jaw projection F which opposes the jaw B, and at the oppo- 15 which engages an armof said jaw-piece, sub- 20 stantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY ALTH OFF r Witnesses:

LYMAN MoCARL, WM. G. FEIGENSPAN.

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