US616579A - Double-grip sliding-jaw wrench - Google Patents

Description

Nu. 6l6,579. Patented Dec. 27, I898.

- J. J. A. MILLER.

DOUBLE vGRIP SLIDING JAW WRENCH. I (Application filed Aug. 6, 1898.) (No Model.)

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.IOllX JACOB ADOLF MILLER, OF DENVER, COLORADO.

DOUBLE-GRIP SLlDlNG-JAW WRENCH.

SPECIFICATION forming part of Letters Patent No. 616,579, dated December 27, 1898.

Application filed August 6,1898.

T aZZ whom it may concern Be it known that I, J onx J noon AnoLF MIL- LER, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Double-Grip Sliding-Jaw \Vrenches; and I do declare the following to be 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 the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in nut, bolt, and pipe wrenches; and the objects of my invention are, first, to provide a double-grip sliding-jaw wrench in which the movable jaw is slidably moved on the wrench-bar by one hand of an operator and placed against the nut, bolt, or pipe to be turned and in which the movable jaw when set against an object will lock itself with a double grip to the wrench-bar, and, second, to provide a simple, durable, and quick-setting wrench, I attain these objectsby the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a wrench embodying my invention, showing a vertical central section through the movable jaw. Fig. 2 is a top plan View of Fig. 1. Fig. 3 isa perspective view of the sliding jaw. Fig. 4c is a perspective View of the gripping-lever. Fig. 5 is an end elevation of the fixed jaw, showing a removable stationary jaw bolted to the end of the wrench-bar and represents in this respect a modification of Fig. 1; and Fig. 6 is a sectional side elevation of Fig. 5, showing a fragment of the wrench-bar.

Similar numerals of reference refer to similar parts throughout the several views.

Referring to Fig. 1, the numeral 2 designates the wrench-bar, on the end of which I preferably form integral with the bar a stationary jaw On the bar I mount a movable jaw 4:. It is provided with a square hole 5, the roof and floor of which slope at an oblique angle to the vertical axis of the body of the jaw and form two oppositely-disposed pawls 0 and 7 at the points which engage the opposite sides of the bar. These sloping walls are arranged substantially parallel with one an- Serial No. 687,945. (No model.)

other and with the roof-wall arranged with its lower end, which I will term the upper pawl 6 of the jaw, toward the handle end of the wrench and in engagement with a ratchettooth rack 8, cut in the top of the wrench-bar, its diverging slope from the top of the bar forming a clearancespace which allows the top of the jaw to be tipped toward the fixed jaw far enough to raise the pawl edge out of the ratchet-teeth. The bottom pawl 7 of this jaw is formed by the sloping bottom of the hole 5 similar to the pawl 6. The pawl engages a ratchet-tooth rack 9, cut into the under side of the wrench-bar. This ratchetrack may be dispensed with, if desired, however. The clearance-space formed by the slope of the bottom of the hole allows the pawlpoint to be raised out of the teeth of the rack 9 when the jaw is tipped toward the fixed jaw of the wrench.

Below the wrench-barI pivot to the heel of the sliding jaw a gripping-lever 10 by arivet 11, and below the rivet I place a spring 12 in a recess 13, which expansively bears against the lever near its lower end, which depends below the spring and is preferably curved toward the fixed jaw. The top 14 of this lever is arranged to bear at 15 resiliently against the teeth, while the opposite end 17 of the top portion is beveled on top to allow the lever to move away from the wrench-bar when its handle end is moved toward the fixed jaw. This lever operates to hold the sliding jaw normally in a vertical position on the wrench-bar, as its spring forces its top portion against the under side of the bar and draws both of the gripping-pawls into engagement with the teeth, and in order to slip the jaw along the bar it is necessary to trip this lever by applying a finger to its lower end and move it so as to throw its top end away from the bar and then tip the jaw toward the fixed jaw far enough to raise the pawls clear of the tops of the ratchet-teeth, when it can be moved easilyalong the bar andis simply moved against any nut, bolt, or pipe it is de sired to use it on, and the lever, when released, moves up against the bar and draws the pawls into the rachet-teeth.

In Figs. 5 and 6 I illustrate the fixed jaw as an independent member from the wrench-bar and removably secured to it, and while I may use any convenient method of attaching the fixed jaw to the wrench-bar, such as pinning or threading it to the end, Ipreferably attach it in-the following manner: Through the fixed jaw I form a square hole 18, and on the end of the wrench-bar I form a square end 19 and fit it into the hole 18. A threaded end is formed at the outer end of the square portion, to which is threaded a nut 20, which is screwed against the jaw and clamps it against the shoulder 21. The jaw is thus removably secured in a fixed position on the wrenchbar, and when it becomes worn, battered, or broken from use may be easily removed and replaced by a new jaw. Upon the opposing faces of both jaws I cut oppositely-disposed teeth 22, which are adapted to hold an object placed between them against slipping. Upon the opposite end of the wrench-bar from the jaw I secure in any convenient manner a suitable handle 23.

My improved wrench is very simple in construction and is quickly set and changed to engage nuts and pipes and bolts of dilferent sizes, and it possesses an advantage over wrenches of the screw-and-nut type in use, inasmuch as wrenches of similar lengths almost the whole length of the wrench-bar can be utilized by the jaws and about double the distance between the jaws is obtained, thus enabling them to engage much largernuts, bolts, and pipes than other wrenches of the same lengths.

against the wrench -bar and hold the said pawl-points in normal engagement with said toothed rack and said jaw in a vertical position, substantially as described.

2. The combination in a wrench, of a wrench-bar having a fixed jaw and a handle and ratchet-teeth in its top and bottom edges and a sliding jaw arranged to slide back and forth on said wrench-bar and arranged to grip the ratchet-teeth of the top and bottom edges of said wrench-bar when in operative position and a spring-controlled lever-bar arranged to hold said sliding jaw in operative vertical position on said bar, substantially as described.

The combination of the wrench-barhaving ratchet-teeth on its opposite edges with a fixed jaw removably secured to the end of said wrench-bar and a movable jaw slidably mounted on said wrench-bar and arranged to engage said ratchet-teeth at diagonally opposite points of the aperture in said jaw through which said wrench-bar passes and to hold said jaw against slipping back when in engagement with an object, and a spring-controlled lever arranged to resiliently hold said jaw normally in operative position, substantially as described.

4. The combination of the wrench-barprovided with ratchet-teeth and having a fixed jaw, a jaw slidable on said wrench-bar and adapted to be locked at any desired pointin the length of said bar to said ratchet-teeth, with a grip-lever pivoted to said sliding jaw and a spring arranged to hold said lever in resilient contact with the under side of said wrench-bar and adapted to hold said sliding jaw in operative position on said bar and in engagement with said ratchet-teeth, substantially as described.

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

JOHN JACOB ADOLF MILLER.

Witnesses:

CLAUDE A. DUNN, BEssIE THoMPsoN.

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