US1053181A - Wrench. - Google Patents

Description

, W. IRING.

WRENCH.

APPLICATION FILED JUNE 13. 1912.

Patented Feb. 18, 1913.

gvwe wfoz; I

' WILLIAM IRING, OF NEW YORK, N. Y.

WRENCH.

Specification of Letters Patent.

Patented Feb. 18,1913.

Application filed June is, 1912. Serial No. 704,370. r

To all whom it may concern:

Be it known that I, WILLIAM IRING, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Wrench'es, of which the following is a specification.

My invention relates to wrenches and'is an improvement upon the wrench comprised in the patent to Adalbert Iring, No. 1,028,883, dated June 11, 1912, the object being to provide improved means for securing the movable jaw in adjusted position, as will more fully appear in the following description and claim.

Referring to the accompanying drawing:Figure l is a side elevation of the wrench shown partl in section with the adjustable jaw locke Fig. 2' is a similar view as Fig. l with the adjustable jaw unlocked and the handle broken away, and

Fig. 3 is a view of Fig. 1 viewed from the right with the handle broken away.

The wrench comprises a handlea having a head I) fixedly secured or integrally formed thereon. The head is formed with a jaw 0 preferably positioned at the rear end thereof, and has a longitudinal chamber d passing through it. The wrench is provided with a fiat surface e having a longitudinal slot f communicating with the chamber below it. A movable jaw g is disposed to slide upon the surface 6 and is provided with a tongue h which engages with the chamber d to secure the jaw firmly in sliding relation on the surface a of the wrench. The union of the wrench and jaw may be made in several ways, the preferred type being made as.

shown, by formin the chamber d rounding at the top, and forming the tongue with rounding longitudinal flanges 0n eitherside to engage the rounding parts of the chamber. This makes a strong joint and one that .is simple to construct, but any form of joint of usual construction will answer the purposes of my invention.

The bottom of the tongue h is formed with teeth 71 for locking the jaw in adjusted 3' formed on a locking ar is disposed within the chamber d. The bar is secured to the chamber through means of the pin-Z and slots m, the pin preferably passing through the bar and the slots preferably being formed through the head of the wrench, although the reverse may be followed if desired.

The bar is is held normally up against the movable jaw g by means of a spring n secured to one endof the bar as by the screw 0, and curved or bent to set upon the base of the chamber at its middle portion, and to contact with the bar at its opposite end. The spring is in this position, under tension to enable it to hold the bar firmly against the jaw. By this construction the bar and jaw are always looked together, as shown in Fig. 1, unless the bar is manually operated to disengage them. This is accomplished by forcing the forward end ofthe bar downward as shown in Fig. 2, the barbeing extended beyond the chamber to form the bandle p to manipulate its movement downward. When the bar is thus moved downward the jaw g is free to be slid in either direction to adjust it relative to the fixed jaw c to accommo-date the nut (not shown) on which the wrench is to be used. When the bar is released it springs into engagement with the jaw and .firmly holds it ready for use. Where the jaw is open wider than is necessary, it may be moved to proper position without manually'depressing the bar, on account of the preferred form given the teeth;

It is desirable that the chamber (1, the bar k, the pin Z and the slots m be given suitable relative sizes so that the bar may be turned transversely within the chamberto free the pin from its engaging slots in order that the ar may beeasily placed in position or removed when desired. The bar is extended beyond the chamber at its rear end to form another handle 9 to aid in turning it as above described, and also forholding the bar down atthat end if so desired, when releasing the adjustable jaw. When the bar is pressed down at its forward end, it rises at its rear end until the pin It strikes the ends of the slots m. It is therefore obvious that if the end the barwill not have to be forced down as far as when only the end 12 is depressed. The chamber (1 is however -made deep 9 is depressed with the end 7/,

enough to provide for either operation' This improved construction of the locking bar enables the teeththereon and the teeth of the movable jaw to be normally in uni- 1 form engagement, that is to' say, it distributes the force, applied at the handle in operating the wrench, among all the teeth on the jaw, instead of only upon a few as in the case where the bar is pivoted in the manner shown in the patent above referred to.

The proper locking of the bar and jaw will also continue regardless of the wear of the parts. Such a construction also provides for an easy removal and replacement of the look ing bar from the wrench, no tool being necessary to accomplish this.

Having thus described my invention, I claim:

A wrench comprising a hand lever having a head at one end; a jaw at one end of the head; a chamber through the head, a rack bar within the chamber, a pin extending throughthe bar and having its ends disposed in slots formed in the head, a spring for holding the bar in raised position at both ends, an operating handle formed by projecting the forward end of the bar without the chamber, a movable jaw having a rack for engagement with the rack of the bar when in normal position to lock said jaw against outward displacement from the fixed jaw, and means for securing the jaw in slidlng relation in the head.

This specification signed and witnessed this 17th day of June A. D., 1912.

WILLIAM IRING.

M. P. WINNE.

Images