Adjustable Clamp Company

Charles Martinka

Robert D Wooster, Jr

Robert D Wooster

An adjustable pliers having first and second elongated members, each elongated member comprising a handle, a jaw, and a intermediate portion between the jaw and the handle. The intermediate portion of one of the elongated members includes an elongated slot, while the intermediate portion of the other elongated member includes a pivot pin that is slidingly captured in the elongated slot. A spring is captured in the elongated slot and engages the pivot pin so as to bias the jaw of one of the elongated members toward the jaw of the other elongated member. One of the handle members also includes a stop pin in its intermediate portion that abuts the intermediate portion of the other elongated member to limit the degree to which the elongated members can pivot with respect to each other about the pivot pin.

Adjustable pliers

A locking pliers wrench adjustable to grip between two jaws and lock onto objects in a range of sizes. An elongated handle forms the body of the wrench. The rear portion of the handle is channel-shaped in cross section and houses a gripping size adjusting screw and a jaw actuating slider actuated thereby. One jaw is rigidly mounted on the fore end of the handle while the second jaw is pivotally mounted on the handle at a first point adjacent the rear end of the first jaw. A second handle extends generally parallel to the body forming first handle and is pivotally connected to the second jaw at a second pivot point spaced from the first pivot point. A link connects the second handle with the fore end of the jaw actuating slider. The adjusting screw is free to rotate but is restrained from axial movement. A nut is locked in the rear end of the slider so as to receive the threaded shank of the screw. The rear portion of the screw rotatably engages the rear end of the body forming handle. Rotation of the screw shifts the slider in opposite directions in the body forming handle and in turn adjusts the size of the gripping opening between the two jaws.

Growing community of inventors

Berwyn, IL, United States of America

Charles Martinka