Importance

Loading Importance Indicators...

Abstract

This invention pertains to a box joint for use with plier-type tools and the like. These tools are pivotally retained with two members having handles and jaws. The box joint provided has a first member with a midportion of conventional construction and with an aperture through which the shank of a shoulder screw is passed. A second member has its outer wall portions formed with one wall integral with and extending from the handle to the jaw portion and the other outer wall having a transverse opening therethrough with each end of this opening made as a shouldered or stepped end. The opening and the stepped end configuration has the narrower opening at the inner portion and through this narrower opening the midportion of the first member passes when and while normal to its closed or in-use condition. The inturned shoulders adjacent the stepped opening of the second member are adapted to engage and retain the midportion of the first member when the first and second members are moved to the closed and operating condition. A retaining plate is sized to be snugly seated in the stepped opening and has a through aperture in which the shank of the retaining cap screw is passed. A threaded end of the cap screw is mounted in a threaded aperture in the integral outer wall of the second member. The jaws of the first and second members can and are hardened or provided with inserts and all surfaces of the box joint plate and jaws are precisely finished without distortion as would occur from the conventional use of heat or applied pressure.

Loading the Abstract Image...

First Claim