She-bolt type gripper device for concrete wall form tie rods of

Abstract

A releasable, reusable, slip-on, she-bolt type gripper device designed for telescopic reception therein or therethrough of one of the projecting end regions of a cylindrical horizontally extending tie rod as used in connection with a concrete wall form or the like and adapted to receive the reaction pull of the tie rod incident to the pouring of wet concrete between the wall form sides. The device embodies a series of circumferentially arranged chuck-forming jaws which normally grip the adjacent tie rod end region but which become released therefrom when a hollow pull rod through which said tie rod end region extends is actuated. Because the pull rod is hollow and the adjacent end region of the tie rod may project completely through such pull rod, as well as through the entire gripper device, the tie rod with which the device is associated need not be cut to length and any excess protruding portion of such tie rod as may project from the finished concrete wall after the gripper device has been removed from the adjacent projecting end region of the tie rod and after the concrete wall form has been dismantled or taken down, may be wrested or otherwise removed from the wall.