92 with a cylindrical body 94 and an enlarged head 96 a return spring 98 is constrained between an inner surface of cylindrical body 94 and the head of a bolt 100 which is threaded into shaft 18 head 96 is pressed against actuator plug 22 by spring 98 a sleeve 102 is fitted over cylindrical body 94 and held against relative movement by a retaining ring 104 a cocking spring 106 is constrained between cylindrical body 94 and sleeve 102 a bushing 108 which is fitted about sleeve 102 is captively held in place between a shoulder 110 on sleeve 102 and a lock ring 112 a lock out ring 114 having an enlarged head 116 is mounted about bushing 108 cocking spring 106 presses head 116 of lock out ring 114 against fingers 70 and 84 when plunger 22 is depressed as best shown in fig1 the side of enlarged head 116 and the innermost side of fingers 70 and 84 are tapered inwardly towards one another to permit lock out ring 114 to move into engagement with the fingers in order to fully disengage rollers 66 80 and dowels 20 when the edges of the fingers have been moved out beyond the edge of the enlarged head in the illustrated embodiment by way of example torque limiter 10 is composed of steel and is approximately twelve inches long with a one and one.