Tensioning control for flexible cable

A cable control assembly for selectively tensioning and locking a flexible cable in a predetermined tensioned condition or in a predetermined cable relaxed condition, said control assembly comprising a control bracket, said control bracket comprising inner and outer sidewalls, an actuating lever pivotally mounted on said bracket between said bracket sidewalls, a spring linkage disposed between said bracket sidewalls and pivotally mounted at one end to said bracket and at the other end to said actuating lever, an arcuate cam surface on said actuating lever disposed around the actuating lever pivot, means for connecting a cable end to said actuating lever with a portion of said cable adjacent said cable end riding on said cam surface, the center of said cam surface being displaced from the actuating lever pivot to provide a shortening radius from the actuating lever pivot to the point of engagement of said cable with said cam surface as the actuating lever approaches the cable tensioned position, stop means on said bracket for limiting the pivotal movement of said actuating lever between a cable relaxed position and a cable tensioned position, the point of pivotal connection of said spring linkage to said actuating lever passing across the center line extending through said actuating lever pivot and the point of pivotal connection of said spring linkage to said bracket when said actuating lever is moved between the cable relaxed and the cable tensioned position whereby said spring linkage effects locking of said actuating lever in either the cable tensioned or cable relaxed position.