TB Wood’s easily installed Roto-Cam® mechanical clutch completely eliminates external, separately mounted fulcrums, yokes, levers or trunnions and permits a simple, clean compact control system for direct or remote -- manual or powered -- actuation. Roto-Cam provides smooth easy engagement typical of a spring loaded clutch plus a positive, over-center "lock-in". The clutch can be "inched" or "Jogged" for complete operator control.