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WORM-GEAR MECHANISM FOR INTERMITTENT DRIVEN SHAFT ROTATION

When driving spline shaft 8 rotates continuously about fixed axis C, worm 1, which can slide along the splines of shaft 8 and meshes with worm wheel 2, rotates the wheel counterclockwise. Worm wheel 2 is keyed to shaft 9 with which it rotates about fixed axis B. When pin a of wheel 2 runs up against one end of bell-crank lever 3, wheel 2 and shaft 9 stop rotating and worm 1, continuing to mesh wit…