Remote control crane system

Claim 1

A REMOTE CONTROL CRANE SYSTEM FOR OPERATION IN AN ENCLOSED AREA COMPRISING: (A) A PAIR OF PARALLEL SPACED APART TRACKS EXTENDING THROUGH SAID AREA; (B) A BRIDGE SPANNING SAID TRACKS; (C) REMOTELY CONTROLLED DRIVE MEANS FOR MOVING SAID BRIDGE ALONG SAID TRACKS; (D) A CARRIAGE SUPPORTED ON SAID BRIDGE; (E) REMOTELY CONTROLLED DRIVE MEANS FOR MOVING SAID CARRIAGE ALONG SAID BRIDGE; (F) HOIST MEANS SUSPENDED FROM SAID CARRIAGE; AND (G) REMOTELY CONTROLLED DRIVE MEANS FOR RAISING SAID HOIST MEANS; (H) SAID DRIVE MEANS FOR SAID CARRIAGE COMPRISING: (1) A ROTATABLE ACTUATOR JOURNALLED ADJACENT THE FORWARD WALL OF SAID ENCLOSED AREA, (2) A FREE TURNING CAPSTAN ON SAID CARRIAGE; (3) A PAIR OF IDLER SHEAVES JOURNALLED ADJACENT SAID FORWARD WALL IN ASSOCIATION WITH SAID ACTUATOR, A DOUBLE GROOVED IDLER SHEAVE JOURNALLED AT ONE END OF SAID BRIDGE, A PAIR OF SINGLE IDLER SHEAVES JOURNALLED AT THE OTHER END OF SAID BRIDGE AND AN IDLER SHEAVE AT EACH FORWARD AND REAR CORNER OF SAID ENCLOSED AREA, AND (4) A TAUT FLEXIBLE CABLE EXTENDING IN A LOOP FROM SAID ACTUATOR AROUND ONE OF SAID FORWARD WALL IDLERS TO AND AROUND SAID DOUBLE GROOVED BRIDGE IDLER IN ONE DIRECTION, IN ONE TURN ABOUT SAID CAPSTAN IN ONE DIRECTION, AROUND ONE OF SAID PAIR OF SINGLE BRIDGE IDLERS OF ONE OF SAID REAR CORNER IDLERS, TO THE OTHER OF SAID REAR CORNER IDLERS, AROUND SAID DOUBLE GROOVED BRIDGE IDLER IN THE OPPOSITE DIRECTION, IN ONE TURN ABOUT SAID CAPSTAN IN THE OPPOSITE DIRECTION, AROUND THE OTHER OF SAID PAIR OF SINGLE BRIDGE IDLERS TO ONE OF SAID FORWARD CORNER IDLERS, AND OVER THE OTHER OF SAID FORWARD WALL IDLERS TO THE ACTUATOR.