Abstract: A method for controlling operation of a winch, which has a capstan drive unit for hauling a cable into the winch and for paying the cable out of the winch, a main drive for driving the capstan drive unit, a cable drum for receiving the cable by winding up and unwinding the cable, a drum drive for driving the cable drum, wherein the drum drive and the main drive are operable independently of one another, and a rotational speed measuring device which is arranged in a cable inlet portion of the winch. The method has a step of reading a first rotational speed from the main drive and a second rotational speed from the rotational speed measuring device. In addition, the method has a step of determining a torque value for setting a torque of the drum drive depending on the first rotational speed and the second rotational speed.

Abstract: Mounted support arms affixed to a fifth wheel pinbox and formed to receive booms provide a sturdy framework for a winch mounting plate. The winch actuates a hitch-hoisting cable which may be attached to a truck hitch to lift it from the bed of a truck and then lower it to a storage location. The hitch hoist may have two mounting arms, two booms, and a winch on a plate with width variability built into the bolting slot patterns. The booms extend from the mounting arms near the winch plate to form an obtuse angle between the booms and the arms. From the horizon, the angle may be viewed to be that of approximately forty-five degrees (45°). An axle is affixed near the end of the booms and holds a cable wheel which guides a cable and hook to raise and lower the hitch with the winch.

Abstract: A power shovel including a tool for lifting, a machine house, a hoist drum, hoist drum machinery and an auxiliary weight box having a perimeter, the hoist drum and hoist drum machinery being at least partially disposed within the perimeter of the auxiliary weight box and the hoist drum being disposed outside of the machine house.

Abstract: Mounted support arms affixed to a fifth wheel pinbox and formed to receive booms provide a sturdy framework for a winch mounting plate. The winch actuates a hitch-hoisting cable which may be attached to a truck hitch to lift it from the bed of a truck and then lower it to a storage location. The hitch hoist may have two mounting arms, two booms, and a winch on a plate with width variability built into the bolting slot patterns. The booms extend from the mounting arms near the winch plate to form an obtuse angle between the booms and the arms. From the horizon, the angle may be viewed to be that of approximately forty-five degrees (45°). An axle is affixed near the end of the booms and holds a cable wheel which guides a cable and hook to raise and lower the hitch with the winch.

Abstract: The vehicle crane comprises a truck carrier and a superstructure in which the driving of the superstructure function is carried out by means of hydraulic pumps in the truck carrier, and the hydraulic pumps are driven by a distributor gear unit which is arranged in the truck carrier and to which the output shaft of the vehicle drive is connected.

Abstract: A vacuum actuated power take off assembly for a winch which is preferably mounted on a vehicle and part of a tow truck structure of the type commonly known. A power shaft is connected in cooperative relation to the transmission vehicle and an activating means is operated through manipulation of a fluid operable switch which directs the negative pressure from the internal combustion engine to a fluid power drive structure which serves to dispose a connecting gear between the drive shaft and a power take off of the transmission into and out of operative position relative to drivingly attaching the drive shaft to the transmission for operation of the winch.