Model of an Artillery Crane on Tracks

Model of a heavy crane on eight wheels, a sledge, and a loading platform, which run on tracks, and a cart. The tackle has two winches, with cranks on both sides; by turning the drums with gears, the winches can be combined, but the mechanism is now defective. The crane arm rotates on its axis; the rope runs over a pulley through the kingpin to the back, between two vertical rollers and over a pulley back to the front and over a pulley at the end of the arm. A ring and double hook are attached at the end. There are three track pieces, one of which is a turntable with a ball bearing. One sledge is a frame with eight wheels like the crane; the other is a loading platform with tracks, which must be placed upside down on the other track pieces with balls in the tracks, which function as ball bearings. The track pieces and the loading platform have rings on the sides for dragging and securing with ropes.