Cuckoo Clock - Wall clock driven by weights
Cuckoo Clock of the factory "Mayak" was made in the 70-ies of the XX century. The striking clock mechanism is with the weight engine and "cuckoo" in a wooden case. The mechanism work of this cuckoo clock is implemented this way. The weights are suspended by the hooks on the chain, which are put on the cross. The cross, two side washers, a three-blade spring and a pawl do not allow the chain to jump off the sprocket. The whole assembly is called a pulley and it rotates on the drive wheel axle.