Abstract: A device for controlling and positioning a carriage in a tool machine, in particular the feed carriage on a gear hobbing machine. The device utilizes cams oriented one after the other and which operate a plurality of switches to control the advance of the carriage. The end position of the carriage which is controlled by a control switch is determined by two cam carriages. The first cam carriage is positionable with a rough or coarse adjustment relative to the machine frame and the second cam carriage is finely adjustable relative to the first cam carriage. The cam carriages carry the aforementioned cams to effect a control of the movement of the feed carriage path adjacent the workpiece.

Abstract: Electrical sequence control system. There is described an electrical sequence control system which is controlled according to a predetermined program by means of a switching circuit wherein the outputs of the binary counter are connected with n bits to the data inputs of the decoder and the address inputs of a multiplexer, the output of the latter being applied to one input of an AND-gate and the second input of said AND-gate being connected to a rectangular wave generator. The output of the AND-gate is connected to the input of the binary counter and the connection of the output of the multiplexer with the input of the binary counter acts as a return when one of the input signals at the multiplexer corresponds with the address input.