Device for driving a conveyor according a pattern of unequal separate steps

摘要

A device for activating the one or the other of two movement transfer devices, both driving the same output shaft, at least one of said movement transfer devices having a cam disc to create a desired velocity characteristic, control means controlled by said output shaft being present to activate or disable the connection between a command member and means for controlling clutches in said movement transfer devices and a step regulating means connected to said output shaft.