| 摘要 |
<p>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 function, control means controlled by said output shaft being present to activate or diable 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.</p> |
