Kamera mit einem Antriebsmotor und einer Vorrichtung zur wahlweisen Steuerung von Sonderfunktionen

摘要

A programming device for the fading means in a motion picture camera can be indexed by the camera motor through the intermediary of an auxiliary drive which can be activated and deactivated at the will of the user. The auxiliary drive receives motion from a worm shaft which is constantly driven by the camera motor, and the auxiliary drive has a single worm gear or a cluster of coaxial worm gears movable into and out of mesh with the worm shaft in response to rotation of a knob, and a power train which indexes the programming device when the motor is on and the worm shaft meshes with the single worm gear or with a selected worm gear of the cluster. The programming device is a ratchet wheel and the power train has a pawl which is biased against the teeth of the ratchet wheel and a crankshaft which rocks a lever serving to transmit motion to the pawl.