Chamber filter press

Claim 1

In a chamber filter press having a plurality of movable linked filter plates suspended for movement along horizontal guides, each said filter plate carrying a cam, means for separating a plurality of said filter plates with the opening of said filter press, with an endless filter plate transporting assembly, driven by a reversible motor and carrying dogging members which move over said cams on abutted filter plates in both directions with the exception of the cam on a foremost filter plate while the press is being opened, said dogging members engaging said cams of said filter plates separated by said linkage and having a switch means which reverses the direction of rotation of the motor from forward to reverse motion when the filter plate which has just been moved rests against the previously moved filter plate, connection means operatively connecting said switch means to a time control means which is energized in response to switching over to said reverse motion and at the end of a preset time said time control means switches said reversible motor again from reverse to forward motion.