Abstract: A chlorinator for electrolytically producing chlorine from brine comprises an electrolytic cell having a vertical cation permeable diaphragm separating the anode and cathode compartments, a source of brine feeding concentrated brine into the anode compartment at regular intervals, and a mixing device in which chlorine gas produced by the electrolytic cell is mixed with a stream of water to be chlorinated. The electrolytic cell is provided with means for intermittently transferring small amounts of the anolyte from the anode compartment to the cathode compartment and for preventing the catholyte from coming into the anode compartment.

Abstract: A device for holding tube-shaped objects which objects are placed on or off a casing having a fixed portion, a slideable portion, and expandible members connecting said casing fixed and slideable portions, a piston inside said casing connected to said slideable portion and valves for controlling the supply of a pressure medium to said piston through the movement of the object on said casing so that said object can be held on said casing or readily removed therefrom by a longitudinal movement of said object.