Abstract: An improved electrolytic cell, the electrodes of which can be readily cleaned, and resensitized by the application of fresh electrolyte upon the electrodes. The cell includes a cleaning assembly integral with the cell body, and the electrodes of the cell are integrated with a plunger reciprocably mounted within the cell body. In operating position, the electrodes are extended by actuation of the plunger into a thimble insert which, with the components provided by the thimble insert provide the essential components of an operative cell. The plunger, when the cell has become insensitive due to desensitization of the electrolyte, can be withdrawn from the thimble insert, aligned with the cleaning apparatus, the electrodes cleaned and a fresh electrolyte installed upon the electrodes, and the electrodes returned to operative position by mere reactuation of the plunger.

Abstract: A weight carrier rests on a floating ceramic ball supported within a nozzle by flow-regulated air. The air flows in an inlet path within the nozzle to support the ball and then exits through an outlet path downstream of the ball. A pressure regulator maintain a selected pressure in correspondence with a given weight on the ball. Dampening is provided in the nozzle itself rather than in a canister external thereto. Helical input and output paths wind around the axis of the nozzle to and from the ball. The cross section of the exit path increases with distance from the ball. The path may comprise an thread of increasing depth in an adjustment screw received in a cylindrical bore along the axis of the nozzle.