Abstract: A switching mechanism with a vacuum circuit breaker between a bus bar and a cable connection stud. With this switching mechanism, the conductor parts forming the current path are coaxially arranged in an insulating oil bed surrounded by a tightly sealing outer sleeve of electrically conducting material and an inner sleeve of electrically insulating material. That end of the immovable contact of the vacuum circuit breaker which projects from the vacuum container is fastened to the inner conductor of the bus bar or collecting bar and extends transversely therefrom. The movable outer contact of the vacuum circuit breaker connected to the inner conductor of the cable connection stud is actuable axially via an insulating body.

Abstract: An apparatus for actuating electrical load-separating switches in an electricity supply network, and including at least one manual actuation lever. An electrical actuating motor is provided which is capable of being supplied with operating current from an auto battery, and is located at the load-separating switch in addition to the manual actuation levers. A remote control cable, which extends from the electrical actuating motor, is equipped with a plug connector having a plug which can be taken along in the maintenance-service vehicle belonging with the auto battery. The load-separating switches are selectively capable of being actuated over the remote operating cable from a switching and indicating panel carried along in a maintenance-service vehicle. A follower for the manual actuation lever of the load-separating switch is connectible to a closed-loop drive chain, and when coupled thereto is movable between abutments.

Abstract: An electrical control device for high and low voltage installations with at least one switch including a stationary contact fastened to a connecting part of an insulated feed or supply line and also comprising a movable counter contact operable by way of an insulating body and connected to the flexible inner conductor of a likewise insulated cable connecting member. The connecting part of the insulated supply line, the above mentioned switch, the cable connecting member, and the insulating body are encased by a tightly sealing common cover or envelope including a bellows having at least one annular fold and being operable to absorb the control movements of the insulating body. The aforementioned cover or envelope has an electrically insulating inner layer and an electrically conductive outer layer for the ground potential.

Abstract: A process for the treatment of aqueous solutions containing cations and anions, including aluminum sulphate and fluoride ions, for the recovery of the fluorine contained in the aqueous solution by means of an ion exchange plant, in which the aqueous solution flows through at least a strong acid cation-exchanger filter step, then a first weak basic anion-exchanger filter step which produces an almost complete separation of the sulphate ions, and after that a second weak basic anion-exchanger filter step which separates out the fluorine ions, and the fluoride is recovered from an eluate obtained during regeneration of the second anion-exchanger filter step.