Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.

Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.

Abstract: The invention relates to an agent for treating the skin of domestic animals, consisting of a mixture of the following composition, expressed in per cent by volume:15-30%: soft soap4-10%: peanut oil4-10%: spirit of camphor1-5%: spirit of vinegar30-50%: lower aliphatic alcohol20-40%: water.The invention also relates to a method for preparing such an agent by successively mixing the included components with each other at room temperature and in the order indicated above.The invention further relates to the use of such an agent for skin-softening purposes. The agent is then applied to the udder and teats of cows.

Abstract: A chip-firing unit in which a chip container has a discharge attached to the container bottom to supply chips from the container to the inlet of a motor-operated fan attached to the container. The fan is connected to a chip burner and supplies the burner with chips and air drawn in by the fan. The discharge on the container is a pipe with an external thread and is rotated by the same motor which drives the fan. The other end of the discharge pipe provides an intake for the air to be mixed with chips by the discharge. The pipe, furthermore, has an interior enclosing a rod which carries a control unit for chips and air supplies to the fan. This rod is adjusted automatically by a regulator of the hot-water boiler type. Chips are continuously fed to the inlet of the fan during rotation of the pipe. One throttle is provided for controlling the air through the inlet to the pipe, and a second throttle and a regulating rod controls the chip supplied to the burner.

Abstract: A mill for crushing tree trunks is disclosed which includes a rotor having a series of crushing blades disposed helically around the rotor. The rotor blades pass between axially spaced stator blades in the mill housing to crush the trunks and liberated associated foreign matter. The crushed material and liberated foreign matter is moved toward one end of the mill housing by the action of the helically disposed rotor blades where it is discharged from the mill.