Abstract: The jacket material of welding rods is removed and processed for reuse, and the rods are cleaned and processed for reuse by delivering the jacketed rods to a ball mill, grinding the jackets from the rods within the ball mill by oscillating the jacketed rods in the environment of equally long cylindrical grinding bodies while holding the rods and the grinding bodies against axial movement and in generally parallel disposition with respect to one another. The detached jacket material is conveyed continuously from the grinding chamber and further comminuted, the transport of the ground material being supported by flowing a fluid through the grinding chamber. The fluid may be a gas or a liquid and may contain a chemical reacting agent for an after treatment. The fluid may advantageously be circulated, freed from the solid material transported thereby, regenerated and/or heated. Both neutral and chemically reacting fluids may be alternately employed, depending on the particular materials involved.

Abstract: A grid cooler for cooling hot material such as cement clinker issuing from a rotating cement kiln including a generally horizontal movable cooling grid with stationary elements and horizontally and vertically movable elements, housing enclosing the grid with an inlet chamber extending over the kiln, sidewalls on the housing and vertically adjustable brackets on the sidewalls with cross shafts and vertical support pedestals on the cross shafts with the pedestal for the movable grid including an inclined cam arrangement, and a drive for the movable grid with pivotal support arms supporting the discharge end of the grid about an axis substantially coincident with the plane of the grid so that the angle of inclination of the grid may be adjusted by swinging the receiving end of the grid up and down and the grid pivoting about its discharge end.

Abstract: A centrifuge for the dewatering of a fine grained material having a downwardly flaring frusto conically shaped porous sieve cage rotatable about its axis and axially oscillatible with a preacceleration frusto conically shaped cone within the sieve cage with its larger end upwardly and a central material delivery means for supplying material to the cone and an annular spoked mounting means extending between the base of the cone and sieve cage with a drive connecting to the mounting means and an elastic connection between the rotatable drive and sieve cage and an elastic connection between the oscillatible drive and sieve cage and an annular downwardly extending solid collection housing mounted at the lower end of the sieve cage and an annular housing surrounding the sieve cage for the collection of water with the oscillatible drive and rotatable drive mounted at the base of the unit coaxial with each other.

Abstract: The jackets of rod-shaped supports, particularly jackets of welding electrodes, are removed by placing the jacketed support rods in a ball mill and grinding the jacketed rods to break up the jackets with steel rods constituting grinding members. This grinding operation takes place in a chamber having a perforate wall portion by which the broken jacket material passes and is transported, via a tube, to a fine grinder. Advantageously, the length of the container constituting the grinding chamber exceeds the length of the jacketed rods by only about 10% so that only a small axial shifting of the rods is possible and a transverse disposal of the rods is prevented. It is also expedient to fill the container to about 40% of its volume with the steel rod grinding members and to provide rapid closures for the containers for rapid charging of the jacketed rods and discharging of the dejacketed rods.

Abstract: Grinding mill including at least one container partially filled with grinding media, and at least one excitation member extending in direction of the longitudinal axis of the container and disposed within the container so as to be surrounded by the grinding media received in the container; the excitation member being supported on the wall of the container by a plurality of individual rod-shaped support elements extending substantially radially from the excitation member and disposed in spaced relationship to one another in direction of the longitudinal axis.

Abstract: A rotary tubular furnace is provided at its outlet end with a satellite cooler comprising a plurality of cooling tubes uniformly spaced around the end portion of said tubular furnace and/or a tubular extension thereof, and each of said cooling tubes is provided with an influent member which during the rotation of the furnace intermittently dips into a cooling liquid bath to thereby supply cooling liquid to the respective cooling tube in regulatable quantities, said cooling liquid bath being connected with a supply of cooling liquid by a stationary supply conduit.

Abstract: A cylinder for reciprocable internal combustion engines with a top section fixedly connected to the cylinder into which a cylinder bushing is inserted in dry condition. One end of the cylinder bushing extends with slight radial play into an annular flat groove provided in the top section of the cylinder and having its inner circumferential surface form an angle in excess of 70.degree. with that portion of the top section which faces toward the interior of the cylinder.