Hermann Berstorff Maschinenbau Gmbh

Horst Muller-Erwig

Wilhelm Brand

An apparatus is provided for the continuous coating of cylindrical workpieces with a mixture of rubber or thermoplastic plastics material. The arrangement includes an extrusion device, a coating head and a flow channel, which connects the extrusion device to the coating head. The coating head includes a hollow barrel, having a rotatable sleeve-shaped material distributor coaxially disposed therein. One or more conveyor flights are helically disposed on the periphery of the distributor. The discharge opening of the flow channel into the coating head end has a dimension corresponding to an axial pitch length of the flights on the periphery of the distributor.

Apparatus for the continuous coating of cylindrical workpieces with a

A method and apparatus for producing open-sided V-belts by cutting from a vulcanized, sleeve-shaped roll. The sleeve-shaped roll is disposed over two drivable rollers. A tensioning arrangement which includes one of the rollers has a weight. This weight acts solely on such roller tending to pull this roller away from the other roller. This tensions the roll. When the tensioning force attains a predetermined limit, it is partially counteracted by a force acting in the opposite direction. The counter-acting force is supplied by suitable means. Cutter means are provided for cutting the roll while it is tensioned and the counteracting force is increased by suitable means in dependence upon the number of belts cut from the roll.

Method and apparatus for producing V-belts

An apparatus for producing open-sided V-belts by cutting from a vulcanized, sleeve-shaped roll while the roll is being tensioned by being passed over two drivable rollers. By unilaterally pivoting one of the rollers and by providing a stop member which abuts the roll, the roll is tensioned by the desired amount and runs smoothly around the rollers so that an accurate cutting operation can be achieved by cutters.

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Neustadt, Germany

Horst Muller-Erwig