Hauni-werke Korber & Co Kg.

Rolf Schmidt

Uwe Leckband

Herbert Berlin

The discharge end of a supply conduit for a mixture of tobacco particles and air communicates with the top portion of a hollow cylindrical housing for a driven cell wheel whose cells are subdivided into inner and outer chambers by impermeable partitions. The outer chamber of each preceding cell communicates with the inner chamber of the respective next-following cell by way of a sieve which forms part of the corresponding vane of the cell wheel. The outlet for tobacco particles is disposed at the lowermost point of the housing and communicates with successive outer chambers, the same as the discharge end of the supply conduit. A suction pipe for evacuation of gaseous carrier medium has an intake end which is coaxial with the wheel and communicates with successive inner chambers at a level above the axis of the wheel so that the inner chambers of cells whose outer chambers discharge tobacco particles into the outlet are sealed from the suction pipe. The discharge end of the supply conduit has a wall portion which deflects particles of tobacco onto successive partitions of the wheel. A pipe for admission of compressed air which cleans the sieves communicates with successive inner chambers in the region of the outlet for tobacco particles.

Apparatus for separating particles of tobacco or the like from a gaseous

A filter cigarette making machine wherein two plain cigarettes of unit length are connected to a coaxial filter plug of double unit length therebetween by an adhesive-coated uniting band which is convoluted around the filter plug and the inner ends of the plain cigarettes. The machine has a rotary drum-shaped draping conveyor and a heated stationary block-shaped rolling device adjacent to the peripheral surface of the conveyor to normally define therewith a gap of a width slightly less than the diameter of a group consisting of two coaxial plain cigarettes and a filter plug therebetween. Successive groups, each of which carries a non-convoluted uniting band, are fed into the gap by moving sideways whereby the groups roll about their own axes and the uniting bands are converted into tubular envelopes. A parallel motion automatically retracts the rolling device from the draping conveyor when the prime mover of the machine is arrested whereby the groups between the conveyor and the rolling device are free to leave the machine by gravity. This insures that filter plugs which are sensitive to heat cannot adhere to or contaminate the peripheral surface of the draping conveyor and/or the adjacent surface of the rolling device. The parallel motion is actuated by a double-acting pneumatic cylinder and piston unit which receives pressurized fluid by way of a valve whose solenoid is controlled by a tachometer generator which monitors the speed of the draping conveyor.

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Glinde, Germany

Rolf Schmidt