Device for making grooves in cigarette filters

Manufacturing container or tube from paper; or other manufacturi – Cigarette filter making – With shaping or compacting of filter material

Patent

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Details

425385, 425392, 425402, 279 1E, 82 11, 131 94, B29C 4308, A24C 302, A24C 304

Patent

active

048834491

ABSTRACT:
An apparatus for sequentially forming a plurality of generally longitudinally extending grooves in the peripheral surface of a filter rod includes a hollow rotatable drum having a plurality of filter rod receiving channels formed in its outer peripheral surface for receiving filter rods to be grooved. The device includes filter rod indexing devices which engage the filter rods in the receiving channels. As the drum rotates about its central axis, the filter rod indexing devices are individually and selectively activated to incrementally rotate selected filter rods about their longitudinal axes through an angle corresponding to the angular spacing between adjacent grooves to be formed in the peripheral surface of the filter rod. Cam operated grooving fingers located around the circumference of the drum are selectively actuated to sequentially form grooves in the filter rods after the filter rods have been rotated about their longitudinal axes from the position of the previously formed groove by the filter rod indexing device.

REFERENCES:
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patent: 3348852 (1967-10-01), Wilson
patent: 3804695 (1974-04-01), Randall et al.
patent: 3845963 (1974-11-01), Price
patent: 4075936 (1978-02-01), Berger
patent: 4149546 (1979-04-01), Luke et al.
patent: 4292032 (1981-09-01), Luke
patent: 4324540 (1982-04-01), Sextone et al.
patent: 4436517 (1984-03-01), Lebet
patent: 4492238 (1985-01-01), Wheless
patent: 4517046 (1985-05-01), Heaney et al.

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