Device with contrarotating knives for severing filter cigarette

Details Device with contrarotating knives for severing filter cigarette Device with contrarotating knives for severing filter cigarette

1983-06-22

1990-07-24

Woo, Jay H.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

83323, 83341, 156521, 156556, 156567, B32B 3100

Patent

active

049433415

ABSTRACT:
A device with contratrotating knives for severing filter cigarette uniting bands from webs for filter cigarette assemblies in automatic filter tipping mahines, in which the knives are carried by drums in arrays with their cutting edges meeting with tangential contact at successive points. The cutting edges of one series of knives are carried at a higher peripheral speed than that of the other series by a support drum. The path of the cutting edges with a higher peripheral speed develops in a plane of the tangential point between the knives of both series such that their lowermost and uppermost sections respectively, are distant from the axis of rotation by equal radii, but greater than that of at least one of their intermediate points coincident with the tangential point.

REFERENCES:
patent: 1867884 (1932-07-01), Huff
patent: 2246957 (1941-06-01), Shields
patent: 2399529 (1946-04-01), Willits
patent: 2829691 (1958-04-01), Jarvis
patent: 3230809 (1966-01-01), Liick
patent: 3247746 (1966-04-01), Nystrand
patent: 3380328 (1968-04-01), Martin

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