Manufacture of cigarettes

Details Manufacture of cigarettes Manufacture of cigarettes

1977-04-20

1986-04-29

Woodiel, Donald O.

Measuring and testing

With fluid pressure

Leakage

73 38, G01M 326

Patent

active

045848700

ABSTRACT:
Apparatus for testing the wrappers of cigarettes for leaks includes means for producing a series of first electrical signals indicative of the leakage flow through the wrappers of successive cigarettes, a comparator device for producing an ejection signal to eject each faulty cigarette, and an averaging device which responds to the running average level of the first signals and continuously varies the limit of the first signal which results in the production of an ejection signal by the comparator device, whereby that limit is raised when the running average of the first signals increases, and is lowered when the running average of the first signals falls.

REFERENCES:
patent: 3464549 (1969-09-01), Armbruster
patent: 3696294 (1972-10-01), Krupka
patent: 3892951 (1975-07-01), Stutz

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