Tobacco – Cigar or cigarette making – Molding or forming
Patent
1980-09-29
1982-09-21
Millin, V.
Tobacco
Cigar or cigarette making
Molding or forming
131906, 131908, 131910, 356237, 250227, A24C 514, A24C 534
Patent
active
043501702
ABSTRACT:
An apparatus for monitoring the exterior of a cigarette rod which moves lengthwise through an annular housing has a ring-shaped light-conducting prism which is mounted in the housing and is surrounded by an annulus of discrete light sources to direct testing light toward the exterior of a rod which moves therethrough. The prism directs light at an acute angle to the axis of the moving rod, and the light which is reflected by the exterior of the moving rod passes through an annulus of light conducting fibers each of which directs reflected light against a discrete photoelectronic transducer. The transducers form part of a circuit which evaluates the intensity of reflected light to thereby detect defects which cause an intensification or a weakening of reflected light. The prism has a triangular cross sectional outline with an apex of the outline adjacent to the path of the rod and a side which is located opposite the apex and extends at right angles to the direction of incident light. Such light issues at the apex and impinges upon the exterior of the moving rod. The latter is guided by an odd number of narrow webs which are installed at the rod-admitting end of the housing and are adjustable radially of the housing to engage rods of smaller or larger diameter.
REFERENCES:
patent: 2806401 (1957-09-01), Demuth et al.
patent: 3068742 (1962-12-01), Hicks, Jr. et al.
patent: 3695771 (1972-10-01), Bardos
patent: 3746575 (1973-07-01), Arnaudin et al.
patent: 3812349 (1974-05-01), Gugliotta et al.
patent: 3818223 (1974-06-01), Gibson et al.
Hauni-Werke Korber & Co. K.G.
Millin V.
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