Cassette for band material

Details Cassette for band material Cassette for band material

1981-02-10

1982-09-28

McCarthy, Edward J.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

242 712, 352156, G03B 104

Patent

active

043514979

ABSTRACT:
A motion-picture film cassette has a pay-out spool and a take-up spool mounted coaxially, but at opposite sides of a divider wall. Film travels in one direction through the wall from the pay-out spool to the take-up spool. An anti-reversing device is provided to prevent reverse movement of the film and/or spools; it includes an annulus of holes in the wall, surrounding the axis of the spools, and a resiliently yieldable finger projecting from that surface of the take-up spool which faces the wall. The finger ratchets over the holes when the take-up spool turns in take-up direction but engages in a respective one of the holes to block reverse movement when the take-up spool attempts to turn in the opposite direction.

REFERENCES:
patent: 3455519 (1969-07-01), Gersch
patent: 3599894 (1971-08-01), Edwards
patent: 3622101 (1971-11-01), Sutliff
patent: 3623679 (1971-11-01), Neudecker
patent: 3726491 (1973-04-01), Tucker

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