Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1976-09-20
1978-01-17
Stephan, Steven L.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
242 711, 352 78R, 353120, G03B 104, G11B 1532, G03B 2302
Patent
active
040688097
ABSTRACT:
A film strip cartridge having a film guide channel thru which film may be advanced has a film lock means disposed in the channel to selectively arrest the advancement of the film. The film lock is formed from a resilient wire which has a first end secured to a portion of the cartridge. A nub is formed in the wire intermediate to the first end and the distal end of the wire. The resilient wire urges the nub into one of the perforations formed along the margin of the film to arrest the longitudinal movement of the film and thereby prevent inadvertent film removal.
REFERENCES:
patent: 1824709 (1931-09-01), Debrie
patent: 3342431 (1967-09-01), Mouissie
patent: 3442580 (1969-05-01), Winkler
patent: 3529890 (1970-09-01), Buon
patent: 3582014 (1971-06-01), Jorgensen
patent: 3692392 (1972-09-01), Brill
patent: 3734606 (1973-05-01), Irving
Bell Edward L.
Lewis C. R.
Smith Robert E.
Stephan Steven L.
The Singer Company
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