Film take-up spool

Details Film take-up spool Film take-up spool

1980-05-09

1981-06-30

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 74, G03B 104, B65H 7528

Patent

active

042758556

ABSTRACT:
A film take-up spool is constructed with the pitch of the pawls thereof determined so as to be longer than the pitch of the perforations of film on condition that, in at least the first round of the film wound around the take-up spool, the perforations of the film shall be completely engaged with corresponding pawls.

REFERENCES:
patent: 1996782 (1935-04-01), Wood
patent: 2379690 (1945-07-01), Cunningham
patent: 3429245 (1969-02-01), Novak
patent: 3484053 (1969-12-01), Rehn

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