Long film receptacle

Details Long film receptacle Long film receptacle

1992-06-26

1995-01-31

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Mounted coil holder or spindle

2425951, 242535, B65H 1808

Patent

active

053853172

ABSTRACT:
A film receptacle for winding a long length of film including a film box having an entrance for admitting a film and a winding member provided in the film box. The winding member including a curled holding portion for winding the film admitted through the entrance and holding for a roll of the film thus wound. The holding portion has a resilience to an expanding force of the film roll in the holding portion, and the resilience is such that the increase in the radius of curvature of the holding portion when the film is wound one turn in the holding portion is substantially equal to the thickness of the film. Thus, newly entering film is wound over the roll of the already wound film, and no slip or friction occurs within the film roll, which facilitates continuous admission of a long length of film at a constant force.

REFERENCES:
patent: 1930335 (1933-10-01), Bornmann
patent: 2484248 (1949-10-01), Roehrl
patent: 2614763 (1952-10-01), Horton et al.
patent: 2709050 (1955-05-01), Mansberg
patent: 3288389 (1966-11-01), Gersch et al.
patent: 3333785 (1967-08-01), Baur et al.
patent: 3356311 (1967-12-01), Winkler et al.
patent: 3715963 (1973-02-01), Le Cover
patent: 4068809 (1978-01-01), Koester
patent: 4482232 (1984-11-01), Engelsmann et al.
patent: 4838497 (1989-06-01), Kramer et al.

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