US 3,945,077 AGranted

Strip cleaning mechanism

OwnerJames W. Elsbery, Raymond Marshall Smithinventors

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Abstract

A motor drives a film strip take-up reel to draw moving picture film from a freely rotating film supply reel through a film cleaner including a pair of oppositely rotating brushes also driven from said motor. The brushes are disposed on aligned and parallel shafts disposed at a level below that of the supply reel and above that of the take-up reel; with the film following a path generally downwardly from the supply reel about the lower portion of the cleaner brush closest to the film supply reel, up between the cleaner brushes and over the upper portion of the film cleaner brush closest to the film take-up reel, and thereafter generally downwardly onto the film take-up reel. The film path so taken by the film provides for an appropriate tension on the film which in turn insures efficient and proper film cleaning.

Claims10

Dependent claims

A strip cleaning mechanism comprising:

a pair of strip cleaning brushes disposed on aligned and parallel brush shafts spaced a distance to accomodate the brushes with their bristles in close proximity to each other;
drive means for rotatably driving said pair of brushes in the same direction;
a strip supply reel rotatably disposed on a supply reel shaft positioned parallel with and to one side of said brush shafts, and at a level which is relatively higher then the level of said brush shafts;
a strip take-up reel disposed on a take-up shaft positioned parallel with and to the other side of said brush shafts and at a level which is relatively lower than the level of said brush shafts;
drive means for driving said take-up reel;
said supply reel, strip cleaning brushes, and take-up reel being arranged to define a strip cleaning path extending relatively downwardly from said supply reel, about the lower portion of one of said cleaning brushes, up between said cleaning brushes, about the upper portion of the other one of said cleaning brushes, and relatively downwardly to said take-up reel;
and said strip cleaning path being such that when a film strip extends therethrough from said supply reel, about said brushes, and to said take-up reel that a predetermined tension is applied to the film strip to insure proper contact with said brushes and proper cleaning of the film strip.

4 more elements

Dependencies are inferred from the claim text.