Flow camera film transport

Details Flow camera film transport Flow camera film transport

1975-10-09

1977-02-15

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

352 78R, G03B 104, G11B 1532, G11B 2304

Patent

active

040078892

ABSTRACT:
A flow camera having film that moves only when an exposure is being made. A three-piece cassette is assembled and coacts with film path rollers for easy threading upon the rotation of a knob. Subsequent rotation of the knob fastens the cassette in place and positions capstan and dancer rollers for defining the operating film path. A double spring determines the egress film tension and a lever-roller combination having mechanical connection to the ingress dancer arm determines the ingress film tension. A fast slow motion is provided by acting upon the mechanical connection between the ingress dancer arm and the ingress film clutch.

REFERENCES:
patent: 3008661 (1961-11-01), Estes et al.
patent: 3029032 (1962-04-01), Reed

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