Japanese Patent JPS5122376

B1

1,081,429. Cameras and cassettes therefor. AGFA A.G. Sept. 4, 1964 [Dec. 20, 1963], No.36384/64. Heading G2A. A film cassette has on its exterior a feature having two abutment surfaces, one of which serves to locate the cassette accurately in the camera, and the other being indicative of the film sensitivity and controlling a corresponding sensing device accordingly in the camera. As shown, the cassette 3 has a flattened part 28, on which is located a T-shaped member 9 (see also Fig. 4 not shown). The cassette is inserted in the direction of arrow a into the camera, where it is held by a clip 6, 8. The shoulders of the member 9 locate against the ends of two projecting parts of the clip, such as 8a, so providing accurate positioning of the cassette. The leg of the T-member 9 engages against a lug 12a of a resilient tongue 10a stamped out of the clip 6, 8. Two contacts 11, 14 are shown (there may be more), each being connected through a separate fixed resistance to a galvanometer. As shown in Fig. 2, the tongue 10a is lying against contact 11. If the leg of member 9 does not project very far, then it does not move lug 12a to any great extent when the cassette is inserted. However, if it does project sufficiently far, lug 12a is pushed far enough for tongue 10a to leave contact 11 and engage contact 14, thus bringing a different resistance into the galvanometer circuit. The galvanometer is rotatable as a whole, and can also be set manually according to exposure conditions.

JP6960864A

July 09, 1976

December 11, 1964

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G03B7/24; G03B7/00; G03B17/30; G03B19/04; G03C3/00

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