Journal of the Society of Motion Picture Engineers (1930-1949)

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A NEW SIXTEEN MILLIMETER MOTION PICTURE CAMERA JOSEPH A. DUBRAY* The Bell & Howell Company has recently brought out a new model 16 mm. camera, which is known as the Filmo Model 70-D. It presents such a departure from the Design 70 models, that it is not expected to supplant them but is considered as an entirely new member of the Filmo family. Some of the engineering developments achieved in this apparatus will be described. It is well known that the Filmo camera is of the spring motor type, that it has a total capacity of 100 feet of 16 mm. film, and that each complete winding of the spring motor permits, if desired, an uninterrupted run of 25 feet of film. The camera, as shown in Fig. 1, is equipped with a turret, T, capable of holding three photographic objectives and also with a spring motor winding key, W, of new design. It is also equipped with three dials, one shown at F indicates the footage run through the camera, the second at 5 serves to set a governor to run the camera at any desired speed from 8 to 64 pictures per second, and the third at E serves as a guide and instructor in regard to exposures in relation to the speed at which the camera is operated. The camera turret can be revolved in either direction to bring the desired lens into its proper photographic position. The lens seats shown at L are ground during the assembly of the apparatus, insuring the standard 0.690 in. distance from the lens seat to the film plane. An audible click, caused by the spring-controlled roller, A, falling into a notch provided in the camera frame, assures the operator that the lens is properly set and the camera ready for operation. This position is also controlled by two supplementary rollers and * Bell & Howell Company, Chicago, 111. 427