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530 CINEMATOGRAPHIC ANNUAL
Model B, with the lamp house at the side, instead of behind. The lamp used is a 100-Watt bulb. The machine can be adapted to any current between 32 and 250 volts, and a special 6-Volt model is made for use with an ordinary storage-battery. Either 1-inch or 2-in lenses may be used, but the smaller lamp used limits the effec
16mm. Movies for Business: the Model C Kodascope with its carrying-case and screen, as supplied for salesmen, etc.
tive picture size to about 30x40 inches. Single frames can be projected, but there is no reverse. The rewind may be either by hand or by motor. A special model of the Kodascope C is supplied with a carrying case at one end of which is built a translucent screen; this is called The Business Kodascope, and is intended for use by salesmen, etc. Kodacolor pictures cannot be projected by the Model C Kodascope, nor the Business Kodascope.
The companion to the Bell & Howell Filmo camera is the Filmo projector. Its makers have standardized on a single basic design, but produce several models with varying optical and electrical equipment to meet differing needs. The Filmo projector stands on a short pedestal rising from a good-sized, oval base. The essential units of the machine are arranged for maximum simplicity of operation. The light is from a lamphouse directly behind the film aperture, with the shutter between the light and the film. The shutter has an opening of 216 degrees, and the film movement is a special 9 to 1 movement which reduces the interval between successive pictures on the screen to 1/160 of a second, reducing flicker even at low speeds. There is the usual safety-shutter for still projection, in this case in the form of a fine metal grill, and in addition a forced air-cooling system does a great deal to dissipate the heat generated. The projector is reversible; the rewind normally supplied is an un-geared, hand type, but it can be replaced by a geared one. As is usual with 1 6mm. projectors, the capacity of the