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MOTION PICTURE PROJECTION 10T
phase Weston indicating watt meters, one Weston single indicating watt meter. This serves to show the wattage used in running the various machines. The two lower machines are without meters, which are connected across the two, coming out of the bottom of the board, which indicate in watts the power being taken in any of the generators. In this manner the current being used can easily be determined. The voltage and amperage may be obtaind from the meters on the individual panel or from the interior of the instruments in the booth.
There are 10 plugging pockets on the board, two being connected with each machine. The two cables shown coming out of the board connect with the main switchboard in the booth. It is possible, therefore, to plug one or two arcs on any of the generators or for comparative test to run two generators simultaneously with one arc on each.
This switchboard contains both current transformers, voltmeter multipliers and resistances and other necessary switches, cutouts and accessories.
The machines consist of two Type "S" Simplex — one Simplex Mazda equipment with A. C. and D. C. regulator and one Simplex with 1J^ to 1 shutter — 5 to 1 movement and Argus sheck adapter. This machine is also equipped with Feaster non-rewind. All projectors are enameled battleship gray with fittings in nickel. Each machine is equipped with volt and ampere meters on front panel, also Robin Cinema electric speed indicators, lamp house with Simplex arc periscope, which throws the image of the arc on the walls or ceiling. The Mazda lamp, A. C. transformers and D. C. rheostats are located in the floor