Society of Motion Picture Engineers : incorporation and by-laws (1919)

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The Chicago Stage lamp, Fig. 9, is unusual in having the flame carbons at right angles. The Joyce flame arc lamp has been used somewhat in industrial mo zing picture work. The Klieglight, Fig. 11, is a high amperage (30 to 40 amperes) lamp, with horizontal carbons. The lamp is mounted on a pedestal with casters, and is used for side lighting. The lamp is very powerful, and so is usually diffused by a large glass screen. A low weight lamp with vertical flame carbons is also made. The portable Klieglight is shown in Fig. 10. The Macbeth Co. is well known in the photo-engraving field, and have recently produced a tilting lamp, which is apparently of considerable greater efficiency than their usual photo-engraving lamp. The lamp is designed so that the light can be directed to any part of the stage, both vertically and horizontally. The tilting lamp is designed to burn on A.C. and D.C. and, in case of 220 volts, two in series. 20