Exhibitors Herald and Moving Picture World (Apr-Jun 1930)

April 12, 1930 Exhibitors Herald-World 93 The complete lamp contains as a part of the unit an automatic arc control adjusted to operate at a variance of a fraction of a volt at the arc. The advantage of the reflecting arc lamp is that it will operate at from 20 to 25 per cent of the electrical current necessary to operate the old style arc lamp. The carbons used are much smaller in size making an additional saving. The reflector arc is now accepted as a necessity by progressive exhibitors, because, in addition to saving electric current, it produces a flat even field of bright crisp white light which is very desirable in motion picture projection. Prices range from around $125 to $550. Rrenkert Light Projection Company, 7348 St. Aubin & Grand Boulevard, Detroit, Mich. L. J. Gardiner Company, 935 W. Goodale Boulevard. Columbus, O. HALL & CONNOLLY, INC., 24 Van Dam Street, New York City. J. H. Hallberg, 29 W. 57th Street, New York City. KLIEGL BROTHERS, 321 W. 50th Street, New York City. The Lit-War Company, Wellston, O. The J. E. McAuley Manufacturing Company, 554 W. Adams Street, Chicago, III. Morelite Company, Inc., 600 W. 57th Street, New York City. Perfex Electric Company, 125 Southard Avenue, Toledo, O. W. G. Preddey, 187 Golden Gate Avenue, San Francisco. Cal. STRONG ELECTRIC CORPORATION, 2501 La Grange Street, Toledo, O. Lantern Slides Refer to SLIDES Lenses t'OR motion picture theatre service A there are projection lenses and condensing lenses. The latter are also used in projection but are placed in the lamphouse and condense the rays to a spot on the aperture. Projection lenses are objective lenses placed in the projector head. The prime requirement of a projection lens is to give a bright, well defined picture on the screen without any distortion or color rays. These lenses are made in four sizes: Eighth, quarter, half and three quarters (diameters, respectively, of 1 11/16, 1 5/16, 2 25/32 and 3 1/4 inches) . The one-eighth and one-quarter sizes are furnished in equivalent focii of two inches E. F., to eight inches E. F. The half-size is furnished in equivalent focii of four and a half inches E. F. to ten inches E. F., and the three-quarters in equivalent focii of from six inches E. F. to ten inches E. F. There is also procurable a bifocal projection lens with a range of from one half to three quarters of an inch in focal length, designed to eliminate the change of lenses in shifting operation from sound to silent films, and vice versa. All the sizes named are standard. Focal lengths are determined by the length size of the picture desired. Prices range from $10 to $150. BAUSCH & LQMB OPTICAL COMPANY, Rochester, N. Y. G. P. Georz American Optical Company, 317 E. 34th Street, New York City. ILEX OPTICAL MFG. COMPANY, 726 Portland Avenue, Rochester, N. Y. Jones & Hewitt Company, 2-4 Gordon Street, Boston, 30, Mass. Kollmorgen Optical Corporation, 35 Steuben Street, Brooklyn. N. Y. PROJECTION OPTICS COMPANY, INC., 203 State Street, Rochester, N. Y. Seebold Invisible Camera Corporation, 739 Clinton Avenue South, Rochester, N. Y. Semon Bache & Company, 636 Greenwich Street, New York City. Spencer Lens Company, 442 Niagara Street, Buffalo. N. Y. Sussfield, Lorsch & Schimmel, 153 W. 53rd Street, New York City. Lifts and Elevators for Orchestra, Organ, Stage and Horns T IT/ ITH the advance in showmanship many new types of equipment have become factors in motion picture presentation and its supplementary entertainment. Not the least of these new factors are the lifts and elevators which play such an important part in the success of programs today. The modern theatre has this equipment. Acme Stage Equipment Company, 191 Lafayette Street, New York City. BRUCKNER-MITCHELL, INC., 532-540 W. 22nd Street, New York City. PETER CLARK, INC., 544 \Y. 30th Street, New York City. Gallagher Orchestra Equipment Company, 616 Elm Street, Chicago, 111. Lighting Control Equipment 'T'HE modern theatre, with a well * balanced and effective lighting system, has made many demands on the manufacturers of lighting control equipment. Elaborate color effects must be possible and to change the lighting and gradually merge the light from one color to another without attracting the audiences a very flexible control system is required. Even the small control systems permit the operator to produce hundreds of color shades. Generally each color group has its own master control which is cross-interlocked with the ground master wheel device. Efficient control systems are available for every size house, no matter how small or how large. FRANK ADAM ELECTRIC COMPANY, 3650 Windsor Avenue, St. Louis, Mo. HUB ELECTRIC COMPANY, 2225 W. Grand Avenue, Chicago, III. Major Equipment Company, 4603 Fullerton Avenue, Chicago, 111. Ward Leonard Electric Company, 37 South Street, Mt. Vernon, N. Y. WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY', East Pittsburgh, Pa. Lighting Fixtures and Decorative Lighting W HILE lighting fixtures constitute one of the outstanding features of the theatre today their style and application are obviously best determined by the individual treatment of the theatre and its requirements. It is significant, however, that a number of leading manufacturers have established special departments to give time and attention to the subject of theatre lighting and fixtures. Prices range from $7.50 up. E. C. Adam Company, 902 Pine Street, St. Louis. Mo Art Lamp Manufacturing Company, 1433 S. Wabash Avenue, Chicago, III. Art Metal Manufacturing Company, 1921 E. 61st Street, Cleveland, O. Claud Neon Lights, Inc., 50 E. 42nd Street, New York City. Curtis Lighting Company, Inc., 1119 W. Jackson Boulevard, Chicago, 111. I. P. Frink, Inc., 239 Tenth Avenue, New York City. The Edwin F. Guth Company, 2615 Washington Street, St. Louis, Mo. Henkel & Best, 431 N. Michigan Avenue, Chicago, 111. HUB ELECTRIC COMPANY, 2219 W. Grand Avenue, Chicago, 111. KLIEGL BROTHERS, 321 W. 50th Street, New York City. Mandel Brothers, Inc., State and Madison Streets, Chicago, 111. Metalarts Studios, 451 E. Ohio Street, Chicago, 111. Metal Craftsman Company, 27 E. 22nd Street, New York City. Morelite Lamp Company, 600 W. 57th Street, New York City. The Perfec Lite Company, 1457 E. 40th Street, Cleveland, O. Victor S. Pearlman Company, 535 S. Wabash Avenue, Chicago, 111. “Gold Medal” SAFETY PLATFORM LADDER EXTRA CONVENIENCE, LASTING STABILITY 8c MAXIMUM SAFETY . . . FOR such daily jobs as changing electric signs — For the occasional tasks of cleaning and rigging back stage — For a great range of maintenance work all over the theater, this unusual ladder is ideal. Some of the features: Broad enclosed platform. Hardwood top slotted for tools. Rigid back with rungs for a helper to mount. Exceptionally light for its strength. Aeroplane spruce, reinforced with steel — cadmium plated. Sizes 5 ft. to 20 ft. Your Mill Supplies Jobber has it Or , write us for details THE PATENT SCAFFOLDING CO. Chicago, 1550 Dayton St. Boston, 49 Ellery St. Atlanta, 44 Haynes St., N.W. Philadelphia, 2835 Bridge St. St. Louis, 6168 Baitmer Ave. San Francisco 270 13th St. Pittsburgh, 1252 Voskamp St., N. S. L. I. City. N. Y., 3821 Sherman St.