Motion Picture Herald (Sep-Oct 1936)

American Blower Corp., 6004 Russell Street, Detroit, Mich. American Metal Products Co., 5855 Manchester Avenue, St. Louis, Mo. American Radiator Company, 40 W. 40th Street, New York City. Baker Ice Machine Company, 3601 No. 16th Street, Omaha, Nebr. The Ballantyne Co., 219 N. 16th St., Omaha, Nebr. Buensod-Stacey Air Conditioning, Inc., 60 E. 42nd Street, New York City. Buffalo Forge Co., 4084 Broadway, Buffalo, N. Y. Carrier Engineering Corporation, 850 Frelinghuysen Avenue, Newark, N. J. Clarage Fan Co., Kalamazoo, Mich. Coppus Engineering Corp., Worcester, Mass. Curtis Refrigeration Machine Company, 1956 Kienlen Avenue, St. Louis, Mo. The Carbondale Machine Company, Harrison, N. J. CondAir Corp., 30 Rockefeller Plaza, New York City. Delco Appliance Corp., Rochester, N. Y. The Fidelity Electric Co., Lancaster, Pa. Fedders Manufacturing Company, Buffalo, N. Y. Frigidaire Corporation, Dayton, 0. Frick Company, Waynesboro, Pa. General Air Conditioning Company, Inc., 155 E. 44th Street, New York City. General Electric Co., Schenectady, N. Y. Good-All Electric Manufacturing Company, 251 Spruce Street, Ogallala, Neb. Hitchen Engineering Company, 155 E. 44th Street, New York City. Ilg Electric Ventilating Company, 2850 No. Crawford Avenue, Chicago, 111. Ingersoll-Rand Co., 11 Broadway, New York City. Johnson Service Company, 1355 West Washington Blvd., Chicago, 111. Kauffman Air Conditioning Company, 4485 Olive Street, St. Louis, Mo. Kelvinator Corporation, 14250 Plymouth Road, Detroit, Mich. Knowles Mushroom Ventilator Company, 41 N. Moore Street, New York City. Lipman Engineering Company, 415 Van Braam Street, Pittsburgh, Pa. Minneapolis-Honeywell Regulator Company, 2822 Fourth Avenue, South, Minneapolis, Minn. National Air Conditioning Corp., 59 West Wacker Drive, Chicago, 111. National Fan & Blower Corp., 543 West Washington Blvd., Chicago, 111. National Theatre Supoly Company, 92-96 Gold Street, New York City. Niagara Blower Company, 6 E. 45th Street, New York City. Ozone Air, Inc., 308 Monroe Avenue, Grand Rapids, Mich. Parkinson Heater Corporation, 325 West Huron Street, Chicago, 111. Per-Fu Company of Hollywood, 1637 N. Stanley Avenue, Hollywood, Calif. Peterson Freezem Sales Company, 2620 Charlotte, Kansas City, Mo. Pictur-Fone Company, 212 W. North, Lima, O. Register & Grille Manufacturing Company, 70 Berry Street, Brooklyn, N. Y. Reynolds Corporation, 609 N. LaSalle Street, Chicago, 111. Servel Sales, Inc., Evansville, Ind. Sobel & Kraus, Inc., 525 E. 136th Street, New York City. S.O.S. Corporation, 1600 Broadway, New York City. Southern Fan Company, Atlanta, Ga. B. F. Sturtevant Company, Hyde Park, Boston, Mass. Supreme Heater & Ventilating Company, 1915 Pine Street, St. Louis, Mo. Tayior Manufacturing Company, 314 Monroe Avenue, Grand Rapids, Mich. Tiltz Air Conditioning Corp., 230 Park Avenue, New York City. The Typhoon Air Conditioning Company, 252 W. 26th Street, New York City. Uniflo Grille Company, 4646 Lawton Avenue, Dertoit, Mich. United Air Conditioning Sales Corp., Chrysler Bldg., New York City. United States Air Conditioning Corp., Northwestern Terminal, Minneapolis, Minn. Wittenmeier Machinery Company, 850 N. Spaulding Avenue, Chicago, Illinois. Wolverine Blower Works, 412 Prospect Avenue, N. E., Grand Rapids, Mich. York Ice Machinery Company, York, Pa. AIR PURIFICATION: OZONE ozone is a specific, unstable form of oxygen which rapidly breaks down into the ordinary form, but in so doing produces oxidation (cold burning) of impurities in the air, especially those which are characterized by unpleasant odors, which for the most part are readily dispelled with oxidation. Ozone is also deadly to many forms of microbe life, and its use as a purifier therefore does not cover a disagreeable smell with a (theoretically) agreeable one, but chemically removes the impurities and causes of odor by convert ing them in,to different and innocuous chemical substances. Ozone is produced by chemical action, ultra-violet rays, electric discharge, and a number of other means. Generators are available in various sizes, suited to lounges, toilet rooms or an entire theatre. Small units are inexpensive. Larger and more costly ones have blower and filter apparatus, while still others are designed for use in connection with central air-conditioning systems. A minute percentage of ozone in the air produces a sense of physical exhilaration and well-being, since it is oxygen in a form very readily utilized. Kozono Company, Charlotte Theatre Building, Charlotte, N. C. National Ozone Machine Company, 460 Massachusetts Avenue. Indianapolis, Ind. Ozone Air, Inc., 308 Monroe Avenue, Grand Rapids, Mich. AMPLIFYING TUBES these ARE electronic relays by means of which the weak electric currents created by a photocell, phonopickup or microphone, operate to control a stronger current, moulding it to an exact, but more powerful duplicate of the original. This process is continued through a train of tubes until a duplicate of the original sound current is obtained, which is strong enough to operate the loudspeakers. Amperex Electronic Products, 79 Washington Street, Brooklyn, N. Y. Arcturus Radio Tube Company, 730 Frelinghuyen Avenue, Newark, N. J. The Ballantyne Co., 219 N. 16th St., Omaha, Nebr. Herman A. DeVry, Inc., 1111 Center Street, Chicago, 111. Electrical Research Products, Inc., 250 W. 57th Street, New York City. General Electric Company, 1 River Road, Schenectady, N. Y. Hygrade Sylvania Corporation, Clifton, N. J. Hytron Corporation, 303 Fourth Avenue, New York City. Kenrad Radio Tube Corporation, Owensboro, Ky. Lafayette Radio Manufacturing Company, 100 Sixth Avenue, New York City. Lipman Engineering Co., 415 Van Braam Street, Pittsburgh, Pa. Motiograph, Inc., 4431 W. Lake Street, Chicago, 111. National Theatre Supply Company, 92-96 Gold Street, New York City. National Union Radio Corporation, 570 Lexington Avenue, New York City. Pacent Engineering Corporation, 79 Madison Avenue, New York City. Pictur-Fone Company, 212 W. North, Lima, O. Q. R. S. Neon Division, General Scientific Corporation, 4829 So. Kedzie Avenue, Chicago, 111. @ IMPROVED EXPANSION BOLT S3| Be sure of permanent, secure anchorage of theatre I II seats. Fasten them down with the Improved Chicago 111 Theatre-Style Expansion Bolts. Write us for attractive IH Dr'ces antl samples. y| CHICAGO EXPANSION BOLT CO. 132 S. Clinton Street Chicago, U. S. A. The EASY METHOD LEDGER SYSTEM (2 hoiks, each for 2 years) keeps dally and weekly records of your receipt* and expenses with carry-over columns. Price complete, $8.50. Cash with order or sent C.O.D. (A 2-year record for less than 2e per day.) The Federal Income Tax pages alone worth many times the price. Speelal prleea In quantity lots. EASY METHOD LEDGER SYSTEM SEYMOUR. INDIANA BLOWERS For Circulation of Heated Air For Building Up Pressure in Hot Air Heating Plants Capacities — 1,750 to 5,000 C.F.M. Prices from $18.95 to $49.95 TAYLOR MANUFACTURING CO. 314 Monroe Ave. Grand Rapids, Mich. RCA Radiotron, Inc., Harrison, N. J. Raytheon Production Corporation, 30 E. 42nd Street, New York City. Republic Radio Tube Corporation, Irvington, N. J. Safety Projector Company, 310 W. Second Street, Duluth, Minn. S. O. S. Corporation, 1600 Broadway, New York City. Theatre Sound Service, 65 Atlantic Avenue, Rochester, N. Y. Wenzel Company, 2507 So. State Street, Chicago, 111. • AMPLIFIERS IN function, as part of a sound reproduction system, these are panels or cabinets that take sound current from the photoelectric cell (or other source) and use it as a pattern to produce a similar but vastly more powerful current for operation of the loudspeakers. Modern compact apparatus may have an ampliying power of ten billion to one. Amplifiers today contain their own power supplies, needing only connection with an a.c. or d.c. power line, and dispensing with all auxiliary batteries, generators or rectifiers ; and in addition commonly supply polarizing voltage to photocells, and sometimes current to exciter lamps and loudspeaker fields. Very small, low-power amplifiers may be mounted on the projector, deriving their operating power from the main amplifying system. Atlas Sound Corporation, 1451 39th Street, Brooklyn, N. Y. Audio Research, Inc., 105-107 E. 16th Street, New York City. Better Hearing, Inc., 1 W. 34th Street, New York City. The Ballantyne Company, 219 N. 16th Street, Omaha, Nebr. Canady Sound Appliance Company, 19570 So. Sagamore Road, Cleveland, O. Cinema Supplies, Inc., 36-40 Glenwood Avenue, Minneapolis, Minn. Clough-Brengle Company, 1134 West Austin Avenue, Chicago, 111. Coast to Coast Radio Corporation, 125 W. 17th Street, New York City. S. H. Couch Company, Inc., North Quincy, Mass. Herman A. DeVry Company, 1111 Center Street, Chicago, 111. Electrical Research Products, 250 W. 57th Street, New York City. Electro-Acoustic Products Company, Fort Wayne, Ind Garrison Engineering Corporation, 51 Church Street, Great Barrington, Mass. Gates Radio & Supply Company, Quincy, 111. Good-All Electric Mfg. Company, 251 Spruce Street, Ogallala, Nebr. H. & A. Selmer, Inc., Elkhart, Ind. Hewes-Gotham Company, 520 W. 47th Street, New York City. Jensen Radio Manufacturing Company, 6601 S. Laramie Avenue, Chicago, 111. Kansas City Sound Service Company, 130 W. 18th Street, Kansas City, Mo. Lafayette Radio Manufatcuring Company, 100 Sixth Avenue, New York City. LeRoy Sound Equipment Corporation, 421 Lyell Avenue, Rochester, N. Y. The Lincrophone Company, Inc., 1661 Howard Avenue, Utica, N. Y. Lipman Engineering Company, 415 Van Braam Street, Pittsburgh, Pa. Mears Radio Hearing Device Corporation, 1 W. 34th Street, New York City. Mellaphone Corporation, 714 University Avenue, Roch ter, N. Y. Miles Reproducer Company, Inc., 112-114 W. 14th Street, New York City. Motiograph, Inc., 4431 W. Lake Street, Chicago, 111. National Theatre Supply Company, 92-96 Gold Street, New York City. Operadio Manufacturing Company. St. Charles, 111. Pacent Engineering Corporation, 79 Madison Avenue, New York City. Platter Sound Products Corporation, North Vernon, Ind. Pictur-Fone Corporation, 212 W. North St., Lima, O. Radio Receptor Company, Inc., 106 Seventh Avenue, New York City. RCA Manufacturing Company, Inc., Photophone Division, Camden, N. J. Remler Company, Ltd., 2101 Bryant Street, San Francisco, Calif. Safety Projector Company, 310' W. Second Street, Duluth, Minn. H. & A. Selmer, Inc., Elkhart, Ind. S. O. S. Corporation, 1600 Broadway, New York City. Theatre Sound Service, 65 Atlantic Avenue, Rochester, N. Y. Transformer Corporation of America, 69 Wooster Street, New York City. 46 Better Theatres