Motion Picture Herald (Mar-Apr 1945)

LICENSED UNDER U.S. PATENTS OF WESTERN ELECTRIC CO. INCORPORATED SOUND HEADS AMPLIFIERS HIGH QUALITY BRILLIANT TRUE LIFE-LIKE REPRODUCTION PLUwr IN TYPE FILTER CONDENSORS CLIMATITE TREATED TRANSFORMERS AND CHOKES-CAUBRATED STEP-TYPE VOLUME CONTROLAND MANY OTHER OUTSTANDING FEATURES PERFECT REPRODUCTION PERFECT DISTRIBUTION CEUULAR HORN FOR HIGHS FOLDED TYPE HORN BAFFLE FOR LOWS LIGHT MASTER ONE KILOWATT PROJECTION ARC LAMPS SOUND MASTER PROJECTOR BASES THE BALLANTYNE CO. 1707-11 DAVENPORT STR. OMAHA 2 NEBR. U.S.A. sene or gasoline. Notice especially any grooves for oil, as in bearings, to see that they are not clogged. Dirt or hardened grease in them will prevent the flow of oil, which means poor lubrication in vital parts, and that means trouble — lots of it — sooner or later, and probably soon. ATTENTION TO LUBRICATION Observe oil and grease cups, and oil baths, to make sure that they have enough lubricant in them. Have the oil cups lost their caps? See that they are replaced promptly with some sort of covers so that dirt doesn't get into the oil. The manager will want to know that the proper oil is being used in each specific case. Again, how much he needs to investigate this depends upon his particular situation — the kind of staff he has, its competence and reliability. But he should be satisfied that the machinery is getting the proper grade of oil, as recommended by the manufacturer or someone else who is thoroughly familiar with the equipment. It is sufficient here to point out that, in any instance? the oil should be heavy enough to form a consistent film between moving parts, at the temperature which these parts generate, and light enough to flow freely under the action of those parts, without running out. If the manager notes anything to make him suspect that the oil is not the right kind, he should get in touch with the manufacturer of the equipment, or call in a competent man from a local oil company. Machinery out of adjustment is working itself into a state of collapse. Watch out for makeshift repairs, made perhaps in an emergency. The equipment was designed with bolts, nuts, etc., of specific size and kind ; substitutes should be retained, as a rule, only as long as an emergency requires. Obviously it is well for a manager to be able to hear when machinery is running "contentedly." A piece of equipment out of adjustment will not sound like one in which all parts are "in tune'1' with each other. He should listen to it run; any "off sound" should be investigated promptly. MOTOR-GENERATOR SETS Motor-generator sets are part of the projection equipment, the one class of machinery in which most every manager is likely to have competent technical assistance. But he will want to include them in his inspection of electric power apparatus. With proper cleaning and lubrication, motor-generators are tough. The commutator, its brushes, etc., require skilled and conscientious attention, however. It should be cleaned every two or three days. Arcing is a sign of something wrong — illfitting brushes, copper or carbon dust in the grooves formed by the commutator bars, overload and several other conditions. Arcing will cause the commutator to wear rough. A rough surface (if not so uneven as to require smoothening on a lathe) may be sandpapered smooth. However, if the projectionist is not of such skill that he can be trusted with this job, and there is no staff electrician, a competent electrical repair man should be called in to do the smoothening. It is not a job for unskilled hands. Designed for Durability bTABILARC Motor Generators Fine engineering and construction are respond sible for the dependable service STABILARC Motor Generators are giving users today. For maximum performance we suggest frequent and regular attention. 35-42-60-80 VOLT MULTIPLE AUTOMATIC DEVICES CO. 1033 LINDEN ST. ALLENTOWN. PA. Export Office: 220 W. 42nd St., New York City Also Manufacturers of Allentown Steel Curtain Tracks and Curtain Machines mom efficiency in name* bulbs; . NOW AVAILABLE BECAUSE OF IMPROVED ceiron MANUFACTURING METHODS ] Today, more than ever be fore, continuous, dependable performance from Rectifier Bulbs is important. Improved manufacturing methods have made Cetron Rectifier Bulbs a "must" for motion picture projector equipment. To prove Cetron Rectifier Bulb superiority . . . just try them. Send for descriptive circular. CONTINENTAL ELECTRIC COMPANY CHICAGO: GENEVA, ILL. NEW YORK: 903 Merchandise Mart 265 W. 14th St. n LEARN MODERN THEATRE MANAGEMENT Advance to better theatre positions. BIB opportunities for trained theatre men and women. Free catalog. 17th year. Theatre Managers Institute 380 Washington St., Elmira. N. Y. Fl/WOR iCO/VOM Special blend of pure vegetable oils refined and colored for use in wet or dry poppers. Also popping oil, salt, cartons, sacks. h7 rJOUVflME |AM€RICA'S FINEST POP CORN AMERICAN POP CORN CO. SIOUX CITY, IOWA *4 READ THE ADS — they're news! BETTER THEATRES. MARCH 3. 194: