Motion Picture Herald (Mar-Apr 1945)

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Pre-Season Special! Brand New BLOWERS Order Now in Time for This Summer's Cooling ! Six to Eight Weeks Delivery Direct from Factory AT 1942 CEILING PRICES ... A limited quantity of brand new blowers are now available to replace your wornout, obsolete or broken-down fans or blowers. Pre-war heavy gauge steel construction. Complete with drives. Will pleasantly cool and ventilate the theatre with 100% fresh air every iy2 to 3 minutes when proper size is installed. MAT TYPE AIR WASHERS also available from $115.00 To avoid unnecessary delay, mark your order "AA5 MRO CMP-5" and send it NOW. Theatres may issue this priority for maintenance, repair or operation. Write for Special Air Conditioning Folder. Standard discharge is bottom horizontal CFM Output With Rebuilt Motor* Approx. Shipping Weight 5,500 $106.50 300 8,500 143.50 375 1 1,000 190.75 425 13,500 230.00 500 22,500 290.00 575 27,500 342.00 700 *All motors in perfect working condition — guaranteed 1 year. If no motor wanted, the ceiling price will be allowed. S. 0. S. CINEMA SUPPLY CORP. 449 WEST 42ND STREET Telephone: LOngacre 3-4040 NEW YORK 18, N. Y. IF YOU CAN'T GET THE SUPER-CINEPHOR YOU WANT .... *D<mt ^(ame llactr 'DeaC&i You have probably been looking forward to equipping your projectors with B&L SuperCinephor Projection Lenses. You've been looking forward to the clearer, more brilliant screen images that are possible with these outstanding Balcote* surfaced lenses. Now, you may have been told by your dealer that you will have to wait a little longer. That's bad news, we'll agree . . . but not nearly as bad news as it would be if Bausch & Lomb was unable to meet its urgent military demands for optical gunfire control instruments. Under these circumstances we feel that you won't mind this extra wait . . . and you won't blame your dealer. Bausch & Lomb Optical Co., Rochester 2, N.Y. BAUSCH & LOMB ESTABLISHED 1853 *Balcote is the revolutionary new Bausch & Lomb iens surface coating which minimizes reflections and internal "flare" and permits the transmission of 30% more light. Lay Out Your Electric System For Permanence a basic and extensive element of a theatre is the electrical installation. How efficient this electrical installation will be after the theatre is in operation will depend wholly on what care and intelligent judgment were exercised in the original planning. While the design work involved in an electrical installation should be left to the architect and engineers, the theatre owner or manager who has a working knowledge of specific needs peculiar to theatre operation is in a position to indicate what he wants and to see that he gets it. In the first place, it is quite hard for an architect or engineer to tell exactly, beforehand, what the electrical demand load will be in a theatre until the theatre owner makes known the quantity and type of equipment to be purchased. In an electrical equipment installation, and especially the lighting end of it no set rules can take the place of the judgment and experience that an informed theatre operator possesses. All too often it turns out that the mains or electrical wires from the transformer are not of sufficient size to carry the entire load, and that generous allowances have not been made in their sizes for any additional loads, occasioned by future extension of the equipment, without causing excessive voltage drop or undue heating. Sizing of the system, in order to have at all times the proper voltage present on which the power and lighting equipment is rated to operate efficiently, is very important, and the person who must pay the bills and operate the theatre is the one who holds the bag if voltages that are too high shorten the life of lamps and materially affect the useful performance of the electro-mechanical equipment. Also, voltages that are too low will reduce the light output from the lamps and cut down the overall efficiency of the motors, especially motor-generator sets, with resultant light fluctuation on the screen. SWITCHBOARD AND LEADS The main electrical panelboard should always be installed in a spacious, dry room, and so located that it will be in the most advantageous spot for convenience in service and maintenance work, and be located for the easy hookup of the various circuits feeding from this panelboard to all parts of the theatre. Extreme care should be exercised that the mains, or feeders, do not run too close to the boiler, over or under heating pipe headers, 01 in inaccessible places where dampness ot water might penetrate. In this way the security and efficiency of the wiring will be assured, with neat runs of wiring, firm connections and soldering, smooth taping of $ wires, and proper attachments to the fittillp at the panelboard. It should be made certain that the main distribution panelboard will be arranged in sections, with the proper amount of wiring circuits, switches and fuses to take care of th< power load of the theatre adequately, wit! BETTER THEATRES. MARCH 3, 1941 r FENSIN SEATING company^ ^ 62 EAST 13th STREET * CHICAGO 5