The Film Daily (1935)

■HHHDMK {Saturday, Nov. 23, 1935 THE -22H DAILV UILDERS ING FOR THEATERS ■litioning Co., Inc. For summer cooling well distributed grilles at the floor line will produce good jsults and it is also a fact that recirculated air may be taken from the ceiling line nder some conditions with equally good results. For heating there is one place for circulation and that is at the floor line. It is practically impossible to satisfac>rily heat a large auditorium with warm air supplied to the upper portion of the room, nless there is a positive means of withdrawing cold air from the lowest point. Apparatus used for treating the air in theater conditioning does not differ in any 1reat degree from that used in other classes of buildings except in the matter of size ind details of temperature control, which take into account the problems of distributor) as mentioned above. Sleam is usually supplied to finned copper heating surface which heats the air jpplied to the auditorium. In small theaters the steam boiler is sometimes d is jensed with and direct fired furnaces used to heat the air directly. The general use of lopper heating coils for blast heat has given rise to a general impression that this jorm of surface is in some way more efficient than cast iron heating surface. A pound of coal or a gallon of oil will produce exactly the same heating effect *ith either type of surface. Copper radiation has not been adopted in place of iron jecause of its efficiency, but rather on account of its compactness and lightness, ease f handling and also because it is cheaper. The same impression prevails regarding extended surface coils for cooling and delumidifying as compared with spray type conditioners. Convenience, cheapness and lompactness are good fundamental reasons for using coils instead of air washers, but liny claim for greater efficiency is, in the writer's opinion, founded upon purely ictitious reasoning. An instance of the falseness of many claims made for coil cooling is the oftepeated statement that coils constitute "dry surface" cooling whereas air washers are I'wet surface" and therefore "make the air damp." Both systems remove moisture from •he air (de-humidify) if they are performing the functions for wh'ch they were designed. The coils are completely covered with water which has been condensed out of the air, o by no stretch of the imagination can they be termed "dry coils." In the very nature of the job they are supposed to do, they are decidedly "wet coils" and the air is actually cooled by contact with water. The fact that a thin wall of copper separates the outer film of water from the refrigerant does not alter the fact that cooling )f the air is accomplished by contact with water in BOTH cases. Either method will produce the desired result in air conditioning and while the two mediums have slightly different characteristics, both have certain advantages which make the choice a matter of individual conditions. In selecting apparatus for theater air conditioning, perhaps the most important item to be considered is the means for producing refrigeration. The principal source of heat in theater air conditioning is that given off by the occupants and this is true to a much greater extent than in any other type of building. In some theaters as much as 90 per cent of the refrigerating load is caused by heat of occupants. As most theaters are fully occupied for only a small portion of the time, this fact calls for a means of refrigeration that is flexible to get best efficency with this widely varying load. The cheapest and simplest form of refrigeration for air conditioning is the (Continued on Page 6) All Set to Serve You / National Service never relaxes. It is ready to help your renovation, re-equipment and repair problems. Only equipment of KNOWN QUALITY. Carpets, seating, screens, projectors. Send for catalog. National is PREPARED to SERVE your theatre. NATIONAL THEATRE 92 Gold St. or office Nearest You SUPPLY CO. New York, N. Y. » » EQUIPMENT FIELD NOTES « «c New York — Complete Holmes sound projection equipment has been installed in Temple Emanuel, Paterson, by the Ruby Camera Exchange. New York — One of the foremost improvements in theater chair construction is claimed by Ideal Seating Co., in the new and improved full ball-bearing, full compensating, and self-aligning hinge which feature the new chair now being put out by that company. The hinge requires no oiling or servicing, it is claimed, as the bearings are packed in grease and completely enclosed and protected from dust and dirt. The seat it is also said is smooth, easily operated, with six cushioning stops affecting absolute silence. Chicago — Offices and manufacturing facilities of Golde Manufacturing Co., makers of rewinds, spotlights and projection booth accessories, have been moved to larger quarters at 1728 North Damen Ave., Chicago. With the approaching change to the larger reel, the company also announces the development of a new line of hand re-winders for the handling and inspection of the new standard 2,000-foot reels. Chicago — Herman A. DeVry, Inc., is preparing a bulletin which will show the characteristics of the DeVry unit sound projector as designed by the company. Flint, Mich. — The Dixie has installed Pictur-Pone "Third Dimension" sound equipment. New York — The Hurley Screen Co. is now arranging with members of the Independent Theater Supply Dealers' Association to distribute its product throughout the country. The firm, which installed what is called the largest screen in the world, in the Radio City Music Hall, states that a thorough test in the fadeometer with four other leading sound screens showed that the new Hurley standard was the only one that stayed white. Portland, Ore. — Western Sound Equipment Co. is installing new allsteel cable theater chairs in the Sunnyside, which opens early next month. Columbus — "Third Dimension" sound equipment has been installed at the Dixie here by Pictur-Fone. Cincinnati — New CTR Wide(Continued on Page 6) S. 0. S. BARGAIN FLASH 65 — Griswold or Universal 35 mm. splicers — fair — from 3.00 95 — Asst. Sizes Reel Shipping Cases I.C.C. approved, new and used from 1.15 1500— Reels. 2000 ft. Safety Steel. enamel finish, brand new 49 125 — Mieh'.ing's famous book "Sound Projection", press copies 1.49 S. O. S. CORPORATION, 1600 Bdway.N.Y.C. "MODERN TIMES" Charlie is pretty bewildered in this picture of modern efficiency. Modern efficiency, however, is old stuff to us weavers up at the Alexander Smith plant. In the course of a year, we make thousands and thousands of tests of dyes, wools and other raw materials with the result that our carpets stand up under all sorts of abuse. Which is one reason you find them in so many theatres. ALEXANDER SMITH CARPET