Year book of motion pictures (1951)

heating unit. Built in sizes from three to 40 tons, the units can be installed in multiple patterns, so that all or a few may be operated to meet cooling requirements. U. S. Air's upright air conditioners are made in 2, 5, 5, 7J/2 and 10 ton sizes for multiple applications in smaller houses, or for cooling limited spaces such as lobbies and offices. The company also is offering an improved type of long-lived cooling tower where such application is desired. Record Sales of Typhoon Packaged Air Conditioning gALES OF TYPHOON" packaged air conditioning to theaters reached a new high in 1950, according to James F. Dailey, president of the company. One of the major factors involved in Typhoon's record year was a deal with the theater supply division of RCA under which the latter took over Typhoon sales nationally. Another reason given for the success of Typhoon in theater sales was the growing acceptance of the new 1 5 and 20 ton sizes. These larger units have now be?n employed by a number of theaters where a greater number of smaller units was not practicable, and their performance is said by the firm to have come up to all expectations. The fact that theaters are turning more and more to packaged units in place of central-station systems is reported to be in part the result of Typhoon's development of the "zone control" theory. When exhibitors complained that unequal distribution of audiences tended to upset the atmospheric conditions regulated by centrally located thermostats. Typhoon evolved the idea of placing packaged units right in the conditioned area, each with its own thermostat. Being regulated by the temperature of the return air from the same "zone" which it serves, each unit will, therefore, provide just enough cooling to take care of the actual requirements. The sale of Typhoon evaporative condensers also increased greatly during 19S0 as more and more users accepted the commonsense argument that these water-savers will pay for themselves in a matter of a few years through decreased waterconsumption expenses. Indications are that the 1951 air conditioning selling season will be much earlier than normal, the company states. Sales so far this year are said to be well above even last year's record high, and in general the picture as of the end of February resembled the sales situation ordinarily existing in May or June, even without the sizeable government orders which have swelled Typhoon's output. Full 1951 Theater Line Announced by Carrier Corp. FULL LINE of air conditioning equipment designed for use in theaters is announced by Carrier Corp. for 1951 manufacture and distribution within the present limitations of the defense program. The 1951 product list includes five models of self-contained air conditioning units ranging from three to 1 5 h.p., an improved cooling tower for use with self-contained units in recirculating condenser water, central station Weathermakers up to 75 tons capacity for larger air conditioning installations, and a complete line of reciprocating, absorption, and centrifugal refrigeration equipment. Savings in scarce materials have been achieved through eliminating certain models using a high proportion of critical metals and through increasing capacities in several other lines. Carrier officials expect that this will make possible 1951 production of a substantial volume of both self-contained and central station equipment. Centrifugal Refrigeration Unit Produced by Trane ^NEW REFRIGERATION unit called the CenTraVac is listed as the most important development of interest to theater men that was made in 1950 by the Trane Co. of La Crosse, Wis. This is a centrifugal machine available in tonnages up from 50 which delivers chilled water to air conditioning units. The centrifugal water chilling unit is of particular interest to theater operators because it is compact, vibration-free and quiet in operation. Additionally, it is practically a self-contained push-button device, hermetically sealed, requiring no special care or attention. SCR Full Steam for Shearer To Fill Cycloramic Orders F. SHEARER CO., West Coast equipment house, increased its production capacity to take care of a heavy backlog of orders for the Starke "Cycloramic" screen manufactured by the firm. The company was reported working around the clock in an effort to keep pace with the demand for the screen from exhibitors in all sections of the country. Trans-Color Puts Convex Screen into Manufacture 'pRANS-COLOR SCREEN CO. of Kings Mountain, N. C, in 1950 started manufacturing a EENS convex screen created by Otto Hehn, the man whr invented Glascreen. The Trans-Color screen iv credited with giving an illusion of third dimension through the application of scientific principles. Other claims made for it are that it polarizes light, improves the quality of sound and color, virtually eliminates distortion and eye strain and provides a vision field of 80 degrees that insures a good view of the action on the screen from any seat in the house without glare or hot spots. According to Hehn, "keystoning" is done away with where the picture is projected downward, as from the balcony. This, he says, has the effect of creating a larger screen image. A perfectly square picture is achieved. Supporting and masking frames arc of duraluminum, making the screen easy to