International projectionist (Jan 1943-Dec 1944)

OJECTIONI With Which is Combined Projection Engineering Technical Editor, C. F. Alexander Associate Editor, W. L. Lightfoot Volume 18 MAY 1943 Number 5 A Modern Inverse Feed-Back Amplifier 7 Leroy Chadbourne Television Seen as Post War Aid to Entertainment 9 Contestants Tackle Crackling and Popping Noises in Sound Systems 10 Underwriters Code as it Affects Projection Rooms, VII 12 National Theatre Supply Company Merges Bludworth 12 At Your Service 13 In The Spotlight Harry Sherman 14 Revised Projection Room Plans 16 A Report of the S.M.P.E. Projection Practice Committee Letters to the Editor 24 March Contest Winners 26 News Notes Technical Hints Miscellaneous Items Published Monthly by INTERNATIONAL PROJECTIONIST PUBLISHING CO., INC. 19 WEST 44th STREET, NEW YORK, N. Y. R. A. Entracht, Publisher Subscription Representatives Australia: McGills, 183 Elizabeth St., Melbourne New Zealand: Te Aro Book Depot, Ltd., 64 Courtenay Place, Wellington England and Dominions : Wm. Dawson & Sons, Ltd., Pilgrim St., London, E. C. 4. Yearly Subscription : United States and possessions, $2 (two years, $3) ; Canada and foreign countries, $2.50. Single copies, 25 cents. Changes of address should be submitted two weeks in advance of publication date to insure receipt of current issue. Entered as second-class matter February 8, 1932, at the Post 420 Office at New York, N. Y. under the act of March 3, 1879. Entire contents copyrighted 1943 by International Projectionist Pubhshing Co., Inc. International Projectionist is not responsible for personal opinions appearing in signed articles in its columns. Monthly Chat EQUIPMENT manufacturers are trying to maintain adequate stocks of parts for replacements. In normal times customers expect that immediate shipments may be made but it is not logical to expect them during the emergency for problems of maintaining stocks now are complex. Manufacturers have difficulties in obtaining raw materials. Raw materials, however, are alloted, and manufacturers may have to wait several months for supplies — and then allotments may be reduced. An individual manufacturer applies for materials based on his records of demands. And if the demand for some reason suddenly increases all orders cannot be filled. Which all means that we will have to prolong the life of existing equipment and not become overly impatient if we cannot buy supplies immediately. Some may feel that new parts do not appear exactly like those with which they have become accustomed. This may be so, as manufacturers have been forced to make material substitutions, on account of restrictions and shortages. This situation has forced manufacturers to investigate other materials. Sometimes these materials may be used with success while in other instances it is doubtful if substitutes will be as satisfactory. In some instances new materials will not perform as producers desire. No matter what the conditions, we are faced with substitute materials, and as the war continues there appears to be an ever-growing necessity for more. Do not pay too much attention to reports that new parts now coming through do not fit as well, are not finished as well, or show signs of poor workmanship. It is not generally true. Although it has been necessary to train new operatives in plants, the older, experienced employes are doing a marvelous job in preventing any real deterioration in the quality of the product. We must consider the many production problems now before the manufacturers. A timely and effective step forward has been taken in the advertising program by the International Projector Corporation with its introduction in trade publications of a new series of advertisements which are devoted to the advancement of intelligent and necessary maintenance of theatre properties and equipment. During these times maintenance is more important than ever before and the messages that will be publicized by the International Projector Corporation will be worth-while to all projectionists who have the good of the industry at heart. These are all practical messages, written and signed by practical men who know what they are talking about. MAY 1943