International projectionist (Jan 1943-Dec 1944)

fn/ewof/onof ROJECTK With Which is Combined Projection Engineering Technical Editor, C. F. Alexander Volume 18 MARCH 1943 Number 3 Index and Monthly Chat ... 5 A Power Unit With Automatic Current Control 7 Leroy Chadbourne Local No. 302, Calgary, Alta., Canada, Aids in Training Ex-Service Men 9 Discuss Theatre War Hazards at S.M.P.E. Meeting 10 At Your Service 11 In the Spotlight 12 Harry Sherman That LP. Contest Question on Two-Way Dividing Networks 14 Sound and Projection Equip-' ment in War Department Theatres, II 16 George L. Bub Gases from Carbon Arcs 18 G. I. Sherman Underwriters Code as it Affects Projection Rooms 19 Wheel Distortion in Movies Cured 21 Prize Winners 22 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 Office at New York, N. Y. under the act of March 3, 1879. Entire contents copyrighted 1943 by International Projectionist Publishing Co., Inc. International Projectionist is not responsible for personal opinions appearing in sif articles in its columns. igned ,420 Monthly Chat ITAS everyone read the paragraph in * February's "In the Spotlight" pertaining to film damage? We believe it is so important that we want to refer to it again. Film must be conserved if theatres are to continue in operation, and constant examination of film is a "must" factor today. The film path in a projector is a long one and there are many spots where films may be damaged if the parts are not well maintained. Projectionists must examine all sprockets, rollers, gates and other parts in contact with films at stated and frequent intervals. Make sure that all parts . are adjusted properly and that rotating devices are lubricated as specified in manufacturers' instructions. There are many ways in which equipment may be kept in perfect condition during the emergency and it seems to us that it is up to projectionists to study their equipment and utilize every measure that will lengthen its life. We are nearing the end for the time being, for this month's question in the "Contest in War-Time Projection" will be the final one in this particular series, so if you want to show your skill and win war stamps and other prizes you'll have to get on the job right away. Well, within a few days at least. The answers present an interesting and comprehensive coverage of various types of difficulties that may be encountered in the projection room, and furnish practical hints to all in the industry. So many of the contestants have consistently given such detailed and accurate answers that the award of the Grand Prize will require an extremely careful analysis of the many letters that have been received. And now for some news: Another contest, new and interesting, will be announced within a short time. It will call for a test of skill and wits, just as does the expiring contest, but will be different, with a big, big "D," as Gilbert & Sullivan told us. There is a very much broader field of activity for the projectionist just over the horizon. His services will be in much greater demand not only for entertainment of the general public, but in other unrelated fields. His responsibilities may be expected to increase. The equipment may be of a more precise nature requiring more exact adjustment and operation. There may be more "gadgets" associated with the equipment, each one playing an important part in the overall performance of the system. There have been great strides in the electronic field. New vacuum tubes with entirely new applications are constantly being introduced. At present their application is confined strictly to the War effort, but when it is over they will find their place in the commercial field. MARCH 1943