International projectionist (July-Dec 1934)

October 1934 INTERNATIONAL PROJECTIONIST 7f)feff)0////of)a// OJECTH With Which is Combined PROJECTION ENGINEERING Edited by James J. Finn Volume 7 OCTOBER 1934 Number 4 Index and Monthly Chat 3 Brushes: A Vital Link in M. G. Maintenance 5 M. L. Robinson Projections 6 Frank Dudiak The Industry Re-Discovers Mr. Fox and Tri-Ergon 7 James J. Finn RCA To Modify Equipments . . 8 Answers to Problems, Lesson X . 9 Gordon S. Mitchell Important Projection Topics on S.M.P.E. Convention Program 10 Characteristics and Uses of the Carbon Arc 11 W. C. Kalb Step-By-Step Analysis of Common Amplifier Types, V . . . 16 Aaron Nadell Craft vs. Industry Unions 19 Recent Technical Advances in Production 20 E. A. Wolcott Rosenblatt Defends NRA in A. F. of L. Speech 23 News Notes Technical Hints Miscellaneous Items Published Monthly by JAMES J. FINN PUBLISHING CORPORATION 580 FIFTH AVENUE, NEW YORK, N. Y. Circulation Manager, Ruth Entracht 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 1933 by James J. Finn Publishing Corp. International Projectionist is not responsible for personal opinions appearing in signed articles in its columns. MONTHLY CHAT ME. AYLESWORTH, head of • National Broadcasting Co., announces that television still is "five years off". This five-year term has been used steadily for the past five years. We often wonder why these prognosticators of things technical don't spill the real lowdown on television. What is it? Just this: television could be readied within a year; but the big dough boys, who let radio get away from them and slip into the non-paying entertainment class, don't intend to be caught napping with television. Just as soon as some means is devised for making the consumer, meaning the listener, pay for the service, then just so soon will television emerge from "the laboratory." TESTS of a new condenser reveal a 50% improvement over the best existing types. In bne with the usual poUcy of this business, everybody, including the manufacturer, is saying nothing about this development. You see, it's a secret. This shush-shushing should make for a fine promotion job. THE future of the new A. C. arc, concerning which much type has been used in these columns, is tied-in tightly with a good arc control. This has been our stand since this arc type was announced. Most lamps are alike; but putting over the A. C. arc depended entirely upon accurate arc control. Well, we finally have seen an arc control that we think will do the trick. More about this control shortly. NO industry is more indebted to and dependent upon technological progress than is that of motion pictures. And no other industry, as a whole, pays so little attention to technical matters. Thus, whatever the ultimate outcome of the current Tri-Ergon patent activity, the fuss at least will serve to focus industry-wide attention upon factors other than the boxoffice. We haven't noticed the citation of this particular slant anywhere else, but we'll stick to this view. INDICATIONS are multiplying that the industry trade papers, who beat the drums long and loudly over the possibilities of theatre modernization through federal loans, have grabbed another hot iron only to let go quickly. This story, mishandled from the start, sent hundreds of exhibitors and not a few manufacturers on a willy-ninny spasm of enthusiasm. The plain truth of the matter now and at the start of all this noise is that no part of any such loan can be used for any movable equipment — which takes in the projection room complete. The story, plus the endless pretty charts, didn't look badly in print, however.