International projectionist (Oct 1931-Sept 1933)

26 INTERNATIONAL PROJECTIONIST July-August 1933 Sonolux Leads in America and throughout the world MELLAPHONE CORPORATION MANUFACTURE3S OF P^ Talking Picture Equipment CABLE ADDRESS ^^^m MELLAPHONE ROCHESTER. NEW YORK May 4, 1933. The Sonolux Company, East Newark, II. J. Gentlemen: We have your letter of May 3nd regarding the exciter lamp which we returned as defective. In the future you may supply all our lamps with the pins removed, and that will eliminate the necessity of our filing them. Of all the Sonolux lamps that we have used, the defective ones can be counted on the fingers of the left hand, and it was so unusual for us to find one that was not perfect that we took the liberty of returning it for replacement. Yours very truly, MELLAPHONE CORPORATION c- CF/TA INSTALLATIONS IN FORTY ■ EIGHT STATES AND TWENTY ■ SIX FOREIGN COUNTRIES Otie of the many unsolicited testimonials that testify to the high quality of SONOLUX products The world-wide endorsement of SONOLUX Exciter Lamps is indicated by the appended list of countries in which Sonolux is widely and regularly distributed: Norway Argentine Portugal Sweden Brazil Belgium Denmark Hawaii Canada France Colombia Spain Switzerland Mexico China Philippines Japan Cuba Italy India Canal Zone Australia United States SWITCH TO SONOLUX— It's Guaranteed THE SONOLUX CO. 3 Central Avenue East Newark, N. J. Cable Address: Sonolux, Newark, N. J. indicator, which is an integral part of the device itself, as, for example, a voltmeter or an ammeter or some mechanical indicator which shows the instantaneous condition. The second method is by means of a separate adjunct that can be brought by a service man to the location of the device. The difficulty is that we face a condition where something over 10,000 theaters in the United States have actual projection equipment in their projection room and, economic conditions being what they are, it will be some time before most of these projectors are replaced. When they are replaced, certainly the projector manufacturers would be well advised to consider the inclusion of self-contained indicators wherever practicable. Certainly the rod-type centering mechanism, that has been described could hardly be included in the projector, because it would occupy space to the exclusion of the carbons, the film, and the lens. It is, therefore, a device that apparently could not be permanently in place. But certain other things might well be included in the projector, such as mechanical gauges or sighting devices. Even if nothing else is accomplished by these suggestions except that we direct the attention of the projector manufacturers to these points, the discussion will have been of value. Pacing the conditions that it did, the best that the Projection Practice Committee could do was to devise external and separate indicators and devices that could be carried into the projection room and used for tests, leaving until some later date recommendations for the production of new projectors that would enable these tests to be carried out without any further test equipment. Mr. Golden: With regard to the alignment tool, I believe that it should be known that the entire Loew's circuit is now using such tools, which have been found to be very effective and helpful in aligning equipment. As to the possible chances of getting the projectionist to use the tool, after all, the projectionist of today can not be compared with the projectionist of the early days. With the advent of sound, he was forced to use tools that he had never dreamed of. So, therefore, since he has been able to master and handle sound, why can't he, if shown that this tool is practicable, be able to help put on a better show. The projectionist, once shown that the tool will help him in his work, will use it. Mr. Bliven: The entire procedure seems to me to represent good practice in projection work; but the only objection that I have to make is the possibility of fatiguing the eye in checking the definitions. Why not use a very light straw color instead of the pure whites? Dr. Goldsmith: It was suggested that a gray glass be slipped before the