International projectionist (Jan-Dec 1946)

PROJECT U«/»« PICTURES \d?leatet ) urtth sxaim j 1 1: Gone are blurred edges, dim images, muddy contrast with a SNAPLITE Series II lens in each projector. This superb lens affords image quality outstanding in definition, contrast, flatness of field and freedom from color fringes. It provides a speed of f/2.0 in focal lengths from 3 V2 " through 5" with mounts hermetically sealed against dust and oil for lasting, trouble-free performance. SNAPLITES in focal lengths above 5" are also stocked. Antiflection coatings are regularly supplied. A companion to the Series II is the SNAPLITE Series I. This efficient lens has been improved to give brighter illumination, sharper definition and higher contrast. It is stocked in focal lengths from 2" through T in Vi" steps, with speed of f/2.3inthe shorter focal lengths. m 1 Fnwiklln AvtniM IraoUim II. Nnr tort COKFttKATIMft •• €i itU>d . .. Repair Man, experienced in mechanism and movement work to take charge of shop in large eastern theatre supply house. Write giving full details of self and experience, Box 105, International Projectionist, 19 West 44 St., New York 18, N. Y. {Continued from preceding page) cause it still may pass no plate current due to being either a "leaker" or a "hard" tube. Always try a tube known to be good before looking elsewhere for trouble. E. The quantity of light emitted from a tube with its filament energized will vary in different tubes due to the differences of density of the scavenger metal deposited on the glass walls of the envelope. This should not be considered as due to a filament defect or insufficient voltage. F. To determine whether the argon tube is rectifying — that is, whether it is passing plate current — look into the bulb with the rectifier in full operation and observe whether or not there is an arc of blue light between the filament and anode. If the tube is passing plate current, there will be a bluish arc between anode and filament very easily distinguished from the white light of the filament. Another check-up is to remove the clip from the suspected tube while the rectifier is in full operation. If the tube is working, there will be a spark between the pinch clip and the anode terminal as they are contacted; if not working, there will be no spark. Alaska 16-mm Show Circuit Is Serviced by Plane Three ex-Gl's have shown exceptional enterprise in the formation of a 16-mm film circuit which utilizes plane service to cover 30 towns throughout the entire Alaska Territory. Four to six film programs a month are flown from Seattle to Anchorage, Alaska, and the ex-servicemen then utilize their own planes to transport equipment and film programs over their circuit of "theatres." The towns covered range in population from 30 to 600 and are located in isolated districts inaccessible by automobile or boat. Distances between towns range between 301 and 275 miles. Making the rounds every ten days or so, the boys give their show and simultaneously plug the next attraction. The venture has developed so successfully that the group is laying ambitious plans for expanding their area of coverage. Get your copy oi SERVICE MANUAL and learn what the service man does when the equipment fails to function properly. Compiled in handy book form and attractively presented. Complete WveUn Theatre JL WJ Equipment ! NATIONAL THEATRE SUPPLY brings you a complete line of motion picture equipment especially designed for DRIVE-IN THEATRE use. PROJECTION EQUIPMENT • SIMPLEX PROJECTORS • PEERLESS ARC LAMPS • HERTNER TRANSVERTERS SOUND EQUIPMENT • SIMPLEX SOUND SYSTEMS • INDIVIDUAL SPEAKER UNITS • HIGH-POWERED AMPLIFIERS Ask For DRIVE-IN THEATRE PLANNING BOOK— Ask your nearest National Theatre Supply branchlor a copy of our new Drive-In Theatre Planning book containing Construction notes — helpful hints— illustrations of essential equipment— and a complete check list of ell equipment and supplies necessary. Distributed Exclusively by /^ATIOMAL^ \ ■ &tw)«S»»«*Hrti-H** **«»**" *•*"*"♦***.*»*• jS 32 INTERNATIONAL PROJECTIONIST November 1946