International projectionist (Jan 1963-June 1965)

INTERNATIONAL PROJ ECTIONIST Volume 39 June 1964 No. 6 FRANK W. COOLEY, JR. Editor and Publisher RAY GALLO Executive Publisher AL BLOOM Managing Editor TOM KENNEDY Equipment Editor RAY GALLO ASSOCIATES National Advertising Representatives 545 Fifth Avenue, New York 17, N. Y. Telephone Murrayhill 7-7746 (Area Code 212) IN THIS ISSUE Proper Projection 3 New Construction Methods Cut Expense 4 Lenox Square Theatre 6 Sound Track By J. G. Jackson 8 Hollywood at the N. Y. Fair 9 Characteristics of Film 12 News Notes — Technical Hints — Miscellaneous Notes INTERNATIONAL PROJECTIONIST, published monthly by the International Projectionist Publishing Co. division of The Northern Publishing Co., Post Office Box 6174, Minneapo'is 24, Minnesota. Editorial offices, 1645 Hennepin Avenue, Minneapolis 3, Minn. Subscription Representatives: AUSTRALIA — McGills, 183 Elizabeth St., Melbourne; NEW ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington; ENGLAND and ELSEWHERE — Wm. Dawson & Sons, Ltd., Macklin St., London, W. C. 2. Subscription Rates: United Stores, Canada, and U. S. Possessions, $3.00 per year (12 issues) and $5.00 for two years (24 issues). Foreign countries: $4.00 per year and $7.00 for two years. Changes of address should be submitted four weeks in advance of publication date to insure receipt of current issue. Second-class postage paid at Minneapolis, Minn. INTERNATIONAL PROJECTIONIST assumes no responsibility for personal opinions appeoring in signed articles, or for unsolicited articles. Entire contents copyrighted 1964 by INTERNATIONAL PROJECTIONIST PUBLISHING CO. <^^SSfe> PROPER PROJECTION To insure proper lamp operation, and to prolong the life of the lamp, these procedures should be strictly followed : Optical surfaces should he kept scrupulously clean. A regular program for cleaning them each morning before the days operation begins is an important part of projection room routine. Only lens tissue should he used for cleaning optical surfaces. \ full supply of this material ought to be on hand. If the supply is unavoidably exhausted, silk or soft flannel materials may be used, never cotton. If the dr\ lens tissue does not effect complete removal of stubborn dirt, it may be moistened slightly with carbon tel rachloride. The floor of the lamphouse should be kept clean, carbon dust and copper particles swept out regularly. Feed relay contact points should be checked regularly, and cleaned with fine sandpaper if sparking appears. Continued arcing across the relay points indie ates that the introduced into the sound. This ing them has calls for clean d el crio rated. ing the relay and should be replaced. If relay contact action is faultx. noise ma\ he points, readjusting their tension, and, in extreme cases, for installation of filter condensers, connected cither acress the points "i from each point to ground. Commutator action of the arc feed motor may also create noise in the sound if the commutator is dirty or in poor condition, or if the brush tension is incorrect. In such cases the commutator should he cleaned, sanded or repaired; or the brushes should be adjusted or replaced. It max also be necessary to connect filter condensers across the brushes, or from each brush to g] mind. Ml inoxing parts schould be kept carefully lubricated at all times, in accordance with the manufacturer's instructions. Optical adjustments should be checked frequently. \n\ improper adjustment will show up immediately in reduced or incorrect screen illumination. Onl\ the correct size carbons should be used, and each carbon should be carefully inspected before it is inserted in the lamp. Carbons must be kept in a dry place. Maintaining a stead) arc at all times is one of the most important responsibilities of the projectionist. Film Maintenance Things to watch: Improper packing and rough handling in shipment. Excessive tension at the projector aperture, and incorrect take-up action. Improperly adjusted sprocket idlers, loose splices and poorly made splices, which allow the film to run off the sprocket, thus embossing sprocket teeth impressions on it or actually^ tearing it. Rewinding should be done at the rate of 1,000 feet in six minutes — no faster. Reels should not be overloaded with excessive footage. Proper tension must be maintained on the upper reel. Film should be stored only in a clean, humid atmosphere. Undercut or worn sprocket teeth. iP International Projectionist June, 1964