International projectionist (Jan 1963-June 1965)

■khmmmbbmm ■; :tv5 New Strong Lamp said to be First To Fill Needs of All Indoor and Drive-ln Theatres CURTAIN CONTROLS, TRACKS and SPECIAL OPERATING DEVICES VALLEN, Inc. ■ )■ AKRON 4, OHIO Norelco projection equipment Available from leading theatre supply dealers North American Philips Co., Inc. Motion Picture Equipment Division 100 E. 42nd St., New York 17, N.Y. What is said to be a new concept in projection lighting equipment, the first projection lamp to adequately fill the 35mm and 70mm needs of all indoor theatres with screens up to 65 ft. and drive-ins with screens up to 120 ft. has been announced by the Strong Electric Corp. Known as the Futura, this crisply sleek equipment is not only beautiful in design but encompasses, Strong officials say, the most projection lighting developments ever assembled within one lamphouse. The optical system of this powerful direct current angle trim high intensity arc has been designed to match the requirements of all 35mm and 70mm projectors. A single knob moves the entire arc burning assembly in relation to the reflector focal point to make the change from 35 to 70mm or 70mm to 35mm projection. A calibrated scale with reference pointer permits precise reset of burner focus once the 35mm and 70mm positions are established. This simplicity is exclusive with Strong. The Futura comes in three ratings: Futura I for economy of operation with 11mm carbon trim burning at 75 to 105 amperes; the Futura II with automatic crater positioner for 13.6mm carbon trim burning at 120 to 160 amperes; and the Futura II with automatic crater positioner for 11mm carbon trim burning at 100 to 125 amperes. Highly efficient utilization of the standard economical 20-in. length carbon insures more light per carbon dollar, and permits projection of an extra reel of 35 or 70mm films per length of carbon. A big 18-in. diameter first surface Tuf-Cold reflector, developed by strong and bearing a two year sliding scale guarantee is provided for use with those lamps burning at 95 amperes and above. Low aperture temperature assures perfect projection without the film damage and buckling which results in in-and-out of focus. Silvered reflectors are provided with those lamps burning less than 95 amperes. The mirror is integral with the rear lamphouse door and swings completely out of the way to facilitate retrimming, cleaning of the lamphouse, and maintenance of the reflector. A constant curtain of forced cool air flows over both surfaces of the reflector. This results in a uniform temperature over the entire reflector surface. The self contained centrifugal blower ventilating system cools the carbon feed mechanism and lamp base. A jet of air is employed to stabilize the arc. For arc currents below 135 amperes a choice is offered of water cooled silver contacts or heavy duty long life air cooled positive carbon contacts. For currents above 135 amperes, water cooled contacts are provided. The Futura has a new type arc imager system, redesigned to eliminate parallax, and relocated for the full convenience of the projectionist. Other features include a streamlined ammeter for reading the current at the arc, an automatic trimming light and inside dowser system. Unit construction permits instant removal of the various components for cleaning and inspection. The Futura is of streamlined design with a silhouette which is 25% lower than other lamps of the same class, permitting ready installation in low-ceilinged projection rooms. The Futura I is without question the most economical projection arc lamp for providing powerful screen illumination with utmost reliability, the manufacturer states. The standard 11mm carbon is burned efficiently at 75 105 amperes for both 35 and 70mm projection, to result in the greatest amount of light ever delivered per carbon dollar. The Futura II is equipped with an automatic crater positioner which operates over the complete range of the lamp. Once the burner has been focused to the reflector a constant white screen light of stable intensity and color, evenly distributed over the entire screen area, is automatically maintained. Spot focusing never disturbs the equilibrium of the arc since the electrode spacing is not disturbed. The correct position of the positive crater is automatically controlled by a sensing element which governs the speeds of the separate positive and negative Bodine geared head motors, advancing the carbons as consumed to maintain a uniform gap length. A single manual adjustment controls both carbon feeds and readily allows the burning rate to be tailored to the length of the reels so as to permit most efficient use of carbons. The 12 International Projectionist September, 1963