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ONLY ONE
PROJECTION
LAMP
of many models
and types is ideal for you
Strong manufactures the only complete line '. . . lamps with many exclur sive features. We will, without obligation to buy, demonstrate in your theatre the ones best for YOU.
Strong's Exclusive Lightronic System automatically maintains the correct arc gap length and the position of the positive crater at the EXACT focal point of the reflector. Evenly distributed screen light of constant intensity, and unchanging color is maintained without manual adjustments.
THE JETARC^ Most Powerful Projection Arc lamps Ever!
Proved throughout America against all makes of lamps. Employs a totally different system — a three dimensional, cylindrically shaped light source. Delivers up to 65,000 lumens with wide apertures — double the light of any I6V2" reflector lamp and 51% more light than any lamp using an f 1.7/f 1.8 lens.
Projects all film widths by any process without changing the mirror. 21-inch cold type reflector — the largest ever employed — is an integral part of the rear door. Aperture spot size is changed by a convenient control of the position of the main reflector. The burner position need never be changed.
A 10 mm x 25" non-rotating Ultrex positive and rotating 7/16" x 12" solid Graphite negative burn at 140 to 160 amperes and 70 to 78 volts. A 10 mm x 25" Hitex positive may be burned at 125 to 140 amperes.
Brings indoor theatre quality projection to the largest drive-in screens.
SUPER "135"
U-H-l
Exclusive Beam Shaper Lens on 13.6 mm Trim Lamp Patterns the Normally Round Spot to the Size and Shape of the Aperture so as to Efficiently Utilize all Useful Light.
Burning a 13.6 mm carbon trim, the optical speed is equivalent to f 1.5 with f 1.5/1.6 lenses and projectors cleared for f 1.5. Light loss due to shadowing by feed mechanism is minimized. Exclusive built-in exhaust system permits use of the "cold" reflectors. 50% of the heat energy passes through the mirror instead of being reflected to the aperture. Separate Bodine gear head motors with self-enclosed gear reduction for each carbon drive. Another exclusive.
Write for literature —
THE STRONG ELECTRIC CORPORATION
Burns a choice of four carbon trims, 10 mm Hitex carbons at 135 amperes, 9, 10 or 11 mm regular carbons at 120 amperes. 18" f 1.7 or 16" f 7.9 reflector.
The Super "135" and U-H-l accommodate a 20-inch carbon trim. Five exclusive features: (1) Arc stabilization by its own magnetic field (no magnets required) and air jet which also prevents deposit of soot on the air-cooled mirror. (2) Mirror is integrated with rear lamphouse door which swings completely out of the way to facilitate retrimming and permit easy cleaning of the reflector and lamphouse. (3) The entire burner assembly can be shifted for easy spot focusing without disturbing the relative carbon positions or arc equilibrium. (4) Single control eliminates guesswork in matching the speeds of the two carbon feeds. (5) Unitized component design permits quick attainment of correct light for any projection technique. Single control amperage selection.
31 CITY PARK AVENUE • TOLEDO 1, OHIO
4
INTERNATIONAL PROJECTIONIST
JANUARY 1959