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30
INTERNATIONAL PROJECTIONIST
December 1936
Projection Room Fire Precautions
It has been well said that people need not so much to be told as to be reminded. The recent series of projection room fires, with their accompanying toll in human lives and great property damage, calls for a restatement of those fundamental precautions against fire, known to all projectionists but so easily forgotten.
All safety features of the projector must receive frequent and thorough inspection to determine their ability to function as intended.
Automatic fire-shutter tracks must be kept clean.
Correct tensions must be maintained on the upper reel spindle, film tension shoes, intermittent sprocket pad, and take-up spindle.
Correct clearances must be maintained
on all pad (idler) rollers, film gate apron and fire-valve rollers.
All film strippers must be set up tightly in proper adjustment.
Pad rollers, lateral guide rollers and fire-valve rollers must be properly lubricated and adjusted to permit of their being kept in motion by the film in transit through the projector thus preventing the film from wearing flat sides or cutting grooves in the rollers. Grooved
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lateral guide rollers, flat sided fire-valve rollers, flat-sided pad rollers and undercut sprockets must be re-placed.
Mechanism and magazine doors must be kept closed during projection and must also be provided with latches, properly adjusted, to prevent accidental opening.
Each projector should be equipped with an aperture heat-shield, an eyeshield which encloses the light beam, a rear shutter and a dowser between the light source and the aperture. (Compared with the front shutter type, there is a reduction in heat at the aperture of at least 50% when rear shutter is used) .
Lamp-houses must be equipped with a fine screen in bottom to prevent hot carbon chips from falling out, or anywhere where there is a chance to drop out.
Be certain fire-shutter is closed before adjusting light beam on aperture.
A frequent and periodic check-up on the operation of the port shutters must be made.
Large shutters should be counterweighted. All shutters should have rubber bumpers installed in sill so, in the event of fire, there will be no noise to alarm the audience. All shutters shall have individual fusible links. All shutters shall be connected to a master release cord which shall contain a fusible link located directly over each item of projection equipment. Means for manually operating shutter release cord shall be provided at the projectors and also near the projection room exists.
Ports for spot-lights, stereopticon and effect-projectors shall be kept closed except when in actual use. Projection room exit doors must be kept closed while audience is in the theatre.
(To Be Continued)
Remember —
ONLY High-Intensity Arcs Can Give
HIGH-INTENSITY PROJECTION
This trade mark on a projection lamp is your guarantee of correct design, fine
workmanship, and long experience. H. & C. is the projection I*° lamp with accurate arc regulation.
HALL 6 CONNOLLY
24 Vandam Street
New York, N. Y.
H. C. 10 Super Intensity Lamp