Motion picture projection; an elementary text-book (1921)

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MOTION PICTURE PROJECTION 89 THE PROJECTION ROOM The room should contain everything necessary for perfect projection, but nothing that can be done without. Nothing but the projection of films should be done in the room, an ante-room should be provided with work bench and rewinder. The room should be large enough to permit the free movements of the operator or operators and should contain the necessary closets and shelves for the operators' clothes, tools, supplies, etc. The operator should see that he has sufficient supplies, such as fuses, lugs, film cement, asbestos cable, condensers, various lubricants, carbons, mica, brushes for motor, belting and a few of the necessary parts for machine to replace those parts that are liable to need replacing owing to wear, etc. The operator should carry a kit of tools that will permit him to do any repair work that he may be called upon to do, the manager of today has very little use for the would-be operator who shows up on the job with a ten cent pair of pliers and a piece of string. If using rheostats then same should be installed outside the projection room, but the control handles should be placed so that they are within easy reach of the projectionist, without his having to leave the machine. The operator will thus find working conditions a whole lot more comfortable. All openings such as projection holes and port holes must be so equipped with shutters that they will all close automatically in case of fire.