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186 RICHARDSON'S BLUEBOOK OF PROJECTION
upon the rewinder should be kept stored away in film cabinets in the order in which the reels are to be used. Local ordinances everywhere demand that the film be stored when not in use and it is also a strict Fire Underwriters' requirement.
How to Rewind Correctly
(49) It requires approximately eleven minutes to project 1,000 feet of film and twenty-two minutes to project a 2,000-foot reel. Film can be safely rewound at about twice its projection speed — but no faster. Projectionists have become accustomed to rewind film at high speed and the habit is hard to break. Generally speaking, 1,000 feet of film should not be rewound in less than six minutes.
(50) At that speed the rewinding instrument will operate safely without supervision. The rewinder is an important instrument. (51) It should be located in the projection room proper and as near as possible to the film storage cabinet. (52) All so-called safety laws to the contrary, there is no added protection gained by placing the rewinder in a separate compartment. As a matter of fact, the result is sometimes precisely the opposite, particularly in theatres with but one man in the projection room.
By means of properly fused port fire shutters all communication between the projection room and the theatre auditorium, in the event of fire, can be shut off tightly and automatically in a few seconds. If proper arrangements have been made to exhaust smoke and gas as soon as it forms it is likely the audience will be totally unaware of trouble except for the dark screen. But if the rewinder is located in a separate room the chances of fire are greater because the projectionist will often be out of sight of the projectors, despite regulations to the contrary, rewinding his film.
Even where there are two men in the projection room, both may be out of sight of the projectors, examining film on the rewinder. The same procedure, when the rewinder is in the projection room, makes for real safety