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Aided by the very able Lamp Engineers — who have produced a wonderfully efficient type of incandescent lamp — the designers of portable projectors have been enabled to produce a machine which successfully handles film reels of one thousand foot length. A projector which delivers a satisfactory ten or twelve foot image, of standard i lumination, is extremely compact, easily transported and weighs twenty-five pounds or less.
Motion pictures whenever and wherever you want them are an accomplished fact. Wherever the ordinary illuminating voltage is obtainable— flickerless, brilliant motion pictures are possible.
The portable projector is the logical successor to the optical lantern. It does not enter into competition with its larger prototype — the professional projector; but in the home, in the class-room, in the church and in the equipment of many salesmen, it fills an individual need in a most gratifying manner.
However, in spite of its more than worthy performance and its own most creditable record — the portable projector finds itself in a class of ethical outlaws, due to the company it keeps. No projector, no matter how conscientiously constructed, can take the "flam" out of inflammable film. The professional projector accomplishes the operation by means of the fire-proof booth.
The portable projector becomes equally safe with the addition of the same booth — and accordingly loses its portability. No user could consistently arrive at the place of entertainment, carrying in one hand a truly portable projector, weighing about twenty-five pounds; but in the other hand, a fire-proof booth, weighing five hundred and fifty pounds.
Small wonder that a number of manufacturers, in their eagerness to meet the uncompromising public demand, are supplying portable projectors disguised as sample cases, lunch boxes and violin cases. What cannot be done with safety, according to official requirements, is always accomplished by stealth — with the same lack of safety.
Personally, I do not believe the portable projector to be unduly hazardous, when used in offices or factories — even though inflammable film is used. But, when such machines are used, employing inflammable film without booth, in schools and churches — where the apparatus is frequently stationed in the center of a crowded roomthen the risk is unwarrantable; unless the operator is skilled and coolheaded.
The amateur, with his indiscriminate use of the portable projector, is a menace to public safety and the good repute of the industry.
There is but one remedy for the present intolerable condition. So long as the market exists — portable projectors will be supplied. Since the uses for which portable projectors are intended, preclude the use of booths — they will be used without.
Since the film employed is the fundamental fault— corrective measures must be applied in that direction. Hence, the non-inflammable film.
This is not a new need; much has been said, but little has been done to alleviate conditions.
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