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236 PROGRESS REPORT [j. s. M. P. E.
Titles. — No outstanding articles on titling have appeared but two patents are of interest. The first comprises a device for forming a title on greased paper and exposing the film through the paper.115 The second describes a projection printer having a rotating table for holding the titles interposed between the light source and the film.116
After-Treatment, Cleaning, Reclaiming, and Storage. — Jasienski117 has studied the effect of various intensifies on the graininess of the image and found that chlorochromic acid and a commercial product called Nosublim gave least increase in graininess.
A finishing laboratory has developed a process for increasing the life of positive prints.118 It consists in treating the emulsion side with a chemical compound immediately after processing which protects the film from scratches, oil, and dust. A cleaning device marketed under the trade name, "Imp-Impregnator" cleans, "impregnates," and dries the film at the rate of 6000 feet an hour.119
A novel device announced recently is a film inspection machine which is constructed without sprockets and, as the film is rewound, the machine detects any breaks, tears, or defective splices.120 A film clip which can be slipped on a roll of film without scratching it has been invented to replace the commonly used rubber band.121
A few patents have appeared on processes of lubricating and conditioning motion picture film.122
II. DISTRIBUTION
The introduction of sound pictures particularly those having the sound on disks has increased the problem of the distributors. The sensitiveness of the sound records and the extraneous noise resulting from careless handling make the problem of inspection in film exchanges more difficult. Footage numbers have been found of great value in connection with the inspection of sound film.123
III. EXHIBITION
A. General Projection Equipment.
Projectors and Projection. — Comparatively few changes have been noted recently in projectors equipped for ordinary motion pictures but many improvements have appeared in connection with projectors for sound films and the newer wide films.
A projector of Italian manufacture has, as a novel feature, an automatically adjusted shutter which permits as few as 14 pictures