Journal of the Society of Motion Picture Engineers (1930-1949)

Jan., 1931] ABSTRACTS 117 ABSTRACTS OF RECENT U. S. PATENTS 1,780,969. E. BRUNNER. A process and apparatus for producing artistic designs. This is a machine for producing kaleidoscopic images of one or more negatives. An optical system with lenses and reflectors is employed for producing a real image before a mirror system and then for projecting kaleidoscopic pictures from the mirror system to a screen. Mobile color effects of changing design may be thus produced. 1,788,139. R. JOHN. A positive motion picture film capable of use for enlarged projection may be made in accordance with this patent by producing images of coloring matter applied by transfer. An exposed master positive which has the character of absorbing an aqueous dye solution or retaining greasy ink corresponding to light and shadows is made photographically. This film is charged with color and the color is transferred to a support while retaining the proper relationship between film perforations and frame lines for the different picture areas of the film. The cost is said to be less than photographic copies when this process is employed. 1,775,610. A. WEISS. This patent relates to a film reel for motion pictures having an octagonal opening to engage a film supporting shaft. The shaft may extend through the reel up to one flange which is provided with a similar shaped opening of a different size. The object is to insure the proper positioning of the reel on the supporting shaft and the supporting shaft may be of various forms in cross-section such as round, square, triangular, or octagonal. 1,778,635. C. L. ADISLER. A simple type of support for projecting machines in which one pair of legs is movably mounted with respect to another pair of legs. The second mentioned legs carry a supporting casting having a bearing on which a top is pivotally carried. This top may be adjusted angularly about this pivot by means of a worm and worm wheel and the top is counter-balanced by a spring to insure ease and smoothness of movement. 1,783,045. KELLOGG. Contact film printer. This machine is designed for moving a plurality of films through a curved path past a printing light. The path may be curved more or less so that suitable adjustment may be made to care for any deviation in the length of a film from a standard, such deviations occurring from shrinkage, expansion, and sometimes from the age of a film. The adjustment for altering the curved film path may be automatically or manually controlled. 1,776,637. J. OSTERMEIER. A flashlight designed particularly for photographic purposes which will eliminate most of the noise and smoke usually accompanying a flash of the usual type. The lamp is similar in shape to an electric light bulb, but contains thin metallic foil, preferably aluminum, hi oxygen and an igniting wire. By making the circuit a flash is produced without smoke or dust and with only a very little noise. The combustion of the foil does not alter the pressure in the bulb sufficiently to break the glass. Only a low voltage is necessary to ignite the foil. A flashlight battery may be used for this purpose if desired. 1,780,945. A. SAGIER. This relates to a film frame for a motion picture projector in which a film guideway of two relatively movable plates is provided. The plates facing the objective may be moved by a handle near the objective