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126 CLASSIFIED INDEX Trends in 16-Mm Projection, with Special Reference to Sound, A. Shapiro, v. 26, no. 1 (Jan. 1936), p. 89. PROJECTORS 35-Mm Calculation of Accelerations in Cam-Operated Pull-Down Mechanisms, K. W. Kellogg, v. 45, no. 2 (Aug. 1945), p. 143. Sprocket Design Report, v. 45, no. 2 (Aug. 1945), p. 73. Displacement Meter for Testing Unsteadiness in Motion Picture Projectors, R. W. Jones, v. 44, no. 6 (June 1945), p. 456. Analysis of Geneva Mechanisms, W. A. Willis, v. 44, no. 4 (Apr. 1945), p. 275. New 35-Mm Projector with a New Light Source, T. Schaffers, v. 44, no. 3 (Mar. 1945), p. 203. Requirements of Modern Projector Design, R. H. Cricks, v. 43, no. 2 (Aug. 1944) ( p. 129. General Electric Television Film Projector, E. D. Cook, v. 41, no. 4 (Oct. 1943), p. 273. Recent Developments in Projection Mechanism Design, E. Boecking and L. W. Davee, v. 38, no. 3 (Mar. 1942), p. 262. Constant Torque Friction Clutch for Film Take-up, W. Hotine, v. 38, no. 3 (Mar. 1942), p. 256. Automatic Slide Projectors for the New York World's Fair, F. Tuttle, v. 34, no. 3 (Mar. 1940), p. 265. Development and Practical Application of the Triple-Head Background Pro- jector, B. Haskin, v. 34, no. 3 (Mar. 1940), p. 252. Paramount Triple-Head Transparency Process Projector, A. F. Edouart, v. 33, no. 2 (Aug. 1939), p. 171. New Projector Mechanism, H. Griffin, v. 32, no. 3 (Mar. 1939), p. 325. Non-Intermittent Projector for Television Film Transmission, H. S. Bamford, v. 31, no. 5 (Nov. 1938), p. 453. Basically New Framing Device for 35-Mm Projectors, H. A. DeVry, v. 31, no. 3 (Sept. 1938), p. 319. New Projector Mechanism, H. Griffin, v. 32, no. 3 (Mar. 1939), p. 325. Combined Viewing and Projection Machine with or without Sound, I. Serruricr, v. 29, no. 6 (Dec. 1937), p. 673. Super Simplex Pedestal, J. Frank, Jr., v. 29, no. 1 (July 1937), p. 94. Lumiere Cinematograph, L. Lumiere, v. 27, no. 6 (Dec. 1936), p. 640. Automatic Daylight Continuous 35-Mm Projection Machine, A. B. Scott, v. 26, no. 1 (Jan. 1936), p. 102. 16-Mm Report of Subcommittee D on 16-Mm Projection, A. G. Zimmerman, v. 43, no. 1 (July 1944), p. 23. Five New Models of 16-Mm Sound Kodascope, W. E. Merriman and H. C. Wellman, v. 37, no. 3 (Sept. 1941), p. 313. Non-Intermittent Motion Picture Projector, F. Ehrenhaft and F. G. Back, v. 34, no. 2 (Feb. 1940), p. 223.