American cinematographer (Jan-Dec 1931)

June, 193 AMERICAN CINEMATOCRAPHER Forty-seven Victor Speed Indicator SPEED determination and control is an absolutely essential factor in talking motion picture reproduction. Incorrect or inconstant speed would naturally prove fatal to good reproduction. On the Animatophone 16 m/m Talking Projector, manufactured by Victor Animatograph Corporation, Davenport, Iowa, a very clever method is employed for determining the proper operating speed for either 33 1 /3 or 78 R. P. M. Records. A small prism is located at the left of the Animatophone speed lever. When the projector is operating at the exact speed for which the speed lever is set, the governor blade falls into a position that permits only a narrow pulsating slit of light to penetrate the prism. At any other than the correct speed, the position of the governor blade either permits light to fall over the entire surface of the prism or closes entirely. This speed adjustment need, of course, be made only when the Animatophone is first set up for operation. The operating speeds of the Animatophone are automatically controlled. A film speed of 24 pictures per second is required for 33 1/3 R. P. M. Records 20.8 pictures for 78 R. P. M. Records; and 16 pictures for silent films. By means of the Animatophone Speed Lever the mechanism may be adjusted for each of these essential speeds. An entirely new idea in the way of speed governors is employed. This is a simple electro-pneumatic device consisting of a metal blade or vane, against which air is forced from the cooling fan. Any variation in the air pressure causes the blade to function in such a manner as to make or break the electrical contact. This provides perfect uniformity of speed, regardless of fluctuations in the line current. These unique features of the Animatophone make speed determination and control simple matters for the amateur operator, and eliminate the necessity of attempting to determine the correct speed by ear. Photoflash Holder NATIONAL CARBON COMPANY has just announced a Photoflash lamp holder as an addition to its popular line of Eveready products. The tube and fittings are of heavy gauge nickel plated brass, and is designed to operate on two Eveready No. 950 unit cells. The bottom cap has a convenient ring hanger. It is equipped with a substantial nickel plated lamp socket, mounted at right angles, and has a spring loaded push button in convenient operating position. The large aluminum reflector is nickel plated outside and matte finished inside. It is scientifically designed for maximum diffusion of light, and will hold one, two or three Photoflash bulbs. Both the inside and the outside of the reflector are lacquered to protect the finish. Glenn R. Kershner a. s. c. First Cinematographer c/o A. S. C. GR. 4274 Classified Advertising Rates: Four cents a word. Minimum charge, one dollar per insertion. WANTED — MOTION PICTURE CAMERAS WANTED — For cash, DeBrie, Pathe, Bell & Howell Standard cameras. Send full description. Bass Camera Company, 179 West Madison Street, Chicago. FOR SALE — CAMERAS FOR SALE — 35 mm. DeVry Automatic Portable with F.1.9; 50 mm. Ultrastigmat, carrying case, extra telescope sight, three tanks, one developing reel for 100 feet; Stineman printer; 200 foot drying rack, American Projectoscope (portable projector) 1000 feet capacity. All in good condition. Worth new about $600.00. Y. T. Suzuki, 21 N. Jefferson Ave., Battle Creek, Mich. FOR SALE — Akeley Camera No. 230, Tripod with Mitchell legs, baby tripod, high hat, adjustable shutter, 6 magazines; 2-2 in. F 2.7, 4 in. F 2.3, 6 in. F 2.7, 12 in. F 5.6 lenses with finder lenses. Motor attachment, carrying cases, first class condition. J. P. Muller, 2629 Calhoun St., New Orleans, La. FOR SALE — 2 complete Mitchell High Speed Outfits, $3500.00 each. Special price for purchaser of both. Write or phone Editor of CINEMATOCRAPHER. FOR SALE OR RENT — First Class Akeley Outfit complete. Phone CR-4274, or write Dan B. Clark, A. S. C. office. FOR SALE OR RENT — Complete Mitchell Camera, latest equipment. Reasonable. Harry Perry. Phone OX. 1908 or CR. 4274. FOR SALE — Mitchell Speed Camera. Don B. Keyes. Phone HE. 1841. FOR SALE — MISCELLANEOUS FOR SALE OR RENT— Mitchell camera equipped for Sound. Al Cilks. HE1490 or A. S. C. Office CR-4274. FOR RENT— CAMERAS FOR RENT — Mitchell camera fully equipped for sound. Harry Perry, Phone OX1908. FOR RENT — Eight Bell & Howell cameras, fast lenses, large finders, Mitchell tripods. Park J. Ries, 1540 N. Cahuenga Ave. CR-1185. FOR RENT — Mitchell Speed Camera, equipped for Sound. Phone Don B. Keyes, HE1841. FOR RENT — Mitchell high speed camera with latest 40, 50 and 75 mm. Pan-Astro lenses. 1000 ft. magazines; loose head, tripod. Pliny Home, 1318 N. Stanley. HO-7682 or HO-9431. FOR RENT — One Mitchell Speed camera fully equipped for sound. 40, 50 and 75 mm. and 4 and 6 inch Pan Astro lens. Norman DeVol, 6507 Drexel Ave. ORegon 7492. FOR SALE — Mitchell and Bell & Howell, Akeley Cameras. Lenses, accessories of all kinds, new and usec^— Bargains. Hollywood Camera Exchange. 1511 Cahuenga Blvd. FOR RENT— MISCELLANEOUS FOR RENT — Mitchell Motor. Also Mitchell Motor adapter. Mitchell and Bell & Howell Cinemotors with counter and batteries. Park ). Ries, 1540 N. Cahuenga. CR-1185. FOR RENT — Mitchell Gear Box with crank and shaft. Mitchell Motor; 1000 ft. magazines. Phone Donald B. Keyes. HE1841. FOR RENT — Mitchell high speed gear box complete. 1318 N. Stanley. HO-7682 or HO-9431. Pliny Home, The TRAIL AHEAD ! Don't M American than ever1 ss the July issue Cinematographer ! More Big Features! you of the Better Be sure Get Your Co py *