Projection engineering (Jan-Dec 1931)

Page 30 PROJECTION ENGINEERING New Developments and News of the Industry HIGH INTENSITY LAMPS The U. S. Navy has placed orders for a number of Strong high intensity reflector arc lamps to be delivered to the Naval Academy at Annapolis and also to the Canal Zone, according to an announcement by the manufacturers, The Strong Electric Corporation of Toledo, Ohio. Fort Benning, Ga., and West Point are points of delivery for Strong Hy-Lows, the U. S. Army placing the order. Other recent shipments included low intensity lamps for installation aboard the new Canadian Pacific Steamship Liners, Empress of Japan, and Empress of Britain, point of delivery being Glasgow, Scotland. A LYRIC, NEW YORK, HAS NEW INSTALLATION RCA-Photophone engineers are installing one of the new all a-c. operated standard size sound reproducing units in the Lyric Theatre on West Forty-second Street, New York. As soon as the installation has been completed, the house will be re-opened as a combination vaudeville and sound picture theatre. HARRY W. ACTON FORMS NEW COMPANY An announcement of importance to the trade is made by Harry W. Acton, for many years general manager of the Brilliantone Steel Needle Company, selling agency of the W. H. Bagshaw Company. Mr. Acton has formed a new manufacturing company, which will be known as The H. W. Acton Co., Inc., with offices at 370 Seventh Avenue, New York City, and manufacturing plant at Providence, R. I. The new company will, it is understood, continue to act as the sole agent of Bagshaw for the well-known Brilliantone needles, and Mr. Acton, in a personal interview, expressed his desire that the entire trade be informed of this continued relationship. "The same faithful service which I have given those fellows in the years they have known me with Brilliantone, can still be expected of the new company," explained Mr. Acton. "While we intend to manufacture the general and special requirements of the trade under different brand names, the old relationship with buyers whose demand for Brilliantone products is established, will in no way be weakened or harmed." ▲ NEW HIGH INTENSITY LAMP Hall & Connolly, Inc., have developed a new and radically different high-intensity projection lamp for amperages from 75 to 200 amperes. There are a number of new principles that will appreciably improve projection and facilitate operation. Regular announcement will be made and complete description furnished within a few weeks. SMALL SIZE, HIGH STARTING TOROUE, AMPLE POWER COMBINED IN NEW A-C. MOTOR A new fractional-horsepower electric motor, no larger than the palm of one's hand, and with unusually high power output for its size, is now available for commercial use, according to an announcement recently made by Barber-Colman Company of Rockford, Illinois. The motor is furnished for either unidirectional or electrically reversible rotation, and is made for any voltage between 10 and 230, and for alternating-current frequencies from 25 to 60 cycles. Special two-speed models of the motor can be furnished. The motor is ruggedly constructed of steel laminations, brass bearing plates with oilless bearings, and a squirrelcage rotor 15: ' ; upon a hardened shaft. All coils are wound on phenolic resin spools and impregnated to exclude moisture and insure good insulation. Characteristics and advantages of the Barcol motor include small size with relatively high power output, quiet operation, and absence of interference to radio reception. The motors are used in modern electric fans, heat regulators, moving picture projectors, unit heaters, and numerous other applications where high starting torque and small size are an ideal combination. NEW AUXILIARY LENS SYSTEM The screen effects obtainable with the present-day 16mm. camera and projector possess, unfortunately, certain inherent limitations. The full beauty of an extended view or landscape, the concerted action in such sport events as racing, yachting regattas and athletic games — the vivid, pulsating life of street crowds or beach loiterers cannot be successfully presented on the screen with the standard 16mm. equipment. Even the 15 mm. wide angle lens contracting as it does the horizontal as well as the vertical field of view, will only focus the far flung beauties of a panoramic scene into a narrow, cramped range, often adding undesirable foreground and sky line to the picture. To overcome these disabilities which were, until now, considered inherent in the presentation of motion pictures, Dr. Sidney Newcomer, a well-known physicist and mathematician, of New York, has evolved from an entirely new optical principle, the Staats-Newcomer-Goerz Cine-Panor. This auxiliary lens system, consisting of a combination of cylindrical lenses, does not produce an image by itself, but has to be used in front of the regular photographic objective and the projection lens. It increases the horizontal field obtainable with cine lenses by 50 per cent without affecting the vertical dimensions of the picture. It is convertible from camera to projector. Films made with the CinePanor are projected through the same lens. It is manufactured by the C. P. Goerz American Optical Company, 317 E. 34th St., New York City. With the Cine-Panor, the motion picture photographer is enabled to produce with his 16mm. camera and projector an artistic and truly panoramic screen picture. NEW RECORDING SYSTEM The Electrotone Corporation, Gratiot Avenue at Racine Street, Detroit, Mich., announces a new recording system with a separate and distinct unit with no mechanical connection to the camera. The motor drive of the Electrotone recorder is entirely independent. As the speed of the camera is controlled and kept in synchronization by the recording unit, operating through the Eletrotone synchronizer, the recorder may be placed any reasonable distance from the camera and microphone. Electric wiring is the only connection between these units. The compartments in the sound recorder house the complete optical system which includes the special electric lamp for the light, lenses and masks, the vibrating head controlling the reflector mirror, and the film housing with its mechanism. Friction and vibration are practically eliminated. Any number of cameras may be used simultaneously. A constant source of light is used. Sound is recorded independently. The variable area type of recording is employed. Each revolving shaft is mounted on ball bearings. Base and housings are of aluminum. The drive sprocket is accurately machined and harmonically balanced and spring filtered through a flywheel. BEST DEVICES A complete line of film rewind pulleys ; spot lights and carbon savers are manufactured by the Best Devices Co. of Cleveland, Ohio. This company reports a growing business in this line of products.