We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
(8 watts for average practical purposes.
The amplifier also includes a separate 5-watt amplifier circuit with separate volume control for high quality monitoring, "cryroom" reproduction, a manager's office, or hearing aid equipment. It is electrically isolated from the main amplifier to obviate interference from the regular speakers. Power supply of the main amplifier is separately filtered and voltage-controlled.
The new Century Systems may have either a.c. or d.c. exciter lamp power supply. Emergency operation may be selected with either a.c. or d.c. power.
Facilities for providing emergency switching of amplifiers, and other special arrangements, is accomplished with specially designed switching panels.
All units are designed for standard relay rack type of mounting. However, on small reproducing systems a wall-mounted cabinet with a convenient hinged rack provides ease of service and installation. For larger systems with power amplifiers, either open or closed relay racks are available.
The manufacturer recommends the use of Altec-Lansing's "Voice of the Theatre" speaker systems with the new Century equipment.
Sprocket to Prevent Fire by Dowsing Light
A projector safety device, with a mechanism for actuating the changeover dowser contained within a special sprocket, has been announced by the Cont r o 1 Engineering Corporation, San Francisco. The device is the invention of Lloyd Mannon, a member of IA Local 162 and head of the company.
Proceeding o n the basis that, as
his announceLLOYD MANNON ment states> «the
only effective means of preventing a film fire is automatic, instantaneous control of the projection light and the accompanying heat," Mr. Mannon has developed a mechanism sensitive to speed which is contained entirely within a sprocket variously adapted to insertion in different makes of 35-mm. projectors. The adaptation and the function are thus explained by Mr. Mannon :
"The automatic safety sprocket is a very accurate speed sensitive mechanism which needs neither adjustment nor maintenance. It is very simple to install as it comes on an adaptor bracket made for each model of projector. To install on a Super Simplex, simply remove the three screws holding the lower back plate, remove the plate and replace with the adaptor bracket.
Mounted thus in the projector, the speed
2. THERMOSTATIC CONTROL 3. REMOVABLE POPPING ELEMENTS 4. CONCEALED MECHANISM 5. FILTERED EXHAUST SYSTEM 6. DOUBLE HEATING 7. GREATER STORAGE SPACE 8. FRONT OR REAR OPERATION 9. SPEEDIER PRODUCTION 10. GUARANTEED FRESHNESS
i — ~
| C. CRETORS & CO., 56 East 13th Street, Chicago 5, Illinois
BETTER THEATRES, APRIL 5, 1947