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August 21, 1943
BETTER THEATRES
65
■^^■E^BiH^r~ —
CARBONS
RECOMMENDED TRIM AND RANGE OF ARC CURRENT FOR LAMPS USIN6 COPPER COATED, HIGH INTENSITY, PROJECTOR CARRONS
Arc Current — Amperes
New Victory Carbons — Size and Type
"1 Kw" High Intensity, A.C. "1 Kw" High Intensity, D.C.
Simplified High Intensity, D.C.
with adjustable feed ratio Simplified High Intensity, D.C.
with fixed feed ratio Simplified High Intensity, D.C.
52-66 40-42
42-45
7 mm x 9 inch H.I., A.C. Carbons in both holders 7 mm x 12 inch or 14 inch "Suprex" Positive
6 mm x 9 inch "Orotip" C Negative
7 mm x 12 inch or 14 inch "Suprex" Positive
6 mm x 9 inch "Orotip" C Negative
7 mm x 12 inch or 14 inch "Suprex" Positive
7 mm x 9 inch "Orotip" C Negative
8 mm x 12 inch or 14 inch "Suprex" Positive 7 mm x 9 inch "Orotip" C Negative
You can obtain maximum efficiency and economy from your Victory Carbons by observing the following simple rules.
USE CARBON TRIM RECOMMENDED FOR YOUR PROJECTION EQUIPMENT.
The Victory Carbon trims indicated in the above table were established by comprehensive laboratory and field tests to ascertain the best results obtainable in all types of equipment.
OPERATE CARBONS AT SPECIFIED ARC CURRENT.
Better projection and greater economy are obtained when recommended arc currents are maintained. The maximum allowable arc current is stamped on each Victory Carbon at the left of the trade-mark.
CHECK FEED RATIO CAREFULLY.
Changes of arc current alter the ratio of burning rate be
tween positive and negative carbons. On lamps equipped with adjustable feed and formerly operated above 45 amperes arc current, this ratio should be adjusted to meet the new current conditions.
A bulletin describing operation of the new Victory High Intensity Carbons is available for distribution and will be sent promptly upon request.
SAVE
T
E
COPPER
Most of the copper used for plating copper coated projector carbons drops to the floor of the lamp house when the carbons are burned. Continue to save these copper drippings and turn them over to your supply dealer as designated by our government.
NATIONAL CARBON COMPANY, INC.
Unit of Union Carbide and Carbon Corporation
LTES
Carbon Sales Division, Cleveland, Ohio
GENERAL OFFICES 30 East 42nd Street, New York, N. Y.
BRANCH SALES OFFICES New York, Pittsburgh, Chicago, St. Louis, San Francisco