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1 XHIBITORS and projectionists across America are to be congratulated for their splendid contribution to the war effort by conserving and recovering much of the copper plating of their "National" Victory Carbons . . . copper that would have been completely lost but for their cooperation.
Naturally the copper coating on Victory Carbons is as thin as practicable, because copper is a vital war material. This calls for strict maintenance of arc current within the recommended range, and careful adjustment of the carbon feed ratio.
Satisfied theater audiences everywhere are testimony to the constant attention being given to the current and feed factors.
In addition, tons of copper drippings and copper plate stripped from carbon stubs have been turned back into production channels as your Government urged.
Your continued cooperation in saving copper is still of utmost importance, for copper needs go right on expanding as America's war production grows. YouVe done a splendid job. Keep up the good work!
As a reminder, check the table below for carbon trim and current values specified for your equipment. A bulletin describing completely the operation of the Victory High Intensity Carbons will be sent promptly on request. Write for it today.
* BUY UNITED STATES WAR BONDS*
The word "National" is the registered trade-mark of National Carbon Company, Inc.
RECOMMENDED TRIM AND RANGE OF ARC CURRENT FOR LAMPS USING COPPER COATED, HIGH INTENSITY, PROJECTOR CARBONS
Type of Arc
Arc CurrentAmperes
New Victory Carbons — Size and Type
"1 Kw" Hich Intensity, A. C. "1 Kw" High Intensify, 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
NATIONAL CARBON COMPANY, INC.
Unit of Union Carbide and Carbon Corporation
CARBON PRODUCTS DIVISION, CLEVELAND 1, OHIO
Genera/ Offices 30 East 42nd Street, New York 17, N. Y.
Branch Sales Offices New York, Pittsburgh, Chicago, San Francisco
JANUARY 1944
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