Motion Picture News (Jul-Aug 1916)

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July 22, 1916 ACCESSORY NEWS SECTION 487 i I I I I I I I I I I I CARBONS WHY NOT TRY THE SILVER TIP D. G. NEGATIVE PROJECTOR CARBON? (Patent applied for) This carbon is the most revolutionary improvement discovered in many years, for projection work. Its small size and superior composition give you 1. Whiter light for less current. 2. A minimum of deposit in the lamp house. 3. A perfect crater at all times. 4. Quiet and steady burning of the arc. 5. Less heat in lamp house and operating room. For 25 to 50 amperes D. C. use j f« ^ National Cored Upper ^ I 5/16 X 6 Silvertip Solid Lower ■c^^ cn AC ^^^^^^^ n n / M x 12" National Cored Upper For SO to 65 amperes D. C. use | {^^^^ x 6" Silvertip Solid Lower ■c^, AC 4-^ in ^^^^^^^ n n / % x 12" National Cored Upper For 65 to 70 amperes D. C. use | ^y^^ x 6" Silvertip Solid Wer •P 7n cc r> r ..^^ / ■% x 12" National Cored Upper For 70 to 85 amperes D. C. use | ^ ^„ giivertip Solid Lower rr^ cc t„ im n r / 1 x 12" National Cored Upper For 85 to 100 amperes D. C. use | ^ ^„ sii^^^tip Cored Lower These small negative carbons require a special ADAPTOR for use in the holder of present lamps. STEEL ADAPTORS must not be used because their resistance is high, which results in heating, short life, and excessive needling. WE HAVE DESIGNED A SPECIAL BRONZE ADAPTOR, WHICH WE WILL FURNISH FREE OF CHARGE TO USERS OF OUR CARBONS These carbons and adaptors will be shown at our booth at the Chicago Convention, July 10th to 18th. Be sure to visit our booth and see an actual demonstration of these carbons burning in the lamp. Manufactured only by NATIONAL CARBON COMPANY CLEVELAND, OHIO -Jf you like; the " NeWs,".' wilte our advertisers; if not, 'ttU us.