NATIONAL CARBON COMPANY CLEVELAND, OHIO MANUFACTURERS OF Columbia Carbon Products COLUMBIA ARC CARBONS For open, enclosed and miniature lamps, projectors, SILVER TIP FLAMING CARBONS CARBON AND GRAPHITE BRUSHES SPECIAL SHAPES IN CARBON For circuit breaker contacts, lightning arresters, carbon packing rings for steam turbines, resister carbons, carbon crucibles. CARBON FOR TELEPHONES Transmitter diaphragms, discs and back plates, granular and globular carbon. CARBON ELECTRODES For arc and resistance electric furnaces. DRY AND WET BATTERIES For all classes of open and closed circuit service. COLUMBIA MULTIPLE BATTERIES For automobile and motor boat ignition and lighting. |