Primary battery, sectioned dry cell, Columbia Ignitor, zinc/carbon/manganese oxide/asphalt/brass/cardboard, National Carbon Company, Cleveland, Ohio, USA, 1918-1922.
In this battery the cylindrical zinc inner casing is the anode. The cathode consists of a granular mixture of manganese oxide and carbon (plus water in an intact cell) separated from the anode by a cylinder of inert material. When the battery is in use, the central carbon rod collects charge from the surrounding cathode and conducts it to the brass terminal at the centre top of the battery. A second terminal sits on the top edge of the battery, attached to the zinc electrode.
The outer casing is cardboard, tinted orange on the outside, with the eagle trademark and text in cream. There is a layer of corrugated cardboard on top of the cathode,with a layer of light brown paste above it and two resinous layers on top, the first black and the top one brown; the resinous material is probably asphalt. The battery is nominally rated at 1.5 volts.
On the front: Drawing of an eagle / Trade Mark Reg. U.S. Pat. Off./ FOR/ GENERAL IGNITION/ Manufactured by/ NATIONAL CARBON CO INC/CLEVELAND, OHIO, U.S.A.
On the back: COLUMBIA IGNITOR/ DRY CELL/ FOR GENERAL IGNITION/ INSPECTED/ TESTED/ RELIABLE / This cell embodies the highest degree of efficiency and reliability known in dry cell service./ Its strong current and quick recuperation make it desirable, economical and a positive success in any form of general motor ignition./ Manufactured only by/ NATIONAL CARBON CO INC/ CLEVELAND, OHIO USA.