"Tungar" - direct current. Cat. No.279174. Red, oblong pressed steel box with handle on top and with an extended base; the lid can be removed. Light bulb and cylindrical coil inside. The bottom of the case having transformer-like plates painted black. Power supply input at rear plus a fitting for a circular output feed.
Tungar / REG. IN U.S. PAT. OFFICE / BATTERY CHARGER / GE / CAT. 279174 / VOLTS A.C. 230 VOLTS D.C. 6/96 / AMP. D.C. 2/25 CYCLES 40/50 / PAT'D FEB. 27 '12 DEC 30. '13 MAY 9. '16 MAY 14. '18 OCT. 11. '21 / GENERAL ELECTRIC CO., U.S.A. / NP19245 Maker's Plate
The General Electric Company Limited. Battery Charger [Tungar], 1979.192. The Museum of Transport and Technology (MOTAT).