 The electrical side of the business was involved in the production of field telephone sets, and accumulators (electrochemical cell batteries) for war purposes.At some time during or immediately after the war the company acquired the stock and casting patterns from several companies including the model steam fittings of Betrand Garside, the model locomotive 'specialities' of Southwark Engineering Co, and the productions of the Gas Engine Repair Co.While Whitney bought and sold a wide range of different model engines, they increasingly developed their own line of model steam engines, particularly for model marine use, and also small steam powered water pumps, and steam boilers.