From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Product sheet for Twinflow Car Heaters, detailing their features and price.
| Identifier | ExFiles\Box 137\1\ scan0183 | |
| Date | 5th November 1936 guessed | |
| TWINFLOW CAR HEATERS. £4. 0. 0 NEW COMFORT IN COLD WEATHER. Balanced distribution of warm air and “heat where you want it” are the distinct advantages of the Harrison Twinflow Downdraft - Outdraft heating principle. The Twinflow Downdraft - Outdraft principle, unlike conventional outdraft heaters, avoids overheated “ceiling areas” while “floor areas” remain chilly and uncomfortable to feet and ankles. DOWNDRAFT - OUTDRAFT HEAT DELIVERY. The exclusive TWINFLOW principle of dual heat delivery is a real step forward in the ideal heating of a motor car ... Twinflow Heaters in addition to conventional outdraft delivery, also direct heat to the coldest part of the car - at the floor line - where feet and ankles tend to suffer in cold weather ... Heat then rises ... by natural laws...to warm the balance of the car. EXCEPTIONALLY LARGE CAPACITY. Major advancements have been made in core design and heating efficiency which makes possible heat output in excess of 11,000 B.T.U. hourly from all Twinflow Models. DELCO MOTOR ... ILLUMINATED SWITCH. All Twinflow Models are equipped with Delco Motors, mounted on rubber base and with self-aligning oilless bearings throughout... controlled by variable speed, illuminated switch of handsome design. DELCO - REMY & HYATT, Ltd., 111, Grosvenor Road, London, S.W.1. | ||