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).
The claims for a vehicle heater and defroster system.
| Identifier | ExFiles\Box 147\2\ scan0232 | |
| Date | 21th February 1940 guessed | |
| - 2 - Alternatively, no duct at all need be employed, the air being lead by means of flexible tubes to inlet connections fixed to the scuttle rail. This is then arranged to allow the air to flow out of the rail at the foot of the screen, and so produce a defrosting or demisting effect. CLAIMS. We declare that what we claim is:- 1. Heater device having only one fan of the impellor type, driven by an electric motor mounted separately from the heating device, and driving the fan by a solid or flexible drive. This heater arranged to draw air either from inside or outside the vehicle and to provide alternatively heat to the interior of the car, to the defroster or both at once. 2. Maximum efficiency obtained by providing a guide vane whereby air is led in from the back of the matrix to the centre of the impellor. 3. Control of heat to car or defrosters or both, arranged by a rotating baffle, mounted either on bearings through the matrix or by other means, and controlled either directly on the heater, or by remote drive from the instrument board. 4. Defrosting ducts arranged non-symmetrically to the distributory pipes to obtain best air flow conditions on the screen, or alternatively, no distributor nozzles at all; the air being distributed along the base of the windscreen by small ducts in the scuttle rail. _________________ | ||