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).
Design specifications for a radiator louvre frame to control airflow, including materials and operation.
| Identifier | ExFiles\Box 38\2\ Scan037 | |
| Date | 1st November 1923 | |
| Extract from E6/G1.5 19. X.3456. X.3499. (1) RADIATORS - It is not apparently possible to make any immediate alterations to the radiators which will facilitate the fitting of a means of cutting off the supply of air. Mr. Royce decided that some immediate effort must be devoted to designing a frame of louvres to go on the front of the existing radiator. 4.3653 The first few cars must be sent out without it, but the frame will be fitted later. The cars sent out without the frame should be provided, however, with simple blanking-off pieces. The louvre frame will be held in position by bolts passing through the matrix, of about 5 BA. These bolts will engage at the back of the radiator with a second frame, probably of angle section lined with soft material for carrying the bolt pressure, and distributing it so that it will not damage the matrix. The design work in connection with this matter will be done at West WitteringHenry Royce's home town. It is proposed to make louvres of formed wooden pieces joined together in a streamline section round a metal tube, as in sketch - The two wooden pieces would be held together by water-proof glue and screws. Each louvre would have a bearing at each end in a strip of bakelite about .2" thick fastened to a 16 SWG aluminium angle. The Bakelite need not necessarily be in one piece, but could be in sections for ease of moulding. The louvres must be arranged to be worked by a hand control preferably operated from the dash, and should also be made if possible, so as to be adapted afterwards for operation by a thermostat. The thermostat Contd. | ||