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).
Suggestions for design modifications, including a recommendation from Mr Royce for a fan-shaped guard for doors.
| Identifier | ExFiles\Box 75\4\ scan0141 | |
| Date | 4th October 1912 guessed | |
| -2- Cannot this be modified in some way to increase its efficiency ? 4. He recommends that the doors should be made of sheet metal. Mr Royce suggests that a simple scheme for keeping the door open or shut could be made by attaching to the top and bottom of the door a fan shaped guard, which would not only serve this purpose but would also collect more air. | ||