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).
List of patent summaries for engine bonnets, radio shielding, ignition systems, and gear pumps.
| Identifier | ExFiles\Box 147\4\ scan0117 | |
| Date | 3rd October 1940 guessed | |
| No. Patentee. Title Simultaneously actuated by the reaction consequent upon the operation of the hydraulic operating means. 525,933 Bayerische Motoren Engine bonnets Werke A.G. of motor vehicles. Bonnet having single opening flap at the top is held in the closed position, against the reaction of springs which urge it into the partially open position, by catches, the release of which is actuated from the driver's seat. 525,938 R.H.Stone and M.F.Peters. Radio shielding. Whole engine is enclosed in a metal shield, a space is left between shield and engine for the circulation of air and shield is in places "foraminous" i.e. has holes through which air can pass but radio waves cannot. 525,939 R.H.Stone and M.F.Peters. Radio shielded ignition systems for internal combustion engines. The manifold and conduits leading to the spark plugs are formed as a single radio shielded unit. The lead to the plug is adapted to be in- serted and withdrawn therefrom with the plug without disturbing this shield. 525,986 F.Egersdorfer and Gear Pumps. Ehrich & Graet z A.G. Gear pump for supplying fuel to internal combustion engine has suction and delivery passages formed in head of pump and bores parallel with bores for the gear wheels connect these passages with suction and delivery sides of pump. Pump body is said to be easily machined and it and gear wheels are not deformed by suction or pressure. | ||