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).
With diagrams concerning the design of tremblers and their spring mechanisms.
| Identifier | Morton\M11\ img069 | |
| Date | 28th August 1917 guessed | |
| -3- To Mr. Ellis from R.{Sir Henry Royce} c. to Hl. c. to Clk. X3129 Re - Tremblers - contd. Further to R10/W14817. Compression Spring. Knife edge formed of 2 pins. what is standard distance. located by pin in slot. bridge. tension spring. It is intended that these armatures shall be light and spring arranged to return them to their stops very quickly. FHR. | ||