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 internal H.T. connection for the Goshawk II battery ignition coil.
| Identifier | WestWitteringFiles\J\December1922\ Scan19 | |
| Date | 9th December 1922 | |
| TO BY.{R.W. Bailey - Chief Engineer} FROM E.{Mr Elliott - Chief Engineer} c. to CJ. c. to EFC.✓ c. to HS.{Lord Ernest Hives - Chair} RECEIVED ORIGINAL E2/M9.12.22. 3 GOSHAWK II. BATTERY IGNITION. X4079 Referring to the improved ignition coil shewn on drawing LeC 1653, the internal H.T. connection on the coil is in the form of a nutcracker spring made from springy brass strip about .3 wide, one end being bent over and soldered to the H.T. winding, the other end having a button on for making contact with the H.T. terminal in the side of the coil case. The inner leg of the spring is suitably fixed by binding to the coil itself. E.{Mr Elliott - Chief Engineer} | ||