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 unsuitability of certain brittle materials for fuse holders and a list of alternatives provided.
| Identifier | ExFiles\Box 61\2\ scan0333 | |
| Date | 16th April 1920 | |
| R.R. 235 B (200 T) (S F.{Mr Friese} 674. 22-5-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2376. X.2575 EFC. from RHC.{R. H. Coverley - Production Engineer} RHC{R. H. Coverley - Production Engineer}1/LG16.4.20. X.1109 RE FUSE HOLDERS IN VARIOUS MATERIAL. X.3962. X.2575 We are handing to you the following Fuse Holders and we would point out that it is impossible for us to make fuse holders from Rob. B. and Rob. D.{John DeLooze - Company Secretary} owing to it being so brittle. 2 off Vulmos Red. 2 " Black. 2 " Diamond Fibre. 2 " Continental Fibre. 2 " Isolite. RHC.{R. H. Coverley - Production Engineer} | ||