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).
'Maconite' insulated H.T. cables for chassis.
| Identifier | ExFiles\Box 168\1\ img028 | |
| Date | 10th May 1926 | |
| Expt. Report. To R.{Sir Henry Royce} from EFC. X.3860. X3860 EFC1/T10.5.26. c. to BJ. PN.{Mr Northey} " " E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} " " Ey. EP.{G. Eric Platford - Chief Quality Engineer} " " Wor.{Arthur Wormald - General Works Manager} Hm.{Capt. W. Hallam - Head Repairs} "MACONITE" INSULATED H.T. CABLES FOR CHASSIS. "Maconite" is the trade name for a special insulating compound for electric cables, and is applied to such in various ways by the Macintosh Cable Co.Ltd., at Ashbourne Road Mills, Derby. In particular wires and cables are made up for many purposes with an insulating covering of pure Maconitem only, or with pure Maconitem covering with braiding. The Maconitem material, although apparently composed very largely of rubber, is said by the makers to contain a smaller proportion of rubber than would be anticipated. It is claimed to have quite extraordinary properties in almost all directions, e.g.:- Mechanical strength; Resistance to chemicals; " " oils; " " heat; etc. etc. Without going into full details of the claims made for this material, it certainly does appear that these may be very largely confirmed by performing the necessary tests, and in this connection we attach a copy of my assistant's report WB.{Mr Brazier/Mr Bell}79, dealing with the results of a few tests which we ourselves have made on a sample cable submitted to us. Contd. | ||