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).
On test results for St. Helens Cable and Rubber Co's cellulose varnished fabric covered wires.
| Identifier | ExFiles\Box 168\1\ img117 | |
| Date | 28th May 1932 | |
| X6117. Roy.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.2/MA. 28.5.32. ST.{Capt. P. R. Strong} HELENS CABLE AND RUBBER COS CABLES. We have tested the sample submitted of black cellulose varnished fabric covered wires suitable for chassis wiring and find this class of cable to be superior to the other grades tested i.e. Helsby & Ripogloss. The varnished covering does not deteriorate under chemical action and heat so quickly as the Helsby and the insulation properties are considerably better than Ripogloss. The next time we require any cable in this class we shall certainly try a sample from this firm in preference to what we are at present using. Hs{Lord Ernest Hives - Chair}/Wst. | ||