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).
Sample 'SYN' carbon brushes for testing on a 20/25 shunt dynamo and a Bentley dynamo.
| Identifier | ExFiles\Box 166\1\ img040 | |
| Date | 28th June 1934 | |
| Roy.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Wst. 86093. Hs{Lord Ernest Hives - Chair}/Wst.7/MA.28.6.34. "SYN" CARBON BRUSHES. With reference to the attached correspondence the technical data quoted by this firm certainly justifies us accepting sample brushes from them for test. Will you therefore obtain for us two sets each of brush of the size suitable for the new 20/25 shunt dynamo and the Bentley dynamo, in their grades 4618, 8579, NRC{N. R. Chandler}2 and EN150. By/RD. will be able to give drawing numbers for the correct brushes. Hs{Lord Ernest Hives - Chair}/Wst. Attached letter from Synthetic Carbon & Engineering Co.Ltd., reference CHK/DF/UHL., 25th, June 1934. [Handwritten note on left margin]: S18A Aug 8579 212 | ||