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).
Follow-up letter from Le Carbone regarding the test results of carbon brushes.
| Identifier | ExFiles\Box 50\5\ Scan140 | |
| Date | 1st December 1922 | |
| X 4333. CONTRACTORS TO THE ADMIRALTY, POST OFFICE, WAR OFFICE, &c. LE CARBONE COVENTRY HOUSE, SOUTH PLACE, LONDON, E.C.2, ENGLAND. CARBONS -FOR- MICROPHONES, WELDING, SMELTING, ELECTRO- -DEPOSITION, RESISTANCES, -&c. &c. - ELECTRO- -GRAPHITIC CARBON. (GIRARD & STREETS PROCESS) CARBI SACK BATTERIES, LALANDE CEDS. A.B.C. CODE 4th & 5th EDITION. TELEPHONE- CLERKENWELL 1826. TELEGRAMS- "LACOMBE, AVE, LONDON" BRUSHES -IN- CARBON, METAL, COMBINED METAL and CARBON FOR ALL TYPES -OF- DYNAMOS -&- MOTORS. CARBON PACKING RINGS, TURBINE ENGINES, MAGNETO CARBONS. SUPPLIERS TO THE PRINCIPAL RAILWAYS, TRAMWAYS, CORPORATIONS & ELECTRIC LIGHT & POWER UNDERTAKINGS THROUGHOUT THE WORLD. December 1st, 1922. Messrs. Rolls Royce Ltd., Derby. Dear Sirs, Our Ref. 3580/P.4335. On August 4th last we had the pleasure of submitting for test a set of carbon brushes and up to the present we do not appear to have heard anything as to the result of the test. If not troubling you too much we should be pleased to learn whether you can favour us with any report concerning the result obtained. If you feel you would like to make a further test we should be only too pleased to have the opportunity of assisting you, and to guide our works people in their further selection we should be pleased to receive any information you are in a position to give concerning the sets already tried. Thanking you in anticipation, We are, Yours faithfully, FOR LE CARBONE. London Manager. C/W | ||