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).
Letter from Joseph Lucas Research Laboratories regarding a defective voltage regulator with a fractured porcelain insulator.
| Identifier | ExFiles\Box 60\3\ Scan265 | |
| Date | 22th November 1933 | |
| TRADE MARK 86044. THE JOSEPH LUCAS RESEARCH LABORATORIES TELEGRAMS: "LUCAS, BIRMINGHAM" GREAT KING STREET WHEN REPLYING PLEASE REFER TO TELEPHONE: NORTHERN 5201 (12 Lines) BIRMINGHAM 19 CER/W. WST 22nd November 1933. Messrs. Rolls Royce Ltd., Nightingale Road, DERBY. For the attention of Mr.H.E.West. Dear Sirs, We must apologise to you for not replying to the second part of your letter of October 31st with reference to an alleged defective regulator. The writer handed the regulator over for investigation at the same time as the schedule of test procedure which you intend to adopt for checking voltage regulators, and was subsequently informed that the matter had been checked and a reply sent to you. Upon actually checking up the regulator it was found that the setting on the first contacts was low and on the second contacts also rather low and at the same time erratic. When the regulator was dismantled it was found that the porcelain insulator which carries the adjusting spring had fractured with the result that the spring tension was lowered, and as the broken portions of the insulator were fouling the movement, the operation of the regulator was caused to be erratic. This failure is most unusual and in fact is the first one that the writer has ever seen. | ||