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 Rolls-Royce of America concerning battery ignition condenser tests and insulation breakdown.
| Identifier | ExFiles\Box 61b\4\ scan0071 | |
| Date | 21th November 1921 | |
| X4275 Oy5 - G 211121 Nov. 21, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. X.4275 . X2512 . X4430. Copies attached for Mr. Hives & Mr. Clarke. Dear Sir:- Re: Battery Ignition Condenser Tests. COPY Some time ago we received an inquiry from Mr. Hives asking for information as to the apparent partial breakdown of the insulation in paper condensers. The attached copy of a reply from Mr. Curtis of the American Bosch Magneto Corp. deals with the subject fully and points out the fact that though leakage occurs in the paper condenser when it becomes hot, its capacity for high frequencies is increased. Yours truly, MO/G ROLLS-ROYCE OF AMERICA, Inc. Per M.{Mr Moon / Mr Moore} Alley Enc. (Copy of letter) | ||