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 to The Pyrene Co. Ltd. regarding the treatment of coil springs, specifically Parkerizing versus Cadmium plating.
| Identifier | ExFiles\Box 154a\2\ scan0093 | |
| Date | 3rd May 1939 | |
| 1305 Experimental Dept. Rm {William Robotham - Chief Engineer} /AFM. {Anthony F. Martindale} 7/MH. {M. Huckerby} 3rd. May, 1939. The Pyrene Co. Ltd., Great West Road, Brentford, MIDDX. Your Ref. MFD/2.-ARK/DMD. For the attention of Mr. A.R.King. Dear Sirs, In reply to your query about Parkerized springs, it is true that we had some coil springs treated in this manner but we decided to Cadmium plate them for the time being. Your letter reminds us that we can save a few pence if we continue our tests on Parkerizing, and when an opportunity occurs we will test the weather resisting capacity of this finish on coil springs. Yours faithfully, for ROLLS-ROYCE LTD. | ||