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 Packless Gland Co. Ltd. regarding the rating and fluid compatibility of bellows for a cooling system.
| Identifier | ExFiles\Box 4\1\ 01-page048 | |
| Date | 14th April 1934 | |
| X4694 Exptl. Dept. Es/Rm.{William Robotham - Chief Engineer}2/KW. 14th April, 1934. The Packless Gland Co. Ltd., Windmill Road, Sunbury, Middlesex. Dear Sirs, We thank you for your letter of April 4th. We enclose scheme No. LRC.3835, which shows the complete arrangement in which it is proposed to use bellows EX.13864, and should be obliged if you would treat this as confidential. We cannot quite understand your remarks about the rating of the No. 2 bellows being 96 lbs. per inch, as in your letter of February 22nd. you gave us a figure for No. 2 bellows as load to compress 3/16" - 7 1/2 to 8 lbs. This comes to a rating of approximately 40 lbs. per inch. The difficulty about using a fluid with a higher vapour pressure than Ethyl Alcohol is that the cooling system is likely to attain a temperature of 100°C. and we anticipate any fluid with a really low vapour pressure would produce such high loads at the boiling point of water that the bellows would be likely to fail. We should like your views on this subject. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||