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 The Packless Gland Co. Ltd. regarding bellows assemblies, quotes for shock absorber units, and technical pressure specifications.
| Identifier | ExFiles\Box 151\2\ scan0223 | |
| Date | 4th April 1933 | |
| Telephone: SUNBURY 406. Codes: BENTLEY'S, WESTERN UNION. Telegrams & Cables: PACKLESS, SUNBURY COMMON. THE PACKLESS GLAND CO., LTD. MAKERS OF THERMOFLEX Bellows and Shaft Seals. THERMOFLEX WORKS. Windmill Road, Sunbury, Middlesex. DIRECTORS: M. {Mr Moon / Mr Moore} PAYNE. W. A. {Mr Adams} PAYNE. W. F. {Mr Friese} F. {Mr Friese} MARTIN-HURST. W.M.H/GN: Your Ref: HS {Lord Ernest Hives - Chair} /Les.20/KT: April 4th, 1933. Messrs. Rolls-Royce Limited, DERBY. Dear Sirs, We thank you for your letter of April 3rd. We have also received the parts necessary to make up the bellows assemblies to your Drawing No. Ex.10836. We are attending to these immediately. We are very pleased to hear that you were satisfied with the finished appearance of the bellows assemblies recently sent to you. We have to-day quoted you for Shock Absorber Units to your blueprint No. F. {Mr Friese} 100692, and hope that you will find these prices reasonable. Will you be good enough to let us know whether it is your wish for us to quote you for similar quantities to your print No. F. {Mr Friese} 100773? With regard to the maximum permissible internal pressure, for a standard bellows this should not exceed 45 lbs/sq.in. We can, of course, make bellows to stand very much higher pressures. When testing it will be found that when the maximum safety point is reached, the maximum solid length of the bellows commences to increase. As the free length remains unaltered the movement is gradually cut down. This is due to swelling of the convolutions. | ||