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 clarifying the design and pressure limitations of Relief Valve Bellows Assemblies.
| Identifier | ExFiles\Box 152\1\ scan0064 | |
| Date | 10th January 1933 | |
| X832 TELEPHONE: MUSEUM 4343 & 4344. TELEGRAMS: "CROSBY LONDON" WORKS: ROTHERHAM. INSPECTION & TESTING DEPT. 14 & 15 UNION ST. {Capt. P. R. Strong} , LONDON, W.1. REGISTERED OFFICE: 147 QUEEN VICTORIA ST. {Capt. P. R. Strong} , LONDON E.C.4. RESIDENT ENGINEERS IN SCOTLAND, NORTH-EAST COAST LANCASHIRE, YORKSHIRE. MIDLANDS, SOUTH WALES, HOME COUNTIES ETC. SOLE AGENTS FOR CROSBY STEAM GAGE & VALVE CO. MASON REGULATOR CO. ROCKWOOD SPRINKLER CO. FULTON SYLPHON CO. BADGER METER MFG CO. CROSBY VALVE & ENGINEERING Co LTD HEAD OFFICE & WAREHOUSE: 41 & 42, FOLEY ST. {Capt. P. R. Strong} , GT. PORTLAND ST. {Capt. P. R. Strong} LONDON, W.1. DIRECTORS: G.A. MOWER, M.I.Mech.E. (CHAIRMAN) G.R. THURSFIELD, M.I.Mech.E. OUR REF: PEL/MM. YOUR REF: Ha/Les.1/MA. 10th January, 1933. Messrs. Rolls-Royce, Ltd., DERBY. Dear Sirs, We duly received your letter of the 6th inst. regarding the Relief Valve Bellows Assemblies which we supplied to your drawing F.100692, and must apologise for the delay in acknowledging this but we have been looking carefully into your requirements. In the first place we would like to respectfully point out that these Bellows are not designed or intended to work as springs and whilst they have a certain amount of flexibility and will stand 30 lbs. oil pressure without distortion, we would point out that your original sketch dated by your Print Room 29th September, 1932, shows the Bellows Assembly fitted to a housing in which the oil is supplied internally under pressure. This pressure is opposed by means of a spring which, as the oil pressure is realised, closes the Bellows, and we take it that you | ||