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 Hepworth & Grandage Ltd confirming specifications for compression rings.
| Identifier | ExFiles\Box 148\3\ scan0303 | |
| Date | 25th January 1938 | |
| MANUFACTURERS OF "HEPOLITE" PRODUCTS ON AIR MINISTRY APPROVED LIST - ADMIRALTY - WAR OFFICE - CROWN AGENTS H.109 TELEGRAMS AND CABLES: 'RINGS, BRADFORD.' CODES: BENTLEY'S, A.B.C. 5th EDn TELEPHONE: 11100 (8 Lines) HEPWORTH & GRANDAGE LTD PISTONS PISTON RINGS GUDGEON PINS LINERS ST.{Capt. P. R. Strong} JOHN'S WORKS BRADFORD LONDON SERVICE DEPOT 78, YORK ROAD, KINGS CROSS, N.1. TELEPHONE: TERMINUS 1418/9 TELEGRAMS: 'VAGRIT, NORDO,' LONDON MIDLAND SERVICE DEPOT 120 SNOW HILL, BIRMINGHAM TELEPHONE: CENTRAL 2571/2 TELEGRAMS: HEPCO, BIRMINGHAM SCOTTISH SERVICE DEPOT 75, MITCHELL STREET, GLASGOW TELEPHONE: CENTRAL 1745/6 TELEGRAMS: HEPOLITE, GLASGOW WESTERN SERVICE DEPOT 27, REDCLIFF STREET, BRISTOL,1. TELEPHONE: 22447/8 TELEGRAMS: HEPO, BRISTOL YOUR REF Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews}2/AP. OUR REF JHM/LC. DATE 25.1.1938. Messrs.Rolls-Royce Ltd., DERBY. For the attention of Mr.Matthews. Dear Sirs, We acknowledge with thanks, your letter of yesterday's date, enclosing print of your normal Compression ring E.60820, and your remarks regarding radial depth have been carefully noted. Our Joint Managing Director, Mr.W.Hepworth requests us to confirm that we shall be pleased to supply these rings with a radial depth of .120", with a high point of .020 to .025, giving a pressure of 15 lbs per sq.inch on the cylinder wall. We shall be obliged if you will favour us with your covering order, when we will proceed without delay. Again thanking you, We are, Yours faithfully, HEPWORTH & GRANDAGE LTD J.H. MALLINSON Handwritten note top centre: 1256 | ||