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 Wellworthy Piston Rings regarding AC.9 bearings, discussing oil grooves and a proposed heat treatment and testing plan.
| Identifier | ExFiles\Box 116\1\ scan0075 | |
| Date | 14th November 1938 | |
| SERVICE DEPOTS LONDON 89 BLACKFRIARS RD S.E.1 TELEPHONE: WATERLOO 5762/3 172 GT. PORTLAND ST.{Capt. P. R. Strong} W.1 TELEPHONE: MUSEUM 2433 119 LEYTONSTONE RD STRATFORD . E . 15 TELEPHONE: MARYLAND 2439 BIRMINGHAM 143 SUFFOLK STREET TELEPHONE: MIDLAND 0638 MANCHESTER 232 DEANSGATE TELEPHONE: BLACKFRIARS 5914 NEWCASTLE MILLICAN'S BUILDINGS, MARKET ST TELEPHONE: 23874 ON ADMIRALTY, WAR OFFICE AIR MINISTRY, INDIA OFFICE LISTS WELLWORTHY PISTON RINGS LIMITED PISTON & PISTON RING SPECIALISTS LYMINGTON HANTS WORKS & HEAD OFFICE: STANFORD RD SERVICE DEPOTS LIVERPOOL 45 RENSHAW ST.{Capt. P. R. Strong} TELEPHONE: ROYAL 5786 LEEDS 82 WOODHOUSE LANE TELEPHONE: 25774 CROYDON 246 HIGH STREET TELEPHONE: 6121-2 SOUTHAMPTON 17 PORTSWOOD ROAD TELEPHONE: 74778 HULL 285 ANLABY ROAD TELEPHONE: 15312 CANTERBURY 21 & 22 ROSE LANE TELEPHONE: CANTERBURY 2456 TELEPHONE: LYMINGTON 520 (5 LINES) TELEGRAMS: WELLWORTHY CODE: MARCONI DIRECTORS: G.{Mr Griffiths - Chief Accountant / Mr Gnapp} H.{Arthur M. Hanbury - Head Complaints} ALEXANDER J.{Mr Johnson W.M.} W. HOWLETT C. B. KAY P. WALDEN C. W. WATERS A.{Mr Adams} J.{Mr Johnson W.M.} WOOLCOTT OUR REF FB/EHF.18762 YOUR REF RM{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}16/MH.{M. Huckerby} 14th November, 1938. Dict. 12.11.38. Messrs. Rolls Royce Ltd., Derby. Dear Sirs, Attention of C. T. Salt, Esq. We thank you for your letter of the 11th inst., in connection with AC.9 bearings for Ruston & Hornsby. We would certainly advise the oil groove in the crank-case, in view of the groove running round the exterior of the bearing. When the tests have been run I will advise you of any possibility of viewing the engine, so that we can go along together to examine same. We take this opportunity of thanking you very much for the time given to us at the meeting which was held between your people, Messrs. High Duty Alloys, and ourselves in connection with this AC.9 material, and we feel that we have now made some progress as regards knowing what your practice has been, and will do, as we have agreed, that is we will cast a number of bearings, forwarding one-third of the batch to your goodselves, one-third to High Duty Alloys and retain one-third here, so that we can each check the analyses of these bearings, each heat treat these bearings, which I would suggest should be strictly to the specification laid down, that is 12 hours for the first heat treatment at 180ºC., and the second period of 12 hours at the same temperature, and that we should each record the Brinell hardness figures obtained, both on the un-heat treated casting and also after each heat treatment operation. This would then give us definite information as to where any of us are in error, as regards either heat treatment or the method of obtaining the hardness [Handwritten Notes] [Top center]: 1020a. [Next to date]: File [Next to 'Attention of C. T. Salt, Esq.']: R.R. [Left margin, vertically]: Seems a sound scheme RW | ||