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 a supplier clarifying a bearing part number and suggesting an increased quantity to mitigate manufacturing scrap.
| Identifier | ExFiles\Box 153\4\ scan0068 | |
| Date | 17th May 1940 | |
| BRANCHES: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, GLASGOW. AGENTS IN PRINCIPAL COUNTRIES THROUGHOUT THE WORLD. [Handwritten: 1300. ?e] HOFFMANN Registered Trade Mark BALL-AND-ROLLER-BEARINGS STEEL-BALLS-AND-ROLLERS THE HOFFMANN MANUFACTURING Co. LTD. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY AND INDIA OFFICE. TELEPHONE 3151 (FIVE LINES) TELEGRAMS HOFFMANN. CHELMSFORD CODES USED: A.B.C. 5TH EDITION. BENTLEY PHRASE. BENTLEY 2ND PHRASE MARCONI AND WESTERN UNION 5 LETTER. MESSRS. ROLLS ROYCE LIMITED, EXPERIM ENTAL DEPT., DERBY. [Handwritten in red: Rm {William Robotham - Chief Engineer} /F.T.H] [Handwritten squiggle: AHH] CHELMSFORD. 17th. May 1940. YOUR REF. Rm {William Robotham - Chief Engineer} /FJH. {Fred J. Hardy - Chief Dev. Engineer} 5/JMB. IN YOUR REPLY PLEASE QUOTE OUR REF. CHS/AMB. Dear Sirs, We thank you for your letter of the 14th. instant with reference to steering gear rollers. Our bearing number you have quoted is N.2940. This is not a steering roller, and we presume you have in mind our bearing No. N.2904, your Part No. F.89670. We are quite willing to grind three of these outer races and supply the necessary inner races and balls, and to cover the possibility of scrap due to grinding errors, four outer races would be sufficient. As you know, we have in the past found a considerable percentage of material scrap, and to be quite safe, therefore, it will be best for you to let us have six races, so as to avoid any risk of not getting the required quantity of good parts. Yours faithfully, THE HOFFMANN MANUFACTURING CO. LTD. [Signature: C.H.Smith] TECHNICAL MANAGER. | ||