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).
Specification and analysis sheet for a valve spring outer.
| Identifier | ExFiles\Box 158\4\ scan0088 | |
| Date | 14th May 1936 | |
| X1360 OCT 23 1936 BRITISH BOND VAUXHALL MOTORS LIMITED SPECIFICATION SHEET (Miscellaneous Parts & Materials) Part Name: Valve Spring - Outer. Date: 14/5/36. Part No. 1084410-S. Swedish spring Steel Oil Hardened & Tempered wire. GENERAL SPECIFICATIONS & ANALYSIS Material Treatment Test. Test Spring Steel Wire as used for Spring Part No. 1018743. A straight 10" length of wire obtained from a spring must withstand twisting thro' 7 complete revolutions in clockwise direction and then 10 revolutions in anti-clockwise direction without fracture. Springs must withstand 100 hours running on Vauxhall Motors Spring Testing Machine, particulars of which may be obtained on application. Failure of any sample taken from a delivery will render the whole delivery liable to rejection. ENGINEERING DEPARTMENT APPROVALS Choice, if any Trade Name Manufacturer Address CHANGE RECORD Date Mark Order No. Details of Change APPROVED: H.S. Bavister. H.{Arthur M. Hanbury - Head Complaints} Drew. Form No. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 26. | ||