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).
Blueprint drawing for a section of steel for bumpers for a Ford B.HP'Y' 1934 model.
| Identifier | ExFiles\Box 118\2\ scan0190 | |
| Date | 4th September 1934 | |
| FINISH: G.{Mr Griffiths - Chief Accountant / Mr Gnapp} GRIND, F.{Mr Friese} MACHINE, P. PLANISH, L. LINISH, D.{John DeLooze - Company Secretary} FILE, R.{Sir Henry Royce} ROUGH REPORT ALL CHANGES AND ERRORS TO DRAWING OFFICE. WORK ONLY TO FIGURED DIMENSIONS. DO NOT SCALE. MATERIAL: H.R. Steel ANALYSIS: Carbon. .65 - .75% Mang. .50 - .70% Silicon. .10 - .20% Sulph. .04% Max. Phos. .03% Max. MATERIAL TOLERANCE HEAT TREAT: Heat to 1480°F Quench in oil. Draw at about 700°F.{Mr Friese} Brinell 340-387 after mang FINISH: MATERIAL SIZE: .1275" / .1125" X WILMOT-BREEDEN LTD BIRMINGHAM TITLE: SECTION STEEL FOR BUMPERS. DRG. No.: F.M.442/2 SCALE: 1/1 MODEL: Ford B.H.P.'Y' 1934 DR.: B TR.{Capt. F. W. Turner - Finance}: L.M.B. CH.: J.H.M. Tolerance on all Dimensions is ± .010" Unless Otherwise Specified. MANUFACTURING NOTES: Surface must be free from pits. scale & roll marks must polish and take nickel plate. Brinell 255 max. REVISIONS: No. 1, DATE 5.9.33, WAS .125-.115, SIGN JHM/LMB No. 2, DATE 4.9.34, WAS Centre radii changed., SIGN JHM ARCHIVE No.: 5203 | ||