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).
Alteration details for a Roller (Ball Bearing Mounted), modifying dimensions to increase clearance.
| Identifier | ExFiles\Box 153\1\ scan0191 | |
| Date | 10th January 1939 | |
| TO Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} R.R. 281 SHEET NO. 100361-158 KALAMAZOO PATENT "CUT-AWAY" SHEET BRIT. PAT. 375964, 1931 TITLE TO BE INSERTED BELOW LEVEL OF ASTERISK ALTERATION The diameter of the track has been increased from 1.4134+.001-.000 to 1.459+.001-.000 diam. The width of the roller has been decreased from 1.1676+.000-.002 to 1.1534+.000-.002. The dimensions from the sides to the C/L. of track have been decreased from .1878+.001-.001 to .1807+.001-.001. 2 prints to HPS.{Horace Percy Smith - Experimental Factory Mgr} 1 " " Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} for Makers. INTRODUCED REASON To give a clearance of .003 between balls and race. PIECE NO. F.89831/2. MODEL Ph:111 (Expl) SECTION 7050 Roller(Ball Bearing Mounted). REQUEST Messrs. Hoffmann & Co. DEPT. SECTION D.O. "1a DP APPROVED BY BY/HEB.{H. Biraben} ALTERATION NO 18283/F.{Mr Friese} DATE 10.1.39. | ||