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 detailing a semi-isolation bolt assembly using rubber bushes and washers.
| Identifier | ExFiles\Box 53\4\ Scan176 | |
| Date | 27th March 1928 guessed | |
| SEMI ISOLATION 117 M.C. BOLT CENTRES AS ON F.4735. STRIP OF RUBBER RUNNING RIGHT ROUND TOP OF THE DASH IF AVAILABLE. OTHERWISE CONTINUOUS PIECES CUT TO FIT OFF CAR BUFFERS THESE ARE THE REQUIRED RUBBER HARDNESS THIS MAY ADVANTAGEOUSLY BE OF VERY HARD RUBBER 1.075 .600 F.9056 THICKNESS A.{Mr Adams} WHEN RUBBER TIGHTLY COMPRESSED, EQUAL TO PRESENT GAP BETWEEN SCUTTLE & DASH. RUBBER BUSH. MAKE AN EASY FIT. WHEN FREE, IT WILL THEN EXPAND OUTWARD WHEN COMPRESSED. F.50736 .250K. BOLT. .244 DIA. LENGTH TO SUIT SCUTTLE ARMATURE THICKNESS. RUBBER WASHERS FREE THICKNESS .200 DIA 1.00" OR LARGEST THAT CAN BE GOT IN SPACE AVAILABLE. | ||