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 modification to a hinged filler cap to prevent petrol spillage.
| Identifier | ExFiles\Box 17\5\ Scan131 | |
| Date | 30th May 1932 guessed | |
| HINGED FILLER CAP MODIFICATION TO CURE PETROL SPILLING PII #20/5HP TWO .125" DIAM. AIR HOLES REQD. ON SCREW CAP TYPE OF FILLER LEATHER WASHER TAPERED IN SECTION TO MAKE PETROL TIGHT JOINT NO HOLE IN LEATHER WASHER TWO HOLES ONLY AND OPPOSITE TO AIR VENT PIPE A STUD HEAD WOULD BE PREFERABLE TO THE PRESENT DESIGN | ||