Blueprint for a moulded Lockheed cup component with dimensions and notes.
| Identifier | ExFiles\Box 56\1\ Scan218 | |
| Date | 23th September 1932 guessed | |
| ALL FLASH MUST BE REMOVED FROM EDGE OF CUP TO BE MOULDED IN BLOCK LETTERS 1/8" HIGH PROJECTING 1/64" PLACE MANUFACTURER'S INITIALS HERE 0 TO 1/64" RAD: SHARP CORNERS DESIRED LOCKHEED APCọ PAT Nọ 236584 ENG 231/4 3/16 RAD PLACE MOULD Nọ HERE. NOTE SMOOTH FINISH ALL OVER CUP TO BE FREE FROM FOREIGN SUBSTANCES & MOULDING IMPERFECTIONS INSIDE & OUTSIDE DIAMETERS TO BE CONCENTRIC TO WITHIN .010" .150 .140 .098 .088 1/16 RAD B 1.245" DIA 1.235" 1.308" DIA 1.298" 30° .040" .030" FLAT 3/32" 5/16" +.015" -.015" A | ||
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).