Technical blueprint drawing of a valve elbow adapter.
| Identifier | ExFiles\Box 27\1\ Scan120 | |
| Date | 2nd June 1929 | |
| B-1920 -PATENTS PENDING- UNLESS OTHERWISE SPECIFIED TOLERANCE OF ALL DIMENSIONS IS PLUS OR MINUS .010" PRINTED ON VR {E. S. Voller - Orders} PAPER V&T CO. INC. N.Y. Drop Lug Drill .0522 +0 -1/2 Ground valve without fabric A12529 BIJUR LUBRICATING CORP. N.Y. VALVE ELBOW ADAPTER DR. DT DT. 2-6-29 CK {Mr Clark} 'D. {John DeLooze - Company Secretary} DT B-1920 SCALE - 2:1 | ||
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).