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 the specifications for a 'Spring On' Type Cap for a disc wheel.
| Identifier | ExFiles\Box 159\1\ scan0307 | |
| Date | 21th January 1938 | |
| DISC WHEEL CDS. 1132 PROFILE OF CAP MUST BLEND WITH PROFILE OF WHEEL. ENLARGED SECTION OF BEAD MODIFICATIONS. 25° 65° 20° 3/8 RAD 18 S.W.G. (.048") 1/8 RAD. 5/32 RAD 1/8 RAD. 1/4 RAD. 30° 4.531" DIA. 3.843" DIA. 3.125" DIA. .547" 1.687" 8.375" DIA. MINIMUM. 8.625" DIA. CRS. SCALE:- FULL SIZE DRAWN: H.W. Richards TRACED CHECKED DATE: 21 JAN 1938 D.{John DeLooze - Company Secretary} M.{Mr Moon / Mr Moore} C. TITLE:- 'SPRING ON' TYPE CAP ISSUE No MODIFICATION A.M. APP DATE DIMENSIONS NOT LIMITED ARE SUBJECT TO A TOLERANCE OF ±.005" COMPONENTS & MATERIALS:- SPEC. REF. DUNLOP RIM & WHEEL CO., LTD., FOLESHILL, COVENTRY. DRG. No CDO. 2633. | ||