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).
Design proposal for an 'Hour Glass' type of rear spring roller.
| Identifier | ExFiles\Box 43\2\ Scan048 | |
| Date | 27th July 1927 | |
| PROPOSAL FOR "HOUR GLASS" TYPE OF REAR SPRING ROLLER IN CASE OF HEAVY SIDE BLOWS SPRING EXPECTED TO RISE AGAINST STOP RADIUS OF PLATE ABOUT 95% OF RADIUS OF ROLLER by July 27 | ||