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).
Bumper design using 'U' springs and semi-elliptic springs, accompanied by a sketch.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan165 | |
| Date | 14th June 1930 | |
| A.{Mr Adams} FROM E.{Mr Elliott - Chief Engineer} Copy to EG. Copy to HS.{Lord Ernest Hives - Chair} Copy to BH. re. BUMPERS. In reply to your memo. of the 12th inst., we have seen a design of bumper in which the front bar is carried by two 'U' springs from the dumb irons, and is then supported in a forward direction by two semi-elliptic springs clamped by their centres to the dumb irons, somewhat as shewn in sketch. This bumper appears to be practically immune from the danger of closing in of the front dumb irons from a central collision, as the foreshortening of the front bar should be accommodated by the twisting of the 'U' shaped carriers. Can you obtain something on these lines? E.{Mr Elliott - Chief Engineer} | ||