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).
Graph of spring compression and recoil, also showing the effect of an oil spring under forced vibration.
| Identifier | ExFiles\Box 46\1\ Scan134 | |
| Date | 3rd June 1919 guessed | |
| [Y-Axis] Compression of Spring in inches [X-Axis] Flexibility of Spring in lbs pr inch O.A.A.O. Compression and recoil Graph of Spring 400 lbs. pr in flex 4" of def. O.B.B.O. O.C.C.O. Graph of Road Spring 2" def. combined with that of Oil Spring period 130 p.m. Graph X O'A'A'O.{Mr Oldham} when " 3/4" O'A'B'O.{Mr Oldham} " " 1/2" O'A'C'O.{Mr Oldham} " under forced vibration or sudden shock [Stamp] The Heitman Co. 52 Vanderbilt Ave. N.Y. City. [Right Edge Vertical Text] KEUFFEL & ESSER CO., NEW YORK, NO. 301 C. | ||