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 comparing four different designs of flexible spring shackles.
| Identifier | ExFiles\Box 128\1\ scan0118 | |
| Date | 31th October 1931 guessed | |
| FLEXIBLE SHACKLE ON 8 CYL STUTZ (DESCRIBED AS PATENT SHIMMY SHACKLE) REAR END OF FRONT SPRING. SLOTTED PLATE REGULATING AMOUNT OF TRAVEL. SPRING GUIDE. BOLT PASSING THRO' WEB. MORRIS ISIS FLEXIBLE SHACKLE AT REAR END OF SPRING. PRINCIPLE OF REAR END FLEXIBLE SHACKLE AS USED ON:- PACKARD MARMON, R.R. EXPTL. PRINCIPLE OF FRONT END FLEXIBLE SHACKLE AS USED ON BUICK CADILLAC DARRACQ STUDEBAKER. | ||