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 from the Rubber Shock Insulator Co. illustrating the benefits of using rubber shackles on a car.
| Identifier | ExFiles\Box 28\1\ Scan028 | |
| Date | 3rd February 1923 guessed | |
| THE RUBBER SHACKLE CAR. A car equipped with Rubber Shackles Means 12 Less oiling points Absence of Shackle noise Less Chassis Vibration Greater Tire mileage. RUBBER SHOCK INSULATOR CO. 252 WEST 64th ST.{Capt. P. R. Strong} NEW YORK CITY. T.T.Y. | ||