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).
Page describing and comparing friction-based shock dampers, such as the 'Hartford' and 'Gabriel Snubber' types.
| Identifier | ExFiles\Box 28\1\ Scan084 | |
| Date | 22th June 1926 | |
| -7- Hs{Lord Ernest Hives - Chair}/RML/T22.6.26. the double acting "Hartford" type, their main attribute is that their connection to the axle can be a fabric strap. This eliminates a number of potential sources of wear and noise and in addition lubricating points. Considerable virtue is claimed in advertisements for the progressive action of "Snubbers". As will be seen from the sketch of the "Gabriel", the resistance to the spring's downward movement becomes less as the spring deflection increases. This is exactly the opposite to what is desirable, as relatively less damping is obtained over large bumps than over small ones. "Snubbers" can be produced cheaply and their fitting is simple, hence their great popularity on light and mass-produced cars. Other types on the same principle are the Armstrong and Watson. GABRIEL. V.{VIENNA} HYDRAULIC SHOCK DAMPERS. (a) Fundamental difference between types. These are employed to all intents and purposes for exactly the same object as the friction vibration dampers previously described, i.e. to restrain the free movement of the springs. They can be separated into two groups :- Contd. | ||