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).
On hotel letterhead describing the workings of a De Ram shock-damper.
| Identifier | ExFiles\Box 154\1\ scan0206 | |
| Date | 2nd December 1934 guessed | |
| HOTEL SYLVA PERGOLÈSE Av. de la {L. A. Archer} Grande-Armée — 3, RUE PERGOLÈSE — Près du Bois de Boulogne PARIS (xviᵉ) Téléphone : PASSY 38-12 — — 25-54 Registre du Commerce Seine N° 483.913 2. Yesterday I spent a very interesting time with De Ram being shown the De Ram shock-damper. This is composed of the most elaborate and beautifully machined parts unimaginable. The parts would make R.H.P. eyes water. All the load of this damper is by friction, but the load pushing the friction discs together is hydraulic. It is a type of damper which increases its load by the amplitude of the stroke and also by the velocity of the stroke. The damper is adjustable in any of its | ||