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).
Sectional diagram and explanation of a shock absorber, including a note on oil expansion.
| Identifier | ExFiles\Box 178\1\ img165 | |
| Date | 22th June 1926 | |
| - 11 - Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/T22.6.26. (ii) Though special ball valves are employed to keep the shock damper full, these are non-return and so no allowance is made for the expansion of the oil due to rise in temp. when the shock absorber is working. The result is that this expansion forces oil out through the gland however well this may be made. EXPLANATION OF SECTIONAL DIAGRAM. B: The walls of the compression chamber. R: The recuperator chamber. C: The partition dividing the compression chamber from the recuperator. T: The lever arm secured by N: its hexagon locking nut. P: The moving hollow spindle to which the lever arm is connected and H: the paddles attached to it. G: The fixed partition. Y: The orifice in "G" through which the liquid passes freely to the reverse side on the compression of the car springs, but on their recoil, the oil passage is blocked by Z: a ball constituting a non-return valve. I: The regulating rod, and "D" its oval end enabling most minute adjustment of size of aperture d'. M: The slot enabling "I" to be moved by a turnscrew. D: The oval end of the regulating rod "I", the movement of which determines the size of d', the aperture in the moving spindle "P" through which the liquid is forced on the recoil of the car springs. F.{Mr Friese} The patent stuffing box with E.{Mr Elliott - Chief Engineer} its aperture through which the liquid passing from the compression chamber to lubricate the spindle "P" is trapped in the recuperator chamber "R". S. The aperture in "C" forming the non return ball valve through which such liquid is instantly replaced into the compression chamber "B" thus preventing the entrance of any air, and ensuring unchangeable efficiency. H.{Arthur M. Hanbury - Head Complaints} The boss on which "P" is supported. | ||