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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).
Manufacturing process and design of road springs.

Identifier  ExFiles\Box 16\7\  Scan115
Date  20th October 1928
  
BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce}
DA.{Bernard Day - Chassis Design}
HS.{Lord Ernest Hives - Chair}
c. to BJ. Wor.{Arthur Wormald - General Works Manager} PN.{Mr Northey} CWB.

47410

R1/M20.10.28.

ROAD SPRINGS. X.7410 X.8410

I quite agree that we must stop hollow rolling of spring plates. This is not our work, but is done to make it easy to give a good looking spring, though it is a fake, and also the springs should always be in gaiters.

I quite agree that the surface should not be made defective by stamping on names and numbers unless a place and method can be found that is harmless.

One thinks it possible to get a much truer surface if we hardened between blocks like a circular saw (RR. idea)

All the plates of one thickness should have one curve if the curve were true.

I am sure it would be wrong to cut the [sketch of a pointed end] ends - they should be [sketch of a square end with rounded corners] i.e. square, with rounded corners, and properly tampered [sketch of a tapered thickness end] in thickness. This gives the largest surface for the load at the ends of the plates.

The plates could easily be held on a magnetic chuck and truly ground and polished. It would need some special plant, but the process could be made inexpensive, and the surface nearly perfect - (RR. idea.)

R.{Sir Henry Royce}
  
  


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