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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).
Summary of experimental work and various design schemes for steering columns and their components.

Identifier  ExFiles\Box 67\3\  scan0129
Date  24th April 1925
  
X8430
HS.{Lord Ernest Hives - Chair}
RHC{R. H. Coverley - Production Engineer}
C.B.

BY7/H.{Arthur M. Hanbury - Head Complaints} 24.4.25.

E.A.C. STEERING.
------------

In order to prevent any misunderstanding, as so much experimental work has been done on the steering columns, I wish to summarise the matter so that everybody will thoroughly appreciate the exact position at the moment.

1. In the first place, we have roughly 150 sets of the original column on order with plain bearings and sand cast boxes. The lead of the screw in this connection is 1.125" and the number of threads is four.

The type of rocking lever is the one with a flange on the centre to which the two arms carrying the nut bolt up. A few parts were made to the original scheme using a serrated rocking lever, but these are all being replaced.

2. The Experimental Dept. should try out a new scheme for producing the bottom flange on the pressing into which the stationary tube of the steering column brazes. If this scheme appears to be sound and workable, we would like to bring this in with CJ's consent as soon as the Experimental people are satisfied with same.

3. The following experiments in regard to lead screws and nuts are in hand:-

a/- Phosphor bronze 20 HP. type nut to be used with 1 1/8 lead worm with four starts,

b/- Ditto. 1" lead, four starts.

c/- Ditto. .9375 lead, four starts.

4. We have just received from Da.{Bernard Day - Chassis Design} a new design, No. N.Sch.1981. This scheme is complete in itself and involves the use of a 20 HP. phosphor bronze nut whitemetalled on the threads, with new sand cast box to accomodate a roller bearing scheme for the rocking shaft itself. The rocking shaft and the housing for the roller bearings on same

Contd.
  
  


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