Rolls-Royce Archives
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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).
Experimental trial for a new commutator-type 'make and break' ignition distributor.

Identifier  ExFiles\Box 168\3\  img001
Date  2nd November 1938
  
6119.
DA.{Bernard Day - Chassis Design}2/G.2.11.38.
C. Pn.{Mr Northey}
CHILDS
IGNITION DISTRIBUTOR. See me GM

Herewith D.CD.986 being a design for a commutator type of make and break.

This arrangement is for experimental trial only, to ascertain defects, if any, as compared with the orthodox contact lever type of breaker.

We have shown an earthing brush fitted to ensure commutator being connected electrically to earth without relying on bearings which may or may not be good connectors. We should like tests to be made with and without this brush.

On sheet 2 of this scheme, we have shown one method of fitting this breaker, made at RR, to an existing Lucas governor unit.

DA.{Bernard Day - Chassis Design}
  
  


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