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).
Accompanying a blueprint for an offset contact breaker rocker for a battery ignition system.

Identifier  ExFiles\Box 61b\1\  scan0026
Date  22th March 1927
  
[strikethrough]E.{Mr Elliott - Chief Engineer}[/strikethrough]
[strikethrough]c. to Hs.{Lord Ernest Hives - Chair}[/strikethrough]
[strikethrough]c. to RPC.[/strikethrough]
X4041
BY/Cgh{W Clough}21/G.22.3.27.

BATTERY IGNITION.

X8690

We send you herewith blueprint of D.Sch. 257 showing the radial movement of the centre of the radius of the block on the offset contact breaker rocker, as per LeC. 2380, from which it will be seen that although the average rate of lift is greater than with our present standard rocker the speed at the point of break does not appear to be any greater.

We have, however, instructed the offset rocker, but we thought this diagram might be of interest to you.

BY/Cgh.{W Clough}
  
  


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