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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).
Modification to jaw clutches for the revised epicyclic third-speed gearbox.

Identifier  ExFiles\Box 15\5\  Scan165
Date  29th October 1930
  
BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design}

X 7310

DA{Bernard Day - Chassis Design}1/M29.10.30.

Copy to SG.{Arthur F. Sidgreaves - MD}
Copy to HS.{Lord Ernest Hives - Chair}

EPICYCLIC THIRD SPEED
GEARBOX REVISED.

X. 7310.
X. 5310.
X. 523.

Herewith we send N. sch. 3158. shewing a modification to the jaw clutches in the revised epicyclic 3rd. speed gearbox. The modified jaws shewn are those between the 2nd. and 3rd. speed, but they are also applicable with very slight variations to the jaws for the top and 3rd. speeds.
It is not intended that this modification should apply to any pieces you have already made or are well advanced for the trial epicyclic train.

DA.{Bernard Day - Chassis Design}
  
  


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