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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).
Instructions for winding coils for an Actuator Box and Automatic Switch.

Identifier  ExFiles\Box 64\3\  scan0189
Date  5th November 1924
  
X 8650
C. EFC.
BY/RD4/ML5.11.24.

X.8650 - ACTUATOR BOX AND AUTOMATIC SWITCH. E.A.C.11.

ACTUATOR BOX.

Will you please put in hand one Actuator Box Coil wound with 17 S.W.G. (.056) D.C.C. Copper Wire, 140 turns to be used in conjunction with the heavier Teaser Winding.

AUTOMATIC SWITCH.

As the Auxiliary Coil on the Automatic Switch is not strong enough to hold on the contacts, will you please put in hand one coil having a smaller size of heavy winding (print of which we send you herewith - D.70868/9) and the upper half of the coil wound with .018 (26 S.W.G) D.C.C. Copper Wire, 204 turns.

Actuator
The/coil should be wound in 4 layers to bring the ends out at the top.

Will you please put these in hand as quickly as possible.

BY/RD.
NG
  
  


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