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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).
Alterations to an ignition distributor's insulated contact finger.

Identifier  ExFiles\Box 61b\2\  scan0071
Date  22th August 1927
  
X7690.
To RMC.
C. EFC.
BY/RD1/ML.22.8.27.
A

IGNITION DISTRIBUTOR - SEC:8120.
INSULATED CONTACT FINGER - "D" SCH.261.

In order to test a reversal of current in the make and break, we have produced D.{John DeLooze - Company Secretary} Sch. 261, which insulates the lever and earths the stationary point.

Working to a standard distributor L.O.P. D.70793 the following alterations are required:-

29

STANDARD PARTS NOT REQUIRED:-
D.71006.DC - Distributor Base. 1.
D.50429 - Clamping Plate. 1.
D.50794 - Screw Securing Spring Clamp. 1.
D.50431 - Spring Clip for Contact Finger. 1.
D.51397 - Rivet for D.50431. 1.
D.50430 - Pivot Pin for Contact Finger. 1.
D.50424 - Insulation Washer. 1.
K.2601.A - 5 B.A. C's'k Head Screw. 1.

ADDITIONAL STANDARD PARTS:-
+ G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 6022 - Washer. 1.
+ D.{John DeLooze - Company Secretary} 1142 - Washer. 1.
D.1152 - Washer. 1.
+ D.{John DeLooze - Company Secretary} 1687 - 3 B.A Nut. 1.
+ D.50065 - 5 B.A Spring Washer. 1.
D.50235 - Insulating Bush. 1.
++ D.{John DeLooze - Company Secretary} 50425 - Washer. 1.
D.51370 - Special Nut. 1.
D.51525 - Pivot Pin for Contact Finger. 1.
K.4404.A - 3 B.A Plain Washer. 2.
K.9005.A - 3 B.A Spring Washer. 1.
K.4304.A - 3 B.A Lock Nut. 1.
K.4302.A - 5 B.A Lock Nut. 1.

NEW PARTS:-
+ D.71399 - Terminal Stud. 1.
D.71398 - Distributor Base. 1.
D.71400 - Support - Contact Finger Spring. 1.
D.71401 - Insulation Washer. 2.
D.71402 - Insulating Washer - Pivot Pin. 1.
D.71403 - Insulating Bush - Pivot Pin. 1.
.010 Leathoroid 3.000 X .625. 1.

L.O.P. D.70936. Condenser. Sec:8130.
D.71404 - Cross Connector (Long to be fitted in place of:-
D.51354 - Cross Connector (Long)
+ To be nickel deposited.
Blueprints of new pieces herewith. Will you please put one set in hand.
BY/RD.
  
  


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