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).
Technical drawing for a friction lining.

Identifier  ExFiles\Box 141\3\  scan0099
Date  14th May 1930
  
RR 885 (2)H(20266 3-12-31)B.J.H.
No. OPERATION MACHINE TOOL TOOL No.
LINING BOUGHT OUT.
(NOT GROOVED OR DRILLED)
(SIM TO G 77775)
1 GROOVE FITTERS DIE HB{C. E. Harcombe} 5714
2 DRILL IN POSITION
14939 G
15057 G
16360 G
THESE GROOVES TO BE PRESSED IN AT RR WORKS
IN FORMING THESE GROOVES THE FABRIC MUST BE INDENTED BY A SPECIAL TOOL & NOT CUT
TO BE TREATED WITH C.G.G. DRESSING BY MAKERS
REPLACE ALL COPIES TO:-
EXP. PATT.
WORKS FORGE
T.O. S.R.
D.O. R.{Sir Henry Royce}
R.D. AMERICA
T.D. COST
DRAWN NBS
TRACED R.A.
CHECKED AWC
APPROVED
LIMITS O.K.
DATE 14.5.30
USED ON No. OFF SECTION
40/50 2 6180
SCALE 1/1
HEAT TREAT
BRINELL STANTON
TITLE FRICTION LINING
MATERIAL COTTON A
SPECN Nº
MACHINE ALL OVER OR WHERE MARKED THUS
*27775
OPERATION G 77775 MACHINE TOOL TOOL No.
C 78524
DEPTH OF GROOVE
16 HOLES .0937 DIA
EQUALLY SPACED IN TWO'S AS
SHEWN, TO BE PIERCED
WHEN IN POSITION ON
PRESSURE PLATE WITH
AN AWL HAVING A
NEEDLE POINT.
STAPLES TO BE SUNK
BELOW THE FACE OF
THE FABRIC .035 MIN
TO .045 MAX
THIS FACE TO BE SQUARE
WHEN IN POSITION ON
PRESSURE PLATE
C 78524
Dimensions and Tolerances:
5.850 DIA
.375 CTS{C. Trot Salt - Carburation} +5 -5
45°
5.250 DIA CTS{C. Trot Salt - Carburation} +5 -5
4.525 DIA +0 +.10
.107 +.10
.187 +.10
  
  


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