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).
Blueprint with a cross-section view and manufacturing instructions for a component with ring grooves, likely a piston.

Identifier  ExFiles\Box 173\3\  img034
Date  2nd June 1934 guessed
  
SIDES OF RING GROOVES MUST BE SMOOTH, FLAT, & RUN TRUE WITH SKIRT O.D. - THE BOTTOM OF GROOVES MUST BE SQUARE WITH THE SIDES
.1255/.1265
.125/.126
.1875/.1885
GRIND CHAMFER
1/16 SAW - 2 SLOTS BEFORE FINISH GRINDING
BREAK CORNER
3.233/3.237 CAM GRIND
BREAK CORNER 1/64 MAX. R.{Sir Henry Royce}
DIA.
O.DIA.
7/32
3/64
15/32
5/32
1/2
5/16
23/32
7/8
21/32
2.755/2.765
  
  


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