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 showing a semi-isolation bolt assembly using rubber components.

Identifier  ExFiles\Box 17\3\  Scan209
Date  27th March 1928 guessed
  
SEMI ISOLATION 117 M.C.
BOLT CENTRES AS ON F.4735.
STRIP OF RUBBER RUNNING RIGHT ROUND TOP OF THE DASH IF AVAILABLE.
OTHERWISE CONTINUOUS PIECES CUT TO FIT OFF CAR BUFFERS.
THESE ARE THE REQUIRED RUBBER HARDNESS.
THIS MAY ADVANTAGEOUSLY* BE OF VERY HARD RUBBER
F.50736
.250K BOLT. .244 DIA.
LENGTH TO SUIT SCUTTLE ARMATURE THICKNESS.
THICKNESS A WHEN RUBBER TIGHTLY COMPRESSED, EQUAL TO PRESENT GAP BETWEEN SCUTTLE & DASH.
F.9056
RUBBER BUSH. MAKE AN EASY FIT WHEN FREE. IT WILL THEN EXPAND OUTWARD WHEN COMPRESSED.
RUBBER WASHERS. FREE THICKNESS .200 DIA. 1.00" OR LARGEST THAT CAN BE GOT IN SPACE AVAILABLE.
1.075
.600
  
  


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