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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).
Cover memo listing original engineering tracings for various engine components.

Identifier  ExFiles\Box 143\2\  scan0066
Date  20th December 1940
  
SECRET.

7

To Rm.{William Robotham - Chief Engineer} from Ev.{Ivan Evernden - coachwork} 1204
c. Rm{William Robotham - Chief Engineer}/HH.
c. Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames}

Ev.{Ivan Evernden - coachwork}5/SW.20.12.40.

re Original Tracings.

Attached to the copy of this memo for Rm{William Robotham - Chief Engineer}/HH.
are the following originals :-

PL.403 - Masked Inlet Valve - B.60
PL.400 - Camshaft, Analysis of Slow Running.
PL.376 - Capacities & Tax.
PL.367 - Sketch of Mercedes-Benz Dry liner.
PL.366 - Sketch of Junker's Wet Cylinder liner.
PL.362 - Preliminary Arrangement of W.30 Engine - 1/4 scale.
PL.331 - 3 cylinder unit 635 cc.
PL.278 - Improved Breathing Aspin Valve.
PL.276 - Two-stroke Valve Opening Areas.
PL.275 - Valve Opening Areas - Optimum. Aspin v B.60.
PL.252 - Better Breathing Aspin Valve.
PL.249 - Comparison of Valve Opening Areas. Aspin & B.60.
PL.124 - Projects of Sheet Metal Rocker Cover - B.60.
PL.195 - Project of Starter Motor. B.80 Marine.
PL.18 - Vauxhall 12 Crankshaft.
PL.11 - Hillman 10 Engine.

These drawings have not been issued previously,
so will you please issue the usual prints and file the
originals. No detailing is called for.

Ev.{Ivan Evernden - coachwork}

Originals to Rm{William Robotham - Chief Engineer}/HH.
Prints to Ev.{Ivan Evernden - coachwork} Rm{William Robotham - Chief Engineer}/HH, Ashby.
  
  


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