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).
Particulars for three types of shutter thermostats built and loaded in the U.S.A.
| Identifier | ExFiles\Box 77\4\ scan0314 | |
| Date | 1st February 1923 guessed | |
| Hs.{Lord Ernest Hives - Chair} EHC. X.4240. PARTICULARS OF SHUTTER THERMOSTATS WHICH HAVE BEEN BUILT UP AND LOADED IN U.S.A. No. 1. Loaded with Acetone. Commences to open at 166ºF.{Mr Friese} } Fully opened " 171ºF.{Mr Friese} } Stroke .430 Load 35 lbs. No. 2. Loaded with methyl-alcohol (C.P.) Commences to open at 177ºF.{Mr Friese} } Fully opened " 183ºF.{Mr Friese} } Stroke .430 Load 35 lbs. No. 3. Loaded with Dematured alcohol. Commences to open at 188ºF.{Mr Friese} } Fully open " 198ºF.{Mr Friese} } Stroke .430 Load 35 lbs. RHC.{R. H. Coverley - Production Engineer} | ||