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).
The use and performance of 'Graphol' on exhaust joints and butterfly valves.
| Identifier | ExFiles\Box 140\3\ scan0018 | |
| Date | 28th May 1926 | |
| BY.{R.W. Bailey - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} G-Mx.{John H Maddocks - Chief Proving Officer} Ho. 45269 EP{G. Eric Platford - Chief Quality Engineer}6/H28.5.26. re. 'Graphol' for Exhaust Joints and Exhaust Butterfly Valves. The above was used on the butterfly valve trunnion bearings on a car on test, 43-TC, during a run of about 250 miles by Mr. Wyer, who reports as follows:- "We treated the exhaust butterfly with the Graphol sample 4 days ago, and did not get any squeak until this morning, which is better than any other dope we have in use in the shop; does not smoke or smell, so unlike the graphite compound we use, but would suggest that more graphite be used in the solution, as it is very thin, perhaps because it is recommended for releasing tight nuts or bolts, and it would want to be thin for that purpose." HS{Lord Ernest Hives - Chair} EP.{G. Eric Platford - Chief Quality Engineer} ( RECEIVED ) STAMP: 28 MAY 1926 | ||