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).
Standardisation of a soft copper radiator cap washer to replace the existing rubber washer.
| Identifier | ExFiles\Box 171\2\ img078 | |
| Date | 23th September 1932 | |
| RR 755 (10M) (30405. 21-4-32) BM. 3/6382. 4. COMPLETED 16.1.33. STANDARDISATION of CHASSIS PARTS. Description of Parts: SOFT COPPER WASHER EXPANDED INTO EXISTING RADIATOR CAP TO REPLACE RUBBER WASHER. Origin: The rubber washer swells and in some cases prevents the operation of the pressure valve. In such a state the radiator is liable to burst when the water boils. [Right hand side boxes] Date: 23.9.32. X No. 5250 / 7250 Drawing No: E.3420 Part List [Test Report Section] Experimental Test Report. | Road Test Report. Copper washers are now fitted to 19-EX, 20-EX, 22-EX, 25-EX, cars. In all cases the caps appear to be satisfactory. | No water leaks on to the top of the radiator under road conditions. [Large purple stamp over test report section: 20/25 H.P. CHASSIS] [Cost Section] Weight of Old Part. £ --- Cost of Old Part. £ --- Weight of New Part. £ --- Cost of New Part. £ --- Difference per Car. £ Negligible. Signature from Cost Dept. that above is correct /Rb.{R. Bowen}9.1.33.G.11.1.33. Cost of Parts in Works which will be scrapped if commenced on :- Series.......£....... Series.......£....... Series.......£....... [Approval Table] INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 13.1.33. | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 1/10/32 | Agreed BKR WOR.{Arthur Wormald - General Works Manager} | 25.9.32. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 26.9.32. | Agreed C. RG.{Mr Rowledge} | 26.9.32. | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 26.9.32. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 28.9.32. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 26.9.32. | Agreed EP{G. Eric Platford - Chief Quality Engineer} & MX.{John H Maddocks - Chief Proving Officer} E.{Mr Elliott - Chief Engineer} | | Agreed AE. PN.{Mr Northey} | 3.10.32. | Agreed PN.{Mr Northey} Tests should be continued to make sure that radiator caps do not shake loose under worst conditions on road due to elasticity in washer Hs.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} | ||