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 proposal for the Lucas Mellotone Horn.
| Identifier | ExFiles\Box 171\5\ img060 | |
| Date | 13th September 1938 | |
| BENTLEY STANDARDISATION OF PARTS COMPLETED 24.11.38. Description: LUCAS MELLOTONE HORN. Purpose: The existing H.F. horns are outside the limits recommended by the S.M.M.T. with respect to volume of sound. The Mellotone are approx. correct. Brief Report and Remarks: A fair percentage have already been fitted to Bentley cars at the customers request. Raymond Mays had a pair of Mellotone fitted to B.144.LS in Nov. 1937. No complaints to date. Lucas's will take back existing stock of H.F. horns thus no scrap will be incurred in the change over. A choice of loud or soft tone may be obtained by the fitting of a simple switch on the instrument board. When recommended for Introduction: 61 in 'M' series. Report References: By.{R.W. Bailey - Chief Engineer} Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Abmnt. Old Parts: Material: 12s 10d. Labour: 4s 9d. Burden: 16s 2d. Total: £1 15s 9d. New Parts: Material: 13s 1d. Labour: 5s 11d. Burden: 19s 8d. Total: £1 14s 12d. Increase in Cost: £0.16.7. Q/Ab. 3.11.38. Cost of Tools: £29.0.0. Production Position and Comments: Lucas Mellotone Horns to conform to S.M.M.T. limits regarding sound volume can be introduced at the 61st. chassis in 'M' series by scrapping existing horn brackets etc. value £19. There will be no Horns scrapped since Lucas have agreed to take back existing stock of H.F. horns. Introduction of Mellotone horns will involve a tool cost of £29.0.0d. and there will be an increase in factory cost of 16/7d. per chassis. Authorisation to Proceed. Introduce on the 61 Chassis in M Series. Signature: Sg.{Arthur F. Sidgreaves - MD} FG, Date: 22.11.38. Signature: Hs.{Lord Ernest Hives - Chair} WG{Mr Gill - Financial Director}, Date: 22.11.38. | ||