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).
Letter from Joseph Lucas Limited regarding the 'Depress Beam Headlamp' and improvements to the P.100 lamp to prevent reflector discoloration.
| Identifier | ExFiles\Box 61a\2\ scan0098 | |
| Date | 23th July 1930 | |
| X/357. OFFICES & WORKS: GREAT KING ST.{Capt. P. R. Strong}, BIRMINGHAM. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY, INDIA OFFICE, G.P.O. AND LEADING RAILWAYS. "KING OF THE ROAD" LAMPS, HORNS, "CYCLEALITIES" "MOTOR-CYCLEALITIES", "MOTORALITIES", MAGNETOS, BATTERIES, ELECTRIC LIGHTING & STARTING SYSTEMS. Codes: A.B.C. 5TH & 6TH EDITNS & BENTLEYS 1ST & 2ND JOSEPH LUCAS LIMITED GREAT KING STREET BIRMINGHAM TELEPHONE: NORTHERN 2201 (10 LINES) TELEGRAMS & CABLES: "LUCAS, BIRMINGHAM" 23rd July 1930. SERVICE DEPÔTS LEFT COLUMN: BELFAST: 3/5, CALVIN STREET, MOUNT POTTINGER. BIRMINGHAM: GREAT HAMPTON STREET. BRIGHTON: OLD SHOREHAM RD., HOVE. BRISTOL: 345, BATH ROAD. CARDIFF: 54A, PENARTH ROAD. COVENTRY: PRIORY STREET. DUBLIN EDINBURGH: 32, STEVENSON RD., GORGIE. GLASGOW: 227/229, ST.{Capt. P. R. Strong} GEORGE'S ROAD. LEEDS: 64, ROSEVILLE ROAD. RIGHT COLUMN: LIVERPOOL: 450/456, EDGE LANE. LONDON: DORDRECHT ROAD, ACTON VALE, W.3. LONDON: 759, HIGH ROAD, LEYTON, E.10. LONDON: 224, SHAFTESBURY AVENUE, W.C.2. LONDON: 155, MERTON ROAD, WANDSWORTH, S.W.18. MANCHESTER: 291/293, DEANSGATE. MANCHESTER: TALBOT RD., STRETFORD. NEWCASTLE ON TYNE: 64/66, ST.{Capt. P. R. Strong} MARY'S PLACE. WHEN REPLYING PLEASE REFER TO RLN/JAP. E.{Mr Elliott - Chief Engineer} Fowler Clark, Esq., Messrs. Rolls-Royce, Ltd., D E R B Y. Your Ref:- EFC2/AD. Dear Sir, We have your letter of the 15th instant and have noted your remarks in regard to the "Depress Beam Headlamp". We are obtaining a model of this lamp and the writer will investigate personally the advantages you claim in its construction. With regard to our P.100 lamp we are aware, in some of the earlier models the reflectors became discoloured owing to the lamp not being absolutely water-tight. For some considerable time now, however, we have been coating all the interior parts, including the reflector, with a protective colourless lacquer which effectively prevents damage from accidental finger marks, or tarnishing. We have also improved the sealing of the front glass, and we are satisfied that the present lamp will not tarnish in service. | ||