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 discussing P.100 headlamps with Lucas Graves Bulbs.
| Identifier | ExFiles\Box 61a\2\ scan0410 | |
| Date | 30th November 1934 | |
| HEAD 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. 86116. "KING OF THE ROAD" LAMPS, HORNS, "CYCLEALITIES", "MOTOR-CYCLEALITIES", "MOTORALITIES", MAGNETOS, BATTERIES, ELECTRIC LIGHTING & STARTING SYSTEMS. Codes: A.B.C. 5TH & 6TH "EDITs" & BENTLEY'S 1ST & 2ND JOSEPH LUCAS LIMITED GREAT KING STREET BIRMINGHAM 19 TELEPHONE: NORTHERN 5201 (12 LINES) TELEGRAMS & CABLES: "LUCAS, BIRMINGHAM" SERVICE DEPOTS BELFAST 3/5, CALVIN STREET, MOUNT POTTINGER. BIRMINGHAM, 18 GREAT HAMPTON STREET. BRIGHTON OLD SHOREHAM RD HOVE. BRISTOL 345, BATH ROAD. CARDIFF 54A, PENARTH ROAD. COVENTRY PRIORY STREET. DUBLIN PORTLAND STREET NORTH, NORTH CIRCULAR ROAD. EDINBURGH, 11 32, STEVENSON RD. GORGIE. GLASGOW 227/229 ST.{Capt. P. R. Strong} GEORGE'S ROAD. LEEDS 64, ROSEVILLE ROAD. SERVICE DEPOTS LIVERPOOL, 13 450/456, EDGE LANE. LONDON DORDRECHT ROAD, ACTON VALE, W.3. LONDON 759, HIGH ROAD, LEYTON, E.10 LONDON 319, REGENT ST.{Capt. P. R. Strong}, W.1. SHOWROOMS & OFFICES LONDON 155, MERTON ROAD, WANDSWORTH, S.W.18. MANCHESTER 291/293, DEANSGATE. SUPPLY DEPOT MANCHESTER TALBOT RD STRETFORD. NEWCASTLE-ON-TYNE, 2 64/66, ST MARY'S PLACE. WHEN REPLYING PLEASE REFER TO Messrs. Rolls-Royce Limited, DERBY. RIN/EH. 30th November. 1934. Dear Sirs, For the attention of Mr. West. P.100 Headlamps with Lucas Graves Bulbs. You will probably have now had an opportunity of trying out the above lamps and the object of this letter is to recapitulate the various points discussed between us in connection with this matter. Firstly, as to the lamps themselves, the reflectors do not appear as white as we should have liked, this being mainly due to the stray reflections in the reflector of the langite sealing ring and the poorly finished undersides of the tripod. This does not of course effect the beam in any way and it can easily be avoided in any future lamps. The reflectors as you know, were spun and HAND polished, and by neither method is it possible to obtain quite the perfection of finish at which we aim in our standard productions. With regard to the lighting, we thought the beam penetration in the normal position was excellent but the light distribution was certainly not the best compromise for use in this country and we believe a considerably more restful light would be obtained by Cont'd........ | ||