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 a foot switch fault causing a 'black-out' on a Phantom III chassis.
| Identifier | ExFiles\Box 168a\2\ img336 | |
| Date | 14th July 1937 | |
| JOSEPH LUCAS LIMITED GREAT KING STREET BIRMINGHAM 19 TELEPHONE: NORTHERN 5201 (12 LINES) TELEGRAMS & CABLES: 'LUCAS, BIRMINGHAM' 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. SERVICE DEPOTS: BELFAST - 3/9 CALDER STREET, MOUNT POTTINGER BIRMINGHAM, 15 - GREAT HAMPTON STREET BRIGHTON, 4 - 24/25, BOND STREET BRISTOL - 248 BATH ROAD CARDIFF - 54A, PENARTH ROAD COVENTRY - PRIORY STREET DUBLIN - PORTLAND STREET NORTH, NORTH CIRCULAR ROAD EDINBURGH, 3 - 46/50 FOUNTAINBRIDGE GLASGOW - 46/58, ST.{Capt. P. R. Strong} GEORGE'S ROAD LEEDS - 94, ROSEVILLE ROAD "KING OF THE ROAD" LAMPS, HORNS, "CYCLEALITIES" "MOTOR-CYCLEALITIES" "MOTORALITIES" MAGNETOS, BATTERIES, ELECTRIC LIGHTING & STARTING SYSTEMS. Codes: A.B.C. 5th & 6th EDNS & BENTLEY'S 1st & 2nd SERVICE DEPOTS: LIVERPOOL, 13 - 118/120 BOLD STREET LONDON - ACTON W.3. LONDON - 15, REGENT ST.{Capt. P. R. Strong}, S.W.1. LONDON - 381, EUSTON ROAD, N.W.1. MANCHESTER 3 - 271/273 DEANSGATE NEWCASTLE-ON-TYNE 2 - ST.{Capt. P. R. Strong} MARY'S PLACE 6139 Messrs.Rolls-Royce,Limited, D E R B Y. WHEN REPLYING PLEASE REFER TO X/ LGT9 14th.July,1937. For the attention of Mr.West. Dear Sirs, We acknowledge your letter of the 13th.instant, your reference Rm{William Robotham - Chief Engineer}/Wst.9/AP, in which you state you have now had a written report in connection with the FS{F. Steele}22-N Foot Switch which failed on the Phantom III Chassis now running in France, and we note that the report states the off-side lamp 'blacks-out' completely with dimming, and that you believe this is due to the contact plunger not overlapping the contacts when dimming. Are we to assume that this is just a momentary 'black-out' as the change takes place from the "bright" to the "dim" if the switch is operated very slowly and deliberately, and why should it be confined to the off-side lamp? We think you will remember there was a switch some time back which gave both bright and dim filaments on at the same time, and we made certain modifications to the plunger to overcome this. However, we are about to build up six further samples switches for you as arranged, and we shall introduce a test in our Laboratory to check for this fault to see if we can re-produce the same conditions here. If you should have the faulty switch returned to you, we shall be pleased to receive it here at your earliest convenience, and also any further data in connection with a written report, which may be useful to us in our investigations. Yours faithfully, JOSEPH LUCAS LIMITED, L. S. Palmer | ||