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 Ltd. regarding examination results of a broken Alto Horn and diaphragm.
| Identifier | ExFiles\Box 167\5\ img026 | |
| Date | 21th January 1932 | |
| REGISTERED OFFICES & GENERAL DEP'TS GREAT KING STREET, BIRMINGHAM LONDON OFFICE & SHOWROOMS 319, REGENT STREET, W.1. X6115 LUCAS 'KING OF THE ROAD' LAMPS LUCAS-C.A.V.-ROTAX EQUIPMENT FOR CARS, LUCAS LIGHTING EQUIPMENT: FOR MOTOR CYCLES, LUCAS LIGHTING, LUCAS BATTERIES JOSEPH LUCAS LIMITED ELECTRICAL DEPARTMENT WELL STREET BIRMINGHAM TELEPHONE: NORTHERN 5201 (12 LINES) TELEGRAMS & CABLES 'LUCAS, BIRMINGHAM' SERVICE DEPÔTS 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 PORTLAND STREET, NORTH, NORTH CIRCULAR ROAD. EDINBURGH 27, STEVENSON RD, GORGIE. GLASGOW 227/229 ST GEORGES ROAD. LEEDS 64, ROSEVILLE ROAD. SERVICE DEPÔTS LIVERPOOL 45C/45E EDGE LANE. LONDON DORICREIGHT ROAD, ACTON VALE, W.3. LONDON 759, HIGH ROAD, ACTON VALE, W.3. LONDON 319, REGENT ST.{Capt. P. R. Strong}, W.1. SHOWROOMS & OFFICES. LONDON 155, MERTON ROAD, WIMBLEDON, S.W.19. MANCHESTER 291/293, DEANSGATE. SUPPLY DEPOT. MANCHESTER TALBOT RD, STRETFORD. NEWCASTLE-ON-TYNE 64/66, ST MARY'S PLACE. WHEN REPLYING PLEASE REFER TO Messrs. Rolls Royce.,Ltd., DERBY. X/R3 21st.January,1932. Dear Sirs, Your reference....Hs{Lord Ernest Hives - Chair}/Wst.4/AD. We thank you for your letter of the 19th instant.,addressed for the Attention of Mr. Thacker, with further reference to the discussions Mr. Cunningham had with you at your works recently in connection with the sample Alto pattern Electric Horn and the new Dual Arm Rack pattern Screen Wiper that you had on the 10,000 mile test car. We have returned the Alto Horn and also the two of the Altette pattern that Mr.Cunningham brought back. These have been marked for Mr.West's attention and we trust they have by now safely come to hand. As regards the Alto Horn as you know the piston was cracked across the diameter and the diaphragm was also broken. Our Laboratory have carefully examined the Horn and report on it as follows :- "Piston fracture is extremely rare and in this instance was probably due to undue stresses imposed during the rivetting up of the centre clamping. Only one other such instance has ever been known. . The diaphragm fracture is the result of a poor outer diaphragm clamping surface,and this trouble was removed some time ago by the fitting of Empire cloth washers on each side of the diaphragm." | ||