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 General Electric Co. Ltd. responding to a query about a U.3. Rectifying Valve.
| Identifier | ExFiles\Box 41\2\ Scan065 | |
| Date | 24th October 1927 | |
| CONTRACTORS TO H.M. ADMIRALTY, INDIA OFFICE, WAR OFFICE, G.P.O. AND THE LEADING HOME AND OVERSEAS RAILWAYS. REGISTERED TRADE MARK The General Electric Co Ltd MANUFACTURERS OF EVERYTHING ELECTRICAL. BIRMINGHAM Telephone: CENTRAL 7944/51 (8 LINES) Telegraphic Address: INSULATOR. BIRMINGHAM. Head Office: MAGNET HOUSE, KINGSWAY, LONDON, W.C.2 YOUR REF. OUR REF. W&V/HB{C. E. Harcombe}/466. TO ENSURE PROMPT ATTENTION PLEASE QUOTE ABOVE REFERENCE. WORKS WITTON, BIRMINGHAM, COVENTRY, MANCHESTER, HAMMERSMITH, WEMBLEY, LEMINGTON-ON-TYNE, ERITH, SOUTHAMPTON, LONDON. BRANCHES ABERDEEN, BELFAST, BIRMINGHAM, BRISTOL, CARDIFF, CORK, DUBLIN, DUNDEE, EDINBURGH, GLASGOW, HULL, IPSWICH, LEEDS, LIVERPOOL, MANCHESTER, NEWCASTLE-ON-TYNE, NOTTINGHAM, SHEFFIELD, SOUTHAMPTON, SWANSEA. OVERSEAS BRANCHES AUSTRALASIA SYDNEY, MELBOURNE, PERTH, ADELAIDE, NEWCASTLE, AUCKLAND, DUNEDIN & WELLINGTON. (BRANCH AGENCIES AT Brisbane, Hobart & Suva) CHINA & MANCHURIA, SHANGHAI, HONG KONG, AND, DAIREN. (BRANCH AGENCIES AT Hankow & Tientsin.) FEDERATED MALAY STATES & STRAITS SETTLEMENTS. SINGAPORE FRANCE. PARIS. INDIA. CALCUTTA, BOMBAY, MADRAS & LAHORE. SOUTH AFRICA. JOHANNESBURG, CAPE TOWN, DURBAN & PORT ELIZABETH (BRANCH AGENCIES at Bulawayo,Salisbury & East London) SOUTH AMERICA. BUENOS AIRES. (BRANCH AGENCY AT Montevideo.) AGENCIES IN ALL OTHER PRINCIPAL TOWNS THROUGHOUT THE WORLD. Magnet House, 34/35. Moor Street, BIRMINGHAM. 24th. Oct. 27. Messrs. Rolls Royce Ltd., DERBY. FOR ATTENTION OF MR. H.{Arthur M. Hanbury - Head Complaints} ROYCE LTD. Dear Sir, As we have now received a report from our Works on the U.3. Rectifying Valve returned here for report on your advice note WG{Mr Gill - Financial Director}/F,17959 of the 7th. inst., we have pleasure in replying to your letters of the 7th. and 13th. inst. ROY.{Sir Henry Royce}5/MG1. To make the matter clear we are replying in the order requested. (a) We regret it is not possible for us to express an opinion as to whether the Valve sent you to our advice note BA.186724 of the 11st. inst. will stand up better to the high tension applied between plate and filament, than the one under consideration, as obviously we can only speak of the Valve from point of view of the purpose for which it was designed. (b) We think that a larger form of rectifier than the U.3. would suit better the tests you have in mind, for example our B.H.T.No.2. particulars of which you have in your possession. (c) This is answered by (b). Perhaps a few particulars of our examination of the U.3. Valve you returned would interest you. [Handwritten Signature] EFC Please Sign [Handwritten Note Top Centre] Y3646 [Stamps] RECEIVED 25 OCT 1927 [Footer] ENCLOSURES: TO ENSURE PROMPT ATTENTION MATTERS REFERRING TO VARIOUS DEPARTMENTS SHOULD BE WRITTEN ON SEPARATE SHEETS. | ||