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 mechanism of a damped ammeter.
| Identifier | ExFiles\Box 168\5\ img262 | |
| Date | 16th September 1933 | |
| MOTOR EXHIBITION OCT 12-21 OUR STAND No. 446 Gallery & WORKS BIRMINGHAM ADMIRALTY INDIA OFFICE RAILWAYS TRADE MARK 86132 JOSEPH LUCAS LIMITED GREAT KING STREET BIRMINGHAM 19 TELEPHONE: NORTHERN 5201 (12 LINES) TELEGRAMS & CABLES: 'LUCAS, BIRMINGHAM' KING OF THE ROAD LAMPS, HORNS, CYCLEALITIES, MOTOR CYCLEALITIES, MOTORALITIES, MAGNETOS, BATTERIES, ELECTRIC LIGHTING & STARTING SYSTEMS Codes: A B C 5th & 6th EDIT. & BENTLEY'S 1st & 2nd SERVICE DEPOTS LIVERPOOL LONDON LONDON LONDON MANCHESTER NEWCASTLE-ON-TYNE WHEN REPLYING PLEASE REFER TO Messrs. Rolls Royce Limited, DERBY. WST X/LGT7. 16th September 1933. Dear Sirs, We acknowledge your letter of the 1st instant, your reference:-Hs{Lord Ernest Hives - Chair}/Wst.3/MA., in connection with the damped ammeter recently submitted to you. We have pleasure in attaching herewith a rough sketch showing the action of this damped ammeter, the damping consists of a separately pivoted mass with a particular inertia which is coupled to the armature by means of a fork and an armature extension in such a manner that the damper and armature rotate in opposite directions. We trust that this sketch and description above of the mechanism will be satisfactory to you, and await your instructions for the future. Assuring you always of our best attention to your requirements. Yours faithfully, JOSEPH LUCAS LIMITED. [Signature] Technical Sales Department. | ||