Leaflet for the Rolph Patent Automatic Traffic Warner, shown fitted to a Wolseley Chassis.
| Identifier | ExFiles\Box 43\3\ Scan005 | |
| Date | 11th November 1921 guessed | |
| X919 - 3935 HS {Lord Ernest Hives - Chair} /W EFC {E. Fowler Clarke - Electrical Engineer} UNIVERSAL PROTECTION IS ASSURED BY THE Rolph Patent Automatic Traffic Warner Patented in the United Kingdom and in Foreign Countries . . . All Designs Registered LN-4967 SLOW Rolph Automatic Traffic Warner fitted to Wolseley Chassis. Sole Manufacturers : SIEBE, GORMAN & CO., LTD. 187, Westminster Bridge Road . . . LONDON, S.E.1. Telegrams : "SIEBE, LAMB., LONDON." Telephone : Hop 3401 and 3402. Cables : "SIEBE, LONDON." Codes used : A.1., A.B.C. (4th and 5th Ed. {J. L. Edwards} ), Western Union, Lieber, Marconi, Bentley's, Engineering and Private. | ||
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).