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).
Graph plotting machine tests of rolling resistance against inflation pressure for two different tyre types.
Identifier | ExFiles\Box 53\2\ Scan256 | |
Date | 1st October 1926 guessed | |
DUNLOP RUBBER Co. LTD., BIRMINGHAM. SKETCHED BY MILL APPROVED BY DEPARTMENT DATE RECORD NUMBER ROLLING RESISTANCE (lbs. wt. per ton) INFLATION PRESSURE (lbs. per sq. in.) 33x5 TYRE 33x6.75 TYRE MACHINE TESTS ON ROLLING RESISTANCE SPEED...50 m.p.h. FIG. 1. A.{Mr Adams} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} THORNTON LTD MANCHESTER. | ||