17th August 1951, Page 58
17th August 1951
Page 58

Page 58, 17th August 1951
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A Friction-driven Infinitely Variable Gear
INFINITELY variable gears of the I friction type have not proved very , 4uccessfu1 for large engines, but for • powers up to about 10 11.p. they will ' work : satisfactorily.......