9th March 1940, Page 40
9th March 1940
Page 40
Page 40, 9th March 1940
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Sleeve Valve For Better Scavenging
permit a single-sleeve-valve four stroke engine to be supercharged and scavenged is the object of a scheme shown in patent No. 516,668 by P. Burt, " Hollybank," Siiverwells......