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SLUDGING and DILUTION By R. W. BENT, M.I.Mech.E. I N ensuring that an adequate supply of the correct quality of lubricating oil is supplied to an engine, the manufacturer, oil......

Simplify* Valve Assembly

A ""'type of valve-spring collar, which is so simple that one wonders why it has not been thought of before, has been patented by Mr. G. G Holdsworth, of Messrs. Ea.risdon......