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of East Lane, Bedmond, near Watford
1940 Built a small number of vertical four-stroke water-cooled petrol engines 
1967 Patent. Abstract of GB1117624 1,117,624. Sawing. K. F. RUSHTON. 12 June, 1967 [10 March, 1966], No. 10629/66. Heading B5L. A friction cutting saw comprises a circular disc 2 of metal or other suitable material formed on its periphery with a series of alternately oppositely inclined slots 3 which together form a zig-zag formation, the slots intersecting at the edges of the disc and forming between them a series of spaced cutting faces 4 of substantially half diamond shape. The disc is inwardly tapered from its outer periphery towards a parallel part 6 against which impeller shaped fans 5 are disposed to effect cooling of the saw.