Shop practice for home mechanics, use of tools, shop processes, construction of small machines. Contains a chapter also on theoretical mechanics and on miscellaneous information relative to shop work (1920)
Yates, Raymond F. (Raymond Francis), 1895- · New York, N. W. Henley Pub. Co. · leaf 108
Fig. i2^—Method of marking out for holes to be drilled is drawn all the way around. Distances for the smallholes around the edge are then marked off and an inden-tation is made at the proper point with the prick-punch.The dividers are then used in drawing the small circlesshown at the point where… … Fig. 126—How marking is done for the drilling of large holeswith a twist drill ing the drill as will be explained later. The same pro-cedure is followed mth the large holes. ,Back Ed^e ,Web Cutfinq ! Edge J, ..Cuffing Back—r^^X: ^^^^ Edge \r\ / /f:-Kf/ufe J/\ Edge V -F/ufe Fig. 127—The twist drill…
Machine-shop practice · Handicraft
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