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Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments. Elementary instruction in practical mechanical drawing. Together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1889)

Rose, Joshua · Philaelphia, H.C. Baird & co.; [etc., etc.] · leaf 270

An illustration from Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments. Elementary instruction in practical mechanical drawing. Together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers, 1889, leaf 270
he line M correspond to the lineof motion M in Figure 286. Now since it is the pinD, Figure 287, that drives, and since its speed of rev-olution is uniform, we divide its circle of motion H intotwenty-four equal divisions, and by drawing lines radi-ating from centre C,and passing through the lines… … 5> - •0 s» •ss V >» •^3 so «: *» 6. i -*——&•■§ *> * 3« S—: :» 2I Fig. 288. position i on circle H as a centre line, a; from position2 on H we mark line 6, and so on for the whole twenty-four positions on circle H, obtaining from a to n for the ,,-£ MECHANICAL DRAWING SELF-TAUGHT.…

Mechanical drawing

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