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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 271

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 271
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.… … sFig. 289. a right angle to it, as it is in Figure 2$6, and the motionunder this new condition will be as in Figure 289; theprocess for finding the amount of motion along Mfrom the motion around H being precisely as before. PLOTTIXG MECHAXICAL MOTIONS. 257 In Figure 290 is shown a cutter-head for a…

Mechanical drawing

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