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)
fWk 77/////7Z7^7777^^ |^<v^ … QV £1Fig. 245. tt^xr^ cone surface on which the teeth lie being left blank,save at the edges where a tooth Is In each case drawnin. Wheel D is shown in section so as to show themeans by which it may be moved out of gear with Cand E. Small bevll gears may also be represented bysimple line shading;…
Mechanical drawing
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