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)
of cam will be required for everydifferent diameter of roller R, and that the larger theroller R, the easier and the fester the cam will runwithout knock or jar. CHAPTER IV, SHADOW LINES AND LINE SHADING. SECTION LINING OR CROSS-HATCHING. When the interior of a piece is to be shown as apiece cut in… … Fig. 87. lines are drawn across it, and to distinguish one piecefrom another these lines are drawn at varying anglesand of varying widths apart. In Figure 87 is given aview of three cylindrical pieces. It may be known <:obe a sectional view by the cross-hatching or sectixDnlines. It would be a…
Mechanical drawing
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