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 (1883)
order indicated by the letters in Fig-ure 189, the example being given for practice. It iswell for the In^ginner to draw examples of common()l)jects, such as the liaml hammer in 1^igure 190, or thechuck plate in Figure 191, which aftbrd good exam-ples in the thawing of arcs and circles. IlXamples… … Fig. 191 ^. In Figure 192 is shown the pencIlHng for a linkhaving the hubs on one side only, so that a centre line 146 MECHANICAL DRAWING SELF-TAUGHT. is unnecessary on the edge view, as all the lengthsare derived from the top view, while the thickness ofthe stem and height of the hubs may be…
Mechanical drawing
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