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)
-passes set to the length of rod R from 1 on H, as acentre, we mark on the line of motion of the slide, linea, which shows where the other end of rod R will be(or in other words, it shows the position of bolt B inFigure 284), when the centre of A, Figure 284, is inposition 1, Figure 285. From 2 on… … Fig. 285. a to 6, in Figure 285. From 3 we mark c, and so on,all these marks being above the horizontal line M,representing the line of motion, and being for the for-ward stroke. For the backward stroke we draw thedotted line from position 17 up to arc H, and with thecompasses at 17 mark a line…
Mechanical drawing
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