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)
passes at S, draw the arc H H. The arcs K i and K2 are drawn from the centre X, with a radius of 10^for K I and 7^ inches for K 2, and only serve in a 244 MECHANICAL DRAWING SELF-TAUGHT. half stroke cam to intersect the curved Hnes alreadydrawn, as shown in Figure 275. In practice, the sharpcorner… … Fig. 278. the cam of this limit (^ stroke) is correcdy drawnby the process described with reference to Figure 275,the outline of the cam so constructed being shown inMgure 276. In Figure 278 is shown a cam designed to cut offthe steam at five-eiglulis of the piston stroke, the con- PLOTTING…
Mechanical drawing
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