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)
ver position the centre H may be it will be some-where on the arc I, I, which is struck from the centreS. Now suppose that D moves to E, and if we take 228 MECHANICAL DRAWING SELF-TAUGHT. the radius D, H, and from E mark it upon the arc I asat V, then H will obviously be the new position of H.To… … Fig. 263. a centre mark it on J, J, as at K, which Is the positionof G when D is at E and H is at V. For the posi-tions when D Is at F we repeat the process, taking theradius D, H, and from F marking P, and with theradius H, G, and from P as a centre marking Q; thenP Is the new position for H, and…
Mechanical drawing
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