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)
pencilto be placed against the eccentric at E, and supposethe eccentric to make half a revolution, whereuponthe pencil will be pushed out to F. If now we measurethe distance from E to F, we shall find it is just twicethat from A to B. We may find the amount of motion,however, in another way, as by… … same axis or shaft, and it is required to find how mucha given amount of motion of the long arm will movethe short one. Suppose the distance the long armmoves is to A. Then draw the line B from A to theaxis of the shaft, and the line C the centre line of thelong arm. From the axis of the shaft as a…
Mechanical drawing
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