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)
through the eye or centreI^ of the short arm. Take tlie radius from V to G,and from E as a centre mark It on 1) as at H, and His wluMe Ii will be when the lonjj arm moves to A. rLOTTING MECIIAXICAL MOTIONS. 22$ We have here simply decreased the motion in thesame proportion as one arm Is shorter… … Fig. 259. lever acts directly upon a shoe. Now let it be re-quired to find how much a given motion of the leverwill cause the shoe to slide along the linear; the pointH is here found precisely as before, and from it as acentre, the dotted circle equal in diameter to the smallcircle at E Is drawn…
Mechanical drawing
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