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)
ssing through the eye or centreE of the short arm. Take the radius from F to G,and from E as a centre mark it on D as at H, and His where E will be when the lomr arm moves to A. PLOTTING MECHANICAL MOTIONS. 225 We have here simply decreased the motion in thesame proportion as one arm is shorter… … !j9- 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 line x; 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 from…
Mechanical drawing
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