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)
Fig. 260. In Figure 261 a Hnk is introduced in place of the rol-ler, and it is required to find the amount of motion ofrod R. The point H is found as before, and then thelength from centre to centre of link L is found, andwith this radius and from H as a centre the arc P … Fig. 261. is drawn, and where P intersects the centre line J ofR is the new position for the eye or centre O of R. In Figure 262 we have a case of a similar lever actua-ting a plunger in a vertical line, it being required to findhow much a given amount of motion of the long arm willactuate the…
Mechanical drawing
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