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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)

Rose, Joshua · Philadelphia, H.C. Baird & Co.; London, S. Low, Marston, Searle & Rivington · leaf 255

An illustration from 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, leaf 255
■18—,7- Scalc 1^^ = 1 foot <-%---> Fig. 271. … Scale 1H_.1 foot PL O TTIAG MECIIAXICAL MOTIOXS. ^39 the arcs P, P, with the arc K i. Thus arcs P, P, areeccentric to the crank shaft. To draw the cam place one point of the dividers atX, which is the centre of the crank shaft, and drawthe circle E equal to v/iclth of yoke, i8 inches.Throuo-h this…

Mechanical drawing

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