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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 254

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 254
assumed in the figures to be on Itsdead centre nc^irest to the engine cylinder, and to rc-vnlxc in the direction of the arrows. The cams are PLOTTING MECHANICAL MOTIONS. 237 SO arranged that their plain unflanged surfaces boltagainst the collar. The method of drawincr or markinc^ out a full stroke… … Scale 1 ^ = 1 footFig. 270. The circumference of the cam is composed of fourcurved lines, P, F, K i, and K 2. The position of thecentre of the crank shaft in this irregularly curvedbody is at X. The arcs K i and K 2 differ in radius,but are drawn from the same point, X, and hence areconcentric with…

Mechanical drawing

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