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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 247

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 247
osition R, andpoint C will have moved from its position In the draw- Fig. 265. ing to G on line x. If the eccentric centre be sup-posed to move on to F, the point C will move to H,the radii B C, E G, and F H all being equal in length.Now wlien the eccentric centre is at E it will havemoved… … PLOTTIXG MECHANICAL MOTIONS. 23^ moving from E to F, which is but one-quarter of arevolution, the rod end Avill move from G to H. Thisoccurs because the rod not only moves endwise, butthe end connected to the eccentric strap moves to-wards and away from the line x. This is shown inthe fio^ure, the…

Mechanical drawing

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