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)
NG SELF-TAUGHT. as a centre, and with the length of the rod as a radius,mark the new position of C on the line x of its mo-tion. With the centre of the eccentric at B, the lineQ, representing the faces of the straps, will stand at ari^ht anode to the line of motion, and the length of therod is from… … 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 when the eccentric centre is at E it will havemoved one-quarter of a revolution, and yet the point Cwill only have moved to G,…
Mechanical drawing
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