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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 225

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 225
a Niles Tool Works horizontal boring mill,Figure 251 being an end view of the same. / is a fric-tion disk, and g a friction pinion, g is a rack, F is a14 2IO MECHANICAL DRAWING SELF-TAUGHT. feed-screw, / is a bevil pinion, and q a bevil wheel; z,m, 0, are gear wheels, and J a worm operating… … Fiff. 248. Figures 252, 253, 254, 255, and 256. The pitch-circleis drawn by the construction for drawing an ellipsethat was given with reference to Figure Si, but asthat construction is by means of arcs of circles, andtlierefore not strictly correct, Professor IMcCord, in aniirticle on clliplical…

Mechanical drawing

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