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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 224

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 224
as in Figures 246 and 247 at D, F, G, K, P, H, I andJ, were drawn as shown. The pitch circles, how-ever, are usually drawn in red ink to distinguishthem. Q … ^Hl_^i In Figure 248 Is an example in which part of theo^ear is shown with teeth in, and the remainder is illus-trated by circles. In Figure 250 is a drawing of part of the feed n^io-tions of a Niles Tool Works horizontal boring mill,Figure 251 being an end view of the same. / is a fric-tion disk,…

Mechanical drawing

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