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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 (1889)

Rose, Joshua · Philaelphia, H.C. Baird & co.; [etc., etc.] · leaf 347

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, 1889, leaf 347
Bole BcaleW-lfoot.Fig. 316. iron columns, these being riveted to the boiler shellangle pieces which rest upon the columns. The heatand products of combustion pass from the furnacealong the bottom of the boiler, and at the end pass into19 290 MECHAXICAL DRAWING SELF-TAUGHT. and through the tubes and… … .Front Eleoat 1071Fig. 317. bridge wall an opening, and its service is to admit airto die gases after they have passed the bridge wall, andthus complete the combustion of such gases as may EXAMPLES EV ENGINE WORK. 291 have remained unconsumed in the furnace. Thecleansing door at one end and that…

Mechanical drawing

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