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)
me time the movement of V opens theright-hand end of this cylinder to the exhaust, throughthe exhaust ports X and Z. The parts C and D nowhave positions opposite to those sliown in the engrav-ings, and steam is therefore entering the main cylinderthrough the ports 1^ i and II i,and escaping… … Fig. 306. 288 MECHANICAL DRAWING SELF-TAUGHT. will follow, when the piston approaches the right-handend of its cylinder. By this simple arrangement thepump is rendered positive in its action; that is, it wdllinstantly start and continue working the moment steamis admitted to the steam-chest, while…
Mechanical drawing
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