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)
^to—Section of Cylinder and Steam Chest. (Page 283.) EXAMPLES IN ENGINE WORK. 283 … Fig. 311—Valve Motion. 2S4 MECHANICAL DRAWING SELF-TAUGHT. cesses are kept in communication with each other bymeans of relief passages in the valve. From this it J. o will be seen that the valve is subjected to equal andbalanced pressure on each of its sides, and hence, is inequilibrium. The valve…
Mechanical drawing
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