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)
EXAMPLES IN ENGhWE WORK. 28/ gravity into the groove in the crank wheel, and is car-ried by centrifugal force to the outside surface of thecrank-pin ; so that whatever other means of lubricationmay be employed, this one will always be positive inits action. This cut also shows the manner in…
Mechanical drawing
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