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)
f the pinionteeth is marked below ; thus arc b does not meet Ji orp, but Is short to the amount of clearance. Havingobtained the arcs dy e,f, the curves may be markedthereon as for a spur wheel. A tooth thus marked Isshown at x, and from Its curves between /; and c, atemplate may be made for the… … Fig. 243
Mechanical drawing
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