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)
y betaken for any pitch by a direct application of thecompasses. A scale of this kind is given in Pigure To 7TO 5TT 6TT 35. 1 n which the line A B is divided into inches and parts to represent the pitches; its total length repre-senting the coarsest pitch within the capacity of thescale; and the… … <322 Depth of Pitch Line \^ Thickness of Tooth Width of Space _ Working Depth of Tooth _Wh olcJD epth^ of Toot^^ ^^i ■^^^■ The other dlai^onal lines are for the proportion o^the dimensions marked on the fiourc. Thus th(^ DRAWING GEAR WHEELS, 197 depth of face, or distance from the pitch line to…
Mechanical drawing
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