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)
e may be made from which they may betaken for any pitch by a direct application of thecompasses. A scale of this kind is given in Figure235, in which the line A B is divided into inches andparts to represent the pitches; its total length repre-senting the coarsest pitch within the capacity of… … Depth of Pitch Line U= Thickness of Tooth _ .Width _of_Spacf_Work ng Depth of Tooth iU - JMoJ_e_Depth of Tooth J Fig- 235- The other diagonal lines are for the proportion ofthe dimensions marked on the figure. Thus the DRAWING GEAR WHEELS. 97 depth of face, or distance from the pitch line to…
Mechanical drawing
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