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)
, and thecutting edge required may be 26o MECHANICAL DRAWING SELF-TAUGHT, found from the construction shown in Figure 292;hence all that remains is to find the curve for the cuttingedge. In Figure 293, let A A represent the centreof the cutter width, its sides being F F, and its end B B.From centre… … 292, and mark it as from C to K. Then draw lineE E, passing through point K. Draw line G, standingat the same angle to A A as the face h b, Figure 292,of the cutter does to the line A A, and draw line HH, parallel to G. From any point on G, as at I, withradius J, draw a quarter of a circle, as K.…
Mechanical drawing
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-79-9.webp)
