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)
scribing circle as it rolls outside of P P. Let thepoint B represent the centre of the generating circle … when it is in contact with the pitch circle at A. Thenfrom B mark off, on B C, any number of equidistant .l dra: ht. points, as D E. F. G. H. and from A mark on thepitch circle, with the same radius, an equal number ofpoints of division, as i : 4,5. With the corn- et to the radius of the generating…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
