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)
c,d, e, joining the ends of lines t, j, k, /, and touchingthe inner circle, a, a. The outer circle is then pencilledin, touching the lines of division where they meet thelines 3, c, d, e, and the rest of the lines for the sides ofthe polygon may then be drawn within the outer circle,as at g, h. It… … Fig. 176. where it is desired to draw a chuck-plate having 6slots. The triangle of 60 is used to draw the centrelines, a, by c, etc., for the slots. From the centre, thearcs e, f, g, /i, etc., are marked, showing where thecentres will fall for describing the half circles forming-the ends of the…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
