Fairbairn, William, Sir, 1789-1874 · London, Longman, Green, Longman, Roberts & Green · leaf 50
lar arc nearlycorresponding with its curve, and to employ this in marking outthe cogs of the required wheel. Seeing the advantages of the circular arc, and believing thatit is not objectionable if only the employment of it is guided bytrue principles, Professor Willis has rendered this great… … Let AB (fig. 196) be the centres of ;i wheel and pinion, andc the point of contact of the pitch circles on the line of centres.Through c draw c c (/ at any angle with A e. Assume c as thecentre from which to describe an arc for a tooth of the wheel a.Draw c d perpendicular to c c c, and from a…
Mills and mill-work · Machinery
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
