Fairbairn, William, Sir, 1789-1874 · London, Longman, Green, Longman, Roberts & Green · leaf 65
of the wheels; with centre a and radius a c describe a circle,and draw e d perpendicular to a e. Take df= c e, then dwill be the centre of the other wheel. From centre d, withradius / cZ, describe a circle. Then the directions of all theteeth in A B c will be tangents to the circle described about… … The Worm and Wheel. By this contrivance the motion of a screw is communicatedwith great smoothness to oblique teeth on a spur wheel. The section of a screw through its axis is precisely similar tothat of a double rack. Let A b be such a section, and forsimplicity suppose that the form of the…
Mills and mill-work · Machinery
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
