Notes for mechanical drawing; arranged for the use of the students of the Mechanic arts high school and the Evening school of trades (1904)
Mathewson, Frank E. (Frank Elliott), b. 1869 · Springfield, Mass. · leaf 168
he pitch line forthe teeth. Draw the base line one-sixtieth of the pitjhdiameter inside the pitch line. Take the tabular faceradius, after multiplying or dividing as is required bythe table, and draw in all the faces, from the pitch lineto the addendum line from centers on the b:ise line.Take the… … F/3.S. Special Rule for the Involute Rack. Draw the sides of the rack tooth as straight lines totlie line of centers coc at an angle of 15°. Draw theoulcr half ah of the face, one quarter of the whole MECHANICAL DRAWING 82 length of the tooth, from a center on the pitch line, and may best be drawn…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
