Leeds, Charles Carley, 1870- · New York, D. Van Nostrand company · leaf 58
It is necessary to lay out the involute curve but once, forthe student may set his compasses to a radius (which will be an approx-imation to this curve), to throw in the faces of the other teeth. Thiswork requires the utmost care to obtain accurate results. When pencil drawing is complete, make a… … CLASS Industrial trade Machinist NAME John ^V Roberts date Mar 20-Oy. THE CARNEGIE TECHNICAL SCHOOLS PITTSBURGH, PA. School or Apprentices and Journeymen MECHANICAL DRAWING Spur Gear SCALE Full Size Dna.No.C.IOI6 LESSON No. 24. 5PECIFICATI0X.—This lesson is for the purpose of helping thestudent to…
Mechanical drawing
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