Leeds, Charles Carley, 1870- (from old catalog) · New York, D. Van Nostrand company · leaf 58
d the 15° involute. To construct it: Describe the pitch circle ofthe required gear and draw a line tangent to it. At the tangent point,draw a line at an angle of 15° to the tangent line. From the center ofpitch circle, draw a circle tangent to the 15° line; this is called the basecircle, and is the… … CLASS Industrial trade Machinist NAME John yv. Roberls date Man20-O7. THE CARNEGIE TECHNICAL SCHOOLS pittsburgh, pa.School of Apprentices and Journeymenmechanical drawing Spur Gear SCALE Full Size Diva.No.C^IOI& LESSON No. 24. SPECIFICATIOX.—This lesson is for the purpose of helping thestudent to…
Mechanical drawing
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