Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 260
Fig. 429. The direction of the straight edges of the teeth is atright angles to the line of action, that is generally lines makingangles of 75° with the pitch line. For racks which are to run withpinions having fewer than thirty teeth, the outline of the teeth onthe rack near the addendum are… … Fig. 428. tion of an epicycloid and the flank a hypocycloid,both joined in the pitch point. If a circle is made to roll along a straight line,always remaining in the same- plane, a point in thecircumference of the rolling circle will describe acycloidal curve. The rolling circle is called the…
Mechanical drawing · Machine design
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