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 259
Fig. 426. addendum circle. The part of the flank betweenthe base circle and the dedendum circle is straightand is part of the radius of the circle. No wheel having less than 12 teeth will gear cor-rectly together when the base circle is laid out in 384: ROGERS DRAWING AND DESIGN. … Fw. 427. this manner ; in practice a curve wliich approximates the required involute curve is generally employed.In the Brown & Sharp system the line of action is drawn so as to make an angle of 75 3^°, Fig. 428. This is true for gears having more than thirty teeth :for gears having a smaller…
Mechanical drawing · Machine design
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