Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 9
no longer practicable with solidteeth. The curves will cross each other,and there will be an interference. 17.—THE SMALLEST PITCH CIRCLE. To determine the smallest pitch circle thatcan be used, and avoid the cusps altogether,find by trial the point (7, Fig. 9, from whichbut one tangent arc G c can… … 18.—THE TERMINAL POINTo When a tangent arc can be drawn, fromthe pitch point 0 as a center, to the line ofaction at any point T, except the vertex W,Fig. 10, there will be a corresponding cross-ing of the normals to the odontoid commenc-ing at the point t, and a termination of theaction when the…
Gearing
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-322-213.webp)