Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 84
.98 to 1 gave a quick re-turn of 1.6 for the second gear, and 2.8 forthe third gear, while their true computedvalues are 1.66 and 2.74. The chart will solve quick returntrain questions involving gears notflatter than .80, as accurately as needbe. For example, the ratio of axesof .95 will give a… … Quick return train Fig, 136,
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-332-223.webp)
