Beale, Oscar James, Brown & Sharpe Manufacturing Company (Providence, R.I.) · Providence, R.I. : Brown & Sharpe Mfg. Co. · leaf 108
ement, angle increment and* center angle from him. He uses the term hackangW for what we have called angle of edge, only hemeasures the anjsrle from the axis of the gear, instead ^ , o o To lay out an of from tho side of the gear or from the end of hub, Angle by theas we have done; that is, his… … T^S.39 90 BROWN & SHARPE MFG. CO. inches in diameter. Set the dividers to ten times thesine of the required angle, and point off this distancein the circumference as at A B. From any point O inthe circumference, draw the lines O A and O B. Theangle A O B is the angle required. Thus, let the…
Gearing
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![An illustration from Sidereus nuncius : magna, longeque admirabilia spectacula pandens, suspiciendaque proponens vnicuique, praesertim verò philosophis, atq[ue] astronomis, quae à Galileo Galileo ... perspicilli nuper à se reperti beneficio sunt obseruata in lunae facie, fixis innumeris, lacteo circulo, stellis nebulosis, apprime verò in quatuor planetis circa Iouis stellam disparibus interuallis, atque periodis, celeritate mirabili circumuolutis; quos, nemini in hanc vsque diem cognitos, nouissimè author depraehendit primus; atque Medicea sidera nuncupandos decreuit (1610)](https://img.insideoutlibrary.com/img/200/ia-sidereusnunciusm00gali-31-11.webp)
