. American engineer and railroad journal . - ,jections at and transfer the .^edge view to , giving to theaxis S O the re-quired inclina-tion to a verticalo r horizontalline ; and projectupon the hori-zontal center lineAB oi fig. 369 thevertices 0, 0\ Sof the variouscones employedto determine thedirection andconstruction ofthe teeth. Theteeth themselvesare then to beprojected uponfig. 370 in themanner alreadydescribed in ref-erence to spurwheels, observ-ing that all iheir * The followingexplanation and theengravings illustrat-ing it are taken fromthe ■ Engineer and Fig.
. American engineer and railroad journal . - ,jections at and transfer the .^edge view to , giving to theaxis S O the re-quired inclina-tion to a verticalo r horizontalline ; and projectupon the hori-zontal center lineAB oi fig. 369 thevertices 0, 0\ Sof the variouscones employedto determine thedirection andconstruction ofthe teeth. Theteeth themselvesare then to beprojected uponfig. 370 in themanner alreadydescribed in ref-erence to spurwheels, observ-ing that all iheir * The followingexplanation and theengravings illustrat-ing it are taken fromthe ■ Engineer and Fig. Draw-ing-Book. rectilinear edgesconverge toward the point S, while the outlinesof the planes (which are, in this instance, radial lines) tendtoward O and 0 respectively, according as they are situatedupon the exterior or interior cones, between which the lengthof the teeth is comprised. SCREW GEARING. The most common form of screw gearing is that in which theshafts are at right angles, and a screw of one thread, or some-. VoL LXVI. No. I.] ENGINEERING JOURNAL. 41 1)00
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
