Canadian foundryman (1921) . o reach withthe regular machine. NEW HELICAL WORM GEAREDCRANE LADLE The Whiting Foundry Equipment Co.,Harvey, Illinois, is putting on the marketa new and interesting helical wormgeared crane ladle, which embodies somefeatures which are a decided departurefrom the regular run of geared ladles. arrangement is that the gear alignmentis not affected by wear on the trunnionjournals. This gear combination, as illustratedin accompanying phantom view, has theself-locking feature of worm gearing butby virtue of the balanced thrust obtainedthrough the helical gears, and the
Canadian foundryman (1921) . o reach withthe regular machine. NEW HELICAL WORM GEAREDCRANE LADLE The Whiting Foundry Equipment Co.,Harvey, Illinois, is putting on the marketa new and interesting helical wormgeared crane ladle, which embodies somefeatures which are a decided departurefrom the regular run of geared ladles. arrangement is that the gear alignmentis not affected by wear on the trunnionjournals. This gear combination, as illustratedin accompanying phantom view, has theself-locking feature of worm gearing butby virtue of the balanced thrust obtainedthrough the helical gears, and the effic-iency of this gearing being much hig/ie/than that of the ordinary worm gearing,the power required to rotate is consid-erably less. The helical gear on thehand wheel shaft meshes with a helicalgear on the worm shaft. The wormshaft is placed at an angle so that theworm will properly mesh with the largestraight-toothed gear keyed to the trun-nion. The large straight-toothed gear isof cast steel; the worm and helical gears. are forged steel. All gears have ma-chine cut teeth. The construction of thegear case is such that it will accommo-date several different ratios of helicalgears, depending on the speeds new style gearing is completelyenclosed in dust-proof cover, yet is readilyaccessible for inspection. Small oil cupswith spring caps provide ample lubrica-tion. STUDENTS COURSE OF FOUNDRYPRACTICE (Continued from page 38)analysis are not considered. While inthe main they are correct, I think it willbe quite possible to show that to dependon the instructions given in the generalrun of text-books on the subject the foun-dryman will be misled. In a foundry atBrantford I found them using two brandsof sand which they secured locally. Onewas coarse grained and very rich in alu-mina, while the other was fine and weakin bond. The latter was used on the snapbenches and the former on the that fine sand would peel from heavycastings while the coarse sand which w
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
