. Railway master mechanic [microform] . t the work tends to tighten thebushing against the arbor, clamping it more firmly. A setconsists of 16 arbors and 32 bushings, varying in size fromone inch to seven inches, inclusive. He has also designed another device to give a machinistthe advantage of air hardening tool steel for machineshop purposes, independent of the use of a tool dresser. .shown by the illustrations, the nut consists of an inner andan outer part, which when assembled are a unit. Theinner nut, which is threaded to receive the bolt, is slottedthroughout its length and is tapered fr
. Railway master mechanic [microform] . t the work tends to tighten thebushing against the arbor, clamping it more firmly. A setconsists of 16 arbors and 32 bushings, varying in size fromone inch to seven inches, inclusive. He has also designed another device to give a machinistthe advantage of air hardening tool steel for machineshop purposes, independent of the use of a tool dresser. .shown by the illustrations, the nut consists of an inner andan outer part, which when assembled are a unit. Theinner nut, which is threaded to receive the bolt, is slottedthroughout its length and is tapered from above downwardto fit and correspond with the taper of the outer or bindingnut. The device is a combination of three mechanical pow-ers—although only in two parts—the wedge, the screw andthe lever. It is a positive lock nut which will remain in-definitely where placed; it automatically fastens both boltand nut absolutely. This nut is manufactured by the Columbia Nut & BoltCompany, 304 East Washington avenue, Bridgeport,
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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895
