. Electric railway journal . Detail of Motor-Bearing Chuck After the bearings were in the chuck some time was re-quired to line them up properly before the cuts could bestarted. Now the bearings are placed in the chuck andtightened with two ring-nuts. The bearings are boredabsolutely true both as to center and end or face, while thework itself is done in less than one-half the time requiredby the old method. The chuck consists of a cast-iron cylinder, one end ofwhich is of a size that can lie threaded to fit the lathespindle and the other large enough to admit the the casting is
. Electric railway journal . Detail of Motor-Bearing Chuck After the bearings were in the chuck some time was re-quired to line them up properly before the cuts could bestarted. Now the bearings are placed in the chuck andtightened with two ring-nuts. The bearings are boredabsolutely true both as to center and end or face, while thework itself is done in less than one-half the time requiredby the old method. The chuck consists of a cast-iron cylinder, one end ofwhich is of a size that can lie threaded to fit the lathespindle and the other large enough to admit the the casting is put in the lathe and the threads arecut for the spindle, whereupon it is put on the spindle andthe remaining machine work finished. In this wav the. Chuck Applied to Motor Bearing chuck is made absolutely true. After this four slots are cut90 deg. apart for the jaws and then threaded from each endtoward the center with right and left-hand threads forthe two ring-nuts. The ring-nuts are also slotted on thequarter to permit the use of a spanner wrench for tighten-ing. The inner side of each ring-nut is tapered to fit thetaper of the jaw. A recess is cut in the jaw (section A B)and cylinder to admit a coil spring. This spring serves tohold the jaw in place as well as to release the grip on thebearings when the latter are finished and the ring-nuts arereleased. This chuck can be used also on solid bearings of any sizethat can be put in it. The taper of the jaws can be made tofit the conditions. The range of the device for split bear- ings is limited by the size of the collar on the end of thebearing. To insure an absolutely true face on each half ofa split bearing it is necessary to have something withwhich it can be lined up and plac
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
