. American engineer . Fig. 16—Detalis of Eccentric Drilling Jig. in the plate by two nuts. As will be seen in Fig. 16, the underside of the angle has a slot by which the eccentric may becentered. With this device the set screw holes may be drilledand tapped. When drilling for the stud bolt holes, the angleplate is swung around to a horizontal position and is held there , 1913. l^ML\VA^■ AGE GAZETTE, MECHAXICAL EDITIOX. ill by two t;Eccentric pins cxtendin,ips arc drilled LATHE rnne that may(1 cnnvcnifnt g tliruugli tlic plate and llic casting,on the same jig in a similar manner. CHUCK CRAN
. American engineer . Fig. 16—Detalis of Eccentric Drilling Jig. in the plate by two nuts. As will be seen in Fig. 16, the underside of the angle has a slot by which the eccentric may becentered. With this device the set screw holes may be drilledand tapped. When drilling for the stud bolt holes, the angleplate is swung around to a horizontal position and is held there , 1913. l^ML\VA^■ AGE GAZETTE, MECHAXICAL EDITIOX. ill by two t;Eccentric pins cxtendin,ips arc drilled LATHE rnne that may(1 cnnvcnifnt g tliruugli tlic plate and llic casting,on the same jig in a similar manner. CHUCK CRANE. be attached to the back of an en-the spindle is shown in Fig. Fig. 17—Crane for Removing Heavy Latine Chuci<s. It is used for taking off and putting on heavy chucks, makingit possible for one man to handle the chuck easily. The cranepost is 2;/2 in. in diameter and 6 ft. high, the lower end resting in a box imbedded in tlie concrete foundation of the machine,it is supported by a bearing which is fastened to the bed of thelathe by means of cap screws. The arm, or runway, is made oftwo pieces of V/z-m. x I/z-in. iron, bolted to the top (.f thepost with sufficient space between them to allow for a fuur-whecl trolley. The carriage of this trolley contains a screwhoist on the end of which is a yoke to which the chucks arefastened. When ihe chuck is not in use on the lathe, it isheld suspended out of the way of dirt and injury from passingtrucks by this yoke. CLAMPS FOR CROSSHEAD. The device shown in Fig. 18 is used for clamping a cross-head to a planer while the guide faces are being planed; in
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
