. Locomotive engineering : a practical journal of railway motive power and rolling stock . crew-threaded boltpasses through the yoke, and has mount-ed upon it a cutter carrier (through aslot in which projects the tool) anda conical feed block. The T-shapedhead of the cutter rides in an undercutgroove in the conical surface of the feedblock. The feed block is moved longi-tudinally by turning a nut on the boltoutside the yoke. The cutter carrier isturned by means of a hand-spike, whichis inserted in holes in the flue-cutter shown in Fig. 7 oper- shaped wheel, which engages lugs on th
. Locomotive engineering : a practical journal of railway motive power and rolling stock . crew-threaded boltpasses through the yoke, and has mount-ed upon it a cutter carrier (through aslot in which projects the tool) anda conical feed block. The T-shapedhead of the cutter rides in an undercutgroove in the conical surface of the feedblock. The feed block is moved longi-tudinally by turning a nut on the boltoutside the yoke. The cutter carrier isturned by means of a hand-spike, whichis inserted in holes in the flue-cutter shown in Fig. 7 oper- shaped wheel, which engages lugs on thecutters to force them out against the stem has a head carrying a pawl,which engages a ratchet on the mandrelto hold the cam wheel, the head havingholes for tlie insertion of a hand-spiketo turn it. The mandrel turns in a sleeve is adapted for fastening to a tube ex-pander, by which it may be secured in anadjacent flue. There is a class of flue-cutters whichmake a series of longitudinal cuts in theend of the flue, after which the tonguesor splinters thus formed are bent toward. tjfinmriHU Fig. 6 FLUE-CUTTER SECURED ItY EXPANDERJAMMED IN NEIGHBORING FLUE. which has three levers mounted in earsupon it, the rear ends of the levers en-gaging the inside of the flue to hold thesleeve stationary, and the forward endsof the levers being engaged by a conicalsurface on a collar which is threaded onthe mandrel, and by which the levers arespread. A flue-cutter which is similar in prin-ciple to that last described, but in whichcutting wheels or disks are used, is illus-trated in Fig. 8. The mandrel is rotatedby a hand-lever, and carries at its innerend two pivoted arms provided withcutting wheels, the pivots of the arms be-ing connected by a cross-plate. Within Fijy. 7 FOUR PIVOTED TOOTHED CUTTERS EX-PANDED BY CAM WHEEL. the axis of the flue, tin ;ng the ex- panded portion and allowing the with-drawal of the flue. A cutter of this typeis illustrated in Fig. 9. Three cuttingwheels a
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Keywords: ., bookcentury1800, bookdecade1890, bookidlocomotiveen, bookyear1892
