. The railroad and engineering journal . a screw and star wheel, arranged to give ■(fig. 5) Fig. 4. ng against the tool-post. The radialnachine to the studs are so finishedwith slots as to give a wide range ofadjustment. Great care has been taken to havethe nuts and washers, that are fur-nished on the studs for holding themachine, clamp the radial arms so asnot to spring the machines Thenuts are turned convex, and thewashers are bored out concave, sothat a perfect ball-and-socket joint isformed, allowing adjustment of themachine holding it firm andsolid, even though the stud shouldbe out
. The railroad and engineering journal . a screw and star wheel, arranged to give ■(fig. 5) Fig. 4. ng against the tool-post. The radialnachine to the studs are so finishedwith slots as to give a wide range ofadjustment. Great care has been taken to havethe nuts and washers, that are fur-nished on the studs for holding themachine, clamp the radial arms so asnot to spring the machines Thenuts are turned convex, and thewashers are bored out concave, sothat a perfect ball-and-socket joint isformed, allowing adjustment of themachine holding it firm andsolid, even though the stud shouldbe out of line. In case the studholes in a small seat should comeinside the plates, four other radialarms are furnished with the machine,fitted with a T-slot, and with a holeat the otherend corresponding to thehole for the old stud, thus affordingfacilities for extreme This machine, it is claimed, will do the work accurately, without the use of files or scrapers afterthe machine has faced off the seat. The plates are set true ^^L^-. ENGINEERING JOURNAL. 162 with the unworn parts of the valve-seat, consequently the newface will be likewise true. It is readily seen that the workdone is exactly in line with the travel of the valve-stem,thereby preventing the yoke from slipping up and down thevalve, as well as all extra friction on the valve-stem. Nomore material need be removed than is absolutely necessaryto true up. thus saving the seat. The work is done by a con-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
