. The railroad and engineering journal . 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-. ing to face the valve. Fig. 8 shows the machine proper, and(ig. <) shows the machines in combination. The tools illus
. The railroad and engineering journal . 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-. ing to face the valve. Fig. 8 shows the machine proper, and(ig. <) shows the machines in combination. The tools illustrated in this article are made at the L IVlachlne Works of Messrs. Pedrick & Aycr inPhlLidelphia. Vulcabeston. TuK H. W. Johns Manufacturing Company, of New York,has brought out this new material, composed of asbestos com-bined with water and acid-proof materials, vulcanized andcompressed. It is used for piston, piston-rod. ring-flange and
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
