Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 599
s body, in the main chamber of which the oil iscontained, and extending through this chamber is aregulating valve, the end of which is pointed, so thatif it is desired to increase or diminish the flow of oilthe pin valve may be moved up or down by means ofa regulating nut, and kept in position by a… … (6)Plan View. Figure 244No. 5. Duplex Air Pump in the cap nut, atmospheric pressure is always ad-mitted and present on the surface of the oil in themain oil chamber, consequently, when the pump AUTOMATIC AIR BRAKES 585 piston moves down, the partial vacuum in the pumpcylinder causes the ball valve…
Locomotives
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