The Locomotive Of Today

The Tender, Brakes, etc. : Water Capacity^Axlebox. 163 tender which migtLt.Qcaurif._all tlie water were carried high er up. D gives elevations of the two ends of the tender, the left hånd being’ the back and the right ha-nd- the-front view. - When the amount of water required for the trip is likely to exceed the quantity carried, it is customary now to fit the tender with a Ramsbottom scoop, which can be let down into water troughs laid between the rails to replenish the quantity carried without stopping. In cases where this arrangment is not adopted larger tenders, carrying 4,000 gallons and over are made, usually running upon two four-wheeled bogies, which are, however, unlike those of the engine as they are not fitted for side play but only move about the centre pin with circular motion. Bogie tenders are being largely built on the Con- tinental railways, as the weight of trains and length of runs increase, and in America they have always been the standard type whether fitted with picking up scoops or not. Various details of tenders are shown in Fig. 34. A repre- sents an arrangement of axle box guides and horns of clifferent design to those shown on the tender drawing, Fig. 33, which are similar to those described for the leading end of engines at B, Fig. 26. The frames are cut out and carried down below the guides, the hornstays being fitted to them, so that the frames and not the hornblocks are held. The blocks are fitted and bolted or rivetted to the frames similarly to those of the engine. An axle box is drawn at B, in front elevation and in longitudinal section. The box is ot cast iron, and has a gun- metal bearing fitted inside, with a sliding block above and a keep below the journal. The front can be detached by taking- out the three bolts holding it, and then by simply raising the box the bearings can be removed and replaced without taking the wheels from under the tender. In the sliding block above, a socket is made to receive the end of the pin projecting down from the spring buckle, and outside this an oil box is formed with a lid to enable oil to be supplied to the bearing as well as the slide. In the keep below, a pad of sponge or horsehair is placed, and oil that is put into the oil cup at the front is retained in this and fed up to the under side of the bearing, thus continually lubricating it without any oil syphoning out. The keep can be detached by taking the nuts off the four bolts projecting down through it from the box. A spring is shown at C, made in one of the various ways described when dealing with engine springs. The plates are held from slipping out of the buckle by a depression made in the top of each plate, forring out a projection on the under side, which fits into the depression in the next lower plate,