. The Street railway journal . CAR ON SEVENTH STREET LINE, ST. LOUIS, WITH COM-PRESSED AIR TANKS ON ROOF from the storage tanks leading to the main valve B, and goingthence to a packing box C, which contains the ball and socketjoint D. In the position shown in this figure, air cannot passthrough this joint, even when B is open, since the passagethrough the ball leading to the cylinder E does not connect upwith the socket entrance port. When the cylinder is in a verti-cal position, however, air may pass through into E, forcing thepiston F upward and rushing out at G. The operation may bebetter
. The Street railway journal . CAR ON SEVENTH STREET LINE, ST. LOUIS, WITH COM-PRESSED AIR TANKS ON ROOF from the storage tanks leading to the main valve B, and goingthence to a packing box C, which contains the ball and socketjoint D. In the position shown in this figure, air cannot passthrough this joint, even when B is open, since the passagethrough the ball leading to the cylinder E does not connect upwith the socket entrance port. When the cylinder is in a verti-cal position, however, air may pass through into E, forcing thepiston F upward and rushing out at G. The operation may bebetter understood from an examination of Fig. 2. As the piston rises the semi-spherical head G enters a receiving box,bolted to the car sill and connected to the car tanks, as charging, the car and box valves must be closed as usual,when the cylinder may be dropped into the box by hand. If,. FIG. ELEVATION OF HOSE BOX, IN USE as is often the case, a motorman after filling should turn off thevalves, but forget to uncouple the connection, the apparatuswill drop back into place of its own accord; an obvious advan-tage over the former method where a similar action would havetotally destroyed a hose. The arc of travel of the charging head and its variable ex-tension permit a car to charge within a limit of 35 ins. Thislimit is marked on the box itself and on a suitable adjacentpoint. It may be noted in passing, that the average city motor-man will consistently stop within 6 ins. either side of the cen-tral point. The parts of the apparatus are of cast iron, with wroughtiron piping, except the ball of the socket joint, which is made ofbrass. The design is such that the same patterns may be usedfor car and for hose box parts. A first trial of the apparatus was made on the Tower GrovePark line Sept. 2, 1904. A few minor faults developed, whichhave since been corrected, an
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
