ENGINEER'S The air-valve arrangement located on the right side of the cab, by means of which the engineer operates the driving-wheel and other brakes on the locomotive, and also the several sets of air-brakes attached to the cars of the train.
See Truck.
Bars suspended at their middle points underneath the engine-frame, and connected at their ends to the springs of the driving-wheels, for dis tributing the force of the shocks.
The spiral or elliptical springs on the reverse-shaft, provided for the purpose of equalizing the weight of the links.
middle opening in the seat of each slide-valve.
The clamps bolted over the main frames and the furnace-pads, to allow for the expansion of the boiler under the influence of heat. Also, the clamps bolted to the fire-box under the main-frame to hold the latter against the liners.
The pipe which conveys the feed water from the feed-pump to the boiler. See Injector.
The force pump which supplies the boiler with feed-water. it forces the water into the boiler against the in the boiler. See Injector.
he water tank provided for the of holding the feed-water for the boiler. It is located in the tender.
The water used for the supply of the boiler. The furnace, or that part of the boiler, in which the fuel is burned.
The door in the back end of the boiler, .t which the fuel and the firing irons are introduced fire-box.
The pipes in the boiler which carry off the smoke and the waste-gases from the fire-box to the smoke-box, and thus produce the draft necessary for the combustion of the fuel. They are made of iron, the diameter of the tubes being kept as small as possible so as to subdivide the volume of the smoke and gases into a large number of small streams, thus exposing them to • large radiating surface, through the medium of which the heat is trans mitted to the water surrounding the tubes.
The plates which cover the spring packing on the front ends of the piston-heads. A platform on the back end of the boiler, on which the engineer stands.
A cast-iron plate bolted to the back end of the frame opposite the fire-door.
The strong metal skeleton which supports the boiler, machinery, and axles of the locomotive. The connecting arrangement between the front and main frames.
part of the locomotive which includes the extended outer-shell of the boiler, comprising the smoke-box and all of the appliances contained therein. such as steam and exhaust pipes, netting', diaphra draft-pipes and the base of the smokestack. The function of the front-end is to draw atmospheric air into the ash-pan, and thence through the grate and the fire-box, and to draw the furnace gases through the flues, and thence under the diaphragm into the smoke-stack, and force them out into the atmosphere.
FammitArt-- A single-bar attachment which extends from the front of each of the main frames to the front bumper.
Peosr-cocics.— Cocks provided for the purpose of admitting steam from the boiler to the feed-pipes, to prevent them from freezing in cold weather.
Plugs screwed into the pump chambers and pump cages to allow the water to drain out and prevent them from freezing. The knees bolted on the shell of the fire-box, to place the weight of the boiler on the frame. The wrought-iron rings which connect the outside and inside sheets in the water space at the bottom of the furnace.
GIB.— The fixed wedge employed to compensate the wear in the boxes, on the cross-heads, and of the crank-pins. A bush by means of which the packing in the stuffing boxes is secured in place. to receive the wear of the piston-rod, and to prevent the leakage of steam. A bent pipe of braes, or iron, employed to connect the front end of the feed-pipe with the lower chamber of the pump.