LOCOMOTIVE, Principal Parts of.— The following list embodies brief descriptions of the construction and operation of the vari ous principal parts of the modern locomotive, For further information consult articles under the titles LOCOMOTIVE; LOCOMOTIVE INDUSTRY ENGINE Ixnusrav in this Encyclopedia.
Ant Air-pressure connection for ringing the signal bell.
Hoes.— The flexible hose connection by which the brake-pipe of the locomotive is attached to that of another locomotive.
OF The lower cylinder of the air-pump which furnishes the compressed-air for setting the air-brakes.
main air-reservoir. See Main Reservoir. Ant-owtioa.— A pressure gauge provided with two hands, one of which indicates the amount of air-pressure in the main reservoir, and the other one the pressure in the main brake-pipe or train-pipe. In the latter the pressure is usually maintained at 70 pounds as indicated by the gauge, and in the main reservoir somewhat in excess of this amount, so as to ensure the proper action of the valves of the air-pump.
Ant-me.— An air-compressing pump which is worked by steam taken from the boiler. It supplies the com pressed-air used for operating the air-brakes, and for signal The pipe from the steam cylinder of the air-pump to the steam-pipes in the smoke box.
The cup or arrangement which contains the oil used in lubricating the air-pump. It is located in the cab.
Asa The flexible hose which connects the air signal-pipe in the cab with the air signal-pipe con nections in the cars.
The sheet-iron plate which COVETS the space between the locomotive and the tender.
The steam-pipes in the smoke box which connect the branch,s of the T- pipe with the steam-chests. BELL.YOSIE or The cast-iron arch placed upon the top of the boiler, in which the bell is swung. Bissax..-ratics.— A wheel arrangement or truck designed to relieve the lateral rigidity in locomotives, and facilitate their travel around curves.