OIL-MIXING HOUSES.

107

discharge and supply-room back of the supply-tanks, the number being larger back of the tanks forheavy oils than for light oils. There are also coils along the wall next to the dumping-troughs andon the partition next to the storage-room ; as barrels prior to being dumped are brought in from thestorage-room and placed along this partition the oil is thus rendered fluid enough to discharge easily.The temperature of the discharge and supply-room is generally kept at about 70 degrees Fahr. In thebarrel-storage room the temperature is maintained at about 70 degrees Fahr. by means of coils hung

Oil

P/P£3 TO CR£030T/WC WORKS

Fig. 230. General Plan.

Fig. 231.—Front Elevation,

Fig. 232.—End Elevation.

from the trusses overhead, and by a set of coils along the partition next to the discharge and supply-room, the aim being to gradually heat the oils as they are transferred from the general stock in thestorage-room till ready to discharge into the dumping-troughs. The general temperature of the oil-mixing room does not require to be over 70 degrees Fahr., but it is usually no degrees when working,due to the large amount of heat thrown off by the steam-jackets around the mixing-tanks. The tank-storage room in the basement is heated by a set of coils hung from the roof over the tanks, the tem-perature being kept at about 70 degrees Fahr. The pipes of the steam-coils are t^ in. in diameter.

The house is lighted throughout by incandescent lights supplied from the electric-light plant ofthe railroad company at the Perth Amboy terminal.

The provisions for protection against fire, as shown in Fig. 235, are particularly noteworthy in