Publisher's Synopsis
Excerpt from Electric Railway Power Stations
On top of shell near the front end is riveted a steam nozzle or saddle, to which is bolted a tee. This tee car ries the steam valve on its branch, which is made to look either to front, rear, right or left; on its top the safety valve is placed. The saddle has an area equal to that of stop valve and safety valve combined. The rear head carries a blow-off ?ange of about same Size as the feed ?ange, and a manhead curved to fit the head, the man hole supported by a strengthening ring outside. On each side of the shell a square bar, the tile-bar, rests loosely in ?at hooks riveted to the shell. This bar supports the side tiles whose other ends rest on the side walls, thus closing in the furnace or ?ue on top. The tsp of the tile bar is two inches below low water line. The bars rise from front to rear at the rate of one inch in twelve. When the boiler is set, they must be exactly level, the whole boiler being then on an incline, i. E., with a fall of one inch in twelve from front to rear.
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