. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. t of tbe 5mokearch, in tliis form of setting,is flush with the front of thebrickwork, and the dry sheetjust outside of the fronthead is built into the brick-work. The heat from thefire, striking through thebrickwork, impinges on thissheet, which is unprotectedby water on the inside. Solong as the furnace walls arein proper condition the heatthus transmitted should notbe sufficient to give trouble;but after running some timebricks are very apt to fall FrootforWaterTube Boiler.
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. t of tbe 5mokearch, in tliis form of setting,is flush with the front of thebrickwork, and the dry sheetjust outside of the fronthead is built into the brick-work. The heat from thefire, striking through thebrickwork, impinges on thissheet, which is unprotectedby water on the inside. Solong as the furnace walls arein proper condition the heatthus transmitted should notbe sufficient to give trouble;but after running some timebricks are very apt to fall FrootforWaterTube 71. away from over the fire door, and thus expose portionsof the dry sheet to thedirect action of the fire,causing it to be burnedor otherwise injured bythe heat, and perhapsstarting- a leakagearound the front rov?- ofrivets when the head isattached to the shell. In the overhangingfront this tendency isentirely prevented bysetting the boiler in sucha manner that the drysheet projects oui intothe boiler room. If thebrickwork over the nredoor falls away when aFJush Front. —Fig. 72. boiler is -^t in this man-. Maxims and Instructions. 167 BOILER FRONTS. , tlie only effect is toslightly increase the heatingsurface. No damage canbe done, since the sheetagainst which the heatwould strike is protected bywater on the inside. The objection is some-times raised against the pro-jecting front, that it is inthe way of the fireman. Tomeet this point and yet pre-serve all the advantages ofthis kind of front, the cut-away style has come into this form the lower por-tion or the front sheet is cutobliquely away, .so that atthe lowest point the boilerprojects but little beyondthe brickwork. It will be noticed thatin the flush and overhang-ing fronts, the doors openside^dse, swing about onvertical hinges; in thecutaway front the bestway to arrange the tubedoor is to run a hinge al ongthe top of it, horizontally,and to have the door openupward. But with sucha disposition of thin
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
