Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 12, 2025
The chimney of a locomotive should have half the area of the tubes at the ferules, which is the most contracted part, and the blast orifice should have 1/10th of the area of the chimney. The sectional area of the tubes through the ferules should be as large as possible.
The ferules are for the most part made of steel at the fire box end, and of wrought iron at the smoke box end, though ferules of malleable cast iron have in some cases been used with advantage: malleable cast iron ferules are almost as easily expanded when hammered cold upon a mandrel, as the common wrought iron ones are at a working heat.
The tubes are secured in the tube plates by means of taper ferules driven into the ends of the tubes.
Word Of The Day
Others Looking