. Electric railway gazette . that there are twosets of tubes, one set inside the other, the arrangementat the front end being such that the water enters theinner tubes, passes to the rear and flows back to thefront through the outer tubes, as indicated by the whitearrows. The drum is suspended from steel channelbeams, which are supported on iron columns indepen-dently of the brickwork. The connection between thesaddle in the front end of the drum and the front header December 21, 1895. ELECTRIC RAILWAY GAZETTE. 455 consists of extra heavy nipples expanded in; at the rearend lap-welded tubes ar
. Electric railway gazette . that there are twosets of tubes, one set inside the other, the arrangementat the front end being such that the water enters theinner tubes, passes to the rear and flows back to thefront through the outer tubes, as indicated by the whitearrows. The drum is suspended from steel channelbeams, which are supported on iron columns indepen-dently of the brickwork. The connection between thesaddle in the front end of the drum and the front header December 21, 1895. ELECTRIC RAILWAY GAZETTE. 455 consists of extra heavy nipples expanded in; at the rearend lap-welded tubes are employed to connect the headerswith the drum, and these are also expanded in both thesaddle and the header. The feed-water is introduced through the pipe, U,Fig-. 2, which turns back and empties into the largerpipe, 7, passing down into the headers, P, and throug-hthe inner circulating- tubes, S, to the back headers, G,where it flows back to the heating tubes, H, to the mainchamber, A, of the drum. The rear connections, L,. FIG. 2.—SECTIONAL VIEW. serve to carry water down from the drum to the rearheaders, G, where it combines with the circulationmentioned. A deflecting plate is provided in the drum to separatethe steam from the water as it rises from the headers, vertical connections are given ample proportions soas to assure free passag-eto the mingled steam and water,and avoid, as far as possible, any disturbance of thewater level in the drum. A hand-hole is provided opposite each tube, as shownin Fig. 2, which affords easy access for chang-ing, andall hand-hole plates are on the inside of the headers sothat the steam pressure tends to keep them tight. Noneof the joints are exposed to the direct actionof the fire, and the heating- surfaces are atright ang-les to the direction of the hot gases. The Providence Car Fender. hammered tightly into grooves in a wooden frame, andare locked in the grooves prepared for them by a singleiron plate. The other part of the fender
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
