LOW PRESSURE BOILER

CHAUDIERE A BASSE PRESSION

Claims

Claim lst. The combination, in a boiler for steam or hot water, of two vertical water sections a forming the sides of the firebox, also three more or less longitudinal water sections o,f. p, arranged over the fire space within an enclosing jacket i, k, and also circulating tubes, 1, en, o, and n connecting said sections, the top section p having the steam pipes p and sections a having the return pipes to, substantially as described. 2nd. The combination of the vertical and horizontal water sections a, a and f, and the flue plates, p, said section e being arranged between the sections a and flues I1, and section f arranged ever the flue plates g, having passages a arranged to cause the heat currents to impinge on the middle of the bottom of said section substantially as described. 3rd. Thes combination of flue plates t, with the water sections f, g having flues j and the smoke pipe e, said plates t being arranged to project. the heat downward on, the upper side or section f and upward against the bottom of section g, substantially as described. 4th. The combination of the vertical and horizontal water sections a, e, f and g circulating tubes 1, m 0 and n, flue plates p and t and an enclosing jacket i k, substantially as described. 5th. The combination of the base d having top plates e, and the case i. k. with the vertical and horizontal water sections a, e, f and g, circulating tubes 1, m, o and n and flue plates g and,.t. said water sections being arranged with flues h and j, substantially as described.