US48067A - Improved boiler for steam-heating - Google Patents

Description

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HENRY `HONVVARD, OF VESTFIELD., MASSACHUSETTS.

iMPROVED BOILER FOR STEAM-HEATING.

Specillicaton forming part of Letters Patent No 4&067. dated .linne (i, 18d?.

T0 all whom, t may concern.-

Be it known that I, HENRY Hownn'n, of Vestiield, in the county of Hampden and State .of Massachusetts, have invented a new and Improved Boiler for Heating Vater and Generating Steam, which is more especially designed for warming purposes; and Ido hereby declare that the following is a full, clear, and 'exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure l is a side elevation of one of my improved steam-boilers, the side of the furnace being removed to show the position and arrangement of the boiler therein. Fig. 2 is a vertical section through the boiler-in the line .r m of Fig. l. Fig. 3is asimilar section, showing `the manner of combining two or more of my improved boilers together within one furnace; and Fig. 4 is a top view of two ofthe boilers combined, illust-rating more clearly the manner of connecting them.

Similar letters indicate like parts in all of the figures. Y

The nature of my invention consists of a boiler for heating water and generating steam, so formed and constructed as that its sides, when placed against the corresponding sides of similar boilers or against the perpendicular plain wall of an inclosingfurnace, shall constitute, in combination therewith, (and partially embrace) two or more longitudinal flues to conduct the iiame and heat of the fire backward and forward over nearly the entire exterior surface of the boiler. I have sought by this invention to produce very cheaply edicient boilers, which may not only be used singly, but may be also readily combined with each other in one furnace, as a greater or less extentof boiler-surface is required, the peculiarity of their form being such as that each individual boiler, used either independently or as one of a series, shall, when properly set, be encompassed by a flue passing over nearly its entire surface.

The Igeneral shape of my improved boiler A is that of a long parallelogram, and its conguration is shown by the side elevation thereof in Fig. l and the vertical section in Fig. 2 of the drawings. It maybe economically cast in one piece upon a suitable core, or it may be ibrmed of rolled iron plates properly riveted together.

When cast, the core is removed through pipe-holes B and'C, formed in thesides of the boiler, in its upper and lower front corners. rlhe `parallel recesses a and b, which eX- tend longitudinally along the sides of the boiler, as seen in the drawings, form fluespaces for the vpassage of the heat and iiame from the fire. Thenarrow flanges c c, which project beyond the sides of the boiler, serve as partitions between the lues, dividing them from each other, and which, by preventing the direct upward passage of the heated air from the furnace, cause it to sweep in a current backward and forwardover the sides and ends of the boiler from the bottom to the top thereof, as indicated by the arrows in Fig. 1. Vhen one boiler only is used, these flanges c c rest closely against the sides of the furnace, as seen in Fig. 2. Plates d cl may be inserted in the brick wall and received into grooves formed in the anges c c, so as to form a more close joint therewith, if desired. Vhen :an increased water-heating surface is desired, it is only necessary to place two or more of these boilers side by side within a suitable furnace, the entire number required being cast from the same pattern. Vhen so placed, the flanges c c, coming in contact with each other, complete the iiues c c and b b, as illustrated by Fig. 3, the joints between the anges being closed with any cheap iron cement. Vertical ilanges e e., placed at the rear ends of the lower flue-recesses, a a, divert the iiame down, so as that it shall pass under the lower rear end of the boiler, as seen in Fig. l, and also form a pocket in this lower fiue to concentrate, to a certain extent, the heat ofthe fire at this point.

rlhe pipe-apertures B and C are formed through bosses so cast as to give the thickness required to obtain a good screw-seat for the ends of the water and steam pipes to be coni nectcd with the boiler. The water-supply pipe E, (red lines, Figs. 2 and 3,) connected with the main reservoir, is attached to the lower pipe-aperture, B, upon one side of the boiler, and the pipe F, returning the condensed steam from the radiators, (where the boilers are used for warming purposes,) is connected to the lower aperture, B, upon the other side of the boiler. The main steam-pipe G is con nected to the upper aperture, C', of theboiler upon the same side as the condensing-pipe F,

while a pipe, H, connecting with a Suitable automatic fire-regulator, (Clarks.patent,) is attached to the opposite aperture, C.

Vhere two or more boilers are used in combination, as shown in Figs. 3 and 4, they are connected by means of suitable pipes, K K, Fig. 4L, placed between the opposite adjacent pipe-apertures above and below, (see the red dotted lines in Fig. 8,) so that the water and steam may pass freely from one boiler to the other.

The boiler A, Figs. 1 and 2, (or the series of connected boilers A A A, Fig. 8,) are supported in the furnace D by means of projections S S. cast upon the front and rear ends of the boiler, as seen in Fig. l. These projections rest upon bars V WV, inserted in the front and rear walls of the furnace, and are pierced with apertures, through which a bolt may be passed for additional security.

It will be observed that the direct and more intense heat of the re is exerted upon the cold water entering thelower part of the boiler, and that the current of `heat (gradually losing its intensity) passes through the upper iiue around the steam-space in the upper part of the boiler, so as to superheatthe steam formed therein. The current of heat in passing over the boiler strikes more directly against the roof of the furnace, so as not to effect the top plate, although it serves still to keep it properly heated.

Having thus fully described iny invention, what I claim therein as new, and desire to secure by Letters Patent, is-

The boiler A, for heating water and genen ating steam, when formed, constructed, and arranged substantially in the manner herein set forth.

HENRY HOXVARD.

Vitnesses:

DAVID A. BURR, RANDOLPH CoYLn, Jr.

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