US536041A - William h - Google Patents

Description

(No Model.)

W. H. PAGE. DOME FOR STEAM BOILERS. Y No. 536,041 Patented Mar. 19, 1 895.

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` G I IQ *f Timms STATES aTnNr este@ WILLIAM H. PAGE, OF NORWIOH, CONNECTICUT, ASSIGNOR vTO THE NVM. H.

PAGE BOILER COMPANY, OFSAME PLACE.

DOME FOR STEAM-solteras.

SPECIFICATION forming" part f v:Letta-22653Pra'telvlt N0. 556,041, dated March 19, 1 895. Application filed January 9, 1895. i Serial No. 534,373.A (No model.)

To all whom it may concern:

Be itknown that I, WILLIAM'H. PAGE, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Domes for Steam-y Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use t-he samen 4 My invention relates to steam and hot water boilers of that class technically known to the art as sectional boilers, in which the structure is built up of a number of cast metal sections to produce the tire pot, the water containing sections and a dome section, which sections are superposed one uponrthe other and suitably united together.

The special feature of the improvement contemplated by this invention relates to the'top section or the steamdome section,`cast in a single piece of metal, and comprising upper and lower walls substantially parallel to each other, an annular vsurrounding wall which joins the edges of said horizontal walls and forms a chamber therewith, a central water opening or nipple in the lower horizontal wall, and vertical smoke flues arranged in circular series around said central opening or nipple and joined to the top and bottom walls through which said smoke fines open, whereby the products of combustion are carried by the smoke fines through the steam dome, and the water and steam from the other sections of the boiler are free to pass and circulate through the central opening or nipple in the lower wall of the section.

To enable others skilled in the art to which this invention relates to more readily understand my improvement, I have shown the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, and in which- Figure l is a vertical sectional elevation of one type of sectional boiler in vwhich my improved steam dome section is used. Fig. 2 is a detail perspective view of the dome section detached. Fig. 3 is a sectional View of another type of sectional boiler with which my ydome section may be advantageously combined. Like letters of referencedenote corresponding parts in all the figures .of the drawings.

A denotes my improved dome section which is cast in a single piece of metal. This section consists of the upper horizontal wall, a., the lower horizontal wall b, the annular vertic'al wallfc, a series of vertical smoke pipes d, and a central opening or nipple e in the lower wall b, within the circular series of smoke pipes d, and concentric therewith. The horizontal walls a, b, are substantially parallel to each other, and the annular inclosing wall c lies substantially at right angles to the walls a, b, although saidannnlar wall c may be slightly inclined, as shown by Fig. l, to give to the dome a tapered form in vertical section, whereby the diameter of the dome A at its upper part is somewhat in excess of the lower end of the dome. This annular vertical wall c, is joined to the edges of the top and bottom, o., b, and it forms therewith a chamber, G,`in which is contained the hot water and steam of ythe boiler. The vertical smoke pipes are arranged in circular series around, and concentric with, the central opening or nipple ein the lower Wall b of the dome section, and said smoke pipesare integral with the walls a, b, of the section. The ends of the pipes d open through the top and bottom of the section, and theyserve as smoke fines to carry the smoke and products of combustion through the steam and hot water chamber G ofthe domesection, thereby ntilizing the heat to the best advantage. The opening e in the bottom of the section is preferably bounded by a flange f which depends below the wall b and produces the nipple, the latter affording a convenient means for the attachment of the water heating sections of the boiler to the top or dome section A.

In Fig. l of the drawings I have shown my improved dome section A combined with two Water heating sections H and I, a iire pot sec- 9 tion J, and a masonry inclosing wallK. The crown sheet of the fire pot is formed by the lower solid wall of the section I, and the section H has nipples at its top and bottom which are coupled, respectively, to the nipple f of roo section A and to the nipple on the upper side of the section I. The section I-I has transverse smoke 'lues, h, formed in it, which tlues h are in vertical alignment with the circular series of vertical smoke fines d of my improved steam dome. The wall of masonry K surrounds the sections of the boiler, and it is surmounted by a cast metal cap 7a which forms the smoke space, from which leads the exit pipe 7c.

The dome section A has flanged openings, g, to which are coupled the circulating pipes G', one of which is shown in Fig. l.

In Fig. 3 of the drawings I have shown the dome section combined with portable sec tional boilers. In the type of boilers shown by this figure, the smoke is compelled to circulate in or take a tortnous course through the boiler, and this is produced by combining with the dome A, the fire pot J, and the inclosing casing L, certain forms of water sections M, N, which are different in diameter and situated in alternate relation to one another. 'The larger sections fm are provided with transverse smoke dues M which extend through them, and each section is of such diameter as to fit closely against the inclosing casing. The smaller sections N present practically continuous surfaces to the dame, heat, the., and they are of less diameter than the sections m, so that the products of combustion are compelled to pass along the bottom sides of the sections N, up and around the edges thereof, and then pass toward the center oi' the boiler, and up through the smoke lues M in the next upper section, m, of the boiler.

In Fig. 3, I have shown the smaller heat deliectng section, N, next to the dome section, A, to cause the heat and products of combustion to pass around the edges of said section, N, and thence inwardly over the section N to the smoke fines in the steam dome. In Fig. I, however, I have illustrated the deflecting and fiue sections transposed, that is, the flue section is next to the steam dome, and the de- Iiecting section is below the tine section. This arrangement of sections causes the products of combustion, after passing around thelower detlecting section, to circulate between the two sections, and thence pass through the smoke ues in boththe iiue section and the dome section, a part of the heat and products of combustion also passing around the dome section because there is a space provided between the dome section and the surrounding or inclosing walls of the furnace, as clearly shown.

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

A dome section A, cast in a single piece, having the top and bottom Walls a, b, joined at their edges by an annular wall, c, and forming the steam and water chamber, a central opening or nipple, e, in the bottom b, and a circular series of vertical smoke pipes d concentric with the opening or nipple e, the ends ot' said smoke pipesy opening through the top and bottom, av, b, of said section, as set forth.

In testimony whereof I aix my signature in presence of two witnesses.

WILLIAM H. PAGE.

Witnesses:

LUoIUs BROWN, HIRAM R. MILLS.

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