US1209070A - Boiler-furnace. - Google Patents

Description

l. SWANSON.

BOILER FURNCE.

APPLICATION FILED MN.H,1916.

1,209,070. Patented Dea-19,1%. 2 SHEETS-SHEET l.

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l. SWANSON.

BOILER FURNACE.

APPLICATION FILED 1m17.191s.

lig-- Patented Dec. 1 9, 1916.

`2 SHEETS-SHEET 2.

.ToHN swANsoN, or MOBILE', ALABAMA.

BoILER-FURNACE. o j

Specification of Letters Patent.

Patented Bec. 1%, 1916.

f Application filed January 17, 1916. Seria1No.-.72,566.

To all 'whom t may concern Be it known that I, JonN SwANsoN, a citizen of they United States, residing at hffobile, in the county of Mobile and State of Alabama, have invented new and useful lm .provements in Boiler-Furnaces,.r of which the following is a specification.

rlhe present invention relates to improvements in boiler furnaces. i

In carrying out my invention it is my purpose to construct a furnace for boilers wherein the heat units will be distributed to the top and sides of a furnace wallso thatY the water at the bottom of the boiler will be heated simultaneously with the water at the top and sides Vof the furnace and whereby a proper circulation of the water under the bottom of the furnace will be created.

It is also my purpose to construct atubular furnace for boilers including angulaiside grates and a connecting dome grate each adapted to receive a bed of fire, the arrangement being such as to materially in-V crease the heating capacity as compared with the ordinary construction of such devices.

A further object of the invention is to construct a tubular furnace and to arrange the same longitudinally of a boiler, to provide the furnace with a plurality of angularly arranged side grate members and an arched. grate member connecting the upper side grates, each of the grates receiving a fire bed and the upper arched shaped grate comprising movable members which may be arranged to bring the lire in close contact with the top of the furnace to create a greater or determined amount of heat at this portion of the furnace. Y

With the above and other objects in view, the improvement resides in the construction, combination and arrangement of parts set forth in the following specification and fall-v ing within the scope of the appended claims.

In the drawings, Figure l is a view of a boiler provided with my improved furnace, Fig. 2 is an enlarged horizontal sectional view approximately on the line 2-2 of Fig.y l, Fig. 3 is a vertical longitudinal sectional view on an enlarged scale, and taken approximately on the line 3 3 of Fig. l. Fig. 4 is a transverse sectional view approximately on the line 4.--4 of Fig. 3, Fig. 5 is a perspective view of a portion of the tubular furnace and the grate therein, and Fig. 6 is a view illustrating the upper grate members raised to bring the lire close to the top of the furnace. p

Referring now to the drawings in detail,

vthe numeral 1 designates a tubular steam boiler, and arranged adjacent thebottom of the boiler and extending longitudinally therewith isa pair of spaced tubes 2 2. Each of these -tubes 2 provides a casing for the furnace, and the outer vends of each of the tubes is closed by a plate 3 having an enlarged opening adjacent Vthe upper end thereof closed by a door l and a. smaller side opening closed by doors as well as a central opening closed Vby a door G.

Arranged in each of the casings 2 .is a

grate of peculiar formation constructed in accordance with my invention. The grate is constructed to provide `a plurality o f fire boxes, and inreality a plurality of grates. The grate sections ycomprise side members and an upper arched connecting member. The sides, in the showing of the drawings, include two grates each comprising a horizontal shelf and an obtuseangular extension terminating in a flat plate or sidemember vwhich projects above and is connected with Y the superimposed shelf of the upper grate, and the side members of the `said upper shelf are likewise connected to or form a support for the longitudinal edges of the said upper grate.

The lower shelf members, indicated .by

the vnumerals 7, rest upon transverse cleats 8 disposed upon the inner end of the furnace casing, and which may `be likewise' disposed at other points best suited forV supporting the said shelves 7. The grate members' are of the herring-bone class and the inner ends of each of the shelves 7 is formed with an inwardly extending upwardly inclined grate extension 9 that terminates inaco-extensive flat non-pervious side 10. The side 10, at its opposite ends, is provided with angularly arranged ears 11 that are bolted to the end plates of the furnace, and the sides 10project a suitable distance above the horizontal shelves 12 of the upper side grate members. The ends of these grate members are supported upony the transverse cleats 13 arranged-'at the ends of the tubular furnace and one of the longitudinal edges of each of the shelves 12 contacts with the side plates l0 of the respectivey grates 7 The grates of the shelves 12 are also of the her-V ring-bone construction, as kare their inwardly eXtending angularly arranged portions 14. The angular portions 14 terminate in coextensive non-pervious fiat plates 15 which have their ends provided with ears 16 which are bolted to the end plates of a furnace, and the sides 15 extend a suitable distance above the longitudinal ends of the dome-shaped upper grate 17. The grate 17 has its longitudinal edges contacting with the side plates 15 and its ends are supported upon curved cleats 18 which are secured to the opposite ends of the furnace. The upper dome-shaped grate 17 is also of the herring-bone construction and preferably comprises two grates 19 and 20 respectively, and these grates may be raised toward the top of the furnace to bring the bed of fire closer to the said top so that a greater amount of heat may be thus applied to the top. rlhe ash pit, indicated by the numeral 21, is disposed below the grates. To operate the grates 19 and 20, a rod a may be journaled in suitable bearings and have eccentrically arranged thereon Wheel or roller members b. The end of the rod a may extend through a suitable opening in the outer face of the boiler and is shaped to receive the angular socket of an ordinary shaker handle. When the rod is revolved in one direction the cam or eccentric members b will contact with the grates 19 and 20, and when the rod is revolved in the other direction, the grates Will drop by `gravity upon their supporting cleats 18.

The ashes and clinkers from the grate members 19 and 20 which do not fall directly into the ash pit 21 Will contact With the inclined sides 15 of the upper grate members 12 and be directed thereby to the center o-f the ash pit. The ashes Which fall from the grate 12 Will contact With the angular sides 10 of the grate 7v and Will likewise be centrally delivered to the ash pit 21. The doors 5 provide admission to the fire boxes for the grates 7 and 12, the door A l for the central grate 17, While the door 6 closes the entrance to the ash pit. f

From the above description, taken in connection With the accompanying drawings, the simplicityl of the device, as Well as the advantages thereof will, it is thought, be perfectly apparent to those skilled in the art to which such invention appertains Without further detailed description.

Having thus described the invention, What I claim is:

1. AIn a furnace fo-r boilers, a tubular casing, spaced side grates in the casino', said side grates including each a horizontally straight grate portion, an angular grate portion connected With the inner end thereof and overlying the said shelf, a non-pervious side plate co-eXtensive With the angular grate portions and extending above the horizontal shelf portion of the adjacent grate, and an upper grate member connected with the upper side plates.

2. A grate for boilers including a tubular casing, side grates in the casing, each of said side grates including horizontal grate bars and angular grate bars formed in the inner ends of said horizontal grate bars and eX- tending angularly over the saine, non-pervious side plates co-extensive with the angular grate bars and projecting above the horizontal members of the adjacent grate sections, and a dome-shaped grate connecting the side plates of the upper grates below the upper edges of the same.

3. A grate for boilers including a tubular casing, side grates in the casing, each of said side grates including horizontal grate bars and angular grate bars formed at the inner ends of said horizontal grate bars and extending angularly over the saine, nonpervious side plates co-eXtensive with the angular grate bars and projecting above the horizontal members of the adjacent grate sections, and a dome-shaped grate connected with the side plates of the upper grates below the upper edges of the same, said dom shaped gratecomprising a plurality of independent members.

In testimonyV vvhereof 1 affix my signature in presence oftWo Witnesses.

JOHN SWANSON.

Witnesses:

WILLIAM J. NonviLLn, HENRY NEVILLE.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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