US486854A - Boiler-furnace and smoke-consumer - Google Patents

Description

(No Model.) 2 Sheets-Sheet '1.

J. GONNELLY. BOILER FURNACE AND SMOKE CONSUMER.

No. 486,854. Patented Nov. 29, 1892 (No Model.) 2 Sheets-Sheet 2.

J. OONNELLY. I BOILER FURNACE ,AND SMOKE CONSUMER. No. 486,854. Patented NOV. 29, 1892.

UNITED STATES PATENT OFFICE.

JAMES CONNELLY, OF DES MOINES, IOWA.

BOILER-FURNACE AND SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 486,854, dated November 29, 1892.

Application filed March 14, 1892- Serial No. 424,903- No model.)

To all whom it may concern:

Be it known that I, J AMEs CONNELLY, a citizen of the United States of America, residing at Des Moines, in the county of Polk and State of Iowa, have invented a Boiler-Furnace and Smoke-Consumer, of which the following is a specification.

My invention consists in the arrangement and combination of an air superheater and distributer in a bridge-wall, an arch over the bridge-wall, an arch over the grate, an airpassage extending from the front wall through the two arches to communicate with the airsuperheater and distributer, a fuel-magazine, and mechanism for feeding fuel to the grate through the arch over the grate, as hereinafter set forth, in such a manner as to promote the durability and efficiency of the furnace, to save time and labor in its operation, and to prevent the annoyances and waste of valuable products of combustion incident to the escape of black smoke and soot.

In the accompanying drawings, Figure 1 is a vertical longitudinal sectional elevation of the complete furnace. Fig. 2 is a transverse vertical sectional elevation on the line w of Fig. 1. Fig. 3 is a perspective view of the perforated air distributing pipe detached from the furnace. Fig. tis a perspective View of the air-conductingpipe detached from the furnace; and Fig. 5 is a transverse sectional view thereof, showing the opening through which fuel is fed to the grate.

In the construction of the furnace as shown the numeral designates the side walls of the furnace proper, and 11 the bridge-wall thereof. An arch 12 is formed over the combustionchamber, the keystone of which arch is a tubular pipe 13, Fig. 4. The pipe 13 is provided with a partially-inclosed vertical aperture 14, through which fuel passes from the magazine 15 into the combustion-chamber and upon an arched fire-grate. This tube 13 is preferably made of fire-clay and is adapted to serve as a keystone in the arch, as a vertical passage-way for fuel, and as horizontal passage-ways for air. A gate 16, diamond-shaped in cross-section, is fitted within the aperture 14 and has fixed thereto ajointed vertically-reciprocatin g pitman-rod 17 the upper end of which rod is pivotally connected to a wrist-pin 18 on the wrist-wheel 19. The

opens into the upper end of a distributingpipe 25, located in the said bridge-wall,to extend downward from the central part of the arch over the bridge-wall and terminate within the bridge-wall in such a manner that the products of combustion rising from the grate will envelop the exposed and perforated portion of the said pipe, so that it will serve as an air superheater and distributer and discharge heated air from each of its four plain sides to mingle with the products of combustion and promote the combustion of all the valuable carbonaceous gases and particles liberated by fire from the fuel on the grate. The pipe is provided on all sides with a series of perforations 26, through which the atmos pheric air escapes.

The numeral 27 designates a boiler supported above a hot air chamber, through which the heated air passes onits way to the boiler-tubes 28 and to a point of exit through the draft-flue 29. I

Openings 30 in the front 31 of the furnace admit air to the passages 32, from whence said air passes through the conduits 33 and exitopenings 34 into the ash-pit beneath the arched fire-grate, thus providing draft for the fuel.

The fire grate is composed of a plurality of bars 35, triangular in cross-section, each journaled at one end in the front 31 of the furnace and at the other end in the support 36, fixed to the bridge-wall 11. The ends of said grate-bars 35 project through the front 31 and are provided with intermeshing gear-wheels 37, one of said wheels being rotated by power manually applied to a crank 38, fixed to the projecting end of the upper one of the series of bars. 3

Doors 39 in the front 31 of the furnace provide means of access to the combustion-chamber above the arched lire-grate.

Doors 40, provided with registers 41, are located in the front 31 of the furnace and provide access to the ash-pit.

The fuel is deposited on the arched grate by the automatic elevation of the gate 16, and the products of combustion pass rearwardly and on either side of the pipe 25, there commingling with the superheated atmospheric air exuding from the perforations 26, forms an inflammable gas, which in burning entirely consumes the said products of combustion.

WVhen it is desired to remove the ashes and clinkers from the arched fire-grate, the bars comprising said grate are rotated and the clinkers comminuted and ground up thereby fall with the ashes through the spaces between said bars into the ash-pit, from whence they may be removed through the doors 40.

Having thus described my invention, what I claim as newtherein, and desire to secure by Letters Patent of the United States therefor,

1. In a furnace, an arch over the grate, a pipe adapted to serve as a keystone in the top of said arch and provided with a longitudinal opening or passage-way for fuel, and air-passages at the sides of said opening, a

fuel-magazine in the form of a hopper communicating with said fuel passage-way in said pipe or keystone, a gate fitted in the bottom of said magazine, and means for operating said gate at intervals, arranged and combined to operate in the manner set forth, for the purposes stated.

2. In a furnace, a pipe having air-passages at its sides and vertical openings in its center and adapted in shape to serve as a keystone, in combination with an arch over a grate, an arch over a bridge-wall in rear of the grate, and an air superheater and distributer extending vertically from the bridgewall into the arch over the bridge-wall, and an air-passage extending therefrom through the arch to the rear end of the air-passage in the pipe that serves as a keystone in the arch over the grate, to operate in the manner set forth, for the purposes stated.

3. An improved furnace comprising parallel walls, a bridge-wall between said' Walls, a grate in front of the bridge-wall, an arch over the grate, an arch over the bridge-wall, an air superheater and distributer extended vertically from the center of the bridge-wall into the arch over the bridge-wall, air-passages extending horizontally through the arch over the grate and vertically through the arch over the bridge-wall to convey air into the said superheater and di'stributer, a fuel magazine or hopper above the arch over the grate, a passage for fuel in said arch, a gate having inclined sides suspended in the bottom of the hopper, and means for raising and lowering the gate, all arranged and combined in the manner set forth, for the purposes stated.v JAMES OONNELLY. Witnesses:

J. RALPH ORWIG, THOMAS G. ORWIG.

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