US354057A - John ham - Google Patents

Description

(No Model.)

J. HAM.

BOILER PURNAUE.

No. 354,057. Patented Dec. 7, 1886.

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JOHN HAM, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE HAM COAL SAVING COMPANY, OF NEWV YORK, N. Y.

BOILER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 354,057, dated December 7, 1886.

Application filed April 15, 1886. Serial No. 199,018. (No model.)

To all whom it may concern.-

Be it known that I, JOHN HAM, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Boiler-Furnaces, of which the following is a specification.

This invention has for its object to provide a novel device for supplying heated air to air-distributors situated in the fire-chamber above the grate-bars. the construction of said device being pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which- Figure 1 represents a sectional front view. Fig. 2 is a sectional side view in the plane a: m, Fig. 1. Fig. 3 is a horizontal section in the plane y y, Flg. 2.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a steatn-boiler extending over the fire-chamber B and combustion-chamber O. The products of combustion pass, as indicated by the arrow in Fig. 2, from the fire-chamber through the flue-passage D, over the bridge wall E, through the combustion-chantber to the rear of the boiler, thence through the holler-tines F into I the uptake-flue G, and thence through the connecting uptake-pipe H into the smokeflue I, and thence to the chimney. (Not shown.) The fine extends above the boiler, and may serve as the due to two or more firechambers or furnaces, if desired. In this exampletwofurnaces, each with its steam-boiler, are shown with the flue I arranged above.

Upon one side of the discharge-flue I is a chamber, J, formed in this example by riveting to the flue the flaring edges of a plate bent outward so as to form an air space or chamber, J, between it and the side of the fine. The left-hand end of the flue I is closed, as is the left hand of the-chamber J. The chamber J extends nearly to the other end of the flue I,.and its right-hand end is open to admit the entrance into it of the atmospheric air, which passes through it to the connecting-pipe K, and through it to the return l hotair pipe L, which extendsalong the front i of the air-chamber J nearly to its open end, or as far as the furnaces extend in that direction. The hot-air pipe L is closed at both ends, and from it extend pipes M, which conduct the hot air from it down into air-distributers N, arranged in the fire-chamber or in the walls of the fire-chambers.

The air -distributers consist of boxes arranged in the fire-chambers, preferably in the side walls, extending from the front as far as or nearly to the bridge-walls, and perforated on the inner side, or the side nearest to the grate, with numerous holes, through which the hot air discharged into them through the airpipes M is distributed and discharged into the fire-chamber.

By the means above described the products of combustion which pass into the flue I are used to heat the air which passes through the air-chamber J, so that when the current of air which enters that chamber at its righthand end reaches its other end and passes through the connecting-pipe K into the pipe L it will have become more or less heated, and consequently is in a. favorable condition as to temperature for being discharged into the furnace through the distributing-pipes M and the perforated distributing boxes N. The operations of the furnace are thus facilitated, and a more perfect combustion of the fuel and an increased production of steam obtained than has been heretofore realized in boilerfurnaces of this description, and these results are reached withoutarresting the discharge of the products of combustion or injuriously interfering with the construction or proper operation of the apparatus.

What I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with a boiler-furnace, and with air-distributers situated in the firechamber thereof above the grate bars, of an air-heating chamber formed onthesmoke-fiue f and open at one end and closed at its opposite end, a hot-air pipe which opens into the air-heating chatnber, near the closed end thereof. and branch pipes leading from the hot-air pipe to the air-distributers,substantially as shown and described.

2. The combination, with a boiler-furnace, and with air-distributors situated in the side walls of the fire-chamber above the level of thefire-grate,0fan air-heatingchamberformed In testimony whereof I have hereunto set on the smoke-flue and open attone end and my hand and seal in the presence of two subclosed at its opposite end, a hot-air pipe openscribing witnesses.

ing intothe air-heating chamber near its closed JOHN HAM. s] 5 end, and branch pipes leading from the hot- Witnesses:

air pipe to the air-distributer, substantially as W. HAUFF,

shown and described.

OTTO HUFELAND.

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