US454350A - Steam-boiler furnace - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

M. E. HERBERT. STEAM BOILER FURNAGE. No. 454,350. Patented June 16, 1891.

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(No Model.) 2 Sheets-Sheet 2.

M..E. HERBERT. STEAM BOILBR PURNAGB.

Nof 454,350. Patented June 16, 1891.

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UNITED STATES PATENT OFFICE.

MICHAEL E. HERBERT, OF ST. JOSEPII, MISSOURI.

STEAM-BOILER FURNACE.

SPECIFICATION' forming part of Letters Patent No. 454,350, dated June 16, 1891. Application filed September 11, 1890. Serial No. 364,697. (No model.)

To ctZZ whom, t may concern.'

Be it known that I, MICHAEL E. HERBERT, of St. Joseph, in the county of Buchanan and State of Missouri, have invented a new and useful Improvement in Steam-Boiler Furnaces, of which the following is a specication.

My invention relates, generally, to steamboiler furnaces, and more particularly to certain improvements upon Patent No. 31,591,863, granted me February 1S, 1800.

The objects of my invention are, first, to provide a steam-boiler furnace that shall give great heat capacity and shall insure an economy in the consumption of fuel by burning the smoke and gases arising from the fuel; second, to provide an improved boiler-furnace which may be used in connection with an ordinary tubular boiler or any other type of boiler, and, third, to provide a furnace that shall be easy of operation and substantial in construction.

Vith these objects in view my invention consists of a fire-box divided into two compartments by a water-leg, water-legs forming the sides of said fire-box, a feeding-grate adapted to carry the fuel from one compartment to the other, and passages surrounding the fire-box for conducting the smoke and gases to be consumed.

My invention consists, further, in the peculiar constructions of various parts and their novel combination or arrangement,A whereby the various objects are accomplished, all of which will be more fully hereinafter described, and designated in the claims.

In the drawings forming a part of this specification, and in which the same letters of reference indicate the same parts, Figure 1 is a transverse vertical section of my improved boiler-furnace on the line :n no, Fig. 2. Fig. 2 is a longitudinal vertical section.

In the practical application of my invention I employ a flue-boiler B of any preferred pattern, which is set in the casing or brickwork A and provided with a front Z). The forward end of the boiler does not extend to the furnace front. Tater legs or chambers C are arranged on each side of the boiler at the forward end of the same, said water-legs being independent of and extending some distance below the boiler and forming the sides of the fire-box of the furnace.

A wall D, of fire-brick or other suitable material, is arranged between the boiler-head and .furnace front adjacent to the front, or, if desired, a water leg or chamber may be employed instead of a solid refractory wall. A water-leg E depends from the forward end of the boiler, extending into the fire-box a considerable distance, said water-leg being connected with the side legs C intermediate their ends, thus dividing the fire-box transversely into two compartments-a forward and rear one. '.lhe side legs extend only as far forward as the wall D, but extend rearward beyond the combined water-drum and bridgewall F, which is also connected with said side legs or chambers. The dependinglegE is connected with the legs C forward of their vertical centers, thus forming a narrow magazine and feed-chute G between the front wall and said leg.

The furnace front is provided with the upper and lower doors Hand Il', respectively, said doors communicating with the fire-box, the purposes of which will appear farther on. The upper door is also provided with perforations 7L. A plate I is arranged over the forward compartment of the fire-box, said plate forming the base of the smoke stacker iiue S.

A compound grate K is arranged in the bottom of the fire-box, said grate comprisingl a feeding portion K and a dumping portion Y2. The boiler B and side legs or chambers C are connected with each other by the tubes M, which pass through the forward compartment of the fire-box. The side legs or chambers rest upon the upper edges of the ashreceptacle, said receptacle having a downwardly and forwardly inclined bottom Z, and is provided with` a door Z forward of the furnace front, whereby the ashes may be removed. The casing or brick-work is of course closed at the top either Vby plates or other means, and at the rear is provided with an arch A2. Fines or passages A are formed between the side legs and casing and the front wall D and furnace front. The wall l) is provided with a series of perforations d, and the portions of the side legs C forward of thc leg E are provided with a series of tu- IOO bular stay-bolts e, thus forming a communication Vbetween the chute and passages A. The flues or chambers A extend down below the grate, and the sides of the ash-receptacle are also perforated, as shown .at Z2. The boilerand side legs are also connected by means of the tubes N, and a series of circulation-tubes O are connected with the rear end of the boiler, whereby a thorough circulation of water is maintained.

The method of operating my improved furnace is as follows: Fuel is introduced through the upper door H and passes into the chute G and forward compartment. Any desired quantity of fuel can-be fed into the rear compartment. Air is admitted through the perforations h in the door H, and, mingling with the fresh fuel, produces gases and smoke, which pass through the perforations d and c, down the ilues A', through the perforations Z2 beneath the grate, thence up through the grate-bars covered with live coals, when the gases and smoke are consumed,the products of combustion passing over the bridge-wall and water-drum, under the arch A2, through the iue or tubes S, and out through the stack S. When it is desired to remove ashes, clinkers, the., the dumping-grate is rotated, discharging the ashes into the receptacle Il, and live coals are fed to the rear compartment to take the place of those discharged, and when it is necessary to use a poker the lower door II is thrown open and the poker inserted and raked backward and forward.

By means of the feeding-grate the fire-box is uniformly supplied with live coals, and by perforating the forward wall, side legs, and ash-receptacle and arranging the passages as described the gases and smoke of the magazine are returned and consumed. The waterleg E exposes a great deal of surface to the heat and also divides the fire-box.

Having thus described my invention, what I claim as new is 1. In a steam-boiler furnace, the combination, with the perforated side water-legs of the fire-box connected with the boiler, of the depending water-leg communicating with the side Water-legs intermediate their ends and the forward lire-box wall independent of the furnace front, substantially as shown and described.

2. In a steam-boiler furnace, the combination, with the side water-legs of the fire-box, of a refractible forward fire-box wall, and the depending leg portion communicating with the side legsintermediate their ends and dividing the fire-box transversely into two compartments, substantially as shown andr described.

3. In a steam-boiler furnace, the combination, with the perforated side water-legs, the perforated forward fire-box wall, and the imperforate depending water-legcommunicating with the side waterdegs intermediate their ends and dividing the fire-box into two com-v partments, substantially as shown and described.

el. In a steam-boiler furnace, the combination, with the side legs, of the depending legs connecting` the same, the feeding-grate, the perforated forward wall, flues or passages between the casing and forward wall, and the ash-'receptacles having perforated sides, substantially as shown and described.

5. In a steam-boiler furnace, the combination, with the side water-legs, the depending water-leg connecting said side legs with the forward wall of the fire-box, the feeding-grate, the doorleading into the fire-box, the portions of the side legs between the forward wall and depending leg being perforated, the iiues arranged adjacent to said portions, and the ashreceptacle having perforationsin its sides beneath the grate, substantially as shown and described.

6. In a steam-boiler furnace, the combination, with the side water legs or chambers, the depending water-leg connecting said side legs, the perforated forward lire-box wall,the side legs having perforations between the forward wall and depending leg, the feed-door communicating with the firebox and having perforations for the admission of air, the combined feeding and dumping grate, the fiues between the side legs and front wall and casing, and the ash-receptacle having perforations below the grate, substantially as and for the purpose described. y

7. In a steam-boiler furnace, the combina tion, with a nre-box, of a depending waterleg dividing said box into two compartments,

one of which is a perforated magazine-chute, compartment, flues, or chambers surrounding the fire-box, and communication with the perforated magazine-chute, substantially as shown and described.

MICHAEL E. HERBERT.

Vitnesses:

M. J. BLooMER, E. L. WARREN.

IOO

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