US551057A - Furnace - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

H. STANTON.

FURNACE.

No. 55 1;057. Pa gented Dec. 10, 1895.

$144 m W W ANDREW EGHAHAMFI'IOTO-LITNQWASHINGTOKQC.

(NoM odeL) 5 I 'H'. STANTON.

FURNACE. No. 551,057. Patented Dec. 10,1895.

ANDREW B.GRAHAM. PHUTO'UTNQWASHINOTUNJL.

2 sne i ssneet 2.

UNITED STATES PATENT ()FFICE.

HENRY STANTON, OF FLUSHING, OHIO.

FURNACE.

SPECIFICATION forming part of Letters Patent N 0. 551,057, dated December 10, 1895.

Application filed January 29,1895. Serial No. 536,595. (No model.)

T0 at whom it may concern:

Be it known that I, HENRY STANTON, a citizen of the United States, residing at Flushing, in the county of Belmont and State ofOhio, have invented certain new and useful Improvements in Furnaces, of which the follow ing is a specification, reference being had therein to the accompanying drawings.

This improvement is designed to provide a hot-air furnace which shall be easily built, readily repaired, and kept gas-tight, adapted to be used either with or without ahot-water system and at the same time be convenient and economical in use.

To this end the invention consists in the peculiar construction, arrangement, and combinations of parts hereinafter described and then definitely claimed.

In the accompanying drawings, Figure 1 is a vertical central cross-section of a hot-air furnace without the water-heating apparatus, constructed according to my invention. Fig. 2 is a central longitudinal vertical section of a very similar furnace with the hot-water system added. Fig. 3 is avertical cross-section of the furnace shown in Fig. 2, taken on the line 00 00, Fig. 2. Fig. iis ahorizontal section taken on the line 'y' y, Fig. 2. Fig. 5 is a detail showing in reversed plan the shape of the central arch-bricks in Fig. 1.

Referring now to the details of the drawings by figures, 1 represents a horseshoe-shaped iron or steel shell, which I shall hereinafter term a metal arch, secured at each end to heads 2 3, preferably of cast-iron, having flanges 4. extending outward, to which the metal arch 1 is attached by bolts 5. The bottom of this arch is also bolted to a base-casting 6, having upturned flanges '7. Bolted to both ends of said arch and to the heads 2 3 are outer arched plates 8, which form a support for the outer brickwork, and thus nearly all the surface of the metal arch 1 may be used for heating purposes. The back and front heads are bricked up, as indicated at 9, except for the necessary openings for the door, damper, 850. Next above the base-casting 6 is the ash-box 10, having flanges 11, on which rests the brickwork forming the sides 12 of the fire pot. Resting upon these sides is the arched top of the fire-box, consisting of special-shaped tiles or bricks 13 14, which latter have recesses 15 in each side, as indicated in Fig. 5, to make passages for the products of combustion from the fire-pot below. In the brickwork in each of the sides of the fire-pot there are air-passages 16, which begin at the damper 17 and terminate at the lower edges of the bricks 13, as clearly shown by the arrows in Figs. 1 and 2. At each side sootscrapers 18 are shown, which are connected to rods 19, by which motion back and forth may be given to the scrapers 18 to scrape off the soot, which will fall down and maybe removed through the soot-doors 20.

A passage 21 is shown in Fig. 2, which may be used in drawing up the fire, but should be kept closed by the damper 22 at other times, when the products of combustion after passing through the perforations in the top of the arch over the fire-pot will pass down on the outside of the brick sides 12 to passages 23 on each side of the ash-box and out at the rear to the smoke-box 24:.

The brickwork at the front and rear is set beveling at the edges, as shown at 25, so as to allow of the utilization of as much as possible of the surface of the steel arch, and between it and the back and front castings is a packing of mineral wool, asbestos, or similar non-conducting material.

At the bottom of the fire-pot are the ordinary rocking grate-bars 26, resting on supports 27, fastened to the ash-box and operated by a rod 28 and lever 29; but as nothing is claimed on these further description is unnecessary.

Stay-bolts are shown at 30 to connect the metal arch 1 and the outer arch-plates 8 to the brick casing 31, which should be provided with the usual openings 32 for the hotair pipes. T

When I combine with the hot-air furnace a water-heating system, I prefer thearrange ment shown in Figs. 2 and 3. In this case 34 indicates an outflow-water box, and 35 the return-water box, both connected by suitable connections 36 and 37 with the radiators (not together.

shown) and also connected to each other by the system of pipes 38, 39, and 40, elbows 41, 42, and 43, and nipples 44, which latter have right and left hand threads by which the connections may be readily made.

The top 45 of the outer casing is formed of sheet metal and filled with sand or earth 46 to retain the heat, and under its center is set a damper 47, which can be swung, as indicated by dotted lines, to direct the heat in different directions.

I generally set fire-bricks 48 upon the upper set of pipes to divide up the flame and heat from the furnace. If the pipes are set very close together, there will not be so much need of this; but I prefer to use the bricks, as they help to burn the smoke and soot. The number of pipes is graduated by the amcu-nt of heat to be given off by the hot-water system. If all the pipes are not required, some of them may be dispensed with and the holes in the water-box plugged.- I

In order that the interior of the furnace may be readily got at for repairing or otherwise, should it be necessary, I divide the front head 2 in two parts, each having a horizontal flange 49, by which they may be bolted By removing the upper part accessmay be had to the interior of the furnace.

The base is provided with lugs or ribs 50 to keep the parts of the ash-box in place, and there are other ribs 51 formed onit to form guides for the bottom of the scraper,

The lower part of the bricks 1 3 is chambered out, as shown at 52, to diifuse the air entering through the passages 16.

Beneath the furnace there is a cold-air box 53, from which the air passes up the outside of the arch 1, becoming heated thereby, and passing out through the air-pipes to the different rooms in the usual manner.

Some of the advantages of the improvements above described are as follows: The heads, being seamed outside, prevent any gases escaping into the air-space, and leaks can be readily stopped should there be any leakage. Nearly all of the metal arch is utilized as heatingsurface. The cold air comes in contact with the coolest part of the heating-surface first and after-ward with the hottest part as it becomes heated. As the lower part of the metal arch is inclined inward, the descending products of combustion strike against it as they descend, while the incoming cold air does the same as it rises. The fire'brick fire-box keeps the fire 0d of the metal, thus equalizing the heat and making the furnace more durable. In case the fire-brick over the fire or any part of the internal work of the furnace needs replacing or repairing, it can readily be done by removing the upper part of the front head, and last, but not least, the furnace will be found to be a very economical and powerful heater whether with or without the hot-water part.

What I claim as new is- 1. In a hot air furnace,- thecombination of a grate, a brick fire-pot, a perforated top over the fire-pot, a metal arch inclosing said firepot and top and arranged to direct the products of combustion downward, a cold air heating chamber inclosing said arch, and fines arranged to draw the products of combustion downward between the fire-pot and arch and keep them separate from the air in the airchamber, substantially as described.

2. In a furnace, the combination of a grate, a fire-pot above the grate,a perforated top over the fire-pot, a metal arch having its sides in cline'd inward toward the bottom and arranged to direct the products of combustion downward, an outer cold air heating chamber arranged to direct the incoming air against the inclined sidesor the arch, and fines arranged to draw the products er combustion downward and keep them separate from the air in the outer air-chamber, substantially as described.

Ina furnace, the combination of a grate,-

. a fire-pot above the grate, a metal arch, front and rear heads having outwardly turned flanges to receive the metal arch, and a cold air chamber inclesing the metal arch,- sub stantially as described.

4. In a furnace, the combination of metal heads having outwardly turned flanges, an inner metal arch running from one head to theothen-and outer metal arch plates for supporting the brickwork, each connected to a head and the inner arch, substantially as described.

5. In a furnace, the combination cf a fire pot, a metal arcli over the f re pot, metal heads at each end of the fire-pot having outwardly turned flanges to receive the ends of themetal arch, and firebrick ends to the fire-pot having their outer faces covering the inner faces of the heads andtheir edges beveled on the top and sides, substantially as and for the purpose specified. V,

6. In a furnace,- the combination of the ashbox 10 having flanges 11, the brickwork sides supported by said flanges, the brick top having passages for the products of combustion,

the metal arch to direct them downward and a passage for the escape of the products of combustion near the bottom of the arch, substantially as described. 4

7. In a furnace,-the combination with a firepot and a metal archover the same,- of the outflow waterbon 34, the inflow water box 85, the rows of pipes 38 and- 39 inclined in oppo site directions and setbetween the fire-pot and the metal arch, elbows42', 43, and the right and left handthreaded nipples 44 connecting' the rows of pipes tcg'ether, the vertical row of pipes 40 connected to box 35, and the elbows 41 connecting the vertical with the horizontal pipes, substantially as described.

8. In a furnace; the combination with a metal arch and a fire-pot, of inflow and 0nt- In testimony whereof I affix my signature, flow boxes, pipes connecting said boxes arin presence of two Witnesses, this 26th day of ranged'in a horizontal row between the fire- January, 1895.

pot and metal arch, and bricks resting npon HENRY STANTON. and supported by said pipes to protect said Witnesses:

metal arch from the flames of the fire-pot, JOHN W. CRAWFORD,

substantially as described. SAMUEL E. WILLIAMS.

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