US422921A

US422921A - Hot-air furnace

Info

Publication number: US422921A
Authority: US
Current assignee: Fleet Capital Corp
Publication date: 1890-03-11
Anticipated expiration: 1907-03-11

Description

(No Model.) 2 Sheets-Sheet 2. H GOWLES HOT AIR FURNAGE.

Patented Mar. 1l, 1890.

ill

. UNITED STATES PATENT OFFICE.

HENRY COl/VLES, OF UTICA, NEW YORK.

HOT-AIR FU RNACE.

SPECIFICATION forming part of Letters Patent No. 422,921, dated March 11, 1890.

Application tiled July 22, 1889. Serial 110,318,273. (No model.)

This invention rela-'tes to hot-air furnaces;`

and it has for its object to construct a furnace which shall be simple and efficient, and in which the heat shall be retained for a sufficient length of time to cause it to be imparted by radiation to the surrounding air, thus making the furnace economical in op-` eration.

The invention consists in the improved construction, arrangement, and combination of parts, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 is a perspective view of. a furnace embodying my improvements, with parts of the exterior or surrounding casing broken away to show the construction. Fig. 2 is a vertical sectional view of the same.

Fig. 2. i

Like numerals of reference indicate like parts in all the figures.

which may be had through auf opening 3 in the front side of saidibase,.in which may be arranged a door having suitable draftopenings. Such a door, however, may be dispensedI with.

The base 1 supports the grate 7, which may be of any desired construction; and the said base likewise supports'the fire-pot, which may be composed of two or more annular sections 8 S, the meeting edges of which have Joints of any suitable construction.

Fig. 3 is a horizon` tal sectional view taken on the line n a' in` 12 has au opening 14, surrounded by an an I nular flange l5.

The rear side of the dome or combustionchamber has an opening 16, at which is bolted an upwardly-extending elliptical or oval flue 17, the upper end of which has an annular fiange 1S. Suitably mounted in the lower part of the iiue 17 is a damper 19, which may be operated by means of achain 20, extending over suitably-arranged pulleys 21 to the front side of the furnace,'where it may be conveniently reached and manipulated. The iue 17 ,is provided with a rearwardly-extending branch 22, upon which is mounted ya pipe 23, to which the smoke-pipe isin turn connected. The pipe 23 is provided on its under side with a draftnegulator consist-ing of a valve-casing 24, the opening of which has a valve or damper 25, which may be operated by means of a rod 26, extending upwardly to any desired point.

27 designates a radiator, which consists of'an annular chamber ordrum constructed preferably of rolled steel-plate and provided at its lower edge with openings 2S 29, surrounded by flanges 30, and adapted to be connected, respectively, to the flange 15 of the casing 12 and to the iiange 1S of the flue 17, thus conp u g nectingthe said radiator with the interior of 1 designates the base of my improved furnace, which forms the ash-pit 2, access to the furnace. The front side of the radiatorcasing is provided with a door-opening 3l, ar ranged directly above the door-casing 12, and through which access may be had to the interior of the radiator forthe purpose of cleaning the same and removing accumulations of soot and similar obstructions.

- The furnace is inclosed in the usual manner by a casing 40. To said casing is bolted a frame el, having a door Ll, hinged by its lower edge and provided with handles 5 5, forming stops which, when the said door is thrown open, will support it in a partly-inclined position. The upper and side edges of said door are provided with iianges 6 to guide water into a box or receptacle which extends from the frame 41 into the air-space between the furnace and its casing when the said receptacle is being iilled. The object of this device is to meisten the air within the casing, which latter is to be connected in the IOO usual manner with ducts for the admission of the cold and the exit of the heated air.

The operation of my invention will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed. The furnace is charged through the door 13, and when the fire is started a direct draft may be had by opening the damper 19 in the iiue 17. After the fire has been well started the said damper 19 is closed and the products of combustion will then pass through the opening` 14 in the doorcasing 12 up into the radiator, traverse the latter on opposite sides thereof and then pass downwardly through the opening 29 into the flue 17 and thence out through the smokepipe. In the radiator 27, directly above the opening 29, is arranged a horizontal vplate or defiector 33, which serves to cause the products of combustion which rise from the flue 2O to take a'devious course before escaping through the radiator. The draft may be regulated by means of the valve or damper 25, through which cold air in any desired quantity may be admitted into the smokepipe. Said draft-regulator being located on the under side of the smoke-pipe, there will be no danger of smoke escaping into the room. When it is desired to clean the radiator, this may be done by means of an ordinary scraper which is inserted through the opening 31. The soot and dirt may thus be scraped directly through the opening 14 into the door-casing 12, from whence it will drop into the fire-pot and thence into the ash-pit.

It will be seen by the construction of my improved furnace the products of combustion will ascend into the upperportion of the-dome or firefpot and likewise into the upper portion of the radiator, where they will remain until the heat shall have been effectually given off to the surrounding air, when they will be replaced lby more intensely-heated particles.

the combustion-chamber, substantially as set forth.

2. In a furnace, the combination of the dome or combustion-chamber, a door casing or frame bolted to the front side of the same and having a hinged charging-door and provided with an opening in its upper side, an upwardly-extending flue bolted to the rear side of said combustion-chamber, an annular radiator surrounding the upper portion of the combustion-chamber and connected with the opening in the upper side of the door-casing and with the upwardly-extending iiue, a smoke-pipe extending from the latter and having a damper or.draftregulator, and a damper arranged in the upwardly-extending flue between the smokepipe and the combustion-chamber, substantially as set forth.

3. In a furnace, the combination of the combustion -chamber, the door-casing secured to the same and having an opening at its upper side, theflue secured to the rear side of the combustion-chamber,-the annular radiator secured or connected to said flue and to the opening of the door-casing, and an opening in said radiator arranged directly above the opening in the door-casing, substantially as and for the purpose set forth.

4. In a furnace, the combination of Vthe combustion-chamber, the door-casing secured to the front side of the same and having au opening in its upper side, the upwardly-ex- ICO tially as and for thepurpose herein setforth.

In testimony that I claim the foregoing as my own IV have hereto affixed my signature in presence of two witnesses.

`l`HENRY UOVVLES. Witnesses:

JOHN EDGAR, JOHN J. BURKE.