US1465309A - Heat accelerator for hot-air furnaces - Google Patents

Description

Au 21, 1923. Msmw H. W. NEAL HEAT ACCELERATOR FOR HOT AIR FURNACES Filed Feb. 5, 1923 KB WWWEW Patented Aug. 21 1%23.

HARRY W. NEAL, OF INDIANAPQLIS, INDIANA. ASSIGTDl'OB 01E ONE-HAL TC TH ALL- NEAL FURNACE COIJL'PANY, 9F INDIANAPOLIS, INDEANA, A CGEPORATIOIT "3'1? 7 INDIANA.

E EAT ACCELERATOR FDR HOT-AIR FURNACES.

Application filed February 5, 1923. Serial 616,867.

This invention relates to improvements in furnaces for supplying hot-air for heating;

houses of the same'eh'aracter as patented to me in United States patent issued January 2,

1923, No. 1,40,l86,and the object of this invention is to increase the radiating surface of furnaces already built under prevailing methods without including the invention above patented to me, whether said furnaces have been assembled or not.

Another object is to embody the invention in a device as a new article of manufacture, that may be sold to the trade or direct to the consumer, and placed in the hot-aireonductors of any furnace on the market by any person without the aid of a skilled mechanic.

I accomplish the above, and other objects which will hereinafter appear, by the mechanism illustrated in the accompanying draw-V ing, in Which-- Fig. 1, is a view in front elevation and partial vertical section ofa common type of steel dome heating furnace with my invention operativelyinstalled. Fig. 2, is a perspective view of my invention apart from the furnace and pipe in which it is used. Fig. 3, is a view of the end remote from the furnace, of thedevice shown in Fig. 2, and Fig. 4, is a vertical section of the casing of a common type of furnace in which the radiating chambers are made of cast iron instead of out of sheet metal as in Fig. 1.

Like characters of reference indicate like parts in the several views of the drawing.

My invention is applicable to' any type of domestic heating furnace on the market, the two patterns shownin the drawings being selected merely to illustrate the manner of use.

In the drawing, 5 represents the dome or chamber for collecting the heat from the firepot below, and for heating air by contact and radiation that is to be conveyed to the rooms of the house for heating them. Surrounding this is a sheet-metal casing 6, of usual form, having an oblique portion 7,

The plates, at. one end of the unit, are :1.-

beveled or' curved or otherwise suitably shaped to conform closely with thecontour of the top of the dome, against which said ends make a bearing contact when in use, in order that the heat from the heated surface of the dome may be conducted to the metal plates and through them and discharged by radiation from the extended radiating surfaceswhich the numerous plates provide.

The widths of the plates 9 vary from a middle maximum to such a minimum for the outside plates as will permit the unit to be slidingly assembled through the thimble 18 of the furnace, and also to enter the adj accnt section of the conductor tube 8, in the manner substantially as shown.

One of the above-described units is placed in each hot-air conductor tube 8 of the furnace.

In the modification shown in Fig. i, the lower ends of the plates of the inserted unit rest upon the cast radiating chambers 15.

The number of plates in a unit, the number and location of the bolts uniting them, the shape of the furnace-contacting ends of the plates, etc., may be varied without departing from the spirit of the invention and I therefore do not desire to be held to the precise form shown 'or any more than is required by the appended claims.

I claim:

1. In combination with a hot-air furnace having a radiating chamber in communication with the fire-pot, means comprising a plurality of straight parallel sections retained in a unit of varying width widest toward the middleplate with air-spaces between the sections, the ends of said sections conforming approximately with the shape of the walls of the chamber and contacting therewith.

2. In combination with a hot-air furnace having a radiating chamber, means comprising a plurality of straight parallel metal plates retained in a unit of varying width widesttcward the middle plate with airspaces between the plates, an end of each of having a radiating chamber, means coniprising a plurahty of straight parallel metal plates retained in a unit of varying Width widest toward the middle plate with air-spaces between the plates, an end of each of said plates conformlng approx mately with the shape of the chambera'alls and contacting therewitln said unit being re movable from the i'urnace;

l. In combination with. a hot-air furnace having hot-air;conducting tubes, means comprising a plurality of straight parallel meta]. plates retained in a unit widest toward the middle plate With airspaces between the plates and located close to the furnace in sand tubes.

5. In combination Witha hot-air furnace having a radiating chamber and hot-air conducting tubes, means comprising a plurality of straight parallel metal plate, decreasing in Width from a middle one of maximum Width retained in a unit with air-spaces be tween the plates and located in the tubes in contact with the chamber.

6. In combination with a hot-airturnace having a radiating chamber and hot-air con.- ducting tubes, means comprising a plurality of substantially rectangular metal plates're tained in a unit yvith 'air spaces between the plates'and located in the tubes with; one of the short sides 'of each plate in contact with thechamber, said plates'varying in width and assembled with the narrower" ones on. each side of and correspondingly remote from a middle plate of maximum Width.

Signed atlndianapolis Indiana, this the first day 01"- February, 1922. -v V 7 a r HARRY'W. NEAL

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