US1332771A - Smoke-reducer - Google Patents

Description

w. F STARK. SMOKE REDUCER. APPLICATION FILED FEB. 13, I918- Patented Mar. 2,1920.

. m .n W 3 WILLIAM F. STARK, or cH-Ic'Aoo, InLINoIs.

sMoxE-ItnnucEn.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed February 13', 1918. Serial No. 216,999.

' To all whom it may concern:

Be it known that I, YVILLIAu F. STARK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful- Improvements in Smoke-Reducers', of which the following is a specification.

This inventionrelates to smoke reducers, the object in view being to provide a simple and effective device applicable to any furnace or stove, especially small steam plants and hot water heaters and furnaces, whereby better combustion is obtained and the carbon and gases from the smoke consumed, thereby eliminating the black smoke now found so objectionable particularly in large cities.

A further object of the invention is to provide a smoke reducer which may be cheaply manufactured, which may be sold at a reasonable figure, and which may be readily applied to a furnace fuel door opening, the device not interfering with the opening and closing of the fuel door, nor with the feeding of the fuel to the furnace.

A further object of the invention is to construct the device in such manner that access may be easily and quickly had to the mixing and heating chamber thereof.

With the above and other objects in view the invention consists in the novel construction, combination and arrangement of parts, as herein illustrated, described and claimed.

In the accompanying drawing,

Figure 1 is a sectional view of the furnace, showing the improved device in its applied relation thereto.

Fig. 2 is a horizontal section through the device detached on the line 22 of Fig. 1.

The device, as a whole, is in the form of a hood designated generally at A, the same comprising an inner wall 1 and an outer wall 2 arranged in spaced relation to each other to provide an intervening mixing and heating chamber 3 preferably of arcuate or quadrantal formation.

Ordinarily, in the preferred embodiment of this invention, the inner wall 1 will be formed of metal, such as cast or wrought iron, and will be provided adjacent to the bottom substantially semi-circular edge thereof, with an offset forming a supporting ledge 4, the outer wall 2 being formed with a correspondingly shaped rabbet 5 thereby .providing a curved and substantially semicircular lip 6 which rests upon the ledge 4:.

Adjacent to its upper and forward edge, the outer wall 2 is formed in the inner face thereof with a groove 7 to receive a rib 8 extending over and around the receiving portion of the hood. In this way, the outer wall 2 which is preferably formed of fire clay, is supported and sustained at two points or along two lines upon and in relation to the inner wall 1. An arcuate air inlet orifice 9 leads to the heating and mixing chamber 8, and the outer wall 2 is 3rovided adjacent to the bottom edge thereof with a number of outlet openings 10 through which the heated air and gasare discharged and, afterward, ignited, combining with the gases arising from the fuel, just beyond the hood, the result being that the gases which would ordinarily escape to the smoke pipe or flue are ignited and burned. 11 designates a curved offset which forms a connecting wall between the inner wall 1 of the mixing and heating chamber and an apron-like extension 12 which may be fastened to the fuel door frame in any suitable manner as by means of attaching plates 13.

As indicated in Fig. 1, the apron-like extension 12 of the device is secured to and within the frame 14 of the fuel door opening of the furnace. The hood extends well into the fire box above the grate, preferably a distance equal to or greater than twothirds the depth of the fire box from front to rear. The fuel is fed to the furnace in the usual way through the furnace door opening and is gradually coked under the hood and is then fed forwardly to a point beyond the hood, the gases rising under the hood, passing through the mixing chamber 3 and being ignited after passing through the openings 2.

I claim:

1. The combination with a fire box having a door opening in one wall, of a hood arranged within the fire box and including spaced walls defining a mixing and heating chamber, means for securing said hood to the walls of the door opening, said hood being concaved, directed downwardly and terminating below the walls of the opening, and said chamber having an inlet leading from inside the hood adjacent one end, and an outlet opening adjacent the opposite end.

2. The combination with a firebox having an opening in one wall thereof, of an apron secured to the wall of said opening and projecting into the fire box, a hood supported by said apron and including spaced Walls defining a mixing and heating chamber said hood being concaved and directed downwardly, and said chamber having an inlet opening leading from the inside of the hood, and an outlet opening adjacent its lowermost end.

3. The combination with a firebox having a door opening, of an apron secured to the walls of said opening and projecting into the firebox, a hood supported by said apron and including spaced Walls defining a mixing and heating chamber, said hood being concaved and directed downwardly to terminate below the edges of said apron and opening in the firebox, and said chamber having an inlet opening leading from'inside the hood at its point of connection with the apron, and an outlet opening adjacent the opposite end thereof.

4. The combination with a firebox having a door opening, of a hood arranged within the-firebox, said hood being concaved and directed downwardly and including spaced walls defining a mixing and heating chamber, means for supporting the hood upon the walls of the door opening, one Wall of the hood being formed to provide supporting ledges, shoulders formed on the remaining wall and engaged against said ledges, and said mixing and heating chamber having an inlet'opening leading from inside the hood, and an outlet opening adjacent the lower end thereof.

5. The combination with a firebox having a door opening, of a hood arranged within the firebox and including spaced Walls defining a mixing and heating chamber, an apron for supporting the hood from the walls of the opening, said hood being concaved and directed downwardly, one of said walls being constructedof metal and formed to provide a supporting ledge, the remaining wall being composed of fire clay and including a lip resting on said ledge, and said mixing and heating chamber having an air inlet opening leading from inside the hood, and an outlet opening adjacent its lowermost end.

In testimony whereof I afiix my signature.

.WILLIAM F. STARK.

Images