US893196A

US893196A - Furnace.

Info

Publication number: US893196A
Application number: US41081508A
Authority: US
Inventors: George O Richards; Martin S Miller
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-01-14
Filing date: 1908-01-14
Publication date: 1908-07-14
Anticipated expiration: 1925-07-14

Description

No. 893,196. PATEN'IED JULY 14, 1908. G. 0. RICHARDS & M. S. MILLER.

PURNAGE.

APPLIOATION FILED JAN. 14, 190s.

GEORGE RICHARDS AND MARTIN S. MILLER, OF CLEVELAND, OHIO.

. FURN ACE g Specification of Letters Patent.

Patented July 14, 1908.

Application :filed January 14, 1908. Serial No. 410,815.

To all whom t ma/y concern:

Be it known that we, GEORGE O. RICH- ARDs and MARTIN S. MILLER, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

This invention relates to -hot air furnaces, and has for its object to provide -improved means for heating the air which is supplied by the furnace, said means embodying a cylinder or air chamber located in the jacket above the fire pot and connected to the surrounding space in the jacket by means of'a large number of short horizontal llues or pipes around which the products of combustion circulate before they pass to the smoke Improved means are also provided for controlling the amount of air caused through said chamber.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation, part of the outer jacket being broken away. Fig. 2 is a vertical section. Fig. 3 is a horizontal section on the line 3-3s of Fig. 1.

Referring specifically to the drawings, 1 indicates'the outer jacket conveniently formed of sheet metal or the like and standing upon a base 15. an air inlet 9. This jacket has a top 23, and service pipes 13 by which the hot air is delivered as desired.

The fire pot is door 6, an ash pit, operating rod 27.

Above the fire pot is a cylinder or drum 3 and within this, and spaced therefrom, is another cylinder or drum 14. These cylinders are connected by a considerable number of short horizontal pipes 4 which extend across the space between the drums, and allow the passage of air from the space 19, within the jacket, to the drum 14. Said drum 14 is closed at the bottom and is located directly above the center of the fire pot, in position to receive the greatest heat thereof. The space between the

drums

3 and 14 is closed at the top, as indicated by 20, eXceptfor the flue pipe 17 leading to a chimney. The space between the drum 3 and the jacket 1 is also indicated at 5, with a fuel as at 8, and a grate 16 with to pass' It is provided at the bottom with closed or provided at the to with an annular plate 12 whichis providedp with a series of openings 21 and mounted upon top of this p ate is another movable annular plate 11 which is provided with similar openings and which may be turned by means of a handle 10 projecting throughl a slot 2 in the side of the jacket. By turnin the valve plate 11 the o enings are control ed. When they are close all the heated air necessarily passes from the space 19 through the pipes 4 and the central chamber 14.. This heats the air to the highest degree possible. When more moderate temperature is desired thev plate may be turned to open the valve more or less, and part of the air at least will flow directly through the openings 21 to the top of the jacket and thence to the service pipes.

he arrangement shown causes the heated air, when conducted throu h the central heating chamber, to absorb eat to a hi h degree, from the adjacent tubes and the wa s ofthe chamber, which, as stated, are eX- posed to the products of combustion flowing thereover. The drums and the connecting pipes are preferably constructed of sheet metal and can be set in place upon the fire p Although illustrated in connection with a coal burner, the a paratus can without invention be modified) to receive its heat from a gas burner placed within the fire pot. e claim:

In a furnace, the combination of a fire pot and an outer jacket, inner and outer spaced drums located above the lire pot and within the jacket and below the top thereof, forming a hot air chamber in the upper part of the jacket, with an air space between the outer drum and the sides of the jacket, the inner drum openin at the top into the said chamber, and a pIurality of horizontal pipes eX- tending across the s ace between the drums and connecting the cliamber within the inner drumwith the said air space between the outer drum and the jacket.

In testimony whereof we affix our signatures, in presence of two witnesses.

GEORGE O. RICHARDS. MARTIN S. MILLER. Witnesses:

JOHN A. BOMMHARDT, MONROE E. MILLER.