US776053A - Solid and fluid fuel furnace. - Google Patents

Description

PATENTED NOV. 29, 1904.,

0. A. GIFFORD.

SOLID AND FLUID FUEL FURNACE.

APPLICATION FILED JULY 9, 1903.

N0 MODEL.

A ()0 app-m a lilo. 1776.053.

Swar

Patented November 29, 1904s.

a'rnnr l ment CHARLES A. Gll lEORD, OF AKRON, OHIO.

some also more FUEL. Fuentes.

siencrnrcarrou forming part of Letters patent-no. wanes, dated November as, 190a.

Application filed July 9, 1903. Serial No. lii'lhQQQ. on model.)

fails recourse may be had to the ordinary common solid fuel.

The objects of my invention are to provide means whereby a furnace normally burning solid fuel may be so adapted as to burn a fluid fuel; and another object of my invention is to so place a burner for burning fluid fuel that it Will in no wise disturb or interfere with the lire-pot wherein is normally burned solid fuel.

lit frequently happens in those communities where there exists large quantities of natural fluid fuel that it is the common fuel used both for heating and lighting, and where this fluid is conveyed to any considerable distance from its natural supply it not infrequently happens that the supply fails for some. cause or other, necessitatinga return to the use of a solid fuel, and as a consequence it is very desirable to have a furnace provided with means whereby either fuel may be used, or both, if necessary, without either one interfering with the other.

To the accomplishment of the aforesaid objects my invention consists in the peculiar and novel constructiom arrangement, and combination of the various parts hereinafter described, reference being; had to the accompanying drawings, in which drawings similar referencenumerals indicate like parts in the different figures.

lin the drawings, Figure l is a side elevation of a furnace with a portion of the outer casing broken away to better illustrate the internal construction; Fig. 2, a section at the line not Fin. 1: Fin". 3.. a longitudinal section the of my improved burner, and; Fig. i a section of Fig. 3 at the'line .lu the drawings, 1 represents the outer one of an ordinary furnace of any construction, this casing 1 being made up of sections or cylinders of galvanized iron. which are held together by rings 2 at intervals, so that iffor any reason access is required to the inside of a furnace it can be had by removing one of From theup? the rings at the desiredpoint. per part of thisouter casmgextends tubes or register-pipes 3, which lead to the registers in the apartment to be heated by the furnace.

Between this outer casing 1 and the stove or solid fuel is burned,

fire-pot 4, in which the is an air-space which formsa passage from the cold-air inlet (not shown) in the base por tion of the casing, fromrwhich it rises around the heated lire-pot and through any auxiliary.

heating devices which are used to increase the superficial area of the solid-fuelheating devices up and out through-the register-tubes 3. Within this space between the fire-pot 4,- and outer casing 1 I place a fluid-fuel burner, which is best described and illustrated in Figs. 3 and 4 and consists of a hollow box 5', having inwardly-projecting alternating battle-plates 6, and in the ply pipe? for the inlet of the fluid fuel. The upperportion of this pipe 7 is punctured with any number of minuteopcnings for the escape of the fluid fuel. The bottom of this box or burner 5 is open and is wider than the outside of the inlet-pipe 7 topermit of the upward flow of air into the burner to permit of the complete combustion of the fluid fuel.

The fluidfuel is supplied from a supplypipe 8 and, controlled by a cock 9 and passes through a mixer 10 to permit of the mixing of atmospheric air with the fluid fuel.

From the upper end of the box or burner 5 extends an outlet-pipe 11 for the products of combustion produced by the burning of the,

fluid fuel to pass away. in order to save all the heat that can be saved from'the burner, ll customarily pass the exit-pipes 11 out through the registerrpipes 3 to the chimney 12, which is also the chimney by which the products of combustion of the solid fuel are permitted to escape, thus utilizing substantially all the heat radiated from the outlet-pipe 11.

In this description reference has only been made to. one burner; but two or more may be placed Within the air-chamber surrounding the fire-pot, and one or all of them may be used, as the 'requirements of the case sha dictate. In order to ignite the fluid fuel in these burners, I provide an opening closed by a door through the casing opposite to where the burner 5 is situated and also a smaller opening 14. in the side of the burner itselfthrough which a lighted flame may be passed to cause the ignition of the fluidfuel. The door 13 can be closed after the fluid fuel is ignited; but the opening 14; in the burner 5 need not be closed, for the reason that the draft incident tothe consumption of the fluid fuel Within the burner will draw air into the burner and thereby prevent the escape of fumes into the register-pipes from the fluidfuel burner. These burners 5 are preferably made in the arc of a circle to correspond to the general contour of the air-space surrounding the fire-pot 4. All the support that is generally necessary for the burner 5 is the inlet-pipe 7 and the outlet-pipe 11, as the burners are made of thin metal and are not heavy, their only purpose being to carry ofl the fumes du j to the ignition of the fluid fuel.

What claim, and desire to secure by Letters Patent; is

1. The combination in a device of the class designated, of a solid-fuel-combustion chamber of a furnace arranged to heat air, a casing inclosing said solid-fuel-combustion chamber and cooperatingtherewith to form an airheating-space, a fluid fuel burner arranged withinsaid' air-heating space between said 'solid-fuel-combustion chamber and casing and an independent off-take flue to carry away the products of combustion from said fluid-fuel burner.

2. 'In a device of the class designated, the combination with a solid fuel combustion chamber havingan off-take flue, a casing surrounding said combustion-chamber, a fluidfuel burner placed between said combustionchamber and said casing, and means independent of said off-take flue for the escape of the products of combustion from said burner.

3. The combination in a device of the class designated, of a solid-fuel-combnstion chamber, an inclosing casing surrounding said combustion chamber and separate therefrom, a fluid-fuel burner arranged between the two, an inlet .to said burner for fluid fuel, and a separate outlet for the escape of the products of combustion from said burner, said inlet and outlet forming a support for said burner.

4. In a device of the class designated, the combination with acombustion-chamber having an off-take flue, a casing surrounding'said combustion-chamber, a fluid-fuel burner arranged within the space between said chamber and easing, baflie-plates in said burner to cause the backward and forward movement of the products of combustion while in said burner, and'means independent of said offtake flue for the escape of the products of combustion from said burner. V g

In testimony that I claim the above I hereunto set my hand in the presence of two subscribing Witnesses.

CHARLES A. GIFFORD. In presence of G. E. HUMIHREY, MAUDE ZWISLER.

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