US839568A - Furnace. - Google Patents

Description

No. 839,568. PATENTED DEC. 25, 1906. I. J. PINNIGAN.

PURNACE.

APPLIUATION FILED 15H25, 190e.

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JOHN JOSEPH FINNIGAN,

OF ATLANTA, GEORGIA.

FURNACE.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed May 25,1906. Serial No. 318.720.

To all r11/wm, t muy concern,.-

Be it known that I, J OHN JOSEPH FINNiGAN, a citizen of the United States, residing at Atlanta, in the county'y of Fulton and State of Georgia, have invented a new and useful Furnace, of which the following is a specification..

This invention has relation to furnaces; and it consists in the novel construction and arrangement of its parts, as hereinafter shown and described.

i The obj ect of the invention is to provide a furnace of special construction which is equipped with a magazine portion located above the fire-box in such manner that when the fire is beinOr raked the supply fuel from the magazine may be cut off.

The furnace consists of a vertical cylinder to which a horizontal cylinder is attached. A series of tubes extend through the horizontal cylinder and are connected atone end to a tube-sheet and at the other end to the rear wall of the fire-box. A magazine extends from the top of the vertical cylinder to the top of the fire-box, and said magazine is provided at its lower end with a detachable chute or potshaped receptacle, which is adapted to convey the fuel from the said cylindrical portion of the magazine into the fire-box. Said chute may be lifted out of the said cylindrical portion and is so constructed at its lower end as to engage and receive a cut-off plate, which may be operated through the door of the fire-box in such manner as to check the flow of the fuel through said chute.

In the accompanying drawings7 Figure 1 is a vertical sectional view of the furnace. Fig. 2 is a horizontal sectional view of the forward end of the furnace. Fig. 3 is a perspective view of the lower end of one form of chute. Fig. 4 is a perspective view of a form of cutoff plate adapted to be used with the form of chute shown in Fig. 3. Fig. 5 is a perspective view of the lower end of another form of chute. Fig. 6 is a perspective view of a form of cut-off plate adapted to be used with the form of chute shown in Fig. 5, and Fig. 7 is a perspective view of the lower end of still another form of chute.

The vertical cylinder 1 rests upon the base 2, which in turn supports the grate 3. The horizontal cylinder 4 is attached at one end to the vertical cylinder 1. Said horizontal cylinder is provided at its other end with a hinged door 5 and a smoke-outlet 6. The tube-sheet 7 is fixed near the outer end of the horizontal cylinder 4, and the fire-box 8 is arranged above the grate 3 in the lower portion of the cylinder 1. The lire-tubes 9 9 are xed at one end to the back of the `lire-box 8 and at the other end to the tubesheet 7. The lire-box 8 is preferably made of sheet metal and is generally in the shape of a bell with its lower edge riveted or otherwise secured to the inner walls of the cylinder 1. Said rebox is provided with the. usual door 10, through which an implement may be passed in orner to rake the coals that rest upon the grate 3.

The fuel-magazine consists of a cylinder.

11, which is attached at its upper end to the top of the cylinder 1 and at its lower end to the top of the fire-box S. A suitable swing cover 12 is provided for the upper end of said cylinder 11. The cylinder 11 is preferably made of sheet metal, and its vertical seam is secured together by the vertical line of rivets 13, while its lower edge is attached to the top of the lire-box S by the horizontal line of rivets 14. The heads of said rivets are located within the said cylinder 11 and form two distinct lines, one being vertically disposed and the other being horizontally disposed at the lower end of the said cylinder.

The chute 15 is in the form of a truncated cone-that is to say, it is conical in shape and when in position its smaller end is in the lower plane. It is provided at its upper end with an exterior annular ange 167 which is adapted to rest upon the heads of the line of rivets 14, located at the lower end of the cylinder 11. The said chute is provided at one side with a recess 17, through which the heads of the line of rivets 13 may pass when the said chute is lowered into position in the cylinder 1 1.

As illustrated in the accompanying drawings, several modified forms of construction may be used for closing the lower end of the chute 15. In the form of the invention as shown in Fig. 3 the lower end of the chute is provided with the exterior flange 1S. Said flange is substantially rectangular in a horizontal plane, and the plate 19 is adapted to pass under the lower end of the chute 15, said plate having at its edges the integral grooves 20, the upper edges of which are adapted to pass over the u per surfaces of the flange 18 and hold the p ate 19 against the mouth of the said chute. The plate 19 is provided with a handle 21, and the form of the plate is shown in Fig. 4. The rear edge of the plate ICO IOS

is provided with the projections 22 which are adapted to extend across the fire-box and come in contact with the back thereof, so that when the plate is shoved under the lower end of the chute for the purpose of closing the same it will be pro erly ositioned with relation to the outlet ofp the c ute. In the form of the invention as shown in Fig. 5 the lower end of the chute is provided with the grooved iianges 23. adapted to receive the edges of the flat plate 19, as shown in Fig. 6. It will thus be seen that the magazine-cylinder 11 and the chute may be filled -with fuel, and when it is desired to rake the coals without letting the fuel down the plate 19 is slip ed in position against the under end of the c ute 15. Thus the flow of the fuel from the chute into the JEre-box is cut 0H. When the Ere has been sufficiently cleaned, the said plate 19 may be withdrawn from the lower end of the chute l5, When the fuel will fall from the said chute upon the bed of lire within the said fire-box.

It will also be seen that the said chute may be easily and readily lifted out of the cylinder ll for purposes of renewal or repair or to permit of thorough cleaning of the tubes 9 9. This furnace may be used for heating water or for generating steam, and when put to such use is provided with suitable pipe connections. (Not shown in the drawings and which form no part of this invention.)

Having described my invention7 what I claim as new, and desire to secure by Letters Patent, is-

1. A furnace consisting of a casing, a irebox located within said casing, a magazinecylinder attached at its upper end to said casing and at its lower end to said fire-box, said cylinder having on its inner surface a vertical line of projections and at its lower Said flanges are end a horizontal line of projections, a chute adapted to slip within said cylinder and having an exterior flange adapted to rest upon the horizontal line of projections and a recess which receives the vertical line of projections and retains the chute against rotation.

2. A furnace consisting of a casing, a firebox located within said casing, a cylinder attached at its upper end to said casing and at its lower end to said nre-box, a line of rivets extending vertically and having projecting ends within said cylinder, a line of rivets extending horizontally and located at the lower end of said cylinder and having projecting ends, a chute having an exterior flange, sai

`chute adapted to slip within said cylinder,

said flange adapted to rest upon the horizontal line of rivets and having a recess which receives the vertical line of rivets ,and retains the chute against rotation.

3. A furnace consisting of a casing, a iirebox located in said casing, a cylinder attached at its upper end to said casing and at its lower end to said iire-box, a removable chute supported within said casing, said chute having at its lower end flanges, a plate adapted to slidably engage said flange in such manner as to close the lower end of the chute, said plate having projections which are adapted to come in contact with the back wall of the fire-box when the plate is in closed position under the chute and engaging the flanges when the plate is in opened position under the chute.

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

JOHN JOSEPH FINNIGAN.

Witnesses W. J. NALLEY, JOHN JOSEPH MCGARY.

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