US276178A - Clementina j - Google Patents

Description

(No Model.) v

G. J. M. HAYNA.

AIR FEEDING GRATE BAR.

No. 276,178. Patented A r. 24, 1883.

I fnvnarl v ewm/aam NITED STATES GLEMENTINA J. M. HAYNA, OF ST. LOUIS, MISSOURI.

AIR-FEEDING GRATE-BAR.

SPECIFICATION forming part of Letters Patent No. 276,178, dated April 24, 1883.

Application filed December 14, 1882. (No model.) I

To all whom it may concern:

Be it known that I, GLEMENTINA J. M. HAYNA, of St. Louis, Missouri, have made a new and useful Improvement in Air-Feeding Grate-Bars for Preventing Waste in Fuel- Burning Furnaces, of which the following is a full, clear, and exact description, reference bein g had to the annexed drawings, making part of this specification, in which Figure 1 is a vertical longitudinal section taken on the line 1 1 of Fig. 2 of afurnace havin g the improvement in question; Fig. 2, a vertical transverse section taken on the line 2 2 of Fig. 1; and Figs. 3 and 4, details upon an enlarged scale, Fig. 3 being a horizontal section taken on the line 3 3 of Fig. 4, and Fig. 4 a vertical section taken on the line 4 4 of Fig. 3.

The same letters of reference denote'the same parts.

The present invention is adapted to'a great variety of furnaces, including stoves. By means of it the fuel and smoke are thoroughly consumed.

A represents a furnace in which the improvement is embodied. It is shown in connection with a steam-boiler, B.

0 represents one of the doors of the furnace.

The fuel rests upon a series of peculiarlyconstructed bars, D D D D D. These bars take the place of the ordinary grate-bars in a fuel-burning furnace, extending from the front of the furnace toward the rear end thereof. Each of these bars in cross-section is constructed substantially as showninFigs. 1, 2, 4-- that is, being arched, the arch preferably being quite deep. At the farther end, (I, of each of the bars D D D the bar is extended upward in the form of pipes d, Figs. 1,2, 3,4. The bars D Dat each side, respectively, of the furnace are similarly arched underneath, but in place of having a single pipe at the farther end of the bar they have a series of upright tubes, 61 d 6?, throughout the length of the bar. The bars D D D throughout their length have numberless perforations, (1 Figs. l,3,4that is, as many as is practicable for the escape of the air upward from the air-passages (Z beneath the bars. The tubular extensions d d have at their upper ends, respectively, outlets d Figs. 1,2, 4. The eifectof this construction is'to provide air-passages d d underneath each bar D D D D, respectively, wherein air can be I received and heated by means of the burning fuel upon the upper side of the bars. The air also enters the upright passages d W, and is heated therein. From the passages 01 d d the heated air escapes through the perforations d d upward all over the bottom of the furnace and along the sides and across the rear and a portion of the front end of the furnace, the air being delivered into the furnace-chamber in such quantity and heated to such a degree as to enable the fuel and the smoke to be much more thoroughly consumed than in the ordinary furnace. The bars D D D D D are laterall y placed closely together andsubstantially as shown in Fig. 2. The bosses (Z d, Figs. 3, 4,.serve to keep the bars a slight distance apart, the aim being to separate the bars to that extent only as may be necessitated for the downward passage into the ash-pit of such ashes as may be formed in thefurnace. It is not intended to agitate the grate-bars or the fire forthe purpose of discharging the ashes forcibly from above the bars, but rather to let the ashes of itself find its way downward into the ash-pit.

It is desirable to have the upright tubes (1 61 extended entirely around the furnace-chamher; but where fuel isiutroduced laterally into the furnace-chamber, as through the furnacedoor 0 in the present case, the upright tubes are necessarily omitted at the points where fuel is introduced.

- I do not desire, in the construction of the tubes (1 61 to be restricted in horizontal crosssection to any special form. The general'shape of the bars D D D D D, as a set, conforms to the contour of the furnace-chamber in which the bars are placed-that is,for use in a square furnace, such as here shown, the bars are extended forward and backward in the furnacechamber, and the upright tubes (1 d are in a rectangular form, corresponding to the shape of the furnace-chamber; but in a differentlyshaped furnace-chamber-for instance, one of a circular shape-the bars are extended horizontally suitably to meet the walls of the chamber, and the passages cl 01 then assume a circular form, for the essence of the invention is so constructing the bars D D, &c., as to form a series of air-passages horizontally beneath the fire, as seen at (P, Figs. 1, 2, 4, and a series of upright air-passages surrounding the fire, as seen at d d, Figs. 1, 2, 3, 4, and so that the heated air shall escape both upward into the burning fuel and also laterally over the fire. By reason of the apertures from the passages d d being at the sides of such passages as shown, the airescaping therefrom into the fire operates to drive the escaping heated current of'air and smoke backward into the hotter portion of the fire, serving thereby to consume the smoke.

I claim- 1. A furnace, A, having the bars D D D D D, said bars being arched to form the passages d perforated at (F, provided'with the bosses d, and having the perforated tubular extensions 01 d, as and for the purpose described.

2. A furnace, A, having the bars D D D D D, said bars being arched to form the passages d perforated at d for the air to pass 20 upward, and provided with the bosses cl, as and for the purpose described.

3. A furnace, A, having the bars D D D D D, said bars being arched to form the airpassages 61 and perforated at (1, and having 25 the perforated tubular extensions d d, as and for the purpose set forth.

4. A furnace, A, the fuel in which is supported upon the bars D D D D D, said bars being shaped to form the air-passages 01 and 0 being perforated at (1 as and for the purpose described. 7

Witness my hand.

OLEMENTINA J. M. HAYNA.

Witnesses:

O. D. MOODY, ALBERT G. FISH.

Images