US624786A - Boiler-furnace - Google Patents

Description

No. 624,786. Y Patented May 9, I899. E. G. GEBMER. BOILER FURNACE.

(Appl t fildJu 17 1898) (No Model.)

I 1 L r w u I e m A F (K I If. I L...z. W i .MW I fl B L i WITNESSES.-

NITED STATES ATENT OFFICE.

EDWARD G. GERMER, OF ERIE, PENNSYLVANIA.

BOILER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 624,786, dated May 9, 1899. Application filed June 17, 1898. Serial No. 683,696. (No model.)

. hereby declare the following to be a full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

This invention relates to improvements in boiler-furnaces; and it consists,substantially, in constructing a series of vertical flues in the sides of the furnace and front of the bridgewall extending from below the grate-bars upward a short distance above the top of the bed of fuel on the grate-bars and having the fronts thereof provided with narrow slots through which the gases generated in the fuel pass into said fines and are there intermixed with air passing up therethrough from below the grates and pass out of the upper portions of the slots in said fines, so as to be burned at or just above the surface of the bed of fuel on the grate-bars, whereby I am enabled to secure a much larger consumption of these gases than is possible in boiler-furnaces taking their supply of air through the interstices between thegrate-bars alone. I

The construction and operation of this in vention are hereinafter fully setforth and described, and illustrated in the accompanying drawings, in which Figure l is a vertical section of a boilerfurnace embodying my invention. Fig. 2 is horizontal section of the same on the line w a; in Fig. 1, looking in the direction of the arrows. Fig. 3 is an enlarged perspective View of a section of the same, showing the construction thereof. Fig. 4c is a sectional view of a double-boiler furnace substantially on the plane of the line a: as in Fig. 1.

In the drawings thus illustrating myinvention, A is a boiler, and B a section of the setting thereof, 0 the bridge-wall, D the firebox, E the fire-box doors, F the grate-bars, G the ash-pit, and H the ash-pit doors, all of which are of usual construction, except in that I build in the lining of the sides d of the fire-box D and in the front c-of the bridgewall 0 a series of vertical fines I, which extend upward from a point a little below the bottoms of the grate-bars F to a point a little above the top of the bed of fuel J on the gratebars F. In the fronts of these flues are narrow vertical slots I, which extendthe entire length of the fiues I, and at the lower ends of the fines I there are inclined openings I into the ash-pit G, through which any ashes passing into the flues I through the slots I therein pass down into the ash-pit G. The tops of the fines I and the slots I are closed, so

thatthe slots 1 are the only communication with the flues I, except the inclined openings I at the lower ends thereof, as is clearlyillustrated in the enlarged Fig. 3. These fines and the slots in the fronts thereof I prefer- 7o ably make of fire-brick molded in the proper shape therefor, so as to be laid up, as illustrated in Fig. 3. I can, however, make the flues of metal and set them in the walls of the fire-box, using ordinary fire-brick and build ing the metal fines into the walls of the firebox. I prefer, however, to make them of brick molded to the proper shape and laid up as illustrated in Fig. 3.

In operation air passes up from the ash-pit through the fines I, and the gases from the coal being burned also passes into the fines I through the slots 1, and as the gases and air intermixed pass out of the upper parts of the slots I over the top of the coal they are burned, which flame also assists to consume the remaining gases arising from the top of the coal through the surplus air passing up through the dues I and out over the surface of the coal.

In Fig. 4 I show a fire-box with a central longitudinal wall, which only extends up far enough to contain the flues I and which is adapted for use in wide fire-boxes where there is not enough air supplied through the flues 5 in the sides of the fire-box and front of the bridge-wall.

Having thus shown and described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, 10o 1s q 1. The combination in a boiler-furnace,of side walls having a series of vertical flues therein extending from below the grate-bars thereof to a point soinewhat above the top of the coal on the grate-bars, said flues having narrow vertical slots in the fronts thereof extending into said flues through their entire length, substantially as and for the purpose set forth.

2. The combination in a boiler-furnace, of side walls having a series of vertical flues therein extending from below the grate-bars thereof to a point somewhat above the top of the coal on the grate-bars, said flues having I narrow vertical slots in the fronts thereof ex-. tending into said flues throughout their entire length, with a bridge-wall having like slotted flues in the front thereof, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of twowitnesses' EDWARD G. GERMER. Witnesses:

FRED EINFELDT, H. J. CURTZE.

Images