US409784A - Steam boilek ffenaoe - Google Patents

Description

(No Model.)

J. GOOD. STEAM BDILBR FURNACE.

Patented Aug. 27, 1889.

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UNITED STATES ATENT JOHN GOOD, OF NAPANEE, ONTARIO, CANADA, ASSIGNOR OF ONE-HALF TO JAMES E. HERRING, OF SAME PLACE.

STEAM-BOILER FURNACE.

SPECIFICATION forming part of Letters Patent No. 409,784, dated August 27, 1889.

Application filed May 4, 1889. Serial No. 309,659. (No model.)

To all whom, it may concern:

Be it known that I, JOHN GOOD, of Napanee, in the Province of Ontario,Dominion of Canada, have invented certain new and useful Improvements in Steam-Boiler Furnaces; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part hereof.

My invention, which will be hereinafter fully set forth and claimed, relates to furnaces for steam-boilers of that class in which steam and heated air are used as auxiliaries.

The object of the invention is a furnace by which great economyof fuel is obtained both by using a very low and inexpensive quality of coal and in the consumption of a small quantity of the same.

Figure 1 is a longitudinal section of my improved apparatus on line a 00, Figs. 2 and 3, showing the boiler in elevation. Fig. 2 is a horizontal section of the same 011 line y y, Figs. 1 and Figs. 3 is a transverse section of the same on line .2 .2, Figs. 1 and 2.

Sections of this iron and metal work are shown in plain thick solid lines.

B is a steam-boiler placed in a brick setting A, which may be the ordinary setting, except as far as my improvements necessitate modification of the same.

O is a fire-grate of any desired construction and form of gratebars, and O is a smaller secondary or supplementary grate placed beyond and the front end supported upon the bridge A, separate closed aslrpits A and A being formed under each. In the ash-pit A" an opening provided with a damper for the admission and regulation of an air-supply is desirable.

-D is acapacious air-pipe set to one side and under the boiler and so that the products of combustion may freely play around it, an open setting A or any other convenient form being used. The pipe D is open at the rear to provide a free entrance to the air, but may have bends or elbows-such as D attached to give any desired turn to the air-inlet. At the front the pipe D is connected by an elbow D to the stem of an inverted-T pipe D" placed opposite the ash-pit O, and to the trunk of said T-pipe is connected a short pipe D" containing a tapering nozzle d and penetrating the ash-pit front a, which is made approximately air-tight and projects in said ash-pit A and under the grate O.

E is a steam-superb eater placed transversely under the boiler and consisting of a strong cast-ironbox divided by two partitions E E, of which one stops short of the delivery end and the other of the supply end into a continuous return-passage, starting at the supply end e and terminating at the delivery end 6, each of which is closed with a steam-tight cover 6 and 6', provided with a nozzle for connection with a steam-pipe. The supply end 6 is connected to a steam-pipe F, taking steam from the boiler, and the delivery end 6 with a steam-pipe F, leading to the front of the boiler and passing through the trunk of the T-pipe D" into the short pipe D and nozzle cZ, in which it terminates in a nozzle f, forming a jet-exhauster.

Plain arrows indicate the direction of the air and feathered arrows the direction of the steam or steam converted into gas.

The apparatus operates as follows: Steam is passed from the boiler by the pipe F into the superheater E, where it is superheated and converted into a permanent gas, commonly termed F water-gas. Thence it passes by the pipe F, through the-T pipe D, into the nozzle d, where it forms an exhauster to the air-pipe, capable of forming a powerful vacuum. Air is drawn by the exhauster into and through the pipe D, D, D, and D',becoming heated therein and discharged, mixed with the water-gas under the grate O, through which and the incandescent fuel upon it it passes and is ignited by the latter. To prevent the escape of a portion of the same and from the solid fuel upon the grate unconsumed, the secondary grate O is used, which is kept covered with incandescent fuel and directly over which the superheater E is placed, said secondary grate having practically the effect of a smoke-consumer. As the water-gas itself forms a considerable portion of the fuel, comparatively little coal is consumed, and this may be of the lowest quality, screenings being preferred.

I claim as my invention In a steam-boiler furnace, the combination of the air-pipe D, passing longitudinally through the fine and having its front end returned and entering the air-tight ash-pit, and provided With a, nozzle 61', the superheater 5 E, placed transversely under the boiler, steam-pipe F, connecting the superheater with the boiler, pipe F, connecting the discharge end of the superheater and passing through the front end of the air-pipe and ter- IO minating in the nozzle rl, forming a jet-exhauster, the grate O and secondary grate 0,

and the air-tight ash-pits A and A substantially as set forth.

In testimony whereof I have signed, in the presence of the undersigned Witn esses, at Nap- 15 mice, Ontario, the 30th day of March, 1889.-

his JOHN GOOD.

mark

Witnesses:

A. L. MORDEN, JAMES E. HERRING.

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