US427074A - g-roseon - Google Patents

Description

(No Model.) 2 Shee'tsSheet 1.

J. A GROSHON. STEAM-BOILER.

No. 427,074. Patented May 6, 1890.

W/T/VESSES: IAHIE'IVTOR Arrom'vfsy (No Model.) 2 Sheets-Sheet 2. J. A. GROSHON.

STEAM BOILER.

No. 27,074. Patented May 6, 1890.

W/T/VESSES. INVENTOR v A BY W UNITED STATES ATENT" OFFICE.

JOHN A. GROSHON, OF NEIV YORK, N. Y., ASSIGNOR OF ONE-HALF TO RICHARD M. MACDONOUGII, OF SAME PLACE.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 427,074, dated May 6, 1890.

1 Application filed geptember 11, 1889. Serial No. 323,634. (No model.)

To all whom it may concern:

Be it known that 1, JOHN A. GROSHON, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification.

The invention relates to improvements in boilers for generating steam,whether the latter is to be applied for power or heating purposes; and it consists in novel features of construction and arrangement hereinafter described an d claimed, by which the water may be rapidly and efiectually heated and steam generated without excessive pressure at any individual part of the apparatus.

The invention will be fully understood from the detailed description 11 ereinafter presented, reference being had to the accompanying drawings, in which- Figure 1 is a central vertical section of a boiler constructed in accordance with the invention, the section being taken on the dotted line X X of Fig. 2, which is a top view of the boiler, partly in section, on the dotted line Y Y of Fig. 1. of the boiler on the dotted line Z Z of Fig. 1. Fig. 4. is an enlarged detached top view, and Fig. 5 a vertical sectional View, of one of a number of pipes through which the steam and heat respectively pass, and hereinafter specifically referred to.

In the drawings, A designates the exterior shell or casing, and B an interior shell or casing surrounding the parts which constitute the boiler, a space 0 being left between said casings for the purpose of forming an airchamber to prevent any undue heating of obj ects which may be in proximity to the boiler.

The casing A is provided with apertures D, (shown by dotted lines in Fig. 1,) through which the air from the space C may circulate.

The casings A B are surmounted by a suitable cover E, and are supported upon the flange F, encircling the cast water-compartment G, which is in the outline of a circle, and is provided at its inner, periphery with the annular flange H, upon which the gratebars I are placed. Below the grate-bars I there is provided the circular ash-pit J g and be- Fig. 3 is a transverse section yond and inclosing said ash-pit is arranged the circular casing K, between which and the ashpit is formed a space into which smoke and unconsumed gases from the fire may pass and escape thence through the opening L into the smoke-pipe M. Upon the inner upper edges of the casing K is formed the flange N, which serves to support the water-compartment G,

at its outer edges, while at its inner edges said compartment is supported upon the upper edges of the ash-pit J, as illustrated in Fig. 1. The ash-pit J is in communication with the outlet-door O, and the heating-chamber of the furnace above the grate-bars I may be supplied with fuel through the door P.

Above the water-compartment G is provided a compartment of similar outline, (lettered (3,) which is in communication with the compartment G by means of tubes B, through which the water may pass from the lower to the upper compartment. W'ithin the tubes R are secured flues S, which extend entirely through the water-compartmen ts G Q, and are open at their lower and upper ends for the purpose of permitting the passage through them of the heat from the fire. Immediately above the door P is the short water-compartment T, which receives a few of the pipes passing downward from the compartment Q, it being impossible to extend said few pipes continuously from the water-compartment Q to the compartment G without interfering with the introduction of fuel upon the grate-bars I. The water-compartment T is connected at its ends with the water-compartment G by means of the larger tubes V, in order that the Water from the compartment G may pass into the compartment T and thence upward through the tubes R to the compartment Q. The tubes R are arranged in the outline of a circle encompassing the grate-bars I, and form the walls of the heating-chamber, within which the fuel is placed.

In the drawings I illustrate two rows of the tubes R, connecting the water-compartments G Q; but it is obvious that as many rows or series of these tubes maybe employed as may be desired, according to the capacity it is necessary that the boiler should have. At the inner edges of the circular water-oompartment Q is secured, by means of bolts a, the circular steam-dome b, which is in communication with the compartment Q and is provided with the delivery pipe d, through which the steam is permitted to pass to any desired point, either for use as power or for heating purposes. The water is fed to the compartment G through the pipe e, and this pipe is connected with the customary gage f,

which is in communication through the pipe g with the water-compartment Q. Centrally within the upper part of the compartment is secured the reservoir 72. for fuel, said reservoir being provided with a suitable cover and being open at its lower end and operating, when in use, in the same manner as fuel reservoirs in base-burning stoves. The reservoir h need not be employed in the boiler unless desired; but its retention may be found convenient in instances where the boiler is employed for heating purposesas for supplying steam to the registers of dwellingssince in such cases enough fuel may be fed in the morning to last during the day, whereas without the reservoir 71. it might be necessary to frequently add fuel through the door P.

In instances where the boiler is used for generating power an attendant would probing the fines immediately below said plugs,

as also more clearly illustrated in Fig. 5.

In the employment of the invention the fuel is placed upon the grate-bars I and the fire started in the customary Way, while the water is introduced through the pipe 3 into the-compartment G, whence it passes upward through the series of tubes B into the compartment Q. The heat, it will be observed,

comes into contact with the outer surfaces of the tubes R, and also passes downward through the flues S, and thus acts upon the Water a second time. The volume of water in the tubes R is thus acted upon both at its outer side and at its inner side and over the most extended area that it seems possible to expose to the action of the heat. The heat and smoke, after ascending to the upperpart of the apparatus, pass downward through the fines S into the space between the ash-pit J and the surrounding casing K, and thence escapes through the smoke-pipe M. The steam generated passes into the dome b, and is then delivered through the pipe (I.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a steam-boiler, the water-compartments G Q, located, respectively, at the lower and upper ends of the boiler, the series of vertical tubes R, connecting said compartments, and being separated from each other, so as to permit the circulation of heat entirely around them on its upward passage, and the flues S, open at their ends and passing through said tubes, the latter inclosi'ng the heating-cham ber of the furnace, combined with the casing B, inclosing the tubes between said water-compartments, the inclosed ashpit and the outer casing K, forming a space beneath the compartment G, said space lead ing to the smoke-pipe, substantially as set forth.

2. In a steam-boiler, the water-compartments G, Q, and T, connecting-tubes R and V, steam-dome b, and fiues S within the tubes R and open at their ends, combined with the inclosing-casing and the grate-bars Within the line of the tubes R, substantially as set forth. Signed at New York,in the county of New York and State of New York, this 9th day of September, A. D. 1889.

JOHN A. GROSHON. \Vitnesses:

R. M. MAcDoNoUcH, (Inns. 0. GILL.

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