US367983A - Maetijf jubwan - Google Patents

Description

' UNITED STATES PATENT OFFICE.

MARTIN KIEWAN, or SYRACUSE, NEW YORK.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent N0. .367 ,983, dated August 9, 1887.

ApplioationfiledSeptember 15, 1886. Serial No. 213,622. (No model.)

To all whom it may concern:

Be it known that I, MARTIN KIRWAN, a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented a new and useful Improvement in steam Boilers, of which the following is a specification.

My invention relates to improvements in steam-boilers; and itconsists of the peculiar combination and novel construction and arrangement of the various parts for service, substantially as hereinafter fully described, and particularly pointed out in the claim.

The primary objeet of my invention is to provide an. improved steam-boiler of simple and durable construction with means whereby a more extended surface for the heat and products of combustion is provided, and through which the water is caused to circulate in comparatively thin sheets, so that a greater amount of steam is generated with the same quantity of fuel than has heretofore been possible with boilers of ordinary construction, thereby effecting a very material saving in the'cost of running the boiler. I f

In the accompanying drawings, which illustrate a steam-boilerembodying my invention, Figurel is an end view of my improved boiler removed from the masonry which surrounds the firebox. Fig. 2 is a vertical longitudinal sectional view thereof on the line 90 m of Fig. 1; and Fig. 3 is a vertical transverse sectional view on the'line l g of Fig. 2.

Referring -to the drawings, in which like letters of reference denote corresponding parts in all the figures, A designates the cylindrical inelosing-shell of my improved boiler, which has the heads a at its ends permanently secured in place by rivets or in any other preferred manner. These heads of the cylindrical outer shell are provided with a series of openings, at, and the heads are connected by a series of flues, B, which connect with aligned openings a in opposite heads a of the cylindrical shell. These flues B are ofany approved pattern and secured in place in the heads a in any desired or preferred manner, so that the heat and products of combustion will pass through the fines without entering the interior main chamber of the cylindrical inclosing-shell. The tubes or flues Bserve as stays to the heads a of the outer shell, A, and thereby brace and strengthen theapparatus.

The heads a of the outer cylindrical shell of the boiler are provided at their middle with enlarged openings a around which are arranged the openings a and the lines B, and these openings are made square or of any other preferred form or shape, it only being necessary that the sides of the opening shall .be arranged at an angle to each other, for a purpose to be describedhereinafter.

O designates an inner shell, which is inclosed or housed within the outer cylindrical shell. This inner shell is made square or of any other desired form in cross-section to correspond with the shape of the openings a in the heads a of the outer cylindrical shell, and at its ends against the heads a of the shell A around the openings a in said heads, and are secured thereto by rivets 0, thus detachably securing the inner shell to the heads of the outer shell and thereby permitting the inner shell to be detached for the purpose of permitting ready access to the water tubes and chamber to repair and clean the same, as will be very readily understood. The inner square shell, 0, istaperedlongitudinally, as shown in Fig. 2 of the drawings, so that one end is wider than the opposite end for the purpose of facilitating the adjustment of the inner shell within the outer cylindrical shell or the removal of the inner from the outer shell.

The inner removable shell has a series of transverse water-tubes, E F, secured therein, and which open through the sides of the inner shell and into the main chamber of the cylindrical outer shell in which the water is retained.

The series of water-tubes E are arranged at right angles to the series of tubes F, and said series of tubes E alternate with the series F, and these tubes'run in their proper directions throughout the entire length of the angular inner shell.

The ends of the angular inner shell are left open, so that the heat and other products of combustion will pass freely through the inner shell, and thus act upon and heat the inner shell and water-tubes E F therein, and by this peculiar arrangement of the inner shell and tubes therein an increased area of heating-surface is provided for the heat to act upon the water.

The inner chamber of the outershell contains the water to be heated, which flows through and fills the water-tubes E F ofthe inner shell, and the water is divided up into thin sheets or bodies by the tubes or lines B, the inner shell, (3, and the transverse tubes E F, so that the water is more rapidly converted into steam with the same quantity of fuel than has been heretofore possible with the ordinary form of boilers and at a much less cost.

It will be seen that I provide a very large heating surface, against which the heat and products of combustion impinge before finally passing out of the boiler-nan1ely, the inner shell, (3, the tubes or flues B within the outer shell and around the inner shell, and the transverse tubes within the inner shell communieating with the chamber of the outer cylind rical shell.

The operation of my invention will be readily understood from the foregoing description, taken in connection with the drawings.

My improved boiler is very simple and durable in construction and cheap and inexpensive of manufacture.

Ready access to the interior parts of the boiler can be had within a very short time to clean and repair the same, which is very important in an apparatus 01 this class. The outer cylindrical shell has a steam drum, G,

011 its upper side, as is usual, and which is of any approved pattern.

I have not deemed it necessary in this specification to show and describe the relative arrangement and disposition of the fire-box with. relation to the boiler, as such matter will be readily understood and supplied by a person skilled in the art to which my invention relates.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a steanrboiler, the combination of the outer shell having the heads provided with aligned central openings, one of which is larger than the other, the inner shell, 0, arranged in the outer shell and extending longitudinally through the same, the said inner shell being tapered throughout its length and having its ends turned out at right angles to form llanges c, which flanges are riveted to the outer sides of the boiler-heads, the series of water-tubes E and F,extending transversely through the inner shell and arranged at right angles to each other,and the series of lines D, extending through the boiler and surrounding the inner shell, substantially as described.

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

MARTIN K i it WAN.

XVi t n esses Josern BONDY, Tnoniis BUN'rLon.

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