US258133A

US258133A - The draft of chimneys

Info

Publication number: US258133A
Authority: US
Publication date: 1882-05-16
Anticipated expiration: 1899-05-16

Description

(No Model.) A

J. O. SGHAEFER.

APPARATUS PORINGREASING THE DRAFT 0F GHIMNEYS. No. 258,133. Patented May 16, 1882.

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UNITED STATES PATENT QFFIGE,

JOHN o. SOHAEAFEIQOF NEW Yon-K, N. Y., ASSIGNOR or TWO-THIRDS TO KLAUSMANN & MAYER, or SAME PLACE.

APPARATUS FOR INCREASING THE DRAFT OF CHIMNEYS.

SPECIFICATION forming part of Letters Patent No. 258 ,133,-dated May 16, 1882.

Application filed February 21, 1852. (No model.)

To all whom it may concern:

Be it known that 1, JOHN G. SGIIAEFER, a

citizen of the United States, residing at New York, in the county and State of New York,

have invented new and useful Improvements in Apparatus for Increasing the Draft of Chimneys, of which the following is a specification.

. The object of this invention is to provide an improved means for increasing the draft in a steam-boiler furnace. This object I accomplish by the combination and arrangement of devices illustrated in the accompanying draw-.

' 2 the pipe to into the coil 1), is here dried or superheated and passes into the steanrnozzle D,

which by preference I construct as follows:'

a header-piece, 0, connecting a number of short pipes, d, which are provided with small 0 perforations 0, through which the thoroughlydry steam escapes up the chimney'F, causing an upward rush of air, thereby increasing the draft, a more intense heat in the furnace, and

a corresponding increase of pressure in the bOilGI'.

In the old method, where exhaust-steam is used for a similar purpose, the-steam rapidly condenses on mixing with the air in the chimney and-precipitates sufficientmoistureagainst 40 the Walls to cause the latter to crumble-and eventually destroy them. Even where live steam is used the effect is the same,though in a slightly-less degree.

In my apparatus the steam is rendered so 5 light and dry that it will pass through the chimney, carrying the air with itbefore it can can be sufficiently cooled to deposit moisture against the chimney-walls.

In order to provide simple and efficient means for automatically regulating or control ling'the passageof steam from the steam-dome to the superheating-coil, I provide the pipe a with aregulating mechanism,E,whieh is compos'ed-essent ially of two valves, f and i, arran ged in the pipe. (4, and of suitable construction, said valves being connected with the ends of a horizontal lever, g, pivoted at h on a standard, g. The valvefis so weighted, as atf, that when the pressure in the boiler rises above thedesired limit it'raises the end of the lever g, which turns on a fulcrum, h, closing the valve 2', so as to check the jets of steam escaping through the steam-nozzle D sulficiently to reduce the draft and make the fires under the boilerburn loweruntilthepressureagain comes within the desired limit.

I do not wish to be understood as broadly claiming a nozzle to inject superheated steam in the fine or chimney for increasing the draft in the boiler-fines or in the boiler-furnace.

hat I claim as new, and desire to secure by Letters Patent, isit The combination, with the boiler, steamdome, chimney, and su'perheating-eoil 1;, arranged above the boiler and connected at one end by a pipe, (I, with the steam-dome and at the other with a steam-nozzle in the chimney, of the automatic regulator E, connected with the pipe to between the steam-dome and superheating-coil, and composed'essentially of the pivoted lever g and valves tandf, oonnected with the ends of the lever, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand and seal in the presence of two sub scribing witnesses.

JOHN G. SGHAEFER. [12 s] Witnesses:

W. HAUFF,

WILLIAM MILLER.