US866034A

US866034A - Water-tube boiler.

Info

Publication number: US866034A
Application number: US33639706A
Authority: US
Inventors: John G Johnson; Charles B Dunn; Christian C Febiger; William Sellers; Benjamin D Coppage
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-09-27
Filing date: 1906-09-27
Publication date: 1907-09-17
Anticipated expiration: 1924-09-17

Description

No.' 866,034. PATENTED SEPT. 17, 1907. W. SELLERS & B. D. COPPA-GE.

1.a. JoHNsoN, o. B. DUNN E o. o. EEBLGEE, ExEoUToEs or w. sELLENs, DEO'D. WATER TUBE BUILER.

EPPLIOATION FILED SEPT. 27, 190s.

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No. 866,034. VPATENTED SEPT..17, 1907.

W. SELLERS & B. D. COPPAGE. J. G. JOHNSON, o. B. DUNN a. 0.0.1EBIGBN,BXE0UT0NS or w.s1:LLERs,-DBG'D'. WATER TUBE BOILER.

APPLICATION FILED SEPT. 27.11906.

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No. 866,034. PATENTED SEPT'. 17, 1907.

u W. SELLERS & B. D. G OPPAGE. J. a. JOHNSON, o. B. DUNN a o. o. IBBIGER, ExEoUToRs or w. sNLLERs, pBcD. WATER TUBE BOILER.

APPLIUANIONPILED SEPT. 27, 190e.

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UNITED STATES PATENT OFFICE.

JOHN G. JOHNSON, CHARLES B. DUNN, AND CHRISTIAN C. FEBIGER, OF PHILADELPHIA, PENNSYLVANIA, EXECUTORS OF WILLIAM SELLERS, DECEASED, AND BENJAMIN D.

OOPPAGE, OF WILMINGTON, DELAWARE.

WATER-TUBE BOILER.

To all whom it 'may concern:

Be it known that WILLIAM SELLERS, deceased, late a citizen of the United States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, and I, BENJAMIN' D. COPPAGE, a citizen of the United States of America, residing in Wilmington, in the county of Newcastle and State of Delaware, have invented a certain new and useful Improvement in Water-Tube Boilers, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

Our present invention relates to boilers of the socalled water-tube type and has for its object the production of a boiler which isha highly efficient steam generator and at the same time is simple and durable in construction and may be made and installed at a low cost. I

In carrying out our invention we provide one or more sets of tubes or pipes. The ends of each tube are at different levels and the lower ends of the tubes in each set are connected at different levels into a chamber or header, which we may therefore call the lower header, and their higher ends are connected at different levels into a second chamber or header which we may for this reason call the upper header. Means are provided for feeding water into the boiler, so that the water level in the lower header is'maintained above the lower ends v of some of the tubes and below the lower ends of others.

The steam generated by the boiler is withdrawn as required by the conditions of service from the upper end of the lower header. Suitable mea-ns are provided for heating all of said tubes.

In operation, circulation is set up 4through the lower tribes from the lower header to the upper header and in a reverse direction through the upper tubes. The steam generated in the tubes through which the water fiows into the upper header causes the latter to be filled with a mixture of water and steam of a specific gravity considerably less than that of the water in the first header: This mixture of steam and water flows into the upper ends of some of the upper tubes and back toward the lower header. The water thus entering the upper ends of some of the upper tubes is either converted into steam therein or carried back by gravity into the lower header. Steam collecting in the upper end of the upper header passes back into the lower header through such pipes as have both their ends un# submerged. This steam, while passing back to the lower header is dried and more or less super-heated by such passage, at the same time it serves to prevent the tubes through which it passes from being burned out by the heat of the furnace.

In a boiler constructed as above described it will be observed that all of the tubes throughout their length Specification of Letters Patent.

Application led September 27,1906. SerialNo. 336,397.

Patented Sept. 17', 1907.

are heating units effectively arranged in conjunction with the headers for the production of dry steam. In a boiler of this character, the large separating steam and water reservoir heretofore employed in water-tube -boilers and connections to the same are dispensed with. This results in a marked economy of material and hence a decrease in the cost of the boiler, and furthermore by doing away with the large reservoir filled with water and steam, loss of heat by radiation is decreased and consequently the efficiency of the boiler is increased.

The various features of novelty which characterize our invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of our invention, however, and the advantages possessed by it, reference may be had to the accompanying drawings and descriptive matter in which we have illustrated and described forms in which our invention may be embodied.

In the drawings Figure l is a sectional elevation of one form of boiler embodying our invention. Fig. 2 is a side elevation and Fig. 3 an end elevation of another form of boiler embodying our invention and Fig. 4 is an elevation of the boiler shown in Fig. l illustrating somewhat diagrammatically the means which may be employed for maintaining the desired water level in the boiler.

Referring first to the construction shown in Fig. l, A represents the upper header and B represents the lower header. The tubes O connecting the headers are in the form shown all inclined to the horizontal floor D and parallel to each other. It will be understood that back of each of the tubes C, shown, may be a row of similar tubes connected into the headers A and B at the same levels. The boiler structure proper is supported on suitable foundations E, and diaphragms or partitions F are provided for causing the heated gases from the fire on the grate D to pass amo-ng the tubes in the direction indicated by the arrows, escaping through the covering H of the boiler housing through the chimney passage I. The steam generated in the boiler is withdrawn through the service connection indicated at J. K and K1 are removable parts of the boiler housing. The proper apparent water level, that is, the water level which would be shown by a water glass, is indicated by the line L, L. As a matter of fact, in the upper header A, a bubbling mixture of water and steam extends above theline L, L to about the line M.

In the construction shown in Figs. 2 and 3 the lower header is divided into four sections Al each of which is connected to the appropriate one of a corresponding group of upper header sections B1 by a set of tubes C, one tube C being in line with each hand hole cover C1 shown in Fig. 3. The upper ends of the sections Al are connected to a steam reservoir N by pipes A2. The

steam service connection J1 leads from the reservoir N.

The lower ends oi the sections are connected to a water reservoir O by pipes A3.

Any suitable means, eitlrei` manually controlled or automatic may be employed for maintaining the water level in either' of the forms of the boiler described, at the desired level, p

In Fig. 4 we have shown somewhat diagrammatically, automatic means for feeding water into a boiler to maintain the water level therein constant, substantially as disclosed in a patent to Squire, 647,683, granted April l7, 1900. u

This apparatus may be briefly described as follows: Q represents a pipe for conveying water from a suitable source of water under pressure to the boiler.

Ql is a valve controlling the flow ol' water through the pipe Q. Steam admitted to a chamber in the valve Q1 through a pipe Q2 tends to close it against the action oi' the water' pressrire in the pipe Q which tends to hold the valve open.

Q: represents piping etc. connected at its ripper' end to the boiler above the maximum water level `and at its lower end to the boiler below the minimum water level.

Q represents piping connected to Q3 above the water level at Q5 and below the water level at Q, which, by its changes iii length due to the varying proportions of steam and water in it as the water level in the boiler changes serves to move a. valve QT to supply steam from the pipe QS to the pipe QL when the water level in the boiler is high and to connect Q2 to the exhaust pipe Qn when the water level is low.

It will ol course be understood that any other suitable means may be employed for automatically, or otherwise, maintaining the water in the boiler at the desired level. i

Having now desci'ibed oiir invention. what we claim as irew and desire to secure by Letters Patent is,

l. In a water' tribe boiler, a set of inclined tubes ar ranged one above the other, a header connecting the upper ends of said tubes, a second header connecting the lower ends of said tubes, and means for supplying heat to all of said tubes, said boiler being organized for operation with the water level in said second header' below the corresponding ends oi some of said tubes.

:2. In a water tube boiler, a set of inclined tubes arranged one above the other', a header connecting the upper end of said tribes, a second header connectingT the lower' end of said tribes, lneans for supplying heat to all said tubes and means for maintaining the water level in said second header below the corresponding ends of some of said tubes, and a steam device connection leading from t're upper end oi said second header.

In a water tube boiler', a chamber or header, a second chamberor header, a set of tubes extending between said headers, said tubes being connected into each header at different levels, and each tube being connected into said second header at a level below that at which it is connected to the first header', means for feeding water to the boiler to maintain the water level in the second header above the corresponding ends of some of said tubes, means i'or heating all of said tubes, and means for withdrawing the steam generated in said boiler from the upper end ot' said second header.

l. A water tube boiler consisting of a pair of headers, a set or sets of inclined connecting tribes, the tubes in each set being arranged one above the other, and means for' withdrawingv all the steam generated by said boiler' from the header to which the lower ends of the tubes are connected.

5. In a boiler, a set ot' inclined tubes, arranged one above another', a header into which the lower ends of the tribes open, a second header' into which the upper ends of the tubes open. ine-ans for maintaining`- the water' level below the lower ends of certain of said tribes, and means for' withdrawing the steam generated by the boiler from the header connected to the lower' ends ot the tribes.

(i. In a steam boiler', a header, tribes opening into said header' at different levels, and a second header' into which said tubes open, each tribe entering said second header at a level below that at which it enter's the iii-st header, said boiler' being organized for operation with the water level in said second header below the corresponding ends ot soine tribes and above that of others.

T. A water tribe boiler without a steam and water reservoir', consisting of a pair oi headers, a set or sets of connecting tribes extending between said headers, each tribe opening into the two headers at different levels, and the different tribes of each set opening into the saine header at different levels. and a main steam passage leading from the header' to which the lower' ends of the tribes are connected for withdraii'inj.;l from the boiler' all the steam generated by it.

S. In a steam boiler', a header, tribes opening into said header' at different levels, a second header into which said tubes open, each tribe entering said second header at a level below that at which it enters the rst header, said boilerl being organized for' operation with the water level in said second header' below the cor-responding ends of some tribes and above that or others, and a main steam passage leading from the said second header' for withdrawing from the boiler' all the steam generated in it.

JOHN G. JOHNSON, CHARLES B. DUNN, CHRISTIAN C. FEBIGER. Eircoritars of the estate of William Sellers, deceased.

BENJAMIN D. COPPAGE. Witnesses as to the signatures of John G. Johnson. Charles B. Dunn, and Christian C. Febiger:

(fairni'nn II. Ross, WILLIAM J. Fisnnn.

Witnesses as to the signature of Benjamin I). Coppage:

WILKIN L. S'rriaiioii, WILLIAM BnNzrK.