US590471A - baker - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. C. BAKER. STEAM BOILEB..

No. 590,471. Patented sept. 21,1897..

UNITED STATES WILLIAM o. BAKER,

STEAM PATENT EEICE.

or NEw YORK, N. Y,

SPECIFICATION forming part of Letters Patent No. 590,471, dated September 21, 1897.

Application filed vEehruaiy 8, 1897. Serial No. 622,461. (No model.)

Be it known that I, XVILLIAM C. BAKER, a citizen of the United States, residing in .the city, county, and Statevof New York, have invented au Improvement in Steam-Boilers, of which the following is a specification.

In Letters Patent No. 537,177, granted to me April 9, 1895, a water heating apparatus is represented in which there are upper and lower pipes crossing the fire-chamber and connected by vertical pipes that are larger at the upper part than at the lower. These pipes were originallymade by me and screwed together and were employed in a fire-chamber with the fuel closely surrounding and rising above the tubes.

I find that sections can be advantageously made with upper and lower tubes and intermediate pipes that are largest at the top, and cast in iron or steel, copper, or bronze, and placed transversely of the fire-chamber over the grate-bars in connection with a division separating the fire-chamber from a flue below a steam-boiler, the upper ends ofthe tubular sections being connected to such steamboiler; and I employ return circulating-pipes from the lower part of the boiler to the sections at one end, and the steam as it is passed away from the boiler is carried upward to superheaters formed of one or more boiler-sections constructed as aforesaid, such sections being placed in the flue that takes away the products of combustion, and I prefer to make use of inclosing brickwork and a return-nue above the boiler, so that the products of combustion from the fire-chamber pass off at the rear end and return beneath the boiler and around the return circulating-pipes and then pass away over the boiler and descend around the superheating-sections before ascending* 4 and an upper tube 5,With intermediate ver- 'tical tubes G, which are largest at the upper ends, where they open into the upper tube 5, and smallest at the lower ends, where they open'into the lower tube 4f, and these boilersections are preferably of cast metal of sufiicient strength to withstand the pressure, and at one end of each tube 4 is a cap 7, by the removal of which access is given to the tube for removing any sediment.

The boiler E is preferably cylindrical and there are coupling connections F between the upper end of the upper tube 5 and the boiler, such coupling connections advantageously opening into the lower part of the boiler at one side thereof, and there are return-pipes G, connected by elbows 8 to the under side of the steam-boiler E and by elbows and vertical' portions 9 with the back ends of the lower tubes 4, so that the boiler-sections and the lower part of the boiler being filled with water the heat will act to cause such water to rise through thetubes 6 and upperv tube 5 into the boiler and return through the elbows ends of the lower tubes 4.

The boiler `may be of any desired length, and the number of boiler-sections D may be greater or less, according to the capacity required of the boiler, and these boiler-sections are advantageously placed as near each other as consistent with'the proper space for bolts and connections.

The side walls l0 are built' up and preferably closed in at the offsets 11 to the sides of the boiler E, and there is a partition II of fire-brick resting upon the upper tubes 5 of the boiler-sections and extending from the front wall 12 of the inclos ure to near the back wall 13, so that the products of combustion will pass to the rear and ascend between the end of the partition II and back wall 13, and such products of combustion will return over the partition II through the iiue beneath the boiler and passup between the front wall 12 and the end of the boiler F and return over the boiler through a flue 20, formed beneath the arch I, and will descend behind the back wall 13 in the iiue that there is between such back wall and the wall 14 at the base of the chimney J and will ascend into such chimney or final escape-iiue.

S, pipes G, and vertical tubes 9 to the back IOO The steam from the boiler E is to be taken off by any suitable pipes. I haverepresented the pipes K as rising from the boiler and extending to the rear and connecting to the superheaters formed of the boiler-sections D', standing in reverse positions and connected at their ends, the escape for the steam being from one end of the lower superheating-section. l

It will now be understood that the fuel is to be supplied upon the grate-bars B and either close to or surrounding the lower portions of the boiler-sections D, and the products of combustion rising from the fuel pass between the vertical tubes 6 and below the upper tube 5 of the boiler-sections, and in consequence of the return-bends 15 at the ends of the upper tubes 5 the rising column of hot water is easily led back over the partition H and passes into the boiler7 and the return-bends 15 and the coupling connections F are exposed to the action of the heat in the flue between the partition I-I and the under side of the boiler, and the return-pipes G are also exposed to the action of heat, so that most of the heat is absorbed and transferred to the water in the boiler-sections and in the boiler, and what heat may escape in the flue 2O between the top of the boiler and the arch I serves to superheat the steam in the top of the boiler, and such steam is further superheated by the action of the descending products of combustion in the ilue between the walls 13 and 14,

- I find it advantageous to employ a safety-vent plate at L similar to that shown in my Patent No. 473,722, and there is a chest or box surrounding the body of the safety-vent with a pipe M, leading to the ash-pit, so that in case the pressure becomes excessive and the safety-vent plate gives way the steam passes by the pipe M into the ash-pit in suicient vvolume to deaden the re, or the steam-pressure may act upon an alarm or other device for calling attention to the re of the boiler. Gage-tubes and cocks should be provided for lthe boiler, as usual.

This apparatus is applicable to the generation of steam for an engine or for any heating apparatus,.and it may also be used for heating the water in any hot-water heating apparatus.

The top part of the boiler E acts as a super'- heater in consequence of the flue passing over thesame, and the steam descending in the superheaters is raised to the temperature of the escaping gases, or nearly so.

There may be a mud-drum N below the back ends of the vpipes 4 and connected with them by vertical pipes 17, so that sediment may pass into this 1n ucl-drum and be blown off periodically.

I claim as my invention- 1. The boiler-sections each formed with an upper and a lower tube connected by intermediate vertical tubes that are largest at the top and open into the upper tube and smallest at the bottom and open into the lower tube, the same being cast integral and the lower tube having a removable cap at one end and the upper tube havinga return-bend in combination with a boiler above the boiler-sections and intermediate coupling connections between the return-bends and the boiler, and return-pipes between the boiler and one end of the lower pipe in each boiler-section, substantially as set forth.

2. The combination with a boiler, of a row of tubular boiler-sections below the boiler, each boiler-section having an upper and a lower tube and intermediate vertical tapering tubes, a return-bend and coupling connection between the upper tube ot' the section and the boiler 'and return circulating-pipes between the boiler and the back end of the lower tube in each boiler-section, substantially as set forth.

3. The combination with a boiler, of a row of tubular boiler-sections below the boiler, each boiler-section having an upper and a lower tube and intermediate vertical tapering tubes, a return-bend and coupling connection between the upper tube of the section and the boiler and return circulating-pipes between the boiler and the back end lof the lower tube in each boiler-section, a partition of refractory material above the upper tubes of the boiler-sections and below the boiler to conne the products of combustion around the tubes of the boiler-'sections and allow them to pass away at the back end and return under the boiler, substantially as set forth.

4. The combination with the steam-boiler and the inclosure for the fire-chamber and flues, of an arch over the boiler inclosing an upper iiue, grate-bars below the tire-chamber, boiler-sections crossing through the .tirechamber, each boiler-section having a lower tube and an upper tube and vertical tapering connecting-tubes and coupling. connections between the sections and the boiler, return circulating water-pipes and a partition above the upper tubes of the boiler-sections and separating the fire-chamberfrom the iiue below the boiler which contains the coupling connections and the return circulating-pipes, substantially as set forth. p

5. The-combination with the steam-boiler and the. inclosure lfor the fire-chamber and flues, of an arch over the boiler inclosing an upper flue, grate-bars below thefre-'cham'belg boiler-sections crossing through the lirechamber, each boiler-section .having a lower tube and an upper tube and vertical tapering connecting-tubes and coupling connections between the sections andthe boiler, return circulating water-pipes and a partition above IOO IIO

the upper tubes of the boiler-Sections and positions within the vertical flue, and steamseparating the fire-chamber from the flue bepipes eonueeting With such superheaters, sublo 10W the boiler which contains the coupling stantially as set forth.

connections and the return circulating-pipes, Signed by me this 3d day of February, 1897 5 e. flue between the back walls receiving the XVM. C. BAKER.

products of combustion from the flue over /vitnesses: the boiler and. superheating-sectons similar GEO. T. PINOKNEY, to the boiler-sections and standingin reverse S. T. HAVILAND.

Images