US416558A

US416558A - Steam-boiler

Info

Publication number: US416558A
Authority: US
Publication date: 1889-12-03
Anticipated expiration: 1906-12-03

Description

(No Model.) I 5"Sh eets-Sheet 1.

N. S. & E. R. BOWDISH.

STEAM BOILER. No. 416,558. I 49* Patented Dec. 3, 1889.

(No Model.) 5 SheetsSheet 2. N. .85 E. R. BOWDISH.

STEAM BOILER. N0.416,1558. Patented Dec. 3, 1889..

(No Model.)

5 Sheets-Sheet 3. N. S. &-E. R. BOWDISH.

STEAM BOILER.

Patented Dec. 3, 1889.

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(No Mbdel.) 5 Sheets-Sheet 4;

N. S. 8: E. R. BOWDISH.

. STEAM BOILER.

No. 416,558. Patented Dec. 3, 1889.

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N. PETERS. Phutwllllw'gfiphur, Wuhingtou, n, c.

UNITED STATES PATENT OFFICE.-

NELSON S. BOVVDISH AND EDWARD R. BOVVDISIT, OF SKANEATELES, NEWV YORK.

STEAMBOILER.

SPECIFICATION forming part of Letters Patent No. 416,558, dated December 3, 1889. Application filed February 28, 1889. Serial No. 301,564. (No model.)

To all whom it may concern;

Be it known that we, NELSON S. BOWDISH and EDWARD R. BowDIsH, citizens of the United States, residing at Skaneateles, in the county of Onondaga, State of New York, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to that class of steam-boilers known as water-tube, and is especially adapted for marine purposes, though it may be employed otherwise and still preserve the advantages herein attained.

The objects and advantages of the invention, together with its novel features, will hereinafter appear, and be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a front elevation of the boiler, the shell being removed and certain portions broken away to expose the internal arrangement. Fig. 2 is a side elevation similar to Fig. 1. Fig. 3 is a similar view in rear elevation, and Fig. 4 is a front elevation of the complete boiler.

.Figs. 5 and 6 are details in section of the able dampers or covers 5. Any ordinary form of damper may be employed; but in this instance the damper devised consists of a damper-plate 6, provided with an outwardly-bent handle 7, the bottom of which is inclined to rest against and be supported by a slanting flange or shelf 9, the handle being provided at its lower end with a series, or it may be a single, notch 8, designed to take over the edge of the shelf, and thus retain the damper at a suitable distance from the opening for the purpose of affording a proper amount of draft.

10 represents the ash-pit, which is formed by a rectangular casting 11, formed with a lower flange or base 12 for bolting in position,

and with an upper flange 13, upon which rests the grate l4.

To a vertical extension of the frame 11' is bolted or otherwise secured the lining 16 of the fire-box 17. This lining may be of any suitable metal or fire-clay, as desired.

At the front of the boiler there is formed, by opposite vertical pipes 18 and a transverse connecting-pipe 19, an arch directly over the front of the fire-box. To one of the pipes 18 is connected a supply-pipe 20, through which feed-water is forced.

21 represents a series of horizontal connected water-tubes, which is arranged in a tier at that side of the boiler opposite to which the feed-water pipe 20 is located, the tier of pipes or tubes being connected with the transverse pipe 19 at the lower end of the former. The upper tube of the series at its rear end is connected with a depending pipe or tube 22, which extends about half-way, where it is connected with an elbow 23, from which there depends a second tube 24, which enters a transversely-arrangcd mud-drum 25 at about its center, the mud-drum being located in but this we prefer for the numerous advantages arising therefrom, in that they permit The form of header shown may be supersededby other forms of connections;

of expansion of the tubes and removal of the headers or connections for cleaning the tubes. In this instance screw-plugs close the openings.

For the purpose of economizing space and exposing the greatest amount of surfaceto the action of the products of combustion as ICd each tier ext ending in opposite directions-so that the pipe immediately below another will intervene between it and the fire. The series thus constructed are placed in as close proximity to each other as practicable.

At the upper ends of each of the vertical feed-water tubes 18 are located couplings 32, having upwardly extending flanges 33, to which are bolted vertical binding-rods 34, at

:0 the upper ends of which are formed curved embracing-hooks 35, which take over the upper tier of tubes. A binding-rod 36 is arranged transversely across the series of wator-tubes and passes through openings formed I 5 in the vertical rods 34, and are providedwith binding-nuts at those ends, thus serving to maintain the tubes in proper relation to each other.

36* and 37 represent, respectively, front and 20 rear hollow water headers superimposed above the series of water-tubes 29, the upper tube of each of said series of tubes terminating in the header 36 Terminating in each of the

headers

36 and 2 5 37 are longitudinal steam and water separating chambers 38, the headers being provided with

removable plates

39 and 49, coincident with the ends of the chambers for the purpose of cleaning the latter and allowing for 0 the expansion of the tubes.

A water-separating flange 40 extends Vertically from the base of each of the

headers

36 and 37, and intermediate the chambers 38 and above the same is mounted a superim- 3 5 posed steam chamber or dome 4], which, like the chambers 38, may also be provided with a plate, as 39, for cleaning purposes, &c.

From the rear header 37 there depends at each side one member 42 of a connection,

40 which, with a similar member 43, forms a proper connection for vertical water-columns 44, which depend, and by a suitable connection 45 at their lower ends, communicate with the mud-drum 25.

At that side of the boiler opposite the feedwater tubes 21 are located a longitudinal vertical series of tubes 46 connected by ordinary return bends or headers 4-7, or by the arrangement shown at 29 and 30, the upper tube of the series connected with the drysteam chamber, and the lower one of the series being the steam-supply pipe, the whole forming a superheating-coil for further drying the steam preparatory to being conducted to the engine.

The operation of our invention is as follows: ater being forced through the supply-pipe 20 enters the series of tubes 21 and is primarily heated by the time it reaches the upper 6c tube of the series, from whence it is conducted by the tube 22 to the mud-drum. The water now rises through vertical tubes 46, connected with the mudsdrum, to each of the horizontal tiers of water-tubes 29. It is here subjected to the heat generated by the products of combustion rising bet-ween the tubes and passes into the header 36*, and from thence into the separatingchambers 3S. \Ve prefer to employ two separating-chambers where the boiler is used for marine purposes, as the wateig bcing divided, more readily remains nearer a level and is not so affected by the pitching of the vessel. When the water reaches the header 36, it is divided, so that each of the chambers accommodates-one-half of the series of water-tubes, the division being caused by the partition or supporting-flange 40. The steam generated in the chamber passes up into the dry-steam chamber 41, and from thence to the superheating-coil 46 and to the engine; or, if desired, the superheating-coil may be omit-ted and the steam conducted directly from the dry-steam chamber or dome to the engine; but we prefer the former. construetion, as the steam is superheated and rendered more expansive. The water, after being separated from the steam, passes down through their respective columns 44 and into the mud-drum, and thence returned to the water-tubes, as described, thereby forming a complete circulation. One or more columns 44 may be provided; but we prefer two, as shown, each of the columns being of a capacity in this instance of three tubes, in that there are employed in the construction but six tiers of water-tubing. Over the boiler thus constructed is mounted a suitable shell or jacket, which in this instance we form of two layers or walls of sheet-iron, having an interposed packing of heat-non-conducting material, the two walls being connected at their corners by proper spacing-castings.

48 represents water-pipe connecting with gage stand-pipe.

Through a pipe 40, connected with the dry-steam chamber or dome, steam may be conducted to the steam-gage 50, and by means of a water-tube 51, connected with the pipe 48, water may be conducted to the water-gage 52, these parts being of the usual construction.

Numerous changes may be made in the boiler with regard to details herein explained without departing from the spirit of our invention. For instance, other means maybe employed for heading and connecting the water-tubes. Said tubes may be varied in arrangement and number, as may also the separating and superheating chamber and coil, and we would therefore have it understood that we do not confine ourselves to the mechanical details herein set forth and shown, but hold that we may vary the construction in any manner and to any extent within the skill of persons conversant with the construction and operation of boilers.

In Figs. 5 and 6 we have shown a preferred manner for securing the header-

plates

39 and 49 in position in the water-headers. In Fig. 5 the rear header 37 is provided with an annular opening 50 surrounded by a similar recess 51*, in which is mounted a packingring 52", of suitable material. Upon this is seated the plate 49, having an annular shouldered recess 53.

At the inner center of the plate there is formed a screw-threaded socket 5 in which terminates a screw-threaded rod 00. The opposite end of the rod 55 projects through an opening 56, formed in the opposite header-plate 39 at the front of the waterheader 36, which opening is reamed and provlded with an exterior annular recess 57, in wh ch is seated a packing-ring 58 and a superimposed lead or other composition gasket 59, the two rings being bound in position by the nut 60, mounted upon the end of the rod.

55, said nut having superficial threads or ribs to enter the gasket-ring 59. By this arrangement it is impossible to blow the plates or packings from the water-headers.

Having described our invent-ion and its operation, what we claim is- 1. In a steam-boiler, the combination, with a feed-water coil arranged within the fire-box, ot' a mud-drum connected therewith and a series of water-tubes connected with the muddrum, substantially as specified.

2. In asteam-boiler, the combination, with a feed-water coil arranged within the fire-box, of a mud-drum connected therewith, a series of Water-tubes connected with the mud-drum,

and a separating-chamber mounted above and connected with the water-tubes and with the mud-drum, substantially as specified.

3. In a steam-boiler, the combination, with a mud-drum and a supply-pipe connected therewith, of a series of Water-tubes connected to said drum and to superimposed separating and dry-steam chambers, and a return-pipe connecting the separating-chamber and drum,

and a superheating-coil in the fire-box connected with the dry-steamchamber, substantially as specified.

4. In a steam-boiler, the combination, with a series of water-tubes, of a feed-water-heating coil mounted at one side thereof, the tubes and coil connected with a mud-drum, a separating-chamber arranged above the tubes and also connected with the mud-drum, and a drysteam chamber connected with the separatin gchamber and connected with a super-heatingcoil arranged at that side of the water-tubes opposite thefeed-water coil, substantially as specified.

5. In a steam-boiler, a system of watertubes arranged in the path of the products of combustion, in combination with oppositely-located water-headers, opposite separating-chambers connected with the headers and separated by a vertical partition, and a superimposed dry-steam chamber, also connected with the headers and communicating with the separating-chambers, substantially as specified.

6. In a steam-boiler, a system of Watert-ubes, opposite water-headers connected therewith and provided with opposite separating-chambers, and a communicating steamchamber, in combination with a mud-drum connected with one of the headers and with the water-tubes, substantially as specified.

7. In a steam-boiler, a system of watertubes centrally located and connected with a muddrum, and a feed-water-heating coil arranged at one side of said system and connected with said drum, in combination with opposite superimposed water-headers, one of which is connected with the tubes and one of which is connected with the mud-drum, and provided with a separating-chamber and a superimposed dry-steam chamber, substantially as specified.

8. In a steam-boiler, a system of Watertubes, in combination with opposite Waterheaders connected therewith and provided with connecting separating-chambers, and having a central partition arranged between the chambers and a dry-steam chamber arranged above the separating-chambers and connected therewith through the medium of the water-headers, substantially as specified.

9. The casting 11, having the flanges 13, 12, and 15, in combination with the grate 14, mounted 011 the flange 13, and the fire-box lining 16, bolted to the flange 15, substantially as specified.

1.0. The combination, with the

pipes

18 and 19, arranged over the fire-box, with the vertical feed-water-heating coil 21 connected therewith and situated above the same, substantially as specified.

11. The shell 1, having the openings 4 and the inclined shelf 9, in combination with the plate 6, having the handle 7, notched as at 8, substantially as and for the purpose specified.

12. The water-supply pipes-18, having the flanges 33, in combination with the watertubes 29 and the binding-rods 34, bolted to the flanges and bent to embrace the upper of the series of tubes, substantially as specified.

13. The combination, with the chambers 38 i and their connecting-

headers

36 and 37, having openings 50, provided with a surrounding recess and a lead or other composition gasket seated therein, of the

heads

39 and 49, the latter having the recess 53 and socket 54 and the rod 55, and the former having the screw-threaded opening 56 and recess 57, the rings 59 and 5S, and the binding-nut 60, substantially as specified.

In testimony whereof we affix our signatures in presence of two witnesses.

NELSON s. BOWDISH. EDWARD R. BOWDISH.

\Yitnesses:

L. B. FITCH, G. O. DURSTON.

IIO