US780255A - Steam-boiler. - Google Patents

Description

PTENTED JAN. 17, 1905.

W. P. L W. G. JLLLLLL STEAM BOILER.

ALPLIUATION FILED SEPT. 11.19u3.

OO OOOOOOO Frm tra. 780,255.

Patented January 1*?, 1905.

` armar Finca.

WILLIAM I). ALLEN AND W ILLIAM G. ALLEN, OF WORCESTER, MASSA- GHUSETTS; SAID WILLIAM I). ALLEN ASSISI-NOR T0 SAID IILLIAM Gr. ALLEN.

STEAllllnllEOlLER..

SPECIFICATION forming part of Letters Patent No. 780,255, dated January 1'?, 1905.

Application filed September ll, 1903. Serial No. 172,806.

Be it known that we,WILLIAM I). ALLEN and WILLIAM G. ALLEN, citizens of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented new and useful Improvements in Steam-Boilers, of which the following, together with the accompanyingI drawings, `is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this invention appertains to make and use the same.

This invention relates more especially to steam-boilers of the upright tubular type having a fire-box and surrounding water-leg at the lower part of the boiler.

The object ofA our invention is to provide, in a steamboiler having an interior column or upright chamber, in combination with the feed-water supply-pipe and adapted for purifying the feed-water or effecting the settlement of foreign or mineral substances therefrom. before the water enters the boiling-chamber, of means vfor conveniently removing the deposited matter or sediment at the foot of the settling' or purifying' column accessible at the exterior of the boiier, also to provide a cylindrical purifier-column having its lower end offset and abuttingly attached to the boiler-shell, as more fully hereinafter described.

Another object is to provide an upright steam-boiler with an efficient appliance for connecting the feed-water pipe with the side of the boiler-shell and with the side of the internally-disposed purifier-column standingI with an intervening space between said shell and column.

For the attainment of these objects our intion consists in the parts and combination of parts particularly specified, and delinitely pointed out in the claims at the end of the specification, a practical embodiment of our invention being illustrated in the accompanying' two sheets of drawings, wherein-M Figure 1 represents a part side part sectional elevation of a steam-boiler embracing the improved means of our invention. Fig'.

2 represents a vertical section of the purifierl column and a portion of the boiler-shell on a l somewhat larger scale. Fig. 3 is a sectional detail of the feed-water connection. Fig'. 4C is a fragmentary front view at the foot ofthe purifier-column. Fig'. 5 is a horizontal secn tion at line S S on Fig. 2.

Referring to the drawings, B indicates the cylindrical upright boiler-shell; li, the cylindrical lire-box with crownsheet C,froin which the flue-tubes D extend to the head lil of the boiler.

Gr indicates the annular water-leg space be* tween the shell of the fire-box and boilershell, and I the usual radially-disposed staybolts lioining the two shells across said annular space.

E indicates a feed-water pi'nifying appliance consisting of an upright hollow column or settling-pipe Am-in practice abbut six to eight inches, more orless, in diameter-suitably disposed within the boiler and standing clear of of the shell B along the greater portion of its boiling' water between the shell and column. The upper part of said column terminates with an open top end 3, horizontally coincident with the low-water line .l or at any desired distance below the regular water-level L, while the lower end is formed with an ofi'- set outward curvature or enlargement 5 in suitable manner to abut against the inner surface of the boiler-shell and is litted for connection therewith by an open end having at taching-{ianges 7. The interior of thislower end stops against the inner surface of the boiler-shell (see 2, 4L, and 5) and is secured thereto by bolts, rivets, or screw-studs 6 or in other el'cient manner. A ringl or brace 8 is provided on the interior of the boilershell for retaining the upper part of the column in position, the column being' unattachcd within said ring.

In that portion of the boiler-shell embraced bythe end of the purilier-column there is provided a hand-hole 9, witha removable closure means l0, having suitable fastening devices Il for retaining it in closed position and for readily releasing it when desired. There is also provided a blowofi` pipe 13, which con length to aflord interveningI space 2 for the.

nects with the boilershell and enters the puriiier chamber or column E adjacently above the hand-hole 9.

The feed-water-supply pipe K is arranged to deliver through the side ot' the shell into the column or settling-pipe E at some distance above its lower end and is best connected with the boiler-shell B and also with the column or pipe E across theintervening space by a tubular bushing 15, havinga uniformlythreaded exterior, with portions of varied diameter, the outer portion 16 being' tapered and threaded into the metal of the boilershell and the inner portion 17 being straight and of less diameter' and threaded into the metal of the column, (see Fig. 3,) while the feed-water pipe K is threaded into the interior of the bushing-tube 15.

The feed-pipe K and blow-off pipe 13 are provided with suitable cocks or valves 18 and 19 for controlling the flow therethrough.

The upright interior of the column E being' of much greater area than the feed-pipe, it acts as a settling-cha1nber, while its lower end 5 is formed to serve as a sedimentcollecting compartment. The eedwater rises slowly within the column, which is surrounded by the boiling water of the steam-making compartment, and the increasing heat of the feed-water causes the deposit and settlement 0i' impurities within the lower space 5 before the feed-water passes over the top of the column into the steam-making compartment oi' the boiler. Consequently7 the boiler is freed from much matter that would otherwise settle upon the crown-sheet C. lVith the column or stand-pipe E and connections K and 13 combined with the boiler, as shown, the device can serve as a settler, a mud-receptacle, and a surface blow-off.

By opening' the blow-ofiQ cock 19 the water within the column E and at the surface of the boiler down to the line J can be blown oft, taking the surface scum and floating substances from theinterior. Then desired, alfter blowing oi, as above, the hand-hole 9 can be readily opened and any accumulated material quickly and easily removed from the lower part 5 of the puriiier-column. This access being had from the exterior, the cleaning can be donev without completely emptying the boiler. Hence it will be seen that our improved means lin its combination in the manner substantially as described is oi' great practical utility. Y

It is obvious that in some instances, if desired, a part of the feed-pipe K can be used 'for the blow ott, said pipe being provided with suitably-arranged branches and stop-cocks, as will be understood by persons conversant with steam-fitting. A separately-connected feed and blow-oit is, however, preferred, as shown.

The puriiier-column E is preferably formed of such size or dimensions that it can be passed through the manhole M and the parts so disposed in relation to each other that in the event of any repairs or renewals being required the column can after releasing or breaking the fastenings 6 be taken from the interior through the manhole M and by reverse operation again replaced. In some instances a few of the adjacent tubes might have to be released to permit this removal of the column where the tubes are closely arranged thereto.

le do not claim, broadly, the idea of an upright cylindrical water-puriiier column within a steam-boiler, as we are aware that diilerently-constructed means of that class has been employed prior to our present invention; but our invention relates to the improved construction and manner of combination as defined.

Wrhat we claim as of our invention,and desire to secure by Letters Patent, is

1. in a steam-boiler, the combination of the boiler-shell, a hollow upright open-topped stand-pipe or columnvhaving a for wardly-oifset enlarged lower end portion, disposed within the boiler, with its lower end opening against the boiler-shell; means for delivering feedwater into said column at a point adjacently above said lower end portion, and means, below the feed-water delivery, for entrance into the offset lower end portion of said column, directly accessible from the exterior of the boiler-shell, for the purpose set forth.

2. A device ofthe character described, comprising in combination with a steam-boiler; a feed-water-settling column within the boiler, and a hand-hole opening directly into the interior of said column from the exterior ot' the boiler-shell. A

3. In a steam-boiler in combination as described, a hollow settling pipe or column dis= posed within the steaming-chamber, and pro vided at its lower end with a flanged mouth fitting against and attached to the boiler-shell, its upper end open to the interior ofthe boiler; the feed-water pipe connected into the side of said column, a blow-off pipe communicating' with said column below the feed-water connection, a hand-hole through the boiler-shell into said column below the blow-olf, and a removable closure means for said hand-hole.

4. 1n a' boiler of the character described, the combination with the boiler-shell, of a vertical purifier-column standing clear Within the boiler, and having its lower end turned outward and abuttingly joined to the inner side of the boiler-shell, a manhole through the boiler-shell opening directly into the interior oil said column, a removable closure-plate and fastenings for said manhole, a blow-ofi' pipe connected through the boiler-shell into the purilier-column chamber, means for delivering feed-water into said column, and means for controlling the feed andthe blow-orf.

5. 1n apparatus of the character described,

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the combination, of the upright boiler-shell, means for supplying feed-water therefor, a settling-pipe or feed Waterpurifier column standing' within the boiler, and having the lower offset end connected to the boiler-shell,

i means for unattachedly supporting the upper part of said column in position, a manhole in the boiler-shell, through which said puritier-column can be bodily inserted and removed, and a removable closing device for said manhole. y

6. In Combination, with the upright boilershell, the settling-column Within the boiler and standing clear of the shell, with its lower offset portion joined to the inner surface thereof and the laterally-connected Jfeed-Water pipe; of a threaded pipe-connecting bushing-tube therefor screwed into the metal of the boilershcll, and also screwed into the metal of the settling-column.

WILLIAM P. ALLEN. WILLIAM G. ALLEN. Witnesses:

LoUIs H. ELLIOTT, UHAS. H. BURLnIei-I.

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