USRE10107E - Nicholas clute - Google Patents

Description

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N. CLUTE.

, FEED WATER REGULATOR. hNo. 10,107. Reissued May 9,1882. il

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UNITEDv STATES PATENT OFFICE.

FEED-WATER REGULATOR.

SPECIFICATION forming part of Reissued Lettersl Patent No. 10,107, dated May 9, 1882. Original No. 247,889, dated October 4, 188i. Application for reissue tiled January 19, 1882.

To all whom it may concern Be it known that I, NICHOLAS OLUTE, a citizen ofthe United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented certain new and usefullmprovementsinAutomaticFced-Water Regulators for Steam-Boilers; and I do hereby declare that the following is a full, clear,

and exact description ot' thev invention, that will enable others skilledin the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to theletters of reference marked thereon,which form a part of this specitication.

This invention relates to an automatic feedwater regulator for steam-boilers, the object being to provide an apparatus by which a constant supply of warm or-hot waterisfed to the boiler, so as to maintain a positive water-line therein, and thus obviate the liability to explosion that results from the ordinary intermittent feed.

To this end my invention consists, first, in an improved method of automatically supplying steam-boilers with more water than is evaporated, the surplus being conveyed from the boiler by means ot' an eduction-pipe at the water-line, whereby a uniform water-level is constantly maintained, second, in the combination, with a steam-boiler and a pump, ofv a receiver for hot and cold water, adapted to receive a supply of cold water and also the overiiow hot water from the boiler, and to deliver its contents to the pump to be constantly fed to the boiler for the purpose of maintaining a uniform water-level therein third, in a receiver for hot and cold water, having an over- How-nozzle, an air-vent,a supply pipe or pipes ,bearing upon the top ofthe valve-stem; fifth,

for hot and cold water, and an outlet to a pump, by means of which the boiler is supplied; fourth, in a cut-olil check-valve consisting cfa case containing a valve-seat and inclosing a valve attached to a stem projecting through a packing-box at the upper part of vthc case, and carrying a cross-bar for engage-4 ment with a trip attached to a yokeorapumpplunger, said valve being held to its seat by pressure of water and steam from a boiler which connects with the valve-case above the valve, and by the tension of a spiral spring in the combination, with a steam-boiler and supplying-pump,ot'areceiver and valve, Wherehy water is constantly supplied to they boiler and the overflow returned to the supply-pump through the intermediate connections; and, further, iu certain details of construction, as hereinafter more fully set forth.

In the annexed drawings, which fully illustrate my invention, Figure l is a "ertical elevation, illustrating one form of my improved feed-water apparatus. Fig. 2 is aplau of saine. Fig. 3 is an end view with boiler removed. Fig. 4 is a sectional elevation of an ordinary check-valve. Fig. 5 is a sectional elevation of my improved cut-olf check-valve,

and Fig. 6 representsa modified form of my feed-water apparatus.

Like letters indicate like parts in the several views.

TheletterA designates a steam-boiler, which is provided with a supply-pipe, a, that connects with the supply-pump B through the bend or connection a', which contains an ordi- 'nary-check-'valver This pump B is supplied with water from the receiver() through a pipe, a2, a connection, c', being interposed, which also contains a check-valve. The receiver C is connected with a pipe, D, having a branch, d, for theiecepton of cold waterfrom any suitable supply,'and a branch, d', which connects with the hotwater pump E, as shown in Figs. l and 2. This pump is supplied with hot water from the boiler by the pipes e e. Between the pipes e e is a cut-olil check-valve, Ff, which regulates the quantity of overliow-water and steam supplied to the pump E. It will thus be seen that the overtlow hot water is mixed with cold water in the pipe D, and thence passed to `the receiver C. The receiver C has an overilow-nozzle, c, at the side and an airvent, o, at the top.

The cut-off check-valve, arranged to coin- Inunicate with the pipes c e', consists ofa casing, F, which is screw-threaded at its lower end to receive the pipe e, and has a screwthreaded opening in its side for the reception of the overflow-pipe e. This case is made in sections, and contains a valve-seat,f, for a cupvalve, F', having a notched rim,f. The cupvalve F is attached to a valve-stem, G,which vpasses through a packing-box, G', at the top of the case, and Acarries on tlie outer side a cross-bar, g, which engages with the trips h h,

that are attached to a yoke, H, secured to the is provided with a downward-projecting pin,

m, which serves as a guide for a spiral spring, m', which connects the cross-bar k with the upper end of the valve-stem G. By`this means it will bc seen that after the valve-cupF' has been raised by the trips hh acting upon the cross-b ar g topermit the passage of hot water from the'boiler to the hot-water pump and receiver it is again seated to cut 0E this supply by means of the pressure ot' the inflowing water and steam from the pipe e', which acts to partially elose the valve when the trips de- -scend from under the cross-bar, and this result is rendered certain and positive lby the p'ress'- ure'of the spring m upon the top of the valvestem. y

The supply-pump B and hot-water pump E are respectively connected by their plungers b e with the yokes H H', attached to the beam I, which is supported in a suitable frame, K, and connected4 by a rod, 7c', with a suitable engine. It will be observed that by this apparatus I am enabled to secure a constantautomatic feed `to the steam-boiler, so as to maintain therein I a uniform water-line, thus obviating the danger of explosion.

It will also be seen that by passing the overow-water and steam from the boiler to a reeeiver, which is also supplied with cold water, I am enabled to heat thelatter withoutthe uecessity of employing the ordinary heater.

By arranging the cut-olf check-valve I1" to be operated by the supply-pump B instead of by the hot-water pump E, I find that I can dispense with the latter pump and with the beam I. In this case thecut-off check-valve may be attached to a standard, K', near the supplypump and operated by the trips h h, attached to ayoke, H', connected with the plunger b, as shown in Fi g. 6. The hot-water pump E beingdispensed \vith,the pipe e is connected directly with the receiver C, and the-cold-water pipe is attached thereto. This makes a more simple and economical arrangement of parts, and one that operates equally well as the construction heretol'ore described, the pressure of `overowwater from the boiler being sufficient to supply the receiver with hot water without.. the necessity of employing a hot-water pump.

In order to assist the action of the supplypump, an ordinary check-valve, M, (shown in Fig. 4,),is placed in the, bend a.' on each side ofthe pump, the operation of which .will be y readily understood.

V Feed-water regulators as ordinarily constructed and applied are arranged so as to supply the boiler in an intermittent manner, the waterline varying from time tof time and to a greater or less extent, according to circumstances of operation or peculiarities of construction. In some instances the descent of the water within the boiler, resulting from its conversion into steam, permits the operation of certain devices'by which a further supply of water is introduced to the boiler, so as to raise the water-line, while the construction of other feed-water' regulators is such that a uniform water-line can be maintained only by a mode of operation that causes alarge wasteof steam.

It will be apparent that by supplying the boiler with a constant feed of more water than is evaporated or required to be made into steam, conveying the excess of heated water from the boiler bymeans of eduction-tubes at -the water-line and conducting it to the circulation, so' as to be returned to the boiler, to

getherfwith a sufficient quantity of incoming cold water derived from any suitable source, I am thereby enabled to overcome vmany disadvantages attendant upon an intermittent feed, besides obviating the liability of explosions, and effectinga rapid and economical productionl of steam.

I am aware of the' patents to J. E. Burdge, No. 95,983, October 19,1869; G. M.Mullen, No. 124,373,March 5,1872; andO. M. Bridges,`No.

167,639, September 14B-, 1875, and do not claim y the construction and arrangement of devices therein shown. It will be understood,however, that I do not contine myself to the precise details of construction herein described, as it is obvious that the construction of various parts of my apparatus maybe varied in many ways without departing from the spirit of iny invention, the essential feature ot' which vconsistsin automatically supplying the boiler' with a constant feed of more water than is required to be made into steam, and conveying the sur plus, bymeans of an eduction-tube at the desired Water-line, to a' receiver, which is also supplied: with cold water, the contents of said receiver being constantly deliveredto a pulnp which returns the water to the boiler, thus maintainingapositive water-linetherein,whicli may be much lower than ordinary, and obviating the liability tc explosion, which `is attendant upon an intermittent feed. By means of this constant feed-the water in the boileris also maintained at a more even temperature than has been heretofore attained,and a much 'lower water-line may be safely employed, thus rendering it possible to make steam withv greater rapidity, uniformity, and safety, and with -a less expenditure of fuel, than is Iusually required.

vHaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The herein-described method of supplying steam-boilers with feed-water, consisting ICO IKO

essentially in the continuous] supply of more Water than is evaporated, the surplus being conveyed from the boiler by means of an eduction-pipe at the water-line and returned to the circulation, whereby a uniform water-level is constantly maintained within the boiler, substantially as described.

2. .In an automatic feedwater regulator for steam-boilers, the combination, with a boiler and a pump, of a receiver for hot and cold water, said receiver having an overoW-nozzle and an air-vent, and being adapted to receive the overiiow hot Water from the boiler and cold water from any suitable supply, and to deliver its contents to the pump to be constantly fed to the boiler, whereby a uniform Water-line is maintained in said boiler, substantially as described.

3. In an automatic feed-Water regulator for steam-boilers, a receiver for hot and cold water, having an overiiow-nozzle, au air-vent, a supply pipe or pipes for hot and cold Water, and an outlet to a pump, substantially as described.

4. In an automatic feed-water regulator for steamboilers, a cut-oi check-valve having an entrance for Water and steam above the valve, and a valve-stem extending up through a packingbox and actuated to positively seat the valve by a spiral spring, substantially as shown and described.

5. In an automatic feed-Water rcgulator'for 'pipes e e', respectively, whereby the overiiow hot water from the boiler is conveyed to the receiver to heat the incoming cold Water, and the Whole automatically fed to the boiler, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of January, 1882. i

NICHOLAS CLUTE.

Witnesses:

PHILIP MAURO, p A. R. BROWN.

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