USRE12951E - of xew yokk - Google Patents

Description

E. D. BARRETT.

FLUSH VALVE.

APPLICATION TILED JAN.6,1908.

Reissued May 4,1909. 12,951.

FLUSH-VALVE.

Specification of Reissued Letters Patent.

Iteissued May 4, 1909. Application for reissue filed January 6, 1908.

To all 11:7(0'02. it 'may 0011mm:

Be it known that ILERXEST l). llnnnnrrya cltizcn of the United States, and a lCSltljcHh of New York, in the county of New York and State of l\ew York, have invented a new and ing is a full, clear, and exact description.

My invention relates to a valve which is capable of general use, but is especially applicable to the use in flushing closets.

he principal object of my invention is to provide means for permitting a sudden rush of water through the valve when opened, Whether the admission-pi 1c is the same size as the outlet-pipe-or smaller, and to provide for the gradual closing of the valve, so that a constant stream will pass through for some time Without the necessity of holding the valve open. I

' Further objects of the invention will appear in the course of the subjoined description.

Reference is to be had to the acconmanyv ing drawings, forming a part of-this specificatlon, 111 which similar cl'iaracters of'refcrenco indicate corresponding figures.

Figure 1 is a side elevation showing a preferred form of my invention with parts in section; and Fig. 2 is a similar view, on an enlarged scale, showing certain modifications.

parts in both the In the form shown in Fi 1 the valve-casing is shown as consisting of two parts 1 1 and 12, each containing a chamber for the recep= tion ofwater. being removahly. secured 'together; but they may be fastened in any other desired man ner than the one shown and may be integral with each other, if desired. 13 is a feed-pipe 15 Is a valve-seat provided'for a valve 16. A second valveseat 15 is provided below the valve-seat 15 and facing in theopposite direction, and a valve 16 is provided for co-acting with this valve-seat. The two valves are provided with a hollow stem 1.7, which has a checkvalv'elS at the bottom and isclosed at the top 19. It isalso provided with a series of perforations 20, all of the same height, and

providing communication between the inte rior of the stem and the chamber in the easing 1 1. The two valves 16 and l oare secured together by means of a. skeleton frame- T hesc two parts are shown as 1 i at which the valve'is raised.

back and forth to regulate the work 2], which depends from the valve 16 and supports the valyc' 16 at its hottonri .it the top of the skeleton frame are a series i of triangular or other projections .22, def signed for the purpose of permitting the walmproved Flush-Valve, of which the followtcr to escape with ess impetus at the instant The valvestem. 17 is not connected directly with the no valves'lti and 16, but the latter are slidnhly inountedvthereon, and a projection 23 is formed upon the valve-stem for the purpose of coming into contact with a member secured to the valve'or its frame, so that .65 when the t' alve-stem is raised the first action will be to permit the stem'alone to ascicnd and to expose the o enings 20, so that water may pass throu h them from the chamber in the casing 11; mt when the projection 23 70 strikes the element above mentioned it will cause the two valves and their frame to be.

raised. In Fig. 1 the element which the prov, ection 23 strikes is the lower surface of the valve 16 but in theform shown-in Fig. 2 a collar 24* is provided, which is connected with the valve 16 and will operate in the same manner. A spring 25 is provided for normally holding the valves down. 26 is a dash pot or cup secured near the bottom of the casing 12 in any desired manner or cast integrally therewith. Within thisdash-pota piston 27 mounted, which is designed to reciprocate with the valve-stem 17 and is consequently mounted thereon. 28 is aclosure for the bottom of the'casing 12, and when the dash-pot is formed in a separate piece from the casing 12 this closure is designed to securely hold. it in )osition.' The lower part of the dash-pot 26 is provided on with an opening .26, which is designed to be closed by a needle'valve29, mounted on a screw 29, which is designed to be operated size of the passage for the'exit of Water from the dashwt. 9.: The head of the screw may be coveret' by a cap 30 to protect it. Secured to the valvestem 17 is a collar 31, connected by a link 32 to a pivoted lever 33. This lever, if desired, may be connected to the seat 34 or other op ioo crating device. The top of the casing '11 is closed by a cap 35, which has a frame 36 for 'theguidance of the valve-stem l7,,and is pipe 13.

closing the joint between it and a. pipe 38,

. signed to be used only when the inlet-pipe 13 is smaller than the outlet pipe 14, in which case a'check-valve 13* is employed in the The operation of the device is as follows: \Vaterentering through the pipe 13 will not be impeded by the check-valve 13*, which works to permit Water to pass upwardly ing 44; but more water can flow into the tank on account of the compressibility of the air remaining therein above the inlet of the casing 46. On account of this arrangement, water will pass through the check-valve 13 oi the pipe 13 until the pressure of the waterin the tank 39 is equivalent to theprcssure upon the mains. The check-valve will then prevent a reduction of the re ssurein t, c tank. if new the lever 33 1s rocked upon its pivot by any means, thevalve-stem 17 will be caused to rise through the instrtu mentality of the link 32 and the collar 3 'lhc lirst cli'cct of this will be to force the openings .20 above the surface of the valve 16 without disturbing the latter. Pressure of the water upon the top of the valve 16 will be sullicicnt to keep the latter in closed position, bccausc the only force acting to raise it would be the friction between the stem 17 and thc valve. The exposure of the openings to the water in the casing 11 will periii] mit the water to [low through the openings and down through the tube 17. valve 18 is designed to open downwardly so as to permit the water to llow through the tube 17am! into the dash-pot under the )iston 37. Upon turning the lever giifltl'tfilfll around its pivot the stem 17'will rise sullicionlly to cause the projection 23 to engage with the lower surlacc of the valve 16. This will force the whole frame 21 and both valvcs upwardly, unscating the valve 1. 6 and permitting the water in the casing 11 and tank It) to llow through the frame 21 into the casing 12 and out through the pipe 14. This will be accomplished by the exertion. of pressure on the seat 34. The complete closing of the seat will cause the valve l6 to be scalcd upon its seat 15. This will stop ilN' How of water until the seat 13 raised,

The chcckwhen the valve 16 will be caused to drop to a certain extent and permit water to a ain will not flow fast enough to provide for the outlet of water through the pipe 14, and, conse uently the level of water in the tank 39 Wi 1 be lowered. \Vhen it is lowered below the casing 40, the float-valve 41 will drop and air will be admitted through the 0 ening 44. Up, to this time the pressure 0 the confined air above the casing will assist the natural pressure of the water in causing a ra id flow.

T e pur ose of the dash-penis to prevent the rapidcv osing of the valve 16 and to allow suliicient time to elapse to substantially empty the tank 39'and to provide for the necessary flow of water through the device. It will be obvious, that, as the only outlet from the dash-pot 26 is through theopenin 26 the flow of water from the dash -pot wi be very slow and the water will all pass through the opening 26, which is regulated by 'the screw 29".

It will be obvious that as the piston 27 gradually descends in the dash-pot it will permit the valve-frame, which rests upon the projection 23, to descend with it, and

when the valve 16 is seated the valve-stem 17 will be forced to continue its descent by the spring .25, so that the flow of water through thcjopenings 20 will be entirely cut "oil and the piston 27 will assume its lowest possible position.

In the fornrshown in Fig. 2 the pipe 13 is shown as the same size as the pipe 14. Consequently the tank 39 and its accessories, as

wvcll as the check valve 13, may be dispensed with. In plact .t' the tank and of the cap 35 a plug 45 is provided for closing the top oi'the chamber 11. in this form the two casings 11. and 1.2 are shown as integral. 'lhc'construction of the valve 16 and collar .24" is shown in section in this figure; but it the case in the construction shown in this 5 3-.

urc. The other parts shown in this ligurc are substantially the same as those shown 1n .Fi l.

valve-stem and a dash-pot in which said pis ton is adapted to rcciprocatc.

. mounted on saddstem, a skeleton frame for 2. A fiusji-valve comprising a valve proper. a hollow ste n upon wlnch said valve is shdahly mounted, said stem having a closed upper end, an open lower end provided with a chock-valve and intermediate pcritnations in its walls and provided with a projection, said pro'ection being adapted to engage the valve an move it with the piston. I

3. A flush-valve comprising a hollow stem. having a closed upper end, an open lower end and perforations 1n its walls, a valve slidingly mounted on the stern and adapted to close all of said perforations and prevent the admission of Water to the interior of said holiow valve-sten'i, a piston. on. the stem and a dashpot in which said piston is ada 'ited to move.

4. The combination of a. hollow stem having a closed end, an o Jen end and perforations in its walls, a valve slidingly mounted thereon, a piston attached to the valve-steni and movahle independently of the valve, a dash-pot in which said piston is adapted to roci rocatemeans for raisin" the valvestem, and means for causing the valve-stem to engage with the valve during a portion of its upward movenient.

5. The combination of a va.lve-c=.1sing, a tank in comnmnieath n with the upper part of said easing, means for feeding water to said tank, a valve locat d below the top of said tank and adapted to admit the passage of air thorctln-olrg h, means l'or closing said valve when the height of water in the tank reaches the level of the valve, a partition in said casing having valve-seats on opposite sides thereof, a valve-stem, two valves connecting said valves,'means in the casing for forcing the u )Ol' valve toward its seat a piston on said valvesstom below the valves, a

cup adapted to receive. the. piston, said cup.

having a passage in the wad thereof below the piston, a noodle-valve for controlling the outlet of water through said passage, means for moving said valve-stem and piston.

o. The combination of a casing provided with two valvwseats, two. valves, a .iranre, having passag s in its Walls and a central passage, for rigidl connecting said valves together, means for forcing one of said valves toward its seat, a valve-stem connected with said valves, :1 piston on the valve-stem, aoup for receiving said. piston and retarding; the motion of the latter, and means for forcing the piston into the. cup and seating, one of the valves.

7. 'The combination of a, casing having a partition provided with a valve-scat on each side thereof, a valve-stem, a skeleton frame connected with said stem and having pas sages therethrough for water, two valves in said skeleton frame adapted to seat on the opposite sides of the valve-seat, a cup surrounding the valve-stem, and a piston on the valve-stem normally in the cup, adapted to i enter the cup, said cup having an adjusta le outletl S. itliush-valve, romprisia-v a casing provided with an inlet o 3:=eniu and. an outlet openi a transverse p:1.riti ni in said asin j, intermediate said opening s, provided with an. aperture and i'ormil'i g; an inlet chamber and an outlet'rhamber respeet'K-plr, a valve seat surrtnindilr aid aperture, a main valve arranged to normally seat thereon and control the ilow ol fluid through said aperture, a piston, distant from said main-valve and see (.'1li((l thereto, a dash-pot in which said piston is arran' ed to reciprocate, said dash-pot beii provided with a relatively small outlet-aperture positioned intermediate the inner face of said piston, when at the innermost limit of travel, and the inner end of said dash-pot, wgulatablrclosure-means reg 'stering with. said aperture, arranged to remain stationary irrespocti e of the position ol the said piston, whereby during the inward stroke oi' the said piston. a, uniform flow through said aperture ol the water confined beneath mild piston, duringa prmletermined period, i, serured, means provided with a lluid passage allording communication with said dash-pot independmitlv of the aperture in said partition, eapable ol permittin. the escape of lhiid confined by the main valve in the inlet (-haz'nber prior to the unseatinr: thereof, an auxiliary valve controlling the esrape ol' fluid confined in said inlet chamber through said means, an inlet .valve (plltxnlline; the admission of fluid into saiddash-pot and below the piston therein, and means for successively actuating said auxiliary valve and said main valve I'OSPLCi'l'w'Hl'JF.

Q; 't-llnsh-valve, comprisinu a casing provided with an inlet openii p, and an outlet opening, a. transverse partition in said "asing, intermediat said openings, provided with an aperture and forming an inlet chamber and an outlet chamber respectively, a valve-seat surroundingthe aperture in said partition, a main. valve arranged to normally seat thereon and therebywut oi? the passaoo ol Water throughpaid aperture, a piston, distant liinn said main-valve andsecured thereto, adashpot in which said piston is arranged to reciprocate, saiddash-pot being provided with a relativeh small outlet-aperturt screw extending through the casing of the outlet chamber and adjustable from the out.-

of said atliustin p-screw, adapted to'register with said aperture and arming-ed to remain stationary irrespective ol" the position ol" the said piston, whereby, during the inward strokeof the piston, a. unil'orm'llow through said apert ore, of waterconfined beneath said piston, during a predetermined period, is secured, means provided with a l uid passage ali'ording communieation with said dash-pot indcpendent-l v ol' the aperturein said parti- 'an adj ustingz side thereof, a needle-valve on the inner (and ill) 'I It) tiun, capable. of permitting; the escape of llll1(l,(0llfil10(l by the mam valve in the inlet chamber, prior to the unseatnig thereof, an

auxiliary valve controlling the escape of. fluid' confined 1n Sit-1d inlet chamber, through said means, an inlet valvecontrolling the admlsslon of fluid Into S flld dash-pot and below the piston therein, and means for successively I actuating said auxiliary valve and said main valve respectively.

ERNEST D. BARRETT W. H. SW'ENARTON.

1 Vi tnesses:

l CHARLES E. V\- IRZ'

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