US1535562A - Flushometer - Google Patents

Description

ll l1. S llr i l l Q l F l C E Application filed .lannz'iry 537, 1923. Serial 2T0. 615,264.

p 1 iohet chamber, said inlet and pressure cnarnbers being in communicetion, a valve between said inlet and outlet clenibers, and said pressure end relief chnnibers also be ing 11} connnunication,.a diaphregnn and spring operated, relief valve between said pressure and relief chambers, and air-cont pression ineens tor operating said dim phrzgni and reliefvalve, against the re siliencylo't the associated spring, from a r unote point, together with such other ports and members as may be necessary or desirable in order to render the tinshorneter complete and serviceable, all as hereinafter set forth.

The primary object of my invention to produc a flushorneter and means for operah ins; and controlling the same troin a remote point by pneumatic pressure, which are simple in construction, and positive in sction. end wherewith ere obtained a quick dischnrggje, and a slow closing .ction, involving a predetermined time interval.

This 'lhishonieter is practically noise-less,

does not leak, and is withal practicable one etlicient.

@ther objects and advantages will appear in the course of the "li llowing desc iption.

I attain the objects and secure the 2rdvnntuges oi my invention by the niesns illust "ated in the occon'ipnnying drawings, in \(lllC-ll Figure 1 is a central, vertical section through a tlushoineter which embodies a practical form oi my invention, the intermediate portion or the tube between the casing members and the compressed-air-cylinder being broken out, and the movable parts being disposed in closed and otherwise normal or initial position, and, Fig. 2, an enlarged, cross section through corsecured to the 'n of the pars, taken on.lines 2 ing down, in Fig. 1.

Similar reference characters designat similar parts thronghoit the several views. illustrated in the drawings, a valve is representer, at 1, and secured to with a packing ring 3 between, d l. The casing 1 designed to be rooted v tll the usual supply and disof an ordinary water-supply said casing has therein an inlet nn-dnn outlet chan'iber 6. The '11 d (5 are separated by means of which is provided with a hori- I seat 8. 'lhere is abress-lined P'LVSSHG cha ber 9 in thecnsing 1 below t 2, lookn been i, and a wzste, exhaust, or'reliet' chn nher 10 in said head. The top of the chamber 10 formed bya diaphragm 11 whim hell in place by means olithe Jllan 'ed base of a nipple 12, said base being nipple 12 at the upper The passage in tl icted. The axis of the terminal cons passage through the nipple liZis in the same line with the axis of the-valveseat e, and also in this line is on opening through the cap Tapped into the An annular support 18, which is adapted. to he set in the floor, has depending therefrom lower terminal of whieli'is s. constricted passage similar to that in the upper terminal of the nipple 12. The upper end of the tube 16 is secured to the bottom of the cylinder 1) by ineansot z second coupling 17, said tube opening into the constricted passage in said cylinder.

A. "vertical plunger 20 is slidingly arranged in the center of the support 18. The plunger 20 has a central passage therein which opens through the bottom thereof, and a spring 21 is arranged in said passage between the top thereot and a shouldered pert ot the cylinder 19 through which opens at the top the constricted passage in said cop l above said diaphragm.

o hollow, cylindrical casing 19 in the casing. Normally the spring 21 retains the plunger in an elevated position, so that the head of said plunger extends some distance above the support 13. Upon applying the foot to the head of the plunger 20 said plunger can be forced downwardly against the resiliency of the spring 21. Secured to the bottom of the plunger 20 is a piston-head comprising upper and under rings 22 and 23, respectively, and an interposed leather washer or cup-packing An air chamber 25 is thus formed in the cylinder 19, such chamber being below the aforesaid piston-head.

A. valve-seat 26 is provided in the tube 1 L approximately on the same level with that ot' the under side of the bottom ot the cap A relief valve 27 is provided for the valve-seat 26, the construction of said seat and valve being such that the latter opens downwardly. The valve 27 is supported from a stem 28 that is secured to the center of the diaphragm 11, and tends into and is guided by the upper-terminal portion of the tube 14,. The lower portion of the stem 28 is channeled, as best shown at 29 in Fig. 2. The tube let opens at 30 into the chamber 10, and at 31 into the chamber 9. The openings 30 are adjacent to the channels 29 in the valve-stein 28, and the openings 31 are below the valve 27. A spring 32 is interposed between the diaphragm 11 and the bottom of the cap 4:. The lower end of the tube 14 is closed by means of a-plug 33.

Slidingly arranged on the lower-terminal portion of the tube M is a hollow member 34 which serves as a valve-stem tor a valve 35 for the valve-seat 8. This is the main valve. There is annular clearance or a narrow annular space 36 between the tube 14: and the valve-stem 341. The valve-stem 34: below the valve 35 is tapped into a valve member 38. A sleeve 39, having a top flange all) and a bottom flange d1, is mounted on the valve-stem 3 1. The valve-stem 3+1: has a top flange between which and the flange 40 is a leather washer or cup-packing 43 that tightly lits the walls of the chamber 9 in which latter these members move up and down. The flanges 40 and 4.2 and the cup-packing form a piston-head. The valve 35 is clamped between the flange l1 and the valve member 33. The valve when in closed position bears on the top of the valve-seat 8, while the upper portion of the valve member 38 at such time lills the opening through said seat. The lower portion of the member 38 is trusto-conical in shape, and, when the valve and said member are elevated so that such irustroconical part of said member is in the valveseat 3, water is permitted to flow from the chamber 5 around the frustro-conical part through said seat into the chamber 6. The

trustro-conical valve member also prevents water-hammer.

The operation of this fiushometer, assuming that the parts and members are dis posed as in Fig. 1, as follows:

The plunger 20 is forced downwardly, against the resiliency ot the spring 21, and carries with it the piston-head which includes the cup-packing 2%, with the result that the air between said piston-head and the diaphragm 11 is compressed and forces said diaphragm downwardly in the center, against the resiliency of the spring 32. The diaphragm 11 carries with it the valve-stem 23 and the valve 27 and opens the way through the valve-seat 20. The chamber 9 is full of water which has entered the same from the chamber 5 through the narrow passage 36, and the tube 1% between the valve 27 and the plug 33 is also full of water which has entered through said tube through the openings 31 in the, tube, and the water from said tube and said first-- named chamber immediately passes through the valve-seat 26, up through the channels 29, and out through the openings 30 in the tube, into the chamber 10, from which latter the water escapes to the sewer. As soon as the plunger 20 is released, and it should be released directly after being depressed, the spring 21 raises said plunger and with it the attached piston-head, with the result hat the spring 28 is permitted to act on the diaphragm 11 and restore the same to its former or initial position, thus closing the valve-seat 26 with the valve 27, through the medium of the valve-spring 28. lVhile the water is escaping from the chamber 9 through the openings 31, the tube 14, the valve-seat 26, the channels 29, and the openings 30, the pressure of the water below the valve member 38 causes said member, the valve 35, and the valve-stem 34s with the other parts and members carried thereby to be raised a sufficient distance to open the way through the valve-seat 8, and permit the water to pass from the chamber 5 through said valve-seat into the chamber 6, The flow of water from the inlet chamber to the outlet chamber continues until the pressure of water in the chamber 9 is suliicient to force downwardly the piston-head in said chamber 9 and *ause the valve to close the valve-seat 8, when the [low of water from said inlet chamber to said outlet chamber is cut 0F, and further tiow ceases. The water pressure accumulates in the chamber 9, to bring about the closing of the valve 35, because the valve 27 is clos d, and water enters said chamber through the passage 36 and continues to enter until the balance of pressure changes from the chamber to the chamber 9.

ll ater enters the chamber 5 under pressure as usual, and the results described above jaeeaeea are due to the fact that a certain amount oi the water entering said chamber rises through the passages 36 into the chamber 9 until the latter is filled and has a pressure therein equal to the pressure in the chamber 5; and to the further fact that the chamber 9 is much larger in diameter than the opening through the valve-seat 8, or the area of the piston-head in the chamber 9 is greater than that of said valve-seat, so that the valve is seated with a force proportio-nate to this difference in area-when the pressure in the chambers 5 and 9 is equal. It naturally follows that the opening of the relief valve 27 enables the pressure in the chamber 9 to be reduced, with the result that the greater gressureol the water in the chamber 5 causes the valve 35 to be opened. As soon as the relief valve is closed, however, the water pressure in the chamber 9 begins to increase, by reason of the entrance into said chamber of the water through the passage 36, and continues to increase until the pressuie above the pistonhead in said chamber is greater than that below the valve 35, when'the latter is forced onto its seat, as previously observed.

More or less change in the shape, size, construction, and arrangement of some or all of the parts of this flushometer maybe made, without departing from the spirit of my invention or exceeding the scope of what is claimed. 1

What I claim as my invention, and desi e to secure by Letters Patent, is-

1. In a flushometer, a casing having therein inlet and outlet chambers, and a pressure chamber with which said inlet chamber is at all times in communication, a valve-seat between said inlet and outlet chambers, a downwardlyclosing valvefor said valve-seat, said inlet chamber opening greater thanthat of said valve, a stem connection between said valve and piston-head,

the construction and arrangement of parts being such that said valve 'is normally retained in closed position by pressure on said piston-head from the water which enters said pressure chamber from said inlet chamber, means, comprising a diaphragm-controlled valve, to permit the water to escape from said'pressure chamber I and a pressure chamber, a valve between said inlet and outlet chambers, a piston-head in said pressure chamber, the area of said piston-head being. greater than that of said valve, a stem connecting said valve and piston-head, a fixed tubular member upon which said stem is slidingly arranged with a clearance between, said tubular member depending from the top of said pressure chamber andextending through said chamber and said outlet chamber into said inlet chamber, said tubular member opening into said pressure chamber, having a valve-seat'which opens above said pressure chamber, and being otherwise closed, means, comprising a diaphragm-ccntrolled valve, to relieve the pressure in said pressure chamber, and air-compression means to force air against the diaphragm of said diaphragnrcontrolled valve to open thelatter.

8. In a llHSl'lOlllGtGI, a casing having therein communicating inlet and outlet chainbers, a valve between said chambers, means, comprising a diaphragm-controlled valve, normally to cause said first-named valve to be held in closed position, a remotelylocated casing, a plunger provided with a piston-head in said second-named casing,

whereby the air in said secondnamed casing is compressed when said plunger is forced inwardly, an air-tight conduit between said casings to direct the compressed air against the diaphragm of said diaphragm-controlled valve to open the latter, and means to enable said first-named valve tobe opened when said diaphragm-controlled valve is opened.

4. In a flushometer, a casing having therein inlet and outlet chambers, and a pressure chamber, a valve-seat between said inlet and outlet chambers, a downwardly-closing valve for said valve-seat, said inlet chainber opening through said valve-seat below said valve, means in said pressure chamber normally to retain said valve in closed position, a second valve adapted when open to permit water to escape from said pressure chamber, yielding means normally retaining said second valve in closed position, a re motely-located casing, an air-tight conduit between said casings, and an outwardly spring-pressed air-compression plunger in said second-named casing, the construction and arrangement of parts being such that the air when compressed in said second cham-- ber overcon'ies the resistance of said yielding means and causes saidsecondmlve to be opened. 7

5. In a flushometer, casing members having therein inlet and outlet chambers, a pressure chamber, and r a relief chamber, a fixed tubular member extending downwardly from the member which separates said relief chamber from said pressure chamber, having therein a valve-seat for communication between said pressure and relief chambers, opening into said pressure chamber, and being otherwise closed, a main valve-seatbetween said inletand outlet chambers, a downwardly-closing main valve for said main valve-seat, said inlet chamber opening through said main valve-seat below said main valve, a piston-head in said pressure chamber, connections outside of said tubular member and between said main valve and piston-head, said pressure chamber being in constant communication with said inlet chamber through said connections, a diaphragm in said relief chamber, a valve for said first-named valve-seat, a stem carried by said diaphragm and carrying said second-named valve, and means to force air against said diaphragm and thereby open said second-named valve.

6. In a tlushometer, casing members hav ing therein inlet and outlet chambers, a pressure chamber, and a relief chamber, a valve-seat between said inlet and on let chambers, a downwardly-closing valve or said valve-seat, said i let chamber opining through said valve-s below said valve, :1 piston-head in said pressure chamber, cennections between said valve and pistondiead, a spring-pressed diaphragn'i in said relie't chamber, a fixed tubular member extending through the member which separates said reliet chamber from said pressure chamber, and extending downwardly into said valve and piston-head connections, the arrangement being such that said reliei chamber is in constant con'nnunication with said pres sure chamber outside of said tubular memher, and the latter opening laterally into said pressure chamber, having a valve-seat in the upper part thereof, and being otherwise closcd, a valve for said second-named valve-seat, a stem carried by said diaphragm and carryin said secondnamed valve, and means to force air against said diaphragm and thereby overcome the resistance of the diaphragm spring and open said secondnamed valve.

7. In a flushometer, casing members having therein inlet and outlet chambers, a pressure chamber, and a relief chamber, a fixed tubular member extending downwardly from the member which separates said relief chamber from said pressure chamber, having therein a valve sea-t t'or communication between said pressure and relief chambers, opening into said pressure chamber, and being otherwise closed, a main valvese: t between said inlet and outlet chambers. a down vardly-closing main valve for said main valve-seat, said inlet chamber opening through said main valve-seat below said main valve, a piston-head in said pressure chamber, connections outside of said tubular member and between said main valve and piston-head, said pressure chamber being in constant communication with said inlet chamber through said connections, a (liaphragm in said relief chamber, a valve for said lirstmamed valve-seat, a stem carried by said diaphragm and carrying said secondnamed valve, a cylinder, an air-tight conduit between said cylinder and the side of said diaphragm which is opposite to that whereon said second-named valve located, and an air-conrpression plunger in said cylinder, the construction and arrangement of parts being); such that air compressed by said plunger in said cylinder operates said diapnragm to open said second-named valve.

8. In a llllSllOlilGtQ'l', casing members having therein inlet and outlet chambers, a pressure chamber, and a relief chamber, a valveseat between said inlet and outlet chambers, a downwardly-clcsing valve for said valvescat, said inlet chamber opening through said valve-seatbelow said valve, a pistonhead in said pressure chamber, connections between said valve and piston-head, a SPilHg-PTQSSNl diaphragn'i in said rel cl chan'iber, a fixed tubular member extending through the member which separates said relief chamber from said pressure chamber, and enter ding downwardly into said valve and piston-head connections, the arrangement being such that said relief chamber'is in constant comnumication with said pressure chamber outside o't said tubular member, and the latter opening laterally into said pressure chamber, having a valveseat in the upper part thereof, and being otherwise closet, valve "for said secondnamed valve-seat, a stem carried by said diaphragm and carrying said second-named valve, a cylinder, an airtight conduit between said cylindcr and the side of said diaphragm which opposite to that whereon the spring tor said diaphragm and said second-named valve are located, and an aircompression plunger in said cylinder, whereby, when said plunger is actuated to compress the air in said cylinder, the compressed air operates said diaphragm to open said second-named valve.

CHARLES H. itlKlNS.

Witnesses F. A. CUTTER. Gnoncu il liiunrnnrn.

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