USRE14067E - Flushing-valve - Google Patents

Description

J. G. PERKINS.

FLUSHING VALVE.

APPLICATION FILED APR. II. 1915.

2 SHEETS-SHEET l.

Reissued Feb. 15, 1916.

'tI-IE CDLUMBIA PLAHOGRAPH 0.. WASHINGTUN. D. c.

J. G. PERKINS.

FLUSHING VALVE. APPLlcATloN man APR. 11. 1915.

Reissued Feb.15,1916.

R PH co., WASHING-row D c 'UNITED sfrarns PATENTV OFFICE.

JOSEPH G. PERKINS, OE` CINCINNATI, OHIO, ASSIGNOB, BY MESNE ASSIGNMENTS, T0

PERKINS-SKINNER VALVE CO., A CORPORATION OF ILLINOIS.

FLUSI-IING-VALVE.

Original No. 1,118,440, dated November v 1915.

To all whom it may concern Be it known that I, JOSEPH Gr. PERKINS, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful 'Improvements in Flushing- Valves, of which the following is a specifi'- cation. n Y

My invention relates to improvements in flushing valves for water-closets, urinals, and for similar purposes.

One of its objects is to provide a reliable and efficient flushing valve to be connected directly to the water supply pipe and not requiring a flushing tank.

Another object is to provide a flushing valve reliably operable irrespective of vari ations in the water supply pressure.

Another object is to provide a flushing valve of simple construction and long life and avoiding the use of rubber or similar materials which are necessarily of short life, and in which the arts, if necessary, can be readily and quiciily replaced.

Another object is to provide a flushing valve capable of operating with a 'water supply of low pressure, and also capable of withstanding and operating with a water supply of high pressure;

Another Objectis to provide' a'practically noiseless flushing valve.

my invention also comprises certain details of form, combination, and arrangement, all of which willbe fullv set forth in the description of the accompanying drawings, in which z-Figure 1 is a side elevation of a toilet with my vimproved valve mechanism in position forr use. Fig. l is a central vertical section through the valve on line .e-z of Fig. 3 with the valve` in normalor rest position. Fig. 3 is a central vertical section on line v -'v of Fig. 2 with the valve in position to flush. Fig. 4 is an enlarged central vertical section through the bypassplug. Fig. 5 is a perspective view of the same. Fig. 6 is a persp ective view of the main valve detached.

Fig 7 1s a perspective view of the same` inverted and with the auxiliary valve cage la cap 12 threaded thereto.

Specification of Reissued Letters Patent. Reissued Feb. 15, 1916.

24, 1914, Serial No. 818,650. Application for reissue filed April 17,

Serial No. 22,210.

a perspective view of the auxiliary valve seat and cage.

is 'a perspective view of the auxiliary valve and piston. f

The accompanying drawings illustrate the preferred embodiment of myvinvention, in which represents a toilet or article to be flushed, B represents the shell or casing of the Yvalve connected by a pipe 2 with the toilet and supplied with water under pressure through a water supply pipe 3.

The casing B is provided with a cylindrical valve chamber 4, a valve seat 5, a closing cap, and an exit port 7 to which the pipe 2 is connected.

The main valve D constitutes a plunger loosely fitting the walls of the chamber 4 and normally resting by gravity upon the upper end of the tubular valve seat 5. When water under pressure is admitted to the valve casing a portion of the water finds its way between the exterior of the valve D and the walls of chamber 4, and exerts a downward pressure on valve D tending to hold said valve upon the seat 5. The lower face of valve D is recessed to receive a deta'ehable valve disk or washer 8 preferably of fiber composition or soft metal'. The diskV or valve seat 8 is held in place by means of a flange9 on an auxiliary valve cage E which is threaded into a central recess 10 in valve D, and from which said valve cage E depends into the tubular valve seat 5. The upper portion of the valve D is hollowed out to form a vcylindrical chamber 11 which is closed at the upperend bv Vithin the chamber 11 is a freely moving plunger having a central downward projection 14 the lower face of which is recessed to receive a detachable disk or valve seat 15, preferably of the same material as the disk S. The disk 15 is held in place by means of a collar 16 on the valve stem 17. The valve stem 17 is threaded into the plunger H and at its lower end passes throughv a perforation 18 in the cage E, which assists in guiding and holding said stem in a central vvical'position. v

` to the chamber 21 eration,

IThe cage E is provided with an annular valve seat 19 on its upper face upon which the disk 15 seats. When not subjected to water pressure a spring 2O on the stem 17 serves to hold the disk 15 slightly off the seat 19, in about the position indicated in F ig. 3. l/Vhen water p'ressure is admitted around the tubular valve seat 5, a portion of the water finds its way through a by-pass port 22 in the wall of valve D into the chamber 11, thereby forcing the plunger H downwardly and serving tov hold the disk l5 in contact with the valve seat 19. Thus when water pressure is admitted to the chamber 21 itlinds its way to the upper faces of plungers D and H and closes both the main and auxiliary valves, and holds themV in that position until theauxiliary valve is tripped byreX- rternal force to flush the toilet.V

The periphery of the plunger D is preferably recessed, .leaving wings or fins 24 to guide it vertically in the chamber 4, and said recesses between the fins 24 are' connected by ports 25 with the chamber 11 beneath the plunger H, so that when the auxiliary valve 15 is off its seat the water is drained fromv the chamber 4 above the plunger D and from the chamber 11 below the plunger H through the auxiliary valve to the eXit This in'turn permits the plunger D to beautomatically lifted off its seat 5 by pressure of water from chamber 21, and thereby permitting a large volume of water to fiow from chamber 21 over the valve seat 5 and down the exit 7 to flush the toilet. At vthe same time there is a restricted flow of water from chamber 21 through the bypass22 to the chamber 11 above the plunger H, which slowly forces the plunger H downwardly until the disk 15 seats upon the valve seat 19, preventing further escape of water from the upper portion of chamber 4,4 whereupon the restored water pressure against the upper face of plunger D forces plunger D downwardlyr until the disk 8 closes upon the valve seat r5 and entirely cuts off' the flow of water. l

The by- pass 2,2 is' preferably bored through one of the fins 24, of plunger D and to conveniently secure an orifice sufficiently restricted to properly time the flushing op- I preferably provide a detachable plug' 27, the bore ofthe b v-pass 22 with sufficient pressure to retain it in position. The bore 28 of the plug 27 is tapered at one end to a comparatively small orifice 29, the diameter of which as compared with the volume displaced bv the upward movement of the plunger H determines the time required to resent the auxiliary valve and hence the volume of water furnished or passed each time bv the valve for the plunger H 1s elevated, a portion of the plunger H to the barrel of which is forced into' flushing purposes. yWhen water above it in chamber 11 is forced downwardly between the plunger H and the walls of the chamber 11, and escape through the auxiliary valve, while another portion is forced from chamber 11 Vthrough the bypass 22 into chamber 21, which reverse current in the by-pass, and particularly in the restricted serves to automatically keep said restricted passage open and free from obstruction. Slight pressures only are required above move said plunger downwardly, hence the leakage past said plunger from above is small, and lis always less than the amount supplied through the port 22. It will be noted that all the water required in chamber 11 above plunger H to reseat the auxiliary valve is required to reach chamber 11 by way of the by-pass 22, hence due tothe relations to each other of said chamber, plunger and by-pass, variations or differences in the pressure vof the water supply have practically no effect upon the volume of flushing water suppliedby the valve, which is practically uniform irrespec- Any -instrumentality may be employed to portion 29 of the bore of plug 27v trip the auxiliary valve when it is desired to flush the toilet, the one illustrated comprising abellcrank lever pivoted at 31 to engage and lift the stem the casing B, with one arm 32 in position to force said valve olf its seat, while the other arm 33 is in position to be acted upon by the endwise thrust of the stem 34 of a push button. 35 located outside the casing B. The stem 34 is mounted in a cap 36 threaded to the casing B. Said cap is preferably provided with alchamber 37 to receive a small plunger 38 rigidly pinnedor mounted on .the stem 34, and serving to prevent leakage around the stem 34. A spring `39 bears of the auxiliary valve to against one face of the plunger 3 8 and is Y held in place within the barrell or chamber 37 by means of a cap :40, threaded to the inner end of said barrel, said cap also servmg as 'a support andguide for the inner end of the stem 34. lVhen pressure is first eX- erted to force the auxiliary valve from its seat, the kwater above plunger H escapes through by-pass 22, iary valve opens sufficiently for water to esits the upward movement of plunger D, andv gives the mainvalve full opening', in which but as soon as the auxil- .cape therethrough, pressureV above plunger position-it remains until the auxiliary valve reseats when the mainv valve quickly closes, due to water pressure above plunger D bein restored.

y improved valve is capable of use with hot liquids or those of corrosive nature, as the material and construction are such as not to be materially affected thereby. It may also be employed asa means for measuring liquids.

The mechanism herein illustrated and described is capable of'considerable modificaengage said auxiliary tion without departing from the principle of my invention.

Having described my invention what I claim is 1. A flush valve comprising a casing having fluid supply and exit portsl and an interposed valve seat, a plunger loosely fitting the interior of said casing and constituting a lvalve to engage said valve seat, said plunger having a portion of one surface and a relatively greater area of its opposite surface exposed to the fluid pressure within said casing to normally hold said plunger in engagement with its valve seat, and to cause said valve to automatically open when said fluid pressure is released from said greater pressure area', an auxiliary valve chamber, an exit port with a valve seat through the wall of said chamber, an auxiliary plunger loosely fitting the interior of said auxiliary valve chamber and constituting a valve to valve seat, a port leading from the exterior of said plunger to said .auxiliary valve chamber at one-side of said auxiliary valve, to relea'se the Huid pressure on said plunger surface of greater area, a by-pass port leading from the exterior of said plunger to said auxiliary valve chamber at the opposite side of said valve to restore said auxiliary valve to its seat, and means to force said auxiliary valve from its seat.

' 2. A flush valve comprising a casing having inlet and outlet openings, a valve seat interposed between said inlet and outlet openings, a plunger movable to and from said valve seat within said plunger having a portion of its lower surface subject to fluid pressure and a greater area of its upper surface subject to fluid pressure to normally hold said plunger in engagement with its valve seat.I a chamber within said plunger, communicating at its lower end with the space above said plunger and communicating at its upperend by means of a restricted by-pass with the valve beneath said plunger, an auxiliary located in said chamber in position to engage a valve seat carried by said plunger to close a port leading from the lower porspace tion of said plunger, and means to lift'said auxiliary valve from its seat.

said casing and conj stituting a valve to seat upon said valve seat,

-the interior of said casing and constituting a vvalve to engage said valve seat, said plunger vhaving 'a portion 'of one surface and a relatively greater area. of its opposite surface exposed to the fluid pressure within said casing to normally hold said plunger in engagement with its valve seat, and to cause said valve to automatically open When said fluid pressure is released from said greater pressure area, an auxiliary valve chamber within said plunger, an exit port with a valve seat through the wall of said chamber, an auxiliary plunger loosely fitting the interior of said auxiliary valve chamber and constituting a valve to engage said auxiliary valve seat, a port leading from the exterior of said plunger to said auxiliary valve chamber at one side of said auxiliary valve, to release the fluid pressure on said plunger surface of greater area,v a by-pass port leading from the exterior of said plunger to said auxiliary valve chamber at the opposite side of said valve lto restore said auxiliary valve to its seat, and means to force said auxiliary valve from its seat.

4. A flush valve comprising a casing having an annular valve fluid pressure chamber surrounding said valve seat, a plunger movable to and from said valve seat within said casing and constituting a valve to seat upon said-valve seat, said plunger having a portion of its lower surface subject to fluid pressure and a greaterrarea of its uppersurface subject to fluid-pressure to normally hold said plunger in engagement with its valve seat, a chamber within said plunger, communicating at its lower end with the space above said plunger and communicating at its upper end by means of a restricted by-pass with the space beneath said plunger, an auxiliary valve located in said chamber in position to engage a valve seat carried by said plunger to close a port leading from the lower portion of said plunger. and means to lift said auxiliary valve from its seat.

5. A liush valve comprising a casing having inlet and outlet openings, a valve seat interposed between said inlet and outlet openings, a plunger movable to and from said valve seat within said casing and constituting a valve to seat upon said valve seat, said plunger having a portion of its lower surface subject to fluid pressure and a greater area of its upper surface subject to fluidV pressure to normally hold said plunger in engagement with its valve seat, an auxiliary valve chamber communicating at one of its Yends with the space above said lplunger and communicating at its other end by space seat and an yannular euxiliary plunger valve located in said aux- In Witness whereof, Ihereunto subscribe iliary valve chamber in position to engage a .my namethis 1st clay of April, A. D. 1915. vulve seat to close a port which When open f serves to vpermit the escape of Huid fromV JOSEPH G" PERKINS' the auxiliary vulve chamberand the space Witnesses:

above the first plunger, and'means to lift EfH- MESCH,

said auxiliary plunger valve from its seat. F. -.E. Bos'rEL.

Copies of this potent may be obtained for five cents eachfby kaddressing the Commissioner of Patentsx Washington, D. C.

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