US947183A - Flushing-valve. - Google Patents

Description

S. W. LEWIS. FLUSHING VALVE. APPLIOATIOH FILED MAR.16,1908.

47,183. Patented Jan. 18, 1910.

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Pntenteil Jon. tel, twill.

Application men Ill'JZm-ch 16, infill. Serial No. 421,485.

To all whom it; may concern:

Be it known that It, SAMTJEL W" Lewis, a citizen oi the United liitntes residing at the borough of Brooklyn in the city of New of Kings noel. State of New 31 oclt, invented certain new anti useful limprovemente in i lushing-l/nlves of which the i ollowing is n specificntionnnd. descriptimn eference being lIlflClQ to the accompanying drawing by letters which indicate iclenticnl parts in all the views.

My invention relates to the class of flush ting velvee described in my previous patents lilo 66?;384 elated l I ec. 4:, i900 nntl lilo 18th? and the objects M. LilttQCl Dec" 9. of my invention are fully set forth in the fol lowing description,

linthe drawing, Figure Li a sectional View showing one form of the valve in the not of closing, Fig. 2 is a siniilin View show ing' e nioditiecl and improved construction 3 n sectional view on the vertical line y--y of Fig. 1., Fig. of; ie it sectional plain on the horizontal line TU-w of t 1g. 2 and Fig.

- 5 shows a detail ot'pzirt of Fig, l

in the di'nwing A is a discharge chamber oil passage provided with. the lateral recess a? which contains an operating arm K and. its hub lli shalt or journal and retaining gnatclea l, the discharge chamber l. is also provided exterlorly with lateral ei'ins A ppoit the operating mechanism as hereinnitei' (lQSCIllJQtl.

The main valve hotly or casing B is pref embly connected to Pillt A by a screw thread t it is provided with'un inlet connection l3 anti :1 counte bored chamber or elashpot F2 SulTOUlldlD we main-valve sent and outlet (1 'lll'se cylinder D has one and open to the prebsune and its other incl normally closed prefei'nbly by a removable screw cop (I, the not) C is: provided with o removing nut. c, valve seat 0 and an opening 6 which is closed by the screw cap N. is revoluble Within the casing B to re 'ulate the volume of discharge or to shut it oil coinpletely as; hereinafter escribed A. piston t adopted. to freely reciprocate Within the cylinder D and haying the nsunl sli lit annular clearance between pi=ton and cy inder is macle integral with a main valve 1, which latter is about 1/32 of an inch les in rlianicter than the piston F and is ptovicled with a valve washer j which is adopted to The cylinder D close upon the seat and outlet of within the CGllIilPlbOlGd chamber 3).

An interior hollow arm I forms a by-pnss 7 controlled by the i egulnting screw '1, the lay-pass leads from the side of the main valve below the {piston to the space which constitutes a pressure chamber in the closed encl ot' the cylinder between the piston F and cap C. The arm 1* is provided with a shoulder to support a Washer J which is adopted to engage and held against the sent 0 whereby the on p lt can be removed I and the ecrew T adjusted. Without having to shut oil the Water. To lhcilitate a free flow to the by-pziss f l provide the annular groove :3 below the piston, whereby the fiuid around the entire periphery of the mainmlve can fintl free. tiow by the groove 23 to and through' the by;pnss f A pieton extension (l U is connected by screw tlneeil. or otherwise to the main valve it and is peovitlotl with a valve o" for a relief valve G gt The part 0 is adapted, when closing, to form a close piston fit with in the outlet and Valve seat a the part 0 tapers slightly from the point 0 to its end at 0*, whereby when closing, the flow will be gradually reduced and an after-fill ptovidecl until Wholly stopped by the pistonentcnsion 0 when it enters the outlet.

V is, o. stein having liniiterl' movement within the part 0 U and is provided with a relief valve G and. Washei? g nclnptetl to clone upon the seat 0", it is also provided with flutes 21* for In Figs. 1 and 5 the stem f is enlentle to Form 'a loop v v, Zllfillllfiljiillfl operating nm'n 'K whereb the n'min-vnlve can be drawn to its seat. In Fig". stem V? is shown without the loop and entirely free from the arm In 1 the cylinder D is threaded at 5", whereby it can be screwed in or out to regulate the volume of discharge or screwed against the end ofthe valve body )8 about the counterbore and outlet to shut oil the flow as indicnteil by clotted lines and as described and claimed in my enitl previous patent, and when thns shut oil", by removing the cop C, and moving the" o aerating nrrn'lll to the position shown by t e dotted line. the mainvalve, piston stem V and relief valve can be taken out, and Ft. )lacecl in the some manner.

In Figs. 2 on 4: the cylinder l) is pro videcl with an annular gland d which bears passage oi timid, and. stops o ribs and revolves upon a similar gland 1) within the casing 13 and it is also provided witha pDaching nut W'-. A cylindrical extension whichconstitutes a regulating and shutoff valve is screwed at 05 onto the open end of the cylinder D and is provided with a lug or guide it adapted to move between the guide I) I) within the casing B, the bearing gland I) being cut through between the ribs (1 to allow the passage of the guide it into its place between the ribs when assembling the parts of the apparatus. Thus the cylindrical valve D is prevented by its guide h from turning, and rotation of the cylinder 1) within the screw thread d causes the cylindrical valve ,Dto move in or out to regulate the volume ofdischar'ge or to shut off the don hy tiercing said cylindrical valve against itsseat' around the outlet as etiected by theconstruction shown in Fig. l, but wastes advantage that the position of the c tinder E is always relatively the same with t eijother partseiltheapparatus. Whereas in the constructitgn shown in Fig. 1 the distance between. the valve J and its seat 0 is variable, and theettici'ency of the arm K is also affected.

In Fig. 3 m is one part of an operating journal or shaft having a core preferably made square and provided with the gland m and an operating handle M of an suitable length and form to convenient y operate the apparatus. L is another part of the shaft or journal having an extension L which latter is preferably square and adapted to pass through a corresponding square hole in the hub K of the operating arm K and to closely engage the core of the art in a screw Z bear-in a ainst the land-4 7 D D m and engaging the square extension L retains the parts together and the packing nuts RR prevent leak at the ends of the arms A A By unscrewing the packing nuts R and R also the retaining screw lthe several parts can be removed, at the same time the retaining guards a will sustain the operating arm and its hub K securely in place.

- In operation, movement of the handle or lever M rotates the journal m L which causes the operating arm K to open the relief valve G g'by moving the stem V until its stops o engage the piston 0', when the pressure within the closed end of the cyliner D being relieved by the free vent afforded through the flutes o the main-valve is easily moved to the end of its stroke, and when the handle is released, the relief valve G g instantly closes and the main valve will move toward its seat fast or slow according to the admission of fluid into the closed end of the cylinder through the bypass f or f.

The counterbore Z) about the valve seat a is substantially of the same diameter as the cylinder D and as the piston moves toward its seat, the tapered extension 0 enters the l l l outlet as shown in Fig". 2 and gradually reduces the flow until the part 0 enters as a. close fitting piston within the outlet and valve seat. a which completely stops the discharge, at the same time the main-valve F enters the counterbore b as shown in Fig. 1, when the space for admission of pressure between the walls of the countcrbore and periphery of the main valve being greatcr than any possible space for leakage or oscape of fluid under pessuro around the closely fitting piston extension 0, the liuid pressure within the counterborc 1) between the main valve F and its seat a is maintained to the instant of seating and serves as a cushion to prevent water-hammer as the valve noiselessly settles to its seat, which is of great practical advantage because a valve that hammers soon destroys its valve seat and washer, strainsthe several parts and piping of the system, causes leaks and continual repairs; but with -this construction the apparatus operates without perceptible jar or concussion under the highest pressure I have found obtainable for purposes of trial and demonstration, and even with the regulating screw T entirely removed the valve closes without hammer.

Both of my previous patents show a perforated tubular-extension below the main valve adapted to enter the outlet to gradually reduce the flow chiefly for purposes of after-till but there was space for passage of fluid around the periphery of such extension and also through the holes or perforations shown. Whereas in my present construction, it is essential that the piston-extension O is made to fit piston tight within the outlet to completely stop the tlow when it enters, and the space around the main valve within the counterbore is the same as within the cylinder, about 1/32 of an inch, so that the pressure can be maintained under the main valve as it settles to its seat. And this is the great difference between my previous and present constructions.

Various modifications can be effected within the scope of the features herein described. For instance, the arm and by-pass F f and annular groove 2i could be omitted, and a by-pass arranged in the wall of the cylinder D as at f in Fig. 2 and regulated by a controlling screw T and such regulating screw might be covered by a removable cover or cap indicated by the dotted lines. The part. L and the corresponding cores in the hub K and journal in? might also be any other shape than square to client the same result.

Having described my invention, I claim.

1. The combination of a valve casing provided with an inlet, an outlet, a valve seat and a counter-bored chamber surrounding said seat and outlet, a valve reciprocable in said casing and so proportioned to said semen chiiniherc as to provide n slight clearance between the walls of the chamber and thevnlve in the closing movement of the valve,

and an extension on said valve adopted to --5 enter and completely close the outlet in advancc of the seating of the valve.

2. 'l he combination of a valve casing pro vided with and n counterloored chamber surrounding said seat and outlet, a votive reciprocable in said casing and so proportioned to said chamber as to provides slight clearance loctween the Walls of the chamber and the valve in the closing movement of the'vnlve, an on tension'on said valve, a part of said extension lacing tapered to first enter the outlet and gruduslly reduce the llovv and. part adapted to completely close the outlet in advance of the seating oi the valve. to The combination of a: valve casing; provided with an inlet, an outlet, a valve seat and n counterli-ored chamber surrounding" at and outlet, a. cylinder revoluhie id casing, e piston for said cylinder pr with n valve reciprocahle in sold 1 c osing 4 so proportioned to said chamber us to ide a slightclearence between the "Vol f the chamber and the valve when cloein end an extension on said valve so odnp to and completely close the outlet in lldVllllQ, oi"- the sealing of the valve. The combination of a valve casing pro vided with an inlet, an outlet, a valve seat,

end counter-bored chamber surrounding snid seat end outlet, a revoluhle cylinder halving one end ivithin said casing and open toward the outlet, its other end Without the casing and closed by n removable head, a piston :tor said cylinder provided with a. valve which is reeiprocnhlc in said casing d so. proportioned to said chamber as to "do a slight clearance between the "walls o tuber and the valve in the closing -i cincnt oi the valve, an extension on said valve adopted to enter and completely close the outlet in advance of the seating of the valve.

5. The combination oi a valve casing provided with an inlet, an outlet, a valve scat and n counterhormlchamber surrounding said sent and outlet, a rcvolublc cylinder having one end closcdloy a removal'ilc head, its other end open toward the outlet, 21 piston for said cylinder provided with a valve rcciprocalrle in said casing and so proportioned as to provides slight clearance hetwecn the walls of the chamber and the valve in its closin; on said valve adapted to enter and completely close the outlet in advance of, the seating of the valve, and a hy-oass to'admit pressure into the closed end of the cylinder when the valve is closing.

6. The combination of a valve casing pro vided with an, inlet, an outlet, a valve seat an inlet, on outlet, n velveseat movement, on extension provided with sind a counterhored chamber surrounding said seat and-outlet, cylinder 'revolvable vvithin the casing und l htiing one end open toward the outlet, 2 piston for said cylinder provided with a valvereciprocahle in said casing and so proportioned as to iovide a slight clearance betweenv the W211 s of the chamber and the valve in its closing move ment, on extension on said valve adopted to enter and completely close the outlet in ad- Vance of the seating of the-valve, a lay-pass to admit, pressure into the closed end of the cylinder when the valve is closin and a means for relieving the pressure a one the piston to facilitate opening thevelve.

7. Ina flushing valve, the comhination of avsl e casing having on inlet, an outlet and c cvlinder With-one end ouch toward the I 4,. outlet, a piston for said c tinder provided with it valve adated to c ose the outlet, 21 icy-puss throu h t e periphery of said piston and valve lea ing to the closed space within the cylinder, :1 valve on the inner end of said bypass to engage a valve seat in the head of the cylinder and means of access through ,tion serving as a piston chamber in which said piston-valve 1S reoiprocahlc, the second section serving as a regulating and shut-0d valve, said hrst section being rotottilol v mounted in the casing and secnred'thereto against longitudinal movement. and said second section losing non-rotatably mounted in the casing and longitudinally adjustable on said first section whereby rotation of the first section Will move the wood section to or from its seat around sail outlet to shut oil or vary the flow thercthrough.

l). The combination of n valve casing having an inlet and an outlet, 21 piston-valve controlling said outlet, a tubular member composed of two telescoping sections, one section serving as a piston chamber in which said piston-valve is reciprocable, the second section srving as a regulating and shut-off valve, said first section being rotatably mounted in the casing and secured thereto against longitudinal movement, and said secoi'id section being noirrotatably, mounted in the casing and longitudinally adjustable on said first section whereby rotation of the first section will move the second section to or from its sent around said, outlct'to shut oil or vary the flow thercthrough, and a head closing the outer end of said first section and separable therefrom to permit the removal of the piston-valve.

10. The combination of a valve casing an inlet and an outlet, a iston valve controlling said outlet, 21 hol ow cylinder in which said piston-valve is reciprocable, said hollow eylinderbeing revoluble in said casing, one end of said cylinder being within said casing and open toward the outlet, its other end outside the casing and closed by a removable head, a cylindrical regulating and shut-0d valve in communication with the open end of the cylinder, means to prevent said shut-oil valve turning, whereby revolving the cylin der will force the cylindrical shut-oft valve against its seat around the outlet, to permit removal of the cylinder head and piston.

11. The combination of a valve casing provided with an inlet, an outlet, a valve seat and a counterbored chamber surround ing said seat and outlet, a hollow cylinder having one end within said casing and open toward the outlet, its other end outside the casing and provided with a removable head, said cylinder being revoluble within a packing nut secured to said casing, a non revoluble cylindrical extension secured to the openend of the cylinder, a piston and valve reciprocable in said cylinder and casing and so proportioned to said chamber as to provide a sli 'ht clearance between the walls of the chamber and the valve in its closing movement and an extension on said valve adapted to enter and completely close the outlet in advance of the seating of the valve.

12. The combination of a valve casing provided with an inlet, an outlet, a valve seat and a counterbored chamber surrounding said seat and outlet, a hollow cylinder having one end outside the valve casing and closed by a removable head, its other end open toward the outlet and revoluble within the casing to shut off the water, a piston and valve reciprocable in said cylinder and valve casing and so proportioned as to provide a slight clearance between the walls 0 the chamber and the valve in the closing movement of the valve, and an extension on said valve adapted to enter and completely close the outlet in advance of the seating of the valve.

13. The combination of a valve cssing provided with an inlet, and an outlet, a valve seat and a counterbored chamber surrounding said seat and outlet, a hollow cylinder having one end open toward the outlet, its other end closed by a removable head, said cylinder being revoluble within said casing and provided with a non revoluble cylindrical extension on its open end, a piston and valve reciprocable in said cylinder and easing and-so proportioned to sa d chamber as to provide a slight clearance between the walls of the chamber and the valve When closing, an extension on said valve adapted to enter and completely close the outlet in advance of the seating of the valve and means to relieve the pressure above the valve to facilitate opening the valve.

cause 14. lhe combination of a valve easing provided with an inlet, an out-let, a valve seat and a counterbored chamber surrounding said seat and outlet, a hollow cylinder which is revoluble within said casing and its other end closed by a removable head, a cylindrical extension which is not rcvoluble on the open end of said cylinder, a piston and valve reciprocable in said cylinder and casing and so proportioned to said chamber as to provide a slight clearance between the walls of said chamber and the valve in its closing movement, an extension on said valve the lower part of which is adapted to enter the outlet and reduce the flow and the up per part is adapted to completely close the and a means of relieving the pressure above the valve to facilitate opening it.

15. The combination of a valve casing provided with an inlet, an outlet, a cylinder adjustably connected to said casing and having one end open towardthe outlet, a piston and main valve reciprocable in the cylinder and casing to close the outlet, a relief valve for the main valve,a stem to open the valves, a lifting arm to operate the stem and provided with a hub having a non circular hole through it, retaining guards in which said hub is adapted to turn, an operating journal composed of two parts, one part having one of its ends cylindrical to form a bearing and covered by a packing nut, its other end of a shape to fit and pass through the non circular hole in the hub and into a similar hole in the other part of the journal'said other part beingcylindrical to form a bearing and beinq provided with a packing nut throuch which its outer end projects, a screw in said outer end to bind the two parts of the journal together and means to operate the journal and arm to open the valves.

16. In a flushing valve of the character described, r provided with an inlet and a counter bored outlet, the combination of a cylinder open toward the outlet, a piston and main valve operative within the cylinder to close the outlet, a relief valve for the main valve, a stem to operate both the relief and main valves and provided with a loop at its lower end, an operating arm to engage the valve stem within the loo a journal adapted to operate the arm on an exterior means to operate the journal, and guards to retain or support the arm in position when both journal and valve stem are removed, substantially as described.

.17. In a flushing, valve of the character described, the combination of a valve body provided with inlet and outlet ports, a cylinder adjust-ably connected to the valve body and adapted to close about the outlet. a piston and main valve operative within the cyll inder and adapted to seat upon the outlet,

having one end open toward the outlet and I outlet in advance of the seating of the valve,

a relief valve for the main valve, a stem con- 1 nected to the relief valve to open both valves and provided with a loop at its rower end, a removable .and reversible journal provided with aift exterior handle, an operating arm carried by the journal and. enga 'ing the stem within the loop to open the valves, and retnininglguards to support and retain the operating arm in POSIUOD when the journal and valve stem are both removed. 18. In a flhshing valve-such as described, Qthe' combination of a valve body provided vwith an inlet and outlet and a cylinder adjustably connected to said body, and having e journal is removed.

one "end closed and itsv other end 0 en toward the outlet, :1 piston valve wit iii] the cylinder to close the outlet, a relief valve for the piston valve, a stem to operate both valves, an operating arm to engage the stem, a jmrnal operably connected with said arm an a hu on the arm and retaining guards to keep the hub and arm in SAMUEL W. LEWIS. Witnesses: Y

JAMES ARMSTRONG, CHARLES A. ARMSTRONG.

rovided with exterior'operating means, I

place when the.

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