US752176A - Valve - Google Patents

Description

PATENTED FEB. 16, 190 4. J. W. NETHERY.

VALVE. APPLICATION FILED OGT. 11, 1902.

N0 MODEL.

wve/Wfoz Joseph W.Nethery 1 time so as m: mnmspncns c0. Pmmurua. msumcrrun. n. c.

Patented February 16, 1904;

" UNITED: ST TES P TE T OFEIoE.

JOSEPH w. NETHERY, OFiNDIANAPOLIS, INDIANA, ASSIGNOR TO THE NETHERY HYDR ULIo vALvE COMPANY, or INDIANAPOLIS, IN-

DIANA, A CORPORATION o NEw JERSEY, I

" VALVE.

SPECIFICATION forming part of Letters Patent N0. 752,176, dated February 16, 1 904 I Application fileriOctohar 11 1902 Serial No. 126,831. (No model.)

valves which are adapted when Opened to "close automatically and resembles in many particulars the similar-valve which forms the subject-matter ofmyv pending application,

Serial No. 84,667, filedDecember 4, 1901.

In valvesof this classthe movement of the main valve results automatically from the pressure and flow of the watertherethrough as soon as a release-valve has been operated by external pressure; andthe primary object of nay-present invention is to provide a construction which shall be such thatthe operator cannot bya continuous pressure upon the release-valve cause a continuous flow of waterthrough the valve, the construction being such, on the contrary, that the principal flow of water through the valve can onlyta'ke place after the releasevalve-has been oper ated, released, and returned to its normal po- 3 spring 21. PinQO has a possible retra'ctive sition. H

A further ob'ject of my invention is to provide such improvements in details of construe:

tion as may hereinafter be pointed out.

The'accompanying drawings illustrate my 5 invention. y Figure 1 1s a central vertical the release-valve open and the main valve on section with its way upward. Fig; 2 is a similarview, the 1 main valve, however, being shown in full and being shown in closed position and the release-valve being also shown in its closed po-.- sition. 3 is a horizontal section on line 3 3 of Fig. 2. Fig. 4 is a similar view'on line on line 5 5 in Fig. 3.

4 4 in Fig 2, and Fig. 5 is a vertical section My present invention is somewhat similar in appearanceto the valve shown in my pending application before mentioned, and the leads into one side of the outer shell- 10 and communication is hadbetween the interior of the shell 10 and the interior of shell'll through a comparatively narrow elongated slit 13, formed through the wall of shell 11 substantially oppo-' site the ingress 12 and of an area substantially equalto or greater than the areaof the ingress. Slit'13 leads into "shell 11 immediately above an annulus 19, which divides the interior of shell 11 into two chambers 14 and 14. Formed at the'lower end of shell 11' isavalve-s'eat 15,

upon which normally rests a valve 16, carried at the lower end of the main-valve body 17. Thebodyl? is provided with a pair of peripheral grooves 17 17", so as'to thus form three portions a, 25, and 0, each of which is of a di ameter substantially equal to the internal diameter of the annulus 19, the valve 16 being carried at the lower end f'of the portion-c,

while immediately above. the portion a the main-valve body'li' carriesapiston 18, which is'of larger diameter than the mainbody 17 and-fi ts in the piston-chamber 14. Piston18 is T movement somewhat greater than the possible' throw of-the' release-valve, to be described. As in my previous valve, the upper ends of the two shells 10' and 11 are closed by a cap- 30, which has formed in its interior a passage "32, communicating'through a pair of converg ing passages 32 with'a by-pass 33, leadingdownward between the two shells wand 11* and communicating with the egress-passage :34 below valve-seat15. Projecting through cap 30 is the release-valve stem 36, whichpasses through a valve-seat 36?, formed in the inner face of cap 30, and through a suitable packing-gland 36. Valve-stem 36 carries at its outer end a push-button 35 and at its inner end a release-valve 27, which seats on the seat 36, as in the construction already mentioned.

pass 33, and in order to properly regulate the y The .pa'fssages'w I'orma communication be-' tween the passage 32 in cap 30 and the byflow which may take place through these bypasses 32 I provide aneedle-valve 22, mounttions X and Y, and communication is had therebetween by means of a small passage 26, the effective area of which may be effected by means of a small circular plate 28, held in any desired position with relation to the upper en of passage 26 by means of a screw 29.

In operation the normal positions of I the parts are as shown in Fig. 2, portion aof the main-valve body extending into and fitting within annulus 19 and valve 16 resting upon seat 15, the lower end of the piston 18 lying somewhat above annulus 19, while releasevalve 27 is seated against seat 36. The normal pressure of water in the ingress 12 is exerted in the two portions X and Y of the chamber 14:, the pressure within the chamber X serving to hold the main valve down and the release-valve up in closed position. The groove 17 is of less depth and of less width than groove 17 for a purpose which will appear. With the parts in the normal positions shown in Fig. 2 if the operator pressdown upon button 35 release-valve 27 will be forced downward away from seat 36 to such a distance that the suction of water, which thereupon passes through cap 30, around stem 36, into by-pass 32,

may not draw the release-valve upward, so as to close the same. As soon as a flow of water from chamber X through the by-pas's 32 is permitted by the depression of the release-valve 27 the pressure upon the upper end of piston 18 is removed, and the pressure in chamber Y, at the lower end of said piston, forces the piston upward through chamber 14, at the same time drawing the main-valve body 17 upward and withdrawing the portion (4 thereof from the annulus 19.' As soon as this withdrawal takes valvebody continues to move upward thev portion 7) is drawn through the annulus 19, and the outflow of water is temporarily discontinued until the groove 17 comes within the annulus, at which time a further outflow takes place; but groove 17, although deeper and wider than groove 17 ,"is still of such dimensions that the available area for outflow through the annulus is less than the area of ingress, so that the main-valve body continues to move upward until the portion 0 comes into the annulus and again cuts off the flow of water through the annulus 19. Shortly before the upper end of the portion 0 comes into the annulus 19, so as to cut off the outflow of water through the annulus, the bufler-pin 20 engages valve 27 and moves the same upward until it seats against seat 36, the portion 0 of the main-valve body being at that time about to enter annulus 19. While this action has been taking place (the action, in fact, being quite rapid) the water which had been in chamber X has escaped freely around valve-stem 36 into passage 32 and from thence has escaped through passage 32 into passage 33 and through thence to the egress 34:, the rate of flow through passages 32 being determined by the position of needle-valve 32 and this rate of flow determining the speed of upward movement of the main valve. As soon as the release-valve 27 has been seated on its seat 36 a preponderance of pressure upon the upper end of piston 18 is established through passage 26 and the main valve is moved downward by reason of such pressure, the releasevalve remaining closed. Under normal conditions, therefore, portion a does not rise into annulus 19, the main valve starting on its return immediately before said part reaches the annulus. Suppose, however, that the operator, attempting to obtain a continuous flow of water, holds valve 27 down while the main valve is rising. In this case buffer-pin 20 prevents a sudden shock' against the finger of the operator and also yields sufficiently to allow the main valve toproceed upwardly until portion 0 enters annulus 19 and completely shuts off the flow of water and remains in that position until the valve 27 is released by the operator and spring 21, through pin 20, has returned it to closed position, whereupon the main valve starts down, withdrawing portion 0 from the annulus and permitting a resumption of flow.

The possible yield of buffer-pin 20 is such thatwhen the main valve is in the upper position and pin 20 has served to positivelyreturn valve 27 to closed position said pin may yield through a distance substantially equal to or greater than the possible opening throw of the release-valve less the length of that much of portion 0 as lies within the annulus. By this construction the operator may not after oncereleasing the pressure above the main valve, so as to allow it torise from its seat, push button 35 downward enough to force the main valve down, so as to withdraw por- 't1on 0 from annulus 19. As aconsequence,

even though the operator maintain the release-valve away from its seat, there will be no outflow of water, and there will continue to be no outflow until the release-valve is al- I lowed to be returned in the manner already described and the main valve thereafter moved downward automatically by the accumulation of pressure in the chamber X until the portion '0 is withdrawn from the annulus and groove 17' brought into. the annulus l9. Groove 17 is of such depth and width that during the time the main valve is moving clownward through the width of said groove a suflicient quantity of water may pass through annulus 19 and valve-seat to properly flush the closet to which the valve is intended to be attached. So soon as the main-valve body'l'? has moved downward sufficiently to bring portion Z) into the annulus 19 said portion Z1 serves to temporarily substantially totally discontinue the flow of water through the annulus,

so that the flushing'action of the closet is suspended, whereupon after the portion 6 has passed through the annulus'a sufiicient quantity of water may pass through the annulus when groove 17 is travelingtherethrough to, fill the basin of the closet without a flushing action. The continued downward movement of the main-valve body 17 brings'the lower end of the portion a into annulus 19, and thus prevents further flow of water from the cham ber Y-through said annulus to the egress, and this action takes place when the valve 16 is stillza short distance from the seat 15; As a consequence the body of waterconfined in the chamber Y serves as a check against the suc'-' tionf action of the water passing through the valve-seat 15 around the lower end 0 of the main-valve body,-and the valve 16 drops slowly upon theseat 15 as the water con-fined in chamber 'Y escapes through the passage 26 into chamber X; I

I claim as my invention 7 l. The combination, in a'valve structure, of the valve-casing, the main piston-valve therein the piston-head whereof divides the interior of the piston-chamber into upper and said piston-head, a valve-seat upon which said valve is adapted to rest when in closed position, asecondary shut-off structure with which a portion of the main valve may cooperate to substantially'shut off the flow of fluid near the openposition of the main valve, said secondary shut-off structure being located that distance from the normally closed position of the cooperating portion of the valve substantially equal to the travel of said main Valve less the possible movement thereof by the auxiliary valve, whereby, when the automaticallyfc'losed auxiliary'valve shall be held open and the main valve engaged thereby, the flow nulus, of a main valve having a body fitting within said annulus and carrying a valve at its lower end, a valve-seat arranged at the discharge end of the lower chamber in position for said valve to rest thereon, a piston-head of greater area than the main body carried thereby and fitting within the upper chamber,

a by-passleading from said upper chamber,

7 a release-valve"controlling said by-pass, and a pair of separated peripheral grooves formed in the main body of the valve intermediate its ends whereby two distinct and separated flows of fluid are produced through the annulus during the automatic closing action of the main valve.

V 3. In a valve structure of the class described, the combination of the main casing consisting of a pair of chambers separated by an annulus, of a main valve having a body fitting within said annulus and carrying avalve at its lower end, a valve-seat arranged at the discharge end of said lower chamber in position for said valve to rest thereon, a piston-head of greater diameter than the main valve carried thereby and fitting within the upper chamber, a byfer-pin -carried by the main valve and yieldingly held into projected position, said buffer-pin serving to engage the release-Valve and return it to closed position when the main valve is automatically forced from its seat. V

4:. In a valve structure of the class described, the combination of the main casing consisting of a pair of chambers separated by an annulus, of a main valve having a body fitting with- -in said annulus and carrying a valve at its carried thereby and fitting within the upper chamber, a by-pass leading from said upper chamber, a release-valve controlling said bypass, a buffer-pin carried by the main valve and yieldingly held into projected position,

said bufier-pin serving to engage the releasevalve and return it to closed position when the main valve is automatically forced from its seat, and said bufier-pin having a possible movement within the main'valve such, that,

loo

' pass leading from said upper chamber, a release-valve controlling said b'y-pass, and a buf- ITO when the main valve is in its upper position, the release-valve cannot be operated so as to exert a displacing pressure upon the main valve, and means for cutting off the flow at the limit of the upward travel of the main valve.

5. In a valve structure of the class described, the combination, with a main casing consisting of a pair of chambers separated by an annulus, of a main valve having a body passing through said annulus and carrying a Valve at its lower end, a valve-seat arranged at the discharge end of the lower chamber in position to receive said valve, a piston-head of greater diameter than the main valve carried thereby and fitting within the upper chamber, a bypass leading from said upper chamber, a release-valve controlling said by-pass, a secondary shut-off structure carried by the body of the main valve in position to fill the annulus when the main valve is in its upper position, and a yielding buffer-pin carried by said main valve and arranged to engage the releasevalve and return it to closed position when the main valve rises to open position, said bufierpin having a possible movement relative to the main valve such that when the main valve is in its upper position an opening movement of the release-valve may not serve through the buffer-pin to withdraw the secondary shutoff structure of the main valve from the annulus, for the purpose set forth.

6. In a valve structure of the class described, the combination, with the main casing, consisting of a pair of chambers separated by an annulus, of a main valve having a body fitting within said'annulus and carrying a valve at its lower end, a valve-seat arranged at the discharge end of the lower chamber in position for said valve to rest thereon, a piston-head of greater diameter than the main valve carried thereby and fitting within the upper chamber, aby-pass leading from said upper chamber, a release-valve controlling said by-pass, a pair of separated peripheral grooves formed in the main bodyof the valve intermediate its ends whereby two distinct and separated flows of fluid are produced through the annulus during the automatic closing action of the main valve, and a yielding buffer-pin carried by said main valve and arranged to engage the release-valve and return it to closed position when the main valve rises to open position, said buffer-pin having a possible movement relative to the main valve such that when the main valve is in its upper position an opening movement of the release-valve may not serve through the buffer-pin to Withdraw the secondary shut-oif structure of the main valve from the annulus, for the purpose set forth.

7 In a valve structure of the class described, the combination, with'the main casing consisting of a pair of chambers separated by an annulus, of a main-valve body carrying a valve at its lower end, a valve-seat arranged at the discharge end of the lower chamber in position to receive said valve, a piston-head of greater diameter than the main-valve body carried thereby and fitting within the upper chamber, said piston having a greater effective area upon that face farthest from the valve, a by-pass leading from said upper chamber, a release-valve controlling said by-pass, a passage forming a restricted communication from one side of the piston to the other, and a shut-01f structure carried by the main-valve body immediately beneath the piston to enter the annulus before the main valve reaches its seat, whereby, before the main valve has reached its seat, the secondary shut-off structure will have entered the annulus and the piston will lie so close to said annulus as to form a cushion of fluid between itself and the annulus, for the purpose set forth.

8. In a valve structure of the class described, the combination, with the main casing consisting of a pair of chambers separated by an annulus, of a main-valve body carrying a valve at its lower end, a valve-seat arranged at the discharge end of the lower chamber in position to receive said valve, a piston-head of greater diameter than the main-valve body carried thereby and fitting within the upper chamber, a by-pass leading from said upper chamber, a release-valve controlling said bypass, a passage forming a restricted communication from one side of the piston to the other, and a shut-off structure carried by the main-valve body immediately beneath the piston to enter the annulus before the main valve reaches its seat whereby, before the main valve has reached its seat, the secondary shuts off structure will have entered the annulus and the piston willlie so close to said annulus that a quantity of fluid is momentarily caught between the annulus'and the piston before the main valve reaches its seat, for the purpose set forth,

9. In a valve structure of the class described, the combination, with the main casing consisting of a pair of chambers separated by an annulus, of a main-valve body carrying a valve at its lower end, a valve-seat arranged at the discharge end'of the lower chamber in position to receive said valve, a piston-head of greater diameter than the main-valve body carried thereby and fitting within the upper chamber, said piston having a greater effective area upon the face farthest from the valve, aby-pass leading from said upper chamber, a release-valve controlling said by-pass, a passage forming a restricted communication from one side of the piston to the other, and a shut-off structure carried by the main-valve body immediately beneath the piston to enter the annulus before the main valve reaches its seat whereby, before the main valve has reached its seat, the secondary shut-off struc- ITO tnre Will have entered the annulus and the piston Will lie so close to said annulus that a quantity of fluid is momentarily caught between the annulus and the piston before the 5 main valve reaches its seat, for the purpose set forth.

In Witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 7th day of October, A. 1902.

JOSEPH W. NETHERY.

Witnesses: V

ARTHUR M. H001), JAMES, A. WALSH.

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