US1171475A - Valve. - Google Patents

Description

I. E. SWENDEMAN.

VALVE.

I APPLICATION FILED APR.-6. I911. I 1 171,475 I Patented Feb. 15,1916.

2 SHEETS-SHEET 2.

wit/mes s 66 65M 5. gar.

Tm: COLUMBIA PLANOIIRAPH .Co., WASHINGTON, n. C.

-larly in steam traps whereit was desired to provide a large outlet for the outflowing .water,.it has been iosnrir E, swnivnniviaiv, or rnovinnivcn, anonn ISLAND.

VALVE;

Application filed. April 6, 1911; Serial No. 6 1 9319 To all whom it may concern Be it known that I, JOSEPH E. SwnNDn- MAN,.2L citizen of the United States,residing at Providence, in the county of Providence and State ofRhode Island, have invented new and useful Improvementsin Valves, of

which the following is. a specification. j

p This invention relatesto improvements in valves and while to a variety of uses, it is particularly applicable to steam traps and while the illustrative embodiment herein shown and described is particularly intended and adapted-for use as a steam trap, I do not limit myself to the use of the valve for this purpose, neither do I limit myself'tothe precise embodiment of the invention herein shown and described except where such limitations are expressed in the claims.

Heretofore in the use of valves, particufound necessary to em ploy a double balanced valve, for the reason that a single valve of large area having an atmospheric pressure acting Y anism as to make the use of the single valve impracticable.

as used for such conditions are ob ectionable though a single valve, equilibrium, so to speak, thatis, there is'no pressure which must be acted against .order The double balanced valves for the reason that it is difiicult, if not alto gether impossible, seat alike, owing to the fact that dirt is apt to lodge between one valve and its seat: and

thus prevent the other-valve from' seating properly.

The object of my invention is to provide a, single valve which may be used for closing outlets of large area and which requires but little force to operate the same or, in other words, the force required is merely such as is necessary to overcome the friction and weight. of the parts because'the .valve',.al-

is: in a condition of to operate the valve. The valve, as before stated, is, particularly applicable to steam traps whether discharging into the atmosphere or hav ng the outlet connected to a vacuum pump such as is employed in 7 some steam heating systems.

; The object is further to-pro'v-ide improve 1 means forioperating the valve. r v a the invention is applicablev i Like numerals refer thereagainst' requires the use of such a powerful. mech-j to make the two valves screws 16. inlet passage 17 for thesteam aiidthewater communicating with I I y y I v 100 pipe'18 discharging into the interior ofthe A still further object is to provide a steam trap which maybe conveniently assembled and then closed by its casing.

Still other objects; and advantages will I appear (hereinafter.

' To these ends, the invention; consists in the novel features of construction'and'in the specificationof Letters Patent; Pat entgd 15,1916; 7

combination and arrangement of parts set forth in the following-specification and par- 3- ticularly pointed outin'the'claims; v

Referring to-"thedrawings Figure 1. is a vertical sectional view-of a valve embodying my invent on and particularly intended andadapted to be used-as a steaintrap. Fig. 2

is an elevation of the .valve viewed from the V 1 left hand. side of Fig. l with the hoodof the casingremoved. Fig, 3 is asection taken.

on line 3-3 of -Fig. 1'.

out the severalviews of the drawings.

In the draw1ngs,5 is a tubular valve and v, 6 a'valve seat having an orifice 7 .whichsaid valve is adapted to close; Preferably, the valve andits seat are beveled, as shown in F ig.'1. The valve 5 '-is mounted in any suitable manner to move toward and away from.

the seat 6, preferably being mounted to slide in suitable guidesS and provided ina vertical support 10. The upperend of the valve 5is .closed'byfa stationary plug 11 mounted in any suitable manner iiithe support. 10,

and thevalve tion thereto.

7 Preferably, s pp 10 is planes with -a depending boss .12 having screwthreaded engagement with a base 13 forming a part 'of a valve casing, the remainder of said valve casing being formed by a hood 1.4:

provided with aiflange 15 secured to said base in anysuitable manner, as by means of The base 13 is provided with an of condensation and.

this passage. there s; preferably provided. a

valve casing Thebase '13 isalso provided to like parts throughwith an outlet passage 19 communicating with the Outlet 7 of'thevalve seat 6. 1 Prefere ably, said valvelseat has screw-threaded engagement with'the' interior ofthe boss 12 so as to be capable of being adjusted vertically,

[if desired, and theremay be provided a 85 preferably by having screw-threaded en- 1 gagement therewith, as shown, ,being arranged to slide vertically with relacheck nut 20 screwed against the under side of the boss 12 to prevent the valve seat from turning.

Preferably, the diameter of the outlet 7 5 of the valve seat 6 is. of the same or substantially the same diameter as the internal diameter of the valve 5 so that inasmuch as the upper end of the valve is closed by the stationary plug 11, said valve presents no 10 surface whatever to be acted upon by the atmospheric pressure to unseat said valve, as would be the case if said valve were a solid valve or ifthe upper end of the valve were not closed by the stationary plug 11, it being evident that the under side of said plug is exposed to the atmospheric pressure, but since said plug is stationary it does not cause thepressure to be exerted upon the valve. Hence it follows that the I diameter of the outlet 7 and the internal diameter of the valve 5 may be made aslarge desired so as to obtain'a rapid outflow of water and yet without requiring a powerful operating mechanism, as would be the case if the valve were solid. The force of this'statement will perhaps be more evident if it be assumed that the outlet 19 is connected to a vacuum pump, as is sometimes the case in steam heating systems. In such case, it will be evident that the suction has no tendencywhatever to seat the valve because there is no area against which the suction can act. It will, therefore, be evident that in spite of the suction existing in the outlet passage 19 and the steam pressure existing in the interior of the valve casing, the force required .to unseat and seat the valve is only such as is required to overcome the friction and weight of the parts.

The valve is preferably operated by a mechanism which I will now proceed to describe.

Locatedin the upper portion of the valve casing is a suitable float 21 having a de- 4 pending stem 22 pivotally connected to the upper ends of two links 23 while the lower ends of said links are pivoted to two arms 24:, respectively, said arms being pivoted upon ears 25 provided on the support 10. The arms 24 are connected to the valve 5 by two links 26 pivoted at their lower ends to' said arms and at their upper ends to a collar 27 secured in any suitable manner to the valve 5, preferably by splitting said collar and providing a clamp screw 28. The link 23 and arm '24 constitute a toggle on one side of the valve and the other link 23 and other arm 24 constitute, a second toggle located on the opposite side of said valve. Similarly, the link 26 and arm 24 constitute a toggle located on one side of the valve 5 and the other link 26 and other arm 24 constitute a second toggle located on theoppositeside of said valve. Thus it will be seen that the valve 5 is inefi'ect actuated by ,end of said valve and a four toggles and the toggles on one side equalize the toggles on the other so that the upward, and downward movement of the float 21 isimparted to the valve without any tendency of the parts to bind or cramp.

It will now be evident that when the water rises in the casing to such an extent as to buoy up the float 21, said float will act through the mechanism just described to lift the valve 5 away from its seat 6 and thus allow water to flow outwardly from the casing into the outlet orifice 7 and thence to the outlet passage 19. As the water lowers in the casing, the float 21- will, of course, said valve is seated, whereupon the outward flow will cease'and there will be maintained within the casingat all times a large body of water constituting a deep water seal above the outlet.

Having thus described my invention, what I claim and desire by Letters Patent to secure 1s: I

1.The combination with a valve casing having an inlet and having a valve seat provided with anv outlet orifice, a valve in the form of a tube having one end adapted to rest on said seat and in open communication with'said outlet orifice at all times during the operation of the valve, an apertured guide forsaid valve, a stationary element closing the other end of said valve and a float of constant displacement capacity and continuously subject to substantially balanced pressure connected laterally through said guide to said valve for moving said valve with relation to said seat and in relation to said stationary element.

2. The combination -with a valve casing having an inlet and having a valve seat provided with an outlet orifice, a valve in the form of a tube having one end adapted to rest on said seat-and in open communication with said outlet orifice at all times during the operation of the valve, an apertured guide for said valve, a stationary element carried by said guide closing the other float of constant displacement capacity subject to substantially balanced pressure for moving said valve with relation to said seat and with relation to said stationary element.

3. The combination with a valve casing having aninlet and having a valve seat provided with an outlet orifice, a valve in the form of a tube having one end adapted to rest' on said seat and in open commrmicationrwith said outlet orifice at all times during the operation of the valve, an apertured guide for said valve, a stationary element carried by said guide closing the other end of said valve and a float of constant dis placement capacity and continuously subject to substantially balanced pressure, said float being disposed in alinement with said gradually close the valve until i hood mounted upon of said elements.

witnesses.

Witnesses Copies of this patent may be obtained for five cents eacli, by addre ssing the Washington, D. 0.

float above the valve member, in alinement v therewith and connected thereto by-a link- 15 age to impart axial movement thereto, and a the base inclosing all In testlmony whereof I have hereunto set my hand in presence of tWo subscribing 20 JOSEPH E. SW-ENDEMAN.

LoUIs A. JoNEs SADIE V. MCCARTHY.

Commissioner of 1 Patents,

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