US1075332A - Air-valve. - Google Patents

Description

J. M. CHAMBERS.

7 AIR VALVE.

APPLICATION FILED OUT. 15, 1912. 1,0?5332B Patented 0ct.14,1913.

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JAMES M. CHAMBERS, 0F TWIN FALLS, IDAHO, ASSIGNOR 0F TWO-THIBDS TO JOHN M.

MAXVI ELL AND CHARLES O. LONGLEY, BOTH 01E TWIN FALLS, IDAHO.

AIR-VALVE.

Specification of Letters Iatent.

Patented Get. 14,1913.

Application filed October 15, 1912. Serial No. 725,839.

To all whom it may concern:

Be it known that I, J AMES M. CHAMBERS, a citizen of the United States, residing at Twin Falls, in the county of Twin Falls and State of Idaho, have invented certain new and useful Improvements in Air-Valves, of which the following is a specification.

My invention relates to air valves of the type used on steam boilers or on conduits such as the radiators included in a steam heating system and one of its objects is to provide a device of simple construction which, normally, provides an outlet for air contained in, the vessel or conduit, with which it is connected and which operates by the heat of steam admitted thereto, to close the said outlet after all the air has escaped and to reopen the same for the purpose of preventing the formation of a partial vacuum, only when by discontinuation of its supply or other causes, the steam contained in the vessel or conduit is reduced in temperature.

Another important object of my invention resides in the provision of means for the drainage of all water of condensation from the valve housing the moment it is formed so that the valve can at no time be rendered inoperative by the presence of a quantity of water in its housing, as often occurs in many of the air valves at present in common use.

With the above objects in view my invention consists briefly, in providing a housing which by means of two separate passages, is connected with the vessel or conduit to which the valve is applied and which has an opening for the escape of air into the atmosphere. A valve disposed to close said opening by its movement in one direction, is mounted to be lifted by the expansion of a body of mercury or other expansive fluid which is contained in a vessel disposed within the housing in spaced relation to its wall. 7

The steam entering the housing and filling the space around the vessel, heats the lat ter and causes the expansion of the fluid contained therein, which in consequence lifts the valve to its closing position with relation to the air outlet. The parts remain in this position until by a decrease in the temperature of the steam, the vessel is cooled and its contents are contracted when the, valve, impelled by gravity will reassume its normal position and reopen the outlet for either the escape of air into the atmosphere or for the admission of air to destroy a partial vacuum that may form by the condensation of steam as thesystem cools. The lower one ofthe two passages above referred to, connects the bottom portion of the housing with the radiator for the discharge of water of condensation.

An embodiment of my invention as outlined above, is shown in the accompanying drawings in the two views of which like parts are similarly designated and in which,

Figure 1, represents a vertical section through my improved air valve as applied to a radiator of a steam-heating system, and Fig. 2, a vertical section taken along the line 2-2, Fig. 1.

Referring to the drawings by numerical characters, 2 designates the cylindrical valve housing provided with a laterally extending, exteriorly threaded nipple 3 by means of which it is connected to the end section 4 of a radiator. A vertically disposed outlet 5 at the lowermost point of the concave bottom portion of the housing, as an exterior screw thread for the application of a nut 6 which has a swivel connection with a curved conduit 7 and serves to produce a steamtight joint between the latter and the outlet 5. The opposite end of the conduit is threaded and secured in a correspondingly threaded opening formed in the radiator section at a point below that at which the nipple 3 is connected, for the discharge of water of condensation from the valve housing. The open upper end of the housing is closed by means of a screw cap 8 provided 'with a central opening which is threaded to secure the upper end of a yoke 9 which thus is suspended within the housing. The yoke 9 consists of an axially bored stem 10 which it its upper extremity is connected in the opening of the cap, and a circular body portion 12 which is integrally connected with the stem by means of a pair of diametrically opposite arms 13. The open-ended bore 21 of the stem is counter-sunk at its lower end to provide a seat 14 for a conoidal valve 15, the stem 16 of which is loosely fitted in a central opening 17 in the body portion 12 of the yoke. The body 12 has at its lower surface, an mternally threaded recess into which is secured the upper, correspondingly threaded end of a cylindrical cup 18 Which is thus spended f m the y ke in eeeed rel h to the interior surface of the housing The cup 18 is partially filledwith a quans tity of mercury or other suitable fluid which when expanded by the influence of heat applied exteriorly of the cup, acts upon a float piston 19 which is securedatthe lower end of the Valve stem and is loosely 10 fitted in the vessel 18.

hh a e when in ts helmet eee tien, in whi i eeeeeetee r m it hee is, p-ehde itrem h yehe 9 by me ns at e t 20; Wh eh hei e; e ehr d a the pper nert e 5 Qt i s em, rest heelhe upp r s rf ce t he heely 12. When the va ve is n t is eeettieh; th e'i eh 19 at h eve nd t to e em ei hee ete the t e eh fee 9 the fluid in the cup or extends a short distance 2Q bey th Sein it hehe: hy ehe tha th q anti y et fluid epeee l i he Yee el i ete mined y he d ee r f eme ret e et he e e hl sed in th s tem te' whieh he he vely app d 2' Wh le th Part eeein th ie orma Peeition, as above described, the interior of the valye housing is continuously in communication With the atmosphere through the openen ed here 2 n t e yelee n Wh a the ee. t a point of eeera en e th he syst m; steam fe adm tted ihte the nd i s comprised therein, it'driyes the air before it e d th ehe he utlet in t Y lv hh l it 'ree hee the ast seetie e the ed er ee e wh h th et e eei l eel w en, filling h eeee b twe n th Wa of th heh h e and t e uter ehrfae 1 the Vesse 8,v t heats t e atte ehees the expans n Of e fl d entein d there n, h e n ee qu e r ses n the. can and ifts he eh'e until it engages its seat at the lower end of he he e 1 and h s leeee t e eemhlu i etie'n bet een th 'redie t an the e heephere- Whe Su seque t y, t e st am in t th adiater i re u e in temperat r e her by discontinuation of its upply or other auses, he u d n he we is erehe iem t ly C n ra ted W th h result tha it le e is ower d an he v lve imp lled by gravity,

to is sepa from it unti e disk has in eeme et een th upper ehr e t e body pe tien 12 of t e ye By the e et h ie ine t e emmhni a en he tt eli th nter or ef he radiator and the. ethi e 55 ehj re; he f me en et a partia va ehih e eendeneat en e th s e m s e e d d and. he Wat r o eh eneatieh terme hr he eelinge t t st m. hi th valve he eia i d ained he etrem threue the ee li hiit 1 69 nd disehaee ed em. the y em in th usual manner. t I wi l he ah e zved tha af er the flui in h r ssel has c mmen ed te expemi, the upwa d mo ment at the alve i a elet ed by, the p essure the team gain t the lower surface of the disk, thus effecting a substantially instantaneous closing of the outlet ei'a'aa preventing ate escape 'of steam through the saine; The'provisionof the two passages between the radiator and the Valve 7 housing balances the pressure Within the latter and thus allows an unobstructed flow of Water of condensation through the conduit 7. The Value mechanism being suspended in its entirety from the cap may be readily 75 removed from the housing for the purpose et eeP etieh er eee 'ehe it i eth ,ie lhrh ee e' tee e the de j e them he eeh tee he e use e teel te t er metha e. ih he e e eieh ee eh e e ehi (it H v .i ,r talhe 'ihethew 1e tlt 'l tttw ezt eete' re wh eh the rethlee te e ef eh eeehee hh tele,

te .e he heeeee ehe hee ehhli ele' eee H g thus de ribegl my inyention What ef eiee te e ee eeLea eeeet j h eir va ve t he her te ele etihed etheti e hehethe' eeeh i we end ee he mean h he e heeette e-t -te interi r with a radiator or the like, a coycr 'eehhe e. u -h the he efi e lte v v M he and avi g eu-tlet. a met-t ary e pee e t em he n rat e face t e h-Qdy 0e the 1 eeid' 'l ee a ehn lt en hr which the, Y sel is cltachablysuspended from covet; and which has a Valve seat in communicat h w t sa d utl t; vale l l'epte a e141- said valve seat a). close the outlet and no ma y eh e nl l m eat- 1. eeeeeeeee; end 'e'tl ieeee el n said e l end Ceteete w h ee 'v l e t me e same ihte n emen itht e velv'e eee l t ei ,9

a y th e Peh'eiY ae ieh 9 -he'eei h da (rt mercury.

2-. he h v l e eat th a e et d eeri e ee e he heaet e; me at tehepe nd ehet ev eeee, fer the ee ee tien e the hter e Wlth e ta eteee the i e we reth ehlae hh etest th he ho s te e i e eeeh het e ite ha e e e een e eiee Ptl t a rais eea et 'ih the sets eee tuhe he ihe ai' -eae ee extendi e h the ame h eeh t e'eeel ele ae e ehe heede eal sa d yeke n epee d e atiea e t e ht eiee ehri-te e. etthe hehethe a' elve. adapted t eeethe g he f ea e iiet teeth he interior of the housing into. the said passage by engagement with the sleuth theteet. a val e n 1. 9.3 .3 eeeele exteeeeded eheat th sa meht a fi ffih eei he head et' thetehh h ee et eeeel, and; a leet h et Yeee l; and eeeee ted: with said rel-Y tee mete he same in e gagem nt with. ea e th hth when. t tted hr th QXPQILT eire eetieh Qt eiet h ly t mere uy 3-, h the Yel e hit the. eh tee ee sleeeeibed eehlhti ihg hehe hg ating n apehthre and means for the connection of its interior With a radiator or the like, a yoke connected in said aperture and having a passage for the outlet of fluid from the interior of the housing and, opposite to the mouth of said passage, a seat for the suspension of a valve a valve adapted to close said passage by engagement With its mouth, a disk connected With said valve, and normally resting upon said seat, the said yoke being constructed to admit fluid within the housing, to the said seat for action upon the said disk, a mercury vessel suspended from the yoke in spaced Copies of relation to the interior surface of the housing, a body of mercury in said vessel, and a 15 float in said vessel, connected with said valve for moving the same in engagement With the mouth of said passage, When lifted by expansion of the said body of mercury.

In testimony whereof I have affixed my 20 signature in presence of two Witnesses.

JAMES M. CHAMBERS.

Witnesses:

C. O. LONGLEY, HARRY J. BENOIT.

this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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