US1551853A - Valve - Google Patents

Description

Sept. 1, I925.

- F. SETTE VALVE angi a; Filed Nov. 5,1923

7 III-1 9.

ATTORNEYS Patented Sept. 1,1925. 1

FRIEDEBICK BETTE, OF IRON RIDGE, WISCOfiSIN, ASSIGNOB F ONE-FOURTH TO in valves such as'are particularly adapted to KADIA same coxsm.

Continuation of application Serial To all whom it may I 'Be it known that I, FRinnERIoK SETTE, acitizen of the United States, residing at Iron Ridge, county of Dodge, and State of Wisconsin, have invented new and useful Improvements in Valves, o-fwhich the fol= lowing is a specification.

This invention relates to improvements control the flow of liquids. This application is a continuation of a prior application filed by me November 3, 1923, Serial No. 672,696, and entitled Valves. h

It is one of the-primary objects of this invention to produce a novel and simplified valve construction with few' parts and adapted for manufacture at comparatively small expense. More specifically stated, it

is my-purpose to provide 'a valve needing no packing, and in l which the valve spring is fitted directly between the casing and the valve, whereby cross heads,- pins, or the like to receive the spring are dispensed with and;

' the construction is simplified.

It is a further object,- of this'invention to provide a valve: in which the stem and head are made of. difl'erent materials, and the 'valve proper or head being of relatively soft the.constructionofthe valve andtie procmetal in orderthat it may seat effectively against the hard metal of the casing. The attachment of a soft metal head toa relatively harder valve-- stem involves diificulties which, so far as I amaware, have not been heretofore solved in a satisfactory. manner.- Other objects will appear more fully from the following detailed .descri tionof ess by which-the valve head is attached to the valve stem.

The drawing is an axial section through a .valvecasinganddisclosing'a valve in a [devicejconstituting one embodiment of this invention,

The valve casing is made up of two parts 5 and 6 which include respectively inlet port 7 and outlet port 8. The casing portion 5 includes-an. externally threaded. sleeve 9 within which inlet port? is disposed in the manner indicated. Betweenports 7 and the body of casing portion 5 is disposed a shoulden-lQ against whichthe valve spring ,11 isjarrangedto seat. The casing portions VALVE.

No. 872,688, filed November 3,1928. This application filed December 28, 1924. Serial No. 758,534,

5 and 6 are in threaded engagement. at 12 and are thereby made easily separable for inspection, cleansing, or replacements of the internal .parts of the device.-

[me casing portion .6 is; provided at 15 AND ONE-FOURTH TO FRANCES SETTEBOTH 0F MILWAUKEE, WIS- v with a boss within-Which there is a bearing opening '16 for the valve stem 17 Con:

centrically disposed with reference to opening 16 is a frusto-conically formed valve seat 18 arranged to receive the valve body 20 which is connected with stem 17 in a manner hereinafter to be more particularly set forth. It will be noted that the spring 11' has an extension which contacts directly with the inner face of valve body 20 andpreferably comprises a compression spring, whereby to urge the valve body in the direction of the seat. One end of the spring will preferably conform in diameter substantially to the interior chamber of easing portion 5 inorder that spring 11 may be confined again-st lateral displacement. Since the valve body 20-is of less diameter than 'the chamber within which the spring is disposed, the springis preferably tapered as indicated.

Theca'sin'g portion 6 preferably includes,

integrallycast therewith, a segment element 21 apertured at 22 and provided with a stop at 23'. Casing portion 6 is also provided with an ear 24 which carries a transverse pivot in 25. B means of the pivot pin an actuating lever is 'fulcrumed in connection with ear24. This lever is designated in its entirety by reference character 26 and may comprise a piece of channel'iron -of.which 27 represents the web and 28 one of the" flanges. The flanges embrace and protect the valve stem, rendering it inaccessible and securing it against unauthorized operation when the lever is locked as hereinafter described. It will be noted that a portion of the web 27 is cut away" at 29 to receive ear 24, and it will be understood that the flanges 26 may be apertured for bearing upon the pivot pin 25. The web is also provided with an opening at 30 which may conveniently beformed by cutting away a portion of the material of the web upon three sides of the openin and bending such material to the arcuate orm in' which it is" illustrated at 31, thereby providing iniernally of lever 26 a cylindrically curved surface adapted to abut the end of stem 17 for the actuation ogf, the valve, i

For th'e purpose of maintainingthe valve in either its open or closed positions, the opening 22 inthe segment portion 21 of-the casin ma be utilizfegi to receive and support a padlock 32 in the manner indicated.

If the padlock is inserted in said opening...

uch a position. esto mai11tain the;valve.

open. The, material of i which the valve casing portions andfiimay becast will preferably be some hard metal suchas iron, steel, brass or bronze, Thus, the; valve seat 18 is very hard. The.valve stem..17 will preferably be constructed, Of'sofile. similarly hard metal,

-- prefierably brass,'. whereby very slight wear can. occur betweenthe valve stem 17 and the bearing opening 16, in thecasi-ng It is :desired, however, that the valvehead \Or body 20, shall beconstructed 1013, some. relatively very; soft metal, thereby ensuringap'erfect seat against the, casing.

A dlfiicillty heretofore encountered .in. at, tempts to use soft metal plugs has been the oxidation orccorrosion offthe valve plug. some alloys. and unalloyed metals will bemeA corroded. as to be, :pcrous .andlesky afterreiatively. short periods of use.v It has eenfound, how-ever thatif the valve plug Qi-Smade of ametal comprising threeparts lead and. .oneipart.-,tiniveiy good. results can e=0htained.., Sn'chi awvalveifplug. will not corrode in ordinary usage with linseed oil, asoline, alcohol, orfiuids. of. a similar .nature, Themdicated proportions may have- 'riedlwithinifainly wide limits, and hencethe preferable proportions stated .may be cons dered as approximate.

Byr-using; .a softnnietal :plug, the valve is thereb 1 adopted 1 and fitted for use in how tiling 'ojiidswhich containiforeign matter, such asmightinterfiere withthe 0' eration of an ordinary ,valveand prevent th constructed of they msterialsiabove indicated have demonstrated that an article as large as the head of a 'pin' can .be inserted between the valve and its seat and will initially hold 1 the valve open. If spring-.11 is relatively strong, the sudden release of handle lever e valve frees closing. Experiments with a valve 26, after the operator is aware that the valve is being held open, will imbed an article of thesiz e f the head of, a pin deeply in the soft. metal plug, 20 to such in-extent. as to permit the valve to close to a perfect seat.

The most serious difliculty heretofore en; countered inthe use ofsoft heads or plugs has been that if the plug is sufficiently soft toserve the purposes of this invention. it will become loosened on its stem through impact withcthe, valve seat The. impact de forms the'soft metal to such an extent that threads, nuts, or other securing devices, on the stem cannot be dependedupon for a, se cur-sand leak-proof connection.

To overcome this serious difiiculty 1. pre fer to, bondthe plugand stem witlr-tinior soft solder. This may be-done in a variety of ways, but thepreferredmethod of as: sembling the hard stem and soft. plugtim volves the casting of the'plug about. and upon the stem The stem is preferably:

tinned preparatory to the casting operation I havefound that the bonded oint results i in the production, of a substantially integral connection of such a. nature thatiit does not' become loosened underimpact. The rigidity of-the connection may be enhanoedby. the extent to which sleeve, portion 35 Oflthfi plug:

is extended alongthe stem.

The only reasonwhy it is preferred to. bond the plug upon the stem by casting-it thereon lies in the.fact that the melting point of the preferred alloy composition for the plug is so close Ito that of the solder used as to tend to-sbftcn the plug if the.

latter is precast'and is subjected toheat suificient tofiuxthe solder.

'In operation, the threadedvportion 9 of the valve casing. will be inserted in a corresponding aperturein. the receptacle or conduitvthrough whichit is desired to regulate liquid flow. The valve plug 20 will be urged to. its seat by a relatively strong spring 11 and will'thereby control fiuid .flow between the. inletport 7 and th outlet port 8 of the device. When desired, the handle lever .26

may benianipu'lated to open the valve and permitfthe flow of fluid-therethrough. The handle lever is sowarranged as to act with considerable leverage upon the-valve stem and friction is minimized through the provision ot the arcuately formed bearingelemerit 31 upon the handle lever. As heretofore explamed, the handle lever may be secured-to maintain the valve in either its open or closed vpositions through the use of padlock 32.4

When he valveplug 20 is axially ofl'set from seat 18 thro'uh the manipulation of lever-26, the fluid owthrough the valve will be comparatively unobstructed. The outlet ort 8' is of a size entirel adequateto ban 9 such flow andthere wi 1 be little if any, back pressure tending to ,liorce fluid extent will ordinarily prevent the emission ed from closing b of fluid therethrough despite the absence of packing.

As above indicated, this valve is well adapted for handling fluids containing for eign matter. The fact that the valve plug 20 is of soft material ensures that the valve will close to a perfect seat, such as will prevent the pa'ssage of light liquids like gasolene or ether, which might escape throu h a valve plug made of brass or the like. t the same time, the plug 20, being of metal, will not deteriorate to so great an extent as would a plug made of rubber or the like, which would become unusable under like circumstances. -At the, same time, .even though the'valve plug 20 is soft and has a tendency to pick up any grit or foreign matter in the fluid controlled by it, it is nevertheless, a fact that with a relatively strong spring at 11 the valve will not be preventany gritty material or foreign matter ad ering to its face. If it is apparent to the operator that the plug 20 is not entirely. closedhe may, by the quick release, or snapping, the valve lever 26, readily imbed the foreign matter within the face of the valve plug to such an extent that it will. no longer interfere. In time, a valve plug having lar e quantities of foreign'matter imbedded t erein may become unsuitable for further use. In that event it will be particularly observed that it is only necessary to replace the valve lug and valve stem. The-new valve plug, being of soft metal, will readily adapt itself'to the seat and there are no further parts necessary for the mounting of the valve or the operative connection of the valve spring therewith. For such replacement it is only necessary to unscrew valve casing portion 6 from casing portion 5 and withdraw the valve from its seat. The spring 11 will remain within valve casing portion 5. A new valve plug and stem'are simply substituted within casing portion 6 and the casing castings are reassembled, subjecting spring 11 to compression as portion 6 is threaded into portion 5. Immediately upon completion of this simple operation the valve device is again in condition for use.

I claim: a I 1. In a device of .the character described,

the .combination with a relatively hard 2. A valve device comprising a casing having an annular seat in combination with a stem of hard metal guided for axial reciprocation with reference to said seat, tin- .ning on the end of said stem, and a soft metal plug comprising an alloy of lead and tin cast uponsaid stem in integrally bonded relation to the tinned portion thereof and formed to be complementary to said seat, the metal of said plug being substantially non-corrodible when subjected to the liquids recited in the specification.

3. A valve device including a casing provided with an annular seat and with inlet and outlet portions upon either side of said seat, a valve stem reciprocably guided in the outlet portion of saidcasing and insubstantially axial alignment'with said seat, a

"alve spring disposed inthe inlet portion of said casing, a valve plug of soft metal alloy in direct bonded relation to, said stem and 'acted upon by said spring, said plug being dependent upon said stain for its guidance 1n movement to and from said seat and being of suflicient softness with reference to the compression of said spring to maintain operatively sealed contact with said seat irrespective of foreign matter which may be interposedinthe form of grit between said valve and said seat as said valve moves towardlsaid seat. 1

4:. A valve device including a valve casing providing a valve seat and a bearing aperture in axial alignment therewith, a brass valve stem reciprocable in .saidaperture, a valve body composed of an alloy of approximately three parts of lead and one part of fan and providing a recess for said softness ofthe plug to maintain s'ai'd plug normally in operatively sealed contact with the seat irrespective of foreign matter which may be interposed in the "form of gut between the plug and the seat as the plug moves toward said seat. i

6. A valve device comprising the combination of a casing rovided with an annular seat, a valve inclu ing a valve plug of soft metal'alloy i'n bonded relation to the stem and complementary to the seat, and a spring acting in a direction tomaintain said plug upon said seat, said spring-being of suflicient strength with reference to the softness of the Plug nils 'd P g normally in, operatively sealed {contact with theseat irrespective of foreign matter which may be 'interposed. in the'form of grit between the;

pin :and ther seat as: the plug: moves toward sai seats i 7 A- valve' device-including the combina: tion ofa casing provided with an annular seatt-a valve stem1guided for reciprocation in substantially axial. alignment with the seat, a valve plug of: soft metal alloy in bonded relation to the stem andv complementary to the seat, and a spring acting in 10 a direction to maintain said plug upon said seat, said spring being ofisufficient strength with reference to the softness of the plug to maintain said I plug normally in operatively sealed contact with the seat irrespective of =-foreignmatter which may be interposed in the form of grit-between the plug and the seatas said plugmovestowa-rdsaid seat.

8.11: a device of'thecharacter described, the combination with a valve casing-and a valve stem reciprocably projecting there-- from, ofa channel lever= embracing the end ofsaid f-stem and -pivotallyconnected with said casing, and a limiting member connected with said casing and provided with means for-limiting the oscillation of said leveraway from said casing, said member being adapted to support the bail of-a pail andto receive such bailwhen the lever is oscillated toward. the casingfrom its extreme'positiovn;

9. In a device of the character= described, the combination with a valve comprising a casing and a stem reciprocably projectingtherefrom, of a lever of channeled section inpivotal=connection-with the casing, em-

bracing-the end 'of said stem, and provided with a slot, a segment connected with said casing and projecting through said slot,- andsaid lever in protective relation to the end of said stem.

10 Ina device ofthe' character described,

the combination with a casing having a valved port and provided with an externally projecting segment,- of a valve controlling said portand provided with a stem reciprocably mounted inthe casing and pro jecting therefrom substantially parallel with said segment, and a lever in pivotal connection with the casing and provided with an opening encompassing said segment, material struck from said opening being arcuately bent .to comprise a contact member disposed to abut the end of said stem.

11. In a device of the character described, 'the combination with a casing providing an internal port, of a valve arranged to seat about the margins of said port to control fluid delivery thereto, a compression spring confined within said casing and abutting the "face of said valve, whereby to urge the valve with said valve and reeiprocably mounted in said casing to project. therefrom, a segment connected with said casingadjacent said stem, and-a valve lever pivotally connected with said casing and including a sheet metal web havingaportion a-rcuately bent to comprise a bearing member for contact-with said stem, the opening left by the portion so bent being adapted: to receive said segment.

12.; A valve: device'including the combination-of a casing.- provided-with an'annular seat, a valve stem guided for reciprocation in substantially axial alignmentwith the seat, a valve plug-of soft metal alloy in bonded relation to the stem and complementary to the seat, and aspring acting directly upon said plug in a direction to maintain the plug upon the seat; said spring being-of suflicient strength with'reference to the softnessof the plug to'maintain said plug normally in operatively sealed contact will the seat irrespective offoreign matter which may be interposed in the form of grit between the=plug and the seat as said plug moves toward saidseat.

13.- A valve device/comprising thecombination of'a casing, a-valve-includi nga plugof soft metal alloy in saidcasing, a seat in said casing for said -valve ,-means-guidin-g said plug for movementto'an'd'from said seat, and'a spring'acting in a-=direction to maintain said plug on said seat "andbeing of sufii'rient strength witlrreference to the softness of-theplug to-maintain the plug normally in operatively sealed contact with the seat irrespective of interposed grit, said seat being formed substantially to snugly house the plug of soft metal alloy; and'thereby resistin'g any tendency of the soft metal to spreadunder the pressure of said spring.

14; A valve device comprising the combination of a casing provided with a'ta cred seat, of a-valve'includinga plug 0 soft metal alloy" complementary to: said seat, means guiding said'plug for movement to and from said seat,-and' a 'spring'acting in the direction 'tomaintain' said "plug on said seat and being of sufiicient strength with reference to the softness of the plug to maintain said plug normally inope'ratively sealed contact with the seatirre'spective of interposed grit, the tapered form'o'f saidseat and plug being adapted to resist any tendency for the soft metal of said plug to spread under the pressure of said spring.-

15. A valve device comprising the combination of a casing provided with a tapered seat having'a smooth frusto-conical surface, of a valve operative within said casing and comprising a suitable guided stem and a valve plug of soft metal alloy directly bonded to said stem and complementary to said seat, and a spring acting on said plug in a direction to maintain it normallyin' oper- 16. A valve device comprislng the combination with a casing provided with a c'onically tapered seat and having inlet and outlet ports-upon either side thereof, of a valve stem guided for reciprocation in substantially axial alignment with said seat and projecting from the smaller side of said seat toward the outlet side of said valve casing, a valve plug of soft metal alloy complementary to said seat and directly bonded to said stem, and a spring in said casingon the inlet side of said port acting directly upon said plug whereby to tend to maintain the soft metal of said plug in intimate symmetrical relation to said stem under the increasing resistance of the tapering seat.

17. In a valve device, the combination of a stem of relatively hard metal, and a valve plug of a lead-tin alloy directly bonded to said stem, whereby to form an integral structure without the use of mechanical means for securing together the plug and stem, said alloy consisting of approximately three parts of lead and one part of tin.

. FRIEDERIGK SETTE.

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