US1641892A - Valve - Google Patents

Description

A Y .6 i gn el) 6 1927 F'zT. LANE VALVE Filed Maron 5. 1926 N ENTOR 'ed TLa-zze Patented Sept. 6, 1927. Y

l. UNITED STATES man r. LANE, or aroma, wAsnIN'e'roN. i

vaLvn application med umn 5, :1926. serial no. 92,550.'

My invention relates generally to improvements in valves and more particularly to improvements in valves of that class to which safety valves belong, and it consists 1n the combinations, constructions and arrangements herein described and claimed.

' An object of the invention is the/provision of a valve of the character described which.

is adapted to open automatically when the pressure at the inlet of the valve reaches a. predetermined pressure, which may var at will within a considerable range, and w lch includes a valve `which will be held .against its seat when the pressure at the inlet is lower than said predetermined pressure without the use of the usual weights for preventing opening of the valve at a pressure lower `than said predetermined pressure.

vA further object of the invention is the.

V provision of a valve of the character described which includes manually operable means for openingthe valve when desired.

lA still further object of the invention is the provision of 'a valve of the character described having ieldablemeans functioning .to hold the va ve :closed and having also means for adjusting said yieldable valve clos ing means so that the valve will open at any predetermined pressure within a considerable range, the invention also contemplating Y e provlsion of indicating means adapted to be actuated. by the adjusting means for indicating on an associated sca e the particular pressure at which the valve will open at a given time.

Other ob'ects and advantages of the invention wil be apparent from the following description, cons1 er'ed in conjunction with the accompanying drawings,- -in which- Figure 1 is a' side elevation ofthe improved valve.

Figure 2,is`. a vertical section through the improved valve,- 4the view being .at right angles to Figure 1,

liliV Figure 3 is a horizontal section substanfor a short dis-- enlargement 3 and this shoulder 4 is margined at its inner edge by an upwardly extending tapering circular rib or ridge 5. The bod 1 also is reduced internally below the shou der 4 at 6, thus producing a downwardly facing shoulder 7 against which a screen 8 is disposed and secured in place in any suitable known manner. The ylower end portion of the body 1 is provided below the shoulder 7 with internal screw threads for engagement at 9 with a supply pipe 10 for conducting fluid pressure to the valve casing. The lower end portionpf the body 1 below the shoulder 4 therefore constitutes an inlet and the upwardl extending ridge 5 is a valve seat, as wil presently appear. The portion of thebore of the body 1 above the enlargement 3 is circular in cross section. .The casing of the body also includes a tubu lar head section 11 having an externall reduced lower end portion 12 which Is -in threaded engagement at 13 with the upper end portion of the body section 1 of the valve casing. The upper end portion of the bore of the head sectiony 11 is enlar ed internally at 14 for the reception of pac ing rings 15 which `may be compressed against the bottom of the enlarged portion 14 by a follower 16. Pressure is exerted on the follower 16 by a screw cap 17 which is screwed onto the upper end portion of the head section 11 of the valve casin A gasket 18 may be disposed on the re uced lower end ortion 12 of the head of the e valve casing etween 'the upper end ofthe body section 1 and the adjacent portion of the head section 11.

A valve block 19 of circular cross sectional` configuration is -provided for controlling` into the internally enlarged ortion 3 of the valvelcasing. The valve bloc 19 has a body made of relativel 'hard metal, -such as tool a socket 2O in its lower steel, formed wit face of greater diameter than the diameter ofthe outer wall. of the valve seat 5. This socket 20 is filled with a softer metal`-such aslbabbit, as indicated at 21, level with the lower face of the valve block body, whereb the lower or ycontact face ofthe valve' bloc '19 will be flat.- The upper edge of the valve ing when the valve block 19 is held iirmly in lace on the valve seat 5.

he valve block 19 also is formed with a socket 22 in its u per end for the reception of the lower en portion of a relatively heavy and strong expansion spring 23, the upper end portion of which bears against an `adapted disk which is disposed between the flat lower face of the enlarged lower end portion 2410i a valve stem 25 and the upper end of the spring. The upper end portion of the spring encircles a central retained pro-A 'ection 51 on the lower face of the disk 50.

he stein 25 extends through the head section 11 of the valve casing and is provided above the enlargement 24 with external screw threads 26 rlor engaging with internal screw threads 27 on the internally reduced lower end portion 12 of the head section l1.

A lifter sleeve 28 is sliclably and rotatably disposed in the bore of the body section 1 of the valve casing above the level of the lower or bottom wall of the enlargement 3 of the bore vof the body section of the valve casing and above the level of the bottom wall of the valve block 19. The upper end portion of the lifter sleeve 28 is secured to the enlarged lower end portion 24 of the valve stem by a cross pin 29. The lifter sleeve 28 carries a pair of inwardly extending diametrically opposite projections 30 which may be the Shanks of set screws 31 which screw in the threaded openings in the lifter sleeve. The projections 30 extend into a circumferentiall extending groove 32 inthe outer wall of t e lifter sleeve 28 and the diameter of each of the projections 30 is -considerably less than the width of the groove 32. The rtion of the lifter sleeve which de `nds be ow the level of the u per wall of t e internal enlargement 3 o ithe body section 1 of the valve casing may be formed-with a plurality of circumferentially s aced radia apertures 33.

e valve stein 25 extends through the rings 15, the. follower 16 and t oug a central opening in the crown portion of the-cap 17 above the level of the latter. A collar 34 is removably and adjustably secured in lace on the valve stem 25 above the cap 17 y means of a set screw 35. The collar 34 carries an indicator arm or' pointer 36 which as best seen in Figure 2 and is of suicient length to terminate at its lower end close to the face of a strip 37 which is secured by screws 38 to the-ufppr Aend portion of the body section 1 o valve casing. The' strip 37 has a scale.39 produced thereon, the. graduations ofwhich are marked 'to indicate in pounds dierent p at which the, valve block 19 will move upwardly fromits seat and/from posil tion to cover the inletof the valve The p which will besulcient to force `the valve block 19 upwardly from Lacasse against the action of the spring 23 of course will vary accordin to the extent of compression of the spring 23 by the valve lstem 25 various parts of the device, the operati-on` thereof ma be readily understood. The screen 8 will revent passage of particles of dirt and li e matter wit the pressure fluid against the bottom of the valve block 19 and thus will prevent any such particles from lodging between the contact face of the valve block 19 and the valve seat 5. The collar 34 is secured in place on the valve stem so that the indicator or inter 36 will point to 0 on the scale strip 3 p when the spi-ing 23 is fulry. expanded or uncompressed position. stein 25 in a clockwise direction then will cause compression of the spring 23 against the valve block and the indicator 36 will move simultaneously along the scale strip rning of the valve4 37 and will at any given time indicate in4 lifter sleeve 28 will turn with the valve stem and the projections 30 will move downwardly toward the bottom of the groove 32 as the valve stem is turned in the direction vre quired to com rees thev spring 23. The valve block 19 oes not rotate, however, but remains frml in tplace against the valve seat as a res t of e action of the sp 23 until the pressure against the valve 19 is sufficient to cause the latter to move upwardly from its seat against the action o the spring 23. In the event that' it is desired to com rees the spring 23 to an4 extent greater an would be possible with the particular pressure transmitting .ada

er disk 50 shown in the drawin and particular groove 32 and the prolections 30 shownin drawing a similar pressure transmitting adapter dislr50 of ter thickness may be substituted for e particular sisted before` the substitution fof the relatively thick adapter disk for the ada rdiskshowninthednwmg lll f Viiiatimimmanimmun' aresultofmanuelectiun, velvesteml rstvrelieving the spring 23 of compression and then causing t e projections to env gage with the upper wall of the groove 32 and to then lift the valve block 19 upward- 1y from its seat. The valve block thus can be held from its seat when desired and as soon as the stem 25 has. been turned in a `clockwise direction as required to compress j will circulate about the lower end portion of the lifter sleeve 28 and the .lower end` portion of the valve block and will' keep the adjacent surfaces of such arts clean, some of the pressure, fluid passing through the apertures 33 in the lower end portion of the lifter sleeve as soon as the valve block 19v has been moved outwardly below the level of the lower portions of the apertures 33. The upper end portion of the valve casing ma be termed a stuing'box.

Obvious y, my invention is susceptible of,

embodiment in forms other than that i11ustrated in the accompanying drawings and I therefore consider as my -own all such modifications and adaptations of the form of th'e device herein describedas fairly fall within the scope of the appended claim. K

ortion 3 of the valve cas-y A valve comdprising a casing having an inlet at one. 'en and K aving a lateral outlet adjacent to said inlet, said valve casing being formed to produce an inwardly extending valve seat at the inner end of the inlet, a valve block slidable in the valve casing to and from position to bear against said valve seat and'to then close said inlet, a valve stem 'extending from the opposite end. of said valvev casing and having a portion in threaded engagement with the adjacent end portion of the valve Casin the inner end portion of said valve stem enlarged, a thrust im arting adapter dlirsk movable within the va ve casing and being disposed against the inner end of said valve stem, an expansion spring between said `adapter disk and said valve block, a lifter sleeve disposed within said valve casing in' encircling relation to said valve block, said lifter sleeve being capable of axial and rotary movement in the valve casing, means connecting the up er end portion of said lifter sleeve with t e valve stem, said valve block having a circumferentially extending groove in its outer face, and a projectionl carried by saidI lifter sleeve and extendin"C4 into said groove, the end portion of sai lifter sleeve nearesty to` said inlet havin radial apertures for the circulation of Hui therethrou h when said' valve block has been move its seat.

FRED fr. LANE.

in/ the lifter sleeve away `from

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