US938080A - Valve. - Google Patents

Description

' F. SGHRBIDT.

I VALVE.

APPLIoATIoN HLnn 23.5.1909,

Patented 0013.26, 1 909.

To all whom. 'it may concern:

UNITED.g sTATEs PATENT OFFICE.

:FRANK SCHBEIDT, 0F IIANSFIELD, OHIO.

VALVE.

. specification at Leners man1...

Patented Oct. 1909.

Application lied April 5, 1909. Serial No. 487,949.

' Be it known that I, FRANK. SCHREIDT, a citizen of the United States bf America, Aresiding at Mansfield, in the county of Richland and State of Ohio, have invented certain new and-useful Improvements in Valves,

of which the following is a specification.

My invention relates to improvements in valves andis'especially designed to be used with the valve shown and described in Letters Patent granted to me May 4, 1909, (valve) No. 920,187.

One of the objectsvof my improvement is to provide one or more joint members which will all coperate to prevent leakage past the valve stem for the purpose of obviatin the necessityy of using the ordinary sqft pac ng. A further object is tov provide means of automatically taking u the wear of the parts comprising the jointl members for the purpose of keep g them constantly in close contact with each other. y j

A further object is to provide means of adjusting the-parts.. to contactA with each other u nder a pre-determined pressure and' locking said parts in their adjusted position. The primary objects of my improvements are to provide means-of automatically packing the .valve stem to admit of the constaiut operating or rotation of the valve stem in o ening and closin the main valve and W ich will take up a the wear of the parts automatically thereby obviating the necessity of re acking the valve stem and provide a'sel- -packing valve stem.v

I attain these and other objects by the #mechanism illustrated in the accompanying drawing, in which:

Figure 1 1s a vertical sectional side elevation of a' valve and its parts showing my im- V provements applied thereto. Figs. 2 and 3 v. -areend and s1 views respectively, of th spring and valve -stem ,older. 6 and 7 are end" and side vlews, ctlve' of a socket member.

In the wings, reference ligure 1 represents the inlet and figure 2 the outletof the mg tubulargzportion. .8 havingan inwardly y e views, r pectively, of the valve stern. Figs. 4 and E535 are end and side extending annular member 9. A valveseat 10 is formed on the member 9.

A valve stem comprising two parts l1 and- 7 12 is provided. The'part 12 carries a main valve 13 and a stop lvalve 14. The part 11 of the valve stem is vprovided with lan inopen position and prevents further rotation o the valve stem in the direction of opening the main valve. The stop valve 14- performs two functions in that it prevents the the first instance and prevents the further rotation of the valve stem "jafter the main valve has reached its' full open position. The bonnet 6 is provided with an upwardly extending elongated tubular portion 19 hav-v ing an inwardlyextending annular portion 20 formedon its inner periphery with an upper beveled portion anda lower'i'lat. portion which provides two faces to contact with joint Amembers which will be described hereinafter.A

The upper portion of the valve stem 11 passes through an aperture in the central portion of the annular ortion 20 and extends upwardly beyond t e end of the. tubular ortipn 1 9 'of 4the. bonnet. -A soft doub e beveled 'faced ring member 2,1 is

teriorly threaded socket portion 15, an uppersteam from leaking past the valve stem in fitted to the part 11 of the valve stem and one face thereof is adapted to contact with the inwardly extending portion 20 of the bonnet. material than other partsof the joint memvber of the valve stem. A ring valve stem and its beveled face is adapted to 'Contact with the upper beveled' face of the soft double faced ring member. AV tubular The member 21 is'made of softeror socket member 23 is provided with the end adapted to fit within the inner periphery of the tubular member 19v and is providedv with 'an annular ribmember `24 Vwhich is adapted to contact with the flat surface of the 22.'

The upper portiong16 ofthe valvefsteln isVV 100 22 of hard .material is also 'fitted to the part 11 of the and valve stem fitted to the rectangular aperture 25 formed 29 of the tubular member 2,3 and has an.

aperture formed vthrough the center. The upper portion of the handle 17 Yis depressed leaving a space 30. The handle 28 is fastened to the upper member by the lugs 31 and 32 of the socket member 23 which engage with grooves formed in the handle. (N ot shown).

The spring 27 is what is open helical spring 'and is interposed between the inner periphery of the opening formed in therhandle 28 and the outer periphery pf the reduced portion of the spring holder 26. The part 11 of the valve stem is held in place by the holder 26 which is screwed down on the threaded portion of the end 17 of thevpart 11 of the valve stem, closing the'. coils of the spring 27 until the pre-determined tension is obtained for keeping'the joint members in con- .tact with each other.'

cording to the tension This draws the joint member 33 against and in contact under tension with the flat surface 34 of the annular inwardly extending portion 2O and the'soft double beveledfaced annular ring 21 is at the same time .forced in contact with the beveled face 35 and the annular ring 22 is forced in Contact with the upper beveled portion 36 of the double beveled faced annularring 21.

The spring isfcompressed more or less acdesired forcing all of the joint members in close contact with each other underv a pre-determined pressure and as the handle 28 is rotated for the purpose of opening or closingthe main valve, the wear of the parts forming the joint members is automatically taken up bythe tension of the spring. v

In order to lock the spring and valve stem holder in position after adjustment, I provide -a screw 37 which engages with a screwthreaded aperture 38 formed in the endof part '11 of the valve stem.- When the screw 37 is screwed down in place, it securely locks the spring and valve stem` holder in place as the pitch of the screw 37 is different than the pitch of the end 17 which the valve stem and spring holder 26.

It will be noted that the leakage of steam j' or other fluid past the stem is prevented by a series of jointmembers coperatlng together to obtain the-same result. All of the Wear packing the valve stem and spring holder 26. l Thev The lower portion of portion 29 of the socket4 designated an two parts, one

.rial than -to the valve stem and adapted-to contact engages .with

. cured of the contacting surfaces of the joint'members is automatically taken up by the spring 27 thereby obviating the necessity of revalve stem. The soft ring or joint member 21 provides a means that readily accommodates itself to the wear of the contacting surfaces and forms a close contact or packing around the stem.

Having fully described my invention, what 'I claim and desire to secure by Letters Patent is: l y

1. A paekless valve comprising abody portion with a valve seat formed in the lower portion thereof, a bonnet secured to said body portion Fhaving a valve seat formed withinthe inner periphery, a valve adapted to contact therewith, a two-part valve stem, one of said parts secured to said bonnet by. twin joints both of which are adapted to prevent leakage past the stem, said part being 85 provided also with a threaded end portion, a

spring and valve stem holder threadably connected to said end, a spring held bysaid spring holder and ada ted to exert a pre-determined pressure on the valve stemand' the twin joint members thereof to hold them in close contact undera pre-determined pressure.

2. A valve stem comprising a body portion with an inlet and outlet aperture, a valve seat formed in the lower portion of the body,

a bonnet secured to said valve and provided' with a valve seat, a Valve stem composed of of said parts mounted in the bonnet and movably secured thereto by two ground joint members and the other part threadably connected to the part mounted in the bonnet, one of said joint members being a loose memberv formed of softer materia than the other joint member, a socket member secured to the upper ortion of the bonnet, -a s ring, a sprin an valve stem holder adapte vto retain sai spring and one part of the valve stem in place and hold the joint ioo members in close contact with each other as 11o and for the purpose described. l 3. A valve comprising a body portion-with an inlet .and out et aperture, an elongated bonnet secured thereto, a valve stem composed of two parts and threadably connected together, twin joint members formed in the bonnet, a loose joint member of softer matethe other parts of the joints fitted with the seats of the joints, a ring of harder material adapted lto contact with the upper face of said loose .joint member, a socket l tted to the inner periphery of the bonnet, a

spring mounted on said socket member, a v

stem holder threadably se- 4 and valve to the end of the stem' to hold said spring and one part of the valve stem, a locking screw threadably connected to a threaded aperture in the end of the stem and adapted to prevent the spring and valve 130 spring CIT valve stem threadably connected, the upperl portion of said valve stem having a threaded interior, a socket member fitted to the bonnet, a handle secured thereto having an aperture in the center, a valve ystem' and spring holder, a spring retained in place by said valve holder, said spring and valve stem holder bein adapted to hold the valve stem in place un er a pre-determined pressure.

5. A valve comprising a body portion with an inlet and outlet aperture, a bonnet threadably connected to the body having -a valve interior, a socket member tted to the bon-f,

net, a handle secured thereto having an aperture in the center, a valve stem and spring holder, a spring retained in place by said valve holder, 4said spring and valve stem holder being adapt-ed to hold the valve stem in place under a pre-determined pressure, and means to lock said spring and valve stem holder in place. v

'In testimony whereof I aHXI my signature in presence of two witnesses.

FRANK SCHREIDT. Witnesses:

' JOHN H. Goss, FRANCIS YUNCKER.

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