US1777580A - End train-pipe valve - Google Patents

Description

Oct. 7,'1930. E. A. RUSSELL 1,777,580

A END TRAIN PIPE VALVE Filed April 1o, 1929 2 sheets-sneer 1 Oc't. 7, 1930. E. A. RUSSELL END TRAIN PIPE VALVE Filed April 1o, 1929 2 Sheets-Sheet 2 `Patented Oct. 7, 191i()N minieme nnwnnn A. RUSSELL, orloHicAGo, rLiLmorsassronoaro varon GRiiEA'riNG ,oom-ll l 'rAnY, ino., or CHICAGO, iLLiNors, A conromirroiv or new Yonx y END' TRAIN-PIPE vALvEf jf y i application mea Apri; 1o,

rhis invention relates to improvements in end 'train pipe valves forpsteam car-.heating systems,` f f 1. f `Systems of car-heating using steamfgroin .I the engine are constructed `with a` train line or main supply pipe extending from the boiler he ad'in the engine cabto the rear` ofthe train.

` This train line is connected by .steam couplers betweenthe cars and is provided with branch `.'-teain connections' tothe heating pipesrin eachoar. Each end "of the train pipe on eaohvcaris provided with an end 5 train pipe valve, these valves at'the adjacent endsof two` cars beingnorinally open when these cars are included in a train andthe steamA couplings are `in place and operatively M connected. Only the end train `pipe'valve at the4 rear end of the train will be closed. As the entire train line :and connectionsare exposed to the weather, it follows that this pipe system contains considerable condensa'v tion. rihis condensation, if it isnot-allowed to discharge approximately as fast 'asit collects, will quickly freeze up and causer/ery serious trouble in cold Weather. However,

" if the steam pressure is maintained on the train pipe valve allowed to bleeda littleV train line all the way to the rear and therear steam through the rear hose connection, that is allow a `small stream offsteain to continuously escape, this `common trouble will loe` avoided. f

The object of the present invention is to provide animproved form of end .train pipe valve adapted to satisfactorily perform-the functions `noted hereinabove, and disclosed more in. detail in the specifications which follow.

Another object is to provide an improved `form ofv `valve opening and-closing mechanism, adapted to exert a. powerful leverage for breaking the valve from its seat,`but coinpact and requiring comparatively little room the valve, when in open position.

1929. serial No. 354,1?1

In the accompanying drawings:V

Fig. 1 is acentral verticalfsection through Fig. 2 is asimilar viewshowing closed. 4 i

Fig. 3 isa transverse.sectiontalien substan-` y tially on thev` line 8f3 of; Fig. 1. Fig-4 is atransversesection taken-sub` stantially` on the line e-4 o'fFig. 2.

Fig; 5 isa perspectrve view of the main portionsof the valve operating mechanism, and

Fig.` 6 vis alperspective view of the `assenry bled valve andvalve-lifting lever.V

Referring `now to the drawings, at

the `valve `l `is f shown the lend ofthe train steam pipe, sup-- ported inthe usual inann'er'beneathV the fear.;`

The main casing 2 of the endtraingpipe valve is formed at the rear thereof with a pipe eXf tension 3 formingin effect an 'extension'of the train `pipe 1. `This'extension?) is provided at its open rear endwith'an integral -collaTJ 4, and a somewhat similar vcollar 5 is formed onor attached-tothe endfofgtrain'pipe 1. An. i Y

annular sealingiiange 6 extends from the i end of collar and is adapted to engage with.`

in a corresponding annular groove formed in the end of collar VILi,the-.beveled end of flange G'engaging a packing ring or gasketZ-seated in the bottomof this groove. The collars 4 and 5 are preferably rectangular or of othernon-circular outline,` and the collars are secured together 'by a plurality of threaded bolts 8. By 'screwing up the nuts on these bolts 8, the `engaging portions of the collars r will be forced into steam-tight position, the

joint being sealed by the `gasliet 7. The casing 2 has a second downwardly extending eX- tending extension 10, in which ,is threaded theV upper end 11 ofthe coupling through which connection is madewith the adjacent car, or the end of a nipple by means of which this coupling `is attachedto the valve. The

casing 2 houses the main "steam chamber 12,-

into which steam flows through inlet `port 13 in extension 3, and from which steam flows out through outlet port 14 `into the` coupling memloerll.` The main valve seat 15 is screwed or otherwise mounted in the .casing `2 `atithe entrance 0. of condensate'.

` v The valve operating lever 18 is fulcrumed ed to seat against the valve seat 15 andthus vcut off the flow of steam through the valve,

the valve plate being held in place by the steam pressure behind it. A small notch 17 formed in valve seat 15 permits a small quantity of steam' to bleed, through the valve, even though the valve i-s closed, this minute flow of steam being suiiicient to keep thesystem full of steam and permit the discharge at one end on'the pivot pin 19, which has one larger outer end 20 screwed into one wall of casing 2, and its smaller inner end 21 journaled in a lug-22 Vformed inthe opposite wall of the casing.v The lever 18 extends transversely of the-lower portion of chamber 12, directly behind the Vvalve plate 16 and is formed intermediately with acentral slot 23 through' which projects the hingelug 24 onthe back oflvalve plate 16.` A pivot-pin -25 isfmounted-fina pairjof ears 26 on the lever and projects loosely through an opening 27 in the lug 24 of the valve. ',This loose'pivotal connection permits the valve to seat' 'itself freely on the valve seat when the le-H ver -is v'swung downwardly.l `An extension 28 of valveA lug 24 projects outwardly over the outer arm 29 of lever 18' so that when the lever A18 is swung upwardly,

. it will first-'engageithis lugV 28 and tilt the valve plate so as tobreak it away from its seat. It will be noted that the bleeding notch 17 is formeddirectly beneath lug 28 so that the valve will first befbroken from its seat directly above this' bleedingnotch Y through which asmall flow of steam already occurs. This will minimize the effort in breaking loose the valve.A The position ofy notch 17 at the lowermost edge of the valve seat also permits condensate to drain from the valve chamber through this notch.

A rock shaft through chamber 12 aboveth'e valve and is journaled in the opposite side wallsV ofcasing 2. reduced stud 31 on the inner end of rock shaft A is journaled in a bearing 32 formed in one wall of the casing. The other end of shaft 30 extends through andris journaled in a bearing 33 formed in a plug 34 screwed into the opposite side wall of casing 2. A hollow screw threaded extension 35 of member34 extends outwardly so as to'house an'annular gasket or vrpacking member 36,

which surrounds shaft 30. A cap member 37 screwedonto the extension 35 is adapted to force' a'gland38'against the packing 36'so as to forml a steam tight joint about the rock shaft 30. The-outer end 39 of rock shaft 30 is of non-circular form and adapted t0 be attached to any suitable form of leveror link mechanism whereby the rock shaft may be operated from a distance.V i

A crank-arm 40 is either formed on or at- 30 extends transverselyl plugl valve. The free upper end 41 of crank arm 40 is pivotally connected by means of pin v42 within the forked end 43 of an upper link 44. The other forked end 45 of link 44 is pivotally connected by means of pin 46 with the upper end 47 of a lower link 48. The lower forked end 4,9 of link 48 is pivoted by means of pin 50 to the free end 51 of the valve operating lever 18.

A locking lug 52 is formed centrally on the upper vor outer side of the upper link 44. A closure plug 53is screwed into an opening in the top of casing 2. Plug 53 is formed with a cylindrical chamber 54 in which is mov ably mounted a piston55 normally pressed down by a spring 56, which is compressed between piston 55 and the capk member 57, which is screwed on to the plug 53vand closes the upper end of V'chamber 54. A pin or stud 58 having arounded lower end projects downwardly from piston 55 into the path of move` ment of the locking cam or lug 52 on the upperlink 44.

When the valve is closed, the parts will be substantially in the positions shown in Fig. 2. The lever 18 is lowered to such a position that the loosely pivoted valve plate 16 is entirly free to seat itself properly on valve seat 15., 'and the valve is held closed by the steam pressure within the chamber 12. A small How of steam is permitted to bleed through the notch 17. In order to open the valve, the rock shaft 30 is rotated continuously in a clockwise direction, as seen in Figs. 1 and 2. At the beginning of this movement the links 4 4 and 48 will be in alignment, with the link 44. out of. contact with shaft 30 so that the lifting force will be applied to the upper end of link 44 through the crank arm 40. As the crankarm 40 swings through 'its arc above the shaft 30, there will only be a relatively small upward lifting component of this motion applied to the links 44 and 48, so that a very powerful leverage is available for breaking the valve from its seat. The arm 29 of lever 18 will immediately contact with the lug 28 and tilt the valve plate so as to break it loose from its seat at the side above the bleeding notch 17. Directly after this first, and most diflicult part of the valve opening movement has been accomplished, the under side of link 44 will come into contact with. the side of rock shaft 30, whereupon the upper link 44 and rock shaft 30 will turn as a unit so that the lifting force is applied directly to the upper end of the lower link 48 and the valve is rapidly swung upward to the open position shown in Fig. 1f Towards the end of this movement the cam 52 on link 44 will pass under the locking detent i behind` the canfil52A tohold theparts in the openf-positionshown in Figi The valve may be closed by imparting a counter clock wise rotation to the rockshaft 30, thedetent 58 yielding to per-mit the cam 52`to be forced thereunder, after whichthe parts will move of their own weight tothe` closedl position shown in Fig. 2. A

j The parts of this valve are simple, acces-V,

sible and readily assemblediand disassembled;

`The valve operating mechanism is'very coinfV 'pact and `requires only a small valve `hous'` ing to contain thesame and permit the necessary movements otthe operating parts.A This arrangement permits theoperating rock shatt 30ste be placed `closely adjacent the valve,

. and at the same time thernecessary leverages,

are provided for breaking loose the valve and moving it to open orclosed position without unusual el'ort.

I claim:

'1. An end train pipe valve comprising av casingihavinginlet and outlet ports anda chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from i the seat, there being a' lug on theback of the valve,-a lever pivoted at one end linthe cas- `ing and extending transversely behind the valve, means loosely pivoting the lug `to an intermediateportion of the lever, and means mounted `within the casing `and attached to the freerend of the lever for swinging the lever into tlieehamber to litt the valve.

"2. An end trainpipe valve comprising a casing having' inlet and outlet/ports and a chamber therebetween, a valve seat mounted in thecasingaround the outlet port, aval've movable within the chamber toward or from the seat, there being 'a lug on the back of the valve, a lever pivoted at one Vend in the casing and extending transversely behind the valve, means loosely pivoting the lug to an intermediate portion of the lever, mounted within the casing and attached to the free end of the lever `tor'swinging the lever into the chamber to'liftthe valve, the lug having an extension projecting over the lever whereby the initial movement ot `the lever will engage the extension tobreak the valve from its seat.

casing having inlet and outlet ports and a chamber therebetween, a valve seat mounted in thecasing around the outlet port, a Avalve movable within the chamber toward or from the seat, there being a lugon the back ot the valve, `a lever pivoted at one end inthe casing and extending transversely behind the valve, means loosely pivoting the lug to an intermediate portion of the lever, and means mounted within the casing and attached to the free `end of the lever 'for swingingpthe and means.

`the casing around the outlet port, a valve movable within the chamber toward or from L the seat, therebeing a lugon the back ofthe valve, a lever `pivoted at one 'end in the 'cas-'v ,ing and extending transversely behindthe` valve,`means loosely pivotingithe lug to an intermediate portion of the lever,.and means mounted within the casing andattachedi to,` the `free'end ott-he lever for swinging the` lever into the chamber to vlifttlie valve, the lug. havingV an extension projecting over the lever whereby the initial movement of the lever will engage the extension to break theV valve from itsseat, there being ableeding l notch inthe valve seat on 4the side thereof beneaththe lug extension.

` 5. An 'end train pipe valve comprising a casing having linlet and outlet ports anda chamber therebetween, a valve seatmounted in thecasing around the outlet port, a valve movable within the chamber` toward or 'from the seat, there being` a lug on the back of the valve, a lever pivoted at one end inthe casvalve, meanslooselypivoting the lug to an intermediate portion of the lever, and means mounted within the casing `and attached to the tree end of th-e lever for swinging the lever into the chamber'to lift the valve,` the lug having an extension projecting over the free arm of thelever whereby the initial movenient of the lever will 'engage the extension to break the valvei'irom its seat, there being a bleeding notcliin the valve seat on the side thereof beneath the lug extension. Y

6. An end train pipe valve comprising a casing having inlet and outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward orfrom the seat, aplever pivoted at one end in the casing andextending transversely behind-the valve, means loosely pivoting the valve to au intermediate portion of the lever, `aV roclrshaft mounted in the casing, and connections be 3. Aniend trainpipe valve comprising a from the seat, and Y ing and yieldingly engageable with a portion the valve in open casing and extending transversely behind the of the connections to hold position. I' s n, ,Y

8. An end train pipe valve comprising a casing having inlet and outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from the seat, a `lever vpivoted at Vone end in the casing and vextending transversely behind the valve, means loosely pivoting the valve to an intermediate portion of the lever, a rockshaft mounted in the casing and connections between the rockshaft and the free end rof the z levercomprising a crank arm on the shaft, a

link pivoted to the lever, and a link connect# ing theflirst link withithe freeend of the crank arm,the latter link being out of Contact with the shaft when the valve is closed but f engaginggand rocking' with V the shaft after Y the opening movement of the valve has been started. f c

9. An end train pipe valve comprising a casing having inlet and outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from the seat, a lever pivoted at one end in the casing and extending transversely behind the valve, means loosely pivoting the valve to an intermediate portion of the lever, a rockshaft mounted in the casing and connections between the rockshaft and the free end of the llever comprising a crank arm on the shaft,

a link pivoted to the lever, and a link coni necting the first link with the free end of the crank arm, the latterflink being out of contact with the shaft when the Valve is closed but engaging and rocking with the shaft after thev opening movement of the valve has been started, and means mounted in the casing and yieldingly engageable with the last mentioned link to hold-the valve in open position. Y i' .10. An end train pipe Valve comprising a casing having inlet and outlet portsand a chamber therebetween, a valve seat mounted within the casing around the outlet port, a valve movable within the chamber, movable guide means in the chamber for carrying the valve into or out of engagement with the valve seat, a rockshaft mounted in the casing,

Y a crank arm on t-he shaft, and a pair of links pivotally joined together and connecting the crank arm with the guide means, both links being free of the shaft whentheqvalve is closed whereby the initial vopening movement is applied through the crank arm and both links, the outer Alink subsequently moving intoengagement with the shaft as the valve is opened and rocking therewith.

ll. An end train pipe valve comprising a casing having Vinlet and outlet ports and a chamber` therebetween, a valve seat mounted within the casing around the outlet port, a valve movable within the chamber, movable guide means in the chamber for carryingpt'he valve into or out of engagement with the valve seat, a rockshaft mounted in the casing, a crank .arm extending substantially radially from the shaft and adapted to swing through an arc on the side yof the shaft remote from the valve, a pair of links, one end,

of one link being pivotally connected with one end of the other link, the other end of one link being pivotally connected with the free end of the crankarm, and the other end of the second link lbeing pivotally attached to the guiding means, the first mentioned link being yadapted to swing into engagement with the roekshaft and rock therewith after the initial rocking movement of the shaft has broken the valve from its seat.

l2. An end train pipe valve comprising a casing'having inlet and outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve .movable within the chamber toward or from the seat, a lever pivoted at one end 1n the casing and extending transversely of the valve and intermediately pivoted loosely to the valve, la roekshaft pivoted within the casing, a crank arm extending radially from the shaft and adapted to swing through an arc on the side' of the shaft remote from the valve, a pair of links, one endV of one link being pivotally connected to one end of the other link, the other end of one link being pivoted to the free end of the crank arm, and the other end of the second link being pivotally attached to the free end of the lever, the first mentiond link beingadapted to swing into engagement with the rockshaft after the initial rocking movement of the shaft has broken the vvalve from its seat. i f

13. An end train pipe valve comprising` a casing having inlet and outlet ports and a chamber therebetween, a valve` seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from the seat, a lever pivoted at one end in the casing and extending transversely of the valve and in-termediately pivoted loosely to the valve, a rockshaft pivoted within the casing, a crank arm extending radially from the shaft and adapted to swing through an arc on the side of the shaft remote from the valve,a pair oflinks, one end of vone link being pivotally connected to one end of the other link, the other end of one link being A ci.

"' pivoted to the freeend of the crank arm,

and the other end of the second link being pivotally attached to `the free end of the lever, the rst mentioned link being adapted to move as a unit with the roekshaft and eranka'rm after the initial rocking movementv valve from its ing and extending transversely'of the valveV and intermediately pivoted loosely Vto the valve, a lug on the valve in position to be engaged by a portion of the lever whereby the initial movement `of the lever will tilt the valve to break it from its seat, a roekshaft pivoted within the casing,a `crank arm extending radially from the shaft and adapted to-swing through an are on the side of the shaft remote from the valve, a pair oflinks one end ofl one link being pivotally connected to Vone end ofthevother link, the other end of one link being pivoted to the free end of the crank arm, and the other'end of the second link being pivotally `attached to the free end of the lever, the 4lirst mentioned link being adapted to swing into engagement with the rockshaft after the initial rockinginovement of the shafthas brokenthevalve from its seat.

15. An end train pipe valve comprising a casing having inlet and outlet ports and a chamber therebetween, a.v valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from the seat, a lever pivoted at one end in the casing and extending transverselyfof the valve and intermediately pivoted loosely to the valve, a lug on the valve in position to be engaged by a portion of the lever whereby the initial movement of the lever will tilt the valve to break it from its seat, a rockshaft pivoted within the casing, aora-nk arm ex-V tending radially from the shaft and adapted to swing through an are on the side ofthe shaft remote from the valve, a pair of links, one end of one link being pivotally connected to one end of the other link, the other end of one link being pivoted to the vfree end of the crank arm, and the other end of the second A link being pivotally attached to the free end of the lever, the lirst mentionedlink being adapted to move as a unit with the rockshaft and crank arm after the initial rocking movement of the shaft has broken the valve from its seat. f

16. An end train pipe valve comprising a easing having inlet and outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valve movable within the chamber toward or from the seat, a lever pivoted at one end in the casing and extending transversely ofV the 'valve rand intermediately pivoted loosely to the valve, a rockshaft pivoted within the casing, a crank arm extending radially from the shaft and adapted to swing through an arc on the side of the shaft remote from the valve, a pair of links, one end of one link being pivotally connected to one end ofthe other link, the other end of one link being pivoted to the free end of the crank arm, and the other end of the second link being pivotally attached to the free end of the lever, the first mentioned link being adapted to move as a unit with the rockshaft and crankarm after the initial rocking movement of the shaft hasbrokenthe valve from its seat, there being a locking cam formed on the first mentioned link, and. a yieldable locking detent mounted in the casing and adapted to detachably engage the i cam to hold the valve in open position. 17. An end train pipe valve comprising a.

.easing having inletand outlet ports and a chamber therebetween, a valve seat mounted in the casing around the outlet port, a valvel movable within-the chamber toward or from the seat, a lever pivoted at one end in the cas'- ing and extending transversely of the valve and intermedately pivoted loosely to the valve, a lug on the valvein position to be shaft remote fromthe valve, a pair of links,

one end of one link being pivotally connected to one end of the other link, the other end of one link being pivoted to the free end'of the crank arm, and the otherend of the second link being pivotally attached to the free end of the lever, the first mention-ed link being, adapted to move as aA unit with the rockshaft and crank armafter the initial rocking movement of theshaft hasbroken the valve from )its seat, there beinga locking cam formed on therst mentioned link anda yieldable lock- Y EDWARD A. RUSSELL.

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