US1618756A - End-train-pipe valve - Google Patents

Description

' 1618156 Fd 2 2? 1927 s. H. GoLo sr AL am 1mm#l Pm.' v ALvE Filed Sept. 11. 1925 2 shuts-Sheet 1 wwwrun-mul@ ma. y

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E'. H. GoLo E'r AL END TRAIN PIPE VALVE mea sept. 11, 1925 2 slams-snm 2 l llnml mmmlulmmmmlnuw\ Patented Feb. 22, 1927.

naiven stares prent orFl'CE l EGBERT H. GOLD AND EDWARD A. RUSSELL, OF CHICAGO, ILLINOIS; SAIDY RUSSELL ASSEGNOR TO VAPOR CAR I-EA'IlNG COMPANY, INC., OF CHICAGO, ILLINOS, A GOR- PORATION OF NEW YORK.

END-TRAIN-PIPE VALVE.

Application filed september 11, 1925. serial no. 55,584.

Y This invention relates to improvements in end train pipe valves for steamcar heating systems.

Systems of car-heating using steam from the engine are constructed with a train line or main supply pipe extending fr-omthe boiler head in the engine cab, to the rear of the train. This train line is connected by Vsteam couplers between the cars and isprovidedQwith branch 'steam connections to the heating pipes in each car. Each end of the train pipe on veach car is provided with an `end train YVpipefvalve, these valves at the adjacent ends of two 'cars being normally open when the cars are included in a train and the steam couplings are in place. Only theV end train pipe valve at the rear end` of the train'will be closed.

AAs the entire train line and are exposed to the weather, it naturally fcllows that it contains considerable condensation, mostk of which can only escape at the rear of the train line. This condensation, rif it is not allowed to discharge at the rear as fast as it collects, will quickly freeze up and cause very serious trouble, in cold weather. However, if the steam pressure is maintained on theA train line all the way to the rear and the rear train pipe valve allowed to bleed7 a little steam through the rear hosethat is, allow a small stream of steam to continuously escape, this common trouble will be avoided.

When the steamY couplings between ad'- jacent cars yare connected, the workman standingadjacent the valves maym-ove themto open position. However, it is sometimes desirable to open these valves from the car platform above,A for example, when steam is connections to be cut yoff from the entire train line, atv` which time the rear train pipe valve is Another object is to provide in connection with such a valve, a bleeding valve, or auxiliary valve, which is'openeclandclosed by a small preliminary movement of the same means which operates the main valve.

In the `form here shown, the main valve memberis yguide-.d for vertical sliding movement toward and from a fixed seat in the valve casing. The auxiliary valve is housed within the main valve, and shares its movement, and in addition has av limited sliding movement of its own toward and from an auxiliaryvalve inthe main valve member. A n Ioscillating cam mea-ns engages a portion of the auxiliary valve member, whereby the initial-movement of this. cam means opens the. auxiliary or bleeding valve, and contiued movement opens the main valve. Movement of the cam Vmeans to extreme po,- sition automatically locks the valves in open position. Reverse movement ot the cam means lirst automatically unlocks the valves and then moves them to closed position, assisted by gravity.

VAnother lobject of this invention is to provide a valve of this type which is compact and simple, and easily assembled.

Another object is to provide an improved connect-ing means between the valve and the end of thetrain pipe, whereby the valve is y easily removedv and replaced.

kOther objects and advantages of this inf venti'on will be apparent tromthe following detaileddescription of one approved form of the apparati'is.V

In .theY accompanying drawings:

Fig. l is a vertical section through the valve. Y

Fig. 2 is a horizontal section,`taken substantiallyl on the line 2-2 ofFig. l.

Fig. 3 is avertical section taken substanV tially on the line 3 3 of Fig. 1. I

Fig. 4 is a' perspective view of the main movable valve member.

Fig. 5 is a perspective view of the auxiliary, or bleeding7 valve member.

ReterringV now to the drawings, at l is shown the end ofthe train steam pipe, supported in the usual manner beneath the car. The main casing 2 'of the end tra-in pipe valve is formed at the rear thereofv with a pipe extension 3 forming in effectl an extension of the train pipe l. This @Xcnsion 3 is formed at its end with an integral co1- repairs or replacement.

Ell

lar el, and a similar collar 5 is removably and adjustably secured on the end ot the train pipe l, preferably by heilig screwed thereon as shown in the d awings The collars or plates eland 5 are pre'lerably rec tangularin outline, and are adapted to be secured together in steam tight position by bolts (l extending through apertures near the corners ot' the plates. The bolts (i are easily accessible for removal, after which the entire valve body an be removed :tor The casing il has a @00nd, downwardly extending pipe connection in which is secured the end S oit the coupling through which connection is made with the adjacent car.

The main `valve seat 9, preferably in the form o't a removable y annular member screwed into the casing 2, is located directly above the outlet '7. The main slidable valve member comprises a rectangular body portion 10 having a cylindrical Vvalve disk 171 ot larger diameter l'ormcd at its lower end, this valve disk 1l cooperating with the valve seat 9 to close the steam outlet through passage 'l'. A guide disk 1Q oit similar size and con liguration to the valve disk ll, is termed at the upper cud ot valve body 10, and the two disks ll "and l2 are adapted to slide vertically between a plurality ot guide tlanges lil extending` inwardly from the walls of casing 2. The main valve body l0 lormed wth y an inner vertical, preferably cylindrical chamber il, within which is housed the similarly formed auxiliary valve member 15. Auxiliary valve member l5 is formed at its lower end with a 4valve plate 1G and stud 17 adapted to cooperate with the valve opening 1S inthe valve scat 19 secured in the main valve plate 1l. Preferably the valve seat 19 is in the 'lorin oit a removable cylindrical plug ot substantially the same diameter as that of chamber 14, to permit the insertion or removal oit the auxiliary valve member l5. Valve member l?) issomewliat shorter than the vertical height of chamber 14, whereby a limited longitudinal sliding movement ot member l5 within chaniber 'bl is pern'iitted to open and close the bleeding valve ltl, A transverse vertical clot Q0 termed through the main mlvebody l0, and a similar slot 2l is formed in the auxiliary valve body l5 to permit the insertion and mov@ ment oi the valve operating` lever or cam hereinafter descriluul.` .A pin 22 extends y transversely through similarly shaped open` ings E23 near the lop ot `valve member l5, and also through the upper portion oll slot :'21, lin preleraaly 'formed with an integral head al one end, and is removably held in place l j a `Cotter pin Q-l inserted through its other projecting end portion. The upper guide disk 1Q may be partially cut away as i; Q5 to permit` access to Cotter pin Q-Llwhen assembling or dismantling the valve. The

end portions ot pin 2Q, between the head Eil and collier pin El; and the auxiliary valve body l5, project through vertically elongated openings lo in the sides ot valve body l0. These permit a vertical movement ot the pin corresponding to the vertical movement permitted auxiliary valve body l5 within the main valve body l0.

A horizontal rock shaft 27 is mounted in bearings within a plug member' 28, screwed into one side of casing 2 and `forming a part tliercojl". 1li. packing boi: or gasket 29 within member 2&3 prevents the escape ot steam about the rock-shaft 27. A stud 30 on the inner cud o't the rock-shaft also has a bearing in the opposite wall of casing 2. A crank or lever extension 3l extends laterally from roclesbaft 27 into the slots 2O and 2l ot the valve members,`an`d forms a cam .means adapted to cooperate with pin 22 in raising the valve members from their seats. The lever 3l is formed with a cam surface :l2 adapted lo cooperate with the lower portion oit pin in opening the valves. Beyond the cam surl'ace 32 is a locking shoulder 33, the base of which is struck substantially on an are about the center oi rockslurft 2T. Beyond shoulder 33 is a second shoulder Ell at substantially right angles thereto, the shoulder 3l being' adapted to engage the pin to limit the swinging movement ot lever ll in the valve opening direction, as shown in dotted linesl in Fig. l. Any suitable connections may be attached to the projecting end 35 ol rock-shalt 2T to `operate the valves. y I

It will be noted, as shown in lull lines, Fig. l, that when in closed positions both movable valve n'lembers 1l. and l5 will be held against their reelioctive seats by gravity, assisted by the sti-iam pressure within the casing 2. llllien itis desired to open the auxiliary valve 1S, to permit the steam to bleed through the valve, the rocleshaft 27 is rotated slightly in a counter clockwise direction (Fig. l), whereupon cam surface 32 engages the pin 2Q to lilt the movable valve member l5 the des 'ed amount. The opening of valve 1S may be regulated to some extent by varying the distance through which valve 'l5 is raised. The friction oi the valve operating connections, and of rock-shaft 2T in its bearings, will ordinarily be sutlicient to hold the auxiliary valve body l5 in its adjusted position. Vhcn it is desired to open the main valve, a continuous counter clockwise rotation isimparled to rock-simili Qi' and cam lever l.. The head 3G ol valve member 'la will now engagethe under survface oit guide plate 1Q at the upper end ol the main valve body. and will elevate this valve lody lifting the valve plate 'll iti-om its seat and opening the main passage through outlet 7. Then the valve has reael'ied its cxtreme open position, the pin 22 will pass over the end lof cam surface 32 and further movement of lever 31 will move i the locking shoulder 33 beneath the pin.

This position of the valve partsis shoivii in dotted lines, Fig. 1. All of these valves, ivith the exception ofthe oneat the extreme rear end of the train, Will normally be in this open position When 5in service, and vit will be noted that these valves are effectually locked in open position so that it will be impossible for the jolting of .the cars to cause the gravity actuated valve members s permitting the valve members 1,0 and 15 to fall to closed 4position by gravity. This movement Willbe positively assisted by the engagementV of the lovvercam surface 37 on the lever 31 with the bottom of slot 21 vin member 15. i

It Will be noted 'that at the time the preliminary movement oflever 81 has been completed to completely open the `auxiliary or bleeding valve, and the head 36 of inem-- ber 15 engages guide dislr12 so that further movement of the lever will open the main valve, the engaging sur-faces on cam 32 and pin 22 will be inV the horizontal plane extending through the center of rock-shaft 27. Inotlierwords, the lever or crank arm of member 31 Will then be at its shortestk so that the most effective Vleverage is available atthis .time for initiating theopening movement 4of the main valve, when it is most needed. Y

When permitted by the proper Vpositioning of tlie operating lever, both movable valve members are freely movable by a vertical slidingmovement to their closed positions, so that they will be effectively held closed by the action of gravity supplemented by the steam Vpressure upon their Y upper faces. On the otherhand, they are effectively locked in open position by the operating lever 31, when the shoulder 33 has been moved beneath the pin 29.. rl`he valve parts are simple, sturdy, and durable',.and are easily removed from or replaced in cas-ing 2, aftertlie removal of plugs 38 and 28 in the top and sides of the casing 2 respectively.

Valves of this type have ordinarily been connected ivith the train pipe 1 by means of a double, right and left hand threaded screw collar, Which is diliicult to position, and'necessitates a considerable endvvise movement of the valve body.l Since 'the spaceivithin which these valves are mounted is limited, and not very accessible, the connecting means, comprising the collars 4 and 5 and the connecting bolts 6, forms a much more convenient means for mounting and removing the valve. Also, when collar 5 has once been properly positioned on the en d of train pipe 1, the valve body may be removed and replaced kWithout disturbing its alignment ivith the valve operating connections.V

7e claim:

1. An end train pipe valve, comprising. a casing having inlet and outletports and a passage therebetiveen, a main valve seatsurrounding said passage, a valve member movable to yor from said s eat,a bleeding port erf;- tending through said valve member for per` initting` free flow of fluid in a relatively small stream from the inlet port to the outlet port, an auxiliary valve seat at the inner end of said bleedingpert, an auxiliary valvemember housed WithinV the first valve niember and movable therein to close or open the bleeding port and means to move the :any iliary valve to open position, and hold it open, Without disturbing the main valve.

k2. An end train pipe valve, comprising a casing having inlet and outlet ports and a passage therebetween, a Vmain valve seat` surrounding said passage, a -valve -memb'eiI movable to or from said seat and adapted to close by gravity, a bleeding port through said valve member for permittingfree flow of liiiid in a yrelatively small stream'from the inlet port to the outlet port, an auxiliary rauxiliary valve, v-:hiletlie main valve re-V mains seated.

3. nend train pipe valve, comprising av casing having'k inlet and outletports :and a passage therebetween, amain valve seat sur'- .rounding said passage, a siidable valve niem- Vbei' movableto or lfrom saidseat, a smaller passage in said valve member efor permitting restricted floiv of Afluid between the inlet and outlet ports,.an auxiliary .valve seat at tlie'inner end ofsaidlatter passage, and an auxiliary valve ineniber housed Within the first valve member and movable therein to close or open the smaller passage and means `engaging the auxiliary valve member vfor successively moving the valves to open or closed position and for locking the Vvalves in open position.

et. An end train pipe valve, comprising a casing having inlet and outlet ports and aV passage therebetween, a main valve seat surrounding said passage', a slidable valve meinber movable to or from said seat, a smaller passage in said valve member for permitting restricted floiv of fluid between the inlet lOl).

llf)

and outlet ports, an auxiliary valve seat at the inner end ol said latter passage. and au auxiliary valve member housed within the lirst valve member and movableI therein to close or open the smaller passage, an oscillatable shaft pivoted adjacent the valve members, a cam arm on the shaft projecting into engagcment with the auxiliary valve meniber for moving the valves successively to open or closed limsitions,` said cam having a looking shoulder which engages a portion oi the valve member when in extreme open position to prevent closing of the valve cxcept by reverse movement ot the cam means.

5; An end train ipe valve, comprising a casing having a va ve seat, a valve member vertically movable in the casing toward or from the seat, said member having a trans` verseslot, a pin extending transversely ot' the slot, a shaft pivoted in the casing adj acent the valve member, an arm on the shaft projecting into the slot and having a can; surface adapted to engage beneath the pin to lift the valve member, there being a locking shoulder at the end of the cam arm adapted to engage the pin when the valve completely elevated to hold thc valve in open position.

6. An end train pipe valve comprising a casing having a main valve seat, a slidablc valve member movable vertically toward or from the seat, said valve member having an auxiliary valve seat, an auxiliary valve member housed Within the first valve member and movable therein toward or from the auxiliary valve seat, said auxiliary valve member having a transverse slot, a shaft pivoter in the casing adjacent the valve member-m an arm on the shaft projecting into the slot and having a cam surface adapted to engage the auxiliary valve member to successively elevate the valves, there being a locking' shoulder at the end of the cam arm which moves beneath a portion ol the valve member `when completely elevated to hold the valves in open position.

7. An end train pipe valve, comprising a casing havingr a valve seat, a. valve member movable in the casing to or from said seat, and an oscillating cam means within the ca `ing and engaging a portion of the movable member for moving the member to open position, said cam means having a locking shoulder which engages the valve member when in `extreme open position to prevent closing oi the valve except by reverse movement ot' the cam means.

8. An end train pipe valve, comprising a casing having a valve seat, a valve member movable in the casing to or from said seat7 saidvalve member having an auxiliary valve seat, an auxiliary valve member carried by the first named movable member and movable therein toward or from the auxiliary valve seat, and an oscillating cam means engaging a portion of the auxiliary valve member :tor successively moving thevalves to open position, said cam means having a locking shoulder for engaging the valve member vvhen in extreme open position to prevent closing ot the valves except by reverse movement of the cam means.

9. An end train pipe valve, comprising a casing having a valve seat, a valve member movable in the casing to or from said seat, and an oscillatable operatinglever including a cam portion adapted to engage a part oit the movable member for moving the member to open position, another portion movable under this part to hold the member in open position and a stop shoulder to prevent movement of the lever past the last mentioned valve-holding position.

10. An end train pipe valve comprising a Iasing having a main valve seat, a vertically movable valve member adapted to cooperate with this seat to close the valve, an auxiliary valve scat in the main valve member, a vertically movable auxiliary valve member housed within the main valve and cooperating with the auxiliary valve seat. the movable valve members havingr aligning transverse slots1 a horizontal rock-shaft projectingr into the casing, a crank extension on this shaft projecting into the slots in the movable members, the crank having a cam surface adapted to engage a portion oil the auxiliary valve member to raise the valve members. and a locking surface movable under this valve portion to lock the valves in open position.

renner n. ooLn. EDWARD A. eussent.

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