US1109774A - Bleed-valve. - Google Patents

Description

J. G. LUI'ES & F.E. HARDY.

BLEED VALVE.

APPLIUATION FILED 1330.9. 1913.

1,109,774, Patented sept. s, 1914.

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A M La w sg k lwuwtod jmes G. Lu+s MSW@ a@ H15 NoRms PETERS Co.. PHOTO-LITHQ. WASHINGTON. D VL.

UNKYED STATES OFFICE.

Jannes. turns, or iioorna, JAlvi) or iiitLYAnn 'wasiiiivefrortt` BLEEii-VALVE.

Beit known that we, JAMES Gr. LU'rns andy FRANK E. HARDY, ycitizens of the United States, residing at 'Hooper and Hillyard,re spectively, in the counties of Whitman and Spokane and State of Washington, have in- -vented new and yuseful 'Improvements in specification. f e

vThis invention relates to'iinprovements in Bleed-Valves, of 'which the following is a j bleed' valves forexhausting the train line of a`y car after 'the sanner has been* disconnected from the train.

' 'It is one of the' objects of this inventionto provide an iiprovedbleed valve, whichzwill f remain in an 'exhaustfposition Iafter `it has once been opened so as t'o avoid the necessity of holding it open untilthe auxiliary reserv'oir'has been coinpletelyexhausted. -f

A3 special novel *feature'ofy the invention 1 consists'in providing a bleed valve, `which is openable into the pathof the airtobe ex-` hausted so that the bled `air will yact against the valve tol hold the s'ameopen until the brake system of the car has been exhausted. i

f-A further novel feature consists inv enib'odying the foregoing feature in the forinof charge from the trani-line.4

Other features of ,novelty will beinore,

fully described in yconnection with the accompanying drawing, and will be inore parf ticularly pointed out inuand by the appendf i 4 is a sectional view Yon line 4 4 of Fig. 3,"l

edclairns. I l

'In the drawing :-Figure 1 is a'view in side elevation of an auxiliary reservoir and brake cylinder of a carl orrailway vehicle,*l lshowing the application of oneL forrnof the device of our invention thereto. Fig. 2`is an end view thereof. Fig. 8 is a perspective view of our improved bleed valve structure detachedfroin thef air brake structure. Fig.

showing the "valve closed. Fig. '5is' a view similar .to Fig. `4, `showing the valve open.

Fig. 6 is a sectional 'view 'on line 6-6 ofI Fig.y 4. Fig. 7 i is a y'detail view of one'forni of valve closure detached froni the :bleed valve. l v A ILike Acharacters of reference designate similai-v parts throughout'thefdierent iig-y ures ofv the drawing. V

An air brake structure is illustrated coni` prising an auxiliary reservoir 1 and a-brake cylinder' 2. In the brake cylinder 2 a piston is indicatedhavingl a piston rod 4, which lis'designed for connection withcertain brakev rods or,levers,vnot shown. A spring 5 norl mally acts to retain the vpiston 8 in a retracted position. A pipe 6leads to the car traini line and lwill `be providedwith the` triple yvalve not herein shown. n

The 'device 'of our invention includes a bleed valve casing structure 7, which is provided with an `exte'riorly threaded'ext'ension usual Sfadapted tobe turned into a bore tappedk yinto one part of the structure of the yair brake, which as shown, isthe auxiliary re'serr voir 1.` Theextension 8k is provided with a bleed air exhaust passagexQ, which .extends longitudinally thereof-to a lpoint internally ofthe structure 7 where rit `turns at 10 and` delivers .to a valvev chamber 11.51We have Ish'own'the valve chamber 11..clo`sed or pro-v vided with a iiush plate 12, having an outlet 13 opening to atmosphere. The'flush `plate `12 constitutes a valveseat on which a valve 14 is adapted to be engaged to actas a vvalve closure for the valve outlet 13. We have shown the valve 14 in the form of ak flap valve, which is. arranged to be opened against a portion 15 ofthe casing structure 7, which acts .asia stop limiting opening inoveinentof said valve. The stop forjsaid valve issolocated that thelatter will not atitain apvertical position when inoved to a full o'utlet or open position, so Vthat provision will VLbe inadefor aiitomaticclosure of the lvalve 1 l fThe valve-14 is provided with a sleeve 16,

which f itsbetween wall portions 17, so that lateralinoveinentwill i be restricted. 'The sleeveY 16 loosely embraces a valve operating y A Specification ofrLetters Patent. Sept, 8, y19121 l Application led'December 9, 1913. y Serial No. 805,561, i

Lrod 18, which is journaledin thefcasing f structure 7 and whichv projects-therefrom, as

shownfin` Fig; 6. A packing gland 19 may be provided to insure an Vair tight closure about the valve rod. The projecting end'20,

of thevalve rod, is preferably polygonal, and we mount thereon, centrally of its ends, va lever 21. Operating rods 22 and A23'are at'- tached to vthe opposite endsof said lever 21, so as to extend to opposite sides "of the car for-,connection with the operating cords, orl for operation direct. v Rod 22 is slidable in a hanger bearing" 24, which is ypendant from a?` car sill 25. A"slioulder 26 forins an abutment between which and the bearingl 24 is interposed a spring 27, which functions to normally maintain the rod 22,- and conse, quently lthe lever 21, in kthe position shown. in 'F ig. 2. The outer end of the rod 22 is` hooked, as at 28.

mie end oi the sleeve, as indicated at 29, is offset to form shoulders 30,and 31. v vThe rod:`

' 18is provided With a pin 32, Which is adapted to engage said shoulders -to provide for a lost motion connection between the rod 18 andthe Ava'lve 14. vhenzthefrod 22 is pulled, the lpin 82 Willengage-shoulder 30 and I"lift the .valve '14 from the position :shown lin; Fig. .4 to the position s'hoWn'inF-ig. '5. The train men may then release lthe -rod 1252, and2 under action of its spring-27, thesaid-rodavvill l immediately 'be `retracted to a normal posi-,4 tion. The space between the shoulders :30? Iand 31 permits of this retractive :movement Without in any -Way influencing 4or altering: the position of the valve.

It avill be noted by reference to ithe -arrows .shown in Fig. 5 that the val-ve 114: isf

opena'ble into the path fof the eXhaus'ted Yor,

bled' air so that fthe latter will function tohold the bleed valve open atter 'it has beenf manually moved fto .an open position. '.Ifhef'v stop 15 Wirllllimitjopening movement of 'the valve 14C both imder manual .operation and* the action thereagainst of the exhausting .or bled air. In :the embodiment shown, thel valve 14 is not only located :so that when Vit is opened `it will lie in the pathof the bledi air, but in addition, it is so located sand disposed `with respect to passage 10 and out-y let 13 `that :it will deflect the Sbled or eX# hausing vair `from the :course that it Would` naturally vtake discharging from passage L l10, angularly through outlet 13, :thereby: serving to insure retention of :the valve in an open position, atter once being open,i until the air Vfrom the auxiliary reservoir l has been exhausted. By relieving pressure in the auxiliary reservoir 1, the :spring :5l I

will retract the brake piston .3 and with# draw brake pressure, this operation taking@ place after a ear has ?been disconnected from a train. l

It is Well known that the reservoirl is connectedto the train line by ,a triple valve and that when it is desired to yset the brakes, the train line is opened to latmosphere With-A the result that the triple valve is operated, for passage `of air from kthe auxiliary res-g4 ervoir 1 into ,the brake cylinder to-set 'thet brake shoes. rIf the cars come .oil from the, train, the only Way to release the brakes is to operate the bleed valve. In many constructions it is necessary for the train menl to hold the bleed valve open, `so yas to exl haust kthe auxiliary reservoir Aand this is not only hazardous by reason of the `fact that it involves the frailty of a human element, but it also involves a Waste of time and often includes an element of danger.

In the y present construction, the bleed valve will remain open, after once being opened, until theairis. exhausted, and then 'it will automatically close, and When v.it isl fclosed, it will be subject to air pressure from the reservoir 1 in a manner to securely :maintain it in a closed position, thereby avoiding leakage which now results when ythe valve *is notclosed, subsequent to bleed* ing 'the system.

It is believed thatthe operation anduntil- `ity of f our :invention will Ibe i fully yunderstood Strom fthe `foregoing description, and While `ave have herein shown and described `one speciicfembodiment olf-our invention, We do )not Wish .to be 'limited thereto except for such limitations :as the claims -may import.

le claim 1. As a means for bleeding anair :brake system, Aan air ibrakey structure :provided `with -a fbleed youtlet portion opening to .atmos-A |phere, and closure means lor :said outlet portion openable into the path of and de- `ecting the bled air from :its normal course ito :maintain said closure means' in an open position by @engagement of such air thereagainst, substantially as described. y

42. As a kmeans fior bleeding Ian 'pair brake .-system, an -,air brake structure provided with ia bleed .outlet portion opening to atmosphere, ,and 1a hinged Lvalve closure openable ascribed.

.3. As a means for bleeding an air brake system, an air brake structure provided withy ,a ibleed outlet portion opening to atmosphere, and a hinged closure. interposed in saidv outlet portion fte be opened `into the pathof the bled air and heldin -a closed iposition under pressure through said outlet gportion, substantially as described.

' 4i. As a means `for bleeding an air brake lsystennanair brake structure provided with an outlet portion opening to atmosphere, a hinged flap valve interposed in said out- @let portion in a position yto be held open or Iclosed under pressure therethrough, and means having a lost motion connection With said flap valve for moving the same into the `path ofthe bled air and into an open .position, substantially as described.4

' 5. As a means for `bleeding an air brake system, yan -air brakestructure having a bleed 1outlet portion opening to atmosphere, and hinged valve means actuated to be held in ,an open position `by bled air passing through saidportion, substantially as described.

y6. Asl a means for bleeding .an air brake system, an air brake structure havingla-bleed outlet portion opening to atmosphere, a 'hinged bleed valve interposed in said outlet p ontionto .be opened into the path of ythe bled air, a valve rod loosely disposing said .valve in said outlet portion and having a 95 into the path ofthe .bled air to maintain said p 10st motion connection With Said valve, as our own, We hereby aHiXoui' signatures in means for operating said rod to swingsaid the presence of `two*subscribing Witnesses. 10

valve into an open position into" thepath of the bled air, and means for'returning n f 5 said operating meansfto a normalposition t without altering the position of said valve, Witnesses:` f substantially as described. HAROLD SGANTLEBRY,

In testmonythat We claim the foregoing EDNA BRoYLEs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissionerbf Pa tents,

o Washington, (1.1` f

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