US1764493A - Drift valve - Google Patents

Description

F. BALL DRIFT VALVE Filgad May 22 1925 v My prese it invent'ionerelates to irr p'roize;

3 ,Ihents in drift valvee'design'ed especially for' iu sej iippn railway:steam -lbcomotives as an a uxilier'y'" appliance fo gadmitting tol-thefcyi- '5 indei' sfand va1ve ehemhe1e a supply 915 steam 1,

'yja'lves; therein; t6 Whichthe' Steam fOi: Qpe "mg the engine ie supplied through th me;

i fefjl ibi'iezit'ing' and maintaining the parts, V v heated eqnditio i 'whennthe normal eiipplyof k iowxi, during the, time the -10'c16m'otive V is 11 110 drifting of cezisting;withthe main steam sup ply Gut ofi'; the'ebsenceof thesteempermits v '1' the'parts to become dry. and theedihi'ssionof air tejthe interior parts of; the cylinders" and chambers 0001's the walls, thus creatinglan un;v jidlesirelole,eo'nditiexi"and impairing the eifieietiey ef the locomotive l The p imary obj e'ct ofzmyinyention islthe provision f-an a'ppii tean cqntinuously Operating at arid above eelid yetmaintainthe eylinclersychembers' and operating parts in workin eonditibn fol" 2?" greatest eflicieneyf 'lhe 'applianceis'applifcablefer ,use in coimectien- With locomotives "(now in use without};necessity-for material I of thefdi'iye heel,axlesthrough'e speedggov (g 1 1 1 will hereiheftei be more fully point ediout andpl iiiied, j 'Inithejaeeinnpanying tifated one completef exempleef the physical j. embodiment pf, invention fWhei'ei the parts arecombined and arramgeel accQrding to-thejbe'st mode 'I'have thus far deyi' sed for fm n nt qna Fl .Y i wafy steam; locomotive r-havmg the appliance partsq: .j j 1 fFi'gu 'e fitheyd iftgvaiv' in; elosedipositionl j I Figure is a vi ew in sideieleyetiop" i appliance.

j steamitQ-thfe eylin'der'sie eutjoffili Aspi e Well; I p fOlliltEliIl 41' for auxilierypurpo ses isflo ait d;

"'der W anpe fefjsupplyihg ah. auxiliary supply efj I [Wit njthe cyli derfeaemgfifwhiehi hfminimflmspeedX say seven miles per'houp) of .'.the'"l'o cometiv'e, iri orcier that" the main stezi m" supply may beiclitpfi when desirable;

aehang-e and is operated,- preferably from one:

i h V I "P dnziwings llheve illuSQ p p I ta-ry ports 1416mm slide. V ye When th a of my invention ir stzilled ithereoh a ndfindlig eatingth?) er geme t end "assemh ly; o f

Q'i i aitop p n viewdfthe awning i 4 ,;.Figure 3;-is' 'ivertieal seetional iew with "Figure 1/ '5 risa, transverse sectibi elfyiew [at In order th at th'efigeriel al arrangement; an relation if partsmayreadilybe understo'c')" have iridieated in Figuie lthe pertsltdbeilu bricat'ed andfheated' a se cylinder 1 andv sta'nrr ehest 2 with" thefusu a1 1 ep'ereting pieteii 511 stea'n'if line; 01 pipe 3?; The] Usualitiirrt in th'eeibbf the locomotive and the-auxiliary W i supply of steamlfp -the appliafiCeiisjMke j therefrom th'lf ojigh the pipettethecylifide it cztsing fifgri th -lubricating pipe? istqng ne ted: a, afsiuteble place Ptbih main Supply 5 pipe 3 enduetstealm teth e Chest ell 15Lcylini-v '5 1 n the'jinain supplyiseiit-nofies:Well v I "afs'f dufihglthe'time ';that* the=* locomotive s' traveli" gabove a minimumspeed. i

bf thefleeoinetivegfeac erj'exceeds determined spd as seveii miles I e e i ipl l e ep The c ylindef casing and slide fira'lfie fperte dupenga yoke lfi isindle fiar ged hea interpb sed Ebetw eeiilth e yoke; and the; eyhpgler easing KWith; I fastening a -bolts fbrjrigid e; r eth weer, he; 'T wyo evs plate 17 for-"ettachihg t a; I

' leeie iegi -tyith a base suitable 1 s'upppi'tiiiglmembei i ef the ,lit

its interior side by the innersteam cylinder v a an equalized pressure in 1 a As shown in Figure 3 I =The'valve stem 18 isrigidly secured to the lower head of thevalve as by screw threads and is provided with a .stufling box orrslide bearing 19 in the cylinder head 16 or plate interposed between the yoke and, cyllnder casing. Smalldrain ports 20,and 21 are provided in the head 16 and the valve head respectively to drain excess steam and maintain the hollovv p ston and cylinder casing. l" H v V the drift valve' is closed, eta is opened by the action of .a centrifugalatype of. speed governor indicated as a Whole by the numerals 22 and connecting the valve'sten 18 With the ,eomplementary, telescoping, tubular shaft 22 of the governor, Which shaft is jou-rnalfed at 2 on the attacho ing or base plate 17.

' A bevelpinio'n 25 on the tubular shaft'23' and a complementary pinion 26 on the pulley-1 v shaft 27 jeurnaled in bearings ofthe yoke 15 transmit motion from the pulley shaft'tothe actuating part elf-the governor to extend" the balls, pull down the stem and its drift valve and" cause the ports 14 and 12 to, register, p v A pulley 28 is carried on the pulley-shaft 27 and belt29- from the drive-pulley 3O (dotted lines Figure 1) on an axle'of the loeomotive is used-to operate the governor at and-ab ve a minimum speed to be predetermined. V v is 'When the driftlvalvefis lowered to cause Letters Patent is again applied immediately become eflective for eflicientuse; 7

When the speedof the locomotive falls helou the redetermined minimum rate the The'jcombination with a o closed-icylinder casing having a radial inlet port, of an inner cylinder forming anannular space Within the casing, said inner cylinder having an end port and a. radial port, a cylindrical valve reciprocable in said space, said; valve having one closed end and "a radial port, the latter for coaction'withthe complementary port of the cylinder, a stem at the closedend of the valve, and governor mechanism connected with the stemjtor operating the valve.

- In testimo'n'ynvhereof I' allix my signature. FRED BALL.

the ports 14 and 12 to register ititvill heap 7' i 7' parent that steam entering the annular. steam space 8 through the port 9from pipe 5, passes throughthe registering ports totheinteri or l of the inner cylinder 11, 'thenceupward'ly through the-outlet port 10 and pipei7 to the main steam, pipe is traveling at the predetermined minimum I speedorat a speed in excess of this minimum a high speed.

speed the valve is retainedin open position. As thefspeed 01 the locomotivejinereases the valve stem isdratvn down into. the tubular governor shaft 23; Which is "providedfvvith drain port 23 to permit 'exitof- Water or other'extraneousmatter', and a bearing-hall 31 is also located at the lower end of the "tubular portion oft-he shaft 23'to-perform the functions of a thrust bearing for-the'lovver I end of thestem 18' when the governor reaches Thus vvith Vvlhile the locomotive v r 1 the appliance supplying eco tinuousfan'd' automatically controlled auxildri' quantity-of steam to the mainsteam' pipes and cylinders and other parts of the op- V Crating mechanism of the locomotive 'as -deif scr bed the locomotivemay .be permitted to 7 t tar-coast when the main supply of steam is cut ofi' and; the parts are lubrieated andf order that the maintained at; normal Working condition in main supply; of isteainj when ios

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