coupling action, tliereby to limit the movement of the nozzle over the nipple, as best illiistrated in Fig. 3. Rotation of the handle 5 in a clockwise direction after the lubricant-expellidg guii has beeii couj?led with thi@ lubricant-receiving nipple, forces tl-ie pist6n 4 inwardly relative to the @arrel 1, thereby for-.ing lubricant under relatively low pressure from the barrel 10 past the ball check 18 through the ebamber 12, ancl theii past the closure valve 13 and throu ,@,,h the slot 22 in the front encl of the closure valve into .he lubricant-receiving nipple 9a. Lubricant -foi-ced into the lubrilr) cant-receiving nipple in the abo,ve-mentioned iiianiier is under a relatively low potenti,,tl pressure wliieh .s s-,ifficient to lubricate a beariiig free from dirt or hardened lubricant. The low potential pressure -will de20 pend oii the diameter of the barrel, the pitch of the tlii-eads ' on the stem 3 and the torqi-ie applied thereto. ks con-ipared witli the Iiigh potential pressure liereiiiafter described, I)iesstires of eveii one or two thousand 25 I)oun(is per square iiieli may be considered OW. 'ff ibe,,iriiig c,,Liiliot bo, pi-operly, ILtbi,icated Nvitli lubricant that is fore6d to it under a rel-(itively IoNv poteiitial pressure,,the pres30 sure of the Iiibric@nt mgy be greatly in@ereased by perinitting, the barrel 1 to be ,turned in a contra-clockwise direction so that the closure valve 13 may return to its seat and allow the char@ber lq to becon-ie 35 filled witli lubricant. The cliamber 12, as the valve 13 closes, becomes filled with lubricaiit becatise the pressiire on the lubricant iii the barrel forces son-ie of the Ilibricant past the. ball cliec'k 18 and into the chamber 12. 40 By turnitig the handle 5 again in a clockNvise direction, the closure valve 13 is forced open and into the chaiiiber 12 by the smooth end of the lubricant-receiViDg ni-Dple 911, whicli acts as a clisplacing plungei- to force 45 Iiibricant froni-.the chamber 12 at a kelatively Itigli potentialpressure. When foreino, lubricalit under hi(,rll presstire, tlle torque exerted upoii the li@ndle,@ does ]lot have to be as gretit ,is wlleii foreing,lubricant under low 50 I)ressiire. While the Itibricant is being tbus forced from the cliamber 12, it is prevented -@roiii letil@@in@ back into the barrel 1 @by the I)all check 18 which traps the lubrieant in tl)e cliai-iiber .12. 55 1 The torque to produce Iiigh pressure may be exerted on the@barrel .1 instead of on the handle 5. Removal of the o-tin -from the lubricantreceivino- nipple is'- 'effected by turiiing the 60 hindle 5 in a coiitra.-clockwig'e direction to unscrew the @ cotipliiig threads from the threads on the lubricant-receivi-ng nipple, thereby permitting the closure valve 13 to be clo@ed by the spring 16, disengagement 66 being eff6cied by sliding th,e coupling of t:he gun over t) ie si-nooth end 21 of the -nipple 9@ sul)stintially as described 'in the abovementioned a.pplication. Even aside from its broader dspects, the constriietion illustrated involves many im- 70 portant features. Thus the inwardly opening valve 13 pre-@ents leakage of lubricant when the nozzle is disconnected f rom tb,-i Ilipple, notwithstanding that very siibsttiiti'll pressure may be le-ft in th(, 1),,irrel 1, 75 aiid the location o-I thi Valve in front of the chamber instead of behiiid compression it@ entraps lubricant so that it -v'vill liot run otit -,vhen disengaged even. tbough very fluid. Additionally, in ordinary ol)eration the 50 chamber 12 will be full eacli time that the iiozzle is disconnected from a nipple so that during the coiipling . oporation tlle next nipple i@ aiitomatically subjected to a very Iiigli potential pressure, say 12.000 pounds 85 or more. Of course tlle actual pressure exerted -will depeiid iipon the@ fi-@sistance op@. I)osed to exptilsioli of the lub'r@icant froil@' the ehai-nber 12, and -,vhen the bearilig to be Iiibricate-I is free, very little of th,6 potential 9() pressure inay be iitili'zed, the coupling.operation .i-equli-iii,,, co@respo@dingly 16ss torqite. WhIe I bave showii and described a proferred form of one eiilbodimeiit of my in-vention, it will, be. understood that changes .95 involving omission, alteratioii, substitution ,tnd rever al of parts,.and even chanoes in the mode of operation, ma@ be i-nade without departii@g from the scope of my'inv@ii-'@, tion, -whic@ is best defined in tile follow-Ing loo claims. I claim 1. Tju'b@icant apparatus f or injectifi g@gre@ e or oil into machine bearings comprising, in, colilbinatioli, a source of lubricant under io5 presslire aboi,e atinospherici mbans forming a cliamber ii-i Iiibricaiit communication with said source and a coiipling for conn6etion to a lubricant receivino- nipple, said couplino, having a movable connection with saia nip-- 110 ple.periiiitting tl-ie latter alterilately to expand aiid coiitract the effective voliinietric lubric-,int receiving capacity of said chamber, sealing metns enga I (-ring ithe periphery of said nipple'-for renderin@; fluid tiglit the 115 joint bet-weeii srid coiipling and nipple, ancl valvtilar means, contr6iling l@ibricant flow from sai(I source into -s@lid chamber effective to permit flow onlv from said soiirce to said chadiber -,in,d to' prevent retiirn flow. 120 2. Lubricantapparattisfotinjectinp,@ I grease or oil into indehiiie bearings, tbroiiah lubrietnt receiving nipples Issociated Witli said beirings comprisljiu iii. coi-nbii-iitioii, t. lubricant reservoir provided %vith a I iibricant 125 exit and Itibricant.'displacino, means for forein (r Iiibricant from @a,'d res@rvoir throu,,h said @xit, lubricant condlicting condu,lt means rece'iving the lubricaiit from said exit, said conduit meaiis' formed to receive - said 130,
ni )ples and said eonduit means fo-r caiising refa]tive rotation of said conduit means and nipples to effect relative reciprocation of the two for alternately expanding and contracting the - Volumetric lubricaht receiving capacity of.said conduit means, and Nalvular mea@s for closing -communicationbetween said conduit means and reservoir when the 10 capacity of said condiiit ineaiis is b6ing contracted and for establishinlr such communication wlien the ea acity i@-being expanded, p valve means adjacent the discharge end of said conduit medns for positively preventing' 1,5 egross of lubricant - when the nipple is removed therefrom and sealiiig -uaeans for rend@ring l@bricant tight thejoint between said nip,ple and nozzle when said nip 'le is entered into said conduit meads and s'aid valve 20 n-ieans is opened to permit discharge fiom said condiiit means. Apparatus for inj ecting oil or grease into machine beai,ings comprisinl,, in combi.nation means pi,,ovidi . ng a. sour@@ of lubri25 cant under pressure, lubricant conducting conduit means connected to stid source com13rising t dis6harge nozzle tdapte@l to i-eceive'a lubricant receivino, iilpple, said condiiit means haviing a ch427ek valve and nor30 mally closed valve means beyond said check 8 nIE)ples, cooper@ting cam meaias on said closed valve means ada@ted to be opened solely by the entrance of the nipple int6 said iiozzle, aiid cam means pres@nted partly by said ni@ple and partly by said nozzle for drawing on6 towdrd the Gther by relative 7o rotation for compressing the lubricant iri advanc e'of the check vaive dui-ing opening mov ement of said normally closed valve. - 6. Lubricant apparatus for iiijetting or oil undei pressure into machine bearings 75 com prising, in combination, nieans forming a chamber, a'source of lubricant ulider ressure above atmospheric, said source connect ed to said chamber throu h. valve means pei-- mitti ng pa43sage of ' lutricant from sbid 8o sour ce to said chamber and preventing return flonv, a lubricant receiving nipple, a coul) ling for connecting said ohamber to said nipple pr6vidiiig' for relative inoven-ient betw eeii said nipple and coupliii(r foi- forcing 85 tn lubri cant froi-n sa'id chamber into s@id nipple, a closure valve in said coiipling adapted to be opened'when said coupling is. connected to said nipple and a check valve iii said nipple acting to prevent 6,icape of lubricaiit go therefrom. 7. -Lubricaiit, appa,rt.ttus for iiiject'ijig ar,-,ase or oil. uiider pressure iiito inachine bearings comprisiiig, in combin@,itioii, iiietiis forinino, @ chamber, a source of lubricant unv,,tlve, said check valve operative to permit. der:pressure above.atmospheric, said source flow of lubricant -froin said source toward said nozzle and to oppose ret,urn flo-v@, and said normally closed valve means adapted to 35 be positively opened when the nipple is en@ered into said iiozzle. 4. Apparatus for injecting oil or greasq into i-nachine bearings comprising, in combination, means providing a source 6f lubri40 cant under pressure, lubricant conducting conduit- means connect,6d to said source comprising a discharge nozzle ada@ted to receive a lubricant receiving nipple, s,,tid conduit ineang havin a check valve and normal9 45 Iv closed valve'ineans beyond said check @alve, said clieck valve operative to permit floiv of Itibrica.nt frolil siid source toward sai-d nozzle and to oppose return flow, said. nornially closed i,alve means in said nozzle 50 ,,dapted to be mechanically opened when the nipple is enter4@d into saia nozzle, and sealing ineans for rendering fluid tight the joint between s@,ticl nozzle and nipple. 5.. Apparatus for injecting oil oi- (rrease 55 iiito ma.chine, bearings comprising, in combin,,ttion, means pi.-oviding @t source of lubricant Ulide r pressure, lubricant conducting (@onduit meai)s connected to said soiii,ce compri-siiag a discharge-nozzle adapted to receive 60 a lubricant receiving nipple, said conduit i-neans h,,tving a check valve and normally closed valve meaiis beyond sa-id check valve, said check v,,ilve operative to permit flcw, of lubricant fr6m said source toward sai ' d noz65 zle and to oppose return flow, said normajly connected to said chan-iber througli valve means permitting @assage o-f lubricaiit fr,oin s@iid s6urce to said chamber tnd- pi,eN,entiiirettirn flow, a lubricant receiving nipp tn le , a cou'pling foi, connectiiig said chainber to siid nipple providing foi- relative niovement betv@een said iiipple and coupling -foi- forcing lubrica'nt from s,,tid cha ' niber into said - nipple, inwardly openilig vtlve me,,ins at one log end of se@id chaiilbor adaptect to be opened when the lubricant reeeii,ino, nipple is eiitered iiito said coupling, seal@ing means pro-, vidin,a ,t. lubric@tnt tiglit seal betw6en said coi-iplili(y and said iiiplae, ai-id a clieck v,,ilve lio in said t, nipple actin(, to preveiit escal)e of iubricant tberefi-oii:i. injectin(r 8. Lubricant apparatus for grease or oil under pres@ure iiito iii,@eiiiii@e bearin(ys comprisin(r in combination, means i,,15 forinii@g, a chamber-a source -of lubricant under pressure above I atmospheric, said s6urce connected to saicl chamber througli -@alve 'n@ans permittino- passage of lubricint f rom iaid cotircib to said chamber and preveniing 120 rettirii flow, a lub@icant receiving nipple, t coiiplin(y for connectin g said cha mber to said nipple @)roi,iding for relative moveideiit between said. iiipvle and coupling for f oreina lubric.@int from said chaniber i;@fo said nip- 128 ple. and sealin @g n -ieans carried by shid coupling foieno-ao-ement with the peri hery of t@ t@, p sti-id nipple to provide a. lubricant tight seal bet-ween s.aid coupling and said'nipple. 0. Lubricati-ng '@pparatus comprising, in in 95 loo
c(,,Yioination, a barrel, -.means for expelling l.ubricant from:said bari@el, iiieans forming a ebamber -aenerally alioned with said barrel ar.Ld prese@tin',, a subst7,intially sma@'.Ier crosssectio-.qal area th-,in said barrol, a valve, controlling coinmunicatioii between said barrel and said cli,,tiiiber to permit passage 6f lubricant in one direction only, - a coupliiig beyond said cliamber for enga@ement with a io, ILibricant-receivin- nipple, and valve means at oiie end of saidel-ian-iber actuated by relative nio'vcment between said coupl-ing and s,,iid Itibiicant-receiving nip,ple to permit said Pipple t@o diseliarge lubricaiit froi-n said. 1.5 chambei- iinder relatively Iiioh potei-itial pressure.. 10. Lubricatino, appa-ratus comprisin(T, jn coinbi'nation, a rrel, means for expelling lubricant froi-n aid b,,irrel. means forming a 20 cliamber cenerally aligned -,vitli s,,tid barrel artd prese@ting a 'Subst,,intially smaller crosssectional ,irett thqn said,bari-el, a v,,tl@re, between said barrel and said chaniber to peri-fiit I)assage of li-ibricaiit in onc, direction 25 only, a coiipling be@ond said chaluber for en(ra,),ement -%N,-ith a lubricaiitreceiving nip., n zn ple, a-nd a @valve ti,djacent the outer end of said chamber andnorinally closin& said end, s,,tid valve adapted to engage s,,Licf lubricant30 receiving nipple -%vhen saicl chamber is moved t-o-ward s . aid lubricantreceivjiig:nipple thereiinseatin(r said.valve and pern-iitting said riipple to force I-Libricant out of saicl chamber iiito said lubricant-receiving nipple under a relativelv higb potential piessure. 11. Lubricafing apparatus comprisincl,, iii combinati,)n, a barrel, means for expelling liibric,,tnt fron-i said barrel under a rel,,ttively I oiv p6teiitial pressure, I bandle for i-n,,in-Lially 40 operatin(y said means, ,i cham@er of stibstantiall-@ sii@aller cross-sectiodal area than said b-,irr'el located in a fixed relation to said barrel, n-lean's perniitting flow of lubricant froii,i saicl b,,trrel to said chamber and preventiiig reverse flow, and a coli lidg for said 'I@ el, n p cliaiii @r for moiable en(yaueineht witb ,i Itibric aiit-receivi-n" part, said bandle oper,it]N-e to exl)el Iiibricant under liiah or lo w P()tf,iiti@il pressilre into said lubrica-nt-receivin@- part. 12. Lubricatin(, apparatus comprising, in coitibination, a barrel, manually operable means for expelliny lubricant tberefrom, a ebamber locaied iii-a fixed relation relative to said barrel And having a cross-sectional s ,irea ubstantiall@ le s thftn said barrel, a (@,liecl-, valve locaf@d at the iniier end of said chtinber to permit passage of lubricant only fr m said barrel to said chamber, a coupling 0 relatively low potential pressure and opera- 65 tive in the opposite direction to preve'ut lubricant flow from saicl charnber fbr permitting filling of said chamber with lubricant frorn said barrel and thereafter. opera'tive in the first-mentioned direction to per-.'.70' iiiit @aid part to force the lubricant, entrapped in said ch,,tmber by said check valve, into said lubricant-receiving part under i-e'@.atively high potential pres-,ure. 13. Lubrica.ting appara,tus coriiprisin-, in @5 @oinbiiiation, a bairel, m,,tnuall-y-opera6l@ exI-)elling means for forcing lubricanf therefrom, a valve-carrying part secured to. said bai-rel, a ciianiber in said valve-carrying part pre@enting a substantially smaller cross-see- 80 tional tre,,t than said barrel, a coupling se- - cured to said valve-@arrying part,, for en(yagement i-vith a lubri.cant-receiving part, and a v,,ilve at the inner end of said chamber to permit passac,re of lubricant from said 8r) barrel into said ebtinber and to prevent teturn floiv, said lubricant tbereafter forced. from saicl cliamber by relative movement betiveen said coupling and said lubricant-receiviiig part. 90 14. A pressure device for lubricating apparatiis comprising, in combination, a lubricaiit-rece'lving cliamber @having a relatively small cross-sectional area, a coupling beyond said ch-,inaber for enuagement with a lubri- 95 cant-i-eceivin(y nipple@-I means.for entrapping lubricant in said cbamber, a lubricantpressed hat.washer adapted to fit over the end. of said lubrica-nt-receiving nipple and a spriiao,-pressed valve normally closing, the loo oiitleicend of said chamber, said valve actuated by movernent'of said chamber to-wa@d saicl lubri(@ant-receiving nipple to permit lubricant to be forced from said chamber into said lubricant-receiving part unde r a 105 ]L-elatively bigh potential presstire. 15. A pressure device for lubricatino- apparatiis comprising, in C(@mbination, a fubriC',ITlt-receiving chamber having a relatively small cross-sectional area, a eoupliiig for said 110 chamber for en(yagement -with @ lubricantreceivino, in.ippl@', sealin means fixed rela9 tive to s-aid coupling for preventing leaka(,e of lubricant from said chamber past said lubricant-receivin,& nipple, a spring-pressed 115 ebec'k valve located at the inlet end of said chamber to trap the lijbricant in said cham ber after it'has passed said check valve, and a closure valve located at the front end of said cliamber and, operated by engagement 120 tliereof with the end of said nipple to perinit displacement of lubricant from said chamber under relativel high p6tential y 60 for said ebamber f6r engagement with a lu'- pressure by @said iiipple. bricant-receiving part, and means operative 16. Lubricating ap aratus comprising, in 125 ,@in. one direction to permit passage of lubri- combination, a barrep, means for expelling ca,nt from said barrel by way of said cham-. lubricant therefrom, a chamber having a ber to said lubricaiit-receiving part under a substantially smaller cross-sectional area
than said barrel, means for entrapping lubricant in said chamber, a coupling presenting a plurajity of @emalp,'threads, a lubricantreceiving patt presenting coo@peratiag 5 male threads, @Lnd valve engageable, with the end of said lubricant-receiving part and @opened th6reby to permit passage of lubtibricant uiider a relatively low potential pres-@ sui-e, a, lubi-icantreceiv,ing nipple pres,enting tlle male portion of a coupling, a discharge nozzle, lubricant6ondudting conduit means coiinecting said containei. witli said nozzle 7 0 said nozzle'havixlg. a female portion f6r coupl'iig engag@ement witli said nipple, said nozcaiat from said barrel through said chamber zle and nipple presenting cooperatink i""'ined -ieans for drawiirg said nozzle o under a relatively low potential pressure to lo @Baid lubricant-receiviiaa part when said coua is rotated lbo engage the female p 9 threads with the male threads of said lubvri.cant-receiving part. 17. A pressuke booster foi- lubi-icating ap15 paratus comprising, in combination, means formin a chamber adapted to receive lubrig cant valves at both ends of said chamber to trap lubricant thereiii, a, coupling beyond said chamber presenting a plurality o, fe20 male threads, and a lubricant-receiving part presenting a plurality of male threads . for engagement with said female threads, the pitch of said threads beiiig such that said coiapling may be rotated by the pressure of 25 lubricant in said'chtimber when said coupling is engaged with said lubricant-receiv: ing part. 18. Lubrica;ting apparatus comprising, -in combii@atioia, a -barrel, manually. operable30 means for expelling lubrioant from @aid barrel underrelatively @low potential pres sure, iiaeans foiming a chamber rigidly secured to said'@ barrel a coupling for said chamber rigidly secured thereto for engage.35 ment with a lubricant-rgeeiving nipple' I a ball check between 'Said barrel and said chamber'foi''trapping the lubricant in said chamber, . and a closure 'valve at the outl@t end of said chamber oper6,ble by said nipple 40 to permit entrance of said nipple into said chamber whereby to for@e lubricant from said chamb6r into said nipple uiider a relatively high potential pressure. i9. Lu'bricating apparatus coinprising, . in 45 co@mbination a container for supplying lubricant under a relatively low potential pressure, a lubricant-receivln-u nili,ple presenting the male portion of a co@pling, a discharge nozzle, lubricant-coiiducting conduit means 50 connecting said co'ntainer with said nozzle. said -nozzle having a feliiale portion fo@ coupling engagement with said nipple, said nozzle and nipple presenting cooperaiin'g inciined means for. dra.wing aid nozzle over 55 said nipple when said nozzle is turned relative to said nipple, said nozzle conta,ining an inwardly opening closure valve openable by sa@id nipple -when said nozzle is connected to said ni@ple, and a check valve in said coii60 duit means between said closure valve and said container, said check valve permitting flow of lubricant fr'om said container but opposing reverse flow of the lubricant.' 20. Lubricating apparatus comprising, in' ii ver saidnipple wheii said nozzle is turned r@lative to said 7r) an inwardly by said nipnnected to @said d @ condiiit means etween sa d c re va ve- and said,-contain8 0 er, said check *alve permitting flow of Iiibricant froni said container bu't opposing revers6 flow of the lubricailt, and a peripheral lubricant-pi-essed seal- in said nozzle seated against the peripyery of - said nipple s5 during the entire opening and dlosing of said closure valve. 21i Lubricating apparatus coiiiprisi-ug, in @ombinittiou,- a container -foisupplyina lubricant under 'a relatively low pot@ntial go pressure,: a lubricant@eceiving nipple presenting the male portion of a coupling, a discharge nozzle, lubricantconducting conduit. mean8 conn6eting said container with said noxzle, said nozzle having a female portiori 95 for coupling enga;gement with said hipple, said ilozzle and nipple presentiiig cooperating inclined means for drawing said liozzle over said nipple when said nozzle is turned relative'to said nipple, said, nozzle contain@ io inali iiiivardly opening closure valve openat@le by said nipple when said iiozzle is connected to said, nipple, an annular seat: for said closui-e valve adapted to surrotind said nipple when the latter, is fully entered i o iiit,o said noz,zle, and. a check valve in saici cond-4it means between - said clogure valve and said container, said i@heek valve permitflow 'of lubricant- from said container ti"g but opposi.ng reverse flow of the-lubricaiit; 110 22. Lubricating apparattis comprisinl-, in C.Oinbination, a container for supplyini lubricant under a relatively low potential pres@. sure, t lubr@cant-receiving nipple presentiiig the iiiale"@portion of a coupling; a dis- 115 liai-ge no@zle, lubricant-conducting conduit means connecting sai4 container with stid nozzle, said nozzle having a female portion for c'ouplin'o,.engagemenf with said nipple, said nozzle ,ind nipple presenting cooperat- 120 ing inclined meaiis'for drawing said nozzle o@mr said nipple w.hen said nozzle is turned relative to said iiipple, said nozzle containing an inwardly op6ning closure valve openable by said nipple when said nozzlp, is con- 12" nected to said nipple, an annular seat for said closiire valve havin.g an internal di-ameter greater thelri the end @ortion@@'of said e and a ek val 'd '-'d " t nippl I che ve- in sai. con ni 05 'combination, a containe-r for supplying lu- means 1--n".@@en said closure valve 130
1,674,538 cont,@iger, said checlc.valve permittino, flow of lubricant from said contaiiier but opposing re-,,erse flow of the liibricant. . 23. A lubricant-expelliiig device compi,is-. r, ing, in coiiibination, a barrel, a redu@ed encl portion inteorral ivitli one end of said barrel, a v,,tlve-carrying part -adapted to fit s,,iid reduced portion and carrying a elleck valve adjacent oiie eDd thereof and a closure valve .I(i, adjacent the other ei-id, said pti-t, liii,ii-ig :i -high presstii-e chamber between siid valve,-, of a crosssectioiial area s'ubstaiitialiy siiialler thaii s,,tid barrel,.couplino, means carried bv said pirt for engao-ement..witl-i t lubri-' ctht-i6ceiving nipple, and a hat washer iii said part foi@w,,irdly of said closbre Val-,,e for engagement with said iiippl.e. @24: A: lubi-ica,nt-expelling device colnp'ri-,;ipcr i'i-i combiiiatioll, a barr6l, a pluil(,!eK ill @20 said @arrtlii-eaded stein 'el' a . for si.;dl pl@iri(--, ,er , a. peaiing b,,iiidle on said.steni, a nut for said stem carr;ed by one eiid of said: ba-Frel, a re(lueed en(I portion ii-itog@al,with the e . lid of said bari-el opposite said iiut, a valve25 carryiii(y part ad,,ipted to fit said redi-iced portion --iticl carr@ing a: cheel@: valve adjacent one end thereof dnd a closure valve adjacent the other end; said part liaviii,_y a hicli 30 pressure chai-nber betweeh said valves@of a cross-sectional area subst-,tntia'-Iy si-naller tlidn said barrel, -coupling means c,,.trried by said part. for eii(yao-ement with a lubricantreceiviny nipple, and a hat -%tasher in said part forwardlv of said closure valve for e@ t 'th said nippl _gagemen. -Nvi e. .25. Lubricatin(v -,ipparatus for fordi@ig ease or oil under pressu-re.into machine associated with i,natioii; means 40 ber and a receptacle for the lubricant supp d ch,,tmb'er; a. lubrica@t displacing men-i er in said receptacle, a screw threaded stem for actuat45 ' @g said displacin(r men@ber, means foi-min.(, in a nut carried by @,-tid receptacle for coaction with said.stem,ld bandle for said stem, and means including cooperating cam means on said nozzle and nipple and I-Libricant con50 ducting passtges for effectin- -by rot,,ition of id handle conn etion of '@-,tid nozzle to sa e said nipple and thereafter forcing lubricant under relatively low-potential pressure from said. receptacle into said chamber,iind from 55 said chamber uiider rel,,ttively bigh pot@ntial pres.gure into sai@d nipple, sa@d means ineltiding a lubricant actuated valve device for interrupting communication between. sai'd receptacle and chamber. 26. Lubricatirig appar-,Lt@s for forcing grease or oil under prdssure into machine bearin(rs throuo@h nipples associated with sa'id bearings hwving, in combi:ff,@ttion; rneans forminlr a relativel@ non-rotatable lubricant 65 receivii@g chamber, nozile for conueetion to a iiipple, and lubricant receptacle; an oper,,ttin(, handle coniiected to 'a stem, extendiii(y into' said receptacle, a lubrie,,,,nt di,;I)Iac'in.iy)eii,ib-er iii said re@,'el)tacle 6pei,,AtiN,el), coiiiiect-ed to said steiii, Lild means tetuate(I 1).@' 70 -i-btatioii of said handle fo'r coi-iiiectiilg S',Ii(I 'n'ozzle to a nipple aild there,,Ifter forcing liibri6,int uiider i,elatil"CIY lo-w poteiitial I)res,- Ftire by , said clisl)licin- ' iiieiiiber froiii said i-eceptacle into sai(I chai-fiber and fore- 7r, iiia the lubricant ulidei- i-elotively higl-i poten'tial prbssure from siid ebamber into said riipple, said means-comprisii@g 9, fliiid actu-@, Ited Vilve dd%,ice for interrupiingleommunlc,,itioii betweeii said r6ceptacle alid chailiber. so 27'. Lubricatiiig a-6 aratus for forcing p Qrease or oil under pressur'e ointo machine nipp Eearincrs through les a,@sociated with gaid Oearings having, in combiiiation, means formina-lubrieftnt receptacle and c'ommuni- 85 eating Iiibricant rec'eivino, char@ber and nozz] c@ for connection 'to i a @nipple, a fiormally closed val,@e d6vice for controlling communication between sa,ld 6hainber and ndzzle, an ol)eratirig handle, and means actuated by ro-@ go tation of said handle fo effect forcing of lubricint under relativelv low potential pres,@ure from said ieceptacle into said chamber and froni said chamber under rel,,ttively hi,@rh. potenti-,i] pi-essure past said valve into a 95 iiip I.e, sa'cl p i means comprising@ a lubricant actuated *cilve de,,vice for interrupting comi-nlinication between 'd rece tacle and Sal p c i,,imber. 28.. Lubricatin,6@ appftr@tli s for foreiiig ioo grease or oil under pi-essure into -machine bearinas thro-@gh nip' !es associated witl-i said p b(,Ai-in gs liavill combination; ia-xeaiif, fori@li@.4 a relatig@cill, y non-rotatable lubric,,int j@eceivinc-r chimber, nozzle for connection to -,i Tlipplei aDd lubiicaiit, receptA.cl6, said nozzle haviyig metns foisealing the -joint b(, tween the saine 'and aid nipple; An opexat.in@,r hdndle connected to a stem extending 110 I i,-, 12 .1 int6 @id receptacle, a, lubricant displacing s member'iji ---,iid r6.ceptacle operatively connected to sa,id stem; @iid Tneans e4 b@ fo r oll=at rotation of said handle , c ng siid noz7Ae to a nipple and tliereafter forei-nolubricant un(leirelatively low potential pregsui-e b y said (lispla@ino- rhember from sai(I re@ept-,iole. into s'aid ebamber and f6reing the lubricant und6r relativ@ll, high polential pressiire froili slicl ebambe'r int-o said nipple, saicl means compri,-;ino-,,t fluicl actliated valve device for interrtipt.@@@. coiiimiinica@tlio@@i betnieeii sa,id receptacle,,tT)d cliamber. 29. Ltibricating@ appai-attis fdr foreinc)@ grease or oil ii@der presslire into inqelii-n(! b(,,iriii"s tlii@oual-i nipples associated ivitl-i 125 -,aid be,,trin@,ys having, in conibination; iiieins 'Loi-mirig a i@'elatil7ely- non-rotatable lubricant receiviny ebairber,'Pozzle f'or connection to ,t nipple. qn(i l.ubr;.caiat receptacle, sail r@ozzle -.-,,tving sealing'means for engaging the iso
1,647,588 7 periphery of said -nipple; an operating handle connected to a stem extendino, into stid receptaclp,, a lubricant displacing member in said receptacle operatively connected T, to said stem; and means actuated by rotation of s,,tid 1-iandle for donnectiiig said nozzle to a nipple a@nd thereafter forcing lubricant iinder relatively low potential pressure by said displacing member from said receptadle into said chamber and forcing the lubricant 10 under relatively high potential pressure from said chamb,er into@ said nipple, said means comprising a fluid actuated valve device for interru@ting communication between srid receptacle and chainber. 15 , :In testimony -whereof, I hive sianed my n,-mia to this @pecifica,tion. HOWARD J. MURPHY.
