1附錄英文原文Baletwineknotterwithadjustablewiper1.BackgroundoftheinventionThisinventionrelatestotwineknottersforhayorstrawbalingmachinesandmoreparticularlytoanimprovedwiperarmforsuchknotters.Inoneconventionalbaler,thetwineknotterincludesarotatablymountedbillhookforformingaloopoftwinethereabout.Ononesideofthebillhookisawiperarmwhichhasapairoffinersdefiningaforkforreceivingandguidingtwineusedtotieabale.Ononesideofthebillhookisakniferivetedtotheforkforcuttingthetwineafteraloopinthetwinehasbeenformedaroundthebillhook.Awiperisformedintegrallywiththeforkofthearmandstripsorwiperstheloopoftwineformaroundthebillhookastheseveredendofthetwineisheldinthebillhookjaw.Properadjustmentofthewiperarmrelativetothebillhookiscriticaltotheoperationofthenkotterasthewipermuststriporwipethetwineloopfromthebillhooktocompletetheformationoftheknot.Wiperarmadjustmentisperformedinitiallyatthepointofmanufactureandperiodicallythereafterwhenservicingthebaler.Itisaccomplishedbymodelingorbendingthearminthreeareaswithaspecialtool.Bymodeling,thewiperiscenteredwithrespecttotheheelofthebillhookandadjustedsotheatitjustclearsthebillhookjaw.Forthisreason,itisdesirablethatthewiperarmberelativelyrigidandunyieldingsothatproperadjustmentcanbemaintainedandyetbesufficientlybendabletopermitinitialadjustmen.Also,inrecentyears,strongertwinesarebeingusedonsuchbalerstotiebalesofhigherdensity.Suchchangessubjectthewiperarmtohigherforcesduringoperationthusmakingitmoredifficulttomaintainthearminproperadjustmen,whileatthesametime,makingthearmflexibleenoughtopermitinitialadjustment.Accordingly,itisanobjectofthisinventiontoprovideaknotterwithanimprovedwiperarmhavingastrongandrigidconstructiontomaintainanaccurateadjustmen.Anotherobjectofthisinventionistoprovideaknotterwithawiperarmwhichhasawiperwhichiseasilyandaccuratelyadjustablewithrespecttothebillhookoftheknotter.2.SummaryoftheinventionTheseandotherobjectsoftheinventionareaccomplishedbyknottercomprisingarotatablymountedbillhookforformingaloopoftwinethereaboutandawiperarmwithanimprovedadjustablymountedwiperforslidingatwineloopformthebillhookwhilethetwineendisretainedinajawofthebillhooktocompletetheformationofaweineknot.Inoneembodiment,thewiperhasslotsformedteereinandisadjustablymountedonthearmandrelativetothebillhookby2screwsinsertedthroughtheslotsandthereadablymountedinthearm.Inasecondembodiment,thewiperhasfirstandsecondportionsjoinedtogetheratarightangleandisasjustablymountedrelativetothearmandtothebillhookoftheknotterbytheinsertionandremovalofshimsbetweenthesecondportionofthewiperandthearm.3.BriefdescriptionofthedrawingsFIG.1isafragmentaryperpectiveviewofatwineknotterinaccordancewithapreferredembodimentofthisinvention.FIG.2isanesplodedviewofawiperarmofthekonttershowninFIG.1FIG.3isaviewoftheknotterofFIG.1takenalongline33.FIG.4isafragmentaryperspectiveviewofaknotterwiperarminaccordancewithasecondembodimentofthisinvention.FIG.5-9arefragmentaryperspectiveviewspfaknotterofFIG.1showingprogressivestagesofknottying.4.DescriptionofthepreferredembodimentsFIGS.13showinfragmentaryformaknotter1inaccordancewiththepreferrdeembodimentofthisinvention.Knottersofthisgeneraltypearewellknowenintheartandarewidelyusedcommercially,suchasintheJohnDeere466SeriesbalerssolebyJohnDeereCompany,acorporationofDelaware.Suchbalersareusedforthebalingofhayorstrawintoarectangularparallelpipedshapedbale.Knotter1comprisesabillhook13including(1)acentershaft3onwhichbillhook13isrotatablymountedinaknotterframe5and(2)ajaw14aroundwhichaloopoftwineisformedasrotatedandforretainingthetwineendduringknotformation.Ononesaidofbillhook13atwinedisk15andatwineholder16areprovidedforholdingasegmentoftwine19.Ontheoppositesideandbelowbillhook13,awiperarm17isprovided.Wiperarm17(FIGS.1,2)includesatwineguidingfork20preferablyofcastiron,aknifeblade24boltedtofork20cuttingthetwineandawiper21forremovingaloopoftwine19frombillhook13.Fork20consistsofapairoffingers22,23betweenwhichtwine19isreceivedandguidedandavertex25atwhichfingers22,23arejoined.Onesideofcertex25hasaboss25withapairofthreadedapertures29,31andthwhichwiper21isadjustablymounted.Fork20maybeformedeitherbycastingorforgingandthereforeisastrong,rigidcomponent.Wiper21,preferablyofcasehardenedsteel,isplatelikeandhasapairofslots33,35correspondinginspacingtothethreadedapertures29,31ofboss25.Theprofileofwiper21isconventionalandhasanarcuaterecessorledge37.Wiper21isdetachablymountedtofork20byapairofscrews39,41whichpassthroughslots33,35andthreadablyengageapertues29,31sothatfork20andwiper21areheldtightlytoghter.Wiper21isasjustablerelativetofork20bymovingwiper21backandforthinaplaneparalleltothemajorplanesofwiper21andinadirectionparalleltothedirectionofelongationofslots33,35whenscrews39,41areloosened.ReferringnowtoFIG.3,wiper21ispositionedcloselytobillhook13whichledge3orrecess37centeredinrelationtoanoutersurfaceorheel43ofjaw14.Themaximumrecommendedclearancebetweenafirstportion43ofjaw14andledge37is2.4.mm.attheclosestdistancewhichjawportion45approachesduringrotationofbillhook13duringtheformationofatwineknot.IncontrasttotheconventionalintegralwiperarmdescribedintheBackgroundoftheInventionwhichrequiresmodelingorbendingofthewiperarmatpositionscorrespondingtopositionsA,BandCshowninFIG.2inordertoadjustthewiperwithrespecttothebillhookforproperstrippingofatwineloopfromthebillhook,thepresentembodimentoftheinventionachievesalignmentsimplyandeasilybyadjustmentofwiper21bylooseningofscrews39,41andslidingplatelikewiper21backandforth.Thispermitsfork20andwiper21tobedeformableinuse.Inaccordancewiththefeaturesofasecondembodimentofthisinvention,FIG.4showsavertex51ofawiperarm53identicaltowiperarm17exceptfortheportionshownanddescrobedinFIG.4.showsavertex51ofawiperarm53identicaltowiperarm17exceptfortheportionshownanddescribedinFIG.4.Wperarm53portionshownanddescribedinFIG.4.Wperarm53includesawiper55havingfirstandsecondportions57,59joinedtogetheratarightangle.Wiper55isadjustablymountedtoamajorsurface61ofvertex51byanattachmentmeans63,hereshownasapairofbolts(onlyoneofwhichbolt65isvisbleinFIG.4)insertedthroughaperture67,69inwiper55andvertex51,respectively.Adjustmentpoftheheightofaledge71ofwiper55abovesurface61isaccomplishedbytheinsertionandremovalofshimmeans73insertedonbolt65betweensurface61andsecondportion59ofwiper55.Shimmeans73ishereshownasapluralityofwashers.Thefunctionngofknotter1fortyingtwinearoundabaleofhayisconventionalandwillbedescribedhereinonlybriefly.ParticularreferenceismadetoFIG.1andFIGS.59whichshowtheprogressivestagesofknotformation.FIG.1showstheconditionwhenaneedle75(showminFIG.5)isthreadedwithtwine10storedinatwinebox(notshown)andfromapriorcycle,oneendoftwine19isheldintwinedisk15bytwineholder16.Twine19isthreadedthroughfork20betweenfingers22,23andocerthetopofbale77.Asbale77isformedandmovesagainsttwine19,twine19isextendedacrosstheoutersurfaceofbale77bypullingmoretwinefromthetwinebox.AsshowninFIG.5,whenbale77reachesapredeterminedlength,ameasuringwhe