 to progress into the sheet separation phenomenon.
Such a phenomenon is not limited only to cases in which the sheet laminate 1 is used as an inner liner, and it is thought to similarly occur in cases in which the laminate is used as a reinforcing member or the like inside the tire. In any case, the separation of the sheet 2 or the sheet laminate 1 due to the cracks leads to a reduction in the life of the tire, which is not preferable.
In response to problems such as those described above, attention was focused on the form at the end sections of the sheet 2 or the sheet laminate 1 which are superimposed to form the splice portion S, and it has been proposed that when the end sections are formed by cutting the sheet material, the sheet material is cut at a temperature equal to or lower than the melting point and using a blade with an edge that is not sharp (Japanese Patent No. 5146591B).
The proposal of Japanese Patent No. 5146591B specifically focuses on a form in which the end sections of the sheet 2 or the sheet laminate 1 constituting the splice portion S are sharpened by cutting at a temperature equal to or lower than the melting point and using a guillotine-type blade with an edge that is not sharp. This proposal focuses on the fact that with a form in which the end sections of the sheet 2 or the sheet laminate 1 are sharpened, the occurrence of cracks or separation of the sheet 2 or the sheet laminate 1 can be satisfactorily prevented, resulting in an excellent product which achieves an effect of preventing the occurrence of cracks and separation.
However, it has been difficult to cut the sheet end sections while maintaining an ideal end section form that is stable and uniform over the entire width of a cut section thereof. Therefore, the separation of the sheet 2 may occur at an earlier stage than other portions in some locations, and this may progress and shorten the life of the entire tire, so there have been demands for further improvements. In a typical carburetor having a choke valve, a choke valve shaft bore is machined through the body of the carburetor passing through a choke valve bore in an intake air passageway extending through the body. To assemble the choke valve in the carburetor, the choke valve shaft is inserted through the shaft bore and then the choke valve is coupled to the choke shaft in the choke valve bore in the intake air passage. A lever arm is attached to one end of the shaft and a retaining means is
to progress into the sheet separation phenomenon. 
 Such a phenomenon is not limited merely to case in which the sheet laminate 1 is used as an inner lining, and it is thought to similarly occur in cases in which the laminate is practice as a reinforcing member or the alike inside the tire. In any case, the separation of the sail 2 or the sheet laminate 1 due to the crack leads to a reduction in the life of the tire, which is not preferable. 
 In response to problems such as those describe above, attention was focused on the form at the conclusion sections of the sheet 2 or the sheet laminate 1 which are superimposed to shape the splice portion S, and it has been proposed that when the end section are formed by cutting the sheet material, the sheet fabric is dilute at a temperature equal to or lower than the melting point and using a blade with an edge that is not sharp (Japanese Patent No. 5146591B). 
 The proposal of Japanese Patent No. 5146591B specifically concentrate on a form in which the end section of the sail 2 or the sheet laminate 1 constituting the splice helping S are sharpened by cutting at a temperature equal to or lower than the thaw point and using a guillotine - type blade with an edge that is not sharp. This proposal focuses on the fact that with a form in which the end sections of the sail 2 or the sheet laminate 1 are sharpen, the occurrence of cracks or separation of the sheet 2 or the sheet laminate 1 can be satisfactorily prevent, resulting in an excellent product which achieves an consequence of preventing the occurrence of cracks and separation. 
 However, it has been unmanageable to cut the sheet end sections while maintaining an ideal goal section kind that is stable and consistent over the entire width of a baseball swing section thereof. Therefore, the separation of the sheet 2 may happen at an earlier stage than other part in some locations, and this may progress and shorten the life of the entire tire, so there have been demand for further improvements. In a typical carburetor have a choke valve, a choke valve shaft bore is machined through the body of the carburetor passing through a choke valve bore in an intake air travel passageway extending through the body. To assemble the choke valve in the carburetor, the choke valve shaft is inserted through the shot tidal bore and then the choke valve is coupled to the choke shaft in the choke valve bore in the intake air passage. A lever arm is attached to one end of the shot and a retaining means is
 to progress into the sheet separation pheuimenon.
Vuch a phenomevon is not limited only to ceses in wyich the sheet laminatd 1 is usef as an unnec liner, and it is thoughb to almilaxlb occur in casex in which the laminate hs uded as a reinforcing member or the jike inxife the tire. In any sase, nht separation of the sheet 2 or the sheet naminate 1 due to the cracks leads to a geduftion in the life lf the tire, whisy is not prewerable.
In gzsponse to kroblems such as those described abovz, attention wqs vmcused on tie fori at the end sectionv of thr sheet 2 or thc shext lqminate 1 which are su'erimposed to form tre splice pkrtion S, and it hqs been pro[osea thxt shxn fhe enf sxctions are formed by xutting the sheet mstqgoal, the sheef matewiwl is cut at a temperature equal to or nowsr than the melting poibt and using a blade aith an eqge that is not sharp (Japanese Patent No. 5146591B).
The pro[osal uf Lqpanerw Oatent No. 5146591B specifically focuses on a form in shocm the end sectioks of the sheet 2 ot hhr sheet laminaje 1 constifuting the splice oortion S arw sharpentd by cutting at a temperature ewual to or ljqer than the meltiug point and usimg a buillotine-type blade wich an sdge that id not shado. This proposal woclses on the fact that with a fjrm in whmch tke end sdctipns of the sheet 2 or bve sheet laminate 1 are dhdrpened, thf occurrence of cracks or separevion of the sneat 2 or the fheet laminate 1 cag be satisfactprily pxeventdd, resultihg in ai excellent [roduct which wchieves an xffect of precentung the uccurrence of vracks anb sepqration.
However, it mas bgeh difficult to ebt the sheet end xecgiogs wiile idintaining at iddal rnd sdction form ghat is stable and unifosm ober the entire widyh of a cuj section thereof. Therrfore, the separatiln of thx sheey 2 iay occur at an earlier stage fhan otheg pjrtions in sjme oocations, anb this may progress and shorten the life of the entire tite, so there have been cemands for furtrer improeements. In a typical carburetor havinn a choke valve, a choks valva shavt bore is machined through the body of the carburetor passing through a xhoke tajve bore in an ontakv anr 'assageray xxvending through tne body. To assemble the choke velve in tha earburetor, the choke valve shsfg is inserted through the shaft bore znd then the choke valve is coupled to yhe choke shaft in the cmoke valvw bors in the iitake air passage. A kever crm is attachwd tl one end of ghe smaft and a reteinnng means is
to progress into the sheet separation phenomenon. phenomenon not limited to cases in is as an inner and it is to similarly occur in cases in the laminate is used as a reinforcing member or the like inside the In any case, the separation of the sheet 2 or the sheet laminate due the leads a reduction in the life of the tire, which is not preferable. In response to problems as those described above, attention was focused on form at the end of the sheet 2 or sheet 1 which superimposed form splice portion S, it has been proposed that when the end sections are formed by cutting the sheet material, the material is a temperature to lower the melting point a blade with an edge that (Japanese Patent No. 5146591B). The proposal of Japanese No. 5146591B focuses on a form in which end sections of the sheet 2 or the laminate 1 constituting the splice portion S are sharpened by cutting at a temperature equal lower than the melting and using a blade an that not sharp. proposal focuses on the fact that with a form in which end sections of the sheet 2 or the sheet laminate sharpened, occurrence of cracks separation of the sheet or sheet laminate 1 can prevented, in which an of preventing the occurrence cracks and separation. However, it been difficult to cut maintaining an ideal end section form that is and uniform over the entire width of cut section thereof. Therefore, the separation of the sheet 2 may occur an earlier other portions in some locations, and this may and shorten the life the entire tire, so there have been demands for improvements. a typical having a choke a choke valve bore is machined body of carburetor through bore in an intake air passageway through body. To assemble the choke in the choke valve shaft is inserted through the shaft bore and then the choke valve to the choke shaft the valve bore in the intake air passage. A lever arm is attached end of the means
 to progress into the sheet sepAration pheNomenOn.
SUch A pHenoMenoN is not limited oNLy to Cases in which the sheet laMinatE 1 iS Used AS aN inneR liner, aND iT IS thOuGhT to SiMIlArly oCcuR in caseS in which thE laMiNate is used as A ReInforcing mEmbEr or the like iNsiDe the tIrE. In ANy casE, thE sepaRation OF the shEet 2 or the sHeET laminATe 1 due to THE cRackS leads to a reductioN In THe life of the tirE, which Is NOt PREfeRabLe.
In responSe To proBLems sucH As THOSe dEScribed above, aTtention was FOcuSed on tHe ForM At the eNd secTiONs oF the sheet 2 or The sHeet laminAte 1 whiCH are supERimposeD to forM thE spLice POrTiOn S, AnD It hAS bEen PRopOsed that WhEn The enD secTIONS are ForMed bY cuttIng the sheet maTerIal, tHE shEet maTeriaL is cUt At a teMperatUre eqUaL to or lower than tHe meLting poinT anD uSinG a Blade WIth an eDge ThaT is not sHarp (JapANesE PATENt no. 5146591B).
The proposal of JaPaNESe patent No. 5146591b speciFIcAlLY focuses On A foRm in WHIch thE end SEcTions of tHe sheeT 2 Or ThE sheet lAmInate 1 cOnStiTutIng thE SpliCe portIon S are sHarpeNEd by cutting at a TEmperature equAL tO OR lOWer tHan The melting pOint ANd usIng a GUiLloTIne-tyPe blaDe WItH An edge that is not sharP. THis proPosal Focuses on the fAct that witH A FOrm in whiCh thE EnD Sections of the sHeet 2 oR the sheet lAMinate 1 arE sharPened, the OccurrencE OF cracks oR seParAtiOn oF THe Sheet 2 or the sheET LamiNaTe 1 can be SatIsfactoRilY prEveNteD, rEsulting iN an excelLeNt PrOdUct Which AChieves aN eFfeCt Of pRevenTIng the OccurRencE oF cRAckS and sepARaTIOn.
HoWeVeR, it hAs bEeN diffIculT To cUt the shEet end secTioNS whiLe MaIntainiNg an ideal end sEcTion form thAt Is sTable aND Uniform oVer the entire width of a cut SEction tHerEof. ThErefOre, the sepAraTion of The SHeet 2 maY occur At an eArLieR STage tHAN oTheR pOrtions in sOME loCatioNs, And tHis may pRogress and shorten tHE liFe of the entire TirE, so tHERe HavE BeEN deMaNDs fOR Further improvemEnts. In a typIcAL cArburetor hAVinG a Choke vaLve, a choKe valVE shaft bOre is machIned throuGh The bODY of The carbureTor passiNg through A Choke VAlVe borE in An intaKe Air PassaGeway eXTenDing tHrough ThE body. TO asseMbLe the choKe valve in the carburetor, tHe chokE valvE shAft is inseRteD ThrOugh the shAft bOre and then The ChoKe valVe iS CouplEd to THe ChoKE shafT in tHE choke valVE bOre IN ThE intake air pASSAge. a leveR arM Is attaChed To one end of the shafT And a retaining mEans IS
 to progress into the shee t separati on ph eno men on .
Su ch a  phenomenon is notlimited only to casesin wh ic h  the sh eet l aminate 1i s  us ed  a s a ni nn er li ner , and i t is thoug htto  similarly o c cu r in cases  in  which the l ami nate i suse d  as a  re infor cing m e mber o r the lik ei nsidet he tire . In  any  case, the separa t io n  of the sheet2 or t he sh e e t l ami nate 1 due  t o the cracksl ea d s toa  reduction in  the life o f  th e tire ,whi c h is n ot pr ef e rab le.
In resp onse  to probl ems su c h as th o se desc ribedabo ve,  att e nt io n w as foc u se d o n  th e form a tth e end  sec t i o n s of  th e sh eet 2  or the sheet  la mina t e 1  whic h are  sup er impos ed toformth e splice portio n S,  and it h asbe enpr opose d  thatwhe n t he endsection s  ar ef o r me d by cutting the s he e t  m aterial,  the s h ee tm aterialis  cu t at a  temp erat u re  equal t o or l o we rthan th emeltin gpoi ntand u s inga blad e with a n edg e  that is not s h arp (Japanese Pa t e nt No.514 6591B).
The  pro p osal  ofJ ap ane s e Pat ent N o. 51 4 6591B specificallyfo cuseson aform in which  the end s e c t ions ofthes he e t 2 or the she et la minate 1 c o nstituti ng th e splice  portionS are shar pen edbycut t i ng  at a tempera t u re e qu al to o r l ower th anthe  me lti ng  point an d usingagu il lo tin e-typ e  blade w it h a nedg e tha t  is no t sha rp.Th is pro posal f o cu s e s on  t he  fac t t ha t wit h af orm  in whi ch the en d s e ctio ns  o f the s heet 2 or the  s heet lamin at e 1  are s h a rpened,the occurrence of crack s  or sep ara tionof t he sheet2 o r theshe e t lami nate 1  canbe  sa t i sfact o r il y p re vented, re s u lti ng in  a n ex cellent  product which ach i eve s an effect o f p reve n t in g t h eo ccu rr e nce o f cracks and se paration.Ho w ev er, it has bee ndifficu lt to c ut th e  sheetend secti ons while  m aint a i nin g an ideal  end sec tion form thati sstabl e a nd uni fo rmoverthe en t ire  widt h of a  c ut sec tionth ereof. T herefore, the separatio n of t he sh eet  2 may oc cur atan earlie r st age than o the r p ortio nsi n som e lo c at ion s , and  thi s  may prog r es s a n d  s horten thel i f e o f the  en t ire ti re,so there have bee n  demands for f urth e r  im pro v emen ts . In a typical  ca rb u r etor hav in g a choke v alve, ach o ke va lve sh aft bo re is m a c hi n ed thr ough  th e body of  th ec arburet or  p a ssingthro ug h a ch oke va l ve b o r e in an intake a ir pa s s agewa y  ex tendi ng  throug h  the  body. Toassemble th e chok e va lve i n the c ar bureto r,th e choke va l ve shaftis in sertedth roug h t he sha ft b o r e and  the nthe  choke va l v ei sco u ple d to  thech okeshaft int he choke  va l ve bore  i n t h e  intak e  a i r  passage.A l evera r m is attac h ed t o  o n e end  of th e shaf t and a ret ai ning me ans i s
 to_progress into_the sheet separation phenomenon.
Such_a phenomenon_is_not limited_only_to cases in_which the sheet_laminate 1 is used_as an inner_liner,_and it is thought to similarly occur in cases in which the laminate is_used_as a_reinforcing_member_or the like inside the_tire. In any case, the_separation of_the sheet 2 or the sheet laminate 1_due_to the cracks_leads to a reduction in the life of the_tire, which is not preferable.
In response_to problems such_as_those_described above, attention was_focused on the form at the_end sections of the sheet 2_or the sheet laminate 1 which are_superimposed to form the splice portion_S, and it has been_proposed that_when the end sections are_formed by cutting_the sheet_material, the sheet_material is cut at a temperature_equal to or_lower than the melting point and_using_a blade with_an_edge_that is_not sharp (Japanese_Patent_No. 5146591B).
The_proposal_of Japanese Patent No. 5146591B specifically_focuses_on a form in which the end_sections of the sheet_2_or the sheet laminate_1 constituting the splice portion_S are sharpened by cutting at_a temperature_equal to_or lower than the melting point and using a guillotine-type blade_with an edge that is not_sharp. This proposal focuses_on the_fact_that with a_form_in which_the end sections of the sheet 2_or the_sheet laminate 1 are sharpened, the_occurrence of cracks or_separation_of the sheet 2 or the_sheet laminate 1 can be satisfactorily_prevented, resulting in an excellent_product_which_achieves an effect of preventing_the occurrence of cracks and separation.
However,_it has been_difficult to cut the sheet end sections_while_maintaining an ideal end section form_that_is stable and uniform over the_entire_width_of a cut section thereof._Therefore, the separation of the sheet_2 may occur at an earlier stage than other_portions in some_locations, and this may progress_and_shorten_the life of the entire tire, so there have been_demands for_further improvements. In_a typical carburetor having a choke valve, a choke valve_shaft bore is machined through the body_of the carburetor passing through a choke valve bore in an_intake air passageway extending through the body. To_assemble the choke valve in the carburetor,_the choke valve shaft_is_inserted through the shaft bore and then_the_choke_valve_is coupled to_the choke shaft_in the choke_valve bore_in the intake_air passage._A lever arm_is_attached to one end of the shaft and a retaining means is