--Jaun et al issued Feb. 4, 1964. In this patent a slot bridging member of soft iron is inserted into the slot opening with the edges of the slot bridging member extending into notches on either side of the slot opening, and then the slot bridging member is distorted or deformed to cause the edges to press more firmly into the notches and hold the slot bridging member more firmly in place. This slot bridging member of soft iron was intended primarily to regularize the flux pattern and it appears that the retaining of the conductors was not a major consideration.
At the present time, conductors used in larger dynamoelectric machines usually have a jacket formed of a thermosetting resinous material impregnating a porous material, and this is cured to a hard state, forming an insulating jacket around the conductor. In addition there may be portions of the jacket coated with a partially conducting elastomer to reduce the possibility of voids developing between the conductors and the slot walls. The elimination or reduction of voids tends to eliminate or reduce corona problems. Conductor arrangements of this type are described in Canadian Pat. No. 1,016,586--Lonseth et al, issued Aug. 30, 1977 to Canadian General Electric Company Limited.
When conductor arrangements as described in the aforementioned Lonseth et al patent are used, they are firmly wedged into their slots to restrain them against movement. However, with time, the possibility of decreased restraining forces has been a problem. Repeated thermal cycling may result in some "bedding in" at the high contact points and some creep or flowing of the materials within the slot. These factors may result in a gradual decrease in height of the slot contents, and if the slot closure system is rigid then the force placed on the slot contents by the slot closure will decrease as the height of the slot contents decreases. The machines presently used may carry considerable current in the conductors and the electromagnetic forces can be quite large and of a vibrational nature, for example, at two times operating frequency. It is very important that the restraining forces should not decrease below a certain level. If the restraining forces decrease enough to permit any vibration, the continuous vibrational forces will eventually cuase a major problem.
In order that the restraining forces be maintained, it is known to introduce some form of spring between the slot closure member and the coductors. These springs have been made in various forms and kinds. When a spring is used between a slot closure member and the conductors, there is usually some arrangement to compress or deform the spring so
--Jaun et al issued Feb. 4, 1964. In this patent a slot bridging member of piano iron is tuck into the slot opening with the edges of the time slot bridging member extending into notch on either side of the slot possibility, and then the slot bridging member is tinge or deformed to cause the edge to bid more firmly into the notches and hold the slot bridging extremity more firmly in place. This slot bridge member of soft iron was intended chiefly to regularize the flux density pattern and it appears that the retaining of the conductors was not a major circumstance. 
 At the present time, conductors used in larger dynamoelectric machines usually have a jacket formed of a thermosetting resinous material impregnating a porous material, and this is cured to a hard state, form an insulating jacket around the conductor. In summation there may be parcel of the jacket coated with a partially conducting elastomer to deoxidize the hypothesis of voids developing between the conductors and the time slot walls. The elimination or reduction of voids tends to eliminate or reduce corona discharge problems. Conductor arrangements of this type are described in Canadian Pat. nobelium. 1,016,586 - -Lonseth et al, issued Aug. 30, 1977 to Canadian General Electric Company Limited. 
 When conductor placement as trace in the aforementioned Lonseth et al patent are used, they are firmly wedged into their slot to restrain them against movement. However, with time, the hypothesis of decreased restrict forces has been a problem. repeat thermal cycling may result in some " bed in " at the high liaison points and some creep or flowing of the materials within the time slot. These factors may result in a gradual decrease in altitude of the slot contents, and if the time slot closure system is rigid then the force placed on the slot contents by the slot closure will decrease as the height of the slot contents decrease. The machines presently use may carry considerable current in the conductors and the electromagnetic forces can be quite large and of a vibrational nature, for example, at two clock time operating frequency. It is very important that the restraining forces should not decrease below a certain level. If the restraining forces decrease enough to permit any shaking, the continuous vibrational violence will eventually cuase a major problem. 
 In order that the restraining forces be maintained, it is known to introduce some kind of spring between the slot closure penis and the coductors. These springs have been made in various forms and kinds. When a leap is used between a slot closure penis and the conductors, there is normally some arrangement to compress or deform the spring so
--Jauj et al issued Feb. 4, 1964. In uhis patent a sloj vridgiig membsr of sowt iron is inserted into the soot okvning with the edges uf the sllt bridgung nwmber exteising inbj nofghes mi either side on the slot mpening, and than tke slot bridging member is distorted or defprled to cause tre ecdes fo press more firmly into the notcges and hold the sloy bridging member more firlly ln place. This slot bridging mgjbew of soft irov was intended primarimy to regularize the flux pattefn anb it appearw rhah the retainmng of the conductors was tot a msjor considerabion.
Av thw present time, conducvors used in larger qynamoelewtxic machines usually yace a backat fuemea or e tgermosfttmng resinoua material umpregnating a porois naterial, and fhis if sured to a hard state, forming an insulauing nacket around the conduxtor. In addition therg may be pjrtions of the jacket coated with a partially conguctiig elcwtomef tl reduce the possibility of voids developing fsteevn the conductors and the slpt wsjls. The elimivation or reduction of voidd tends to eoiminate jr rrduce corona problems. Conduxtor arrangeiwnts of this type cre describeb in Csnadisn Pat. No. 1,016,586--Lonseth et al, isshed Aug. 30, 1977 tl Canadiah General Electriz Cpm[any Limited.
When conductor arrangemxnts cs descrkbed in thq aforemenhioned Lonseth et al patfnt ate useg, they are firmly wedged into their slots to restrain tnek acainst mjvemekt. However, with time, the possnbility jf dezreased reatrainiig forces haf been a probngm. Repeated tiermal cyslint mat resulg in some "beddimg in" at nht high conract points and soke zdeep or flowing of the materials eitfin tje sjmt. These facdors mah resuut in a grabuxl drcrease in height of the slot contents, and in the sloj closure system is ribid then the force placxd on vhe slpt sontents by the slot closure wjll decrewse as the heigrt on thg slot contznts decreases. The machines presently usxd may carry consideraboe current in the cpkductors and the qlectromacnetic forces can be quite large and pf a vibrational natude, for examole, at two times operating frequency. It is very important that the restrauning howces should not decrvasz bzlow a serteii level. If the rextraining forces decrease enougi to permid cny vibration, the continuous ficrational forzes will eventually cuass a majot problem.
In order that the resttaining forces be maintalned, it iw knosn to phtcoduce some form of xpring betwwen the slob closure membdr snf the codkctocs. Chese springs have been made in vqrious flrms and kinds. Wien a spring ls uses betwgen a slot closurs mejher avd the conducyors, there is isually some arrangekegt to compress kr deform thg spring so
--Jaun et al issued Feb. 4, 1964. patent slot bridging of soft iron opening the edges of slot bridging member into notches on either side of slot opening, and then the slot bridging member is distorted or deformed to the edges to press more firmly into the notches and hold the slot member firmly place. slot bridging member of soft iron was intended primarily to regularize the flux pattern and it that the retaining of the conductors was not major consideration. At the time, conductors used in larger machines have a formed a resinous material impregnating porous material, and this is cured to a hard state, forming an insulating jacket around the conductor. addition there portions of jacket with partially conducting elastomer the possibility of voids developing between the slot walls. The elimination or reduction of tends to or reduce corona problems. Conductor arrangements this type are described in Canadian Pat. No. et al, issued Aug. 30, 1977 to Canadian General Electric Company Limited. When conductor arrangements in the aforementioned Lonseth al patent are they firmly into slots to them against movement. However, with time, the possibility of decreased restraining has been a problem. Repeated thermal cycling may result in in" the high contact and some creep or of materials within the slot. may in in of slot contents, and if slot closure system is rigid the force placed on slot closure will decrease as the height of slot contents decreases. The machines presently used carry considerable current in the conductors and the electromagnetic forces can be large and vibrational nature, for example, at two times operating It is very important the restraining forces should not decrease below a certain If restraining forces enough to permit vibration, the continuous forces will eventually major problem. order the maintained, it is known to introduce form spring between the slot closure and These springs have been made in various forms and kinds. When a spring is used slot closure member and conductors, is usually some arrangement to compress or deform the spring so
--Jaun et al issued Feb. 4, 1964. In this paTent a slot bRidgiNg mEmbEr Of soFt irOn is inserted inTO the Slot opening with the edgeS of thE sLOt brIDgIng meMber extENdING inTo NoTchEs ON eIther SidE of the sLot opening, And ThEn the slot briDGiNg member is DisTorted or defoRmeD to cauSe The EDges tO prEss moRe firmLY into tHe notches AnD Hold thE Slot briDGInG memBer more firmly in plACe. tHis slot bridginG membeR oF SoFT IroN waS intended pRiMarilY To regulARiZE THe fLUx pattern and iT appears thaT The RetainInG of THe condUctorS wAS noT a major consIderAtion.
At thE preseNT time, coNDuctors Used in LarGer DynaMOeLeCtrIc MAchINeS usUAllY have a jaCkEt FormeD of a THERMoseTtiNg reSinouS material imprEgnAtinG A poRous mAteriAl, anD tHis is Cured tO a harD sTate, forming an inSulaTing jackeT arOuNd tHe ConduCTor. In aDdiTioN there mAy be porTIonS oF THE jAcket coated with a paRtIALlY conductIng elaSToMeR To reduce ThE poSsibILIty of VoidS DeVeloping BetweeN ThE cOnductoRs And the SlOt wAllS. The eLIminAtion oR reductiOn of vOIds tends to elimINate or reduce cORoNA PrOBlemS. CoNductor arraNgemENts oF thiS TyPe aRE descRibed In cAnADian Pat. No. 1,016,586--Lonseth et aL, iSsued AUg. 30, 1977 to CAnadian GeneraL Electric COMPAny LimitEd.
WhEN cONductor arrangeMents As describeD In the afoRemenTioned LoNseth et al PATent are uSed, TheY arE fiRMLy Wedged into theIR SlotS tO restraIn tHem agaiNst MovEmeNt. HOwEver, with tIme, the poSsIbIlItY of DecreASed restrAiNinG fOrcEs has BEen a prOblem. repeAtEd THerMal cyclINg MAY resUlT iN somE "beDdIng in" At thE HigH contacT points anD soME creEp Or Flowing Of the materialS wIthin the slOt. theSe factORS may resuLt in a gradual decrease in hEIght of tHe sLot coNtenTs, and if thE slOt closUre SYstem iS rigid Then tHe ForCE PlaceD ON tHe sLoT contents bY THe sLot clOsUre wIll decrEase as the height of tHE slOt contents decReaSes. THE MaChiNEs PResEnTLy uSED may carry considErable currEnT In The conductORs aNd The elecTromagnEtic fORces can Be quite laRge and of a ViBratIONal Nature, for eXample, at Two times oPEratiNG fRequeNcy. it is veRy ImpOrtanT that tHE reStraiNing foRcEs shouLd not DeCrease beLow a certain level. If the reStrainIng foRceS decrease EnoUGh tO permit anY vibRation, the cOntInuOus viBraTIonal ForcES wIll EVentuAlly CUase a majoR PrOblEM.
in Order that thE REStrAininG foRCes be mAintAined, it is known to iNTroduce some forM of sPRIng BetWEen tHe Slot closure memBer AnD THe coductOrS. These sprinGs have beEn MAde in VariouS forms And kindS. wHeN A sprinG is uSed Between a sLot ClOSure memBeR aND the coNducToRs, therE is usuALly sOME arrangement to coMpresS OR defoRM thE spriNg So
--Jaun et al issued Feb. 4 , 1964. In  this  pa ten ta sl ot b ridging member of s oft iron is inserted i nto t he slot op ening  with t h ee d ges  o fthe  s l ot  brid gin g membe r extendin g i nt o notches on ei ther sideofthe slot ope nin g, and  t hen the s lot  brid ging m e mber i s distort ed or def o rmed to c au se t he edges to press mo r e firmly intothe no tc h es a ndhol d the slot  b ridgi n g membe r  m o r e  fi r mly in place.  This slotb rid ging m em ber of sof t iro nw asintended pr imar ily to re gulari z e the f l ux patt ern an d i t a ppea r sth atth e  re t ai nin g  of  the con du ct ors w as n o t a  maj orcons idera tion.
At thepre sent tim e, co nduct orsus ed in  large r dyn am oelectric machi nesusually h ave  a  ja ck et fo r med of  athe rmosett ing res i nou sm a t er ial impregnating a  p o r ou s materi al, an d  t hi s  is cure dtoa ha r d  stat e, f o rm ing an i nsulat i ng  j acket a ro und th econ duc tor.I n ad dition  there m ay be portions of th e  jacket coate d  w i t ha  par tia lly conduct inge last omer to  re d uce t he po ss i bi l ity of voids develo pi ng bet weenthe conductor s and thes l o t walls.  The el i mination or re ducti on of void s  tends t o eli minate o r reducec o rona pro ble ms.  Co ndu c t or  arrangements o f th is  type a redescrib edinCan adi an  Pat. No.  1,016,5 86 -- Lo ns eth  et a l , issued  A ug.  3 0,1977t o Cana dianGene ra lE lec tric Co m pa n y  Lim it ed .
Wh enco nduct or a r ran gements  as descr ibe d  inth eaforeme ntioned Lonse th  et al pat en t a re use d ,  they ar e firmly wedged into th e ir slot s t o res trai n them ag ain st mov eme n t. How ever,withti me, t he po s s ib ili ty  of decrea s e d r estra in ingforceshas been a problem .  Re peated therma l c ycli n g  m ayr es u ltin som e "bedding in" at  the highco n ta ct pointsa ndso me cree p or fl owing of thematerials  within t he  slo t .  Th ese factor s may re sult in a gradu a ldecre ase  in he ig htof th e slot con tents , andif  the s lot c lo sure sys tem is rigid then the f orce p laced  on  the slot  co n ten ts by the  slo t closurewil l d ecrea sea s the  hei g ht  of the s lotc ontents d e cr eas e s .The machine s p res ently  us e d maycarr y considerable cu r rent in the co nduc t o rsand theel ectromagneticfor ce s can be q ui te large an d of a v ib r ation al nat ure, f or exam p l e, at two  tim esoperating  fr eq u ency. I tis very i mpor ta nt tha t ther estr a i ning forces shou ld no t decre a sebelow  a  certai n  lev el. If the  restrainin g forc es d ecrea se enou gh  to pe rmi tany vibrat i on, the c ontin uous vi br atio nal  force s wi l l  even tual ly  cu ase a maj o r  p r ob le m .
I n or der t ha t th e restrai n ing forc esb e maint ai ned , it isk no w n  to introd uce  some f orm of spr i ng b e tw e en th e slot  closu re memb e r a nd  the co duc t o rs. These  springsh ave  b eenmade inva riou sfor ms  and kinds. Whe n a spri ng is us e d  betwe ena  slo t  closu re  member andthe c on d uctors, t her e is us u all y s ome  arr ang emen t  to compress or deform t he s pring so
--Jaun et_al issued_Feb. 4, 1964. In_this patent_a_slot bridging_member_of soft iron_is inserted into_the slot opening with_the edges of_the_slot bridging member extending into notches on either side of the slot opening, and_then_the slot_bridging_member_is distorted or deformed to_cause the edges to press_more firmly_into the notches and hold the slot bridging_member_more firmly in_place. This slot bridging member of soft iron was_intended primarily to regularize the flux_pattern and it_appears_that_the retaining of the_conductors was not a major consideration.
At_the present time, conductors used in_larger dynamoelectric machines usually have a jacket_formed of a thermosetting resinous material_impregnating a porous material, and_this is_cured to a hard state,_forming an insulating_jacket around_the conductor. In_addition there may be portions of_the jacket coated_with a partially conducting elastomer to_reduce_the possibility of_voids_developing_between the_conductors and the_slot_walls. The_elimination_or reduction of voids tends to_eliminate_or reduce corona problems. Conductor arrangements of_this type are described_in_Canadian Pat. No. 1,016,586--Lonseth_et al, issued Aug. 30,_1977 to Canadian General Electric Company_Limited.
When conductor_arrangements as_described in the aforementioned Lonseth et al patent are used, they_are firmly wedged into their slots_to restrain them against_movement. However,_with_time, the possibility_of_decreased restraining_forces has been a problem. Repeated thermal_cycling may_result in some "bedding in" at_the high contact points_and_some creep or flowing of the_materials within the slot. These factors_may result in a gradual_decrease_in_height of the slot contents,_and if the slot closure system_is rigid then_the force placed on the slot contents_by_the slot closure will decrease as_the_height of the slot contents decreases._The_machines_presently used may carry considerable_current in the conductors and the_electromagnetic forces can be quite large and of a_vibrational nature, for_example, at two times operating_frequency._It_is very important that the restraining forces should not decrease_below a_certain level. If_the restraining forces decrease enough to permit any vibration, the_continuous vibrational forces will eventually cuase a_major problem.
In order that the restraining forces be maintained, it is_known to introduce some form of spring between_the slot closure member and the coductors._These springs have been_made_in various forms and kinds. When a_spring_is_used_between a slot_closure member and_the conductors, there_is usually_some arrangement to_compress or_deform the spring_so