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Oct. 1, 1946. ' - w. ci. wEANl-:R ' POWER coUPLING MEANSv yFiled may 9, 1945 Tij. _/.. - A l 2,403,497 I ` f 'r sheets-.snaai` 1 Oct. >1, 19m.l 2,408,497 w. c. wE'ANER POWER CQUPL‘ING' MEANS v '7 Sheeìts-Sheet 2 'Filed May .9, 1945 «M_ mn [gw MVÜmyT_wm M _ M_ v_.. H NC wBM ` Oct 1,1946- ' u ' w. c. wEANER ' POWER coUPLING - MEANS Filed-May 9, 1945 5” zo" _. ~ 'I 42,408,497 - ' ' ‘ 7 sheets-sheet :5 ~ j ° ' 'ML `rm? Ö h/FANE/g ' 5' grae/vin I' ` Oct. l, 1946. W'. C. WEANER _2,408,497 POWER COUPLIÍQNG` MEANS Filedl Ma'y 9, -1945 sa, ¿8 7 Sheets-Sheet 4 l _Z/-Wí/vroß, M1. me C v MME/ß Oct. 1,4 1946f ‘ _ - w. c. wEANl-:R ’ POWER“ coUPL-ING MEANS Filed May 9, 1945 - ' 2,408,497 ' , I v l 7 s?eetsfsheet 5 „\ ` M4715@ C WFM/È@ _Er M ¿M15/W, (n In " ß œ ' - ` ì ` ‘ @Toe/vin Oct. 1, 1946. - w. c. wl-:ANER l PQwER ' couPLINQ-MEANS Filed May 9, 1945 K - 2,408,497 ' l fr sheets-sheet 7 4544713@ 2,408,497 Vintended Oct. 1,1946 >¿uwritrae STATES» PATENT; foFFlcE „ l _ j :l , 2,408,49'1 _ “ rowERcoUrLrNG MEANS n Walter Wcancr, Muncie, Ind. _- ¿Application May 9,-1945,"Sverial No.'592,9i)4` 2 , , Fig. 11,v a similar vsectional view_on the» line 8‘--8 in Fig.§1 showing the mechanical transmis-» This invention relates to a hydraulic power transmission device in conjunction with a‘ista- ~ sion parts shifted‘to a reverse direction _driv_e;_ - ' bilizer having one particular application as a ` Fig.` 12, a vertical transverse section >ori-the an auto tion embodies a number of decidedadvantages Fig.` 13, a view in end side elevation of one side of the driving impeller with'fragments broken including a positive mechanical interconnection Y away to disclose under details; for starting the vehicle into motion under suchv ~ Fig. 14, adetail in vsection on the line-»Ill-fll hydraulic coupling conditions Awhere a simple would fail to do so, or where it is desirabl‘e‘to di-vk rectly interconnect .the engine with the drive'. inFig. 13; ‘ , ’ ~ ' 'l Fig. 15, a detail in section on the line',` I'5-'--l5 inFig. 13; wheels should it be desired topush the vehicle’l in> order to start the power engine; the stabilizing ` 'f " Fig; 16, a view in front elevation of the driven vturbine wheel; Fig. 17, afview in elevation 4from ¿the concave side cia _bucket or blade of lthe turbine wheel; of Avarious parts to permit'gear'speed‘lor direction changes and toV reducetorsional vibration; and to maintain‘a coupling between the'driving and and driven members throughout yan extremely wide range of speedsA under variable power loads. ' Fig. 18, a view in outer end elevation offthe vane.l A further importa-nt advantage’of the inven# Like characters of reference indicate likerparts‘ tion is found in the particular mechanicalv con struction of the driving -impeller andî driven tür throughout the several views in the drawings. ~ bine wheel of the coupling providing not only for very eiiective couplingtherebetween but also p‘er‘ mitting easy -construction and assembly of those' by the numeral 20 to consist-of two members '2l and 22 bolted one to the other'through annular . parts. l ‘ These y , f I form' a 'driving' impeller generally designated g. _25. ñanges 23 and 24 about a mid-plane between the two members'2l and 22 normal to the raxis of ro to Figs. 2 land "13 primarily," Referring theî‘impeller member 2l 'has a ycentral l»planar and manyother objects' and advantages' tation. Vof the invention will become apparent >'to 'those` versedY in the art in the following description of one particular` form of the invention as illustrated ' in the accompanying drawings, in which ' outer wall 25 also- normal to theY axis of rota-tion 30, ofthe memberl 2l. Í From thetouter circumfer-i‘ ential portion of this wall 25the wall bulgesout'-v wardlyzby'a portion 42. therefrom to curve around' Fig. Lis a view in top plan and partial trans-> and’back inwardly to-terminate in the ilange 23. spaced. `apart circumrerentially around theouter bulgingïperipheral portion of vthe member' on the line 2-2 in Fig. 1; 35 2|~ are aplurality of radially positioned vanes' Fig. 3, a viewïin vertical transverse sectionY on verse Fig.section; 2, a >View in vertical longitudinal 'section the line 3-3 in Fig. 2; 26 fixed to' themember 2l vto have a gradually increasing elevation in respect to the wall of the 'member 2l from under the ñange'23 to the junc ture’of the bulge portionóf the member 2l with the planar wall 25:VV In each instance, from this part of the Vane 26,l the vane continuesin a iixed` - ~ Fig. 4, a view on an enlarged scale in detailî and in vertical longitudinal section of the positive y interlocking mechanism between the driving im" peller and the driven tur ine wheel;l ' Fig. 5, a transverse section> elevational dimension 'non-radially, to ‘be `arcuate " in Fig. ; to curveconvexly forwardly in the f' direction’of Fig. 6, al vertical transverse section on the lineï "rotation 'from the plane ofthe straight portion ofv 5-6 in Fig. 4; Fig. '1, a detail in side' elevation 0f the dogamrn 45 the vane, to terminate by an end 21‘spaced from~ 28 È'Whîch turns inwardly from dog receiving rings; _ f _ the central. hubk 4 _ Y ` Fig. S, a vertical transverse section on the line; Fig. 9, a view in vertical longitudinal sectionA on the line 9-#9 in Fig. 1 showing a 'direct drive connection between the fluid drive through amer?. ` chanical transmission to a driven shaft; _ Fig. 10, a sectional-view Aon the same lineibllt with »the _mechanical transmission,y _drive disen-v » ' gagedfromtheñuiddrive; f ‘ ' . y g - ' ' thewall 25.~_ l . . , _ K ì Thenfacross the arcuate portions of the v-anes by Yits . outer 2,6 is -a circular plate 29 terminating the radial andl peripheraledge at the junctures of arcuate portions ,of thevanesß.; 'I_'hiSplate-ZS is provided ywith- a central annular'opening ¿3B _to provideïan entrance through that opening-and around the hub v2li radially «into the Íspaces be'-V 2,408,497 3 4 tween the inner -terminal ends of the vanes 2S. As indicated in Fig. 13, the adjacent vanes 26 of the opposing plates 2S and 3| which are radial ly exposed beyond the plates 29 and 3B so that there may be but very little slippage of fluid around those cup margins and the opposing edges of the vanes. As indicated in Fig. 2, the plates 29 and 35 terminate in close proximity to the terminate by inner closely spaced apart ends and diverge therefrom throughout the arcuate lengths and between the radially outwardly disposed parts. In the same manner the member 22 is formed to carry vanes 3| of the same dimensions and configurations as -those of the varies 25, the two sets of vanes 26 and 3| being one left hand in respect to a righ-t hand of the other in refer margins of the two cups 46 and 41 in each in stance and then the attaching legs 48 and 49 curve inwardly rapidly .to the plate 39. Preferably an overall housing 5| encloses the driving impeller and the driven turbine wheel _assembled as so >far described. This housing 5| 'rotatably carries the driving shaft 33 through ence to the arcuate inwardly extending portions of the respective vanes. In other words, the arcu ate portions of the vanes 3| have their convex sides directed in the intended direction of r0ta~ tion of the driving impeller as a whole.v , ' any suitable bearing means 52. On the rear side The member 22 has a central hub 32 which is l5_ of the housing 5| is rotatably mounted a hub 53 rotatably carried vby a suitable bearing 54 mounted mounted on a driving shaft 33 to have a mechani in the housing 5|. The shaft 49 which is driven y by the `turbine wheel plate 39 is drivingly inter connected »and supported by the hub 53 by any cal driving connection therebetween,_ herein shown as by means of a spline nt. The inner terminal ends 34 of the varies 3| are spaced from the hub 32 and are inclined to slope upwardly and suitable means, herein shown as by means of a splinedñtff. outwardly in vrespect tothe inner end of the hub 32. In this respect the ends 21 of the vanes 26 slope likewise from the wall 25 in a diverging manner toward the plate 29 from the circumfer-'` ential face of the hub 28. The'arcuate portions of the vanes 3| are enclosed between the planar wall 35 of the member 22 and a circular plate 36 being a counter-part of the plate 29 employed in conjunction with the vanes 26. The plates. 29 and 35 are spaced apart, one parallelwith the 30 other. ‘ Between the hubs 28 and 32 are mounted hub members 31 and 38 between which-is clamped a ' .ï :i L ' -» The driving impeller thus driven by the shaft 33 is free to revolve around the centrally en closed driven turbine wheel. Means are pro videdv for positive mechanical interlocking the iinpellerl and the _turbine Wheel one with the other whereby there isa direct mechanical drive from thegshaft 33 through various interconnecting members to the driven shaft 49. This means is primarily shown-in Figs.- 3-7. Around the inner face of Athe hub 32 is mounted a ring-55 to be ñxed theretofin any suitable manner. This ring 55 is" notched out to receive a plurality of dogs turbine wheel plate 39 to be centrally positioned thereby between the vane plates 29 and 36. The 56, herein shown as three in number. Each dog is normally lfree to'revolve about a central, radial hub members 31 and 33 are fixed on a shai‘tv 4|!- axis of a suitable pin, herein shown as constitut ing a cap screw 51. 1 The Vdog v`56 is mounted in which axially and rotatably extends through the each- instance to have eitherv end thereof rocked hub 28. The turbine wheel plate 39 is positioned to revolve in the space between the vane plates 40 beyond the outer plane of the »ring 55 which is normal to the axis of the hub 32. j ç 29 and 36 inalignment with an annular plate 4| To control the rocking of these dogs 55, each that is clamped across the outer opposing yends one is engaged by a rod 58 which is slidingly of the vanes 26 and 3|, the plate 4| being gripped mounted" in the hub32 to permit longitudinal between the members 2| and 22. The peripheral shifting thereof.~ Each shaft 59 passes through edge of the turbine wheel plate 39 is in approxi# mate running nt with .the inner edge portion of le. .un a -well 59, Fig. a, provided in the hub 32 to have the annular plate 4|. ` l " a compression spring Se on one side of a trans verse abutment 5|v iixed to the rod 58 substan tially central of thegwell 5i), and a like compres plurality of radial slots 43 aroundits peripheralsion spring E2 on the lother side of the abutment margin. Into each' of these slots 43` is slipped the web 44 of a bucket 45, Fig. 16. Each bucket 45, 50 6|. A nut 53 ¿screw-threadedly enters the hub 32 co-axially of the rod .55 and the well 69 not Figs. 16-18, is in effect a pair of cups 46 and 41, only to seal that well but also to provide means one on each side of the web 44 and extending for adjusting the compression of the two springs around therefrom in a leadingdirection of rota 69 and 62. The position Vof the abutment 6| tion of the plate 39. Each cup portion 46 and 41 has an attaching leg 48 and 49 respectively ex 55 along the red 5S is >made to be such that the rod normally holds the dog 55 inv each instance to tending along the respective faces of the plate 39 have vboth of- its engaging ends within the ring and the bucket as a whole is securedto the plate 55, at least so that there is'no projecting end by passing a bolt 59 through both of those legs beyond the face of that ring 55.- Each’ of the and the intervening plate 39. Preferably, these .cups 46 and 41’have a maximum depth adjacent 60 rods 58 is carried on forwardly of the hub 32 to be interengaged by a shifting ring 64. their outer peripheral ends in respect to the pe The ring 64 is carried within an extension of riphery of the plate 39, and from that maximum The turbine wheel plate 39 is provided with a depth the cups slope with'a’gradually decreasing depth to fade out on the radial line of the trail the housing 5| and is-engaged by a shifting fork 65 rockably carried by the housing andv formed 65 to have- an operating lever 56 externally 'of the housing. By rocking the lever 66 forwardly; the rods 58 are pushed rearwardly to shift thegdogs to positions as indicated in 7. Shifting the ing side of the web 44 and thev legs 43 andv 49. In the presentA form of the invention, there are an equal number of buckets 45 in comparison to the number of sets of va-nes 26 and_'3|,` that is, lever 95 rearwardly will cause the opposite end of with l16 buckets on the plate 39, there are 16 varies 25 and 16 vanes 3 |.y This number is given simply` 70v the dog >5t in each instance to' be exposed out as an example without any limitation oftheinè' vention _being thereby imposed'. The peripheral margins o-f the cups 46 and 41 have a configura'-V tion to conform closely .to the arcuate inner edges side of the'ring 55 to the rear thereof. ‘ On the'hub 33 is 'provided a plurality of op posing 'abutments-Y 51 and Eli vagainst which the opposite ends of the deg 55 maybe selectively en 75 gaged as determined by the direction ofv rocking 2,403,497 iinalÄ-d'rîvefshaft 15.5 In the form herein shown thisconnection consists of a sleeve 85 longitudi nally shiftable along the shaft 13 and 'drivingly connected therewith by any suitable means, such of the lever r66. These abutmentslìTfand _|58V in the present -form _of the invention are herein shown asbeing provided ona ring 69Y secured to _ Y 3s. » the hub> y it-_isfto be seenv that thedriv Thus ing impeller and thel driven turbine wheel may be >interlocked in either direction of rotation in respect to the >axis of the shaft 33. The pro vision for theinterlocking in both >directions'of rotationlis made toA provide not Vonly for inter locking the two members together vwhen both are driven in unison from theshaft 33, but' also e as '_by rthe splines 86; 'a gear wheel B1 fixed on the rear end of the» sleeve 35; a gear wheel 88 gear 89 into which may be a havingv an internal the gear wheel 81.; and means Vvmeshed the teeth of for shifting the> sleeve 85 to carry thewheel 81 10 into and out ofv mesh with` those >teeth 89. A springv |3|l-normally maintains the meshed posi >to interlock -thosejtwo -rnembersv together ¿when tion. f ~ ' ~ rThis means for shifting the sleeveV 65 in the present showing consists of a grooved wheel 99 the shaft 3-3 4is drivenfrorh‘` _theshaft 40. as the yfixed to the'v sleeve 85 and interengaged byv the case rwould bewhen the vehicle is being pushed to turn` over'the engine'V that'is interconnected shifter fork 9| which is rockably carried trans versely of the transmission housing 12. The pri mary purpose for providing this disengaging con to the shaft 33, r‘for engine starting purposes-in case v'they usual storage battery kwould be unable to supply the necessary current as frequently' happens in cold weather or when the battery is necting means between ther shaft "i3 and the shaft 15 is to permit a reverse direction of drive in such a state of discharge as to be inoperable. 20 between those two shafts. A standard form of achieving this reverse drive is shown herein where a jack shaftv 92 is longitudinally mounted within The ring 69 preferably has the inclined surfaces 'lûjand 1| respectively sloping inwardly of the ring 69 toward the respective abutments `|51 and B8 to facilitate the sliding entrances thereagainst of the ends 0f the` dog ‘5S to .permit them to Vcome 25 intoV engagement with the abutments as the case may be. L . s v . , From the rear of lthe housing 5! extends a transmission housing 12 wherein suitable change- ' have a spur vgear 93 in con-` the housing 12 to stant mesh with the external teeth` 34 of the gear is mounted onv the forward end 0f the sleeve 85. By vsuitable rocking of the fork 9|, the sleeve 85 may be shifted forwardly along the shaft 13y to disengage the teeth of the wheel 81 from the teeth 89, and to engage the teethA of the wheel 96 with the teeth of the'wh'eel S5 so that the drive then would be between the ., shaft 13 speed gearing may be carried; A shaft 13 has >its frontend journaled axially in the hub >53 to be rotatable in respect tofthat’hub.y This v lshaft ‘ 13 by its vrear end in turn carries the pilot 14 of the ñnalA drive shaft 15, a length of'which ex tends rearwardly outside- of the housing 12 and is rotatably supported by any suitable. bearing, through the two gears 95 and 95, the shaft 92 and the two'gears 93 and 88 which is fixed to theshaft 15. It is obvious that other change-speed gearing such as the ball bearing 16 carried by the rear housing end. ’Preferablyn the shaft 13 is rotat ably Silppol‘ted _by abearing 111carried inside 0f the housing 1.2 spaced substantially inter mediate of theends of the shaft 13.? ’ ' Il O ' ‘ lA sleeve'iß is `mounted on the forward end of the `shaft 13 tol beshiftable therealong 1out to be `revolved therewith, the sleeve 18 vbeing herein shown as interconnected with the shaft 13 by means of longitudinallyV aligned splines. Fixed to the front end ofthe sleeve 18 is a toothed wheel 19 so formed that' its teeth willintermesh with the internal teeth 88 formed ’within the hub 53 to afford> a ¿driving - connection therewith, ' the'whe‘a 19 being shown‘e'ngaged with thehun teeth 39 in Figs. l, 2„9, and ll, and> disengaged , therefrom in Fig. 10. -of the sleeve 12|V is fixed a On the rear end n grooved shifting >_wheel 8| which is engaged by= a shifting fork 82 lrockablyr carried transversely of the transmission housing 12. By rocking the shifted longitudi.> fork 82, the'sleeve 18 may be ' the forward end of the shaft wheel 88. a Toward '92 is fixed a spur gear 95 to have its teeth in the spur gear 95 which ' the path of the teeth of shaft 13 to mesh the wheel 19 may be incorporated vwithin the transmission housing 12 as may be desired, but such gearing does not specifically enter into my invention, -and itA is no-t necessaryy to its operation and therefore is not shown. _ However, I do provide what I ~ term` a stabilizer which is in the nature . of a clutch although no direct drive is taken therethrough. The purpose of this stabilizer is not only toi dampen out'vibrations, butalso to control the `relative speeds between the shafts 15,13,Y and 45 to permit shifting from a neutral or no-'drive arrangement to a direct driving connection or to permit shifting of the various members to the reverse drive connection. In the present showing, I mount a clutch plate 91 on the .hub -53 to have a contact face in a plane normal to the V.axis of the shaft 13. Lon `gitudinally sliding on the outside of the sleeve ‘§18V is a‘second sleeve 93 which is drivingly con nected thereto in respect to rotary movement by any suitable means, such as through splines. On shift the g' 60 with» the' teeth 80 in thehub ’53 orto the forwardend of- the sleeve k98 Vis mounted a sleeve'18 in reverse direction to disengage the f wheel- Vr19 from the'` teethgilû. Normally', the sleeve 18 isA urged to'itsV forward position by means ofv a compression spring'83'helically sur vdisc 99, herein shown as on a hub It() fixed to the sleeve 93. The Vperipheral margin of this rounding the shaft -13 to'have its ends bearing between the web 84 in the housing ‘12 and the disc 99 is Vprovided with a plurality of spaced apart notches lill across which engage slid _ingly dogs |92 that extend rearwardly -fromva rear end of the sleeve 19. This spring 93 there fore tends to maintain> the ?wheel Y1.9 in driving , essentially of an annular ring having a forward engagement with the hub 53, and only by the ì y' fioating plate |93. This floating plate Vconsists Y planar face to which is preferablyattached'a rocking of the fork"~ 82 to cause the sleeve 18 to v»'70- friction ring |94. The plate lil-3 is yieldingly ex travel rearwardly- to compress kthat spring 83 ’ tended forwardly from the disc 9S by means of may‘the drive between the wheel 19 and the hub ` compression springs |55 bearing 4between that plate and disc and surrounding cap screws |96 53 be interrupted. A disengaging drive connection is` provided ~ that slidingly extend rfrom thef rear side »andA between the'rear end of theshaft 13 -and the 7 2,408,497 through th'e disc Se to screw-threadedly engage the forward plate l Q3. Fixed to the rear end of the sleeve 98 is a sleeve shifting groo-ved wheel` lâ? with which engages the shifting fork ltd that is transversely mounted across the housing 'i2 and from which extends externally of the housing 'l2 by a shaft êâiâ carrying an operating lever H9. In order 8 have a `finger enteringl into the slot .||8. vFrom the shifting fork 9| extends a lever |2| which has a finger entering the slot H9. These slots are formed to rock the two shifting forks-82 and el in the desired degree oftravel vupon rocking the lever ||'|. As indicated in Fig. 10, the cam || 5 is rocked to a “neutral” position which is that position where the slot || 8 has guided the to maintain the stabilizer thus described in a ringer of the lever |20 to swing the shifting fork released or inoperative position, a compression S2 rearwardly to withdraw the gear wheel 'I9 from spring ill surrounds the sleeve 93 to bear be the hub 53 as above indicated. At the same time, tween the wheel ’FS and the end of the sleeve 98 the lever lf2-i has not been rocked-and therefore tending to urge the sleeve S8 rearwardly, and the sleeve 85 has been leftin its normal rear a second compression spring H2 surrounds the sleeve Q3 to bear between a transverse web- H3 -15 wardly carried position as indicated in Figs. 1, .2 and 9 and 10. This is made possible by reason of of the housing l2 and the front side of theshift the fact that the upper portion of the slot H9 ing wheel |57. These two springs lil and H2 is arcuate and has a radius of curvature center are so designed that th'ey will normally hold the ing on the axis of the shaft H5. The central friction ring let spaced from the plate 9'! as in portion of the slot IIS likewise has a curvature dicatedin Fig. 2. ' of a common radius centered on the same axis. Assuming as one application of the invention The ends of the slot H8 however deviateout to be employed as a coupling between the en wardly at both ends to permit travel in those gine and the rear wheel drive shaft in an auto portions of the lever |26. The lower end ofthe mobile, the engine (not shown) will be directly slot lig is carried inwardly in respect to the .axis coupled to the shaft 33 so that at all times when of the shaft | | 6 to swing the arm l 2i accordingly. the engine is operating, the driving impeller 2@ Now, assuming that it is desired to intercon will be turning, and in fact will serve in the na nect the shaft 'i5 with the revolving hub 5t, the ture of a ñy wheel. A suitable liquid having shaft | i6 may be rocked by means of the lever the characteristics commonly found for such il? in a clockwise direction, Fig. 9, to cause the purposes is placed within the impeller 2d which ‘ shifting fork 82 to be rocked also in a clockwise is then sealed vagainst leakage o-f the liquid direction to shift the sleeve '.53 forwardly aided therefrom. The ii‘npeller, of course, is only parbythe spring 83 to bring the wheel 'I9 into mesh tialiy- filled. By reason of the fluid being within and full seating condition within the hub 53. In the impeller it will tend to be thrown to the order to prevent noise and securey ease of this outer bulged peripheral portion thereof along operation, the shifting fork |08 may be initially both sets of varies 25 and 3i, and by reason of rocked in a clockwise direction through the lever the shape of those blades throughout their HQ to shift the plate 93 forwardly and gently lengths and in the bulged portion of the im press the ring lef-l against the plate 97, to set up peller, the fluid will be tended to be forced into the concave portions of the buckets and 4l' 40 a sliding frictional engagement therebetween tending to bring the speed of the shaft 73 into to canse in eiîect an interlocking through the synchronism with the speed of the hub 53. fluid between the driving impeller 29 and the With these operations completed, the shifting driven turbine wheel which is composed of the fork 52 is left in the position shown .in Fig. 9. turbine wheel plate 3@ and the buckets 45 car» Now it be desired to bring the drive back ried thereon. Under some conditions there will, i into should the neutral position, the cam ||5 would of course, be some slippage between those two again be shifted back to the position shown in elements, that is, one may turn at a, diiferent Fig. 10 aided if desired by operation of the stabi speed from the other, depending upon the loads lizer to permit easy withdrawal of the gear wheel and driving operations. At extremely llow 'i9 from the hub 53. l ’ . speeds of the engine, of course, there may be 50 To bring the various members into the reverse no driving power developed as between those -two direction drive, the cam | |5 is rocked counter elements. clockwise to the position shown in Fig. 11, in The hub turns with the driven turbine wheel going to which position, the shifter fork 82 has and with the parts in the positions indicated in been permitted to rock from the central portion Fig. 2, the shaft l5 will be likewise >turned at subof the cam slot | I8 to swing suñicîently to permit stantialiy the same speed. This shaft ïä connects the gear wheel 19 to return to its interengagement in the usual manner (not shown) with the drive with the hub 53, and the sleeve S5 has been shifted shaft to the rear axle of the automobile. Nor forwardly along the shaft 'I3 to bring the gear mally, the drive thus formed is sufficient for most conditions of moving the automobile. To inter 60 8l out of mesh with the gear wheel 88, and fur ther to bring the gear 95 into mesh with the rupt that drive to permit the car to come to a stop, gear 9,5. the shifting fork 82 is rocked to pull the gear This takes care of normal driving operations. wheel ‘i9 out -of mesh with the teeth provided in Sometimes it may happen that a positive Ine the hub 53 as indicated in Fig. l0. In order to simplify the control of the shifting of this wheel 65 chanical drive is desirable as between the shaft 'i5 and the driven shaft 33 as above indicated, 'i9 and also of the reverse gears, I provide a shift for example, when the car is to be pushed in order ing cam |55 which is fixed on a shaft H5 trans to start the engine. Then the shifter fork 65 is versely extending across and within the trans rocked as previously described to bring the dogs mission housing 'i2 intermediate the shifting forks S2 and 9i. One end of the shaft H55 extends 70 E6 into driving connection with the abutments laterally from the transmission housing ’l2 to carry an externally mounted operating lever lil. The cam i l5 carries cam slots liti and HS in 6'! 0r iiß depending upon which way vthe car is being pushed, that is, from the front or the rear, While I have herein shown in more or less dia grammatic manner one particular form of the the respective fore and aft end portions thereof. invention, I have made no attempt to show a From the shifting fork 82 extends a lever |20 to 75 lubricating system for the various parts externally ¿entreno? Y incommon therewithfand a plurality of buckets mounted Aarounvdjthe .peripheral portion of said of the .transmissionjhöusing.12 _nor anexact mounting of >be`a'rin"g`s'_throughout the structure, 'disc having> a projected configuration matching since. such-'features donot per se enter into the invention and'. may be.v changed vunder different Vapproximately that of said Aovateopeningsto per applications.' Y Mechanicalßchanges in the con struction may be employed l withouty 'departing ' being concave on their trailing sides. , invention, Í and , I V_therefore ~fromn the spirit of the limitedY to Ythat lprecise ` form do not desire to be" lmit relative travel, therethrough, said `buckets " 65 A power coupling comprising a drivingV im peller having a 'pair of longitudinally opposing housing members'joined together about a median plane therebetween, an annular flange extending Í radially inwardly from said junction, each of said v beyond the limitations. as may bey imposedl by ’the following claims. ` ` ' " ' ’ j , I claim: y l. Apower coupling comprising aA driving :im , peller ; a driven turbine wheel; a driven shaft; members being bulged outwardly one from the other in outer portions thereof, vanes extending convexly in respect to direction of member rota ingly interconnecting 'said wheel and said shaft; ing portions to said flange, said vanes of the two Vmembers beingV in sets, one vane directly opposed to another to leave a radial slot-like opening be mechanical means releasably interconnecting said tion from -inner central portions to said bulge ' wheel with said shaft; and stabilizer means yield' 1,5 andv thence by radial directions across said bulg said mechanical -means comprising Yinterlockable abutments carried byffeach of Y.said wheel fand shaft; and means> shiftable longitudinally of said tween the’convex lengths- and an approximate shaft to engage and disengage said abutments’; 20 -ovate opening between the radial lengths' of the said _shiftable means being independent in oper vanes; and a driven wheel comprising a disc'in ation fromrthfat of said stabilizer means. said Yslot opening rotatable normally independ ' 2. A power coupling comprising a drivingV vim peller; a driven turbine wheel; a driven shaft; Y mechanical A 4 ¿releasably means-î> interconnecting said wheel with said shaft; and stabilizer means ently of said impeller on an axis in common there with,:and a plurality of buckets mounted around 25' ¿the peripheralportionof said disc having yieldingly interconnecting said wheel and said a pro jected configuration matching approximately that of said ovate openings to permit relative travel therethrough, said buckets being concave on their trailing sides; each of said buckets being locking means comprising a shiftable dog on one 30 divided into two cups, one on each side of said of the elements comprising the impeller and wheel and a dog abutment on the other; means '7. A powercoupling comprising a driving im mounting said dog to permit it to be rocked se peller having a pair of longitudinally opposing lectively to oppose rotation of the abutment car 35 housing members joined together about a median plane therebetween, an annular flange extending rying element. 3. A power coupling comprising a driving im radially inwardly from said junction, each of peller; a driven turbine wheel; a driven shaft; said members being bulged outwardly .one from mechanical means releasably interconnecting said the other in outer portions thereof, vanes ex wheel with said shaft; and stabilizer means yield tending convexly in respect to direction of mem ingly interconnecting said wheel and said shaft; ber rotation from inner central portions to said a reverse drive means normally disconnected from bulge and thence by radial directions across said said shaft; and commonly actuated means for bulging portions to said flange, said vanes of the releasing said mechanical means and connecting two members being in sets, one vane directly said reverse drive means with said shaft. opposed to another to leave a radial slot-like shaft; and means mechanically interlocking said impeller and said wheel; said mechanical inter disc. 4. A power coupling comprising a driving im peller; a driven turbine wheel; a driven shaft;` mechanical~ means releasably interconnecting said wheel with said shaft; and stabilizer means Y opening ‘ . between the convex lengths and an ap proximate ovate opening between the radial lengths of the vanes; and a driven wheel com prising a'disc in said slot opening rotatable nor yieldingly interconnecting said wheel and said 50 mally independently of said impeller on an axis shaft; and means mechanically interlocking said . in common therewith, and a plurality of buckets impeller and said wheel; said impeller and said each having hubs rotatably on a common ' wheel axis; and said mechanical interlocking means mounted around the peripheral portion of said- disc having a projected configuration matching approximately that of said ovate openings to per comprising a dog carried by one hub, an abut mit relative travel therethrough, said buckets ment carried by the other hub, means for rock 55 being concave on their trailing sides; said disc ing the dog into the path of said abutment, and having a slot entering from its peripheral edge, means normally holding the dog out of said path. and each of said buckets having a web engaging 5. A power coupling comprising a driving im across said slot, to have portions of the bucket peller having a pair of longitudinally opposing extend symmetrically from each side of the housing members joined together about a median 60 disc. y8. A power coupling comprising a driving im plane therebetween, an annular flange extend ing radially inwardly from said junction, each of peller having a pair of longitudinally opposing said members being bulged outwardly one from housing members joined together about a median the other in outer portions thereof, vanes ex 65 plane therebetween, an annular flange extending tending convexly in respect to direction of mem radially inwardly from said junction, each of said members being bulged outwardly one from ber rotation from inner central portions to said bulge and thence by radial directions across said the other in outer portions thereof; vanes extend ing »convexly in respect to direction of member bulging portions to said flange, said vanes of the two members being in sets, one vane directly ‘ 70 rotation from inner central portions to said bulge opposed to another to leave a radial slot-like and thence by radial directions across said bulg opening between the convex lengths and an ap ing portions to said flange, said vanes of the two proximate ovate opening ybetween the radial members being in sets, one vane directly opposed lengths of the vanes; and a driven wheel com to another to leave a radial slot~like opening be prising a disc in said slot opening rotatable nor tween the convex lengths and an approximate mally independently of said impeller on an axis "caesaer » 11 l . ovate opening between the' radial lengths of the ñ'rst sleeve 'and drivingly connected therewith; a varies; and a driven wheel comprising afdisc in >said slot opening rotatable normally independ ently oi said impeller on an axis in common there with, and a plurality of buckets mounted around the peripheral portion of said disc having a pro D jected configuration matching approximately that of said ovate openings to permit relative travel therethrough, said buckets being' concave on their trailing sides; said disc having a. slot entering from its peripheral edge, 'and each of said buckets having a web engaging 'across said slot, to have portions of the bucket extend sym metrically from each side of the disc; said varies terminating at their inner ends short of their axis of rotation to provide 'passageways circum ferentially across and entering between those ends. ' 9. The combination with fluid drive means in clu‘ding a driving impeller and a driven turbine 4 wheel; 'of abutments carried by the Wheel; a -driven shaft axially directed theretoward; a sleeve longitudinally shiftable Voi the shaft and drivingly connected therewith; a toothed member ñxed to the sleeve to >enga-ge with said abutments; 2.5 a second sleeve, slidably telescoping with said clutch member driven by said Wheel; a second clutch member fixed to said second sleeve in op position to said ñrst clutch member; and trans mission means including a reverse drive con nected to said driven shaft. 10. VThe combination with ñuid drive means in cluding e. driving impeller and a driven turbine wheel; of abutments carried bythe whee1;'a driven shaft axially directed theretoward; a sleeve longitudinally shiftable of the shaft and drivingly connected therewith; a toothed mem*u ber ñxed to the sleeve to engage with said abut` ments; a second sleeve, slidably telescoping with said ñrst sleeve and drivingly connected there with; a clutch member driven by said Wheel; a second clutch member fixed to said second sleeve in opposition to said ñrst clutch member;l and transmission means including a reverse drive con nected to said driven shaft; and a yielding,l vfloat ing member between said two clutch members normally separated from one of those members; >and Aseparate means operating each of said sleeves. C. lVEANER.