Патент USA US2404907код для вставки
¿my #alè E46. D. H. HEYNAU 2,404,07 DRIVING MEGHANISM Filed Oct. 12, 1942 70 Faas 5 Sheets-Shee‘i'l l July 30, 1946. 2,404,907 D. H. HEYNAU DRIVING MECHANISM Filed Oct’. 12, 1942 mf/Mm| - //^\/// AW V al. ,. É, ws êä v Mw,Olmk www» @W /A W v,//// QN NÓE, *Gxo@nNU_ N„CWM. l! @.âQb ' `5 sheets-sheet 2 | _É œ_ ,o jfœlo@ë. / Jy sw, w46, D. H. HEYNAU 2,404,907 DRIVING MEGHANISM Filed Oct. l2, 1942 5 èheets-sneet 5 Patented July 30, 1946 2,464,907 UNITED STATES PATENT OFFICE 2,404,907 DRIVING MECHANISM David Hans Heynau, Yellow Springs,'0hio Application October 12, 1942, Serial No. 461,683 6 Claims. (Cl. 'Z4-284) 2 1 This invention relates to a power transmission unit for transmitting power from the prime mover to a load and more particularly to a variable speed power transmission unit. An object of this invention is to provide a pow er transmission unit wherein the speed of rota tion may be varied and reversed at the will oi view of the preferred embodiment of the speed control mechanism used in supplying power for actuating a gun. Figure 2 is a longitudinal cross sectional view of the variable speed control mechanism, taken substantially on the line 2--2 of Figure '7. Figure 3 is a fragmentary perspective View of the lever, the bushing controlled thereby and the conical member removed from the housing. Figure 4 is an exploded View of the bushing a control mechanism for controlling a variable 10 control mechanism. speed and reversing mechanism easily and efñ the operator without shifting gears. Another object of this invention is to provide ciently at the will of the operator. ‘ Figure 5 is a diagrammatic end View of one bushing and its control mechanism to show the nature of the cavities therein. Figure 6 is an exploded view of the differential power from a common prime mover to several 15 loads, either independently or simultaneously at mechanism. Figure 7 is a cross sectional view of the variable various speeds, the speed of one unit differing speed control mechanism, taken substantially on from the speed of another unit. the line '1_1 of Figure 2. Another object of this invention is to provide a control unit for controlling the movement of a 20 The control mechanism for the gun includes a cage that is rotatably mounted with the gun, gun at the will of the gunner, which gun is power which cage supports the driving mechanism, the driven. necessary controls and the gun, as will appear Another object of this invention is to provide a more fully from the description of the device that pair of power transmission units responsive to a Another object of this invention is to provide a multiple power transmission unit transmitting common prime mover, one of which units may be 25 will now be made. Referring to the drawings, the reference char used in elevating the gun and the other in rotat acter It indicates a wall of a fuselage, wing or ing the gun horizontally. some other portion of an airplane provided with Another object of this invention is to combine an annular opening. superimposed upon and at a .power transmission unit utilizing a planetary gear system wherein the relative speed_of the 30 tached to the margin of the wall lll is an annular, internally toothed gear ring II. The gear ring gears may be changed in either direction, to il and the inner margin of the wall lll cooperate thereby control the output speed and direction of to form an annular channel opening inwardly. rotation. A cage l2 is carried in the opening in the wall Another` object of this invention is to provide a variable speed and reversing unit driven by a ,w Us l0. This cage l2 is provided with an annular uni-direction constant speed prime mover` Another object of this invention is to provide outwardly directed flange i4, projecting into the movement at the control are translated into un channel formed between the inner margin of the wall lllrand the internally toothed gear ring Il. The flange I4 is mounted'upon suitable roller bearings I6 and I8 disposed upon opposite sides equal increments of movement at the variable speed reversing mechanism. of the flange and engaging the wall l0 and the gear ring Il respectively. Although member H Another object of this invention is to provide a control for a variable speed reversing mechanism such that predetermined increments of move ment of the manual controls at low speeds re sult in a slight change in speed ratio and the same increments at high speeds greatly change the speed of the device. Other objects and advantages reside in the " construction of parts, the combination thereof and mode of operation, as will become more ap has been referred to as a gear ring, a gear sec tor or gear sectors could be used for some types of a manual control for a variable speed and re versing mechanism wherein equal increments of parent from the following description. In the drawings: Figure 1 discloses a schematic cross sectional installations. A prime mover 2l), such as an electric motor, is mounted in one end I9 of the cage l2, which end may -be referred to as the bottom of the cage, as viewed in Figure 1. The cage need not necessarily be arranged so that the lower end shown in Fig ure 1 is always at the bottom, as the gun in some installations may be mounted below the cage, in which event this end would then be the top of the cage, or the gun may be mounted so that this particular end could be referred to as the vertical 2,404,907 4 3 cal members, the speed of the metallic ring 4| is changed. Thus, by rotating the conical members end of the cage. In other words, the cage is mounted opposite the gun, irrespective of the particular location of the gun. This prime mover 2c may consist or" an electric motor energized from a suitable voltage source. If, for example, the available voltage is 12 volts direct current, then the ,prime mover would be a l2 volt D. C. electric motor. This prime mover may be set to rotate at a constant speed in one direction and the same direction at all times 10 3d and 36 at a constant speed, it is possible to ro tate the conical members 38 and Ml at a higher or a lower speed, depending entirely upon the adjustment of the conical members. The mech anism for adjusting the conical members will no'w be described. An adjusting lever |90 is mounted on a shaft |62, which shaft is pivotally mounted to the hous ing 32. This lever is bifurcated and provided with apair of arcuate slots |04, one in each bifurcation lima and mtb. The centers of curvature of the slots IEM are displaced from the axis of the shafts when in use. A pair of reversible, variable speed transmission units 39 are mounted on either side of the prime mover or electric motor «25, one on each end. 'As these reversible, Variable speed transmission> units 15 |532, >so that as the lever |99 is oscillated, a pair of pins |86, actuated by the slots IM, have a longi are identical, only one will be described in detail. tudinal movement parallel to the axis of the shaft As may best be seen by referring to Figure the reversible Variable speed transmissionunit " El). Each pin |06 has one end iixedly attached in the bushing 85, there being one pin itâ mount~ St includes a housing 32. This housing enclcses a plurality of conical members 34, 3S, 38 and ¿te 20 ed on each side of the bushing, so that as the lever |539 is oscillated' about the pivot |92, the'bushing arranged in pairs rotatably connectedfthrough a 85' moves to the right or to the left, as viewed in rigid, metallic ring M. The conical members 3i Figure 2. _Since there' are two diametrically dis and 35 constitute the driving unit for thering driving the conical members 33 and liti. _ posed pins |96, it reduces twisting movements. ' ' The relative speed of the two pairs of conical 25 The angular position and the shape of the arcuate slot is determined by the speed changing require members is dependent upon their adjustment. ments. For aircraft guns it is preferable that The-conical members 34 and 38, are mounted for a predetermined increment of movement of the rotation without axial adjustment. The other ' slots causes a slight change of speed-at» low speeds conical member of each pair, namely 355 and 4t, are mounted for axial adjustmenaas will appear 30 and a like increment of movement causes a great chan-ge in speed in the higher speed ranges. This more fully from the detailed description that folV~ permits the rapidshifting of the gun until it is lows. . directed near the target, when it may be adjusted Conical member v3ft' is integral with a tubular slowly to keep it directed on the target.` Y sleeve 42 splined to a shaft 59 that is either inte In order tocau'se bushing i6 to be adjusted in gral with or connected to the rotor shaft 22. The unison with the bushing 85, these two bushings tubular sleeve 42 is journalled in a bearing 52 and are interconnectedrby a connecting rod which the end-thrust bearing 54, the end-thrust bearing will now be described; Bushingl member 85 is pro» having the inner race arranged to abut the coni . vided with a cut-away portion or notch Il!) re cal member ät, so as to prevent axial movement thereof. The conical member 38is also provided ceiving a projection'llZ located between notches Ill and | I3 and integral with a tubular sleeve H4 mounted upon a reduced end of a pin H5, with a tubular sleeve 53 mounted on a splined shaft SÉ. vThe tubular sleeve 53 is journalled in provided with an enlarged end having cut-away a bearing e2 and an endfthrust bearing Sli, the portions ||8 andV |20, leaving an'exteneion |22. inner race of which abuts the top'of member 38. The bearings 52, 54, 62 and Fili are press-fitted or otherwise secured inV position in the cavitiesfound in the housing 32. The end-thrust bearings 5t and 64 abut suitable shoulders that provide solid 45 The exten-sion |22 projects into a suitable notch |24 in bushing member 1Eì.v_ The cut-away por~ tions or notches HEI, ||"|,v|l3, H8, |29 and |213 arejprovided with arcuate bottomsrthat have a Vcurvature corresponding to the complementary Y ~ _ > ‘ In order to provide adjustment for the conical 50 part of the adjacent Ymember. The' radii or" notches llû'and |24 are concentric with the lon members 36 and 4G, each of these members is gitudinal axis of the pin H6 and substantiallyv mounted for axial adjustment. The conical mountings for these bearings. concentric with the axis of rotation of the ring 4|. The curvatures of notches Il!> and H3 are ings ?2 and` 1Q, of which the latter is an end- .. centered on the axis of rotation of conical 'mem ber 40. The curvatures of notches H8 and |25 thrust bearing. The bearings ‘i2 and _lâ are not are centered on the axis of rotation of the conical fixedly secured to cavities in the housing 32; but member 36. For the purpose of illustration, the instead. are mounted in an adjustable Ybushing bottoms of some rof the cut-away portions have 'i6 mounted for axial movement parallel to theV longitudinal axis of the shaft äíi. lThe conical 60 Vbeen indicated schematically in Figure 5. This arrangement causes the bushings 16 and 85 to be member Mi is integral with the tubular sleeve Sil, moved in unison. Due to the fact that the coni splined upon the shaft t0, and journalled in bear cal members 36 andv 45 are diagonally disposed, ing 82 and 84, of which the latter is an end or located upon opposite sides of the ring 4|, it thrust bearing. The bearings S2 and 84 are fixedly mounted in a tubular bushing S6 mounted 65 can'be readily >geen that as these conical members member 35 is integral with a tubular sleeve lil splined upon the shaft Sii and journalled in bear for axial movement in the housing 32. . In order to change the relative speed of the are adjusted-to the right or to the left, as viewed in Figure 2, one willbe moved away from and the other toward the other'conical member of the pair, or vice versa. This causes the -ring 4| to are' adjusted axially in unison. Thus, it is pos sible to increase the distance between conical 70 be seated between the conical’ members and con tacting the conical members, .irrespective of the members 34 and 36 and at the same time adjust relative adjustment of the conical members. conical members> 38 and ¿it toward each other. , A suitable compressible washer or spacing If members Se and 36 are adjusted toward each member |30 is located between the shoulderv |32 other, members 38 and ¿it should then be sep arated. By changing the adjustment of the coni 75 on the'. pin H6 and the tubular sleeve H4. In pairs of conical members, the bushings ’it and 86 2,404,907 5 6 stead of a compressible washer being used, a rigid in the ring gear |64. The opposite end of the spider |55 is journalled in a pair'of bearings |16 washer of suitable size either with or without and |3D. The bearing |76 is mounted in the ring In order to gear |64 and the'bearing |85 is mounted in the tighten or loosen the pressure exerted by the coni housing |82 enclosing the differential mechanism. cal members against the lbevelled inner periphery A bearing |84 is mounted within the spider |56 of the driving ring Lil, it is merely necessary to adjust the lock nuts |313, threadedly engaging the and supports the outer end of the shaft 50. The output shaft |69 of the reversible, variable end of the pin | |8. The use of the tubular sleeve speed unit mounted to the right of the prime im in addition to permitting adjustment, also facilitates assembly of the parts. 10 mover is ñxedly attached to the spider |56 and is connected through a suitable coupling unit 28€) The connecting unit has been centrally posi to a drive shaft 202 projecting into a speed re tioned in the plane formed by the axis of rota duction gear box 22d, provided with a drive shaft tion of the shaft 5D and the axis of the shaft 60. 206 suitably journalled at 208 and 2|il to the side By mounting the connecting unit in this central position, theY bearings may be easily adjusted. 15 wall of the cage I2, and carries a gear 2 I2 meshing shims as required, may be used. This connecting unit, consisting of the tubular with the inwardly directed gear teeth on mem sleeve | I4 and a pin H6, is actuated by the move ment of one bushing in a direction parallel to the movement of this bushing and parallel to the movement of the other bushing. This tends t0 re» 20 ber ||. The control lever |20 is driven through duce torque and twisting movement. Further more, the central location of the connecting unit is a direct method of interconnecting the bushing and the adjustable conical members, thereby ob taining a direct, rigid connection between the bushings. It can readily be seen that a sym metrical arrangement of parts is thereby obtained to great advantage. a shaft 22|! attached to one of the shafts |02, which control lever is provided with a crank or lever 222 actuated by the gunner seated in a seat 22e. It is merely necessary for the gunner to actuate the lever 222 to the right or to the left to rotate the gun 226 mounted on top of the cage I2, as viewed in Figure 1, either in a clockwise or a counterclockwise direction, depending entirely upon the movement of the control lever 222. The reversible variable speed unit 35 mounted to the left of the prime mover, as viewed in Figure 1, has the output shaft |65 rotating a The shaft 50 has splined on its outer end a sun gear |59 meshing with a planetary pinion |52 30 drive shaft 282 projecting into a speed reduction journalled on a pintle |54 carried on a spider |58 gear box 204, identical to the one already de that has fixedly attached thereto a drive shaft scribed. The output shaft 2&6 of this second |66. The outer end of the shaft 5B has splined unit has its upper end terminating in a worm thereto a gear |62 meshing with the external gear gear 230, meshing with a worm gear sector 236, teeth |66 of a ring gear |54, having its internal raising and lowering .the gun in response to gear teeth meshing with the pinion |52. When the velocity imparted by the sun gear |50 to the planetary pinion |52 is equalled and opposite in direction to the velocity imparted by the ring gear IEi?l, the axis of the planetary pinion |52 journalled on the spider |56 stands still. This causes the spider and the output shaft |60 to movement of the lever 222 shown to the left of Figure 1. Thus, it is seen that the angular po sition both horizontally and vertically may be adjusted from the same prime mover rotating at a constant speed, without changing gears, but merely changing the relative speeds of two rotating shafts. stand still. This condition exists at a predeter mined relative speed ratio of the shafts 50 and shown for the purpose of illustration. 60. This speed ratio will zbe referred to as the rangement of parts may be altered and the critical speed ratio. Whenever this speed ratio is reduced, the spider |56 will rotate in one direction and whenever the speed ratio is increased, the spider will rotate in the opposite direction. The mechanism changed so as to carry out the same The device disclosed herein has merely been The ar fundamental principles. Instead of utilizing a mechanica1 control device, such a control device may be hydraulic or possibly electrical. gear ratios may be so selected that the critical 50 The device is easily controlled. Instead of speed ratio of the speed of the shafts 5D and 6|) utilizing separate control levers, a single control occurs when the conical members of both pairs lever or pair of control levers moving in unison are equally spaced so that by separating the driv may be used, for example, such that the hori ing conical members, the spider rotates in one zontal movement rotates the gun horizontally direction and vice versa. This permits the re 55 and the vertical movement raises or lowers the versal of the speed changing unit. By selecting gun, as viewed in Figure 1. As a matter of fact, the proper gear ratios, the critical speed ratio may these movements may be so arranged that the be one or unity. If so, the spider will stand still handles point in the direction of the target. whenever the shafts 5E] and 68 rotate at the same speed. In the event the shaft 60 rotates at a 60 Both units may operate simultaneously, causing the barrel of the gun to swing through a diago faster speed than the shaft 50, the spider will ro nal path, depending upon the relative speed of tate in one direction and when the shaft G0 ro the two units. By this arrangement, it is pos tates slower than the shaft 5t, the direction of sible to keep the gun aimed at the target, irre rotation o-f the spider will be reversed. This one spective of the relative movement of the .target 65 to one ratio of the shafts 52 and S0 has merely with respect to the gun. When the target is been selected for the purpose of explanation, as passing rapidly within the range of the gun, the it is not necessary for the operation of the re gun may be moved rapidly. When the target is versible, variable speed unit to select a critical moving more slowly, the movement of the gun speed ratio of one. As may best be seen by referring to Figure 6, 70 may be reduced. In the event a target lmex pectedly enters the range of the gun, but the gun the spider |56 is provided with a plurality of is directed in some other direction, the gunner openings receiving the pinions |52. The end Iâûa may rapidly swing the gun at a high speed into of the spider is journalled in a pair of bearings position to be aimed at the newly discovered |79 and |12. ’I‘he bearing |18 is ñXedly mounted in the housing 32. The »bearing |12 is mounted 75 target. ’ _ 2,404,907 8 ïDue to :the 'fact 'that Y'in .aircraft Vwari'are'tlfieY the‘bushings »and their respective corneal 'çmem target `may be'within the range fof theigunïfor a .period equal to :afraction :of a'minuta'it can bers .to‘bexadjusted in parallel paths. 'î 2. .'Afdriving mechanism 1 for ,transmitting --vari readily >be ¿appreciated that " it is very " important ous ïmovements Y.to driven means, said driving that'fthe driving >mechanism be ¿adapted to rap idly swing the gun into position, Vbut ’at’th'e same time to'permitïslow movement of >thegun .to keep it‘on'the'target. .It is Vpossibleïto do so ïby the driving mechanism shown herein. .In the :embodiment shown herein the prime 10 mechanism .including Va pair of .variable ispeed moverfand the `.reversible variable speed :units driving '.means, Veach 'of said driving means in cluding a’pair of coaxially mounted conical'driv ing members, a second’pair of coaxiallym'ounted conical driven members, one ïof .theiconical mem bers of each pair `being adjustablyimounted îfor ` axial adjustment, va drivingring fortransmitting power »from the conical `driving members to the conical driven members, a pair of :tubularìbush have been *mounted upon Vthe end wall ‘of the Y cage. ,The prime mover `and the reversiblevaria ble .speed :units maybe mounted‘elsewhere within ings mounted for axial movement, .one ¿of the the '.cage, or ¿for thatlmatter, on .the outside .of the cage, whichever'may prove themost advan .tubular bushings Vbeing -coaxially disposed with tageous for v.the :particular `gun ‘mounting and respect to the conical driving'members >one of ' which is .journalled in said bushingiorm'ove available >parts 'and space. Ilï‘urtl‘iermore, the ment therewithVsaid ‘one >bushing being located prime ¿mover ‘and the -reversible lvariable .speed for axial-adjustment on one'side of the yringthe units :maybe mounted outside Vof .the cage, so 20 other tubular lbushing Ybeing c'oaxially Vdisposed thatone reversible variable speed unit will .ac with 'respect tothe conical driven members, Yone tuate an external ,gear on the cage'for. horizontal of'which‘ijs -journalled therein .for axial move movement, as ìviewedîin Figure 1, and the other ment therewith, said'one bushing being’ located reversible variable speedunit may drive a shaft on the opposite side“ of the ldriving ring, saidV extending Vup through the center'of the cage,„so 25 bushings being provided with notches opening as to actuate the elevation of the gun. rThe >con so as to be directed in the generalY directionof trols ¿could then `be .brought up `through '.the‘cen the axis-of rotation of the drivingiring, and con' ter ofithe cage by suitable links and connecting' necting means including a cylindricalfc'onnecting units, so that the Voperator could control `the member for interconnecting the bushings, said units independently'of- themovement ofthe cage. 30 cylindrical connecting member including cutThis arrangement would `serve to .reduce .the away portions on fopposite sides of extensions weight ofthe cage proper thathasetobe moved, projecting into'said' notches, so Vthat `a'srone bush thus, reducing the required power. Further ing is adjusted theother bushing is adjusted 'in more, for .some installations, Athe .Cage may 4be the ‘same direction, to thereby Aadjust the two eliminatedin its entirety, the reversible variable conical ’members journalled in ïthe bushings >in speed units being vused to actuate the gunperse unison to changethe relative speed of the driven' and the parts carried thereby. members with respect to the driving members. ' Although the preferred .modiiication of vthe 3. A driving mechanism for transmitting vari device has been described, it will be understood ous movements to driven means, said vdriving that within `the purview of thisinvention .various mechanism including 'a pair vof variable speed changes may be made inthe çform, -details, ,pr.o~ driving‘means, each of said driving means in portion and arrangement or parts, .the combina tion ‘thereof and mode of , operation, which >gen erally stated consist in va device capable of carrymr ing out the objects set forth, as disclosed and-'de fined in the appended claims. , , Having thus described my invention,.I claim: l. `A driving mechanism for transmitting vari ous movements to driven means, »said .driving mechanism including a .pair of variable ~speed driving means, each cfsaid driving'means includ ingla Vpair of coaxially mounted .conical Vdriving members, a second pair of coaxially mounted conical driven members, one of the conical mem bers of each pair being adjustably mountedfor ». axial adjustment, a drivingringlfor transmitting cluding a pair .of coaxially mounted conical driving members, a second -pair -of coaxially mounted conical driven '-members, one »of vthe conical members of -each pair being fadjustably mounted for axial adjustment, la driving ring for transmitting‘power from the conicalrdriving members to the conical driven 'members la pair of tubular 'bushings mounted for `axial move mentf'one of the tubular bushingsïbeing'coaxially disposed with respect to the conical driving members `and ‘located for axial >adjustment -on one-side of the ring, the other tubular bushing being coaxially disposed with respect 'to the conical driven members and located on the op positeside of the driving ring, each ofthe `>ad Vjustablerconical members terminating in a tubu power from the conical driving members to the lar-sleeve journalled in one-of said bushingsrfor conical driven members, each of 'the adjustably mounted conical members terminating in aY tubu axial adjustment therewith, said bushings being lar sleeve portion, a pair of tubular bushings 60 provided with notches openingso as 'to bedi rected=in`thegeneral direction of the axisl of >ro mounted -for axial movement, said bushing o'f tation of the drivingring, andconnecting means oneof the conicalmembers being located on one side of the driving ring and the bushing of the other-conical member being located onthe oppo site "side ofthe -driving ring, "and connecting provided with vextensions Vprojecting into said notches, said connecting .means'including `a pin and 'a sleeve mountedupon the pin, saidpin hav means including a notched tubular memberfsaid connecting means holding theïbushings in ñxed spaced'relation 'from each othenso that as one bushing is adjusted and with it its conical mem berfthe other bushing is'adjusted and with it its 70 ing :an >extension projecting into .one of ',.the notches of one bushing iand the sleeve vhavingran conicalmember, saidconnecting member having extension projecting into thenotch of the other bushing, said sleeve being fixedly mounted upon the pinso .that as. one bushing is adjusted. axially the vother .bushingtis adjusted in like manner. its longitudinal axis 'positioned in aplane -deter . 4. A driving mechanism for transmitting vari mined by the Yaxes of ‘rotation of :the conical ous 'movements to Vdriven means, said driving mechanism including a ïpair of -variable speed »members and .substantially.coincidental with» the axis of rotation of the driving ring so as tofcause driving imeans, eachfof ~said driving :meansin 2,404,907 9 cluding a pair of conical driving members, a second pair of corneal driven members, one of the conical members of each pair being adjusta bly mounted for axial adjustment, a driving ring for transmitting power from the conical driving members to the conical driven members, a pair of tubular bushings mounted for axial movement, one of the tubular bushings being concentrically disposed with respect to the conical driving mem 10 for interconnecting said bushings, said connect ing means having arcuate cut-away portions on one side centered on the center of rotation of one pair of conical members and arcuate notches on the opposite side centered on the center of rotation of the other pair of conical members, the cut-away portions on the connecting means complementing the cut-away portions on the bushings, so that the bushings are intercon nected through said connecting means so that as 10 bers and located for axial adjustmentJ on one one bushing is adjusted axially the other bushing is adjusted in like manner. 6. A driving mechanism for transmitting vari ous movements to driven means, said driving side of the ring, the other tubular bushing being coaxially disposed with respect to the conical driven members and located on the opposite side of the driving ring, each of the adjustable coni cal members terminating in a tubular „sleeve 15 Ymechanism including a pair of variable speed driving means, each of said drivingV means in journalled in one of said bushings for axial ad cluding a pair of conical driving members, a justment therewith, said bushings being pro second pair of conical driven members, one of vided with notches opening so as to be directed the conical members of each pair being adjusta in the general direction of the axis of rotation of the driving ring, connecting means provided with 20 bly mounted for axial adjustment, a driving ring for transmitting power from the conical extensions projecting into said notches, said con driving members to the conical driven members, necting means including a pin and a sleeve a pair of tubular bushings mounted for axial movement, one of the tubular bushings being concentrically disposed with respect to the coni cal driving members and located for axial ad mounted upon the pin, said pin having an ex tension projecting into one of the notches of one bushing and the sleeve having an extension pro jecting into the notch of the other bushing, said sleeve being fìxedly mounted upon the pin so that as one bushing is adjusted axially the other bushing is adjusted in like manner, and means justment‘l on one side of the driving ring, the other tubular bushing being coaxially disposed with respect to the conical driven members and located on the opposite side of the driving ring, each of the adjustable conical members ter for axially adjusting the tubular sleeve upon the , pin to thereby adjust the relative distance be minating in a tubular sleeve journalled in one tween the bushings. of said bushings for axial adjustment therewith, said bushings being provided with arcuate 5. A driving mechanism for transmitting vari ous movements to driven means, said driving mechanism including a pair of variable speed . „ notches having a common center of curvature, driving means, each of said driving means includ ing a pair of conical driving members, a second pair of conical driven members, one of the conical members of each pair being adjustably mounted for axial adjustment, a driving ring for trans mitting power from the conical driving members to the conical driven members, a pair of tubular bushings mounted for axial movement, one of the tubular bushings being concentrically dis posed With respect to the conical driving mem bers and located for axial adjustment on one side of the driving ring, the other tubular bushing cylindrical connecting means for interconnecting said bushings, said cylindrical connecting means including a pin having arcuate notches on one side having a common center on the axis of ro ", tation of one set of conical members, an ad justing sleeve mounted on the pin, said sleeve having arcuate notches centered on the axis of being coaxially disposed with respect to the conical driven members and located on the op posite side of the driving ring, each of the ad justable conical members terminating in a tubu lar sleeve journalled in one of said bushings for axial adjustment therewith, said bushings being provided with arcuate notches having a common center of curvature, cylindrical connecting means 55 rotation of the other pair of conical members, the portions between the notches on the pin being seated in the notches of the adjacent bushing, the portions between the notches on the tubular sleeve being seated in the notches of the other bushing, means for adjusting the tubu lar sleeve on the pin to thereby adjust the dis tance between the bushings, and means inter connected to one of the bushings for shifting -the bushings axially in unison to change the relative speed of the conical members. DAVID HANS HEYNAU.