Патент USA US2123184код для вставки
July 12, 1938. E. c. EKsTRoMER 2,123,184 DRIVING MECHANÍ SM Filed May 11, 19:57 3 Sheets-Sheet 1 July l2, 1938. E; c. EKSTROMER _2,123,184 DRIVING MEGHANISM Filed May ll, 1957 3 Sheets-Sheet 2 July 12, 1938. E. c. EKSTROMER 2,123,184 DRIVING MECHANISM Filed May ll, 1937 ßwir» 5 Sheets-Sheet 3 “l \ 5, a , /NVfA/TOR fp WARD C. 5K5 WUMER AWO/w56 Patented July 12, 1938 ‘ UNITED STATES - PATENT, OFFICE 2,123,184 DRIVING MECHANISM _ Edward C. Ekstromer, Los Gatos, Calif., assignor . to Electrolift Corporation, Reno, Nev., a cor poration of Nevada Application my 11, 1937, vserial No. 141,955 18 Claims. This invention relates to driving mechanisms verse sectional views taken respectively on the and more particularly to motion converting lines 8_8, 9_9 and IIl--IIl of Figure 7; _ ‘ mechanisms of the character- embodied in my> Figure 11 is a transverse sectional view taken Vco-pending application for patent, Serial No.Á on the line II-,II of Figurev _'1.' ' 5 95,556,1lled August 12, 1936, wherein rotary mo Referring speciñcally to the> drawings,the in tion is converted into reciprocating movement by vention in its present .embodiment is enclosed by Ol mechanism embodying positive driving connec and works in a tubular housing |_0 which is simi tions such as jaw clutches adaptedto be alter lar to that disclosed in my co-pending applica , nately'engaged and disengaged to cause one or tion for patent on Pumping mechanism, Serial 10 another _of a plurality of rotary driven members to No. 82,025, filed May 27, 1936. For the present co-act with a rotary driving member in actuating application it will suiiice to state that this hous- ' :a shuttle orother reciprocable member. ing is cylindrical in cross section and is pro ' -An `object of the present invention is to pro vide a _motion converting mechanism _embodying 15 ‘means by which engagement of the jaw» clutches _is causedpto be effected when the jaws of the clutches are relatively at rest rotatively, so as to obviate excessive wear on the teeth yof the clutch jaws and sudden stopping of the respective driven 20 member, with the attendant shocks imposed vided internally at diametrically opposed points ' with longitudinally extending grooves II--II in . which work keys I2-I2 (Figures 3 and 5) se cured in longitudinal grooves I3-I3 formed ex 15 ternally in a cylindrical shuttle I4, the ends of which-are closed by top and bottom plug caps I5 and I6 respectively, rigidly secured to the shuttle by screws I'I. _ thereon and on associated working parts. 'I'he shuttle I4 is confined by the keys I2-I2 I 'Another object of this invention is to provide to movement axially in the housing, and is adapt _ a Ymotion converting Amechanism wherein fric ed to be reciprocated therein between upper and ' ~tional braking connections, such as friction f lower bearings I8 and I9, respectively, within' . `25 brakes, are cgi-ordinated> with the positive driving which is journaled to extend through the shuttle` 25 connections providedby the jaw clutches, in a` in co-axial relationship thereto a feed shaft l2!) l mannerto -smoothly absorb the starting load upon having externally thereof right and left hand ' spiralgrooves 2| and 22, respectively. The bear ings I8 and I9 provide for both radial and'end thrusts upon the shaft 2U; and the boxes of these bearings are rigidly secured to other units (not shown) of the assembly making up the pumping mechanism of my co-pending application above actuated. With these and other objects in view, the in-‘ referred to, all to the end that the bearing boxes will be fixed in the housing against rotation and 35 vention consists in thecombinations and arrange `ments of ~elements asset forth in the following axial displacement relative thereto arid will -con specification _and Vparticularly pointedfout in the ñne thev feed shaft 20 to rotationalmovement reversal of the shuttle’s movement, by causing the jaws of the respective jaw clutch to b_e brought 30 relatively to rest rotatively, prior to engagement of the jaws, so that such engagement will be smoothly effected andthe shuttle then positively in the housing.- appended claims, -' f A In -the accompanying drawings, - _ ` 40 ` Figure 1 _is >a view‘showing in central longi tudinal section the driving -mechanism embody ing'this invention; - ` u ' _ i \ ' The shaft 20 broadly constitutes a driving mem ber and has threadedly mounted thereon driven members in the form of sleeves which constitute right and left hand» nuts 23 and 24, respectively. .The _nuts 23 and 24 are in closel proximity at Figure 2 is a view similar to Figure 1, and taken - their confronting ends, and respectively co ,_"onthe line `2--Í2 thereof;v ' - _ " " _ Figure 3 is‘a ~longitudinal sectional view taken -on the Aline 3-'3 of Figure 5; ' _ _ act at their other ends with anti-frictionA thrust bearings 28 and 29 which respectively abut the' gs 5 top and bottom caps I5 and I 6, Vwhereby to con Eig'ure‘i' isv a central longitudinal sectional view iìn'e the nuts against axial displacement relative similar to Figure „1, but with the intermediate to the shuttle. ` » 50, portion of the mechanism broken _out and the Secured by screws 30 to interiitting flanges 3| terminal portions thereof illustrated in detail; on the nut 23 is a ñxed clutch jaw 32 with respect _ ' Figures 5, A6 and 7 are transverse sectional , vviews taken, respectively, on the lines 5+5, E--6 and 1--1'of Figure` 1; 15'5- " Figures 8, `9 -and 10 are fragmentary trans to which a movable clutch jaw 33 is adapted to be engaged and disengaged, this movable jaw being slidably mounted on the cylindrical periph very of the nut 23 for movement axially relative 2 2,193,184 to the fixed jaw 82. Another fixed clutch jaw 34 is secured by screws 86 to interfltting flanges 36 on the nut 24, for co-action with a movable clutch jaw 31, which latter jaw is freely mounted on the cylindrical periphery of the nut 24 for movement axially relative to such fixed jaw. Ad jacent their respective flxed jaws 82 and 84,.the 10 nuts 23 and 24 are respectively provided with diametrically opposed stop pins 32a-_82a and 34a-34a, each of which is located directly oppo-> site the crest of a tooth on the jaw. 'I'hese stop pins are adapted to co-act with axially arcuate re- - cesses 38a and 31a centered with respect to the crests of teeth of the movable jaws 88 and 81, 15 respectively, in a manner to be described in the operation of the invention. ` _ l rods 66 extend freely through grooves 59 and 66 in the caps I6 and I6, respectively, and are rigidly connected at their ends by screws 6I to cross plates 62 and 63 respectively, above and below the caps I5 and I6. The cross plates have central openings 64 and 65 respectively, freely re ceiving the feed shaft 20. The rods 55 are provided with keeper plates 66-66a which work in slots 61-61a in the shut tle I4 so as to guide the rods rectilinearly, and are 10 also provided with inwardly projecting brackets 68-68a provided respectively with pins 69-69a surrounded by coil springs 10-1Ila projecting ' into pockets 1I-1Ia in the respective movable 'Jaws 38 and 31, therelationships of the brackets, pins, springs andy movable jaws being clearly It is to be noted from a consideration of Figure - shown in Figure 2. The movable members of the friction brakes ' 3 that the co-acting teeth of the jaws 32 and 88 F and F' are operatively connected t9 the afore are adapted for driving engagement in one di rection, whereas the co-acting teeth of the jaws 84 and 91 are adapted for driving engagement in the reverse direction. Furthermore, as shown stated actuating mechanism A by toggle mecha 20 nisms which are identical in construction so that a detailed description of one will suffice for both. in Figure 3, the movable jaws I4 and 81 are con-` However, to distinguish `like parts of the two fined against rotation relative to the shuttle I4, _ toggle mechanisms from each other, the numerals yet are adjustable axiallythereof by keys 88 and designating the parts of one mechanism are pro 2.5 » 39 fixed to the >respective jaws and working in vided with exponents. 'I‘he toggle mechanism for the brakes F-F is keyways 4I) in the shuttle. The fixed and movable jaws 82 and ll constitute interposed therebetween as shown in Figure 1, a jaw clutch J , whereas the fixed and 'movable and comprises yoke links 12-12 pivotally 30 30 jaws 34 and 31 constitute a jaw clutch- J',- the mounted at one end' on pins 13-18 -projecting clutch J being adapted for positive driving en gagement and the clutch J ' for disengagement or vice versa, to accordingly render the nut'28 co operable with the shaft 28 when rotated in one 35 direction, to feed the shuttle I4 in one direction, or the nut 24 co-operable with the shaft to feed the shuttle in the reverse direction. Fixed male cone rings 4I-4I and 42-42 are mounted oppositely' in pairs spaced from each ' other on the nut 23 and are ?xed thereto by keys> from the actuating rods 55. At their other ends ' the links 12`--~12 are pivotally connected to toggle links ‘|4-14vand 'I5-15. - ‘_ The toggle links 14 and 15 are respectively con nected pivotally to toggle rings 16-11, the ring 35 16 directly engaging one of the movable female cone rings 50 and being opposed by coil springs 18 carried by a separator ring 19, these springs and separator ring being common to the movable brake rings 56 and 66a and tending to disengage them- from the respective fixed male cone rings 43 and 44 respectively. The rings 4I are con \ fined against axial displacement relative to the 42 and 42a. nut 28 by split stop rings 46 and 46 secured to»~ Interposed between the toggle ring 11 and the the nut, and the rings 42 are confined against confronting movable female cone ring 49 are similar displacement by an annular shoulder 41 compensating rings 8land 8l carrying compen 45 on the nut; and a ring 48 threaded on the end of the nut, all vas clearly shown in Figure 1. Cosacting rœpectively with-the parts of nxed male cone-rings 4| and 42 are movable female cone rings 49-49 and _5l-»58, respectively, seg cured together to form unitary structures by screws .5I-52 and keys I8 and 54, which latter work in the keyways 46 Aso as to`conflne the female cone rings against rotation relative to the shuttle sating` springs 82 which bear against the toggle ring 11 and seat in pockets 63 in said one of the female cone rings 49. 'I‘he compensating-.ring 88 is secured to the female cone ring 49 by screws 84, whereas the 50 compensating ring 8l is connected to the com pensating ring 88 by screws 85 allowing a limited axial movement between the rings for stressing of the springs 82 which yieldingly apply the force of the toggle mechanism to the movable female 55. The pairs of male cone rings 4I and 42 co-act cone rings 49 until the compensating rings abut.` with the respective pairs of female cone rings 48 “,The toggle rings 16 and 11 and- the compensat I4, yet permit axial adjustment of the rings. and 50 to provide friction brakes F--F, and it is ing rings 80 and 8l are provided with suitable , to be noted that identical friction brakes F’-F' grooves for the free passage of the rods 55. 'The clutch and brake actuating mechanism A are identically associated with the nut 24 so that a detail description thereof is deemed unnecessary. formed by the assembly of the rods 55 and cross However, to distinguish like parts of the brakes I plates 62 and 63 operatively associated with the movable members of the brakes F, F' and clutches F and F’ from each other, the numerals designat ing the parts of the brakes F' are provided with J , J', as above described, is adapted to be latched in one extreme'- position or another, axially with 65 . exponents. For actuating the movable members of the respect to the shuttle I4 to’ retain either the brake F and clutch J engaged and the brake F' brakesF, F' and clutches J and J ' in a predeter mined timed and functional relationship to ’each and clutch J' disengaged or vice versa, by latch other, an actuating mechanism A is provided, and I dogs 86 and 81 respectively, pivoted at 88 and 89 on the top and bottom caps I5 and I6, respec 70 70 comprises a pai'r lof diametrically opposed actu ating rods 55+55 in the shuttle I4, .which extend tively, thedogs 86 and 81 being urged to latching freely through grooves 56 and 51 in the movable jaws 33 and 31, respectively, and through grooves 58 and 68a in the female cone rings 48-59 and Isa-50a respectively. The end portions of the positions by springs 90 and 9|, for latching en gagement 'respectively with the cross plates 62 and 68. The dogs 86 and 81 are adapted to be moved to 2,193,184 3 non-latching or released positions lrelative to the' engage and retract the sleeve 95 against, the -cross pla es 62 and 93 respectively. according as the shutt e I4 reaches lone extreme position or action of the springs 99 so as to' place the latter A ` under load and store energy thereby, `following which the cross _plate 93 co-acts_with the dogs another in the housing l0. -For this purpose, conical ended collars 92 and 93 are fixed. re 31 to latch the actuating ‘mechanism A in its spectively, to the boxes of the bearingsl `I8 and `lowermost "extreme position fwith the vfriction brakes F-_--F fully engaged, and the LiawelutchJ I I9 in the'path of ‘movement of the dogs as shown in Figure 8. Sleeves 94and 95 are slidably still disengaged. mounted in the collars 92 and 93 on rbds 93 10 andv 91 having springs 98 and 99 thereon for urg ing the respective sleeve to an advanced position - - Y »Y This mode of operation» imposes la braking action upon the yet idling nut 231 by the friction 104 ' brakesl F_--F, which very-.materially reduces the -Í for engagement and retraction against the action ‘ idling speed of the nut, it being understood that ' of the respective springs. by the respective cross the >brakes -F-F slip to. bring 4fthe. nut .nearly to plate 62 or 63 as the shuttle approaches‘the . rest. .concurrently,v thestop >pins 32a-_32a 'be-A corresponding extreme position and ‘before- the -comejalined with the> recesses 33o-_330.111 lthe respective latches are released. *_The springs 98 ,movable jaw 33. so that lunder the previously or 99, asthel case may be. are thus Vplaced under stored energy in the springs 10E the jaw 33 vco load, and the ‘energy vthus stored in thev springs >acts with the jaw 32 to engage> the jaw clutch` J is utilized upon release'of the respective latches, 20 to move the actuating mechanism Af'from one of -A as the stop pins Ñ32a are received in the recesses v 33a. The energy of the springs 'I0 _is only par-f-V 20- " its extreme positions in order to reverse themen- ` tially released when this occurs, "and> there is suili- ` gagement and disengagement of-'the clutch J, 25 cient energy remaining in these springs to main tain‘the movable jaw 33 engaged with the- fixed brake F and clutch J ', brake F’ for the purpose of effecting reverse movement'of the shuttle. The operation of the' invention is as‘fcllows: With the shuttle occupying its lowermost ex treme position shown in Figures l, 2, 3 and 4, the friction brakes F-F and the jaw clutch J are disengaged, and the friction brakes F'--F' 30 are -maintained engaged by the latches- 96-99 " which are coacting with the cross plate 92 `to releasably retain the actuating mechanism A in its uppermost extreme position relative to the shuttle, the jaw clutch J ’ being maintained en 35 gaged by the springs 10a in which sufficient energy was stored during the preceding stroke for this purpose. l As the left hand >nut 24 vis now .being posi tively held ‘by the clutch J ' against rotation, and as the feed shaft 2li is assumed to be driven by a rotary prime mover (not shown) in a clock y45 wise direction as viewed in top plan, this nut will co~act with the left hand threads 22 of the shaft in moving the shuttle I4 upwardly in the housing Il). 1 ' As the shuttle approaches the upper extreme position,'the cross plate 62 engages and retracts the sleeve 94 against the action of the springs 98, so as to place the latter under load and store 50 energy therein. Continued upward movement of the shuttle causes the dogs 86 to engage the collar 92 and be moved thereby against 'the jaw 32. 'I‘here is negligible-or no shock upon re versal of the movement of the shuttle and the transfer of the load. The right hand nut v23 will now be positively held against rotation,~jwhereas the left hand nut 24 will be free to idle by ro tating with the shaft 20 in the aforestated clock wise direction. Therefore, the-nut 23 will co~act 30 with the right hand threads -2| of the shaft to positively move the shuttle downwardly in the housing. ' As the shuttle approaches itsÍlcwer extremel position, the cross plate B3engages and retracts the 'sleeve 95‘against the action of the springs 99 so as to place the 'latterunder load and store energy therein. Continued downward >movement of the shuttle causes the dogs 81to engage the . 4 .collar 93l and be moved thereby against the springs 9i to their released positions relative to the cross _ plate 63. The springs 99 are‘now- free tovshift the actuating mechanism A towards its'upper most extreme position relative to the shuttleso as to disengage the brakes F-F and' clutch _J, and then successively engage the brakes__F'--~F.' and clutch >J’ by the functioning of the' stop pins 34a. and the springs 10a in the same manneras the stop pins 32`a‘and springs 'l0 during the down ward movement of the actuating mechanism A. 'I'he shuttle will now be moved upwardly to complete the cycle of operation which is re springs 99 to their released positions relative to v peated so long as the shaft 29 is being rotated. the cross plate 62. The springs 99 are now free ' It will thus be evident that the‘rotary motion of 56 to shift the actuating mechanism A towards its the shaft 20 will be converted into reciprocating lowermost extreme position relative to the shuttle, motion at the shuttle so that with a recipro and during the initial portion of this movement cating member such as the plunger rodof a pump of- the actuating mechanism the toggle mecha - (not shown) operatively associated with the shut nism for the friction brakes F'_--F’ is released to disengage thesebrakes simultaneously with « disengagement of the jaw clutch J', which is positively effected by lateral shoulders I00a on the rods 55 engaging the movable jaws 31. . At this lpoint in the >downward movement of the actuating mechanism, the'toggle'mechanism for the friction brakes F'-F ls actuated to ini tiate engagement of these brakes, and, upon fur ther travel of the rods- 55, the movable jaw 33 engages the stopl pins .32a-_32a on the nut 23 and 70 is thus temporarily prevented from meshing’with the rotating jaw 32 on the’nut 23. However, the rods 55 complete their full down tle, such element will be correspondingly >recip rocated to perform useful work. It will be manifest that by the provision of the friction brakes F .and E' thatthe `rotating idle .fnut 23` or 24 as the case may be _willbe smoothly brought `nearly to .,rest, following which the re spective jaw clutchJ or J ’ willbe engaged to carry 'es g the load and Y'positively drive 'the' shuttle.v The friction „brakes eliminate the ‘necessity of engag ing the ñxed jawj_aw of the clutch clutch` while is rotating thehutcarrylng idlyv _with thev the shaft 20, Athus obviating excessive . wear ‘ on"r the jaw clutch teeth and `insuring Athat'ïthe reversal of 70. the shuttle’s movement Will-_ be accomplished. " ' stroke by compressing the springs 10, thereby smoothly and positively. Furthermore, ythe‘wear placing the latterl under load to store energy therein, and also causing the >cross plate 63 to and tear on associated- parts of _the lmechanism is reduced‘to a minimum asa‘result’of .thisfmanner l "'f ' annalisa . _ . , of reversing -the movement of-the shuttle and bers free to rotate idly with the driving member; the positive driving thereof without imposing sud ‘means by which _the driven members, when held den shocks thereon, the starting load at each re versal of the shuttle’s movement being practically absorbed by the friction brakes in their func-` tional relationship to the respective jaw clutch. against rotation, are adapted to be axially fed in opposite directions by the braking member; fric tional braking connections one for each of said rotary driven members and each having a fixed part -carried by the respective rotary driven mem ber, and a movable part carried by the shuttle and confined to movement axially thereof to en gage and disengage the ilxed part: positive driv ing connections one for each of said rotary driven members and each having a fixed part carried by the respective rotary driven memberand a movable part carried by the shuttle and confined to move ment axially thereof to engage and disengage the fixed part;‘„and actuating means operatively as ' opposite directions by the driving member; means sociated with said movable parts of the frictional for alternately holding the driven members braking and 'positive driving connections to suc cessively engage the parts thereof for one rotary Aagainst rotation by`establishing a positive driv 20 ing connection between the respective driven driving member and to disengage the parts for the other rotary driving member or vice versa, member and the shuttle, whereby to reciprocate the latter; and means for gradually absorbing the whereby to reciprocate the shuttle and cause the starting load at each reversal of the shuttle, by starting load at each reversal of the shuttle’s substantially arresting rotation of the idle driven movement to be frictionally absorbed by the re 25 ,member -before said holding means is rendered spective frictional braking connection and the shuttle then positively actuated by the respective active. 2. Motion converting mechanism comprising a positive driving connection. 5. Motion converting mechanism comprising a shuttle; a rotary driving member adapted to be rotated in >one direction; a plurality of rotary shuttle; a rotary driving member; a plurality of 30 rotary driven members, co-operating with the driven members; means . operatively connecting said driven members to the shuttle for movement driving member; and mechanism co-acting with axially therewith yet rendering the driven mem lthe driven members and shuttle to effect recipro bers free to rotate idly with the driving member; cation of the latter in response to rotation of means by which the driven members, when held the driving member in one direction; said mecha 35 nism including means for frictionally braking 35 against rotation, are adapted to be axially 'fed in movement of the shuttle at each reversal thereof opposite directions by the driving member; means for alternately holding the driven‘. members in 'order to gradually absorb the starting load: against rotation by establishing a positive driving and means for positively actuating the shuttle connection between >the respective driven member during the remainder of each stroke thereof. I claim: ' v l. Motion converting mechanism comprising a shuttle; a rotary driving member adapted to be 10 rotated in one direction; a plurality of rotary driven members; means operatively connecting said driven members to the shuttle for movement axially therewith yet rendering the driven mem bers‘free to rotate idly with the driving member; means by which the driven members when held against rotation are adapted to be axially fed in 6.- Motion, converting mechanism comprising a 40 shuttle; a rotary driving member; a plurality >and friction brake means c'o-actable with the ' shuttle and idly rotating driven member at each of rotary driven members co-operating with the driving member; and mechanism co-acting with reversal of the shuttle, to bring said driven mem -ber substantially to rest prior to establishing the the driven members and shuttle to effect recip rocation of the latter in response to rotation of 45 45 positive driving connection between said driven the driving member in one direction, said mech member and shuttle. _ _. 3. Motioxf converting 'mechanism comprising a anism including friction brakes one for each shuttle; a rotary driving member adapted to be driven member, for braking movement of the rotated in one direction; a plurality of rotary shuttle at each reversal thereof; and jaw clutches, one for each driven member, correlated with the 50 50 driven members; means operatively connecting respective friction brake to positively drive the said driven members to the shuttle for movement shuttle following braking thereof by said brakes. ~ axially therewith yet rendering the driven mem '7. Motion converting mechanism comprising a bers free to rotate idly with the driving mem ber; means by which the driven members', when shuttle; a rotary driving member; a plurality and thev shuttle, whereby to reciprocate the latter; 55 held against rotation, are adapted to be axially fed in opposite directions by the driving mem ber; jaw clutches co-actable with the shuttle and rotary driven members; friction brakes co-actable with the shuttle and rotary driven members; and .actuating means operatively connected to ~said clutches and brakes to disengage the jaw" clutch and the friction brake for one rotary driven mem ber and successively engage the friction brake . and jaw clutch for the other rotary driven mem 65 ber or vice versa, whereby to reciprocate the shuttie and cause the starting load at each reversal of the shuttle to be'gradually absorbed by the respective friction brake, and the shuttle then positively actuated by the respective jaw clutch.' 70 4. Motion converting mechanism comprising a shuttle; a rotary driving member adapted to be rotated in one direction; a plurality of rotary driven members; means operatively connecting said driven members to the shuttle for movement 75 axially therewith yet rendering the driven mem- of rotary driven members, co-operating with the driving member; and mechanism co-acting with the driven members and shuttle to effect recip 551 rocation of the latter in response to rotation of the driving member in one direction; said mech anism including friction brakes and jaw clutches 60 for each driven member; and actuating means operatively 'connected to said brakes and clutches to disengage the brakes and clutches for one driven member and successively engage the fric tion brakes'and jaw clutches for the other driven 65 member or vice versa. 8. Motion converting mechanism comprising a shuttle; a rotary driving member adapted to be rotated- in one direction; a plurality of rotary driven members; means operatively connecting 70 " said driven members to the shuttle for movement axially therewith yet rendering the driven mem bers free to rotate idly with the driving member; means by which the driven members when held ' against rotation are adapted to be axially fed in 75 5 anale-s opposite- directions 4by the `driving member; ljaw 'v a shuttle; a rotary feed shafthaving right'and clutches co-actable `with the shuttle _and rotary driven members; friction brakes Vco-»actable with (the shuttle and rotary driven members; actuat# left rhand threads; right and left hand threaded nutson the feed shaft; means operatively con necting' the nuts with the shuttle for movement ing means 'for said clutches and -brakes having ax ’ therewith yet rendering the nuts free to rotate ially yieldable operative connections to said jaw idly with the feed shaft; jaw clutchesv for oper `- lclutches and toggle connections to said friction atively connecting theI nuts to the shuttle; fric brakes, and means for operating said actuating tion brakes for operatively connecting the nuts to means to disengage the 'jaw clutch and the fric the shuttle; and actuating rmeans operatively con 11o tion >brake for one rotary driven member and suc nected to said clutches and brakes to diséngage 10 cessively engage the friction brake andjaw clutch the friction brakes and Jaw clutches for one nut for the. other rotary'member or vice versa. and successively engage the friction brakes and 9. Motion converting mechanismcomprising a Jaw clutches for the other nut or vice versa to shuttle; a ‘rotary‘ driving member `adapted to be alternately hold one nut or the other against . rotated '-in‘ Áone directioruva-«plurality of‘ ‘rotary-` rotation for co-action with the feed shaft in re 15 ciprocating the shuttle. saiddriven `driven lmembers; f members [means ïî toi* “the operativelyV ‘if-shuttle ’for ‘connecting - ‘movel‘ 1 f 12. Motion converting mechanism comprising a shuttle; a rotary feed shaft having right and left hand threads; right and left hand threaded nuts menta-axially!therewith'fyet rendering the driven members free to' rotate idly withthe driving mem A20 ber; means by which the driven members, when on the feed` shaft; means operatively connecting 20 held against rotation, are adapted to be axially _ the nuts with the _shuttlefor movement therewith ` fed in‘opposite 'directions by the driving mem yet rendering the nutsfree to' rotate idly with the ber; _jaw ¿clutches co-act‘able with the-shuttle feed shaft ; jaw clutches for rorxeratively connect~ ing the nuts to the shuttle; friction brakes for operatively connecting the- nuts to the shuttle; 25 actuating means for _.said clutches and brakes \ andl rotary driven members; -friction ~brakes co 25 ac’table 4withthe shuttle and rotary driven mem-A , bers; actuating'mean's >operatively. »connected to having -axially yleldable. operative connections to said 'jaw clutches. and toggle connections to said clutches and ¿brakes Ato disenga‘ge the jaw clutch and.- the friction _brake forone Vdriven mem 'Y ber and successively engage the friction brake andI 30 jaw> clutch for `the otherldriven member or vice versa; lmeansffor latching the actuating means in 'said friction brakes;'and means >for operating said actuating means to dlsengage 'the friction brakes 30 and jaw clutches for lone Anut and successively one position or‘another; means for storing energy A engage the friction brakes and jaw clutches for to moveï'the actuating means from one of its vv'the other nut‘or‘vice versa, whereby to hold- one positions tothe other or`vice versaf‘according as nut or the other against rotation and thereby ' thegshuttle approaches one predetermined ex treme position or the other; and means `for Yre - reciprocate the shuttle. - » 13. Motion converting mechanism` comprising ` leasing "the latchingmeans following the storing a shuttle; a rotary driving member; and mecha nism co-actlng` with said member to reciprocate ' of energy vasvaforestated in order that said actu „ 35 ., ating means ,will bev moved to' actuate the clutches the latter in response to rotation of the member „10. Motion _converting mechanism comprising in one direction; said mechanism including 40 means for frictionally absorbing the starting load a, shuttle; ya rotary Adriving member adapted to>` be . at each reversal of the shuttle; and means corre- v_ ‘s rotated in one direction;` afplurality of. rotary lated with the first means _to positively drive the driven‘i’nembers; means operatively connecting' shuttle following said` action of the last means. 14. Motion convertlngfmechanism comprising 45 §45 said driven members to theshuttle for movement > axially therewith yet rendering the driven mem a shuttle; a rotary driving member; and mecha bers free to rotate idly with`I- the driving member; nism co-’acting with said member to reciprocate means by which the drivenmembers, when heldI the `latter in response to rotation of the member against rotation, are adapted to beaxially fed in in. one direction; said mechanism including fric 50 opposite directions~ by theïdriving member; jaw> tion brake means for smoothly braking the 50 .clutches‘co-actable with theshuttle and~rotary shuttle~ by'gradually absorbing the starting load; ' driven members; friction brakes co-actable with ' and jaw clutch means correlated with said fric-"the shuttle and rotarydriven members; actuating> l tion brake means to-positively actuate the shuttle ï means operatively connected tosaid clutches and following said action of the friction brake means. 55. brakes .to disengage the jaw clutch and the fric , _ ‘15. Motion converting mechanism comprising a 55 " tioribrake for one drlvenmember and-succes _ shuttle; Va rotary driving member adapted to be sively engagethe friction brake and jaw clutch for r' rotate‘din> one direction; a plurality of rotary driven members; means operatively connecting « ' ffort the latching other driven -the actuating @member means or viceinversa; oneeposition ímeans said driven members . to the shuttle for move or another ;‘y means for`storing energy to' move-the mentaxially therewith yet rendering the driven actuating means from one fof its‘ positions ltothe '. members free to rotate lidly with the driving other >or vice versa according as the shuttle. ap member; -means byllwhich the. driven members, > ç-proa'ches one predetermined A'extreme position or > when held against-rotation,A are adapted'4 to `be 60 ' theother; meansfor releasing the _latching means _ following‘the storingof energy as aforest'ated in ' > . .order that vsaidactuating meanswill be movedto axially fed- in opposite directions bythe driving member; jaw clutches co-a`ctable _with »the yshuttle and- rotary driven->î` members; „ frictionl asY , ' - lactuate'the'ïclutches'and brakes; ‘means providing"~ „brakes cov-actable'with the> .shuttlel and rotary , ‘afyieldablef operative connectionaaxi'ally between 'i driven members; àaetuating means operatively connected to ~said clutches ‘and ‘ brakes to~ i meansfior ,maintaining „the V_jaw yclutches >disen-r ’ disengage„;the jaw >clutch and lthe friction" 70 ‘1 '.gag’ed l until the,- respective friction brake is' fully> `brake for one ‘driven member and succes-v said Aactuating meansA vand jaw 'clutci'iefs;‘l4 and enga'gech and' ,causingVv the last means "to 4store Vslvelyengage the-friction brake and jawclutch , for 'the other driven memberfor‘vice versa; clutch.` . . _ . llnMotion converting mechanism comprising means for Ylatching the actuating meansin one s position or'another; means forstoring'energy 75 6 < 9,128,184. ' to move the actuating means from one of its po sitio to the other or vice versa according as the shutt e approaches one predetermined extreme position or the other; means for releasing the latching means following the storing of energy as aforestated in order that said actuating means will bemoved to actuate the clutches and brakes; means providing a yieldable operative connec~ tion axially between said actuating means and Jaw clutches; each of said :law clutches including a fined jaw carried by- one of the rotary driven . members, and a movable :law yieldably connected operatively to the actuating mechanism by the last means; the rotary driven members and the respective movable jaws having stop pins and recesses co-acting upon full engagement of the driving member; and mechanism co-acting with n the driven members and shuttle to eil'ect recipro- , cation of the latter in response to rotation of the driving member in one direction: said mecha nism including friction brakes and jaw clutches for each driven member; and means co-acting with the actuating means and jaw clutches to prevent engagement of the latter until the re spective friction brake is fully engaged and -brings the idly rotating driven member substan 10 tially to rest, whereby to smoothly reverse the movement of the shuttle. 18. Motion converting mechanism comprisingl a shuttle; a rotary driving member adapted to be rotated in one direction; a plurality of rotary 15 driven members; means operatively connecting said driven members to the shuttle for movement axially therewith yet rendering the driven mem bers free to rotate idly with the driving mem 16. Motion converting mechanism comprising ber; means by which the driven members when 20 a shuttle: a rotary driving member; a plurality held against rotation are adapted to be axially oi' rotary driven members co-operating with the fed in opposite directions by the driving mem driving member; mechanism co-acting _with the ber; jaw clutches co-actable with the shuttle and rotary driven members to hold the latter against driven members and shuttle to eifect reciproca vtion of the latter in response to rotation of the i rotation; friction brakes co-actable with the '25 driving member in one direction, said mechanism shuttle and rotary driven members to bring the including friction brakes one for each driven latter substantially to rest; actuating means for member, for braking movement of the shuttle said clutches; means for operating said actuat prior to each reversal thereof; jaw clutches. one ing means to disengage the :law clutch and fric 30 for each driven member, correlated with the re-v tion brake for one rotary driven member and spective friction brake to positively drive the successively engage the friction brake and Jaw shuttle -following braking action of the friction clutch for the other rotary driven member or brake and means for preventing engagement of vice versa; and means co-actingwith the actu the Jaw clutches until the respective friction ating means and jaw clutches. to prevent en 35 gagement of the latter until the yrespective fric 86 brake is fully engaged, and brings the idly» rotat ing driven member substantially to rest, whereby tion brake ,has brought the idly rotating driven to smoothly reverse the movement of the shuttle. member substantially to4 rest, whereby to 17. Motion converting mechanism comprising smoothly reverse the movement of _ the shuttle: a shuttle; a rotary driving member; a plurality 40 EDWARD C. EKBTROMER. ‘o of rotary driven members. co-operating with the friction brakes, to release energy stored by the last means.v so'as to engage the respective :law clutch. - ` ' '