US1997170A - Draft gear for railway vehicles - Google Patents

Description

vApril 9, 1935.

' HL EGEN 1,997,170

DRAFT GEAR FOR RAILWAY VEHICLES Filed D60. 13, 1932 4 Sheets-Sheet l INVENTOR ATTORNEYs pnl 9, 1935. H. Eel-:N 9 1,997,170

' DRAFT GEAR FOR RAILWAY vEHcLEs Fi'Led Dec.v13, 1952 4 Sheets-Sheet 2 n IZ f2., (i1 i INVENTCR MAb/Zvw vATTORNEYS H. EGEN 1,997,170

DRAFT GEAR FOR RAILWAY VEHCLES Filed neo. 13, 1932 4 sheets-sheet l s April 9,1-93'5.

ATTORNEYS.

April 9, 15935.

H. EGEN DRAFT GEARFOR RAILWAY VEHICLES 4 Sheets-Sheet 4 Filed Dec. l5, 1952 l Il lNvENToR ATTORNEYS` Patented Apr. 9, 19357Y DRAFTr GEAR FORYRAILWAY VEHICLES Heinrich f Egen, Essen,

, Germany, assigner toV Fried, Krupp Aktiengesellschaft, Essen, Germany, a corporation of Germany c c Y Applicationeeember 13,1932, serial no. 646,944 Y, ,Y 'j In Germany January 25, 1932 v io Claims This invention relates to elastic draft gear for railway vehicles. Such draft gear commonly oonsists of av pair of draft or buing rods arranged in tandem and extending substantially the length of the car or vehicle with a lost motion connection;

between the inner `ends ofthe rodsgspring means being provided tooppose relative movement of the rods and additional spring means being pro? vided for transmittingv stresses from each rod toV the vvehicle body. .f

An object of this invention isV a 'compactarrangement of thevarious springzmeans, :thereby making'the elastic draft gear-*morevadaptable to short cars than heretofore. Y

According to the present invention, the lost motion connectionibetween the two rods and the spring means opposing relative movement' of the two rodsare arranged within the confines of the spring means for transmitting stresses from the draft gear to the vehicle body, Vthe entire' assembly being arrangedY centrally of. the rvehicle body. This arrangement of frame and rod springs reduces the space requirements of thegsame and makes the draft gear adaptable for short cars.V

specication and accompanying drawings'wherein: J

Figs. 1 to 8 inclusive are axial sections through different embodiments ofY theinvention;`

Figs. 9 and l0 are sections on the lines `9---9`and i to the left by force transmitted'through the right ivfl0 of FigVS respectively, and

Figs. l1 to 13 are views-similarltowFig. 8,

with the elements in different positions.

but

draft and buifer rods A are provided with collars a against which are pressed spring plates lb' by helical springsiB; Longitudinal 'frame bars-C off the vehicle are formed with recesses c into whichextend the spring platesb'.' The springs `B alsovr bear against spring plates b3 left between recesses c3 formed in the frame members C and into which extend the spring plates b2. A follower 4 a2 is rigidly connected to each rod A and a helical 5 having abutments f2 which are engaged by the Other objects, novelfeatures and advantages"of-A this invention'will be apparent from the following kReferring now more especially? to Fig.V l, thespring D arranged coaxially of the' rods A pressesl against each follower a2 a spring plate d' slidablyV followers d2. A. tube G receives the inneriernds lof Vtherods A andserves to limitcompressionofthe spring D. l f Y When both rods A aresimultaneously subjected to-inward push; the two'followers a2 and plates d' if' are moved toward. each other, thereby compress-V ing the spring D and such movement may. oo nj tinue'until further compression of. the spring D is prevented bythe tube Gf.' The rodsE move freelythrough. the kfollowers a2 and the plates dV andthe spring D is effectivev only to transmit strains fromV o ne rod to theother.` The collars a move the` spring plates Vb toward eachothen' thereby: compressingxthe springs Biand-'as the springsare opposed to each other, no accelerating 15, forces will vbe' applied tothe vehicle with equal Y strokes of the rods A.

When draft stresses are applied simultaneously to the rods A, each follower a2 carries `along by;

means of the rods-E, the opposite spring plate 11520 scythat'againl the spring D is compressed, but transmits no force to the vehicle.. Simultaneously,

' the portions of the sleeve'F are moved outwardly by thefollowers a2 so that each spring plate b2 Y compresses the corresponding` Vspring B, but no acceleratingforce 'is ltransmitted to the vehicle structure upon equal strokes of the rods jA.

The application ofjinward 'push to the right rod A causes compression .of 'the corresponding spring B by means of the spring plate Yb'.V Iffthe v30 left rod A oifersno resistance, litwill be displaced f follower a2, lright Aspring plated'. spring D, .left

" spring plate 4d'anda left follower a2, without any1 appreciable compression of the spring D. The -35, 1 left follower a2 then. transmits force through the left portion lof ythe sleeve F by means ofthe abut-V ments Fand-'fito the left spring plate b2 which, in Y turn,` compresses Vthe left spring B. Forces are. therebytransmitted from the draft gearthrough the two springs B to the vehicle and accelerate Vthesame.' l

Outward pull exerted on the right rod causes the right follower a2 to move to the right and carry with itfthe right half of the sleeve-Fsc that-the V4:5411 y right: spring B is ccmpressedandtends toaccelerv atethe vehicle. At the same time, the movement of thefright rod A is transmitted to the left rod A v 'through' the 4linkage consisting of VVright follower 1 "a2, rods E, left lispring plate d. spring D,-right 50 springplate d', rods'E and leftfollower a2. andthe Vleft rod Ay through the' medium of the left spring plate b', .compresses the. corresponding Yspring B Y and also tends'to accelerate the vehicle.

`In the embodiment sho-wn in Fig. 2, springsJ l.

and is. effective to limit compression of the l5 lowers k and the spring plates k3.

are disposed between the longitudinal frame members -I-I of the vehicle and bear at one end against the followers 7c next to the rods K and at the other end against abutments hf on the frame `5 members H. The followers Ic operatel in a simi.-

lar manner to the first `embodiment through the niediurnwof rods k2 and spring plates 7c3 on a springl L disposed around the inner ends' of the rods K; A tube G` receives the inner ends of the rods K spring L.

If both rods K are simultaneously .subject-edt@ inward push, they will compress the spring L and the two springs J through the mediumk of 'the foljv When the. rods K are simultaneously subjected'to outward pull, then as in the case of the rst ',mbodiment, the spring L will also be compressed while .the springs J will be free from load. In both .cases no accelerating force is transmitted to the vehicle.

In the case of inward push on one rod only, the corresponding follower lc ywill compress the .adjacent spring J, while the remaining rod K will. be displaced through thelinkage between the'two rods K',the remaining spring'J being unaffected..

In the case of a pull on one-rod K,-the 'actionwilL be just reversed. *1

" `Inthe embodiment disclosed inFig. 3, springs M .bear against abutments h and against spring i plates m which in turn engage followers lc mount-1 f ed on the draft rods. Rods k2 connect each fol-i lowerc with the opposite 'spring plate .11i/andv pass freely through the remainingl'spring plate.` With this arrangement, simultaneous.pullspr `1pushes on the draft rods result in compression of the springs M as well as the spring L;

In the embodiment shown in Fig'. .4, the draft and' buffer' rods N are connected through` the medium of a tube n' having end flanges 11,2 and1i3.; 40 1Two spring plates 114 and 11.5 are movably mount.

ed on the tube 11, and a helical spring O is.in.

terposed between these plates. The. longitudinal frame members P are provided with abutments. p for engagement with flanges n2 anda.3 and -with abutments p2 for engagement by the spring plates 114 and n. A spring O surrounds the inner ends of the rods N and is interposed between spring plates q slidably mounted. on the rods N, these spring plates being connected Vwith the .tube

Nand affollowerq3V by rods q2, the tube N and the follower q3 being rigid respectively withthe leftrandright rods N. Y

rf-the two rods N are simultaneously.'subjected-1 toiinwarcll push, the=followers willlcarryalong' =the spring plates. q Y'therebyv compressing -the spring Q. In such movement,.the`tube n will be moved tothe left so that itsrflange 11.2 'willoarryl along`v the springV platem, thereby' compressing-; the springO.. In the caselof simultaneous pull-3 Gor? onbotlrrods N, the movement ofeachzofthese...A rods .will be transferredthrough the'nrods; q2 to the spring plate q of the other rods N so that the.vv

spring Q will againbe compressed. Also,` the tube *NiV will be moved to the left, thereby causing 551lcompression of the spring O through correspond ing movement of the flange 112.

An inward push on the leftrod N'causes the flange 112nofthe .follower N 'to compress the spring O through the Vmedium ofithe'plate` '114'.f S-while the spring QremainsY unaffected..

In the case of inward push on the right rod N this. rod Vthrough its followers and. thespring plates q' will first remove the spring Q' and also' .ange g4. i

the right rod'N. tothe left, theflangenzcarrying 'Ialongthe plate 11.5 and compressing the sprii'igfO.

In the case of an outward pull on the Aleft rod N, movement of the rod will be transmitted through the tube N' and the nange n3 thereof to the plate 115, thereby compressing the spring O. Upon outward pull on the right hand rod N, the

tuben is moved through the linkage comprisingvrods q2, left spring plate qf, spring O, right Vspring. plate'ql, rods q2 so that its end ange n2 .cooperates with. the spring plate n4 to compress Y,thespring O.

"The embodiment shown in Fig. 5 differs from tube R corresponding to the tube N of Fig. 4 forms -a single piece-with a spring plate R arranged on the left draft rod N. 'Ihe operation of the" springs of this embodiment is substan- .tially the same'as previouslydescribed.

.the-.embodiment shown in Fig. 6, each of the two draft and buffer rods S are provided with two collars S and S2, each pair of which serve as abutments for. a pair of spring plates t and t2 arranged on theinner Vends of the rods S. Between each pairof plates t and t2 there is arranged a helical spring T which maintains the plates-tf. and t2 in contact with thejcollars s and. s2 and with abutments u', u2 and 11.3

. of a. tube U which'surroundsvthe inner ends of the rods S. UvThe tube U is provided with end flanges a4 and 11,5 which serve as abutments for spring plates 11 and 112 between which is arranged ahelical Vspring V surrounding the tuberU.

Y Uponinwardpush on both rods S, the spring plates-tl.will-'compress the'springs T against the spring plates t2, but no Vload is applied to the springs V. Upon outward pull on both rods S,

' the. plates vt2 will compress the spiings T against the plates t1l without loading the spring V. Upon Outward pull or inwar'dpush on only one of the rods S,-the tube Uewill be moved in one or the other-direction vunder the action of one of the springs .T 4and accelerating force will be transmitted fromV the `tube Uto the vehicle body Vthrough the spring V...

The embodiment shown in Fig. 7 has two draft and bufEer.rods-;W to. which .followers w' are rigidlyrconnected. On the ends of the rods W thereare mounted tubes w2 which are surrounded by a strong helical spring X. The springs X bear at r4one rendagainst Yspring plates X slidably mountedon the'rods W and at the other end against the intermediate wall y of a tube Y on which are arranged two spring plates vy2 with a helical vspring 113. interposed between said spring plates.

z compressingthe spring g3 and thus transmitting forceresiliently from',v the 'draft gearto the ve- ,Y hicle.y UponY pull-on one rod only, compression of the spring 1/3 is effected through the linkage com prisingncollars y,.draftrods w3, spring plate m1, spring X,Vv intermediate wall y1,. tube Y and AVIn the embodiment shownin Figs. 8 tol`3, one

Eachy of thel followers w is connected .through draft rods w3 withthe spring plate a." of

`thai-shown in Fig. 4 only by the fact that the IIO 1,'9'972170- end of the draft'andbuiferrod) Iis' inthe form" arm Sycarries'alongther abutment `-member k-IIIQ- of a tubular sleeve 2 in which mvably-Inounted' the second draft and buffer rod 3.V The 'rod 3 isprovided withA two rigidly connected arms [and 5,--

arranged at right angles toea'ch othenY The arm 4 is guided in two opposed longitudinal apertures `Ii'- of the sleeve 2 and extends into longitudinal Iepertures of a tubular Yabutment member 'Ifslidably supported on the sleeve 2. 'Ih'earrnfFS` is also guid'V ed in two longitudinal apertures of the 'sleeve2` and extends into longitudinal apertures 9ofan abutment member IIJ slidably mounted'- o'nthe sleeve 2. Two additional arms II-'Vand I2A are sethe abutment member III.l Against eaCh'of-the abutment meinbersl--and Ibears the 4end of the helical spring Il, the""other end'of which bearsY against a rib I8 inthe tube I9. The'tub'e- I9'is provided atV both ends'with'flanges Y20 and 2liv against which spring plates'23 arid'24 areepressed by a helical springZL surrounding-the tubeIB. The frame members Z'I'of the vehicle arerprovided with abutments to be 'erigagedlby the fiangeshZIl and -EI and by the abutment-members?? andfl and alsoare'providedwi'th abutments 26' tol engaged'by the spring plates '23and241` free to move, the arm 5 will fsl'ide in th'elongituf dinal apertures 9 to its limit position(seejfjig.jll)Y j which position is reached when iten'gages'the44 ends ofthe longitudinal apertures, while the abut ment member lil bears against the abutmentsY 2 5- of theV vehicle structure.- f 'f During such movement,lt,he arm 4' carries along the abutment member whereby the springI'I is compressed and through the'mediumof'jthe ,tube

I9,the spring 22 also'is compressed. lhe'longitudinal apertures are so dimensionedfthat'i'ipon engagement of the tube I9V with the abutment 25 of the vehicle frame members-21, all'the 'springs are completely compressed. If the rodi' is pushed inwardly with the rod 3v free to'move, the armsV I4 and I5 will engage the leftV ends of4 the longif,k tudinal apertures I 6 and will carry'alon'g thev 'abutment member I0, thereby compressingft'he" Afight spring' I7 until'the stroke limit is reachedin a similar manner as above described with respect to rod 3. The spring 22 is compressed through the medium of the tube I9, flange 2| and spring plate 24. Upon pull only on the rod 3, the arm 5 bears against the left end of the longitudinal aperture 9 and compresses the spring v22 in a manner similar to that previously described. Upon a one-sided pull on the rod I, only the arms II and i2 carry along the abutment member I and compress the spring 22 through linkage comprising left spring II, rib I8, tube I9, flange 2D and spring plate 23. In all of the foregoing eX- amples, force is transmitted resiliently from the draft gear to the vehicle body.

If both rods'I and 3 are pushed inwardly, the arm 4 compresses the left spring I'I through the abutment member I while the rod I carries along the abutment member I0 by means of the arms I4 and I5, thereby compressing the right spring II. Overloading of the springs II is prevented by engagement of the end of the rod 3. with the end of the sleeve 2, thereby rigidly coupling the( rods together (Fig. l2).

The spring 22 is not acted upon. On the application of outward pull toboth rods I and 3,

thereby vcornygiressing the rightspring I1 while'the rod I Vthrough its 'arms I I; and I 2 'y moves the abut ment member Ito' the'fright',` thereby compressi ing the rightspring);l ,Again the-spring 22 is 'not affected.

In the moeieeatiqnvdiselsed' in FigsftzgisV inclusive, the A'distance i between the i abutment' members 'I and III/'and the abutmentsf25 onthef vehicle'is less than thedistance betweenftliefends!v of thetube I9 andthe abutments 25,

` Therefore, movement of the abutment members v is arrested'beforernovementof the tube I8 and therefore compression isV effected ofboth springsy II as wellfas the spring-22g g Ther'efore,all'thfreeVv springsare available for transmitting accelera ff lg. force from the draft geariothevemig I claim: Y

alined draftrods movable toward and awayffrem 1. In draft gearfor railway vehicles'apairof" tion' connection between theinner endsbf said Y rods limiting relative Amovement of'said rods, r `e,

silient means tending to ppQSe-relative move-y ment of said rods in either directioman'd resilient means interposed betweenjsaiddraftrods the'vehicle for transmitting `force froxn the forf mer to the latter, said lost motionnconnectionand; said first named .resilient means being 'arranged y y, concentric ofY and If therod'is pushed inwardly vwiththe'f'rodl Within l Said last. named; reSlf entmeans.

2. In draftgear for railway vehicleaafpair of I draft rods, a lost motipn .connectior'rA betweenthe inner endsof saidy rods, resilient meanstend-4 ingV to oppose relative inovement ofisaid rods, add ditionalr resilienty means coaxial with` and sur-i rounding said lost ymotion connection, followersY forfsaid lastrnamed resilient'v means, abutments= on the vehicle engaged by said'followers'an'd cou?,k

pling means'between said lostmeztionconnection and said followers for transmitti the draft rods to said vehicle,

' 3. In ,drafi-gear for Yrailway vehicles,apair off;

draft rods, al lost motionconnection betweenjthe inner ends of saidrods, resilient means 'opposing relative 4movement of said rods, said lostvm'otifon y connection including plates jxed to said rods, al, two-:part tube surrounding said llostjmotion zeon'-v I' nection, end anges on said tube engaging s aidi tion connection including plates fixed to said.

rods, two abutting tubular members surrounding said lost motion connection, anges on said tubular members engaging said'plates, abutments on the vehicle, said tubular members and said draft rods, followers mounted on said draft rods` and said tubular members, and resilient means linterposed between said followers, said followers being engageable with the abutments on said" vehicle, tubular members and draft rods. Y

5. In draft gear for railway vehicles, a pairof rods, a lost motion connection between the inner ends of said rods, said 10st motion connection comprising a tube surrounding the inner ends of said rods and having inwardly projecting abut-r ments, followers rmounted on said rods and engageable with said abutments, resilient means interposed between saidl followers, outwardly extending abutments on said tube, abutments on interposed between said last named followers. l

7.,In draft gear for railway vehicles, a pair of.. draft rods, a lost motion connection between the;

said vehicle, followers mounted on said tube, 'each follower being engageable with both a tube abut;`

ment anda vehicleabutment, and resilient means interposed Abetween said followers. f a

y6. In draft gear for railway vehicles, agpair of draft rods, a lost motion connection between the inner ends of saidV rods, saidlostV motionlco'n-V nection comprisinga sleeve on the inner end ofk one rod receiving` the inner end of the otherrod, slotted abutment members Yslidably,mounted on said sleeve, arms onfsaid rod and sleeve extendffv ing into the slots vof said abutment members, a

tube surrounding saidsleeve and `having, an inwardly projecting. central annularilange, re-v silient means-interposed between said abutment members and said flange, outwardly projecting'` abutments onV said tube, abutments on said ve.v

hicle, additional followers mounted on said tube, 1

each follower being engageable with a tube abutment and a vehicle abutment and resilient means inner ends of said rods, said lost motion connection comprising a sleeve on the inner end of one rod receiving the inner end of the other rod, longitudinal slots'in said sleeve, slotted abutment members slidably mounted YonL said sleeve, arms on said rod extending ,through theslots in said sleeve into the slots ofv said vabutment members,

arms on said sleeverextending into the slotsV of. said abutment members, a tube having a central inwardly -projecting annular flange, springs interposed between said abutment members and said flange, outwardlyprojecting,abutments on said tube, additional followers mountedon said tube', each follower being engageable with a tube' abutmentY and a vehicle abutment, resilient means interposed between said followers, andadditional vehicle abutment members engageable by said abutment members. l ,l

8. In draft gear rforrailway vehicles, a pair of draft rods, a lost motion connection between the inner ends of said rods, said lost motion'con- :nectionrcomprising a sleeve on the inner end of one rod receiving the inner end'of the other rod, slotted abutment members slidablyj mounted onV said sleeve, arms on said rod and sleeve extending into the` slots of said abutment members, a tube surrounding said sleeve and having an in- Vwardly projecting central annular flange, resilient means interposed between said abutment members and said flange, outwardly projecting abutments on said tube, abutments on said vehicle, additional followers mounted on said tube, each follower Vbeing engageable with a tube abutment andy avehicle abutment, and resilient means interposed between said last named followers, the distance betweenl the abutment members and the last named vehicle abutments being less than the distance between the ends of said tube Aand said last named vehicle abutments.

9. Indraft gearl for railway vehicles, a pair of draft rods, a lost motionv connection between the inner ends `of said rods, said Alost motion connection comprising a sleeve on the inner end of one yrod receiving the inner end ofthe other rod, longitudinal slots in said sleeve, slotted abutment members slidably mounted on said sleeve, arms on l said rod extending through the slots in said sleeve into the slots of said abutmentl members, arms on Vsaid sleeve extending into the slots of said abutment members, aY tube having a central inwardly projecting annular flange, springs interposed between said abutment Ymembers and said flange,

abutments. Y Y

10. In draft gear for railway vehicles, a pair ofY alined draft rodsmovable toward and away from each other from a position of rest, a lost motion connection Abetween the inner ends ofA said rods limiting the relative movement thereof, springs coaxial with said rods and surrounding the inner ends thereof, connections between certain,

of said springs and said rods for opposing relative movement of the rods in either direction, and means connecting the remainder of said springs with the vehicle and lost motion connection for transmitting force from the rods to the vehicle.

Y VHEINRICH EGEN.

said last named vehicle

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