US1224866A - Draft-arm and center-sill reinforcement for underframes. - Google Patents

Description

. PATENT 1 ROBERT' Ennis, or UNIVERSITY, MISSOURI, AssIGNoR To AMERICAN can annv FOUNDRY COMPANY. OF ST. LOUIS, ,MISSOURL A CORPORATION OF NEW ,IEELSEY.`

DRAFT-ABM AND CEN'rERfsILL lRnINmntoiiivriiN'r Fon UNDBFRAMES.

To all 1c/:0m 'it may foncer/i.: a Be it known that l, Ronnii'r G. liLLIs, re-

States, have invented certain new andusefulv lmprovenients in Draft-Arms and Ceii` ter-Sill Reinforcemeiits for Undertraines,

of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appeitainsto` make and to use the same, referencea'being `had to the accompanying drawings, a'fhich illustrate v,the preferred form of the iiivention, ,though it is to be understood thatftli'e invention is not limited to V the exact details Aof,construction shown and described, as it is obvious that various modilications thereof will yoccur to persons skilled-'in the'art. In said drawings:

Figure l is a plan view'rof somewhat 'less than half of an underfraine infwliichl my [draft arin and centersill reinforcement incorporated, the remainder of saidk underframe being constructed substantially iii'accordance with what is shown In the illustrated portion and the draft arml being opv liositely directed;

Fig. 2 section of the construction shown in Fig. 1 3- Fi'g. 3 is a transverse section' throu'glrthe center sills and the draft arm and center sill reinforcement,beingtaken on line of Fig. 2 and viewed in the direction of the Fig. 4 is another transverse view through the center sills and draft arm and is taken on the line 4 4 of Fig. Q lookingin the opposite direction;

Fig. 5 is a. fragmentary half-plan View of a modified form of my draft arm and' center sill reinforcement;

section of theparts shown in` Fig.v 5 5"' and F ig. 7 is a transverse sectioiioflanoth'er modification showing thedraft ariii'iii comr bination With a single girdei serving as 'they center sill reinforcement.

The present invention relates to la draft arm and center sill reinforcen'ieiit andhas Specification of Letters Patent.

' Appiieation inea Mayas, 191'6.

is a central vertical longitudinal "cated in Figs. 1 aIidQ.

VPatentedMay 1., 1917-... sriai'nofsaui.

capable of resisting heavy coupling shocks, is contemplated.

' Another object is to so construct thedraft arn'i and center sill reinforcement that it shallA he readily vapplicable either to old or new cars. v'tilts use in 'connection lwith the cars of the earlier types, which have already` given 'long service, and the wooden ander-.l frames-ot which were designed 11i timesV prior to the advent of long trains composed of heavy steel rolling stock and ponderous motive units, adapts the older cars to safe usage in coniunction with the more modern cars. built for more severe rail 'ay operating conditions. Referring to'tlie drawing, vthe dra-ftt'ar is pressed from a single rectangularplate and it is to be 'understoodvtliat said draft l arm, the end sill, bolster', etc., are to be dupliated at each end 'of the car. .For v(ainve'nience of descriptioii that p01 tionof the draft yarm intermediate thebolr,

sterand the next adjacent end sill is hereinafter referred' toI as the outer endr and the.

poiftio1i1 tlieieo'f from'l the forward edge of 'thebolster to' the end` intermediate. the ,bol

sters 'is referredto a'stlie inner ,end.

y In the drawing,'tl'ie horizontal web; l of `tlie draft arini'scontinuou rom the inner,-vl`

ll A, as indi-iv end-of said arm tothe end B indi aites'tlie usualbod f, bolster `and C the usual wood center silis stiil found in many old cars i'eniainingin service;

The inner end ofthe draft arrir comprises the web 1 before Vtreferred t0 employed asaI connector foi-tivo, spaced and relatively U- shaped center sill embracing portions D-D,`

each of which includes a' vertical portion 2,

ahoiizontal seat yupon which rests a Woot" n 4 A vsill C anda second verticalfportion 8 Iparal- Fig. is a central vertical longitudinalu lel'ing the vertical portion 9..

:'- Thje v'ei'ti #al draft arm ','ortion` and S,

respectively onl the iiiiiii' and outer faces .of

`the wood sills C, with tlicportions T 'form-. longitudinal pockets into Ialich are 'reif ceived said wood center sills.;

YBeginning approximately at the longitit .A

ioo

dinal median` line .of the holsters B; the,"

center sills.

illustrated in Fig. 3, the inverted U-shaped inner end of each draft arm, which is existent between pockets D-D and comprises web 1 and the inner vertical pocket walls 2-2, has a contour admirably adapted to receive the endportions of the sub-sills 11.

Said sub-sills 11 may be the commercial Z-bars shown, or any other suitable 1ongitudinal members. Their end portions project into the central inverted U-shaped portion pass horizontally ing them adequate strength to sustain any stresses they may be subjected to 1n service.

The top flanges are inwardly directed and are joined by a those of rivets 15 which connecting or cover plate P, secured thereto by rivets 15, or other fastening means. Thus, a channeled or inverted U`shaped cen` tersill reinforcement 1is created and'plo` vided with'outstanpding center sill-stiening flanges;

The lower horizontal portion of the inmner end of the' web of each draft arm lies upon cover plate P, and is secured thereto by pass throu h the top flanges of the' end portions of t e that are embraced by the central inverted arm. lVitliin the lapping portions of theter sill-reinforcing I U-shaped portions of inner end of the draft sub-sills 11, cover plate P and the inner end of the draft arm Webs 1, rivetspl are more closely spaced to improve the strength of the connection between these parts,

vThe lower outstanding flanges of the cenat 16 to the horizontal portions 7 of the pockets D. at the inner end of eachjraft arm. i

. center sills C seated in sid poc Near the outer edges ofthe bolstersvB, the contour ofthe At each bolster, the draft arm is secured thereto by vertical bolts 17, which pass through the bolster B, the horizontal portion 7 ofeach pocket D and .throu h the wood ets. s

webs 2 ofthe draft arm is modified. Said'webs gradually increase in depth, asindicated by the line K in Fig. 2, and the outer ends of the draft arm pocket portions are of modified contour, as also shown in said Fig. 2 and in the sectional view of Fig.` 4.

`draft "scription,

of the draft arm,

dated vby cuttin the bottom flanges of the Z-v fana sus,

of sub-sills 11 and voeive standard draft firmly uniting the of the Z-bar sub-sills 11- -erl unite the arts indica l Zh p Aof continui sill 4, phd be sub-sills 11 are rivetedAv Thus the draft arm is formed, within the zone of the draft' lugs L, of sufficient depth. to not only connect with the center sills and connect said sills to prevent spreading during bung, but also to support standard llgs adapted to receive well known type: o draft. gears. l e lug L shown is that of my Patent 1,042 416 of October 29, 1912, which is of a well lmown type and requires no further de- Infermediate the web portions 2 and the lower and more widely spaced portions 2 thereof are shoulders 5, which are accommo-y out n corner rtion of the wood center sil s as shown in lilig. 4.

e lower parts of 'the web portions 2* terminate in .horizontal outstanding finnges 6 which with the web rtions 2' und shouli fo 11;)

ders 5, opposite disposed' Z-sha d which are pe properly spaced to mars and which are rigidly connected toget er and to the center sill end portions through the inverted U- .shaped formation comprisin the web 1 and -inner verh'cal walls 2 2 oy the center sill pockets aforementioned. f

Horizontal bolts E extend through the just -mentioned verticaloportions 2-2 and the end portions -of w center sills C-C and are of such number. as

are eegiiired to prope lower portions 2 of theinner vertical Walls of each draft arm project outwardly beyond the outer ends of t e upper portions walls 2.and the outer end of the web 1 beyond the outer -face of ted b theend ing connec as rive te a. striking plate casting S. Said ylowertior-V are also connected to end sill A by connection a les 12 riveted to the outer faces of each o said portions 2*. A horizontal flangey of each 4connection angle 12 is se cured to the end sill A by a vertical bolt 13 p ililssing through both said. flange and end si From the foregoing, it is to be seen that the draft arms at opposite ends of the car are connected b center. sills suitably spaced apart, and a so by the center sill reinforcement comprising the Zshuped sub-sills`11y and cover plate P. Center sills C are also coupled with each other by the web 1 and the metal of the pockets of the unitary draft arms. Hence, a sufficiently rigid buffing column is formed adapted to resist cou-' plinfg shocks.

I in .extreme cases, due to a causes, the center. sills C should the center sill reinforcement will tain a strong connection between arms and will sufficiently well to prevent wreckage until repairs'can be made.

n the preferred form of said column the urther fail,

or other still mainthe draft preserve the buflng column spaced center sills of wood are securely connected -fio`i'ii.tlie end. sills to a considerable distance intermediate the holsters by means of relatively inllexible .iiiate'rials which pocket .andffstilfen said center.y sills within the portions thereof 'which necessarily Yreccive the niajor biilling stresses. while' preserviiigftjlieelasticityof the wood members intermediate the holsters to-absorb minor stresses by less frequent connections between the center sills and the center sill reinforcement.

)lfl it be desiredt'o connect the draft-.arliis' b viiiore rigid iiieai'isra single `:rirder as 20,

shown in Fie'.- i. may be employed extendine from bolster to bolster` iii which case tlie,bi"aclietsi23 Ariveted respectively to the horizontal portions 'i'.ofy the (.lraftarnis and to the web-'of suclrgiider. willv forni a .suitable feonnectioii." and brackets 23 will form supports for the* old woodcenter sills which sliould'be-secured to thedraft arms .y

and to said brackets. i

con'iiectionf between'l the inner end of` the draft arni'llan'd vthe'cci'iter sill rei'iijforceiiieiyitfw coiiip`i'"'ising `'the.'siib-sills'llj and the cover kplate lYeb l at they inner end ofthe dri'ift'ariii is not deflected downward', thus saving iefo-per-:itiini *necessary to reduce tlit"lie,i'lit oftheliiineriendsof the draft spaced'above the latter. ,Connection betweenthe' draft arn land `the center sill reinforce` meint,` comprising Atlie shaped sub-(sills Vll and cov er` plate l), isniadelby rivets ,'19 arrangied' in :horizontal rows` those of each row passing;'through tlie vertical web of one oftlidz-barsdl and theinner vertical wall 2 of tlievpoeketll) ofthe draft ariii that adjacent'`r liatfZrbibir; ,25, l r

ln vFigs, land 2a 'tie-plate ll, riveted to thefuiiderfacesof the' horizontal portions 7 ofitahe'sl'iaced pockets D of eacli `draft arm seento abiit an iiinerlupper edge of the eoiitiguoiis bolster l. Astlieie is al tie.-V

plate ill 4similarly Var anged adjacent,Teach bolster` anv 4tendency of eitherA draft arm f v i q y i the a'inisbeing*.connected bythe. center sill i'einfo'ijeenient',` to creep relatively. farther rearwardly'ofl its associatedJbolster,.is oveif.

come., Foraxaiiiplei,y ifranjinpact isY received by the-draft arm at one end ofthe car. il'willlbetransmitted through the center sillreinforcementto the draft --irni at the opposite end of the car. Tie-plate H fr and y( illustrate aviiiodified forni 'of'` andl'correspoml to those illustrated center sills fli'e, v a `ahnenjient of said pocket formingsportions;

carried by the latter draft arm ab'uts the' rdraft a'inis held adjacent the end sills and' comprising' alternately reversing channelf portions in sonic of which opposite end portions of the center sills lie-aiid are ,securely affixed7 and a reinforcementfor the center sills'extending between and rigidly `connecting the draft arins. i

, '.68 2. n combination in 4a car nndenfranie provided VVwithY end sills and a center.` sill., draft arms projecting inwzirdly from the endl sillsand provided with seats.par`tly yU-shaped and altering to have differentl`l forni, 'opposite ends `of the center sill beiiig retained by ksaid seats andlield lherel'iy A against transverse displacement,.and ineai connecting` said center sill"a,nd' dra'ft arn-i 3. .ln combination ina car 'undei 4 p r having end sills and spaced ceiiterfsills,

"' draft arms projecting inwardlyffroiii'theA end sills and each comprising; spaced pocket` portionsl in part embracingv opposed A.sidesl of' correspoi'iding eind portions off'each of, said spaced center sills and elsewhere ein-v bracing only adjacent sides tliereof, and' i otheri portit'njs preventing'tlie 'spreadingy of said pocketportions, and means securely at# "tacliingr said ceiivtei-sills1 and d 'raftarnis to Ae'ether, said center sills connecting' said l-.Ql'n combination in an underfifame, for.A railway carsliaving` an` end s ill.; a bolster and spaced center sills, a draft Varm coin-. prisine; yspaced pocket portions fitted togtliesectional shape of and embracing' a greater and lesser number o f sides of portions of. said center` sills in different parts ofsaid i pocket portionsa portion tyiiigsaid pocket portions against lateral. displacenient I and l other depending portions extending jbelwiarnl Y said end. sills and bolster adaptialA 4to sup-;

.5. In combination in arailway car underfranief having an end sill, aA bolster, spaced center sills and a striking plate., a draft arm y c'oniprisinnl spaced Ufsliaped pocketforiiiingl vportdraftrear elements, and nie-ans-rigidly]- securing said-center, sills to said` draft arm.

portions in which end portions of saidlfl portion` preserving tliel and depending draft sill-portions extend# lng forwardly vfrom said bolster, under said end sill and connected to said striking plate,

and means connecting said center sills and draft arm.

6. In a. car underframe having spaced center sills, a draftvr arm comprising a central portion of inverted U-shaped section and `portions on opposite sides of said cent-ral portion fashioned to form U-shaped pocketsadapt'ed to receive said center sills.

7."In combination in a car underframe having spaced center sills and an end sill, a draft arm' comprising spaced combined channel and angle-shaped pocket-forming portions adapted topreceive portions of said center sills, a portion preserving the aline- Ineut of said pocket-forming portions and draft 'sill portions, and means securely connecting portions of said center sills to mid p draft arm.

8.'In combination in a ear underframe having spaced center sills, a draft arm comprising spaced longitudinally extending pocket-forming portions adapted to receive end portions of the center sills, a portion preserving the given locations of said pocket-forming portions and draft sill portionsl extending below said pocket-forming portions, parts of the latter and said pocket ocation-preserving portion forming another pocket, and a reinforcement for said center sillsupon which they rest extending into the last mentioned'pocket and being secured to said draft arm.

9. In combination in a car underframe having spaced center sills, a draft arm comprising spaced longitudinally extendin exten ing pocket-forming portions in Whic said center sills lie, and a portion intermediate said pocket-forming portions uniting the same and coperating therewith to form another pocket, portions of said pocketforming portions projecting below the normal bottoms of the pockets and being fashioned into Z-shaped draft sills, a reinforcement connected with the center sills extending into the last mentioned pocket and beingr secured t6 the innerend of said draft arm, and meahs connecting said center sills and draft arms.

10. In a ear undcrframe having spaced center sills, a draft arm provided with a rear portion shaped to have a series of alternately reversing channeled portions the outside channeled portions tliereof embracing said Center sills, said draft arm having a forward portion in which sadoutside channeled portions progress forwardly and change to dependlng flanged draft sills.

11. In combination in a car underfraine having spaced center sills and an end Sill, a draft arm provided` with a rear portion shaped to have a series of longitudinally arranged alternately reversed channeled por? tions, the outer of which ortions embrace said center sills, said dra t arm having a forward portion in which said miter 'chan-i neled portions regress forwardly and change to de extending un( er the end sill, and means"con'\ necting said draft sills to said end sill.

12. In an underframe having spaced een n ing Z-shaped draft sills*l ter sills, a one-piece draft arrn provided f with a rear portion shaped to form a series of longitudinally arranged alternatelyy roversed channeled portions some of which are'spaced to embrace said center sills, said Adraft arm having a forward yportion in draft a channeled pocket-forming portion intermediate said seats, angular center-sill reinforcing members, portions of which underlie the center sills and which are clamped to said sills', said reinforcing members having end portions projecting into said-draft arm channeled pocketforming portion, and

means rigidly uniting said reinforcing lnem`A 1 bers and draft arm.

14. In combination in an underframe' having spaced center sills, a draft varm having transversely spaced seats for end rtions of the center sills and an "nvertedx shaped portion 4intermediate said seats, center sill-reinforcin members lapping said inverted Usha draft arm portion and extending toward the opposite end of the underframe, said members underl i portions of and beingl clam to saidyslxs and being conformed to sai inverted U-shaped draft arm portion, means uniting said reinforcin members, and means rigidly com bining t e latter and said draft arm.

15. In 'combination in a car underframe having spaced center sills, a draft arm retaining portions of the center sills and providedwith a 4reinfolpeinent-receiving portion, a center 'sill reinforcement comprising spaced Z-bars each havin an upperange directed toward that of t e adjacent Z-bar and a plate connected to and connecting said upper finnges,said draft arm reinforcementreceiving portion and a portion of said cen- .ter sill reinforcement lap iig cada other and being connected togctlier in their la )ing portions, and means clamping nid )ars to said' center sills.

16. .In combination in a oar underframe having an end sill, a bolster and center sills, ardraft arm extendi from the end sill to beyond the bolster an comprising portions embracin op 'tesides of each center sill-rearwa lyo thebolster and one side and a bottom vportion thereof forwardly of the bolster, a Aportion preserving iso 17. In l combination in a -car underframel having center sills and holsters, draft arms passingr from one side ofthe bolster's to the other side thereof and having Z-shaped draft-lugbearing side walls merging with spaced U-shaped center-sill.receiving pocket portions, said draft arms being interlocked with the center sills and abutment means interlocking said draft arms with said bolsters. v

18. In combination in a car underframe having spaced center sills, a reinforcement for said underframe comprising channeled draft arms at opposite ends of the underframe and a channeled intermediate reinforcement secured to the center sills and to said draft arms connectingl the latter, the center sills, draft arms and intermediate draft arm-'connecting reinforcement having longitudinal] y lapping mutually fitting portions, and means suitably connecting the center sills and draft arms.

19. In combination in a car nnderframe draft arm,

having spaced center sills, a reinforcement for said nnderframe comprlsing draft arms -at opposite ends of the underframe provided with Uyshaped pockets receiving the center sills. and a sill reinforcement intermediate said draft arms connecting the same and extending under the center sills secured thereto and fitted to a plurality of sides of the sills and said draft arms. I

20. In combination in a car underframe having spaced center sills, a reinforcement for said underframe comprising draft arms at opposite ends of the underframe pro.

vided with angular seat portions receiving;AA

the center sills and a sill reinforcement intermediate said draft arms lapping each extending under the center sills to aplurality of sides of the and sills, and means connecting and fitted d raft-a rms said sill reinforcement to the sills and draft.

arms.

In witness whereof I have hereunto set my hand 1n the presence of two witnesses.

ROBERT G. ELLIS.

Witnesses :4 Y

OsoAn l-Ioonnno, Bnasnnn S 1 Lummen.

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