US1347964A - Railway-car underframe - Google Patents

Description

w. P. MURPHY.

RAILWAY CAR UNDERFRAME.

APPLICATION FILED NOV. 7. |917. I 1,347,964, Patented July 27,1920.

2 SHEETS-SHEET I.

@OZ I JJI'IL: I 'I 5 0 @um w. P. MURPHY.. RAILWAY CAR UNDERFRAME.

APPLICATION FILED'NOV. 7, 1917- 1,347,964. Patented July 27, 1920.

2 SHEETS-SHEET 2.

UNITED STATESl PATENT OFFICE.

'WALTER P. MURPHY, oFvNEw YortK, N. Y.

A RAILWAY-CAR UNDERFRAME.

origin@ application med Augiist a, 191s', seriaino. 112,889. Divided and this application mea Nbveinb'er and State, of New York, have invented certain new and useful Improvements in Railway-Car Underframes, of whichfthe following is a specification. .Y

My invention relates to certainimprovements in the construction of` under frames for railwayv cars, more 'particularly freight cars. Y Y

The draft arms of railway cars are subject to lateral stresses tending to break them or tear them from their attachments. For example, the pressures and stresses against the follower plates ofthe draft rigging `are likely to cause these parts to become bent to a greater or less extent. If bent to any appreciable extent the follower plates have a wedging action against the cheek castings tending to spread the'samefthereby exerting a lateral stress .uponthe draft arms.

Y It is one of the objects of myV invention to provide a draft arm of novel andv improved i construction, which Vcan be used either lon new cars'or in the repair of old cars, more particularly cars havingv wooden under frames, and which will be light in weight, relatively inexpensiveV to manufacture and at the same time extremely strong andrigid so as to be capable of withstanding the lateral stresses abovementioned, also the vertical stresses resulting from the up and down movements of the couplers and'such longitudinal thrustsv as the draft sill must take under. the butfing movements of the coupler.

. A furtherobject of thel invention'is to provide an L improved metal reinforcement for the center sills of a freight car having an under frame of wood construction, which will eifectually prevent the sills from being broken,y injured or loosened fromtheir at-v tachmentf to thecarby the inertia shocks and other destructive forces to whichv these members Yare subjected when the car is in service, and -will furnishr a rigid structure to which the draft-armsmay be attached.

The invention consists in the novelconstructions, arrangementsjand Adevices to ybe hereinafter described'and claimed, for carrying out-the above stated objects, together withv other improvements relating to the constructionof railway car under frames which ing drawings, wherein ofY Fig. 2.

7, 1917. Serial'No. 200,703.

VJvill be referred to in the following descripion.

kThis application is a division of :my'copending application Serial No. 112,889,.filed August 3, 1916. 1

The invention `is illustrated in certain preferred embodiments in thev accompany- F igurel is a plan view ofa portion of the under frame and draft lrigging .of a railway car of wood constructionillustrating one form of the invention butwith Cer- Y Specification of Letters Patent. Patgnted July 192.0.'

tain parts omitted for the purpose of mak- Y ing' more clear the illustration vof other fea tures. Y

Fig. 2 is a broken longitudinal sectional view of this embodiment of the invention,

showing the parts omittedfrom Fig. .1, but

omitting the coupler draw bar, follower plates and cheek castings. f

Fig. 3 is a cross-sectional view 0n line 3-3 Fig. fat is a view, in perspective, of one of thecheek castings. .'Fig. 5 is a longitudinal sectional'perspective of the parts shownin Fig. 3.

Figf is a view, in perspective,`of"one of the Vattaching angles used in the construction shown in the preceding figures.

Fig. 7 isa similar view of the car bolster. t f v Like characters oflreference designate like parts in the several figures ofthe drawings. Referring -to the drawings' whichzshow fragmentarily the end of thennder frame of a railway car constructed largely.- of wood, with a structure embodying one form a brace .for

- of my invention applied thereto, "25 ldesig 34 the yoke or spring-casing, and 35, 35 follower' plates. draft rigging forms vno part ofv my invention.`

.For the purposeof completelyillustrating my invention, lI have shown a `form of draft lrigging of rfamiliar' type lin place between thedraft arms. This device will not It will be understood that the Y Vrequire description in detail and it will be understood that the construction and arrangement constituting my invention are adaptable, with possible slight modifications well within the scope of ordinary mechanical Yskill,vto any of the draft riggings nowmin use .on railroad cars.VV It will also be understood thatl details" of construction of Vthe parts of the under frame above referred'tol might'be modified without departure from` theinitention which is adaptableto various types of Vunder frame. A

Instead of thefwood orcast metal draft arms heretoforeemployed, I provide a pair of pressed steel draft arms 36, V36 formed with longitudinally extending corrugations 37 and preferably with outturnedstiffeiiing flanges 38 at their lower edges to which are secured the usual carry iron 39 and tie plate 40. ,Secured to .the draft arms are cheek castings 41 (Fig. 4) consisting, in each case,

of a longitudinally disposed plate 42 and a transversely disposed plate 43 against which the follower plate 35 of the draft rigging' bears.I The plate 43 is formed with curved projections 44 which enter into the corrugations `Srof the draft arm. 45, 45 are stiffening webs onthe inner sides of plate 42 and 46 are similar Vwebs onV the outer sides of the casting, the latter webs lying within corrugations 37.

Y Preferably the draft arms are formed with horizontally extending portions 47 which lie latwise against the under sides of the center sills V-26 Vandare secured thereto by bolts 48. They draft farms are Valso provided, preferably',withxextensions 49 offset from the lower-portionsof thev draft arms, formed preferably with jlongitudinally extending corrugations 50 and secured to the inner sides of center sills 26 by bolts 5l.. This arrangement gives the' draft arms very firm `and reliable anchorage andalso serves to Vreinforce the `center sills against their tendencyY to` buckle out under the inertia shocks whichthe under frame of a car yreceives in service. To further reinforce and'strengthen the center sills'a channel-shaped member 52,

formed with longitudinal corrugations 753, is disposed in inverted arrangement between the center sills 26 and secured to the sillsby theV bolts 5l. Preferablya corrugated plate l54 isrivetedfto the channel member 52 aboveV tliebody bolster 32; rIt will be seen that the upper portions of theV draft arms, .taken in con'unjction with the member 52 rovide a l a P hollow trussiorrreinforcement for the center sills kwhicli will keep them in line and Vprevent them frombei'ng brokenor `torn from theirfattachments. v Y

.The inner ends of the draft arms 36- aresecured to the 'body bolster by angle plates 55. The outer endsv of the draft arms Vare f Y secured by angle plates 56 (Fig. V6) tothe under sides of the end sill 25 and dead wood 27 57 are angles which limit theo'pening vthrough, whichthe coupler draw bar passes.

Iny order to brace the body bolster and furtherrein-fo-rce the center sills I provide bracing members 58 (Fig. 7) secured to the centersills and formed with projections 59 bearing against the web of the bolster and attached thereto by angles 6o-f The' flower 'edges of the brace members are formed with out-turned `stiffening flanges 61. 62 is a Vpressed steel cross ybrace arranged against the end sill 25 and extending from one draft armto theother. 63 is an angular cross brace above Vmember 62.I

f l/Vhile IY havedescribed my invention in of the ceiiter'sills, said offsets being formed v withV .longitudinal cOrrugatiOnS.

2. The combinationwithtlie wood center i sillsiof a rai'lway'canrof a reinforcing structure comprising a steel plate formed with longitudinally extending corrugations and aianged betweenlandsecuned to Vsaid vcenter s1 s.Y i Y 1 Y Y 3. The kcombination `with the wood center sills of arailwaycar,of areinforcing structurecomprisin-g a metal 'sheet Vformed with pressed longitudinallyextending rigidifying corrugations and arranged between and secured to ysaid center sills', and a pressed steel, longitudinally corrugated draftv 'arin secured to said sillsand reinforcing structure. i

4. The combinationwith the wood center Ysills ofl a railway car, of a reinforcing structure'comprisiiiga steel plate formed vwith pressed, longitudinallyeirtending corruga-` tions' and arranged between and secured to said ycenterV sills, V.andrmetal draft armssecuredV to said sills and reinforcing strucl ture. i' Y Y Y Y 5; The combination with. the 'end-sill, bolster and center sills of arailway car, of 'a reinforcing. structure comprising a metal sheet `formed withxlp'ressed, longitudinally extendingY rigidifying corrugations and` lying betweenand secured to the# center sills, and longitudinally corrugated pressed steel draft arms secured at'opposite ends to the end sill vand bolster, respectively, and

provided with upward extensions secured to said center sills and reinforcing structure.

6. The combination with the center sills of a car underfraine of wood construction, of a sheet metal reinforcing structure which extends lengthwise of the car between and secured t0 said center sills, and which is provided with a plurality of longitudinal corrugations.

7. The combination with the Center sills, end sill and bolster of 4a railway car underframe, of sheet metal longitudinally corrugated draftV arms arranged under and secured lto the center sills with inwardly projecting offsets overlapping and secured to the inner sides of said center sills, and a sheet metal reinforcing member extending lengthwise between and attached to vsaid sills provided with a yplurality of reinforcing corrugations.

8. The combination with the center sills, end sill and bolster of a railway car underframe, of sheet metal longitudinally corrugated draft arms arranged under and secured to the center sills with inwardly projecting offsets overlapping and secured to the inner sides of said center sills, and a substantially channel shaped reinforcing member extending lengthwise between said center sills and provided with a plurality of longitudinal corrugations.

9. The combination with the wood center y steel longitudinally sills of a railway car, of a reinforcing structure arranged between and secured to said sills comprising superposed pressed steel sheets provided with a plurality of Vsaid sills comprising superposed pressed steel sheets provided with'a plurality of longitudinal corrugations, and a pressed corrugated draft arm secured to said sil s and reinforcing structure.

1l. The combination with the wood center sills of a railway car, of a sheet metal reinforcing element formed. with rigidifying corrugations and extending longtitudi? nally of and secured to said centerk sills, and metal draft arms secured to said reinforcing element and center sills.

l2.v In combination with the center sills,

end sill and bolster of a railway car under-l frame, sheet metal corrugated draft arms arranged under and secured to the center sills with inwardly projecting offsets overlapping and secured to the'inner sides of said center sills, and a pressed metal inverted channel-shaped reinforcing member extending lengthwise between said center sills and provided with a plurality of longitudinal corrugations.

WALTER P. MURPHY.

Images