US1801332A - Car underframe - Google Patents

Description

c. J. w. cLAsEN ET AL 1,801,332

C AR UNDERFRAME Filed Jan. 16, 1930 2 Sheets-Sheet l April 21,1931.

BY Pwowhw M 64I-M o We 51a ATTORNEYS April 21, 1931. c. .1. w. cLAsEN ET Al.

CAR UNDERFRAME Filed Jan. 16, 1930 2 Sheets-Sheet 2 INVENTORS Caen ,www BY y W VWM 9 Mc,

ATTORNEYS Patented .Apta 21, 1931 UNITED STATES.

PATENT OFFICE CLAUS J. WER-NER GLASEN AND FRANK W- LEWIS, F DAVENBORT. IOWA, ASSIGNOBS ro THE :enrrnnnonr cotisant?, or nnrrnnnonr, Iowa, .e ooaronnrion or iowaV CAR. UNDEBFRAME Application ledJanuary 16, 1930.

This Vinventionrelates to the construction of railway car underframes between the center sills and bodyvbolsters adjacent the ends of the car, andrmore particularly tocar underframes designed for draft gear of the two key horizontal yoke type in which the inner end of the shaft gear is quite close to the body bolster.

The present invention has for an object to provide a joint between the bodyT bolster and center sill which has a reinforcing plate which extends outwardly beneath the lspaced draft arms and which Ais provided with a portion extending across the space between the arms which forms a draft gear support. A further object is to provide a bearing plate attached to the center sill and inten `posed between the truck and body bolsters which is so formed as to provide a draft gear support.

In the construction of car underframes, lonly a limited space for the underframe is available between the truck bolster and the car floor. When a one piece body bolster is ,35 employed, it commonly extends through a recess on the under side of the center sill with the bottom of the body bolster substantially flush with the bottom of the center sill and asuitable bearing is interposed between the body and truck holsters.

Y y 0n account of the recess in the under side of the sill to receive the body bolster, buiiing forces or end shocks due to the operation of the cars are exerted on a line well below the l' :l5 neutral aXisof that portion of the sill over the bolster recess and in many instances are on aline passing directly through this recess. These buiiing forces set up bending stresses in the portion of the sill over the recess 5.0 which, after repeated buifng shocks, will dis- Serial N0. 421,157.

side of the body bolster, the strut plate being of sufficient strength to materially lower the neutralaxis of the sill so as to resist bending strains due to the bufhng forces and the vertically imposed load on the sill.

The object of the present invention is to adapt the invention disclosed in the aforesaid copending application to car underframes designed for draft gear of the two key horizontal yoke type in which the inner end" of the draft bolster.

Stated more specifically, the present invention has for one of its objects to provide a gear is quite close to the body strut plate which effectively reinforces theV gether with such variations and modifications thereof vas will be apparent to one skilled in the art to which the invention appertains.

Reference should be had to the accompanying drawings forming a part of this specification in which:

Figure 1 is a fragmentary plan view showing -a portion of the steel underframe of a railway car.

Fig. 2 is a section taken on the line indicated at 2-2 in Fig. 1.

Fig. 3 is a section taken on the line indicated at 3,-.3 in Fig. 1.

Fig. 4 is a section taken on the line indi cated at 4.-.-4 in Fig. 1.

Fig. 5 is a section taken on the line indicated at 5 5 in Fig. 3.

Fig. 6 is a plan view of the strut plate.

Referring to the accompanying drawing, the car underframe comprises a center sill 1 which may be of the single or double type being herein shown for purposes of illustration as an Ifbeam and side sills 2 which are connected near the ends of the vframe by body holsters 3 and along the length of the frame by tie beams 4, only one body bolster and tie 'beam being shown in Fig. 1, which shows Vmember indicated at 7.

'The Vextensions when formed separately from the body portion of the sill are provided with attaching portions 8 which lit upon the opposite sides of the body portion of VtheV center sill and are attached to the ends of the body Vportion of the sill immediately tothe inner side of the body bolster, each ex- 25,

tension being provided with a recessy 9 on. the underside thereof which is of a width and depth to receive thevbody bolster 3 with the bottom of the body bolster substantially flush lof the bottoms of the extensions.

The extensions 5 are preferably in the form of castings with integral webs 10 and 11 across the sides and top ofthe bolster recess for engagement with the sides and top of thevbolster. A reinforcing or bearing plate 12 is rigidly secured to the bottoms of theextensions and to the body portion of the sill and extends across the open lower end of the bolster recess 9. The plate 12 may be interposed between the car unvderframes and ya truck bolster13' to serve as an intermediate bearing member, in' which vcase it is provided ywith a central annular bearing portionv 14 which rests in an annular'groove in the top face of the truckbolster formed by an'oute'r annular Vrib 15 and a central boss 16 concentric with the rib 15. The truck bolster is Vprovided with a centery pin aperture 17 vided' with a central portion 18 forming a recess to receive the rib '16 ofthe truck bolster,

the recessed portion 18 being provided with an aperture 2O which registers with the aper- `The annular an annular .channel inthe top-face of the 22 and 23, the ribs 22 extending radially `across the channel and the ribs 23 reinforcing the outer portion of the channel.

Theheight of the reinforcing ribs 22 and 23 is less than the depth of the channel and thecentral portion 18 Afits'in a recess in the 'bottoml of the body bolster, the bodyk bolster and' the sill extension above the body bolster being providedl with center pin apertures 24 and 25 which are axially alined with each other and with the apertures 17 and 20 of the truck bolster and strut plate.

'llhe plate 12 is preferably so formed as to strengthen the underframe at the joint between the center and body bolster and is referably formed from the center thereo to the outer end of a width in excess of that of the body portion of the sill and substantially equal to the width of the end portion formed by the spaced draft arms between which the draft gear is mounted. The inner end of the strut plate tapers from the centralportion and extends a substantial distance along the under side of the body portionrof the center sill to which it is riveted or otherwise secured inwardly of the body bolster. The plate 12 may be riveted or otherwise secured to the body bolster on opposite sides of the center sill and extends outwardlybeneath the draft arms being riveted or otherwise secured to the bottom of the extensions and draft arms outwardly of the body bolster. The plate may be stiffened by short depending flanges 28 extending substantially the full length thereof along opposite sideedges. rIhe plate 12 extends considerably past the'inner ends of the draft arms 6 and has a recess `29 centrally of its outer end to accommodate. the draft gear adjacent the inner ends of the arms 6.

The outwardly extending side portions of the plate on opposite sides of the recess 29 which are attached to the under sides of the draft. arms are connected by-` an integral transverse web 30 which extends across the space between the inner ends of the arm to provide a draft gear support, the transverse draft gear supporting web being at the proper height for supporting the draftgear and being reinforced by depending edge flanges 31 so that it provides a rigid support for the draft gear.

Itis to be understood that in some embodi ments of the' invention, the primary function of the combined joint and draft gear supporting plate may 'be' asa bearing or center 'plate between the body and truck bolster,

through the lOOSS 1.6 and the Plate 12' is PrO-.while in other embodiments, the primary function ofthe plate may be as a strengthening or strut plate sti-'e'ning the sill at the joint between the sill and body bolsterlor vthe plate maybe a combined strut and vcenterplate, the plate in all cases beinglprovided with an integral draft gear supporting por- Y i Htion. lplate andv this channel is reinforced by ribs lt will be apparentfthat the present invention provides a very simple and economical construction at thejoint between the center sill truck bolsterv and body bolster by means of a strut plate whichfserve's noty only tovpro-f Avide the necessary strength inthe center sill to prevent distortion under buHing stresses, but also 'provides a draft gear support?` t Furthermore, it is to be'understood thatv the particular form of apparatus shown and de- 1930 fee 'spaced draft arms at an end thereof, a body bolster extending across the sill adjacent the innerends of the draft arms, a truck bolster `beneath the body bolster, and a plate rigidly att-ached to the sill and interposed between `said holsters, said plate extending outwardly beneath said arms and having a draft gea-r supporting portion extending across the space between said arms.

2. In a car underframe, a center sill having spaced draft arms at an end thereof, a body bolster extending across the sill adjacent the inner ends of the draft arms, a truck bolster beneath the body bolster, and a plate interposed between said holsters` and extending outwardly beneath the draft arms, said plate being rigidly secured to the under side of said arms and having aI draft gear supporting portion extending across the space between said arms.

In a car underframe, a center sill having spaced draft arms at an end thereof, a body bolster extending across the sill adjacent the inner ends of the draft arms, a truclr bolster beneath the body bolster, and a pla-te interposed between the holsters and attached to the sill and body bolster, said plate extend- Y ing outwardly beneath the draft arms and having a draft gear supporting portion extending across the space between said arms.

4f.. In a car underframe, a center sill having spaced draft arms at an end thereof, a body bolster extending across the sill adj acent the inner ends of the draft arms, a truck bolster beneath the body bolster, and a plate rigidly attached to the sill and interposed between said holsters, said plate extending outwardly beneath said arms and having spaced portions rigidly attached to the under sides of the arms, said plate having a transverse web connecting said spaced rigidly attached portions and forming a draft gear support.

5. In a car underframe, a center sill having spaced draft arms at an end thereof, a body bolster extending across the sill adjacent the inner ends of the draft arms, a truck bolster beneath the body bolster, and a plate rigidly attached to the sill and interposed between said holsters, said plate extending outwardly beneath said arms and having spaced portions rigidly attached to the under sides of the arms, said plate having a transverse web connecting said space-d rigidly attached portions and forming a draft gear support, said web having reinforcing flanges along the edges thereof.

V6. In a car underframe, a body bolster, a center sill having spaced draft arms at an end thereof, said sill having a recess upon the underside thereof of a width and depth to receive the body bolster', and a plate rigf idly secured to the under side of the sill and extending across said recess, said plate cxtending outwardly beneath said draft arms and rigidly attached to the draft arms, said plate having a draft gear supporting portion extending across the space between said draft arms.

7. In a car underframe, a body bolster, a center sill having spaced draft arms at an end thereof, said sill having a recess upon the under side thereof of a width and depth to receive the body bolster', and a plate extending across the recess beneath the bolster and secured to the sill inwardly of the recess and to the body bolster at opposite sides of the sill, said plate extending outwardly beneath said draft arms and having draft gear supporting portion extending across the space between the arms.

8. In a car underframe, a body bolster, a

center sill having spaced draft arms at an end thereof, said sill having a recess upon the under side thereof of a width and depth to receive the body bolster, and a plate extending across the recess beneath the bolster and secured to the sill inwardly of the recess, and to the body bolster at opposite sides of the sill, said plate having laterally spaced portions extending outwardly beneath the draft arms and rigidly attached thereto, said plate having a connecting web joining said attached portions and forming a draft gear support.

9. In a car underframe, a body bolster, a center sill whichhas spaced draft arms at an end thereof, said sill having a recess on the under side thereof of a width and depth to receive the body bolster, and an elongated `plate rigidly attached to the bottom of the sill forwardly and rearwardly of the recess, said plate extending beneath the inner ends `of the draft arms and having a draft gear support formed integrally therewith and extending across the spa-ce4 between said arms.

l0. In a car nnderframe, a body bolster, a center sill which has spaced draft arms at an end thereof, said end portion having a recess on the under side thereof of a width and 'attached end portions and forming a draft gear support.

11. In a car underframe, a body bolster, a center sill having spaced draft arms at an hill loo

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end thereof, and a recess'across the underside thereof adjacent the inner e-nds of said arms of a width and Vdepth to receive the body bolster, and a strut plate of a width materially greater than that of the sill, extending across the bottom of said recess and secured to the body bolster' on opposite sides of the sill, said plate having an elongated tapering inner end portion rigidly attached tothe bottom of the sill inwardly of the body vbolster and having its opposite end rigidly attached to the bottoms of the draft arms, said plate having a portion extending across the space between the arms and forming a draft gear support.

12. In a car underframe, a body bolster, a center sill having spacedrdraft arms at an end thereof'and a recess on the under side thereof of a width and depth toreceive the body bolster, and an elongated strut plate rigidly attached to the bottom of the sill inwardly and outwardly of the recess, said plate extending beneath the inner ends of the draft arms and having` a draft gear support formed integrally therewith and extending across the space between said arms, said plate having reinforcing flanges extending along the opposite side edges thereof.

13. In a Car underframe, a body bolster, a Vcenter sill having spaced draft arms at an end thereof and a recess across the underside thereof adjacent the inner ends of said arms of a widthv and depth to receive the body bolster, and a plate of a width materially greater than that of the sill,eXtending across the bottom of said recess and secured to the body bolster on opposite sides of the sill, said plate having an elongatedl a center sill having spaced draft arms at an end thereof and a recess across the undersi-de thereof adjacent the inner ends ofthe arms of a width and depth to receive the body bolster, a truck bolster beneath the body bolster, and a plate of a width materially greater than the width ofthe sill extending across the recess and attached to the body bolster at oppositesides of the sill, said plate having a bearing portion engaging the truck n' bolster and an elongated tapering vend portion secured to the sill along the under si'de thereof inwardly of the recess, said plate having its opposite end portion extending outwardly beneath the draft arms and providedv with a draftv gear supporting portion eX- tending across the space betweensaid arms.

16. In a car underframe having a draft gear, a center plate provided with a forward extension to support the rear end of j tures.

CLAUS Jr WERNER GLASEN. FRANK W. LEWIS.,

tapering end portion rigidly attached to the bottom of the sill inwardly ofthe body bolster and having its opposite end extendingoutwardly. of the recess and rigidly attached to the bottoms of the draft arms, said plate having a webI extending'transversely across the space between the arms and forming a kdraft gear support, said web having reinforcing flanges along the edges thereof. le, In a car underframe, a body bolster, a center sill having spaced draft arms at an end thereof and ay recess across the underside V thereof adjacent the inner ends of the arms of a width and depth toy receive the` body bolv j plate having an elongated-end portion rig- Vso idly secured to the sill `along the under side thereof inwardlyof'the recess and its opposite end portion extending outwardly beneath the draft `arms and rigidly secured thereto, said plate having a draft gear sup! porting portion extending across the space between saidy draftarms. v Y y 15. In a car underframe, a body bolster,

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