US1358501A - Car-underframe - Google Patents

Description

D. S. BAHROWS.

CAR UNDERFRAME.

APPLICATION man MAY 31. 191s.

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AUNITED sm'rss PATENT OFFICE.

DONALD S. BARROXVS, OF ROCHESTER, NEW YORK.

CAB-UNDERFRAME.

To all whom 'it may concern:

Be it known that I, DoNALD S. Bannon/s, a citizen of the United States, esiding at Rochester, in the county of Monroe and State of` 4New York, have invented certain new and useful Improvements in Car- Underframes; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rlheinvention relates to car underfraines, and more particularly to means connected to the wooden center sill for replacing the old wooden draft sills or timbers, the said means being adapted to strengthen the wooden underframe and to afford a strong, efficient and reliable support, container or housing for the draft rigging parts.

The principal obj ect of my invention, generally stated, is to provide a draft arm in which the load transmitted to the lower portion thereof by the draft rigging is carried to the car center sill at a point where the sill is strengthened and reinforced, the load transmitting Vportion of the draft arm being so constructed and arranged as 'to prevent the danger of buckling of this portion of the draft arm. To this end the main feature of my invention broadly considered consists in providing a metallic draft arm connected to the upright face of the center sill and eX- 4tending under the end sill and over and to the rear of the body bolster, a portion of the draft arm between the` end sill and bolster depending below the lower face of the center sill to provide a housing or container in conjunction with a corresponding part Vof the adjacent draft arm, for the draft rigging parts, and means for reinforcing the lower edge of the said draft arms, saidr means eX- tending from over the bolster to a point on the said eepending portion.

There are other features of the invention as will appear from the more detailed det scription of the same when taken in connece tion with the accompanying drawings, in which:

Figure l is a longitudinal central vertical section of a car underframe showing the invention applied thereto, sonic of the draft rigging parts being shown in side elevation for the sake of clearness.

Fig. 2 is a view partially in plan and par- Speciicaton of Letters Patent.

Patented Nov. 9, 1920.

Application led May 31, 1918. Serial No. /Z".;7,4`86.

tially in horizontal. longitudinal section on line 2-2 of F ig. l.

' Fig. 3 is a side elevation of the draft arm. Fig. 4f is a section taken on line 4 4 of Fig. 2.

5 is a section taken on the linel 55 of 2, and

6 is a section taken on the line 6-'-6 of Fig. i. Throughout the specification and drawings lilre parts are designated by like reference characters.

rihe numerals l, l designatel the center sills of a car Yunderfrarne, 2 the end sill, 3 the striking block, and il the striking casting which is connected to theV outer face of the block 3, and 5L atie member connecting the lower faces of the center sills l adjacent the body bolster 5. To the inner or adjacent faces Vof the center sills l are connected,`

preferably by means of the bolts 6, the draft arms 7. Each draft arm 7 comprises a plate-like member which is adapted to overiie the adjacent face of the center sill l and which entends Aalong the upright face of the said sill from end sill to and in rear of the body bolster. Intermediate the end sill and bolster the draft arm is providedwith a depending portion 7a, which portion is 'preferably offset from the vertical plane of the upper portion of the'draft arm, as shown at 9 and 10. In old wooden car construction the spacing of the center sills was materially less than Vthe requirement of the Master Car Builders7V Association for steel underframes, which requirement is twelve and seveneighths inches from inside face to inside face of the draft arm or center sills of a steel underframe car, and by offsetting the draft arms as described above, the vertical faces of the depending` portions of the draft arms are spaced to agree with the requirements of the Master Car Builders Association. These depending portions of the draft arms afford a draft rigging housing or container suitable for the reception of the modern type of draft rigging. Y

VFor convenience, the invention has been illustrated in connection with a well known type of draft rigging which comprises a drawbar ll, a front follower 12,-a rear fol'- iower 13, spr/ings lilinterposed between the front and rear followers, the drawbar andmeans ofthe horizontally disposed connect-v ing means or links 15. Passing through the drawbar, the' front follower and 'the rear follower, respectively, are the `transversely disposed keys 16, 17 and'18. rlhese keys, as is well understood and as will be clearly seen from the disclosure of Fig. 2, passl through slots inthe links andthrough elongated slots 19, and 21 in the depending portions of the draft varms' 7, thefro'nt key 16 being. located midwayof its receivingslot. The key 17 normally occupies a position in the forward end ofthe draft arm i slot, and theV key 18 normally occupying a action of the keys.

position at the rear of the draft arm'slot, so that on forward movement of the "draw bar the front key 16 will be moved outwardly and carry with it the links 15, the rear key 1S and the rear follower 13, the

front follower 12 being held stationary by the key 17. n l

To the outer faces of the depending portions ofthe draft arms are connected the cheek-plates V22, Each of these plates is provided with a plurality of slots to correspond withthe before-mentioned slots in the draft arms,and each may be provided with inwardly extending bosses adapted to line 1 venience.V

To strengthen the depending portion 72L of the draft arms 7 there ispreferably provided'on the outer face of each draft arm Y adjacent the lower face Vof the center sill an angle bar reinforcing means 23, one flange, 24, of which is adapted to contactrand be secured to the outer face of the dra-ft'arm and the other` flange, 25, being adapted to abut and besecured to the center sill. the form of draft rigging illustrated, ,the

flange 24; is interposed between the cheek-V v plate and the adjacent draft arm, and the se- Vcuring means are adapted to pass through the cheek-plates 22,' theilanges 24 and the' i V.draft arms 7,

To counteract the bending tendency of the upper portion of the draft arms, each draft Varm is provided adgacent its vupper edge with reinforcing means 26 which may be and preferably is in the form of an angle bar 27. This angle bar preferably overlies and extends on opposite sides `of the body bolster 5, and as the angle bar is firmly riveted to the adjacent face vof the associated draft arm it may bev considered for all purposes as a partthereof, and it therefore changes the draft `arm at v this point from a fiat plate to an angle bar havn ing a long vertical or upright flange and a short horizontal flange.

,7" of thedraft arm to a point in alinement T ill lWith draft armsof the old type great diiliculty has been experienced owing to the liability of the draft arm bucklingbetween the rearfollower and the bolster, due' tov heavy bulfing stresses. ln my device l obviate this danger by providing a reinforcing means 28 which extends along the lower edge of each draft arm from 'a point in front ofthe rear follower 13 to a ypoint in rear fof the bolster 5. This reinforcing means may be and preferably is in the form of'an angle bar. To prevent vthe interference of the reinforcing means 28 with the moving parts of the draft rigging, l prefer- .al-olvV construct the reinforcing mean'sin a 80 plurality of parts 29 :and 30, theV portion 29 comprising an langle bar which is connected to the outer faceV of the depending portion?? of eachV draft arm adjacent the lower Vedge thereof, the said angle bar 29 85 extending Vrearwardly along the lower edge of the depending portion to a point in rear of the rear follower 13 and may and preferably does entendV along the inclined portion with the'lower portion of thecenter sills.V rlhe portion 30 ofthe reinforcing means 28 is Yalso preferably formed as Van angle bar and is connected to the inner face-of each draft arm soas to avoid interference with the center sills. This angle'bar 30 isconnected to the lower edge of the rearwardly extending portion of the'draft 'arms 7, and

V'preferably extends Vforwardly of the bolster 5 to Vand along the inclined portion 7b of 10.0

ach draft arm so as to overlap the upwardly extendingV portion of the 'adjacent Vangle bar 29. rlhe adjacent ends, of each pair of anglebarsQQand V30 are connected tothe intervening portion of the'draft arm 105 Y by means ofthe rivets V31. `By this construction the inclined portions 7b of the draft arms are greatly strengthened and reinforced' against all possible danger of buckling, theV angle bars riveted to the op- 110V posite sides'of the draft plate forming with each draft plate a built-up beam of substan-y tially T-'sectiou This construction Y also transmits the bufhng loads to the car center sills at points where the latter'are best able 115 to withstand these excessive strains. Having now fullyv described my invention, although it, is to'be understood that the termsV employed are to be taken in their f descriptive and notin `their limiting sense,

what I Vclaim is z, Y

1. In a car underframe, the combination with wooden center sills, of metallic draft plates connected thereto, each of which is provided with 'a depending lportionlsaid125 portions extending below the `lower Vfaces of the said sills and below the lower edges of the rearwardly extending portions of the draft plates, said depending portions being outwardly flared to'provide a draft rigging 130 the upright faces of the said sills, saidV plates being substantially equal in width to the said center sills between the said bolsters and each being provided with a depending portion intermediate lthe bolster and end sill the inner ends of the said depending portions sloping upwardly adjacent the said bolsters, and means for reinforcing the lower edges of the said plates adjacent the said holsters, said means co1n prising angle bars each connected to the inner face ot' one of the said plates adjacentthe bolster and extending forwardly thereof, and an angle bar connected to the outer tace of each plate adjacent the depending portion thereof, the adjacent ends of each pair o1 angle bars being adapted to extend in the same direction and to overlap.

3. In a car underframe the combination with the center sills, end sill and bolster, of a pair of metallic draft plates connected to the upright faces of the said sills and eX- tending under the end sill and over and to the rear of the said bolster, means for reinforcing said plates between the end sill and bolster and means for reinforcing said plates adjacent the said bolster, said rst named means including a pair of angle bars connected to the outer face of each of the 'A said plates and extending rearwardly from the end sill toward the said bolster one angle bar'of each pair being connected to the adjacent center sill, said last named means including a member connected to the inner face of each plate adjacent the said bolster, said members being adapted to coincide with the lower edge oi' the adjacent plate, the said members extending forwardly of the bolster and e'ach being adapted to overlap and be connected to the adj acent end of one of the first named angle bars, said overlapping ends extending in the same direction.

ln testimony whereof I aiix my signature.

DONALD S. BARROWS.

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