US1537573A - Truck side frame - Google Patents

Description

G. A. ANDERSON May 12, 1925 TRUCK SIDE FRAME Filed oct. 17. 1922 Patented May 12, 1925.

UNITED STATES 1,537,513 PATENT OFFICE.

GUSTAF A. ANDERSON, OF BALTINIORE, MARYLAND, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE SYMINGTON COMPANY, A CORPCRATION OF MARYLAND.

TRUCK SIDE FRAME.

Application inea october 17, 1922. serieu 595,097.

T all whom t may concern.'

Be it known that I, GUs'rAr A. ANDERSON, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful improvements in T ruck Side Frames; 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.

M): invention relates to side frames for car trucks and has been primarily designed to provide a construction which is very strong and stiff but comparatively light in \-'eight and in which costs incident to main'- tenance are reduced to a minimum.

The invention, lgenerally stated, resides in Forming` a car truck side frame from a sheet or blank of metal folded to provide an inner wall and an outer wall arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottoni arch bar portions, and a plurality of pedestal tie bar portions.

@ne of the principal features of the inven tion, particularly stated, involves the production ot a car truck side frame from a continuous blank or sheet of wrought metal shaped to form inner and outer spaced side walls, said blank being folded at the top and having its edges oined by integral tie means at points outside of a vertical plane passing l through the side frame, thereby facilitating the uniting of the walls in a firm and rapid manner. j

Another object of the invention is to provide a pressed metal car truck side frame in which the side wall port-ions are provided with conveniently disposed flanges adapted to be easily united by rivets or similar means. some ot said flanges projecting horizontally beyond the outer side wall of the side traine and other of said flanges being disposed centrally and vertically of said side frame.

A further feature of the invention resides in the product-ion of a car truck side frame including inner and outer spaced metallic side walls, each. of said walls being formed th window openings having bordering liening flanges extending inwardly of the sine walls, and means involving an eX- panded tubular member adapted to firmly tie said side walls together, said tubular member being preferably inserted so as to maintain the inwardly extending stiifening flanges in abutted relation.

A still further object of the invention is to provide a car truck side frame of pressed metal involving spaced inner and outer side walls, each of said walls having correspond ing side frame sections including bottom arch bar portions, said bottom arch bar portions being arranged to overlie each other above the journal boxes and having adjacent portions bendable about the heads of the journal box bolts for locking the same in position.

The invention further consists in the method of manufacturing a car truck side frame by forming the same from a continuous sheet metal blank having' corresponding side frame portions which are symmetrically disposed with respect to an aXis of symmetry passing between them, bending portions of said blank to form flanges, uniting said flanges, slitting opposite end portions of the blank, foldingithe blank along a line at the top of the side frame and intermediate the ends thereof, said line being parallel to the said axis of symmetryand disposed between the slitted end portions, bending portions of the blank inwardly adjacent the slitted ends to form cambered top arch bar portions, and inally welding said last named bent portions. v

There are other features of the invention pertaining to particular arrangement of parts and details of construction, all as will hereinafter appear.

In the drawings illustrating the invention, the scope whereof is pointed out in the claims:

Figure l is a view in siderelevation of a car truck side frame embodying the invention, the wheels of the ear truck being shown diagrammatically in dotted lines.

Figure 2 is a vertica transverse sectional view on the line 2 2 of Figure l.

Figure 3 is a top plan view of a one-half portion of the side frame.

Figure 4lis a horizontal sectional view of a one half portion of the side frame on the line Ll--d of Figure l.

Figure 5 is an enlarged detail cross sectional view on the line5 5 of Figure 1.

Figure 6 is an enlarged detail vertical cross sectional view on the line 6--6 of Figure 1.

Referring to the drawings in which sim ilar referencel characters designate corresponding parts in the several views, my. improved side frame includes an outer wall l and an inner wall 2 formed from a continuous sheet or blank of metal, the top inrermediate portion of said blank being folded along` a straight line parallel to the aXis of symmetry of said blank. The walls are arranged in spaced relation, and each comprises truck column portions 3, top arch bar portions 4, bottom arch bar portions 5 and pedestal tie bar portions 6.

EThe bolster opening is indicated by the numeral l@said opening being formed between the truck column, portions of the side frame, as will 'be understood. Inwardly extending flanges 8 are provided on the truck column portions, the adjacent edges of said flanges being welded at a'plurality of spaced intervals, as indicated by the numeral 9 in Figure 2. Spaces 10 are preferably provided between the welded portions of the flanges provided on the truck column portions. "The inwardly Lextending flanges S are preferably continued around the corner bends uniting the truck column port-ions with the bottom arch bar portions, said flanges lextending across and bordering the lower edge of the bolster opening. The weld at the corner bend is also preferably continued around said bend and'serves to unite the continued flanges at the bottom offthe bolster opening, as shown in' Figure.

l.' The inwardly extending flanges bordering thebottom of the bolster opening are preferably spaced apart intermediate the truck columns to provide an opening 11. The upper ends of the flanges 8 provided on the truck column portions are preferably continued so as to provide inwardly extending flanges 12 on the lower edges of the top archbar portions ofthe truck.

- vEach side wall of the side frame is provided with a window, said window being surrounded by an inwardly extending flange 18. Oppositely. inwardly extending flanges 13 of the side walls are preferably abutted centrally of the side frame, as shown in Figure 5. The side walls are adapted to be united by means of expanded tubular inembers 14, said tubular members being inserted within the windowv openings and having their opposite ends expanded to firmly en" gage the annular faces formedat the junctions of the respective side walls with their.

inwardly extending flanges 13. This type Vof tie mea-ns serves to firmly unite the side walls without materially increasing the weight of the side frame. lt will also be obvious that the annular flanges 13 and the inserted tubular members 14 provide continuous stiiilening means at the respective edges of the bolster column portions, the top arch bar portions andthe bottom arch bar portions.

The edges of the folded sheet metal blank are designed to be unitedintermediate the ends of the side frame and at points outside of a vertical plane passing through said side frame. The means uniting the side walls at the bottom of the side frame includes a bottom flange 15 formed integral with the inner wall 2 and an adjacent flange 16 formed integral with the outer wall 1 of the side frame, the outer edges of said adjacent flanges 15 and 16 being firmly united by a` plurality of rivets 17 beyond the face of the outerl side wall l. The flanges 15 and 16 are formed integral with rthe continuous sheet metal blank and the oint uniting the same is preferably at a point outside of the side frame, thereby permitting the rapid and comparatively easy insertion of the connecting rivets.

The flange 15 is upwardly inclined at each end of the side frame and merges into the pedestal tie bar portions 6, which latter por` extend around the corner bends at the junctions ofthe pedestal tie bar portions and bottom arch bar portions. A similarly tapered inwardly extending dange 19 projects from the inner side wall 2 andaround the adjacent portion of said corner bend. These flanged portions of the pedestal tie bar members which, are located between the truck columns and the adjacent journal boxes are preferably of tapering form, their greatest cross sectional area being at the junctions of the pedestal tie bar portions with the respective truck columns. Journal box bol openings 19 are provided in the pedestal tie bar portions 6.

The bottom arch bar; portions 5 which extend at an angle to the top arch bar portions and to the pedestal tie bar portions, merge with and are integrally unitedto said top arch bar portions of the respective inner and outer walls above the journal boxes at the ends of the truck. Each bottom arch bar portion includes an angular flange, the horizontal web of which is indicated by the numeral 2O and the vertical web of which is indicated by the numeral 21. The angular flanges provide a strong and durable construction, the inwardly extending portions 20 being prolonged to extend over the journal bores at each end of the side frame, and the vertically disposed portions`21 beirp.; abutted centrally and longitudinally of the truck and united byr a plurality of rivets 22. the angular flanges forming the bottoniaicli rlhe respectiveportions 2O and 21 of.

llO

bars are designed to extend around the corner bend at the junctions of said bottom arch bars with the pedestal tie bar portions, thereby greatly increasing the strength of the truck so that failure of the side frame at these points is: reduced to a minimum. The vertical disposition of the portions 2l of the angular flanges permits of the ready insertion of the connecting rivets.

The prolonged extensions of the bottom arch bars which project over the journal boxes are indicated by the numeral 23, said extensions being preferably overlapped, as best shown in Figure 6. The edge of one of said extensions is adapted to be bent upwardly, as indicated at 24, adjacent the head of one of the journal box bolts indicated in dot and dash lines in Figure 6. This construction of bendable exten-sion provides a means which prevents the turning of the journal box bolts, as will be understood.

The top portion of the side frame is preferably arranged in the form of a cambered compression member, each end portion of the sheet metal blank being slit, as indicated at 25, to provide inwardly extending flanges 26 arranged to meet adjacent a line passing through the center of the side frame. The blank i-s also transversely slitted, as indicated at 27, to permit the top portion of the side frame at its ends to be properly bent to produce the cambered effect. The inwardly extending flanges 26 are adapted to be welded along their inner opposed edges, said weld extending around the ends of said flanges adjacent the transverse slit 27. The longitudinal and transverse welding of the slitted ends of the top portion of the side frame is indicated by the numeral 28. Journal box bolt openings 29 may be provided in the inwardly extending Vflanges 26 at each end of the side frame, the extreme outer ends of the top portion of the side frame being angled o, as shown, to permit the ready insertion of the adjacent journal box bolts.

The method of manufacturing my improved car truck side frame consists in shaping a continuous sheet metal blank having corresponding side frame portions which are symmetrically disposed with respect to an axis of symmetry of the blank passing between them, slitting opposite end portions of the blank longitudinally and transversely to provide a cambered top arch bar, bending portions of said blank to form flanges, which flanges provide the integral tie means for the side walls of the side frame, folding the blank along a line at the top of the side frame and intermediate the ends thereof, said line being parallel to the said axis of' symmetry and arranged between the slitted end portions of the blank, and finally uniting said slitted portions and said flanges. It will also be perceived that my method of manufacturing car truck side frames involves the overlapping of the prolonged extensions of the bottom arch bar portions to provide a simple and effective locking means for the journal box bolts. j

A car truck side frame constructed in accordance with my present invention is light in weight, strong and durable, the joining of the sideframe portions by integral flanges forming the tie means thereof providing a greatly reinforced and reliable structure in which simplicity of manufacture` and rapidity of assembly are achieved.

I claim: I

l. A car truck side frame involving a continuous metal sheet shaped to form an outer wall and an inner wall arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; flanges formed integral with and projecting beyond said side walls at one side of the side frame, and means uniting said flanges.

2. A car truck side frame involving a continuous metal sheet shaped to form an outer wall and an inner wall arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bot` tom arch bar portions, and a plurality of pedestal tie bar portions; flanges carried by the inner and outer walls, said flanges being adapted to project beyond said outer wall only, and means uniting said flanges.

3. .A pressed metal car truck side frame including outer and inner walls arranged in spaced relation, each of said Walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; and means uniting said side walls, said means being located at apoint outside of a vertical plane passing between said Walls.

4. A pressed metal car truckside frame including outer and inner walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestalv tie bar portions; flanges projecting from one side of the side frame, and meansuniting said flanges at points outside of one of said Walls.

5. A pressed metal car truck side frame including outer and inner Walls arranged in spaced relation, each of said' Walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal Vtie bar portions; and y means uniting said side walls at points outside of at least one of said walls, said means terminating short of'4 the ends ofthe side frame and arranged to extend beneath said truck column portions.

6. A pressed metal car truck side framer including outer and inner walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a

' plurality of' top. arch bar portions, a p luf plurality of pedestal tie bar rality of bottom arch bar portions, and a portions; and rivet meansuniting said side walls, said rivet means being longitudinally of the truck and in a plane beyond the outer face of one of said side walls.

7 A pressed metal car truck side traine including outer and inner walls arranged inspaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar, portions, a plurality of bottomarch bar portions, and a plurality of pedestal tie bar portions; integral tie means including flanges provided on said walls, said flanges being adapted to merge into the pedestal tie bar portions beyond the truck column portions, and means uniting said flanges throughout their length at the bottom of the side frame. l

S. A pressed metal car truck side frame including outer and inner walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom archbar portions, and a plurality of pedestal tie bar portions; integral tie means including horizontally projecting abutted flanges provided on said walls at the bottom of the truck and vertically disposed abutted' flanges provided on said bottom arch bar portions, and means uniting each series of said abutted flanges.

9. A pressed Ametal car truck side frame including outer and inner walls arranged in spaced relation, each of said walls havingv a plurality of truck column portions, a plurality of top arch bar portions, Va pluralityV of bottom arch bar portions, and a plurality of pedestal tie bar portions; and integral means including flanges projecting from the side frame walls, some of said flanges being united at points outside of a vertical plane passing. l etween the side walls, and other of said. flanges being united at points Within said vertical plane.

i l0. A pressed metal car truck side frame. includingouter and inner walls arranged in spaced relation, each of said walls having a plurality of truckl columnl portions, a plurality of top arch bar portions, a plurality of Vbottoni arch bar portions, and a plurality of pedestal tie bar portions; andl inte-gral tie means including flanges .projecting from the side frame inenibers,lcertain of said flanges being abutted andy united adjacent the lower ends or". the truck column portions and pedestal tie barv portions, and other of. said flanges 'being abutted and united adjacent said bottom arch bar portions.

1l, A car truck side frame involving a continuous metal blank folded at its top to form spaced inner and outer side walls, each of said walls having a plurality of truck column portions, a plurality of top' arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; and means includingl outwardly projecting flanges carried by said pedestal tie bar portions .adjacent the outer side wallot' the side frame, said flanges being adapted to extend beneath the truck column portions for uniting said side walls.

l2. A car truck side Iranie involving a continuous metal blank folded at its top .to

portions, said outwardly projecting flanges being arranged to extend beyond the outer face'of one of said side walls.

13.' A pressed metal car truck side frame,

including inner and outer walls arranged in spaced relation, each ofl said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said bottom arch bar portions being provided with angularly disposedzflanges having portions projecting inwardly and downwardly of the side walls, and means uniting said downwardly extending portions of said flanges.

lll. A pressed metal car truck side frame including inner and outer walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said bottom arch bar portions being provided with vertically disposed flanges adapted to be united in a central :and vertical plane passing through the side frame.

l5. A pressed metal carV truck side frame including inner and outer walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said bottom arohbar portions having inwardly extendingy flanges provided with prolonged eXtenlllli sions, said extensions being overlapped above the journal boxes and at least one of said extensions having a portion adapted to be bent adjacent the head of a journal box bolt.

1G. pressed metal car truck side frame including inner and outer walls arranged in spaced relation, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottoni arch bar portions, and a plurality of pedestal tie bar portions; said bottom arch bar portions being prolonged to extend over the journal boxes and having a portion adapted to prevent the rotation of the journal box bolts.

17. Je. pressed metal car truck side frame including spaced inner and outer side walls, each of said walls being provided with an opening surrounded by an inwardly projecting flange, and tie means including a tubular member bridging said side walls and having its opposite ends expanded into said flanged openings for uniting the side walls.

18. A pressed metal car truck side frame including spaced inner and outer side walls, each of said walls being provided with an opening, and tie means including a tubular member having its opposite ends expanded into said opening adjacent the outer faces of said walls for uniting the same.

19. A pressed metal car truck side frame including spaced inner and outer side walls, each of said walls being provided with an opening, and tie means including a tubular member having portions expanded into said opening for uniting thel side walls.

20. A pressed metal car truck side frame including spaced inner and outer side walls, each of said walls being provided with an openingl having an inwardly projecting flange, said flanges being abutted intermediate the side walls, and a tubular tie member having portions extending into said openings for firmly uniting said side walls.

21. A car truck side frame involving a continuous blank of metal folded to form spaced inner and outer side walls, each having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said top arch bar portions being provided at each end with inwardly extending flanges having their inner opposed edges united to produce a cambered eEect and having an integral intermediate portion arranged parallel with an axis of symmetry passing between the side walls.

22. A car truck side frame involving a continuous blank of metal folded to form spaced inner and outer side Walls each having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said top arch bar portions being provided with inwardly extending flanges at the ends of the side frame, said flanges being folded andv welded to produce a cambered compression member. I

A car truck side frame involving a continuous blank of metal folded to form spaced innerV and outer side walls each havingl a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said top arch bar portions having an intermediate integral portion, and `inwardly extending flanges adjacent said integral portion, said flanges being folded and welded to produce a cambered compression member. j

24:. A car truck side frame involving a continuous blank of metal folded to form spaced inner and outer side walls each having a plurality of truck column portions, a plurality of top arch bar portions, a plurality of bottom arch bar portions, and a plurality of pedestal tie bar portions; said top arch bar portions having an intermediate integral portion and inwardly extending flanges adjacent said integral portion, said flanges being folded and united throughout their length to produce a cambered compression member.

25. The method of manufacturing a car truck side frame which consists in forming the same from a continuous sheet metal blank having corresponding side frame portions which are symmetrically disposed with respect to an axis of symmetry passing between them, bending portions of said blank to form flanges, slitting opposite end portions of said blank, folding the blank along a line at the top of the side frame and intermediate the slit ends thereof, bending said slitted portions to form inwardly projecting flanges, uniting saidinwardly projecting flanges, and finally uniting said first named flanges.

In testimony whereof I affix my signature.

GUSTAF A. ANDERSON.

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