US2181709A

US2181709A - Welded truck side frame

Info

Publication number: US2181709A
Application number: US107110A
Authority: US
Inventors: Schenck Charles; Louis G Miller
Original assignee: Bethlehem Steel Corp
Current assignee: Bethlehem Steel Corp
Priority date: 1936-10-23
Filing date: 1936-10-23
Publication date: 1939-11-28
Anticipated expiration: 1956-11-28

Description

Nov, 28, 1939. 'c. SHENCK ETAL 2.181.709

' mam) YTRUCK sum FRAME Filed Oct. 23, 1956 a Sheets-Sheet 1 Nov. 28, 1939. c. S CHENCK ET AL 2.181,7O9

. WELDED TRUCK SIDE FRAME Filed Oct 23, 1936 3 Sheets-Sheet 2 J tw . m tkarlas'Smaa/i:

Nov. 28, 1939. c. SCHENCK El AL WELDED TRUCK SIDE .ERAME Filed Oct. 23, 1936 I 3 Sheets-Sheet 3 Patented Nov. 28, 1939 WELDED TRUCK SIDE FRAME Charles Schenck, Ooopersbnrg, and Louis G. Miuer, Bethlehem, Pas assignors to Bethlehem Steel Company, a corporation oi. Pennsylvania Application October 23, 1936, .serial No. 107,110

20 Claims. (Cl. 105-205) Our invention relates to side frames for railway car trucks and more especially to truck side frames of the built up type in which the top and bottom arch bars and column members are formed 5 of pressed sheet metal and the journal boxes each formed of cast metal, and the separate parts all secured together by welding thereby eliminating the use of rivets and forming a substantially unitarystructure.

One of the objects of our invention consists in forming the parts insuch a manner that they can be easily assembled and welded together and produce a very strong car truck side frame of comparatively light Weight.

15 Another object of our invention relates to reiniorcing the top and bottom arch bars.

Another object of the invention relates to the manner of forming and connecting the journal boxes to the end portions of the bottom arch bar.

20 Another object of our invention relates to thetruck column members and manner of attaching them to the top and bottom arch bars. 1 Another object of the invention relates to the manner of constructing and attaching the spring 25 plank seat.

A further object of the invention relates to the formation of the brake hanger brackets and the manner of attaching them to the side frame.

It has been found in actual tests that the flanges of a top arch bar of trough section disposed as illustrated in this application which is under compression has a tendency to open up or bend laterally outwardly under a heavy load. To obviate this defect we have formed the top arch bar of thicker material than thebottom arch bar and connected the flanges together at spaced intervals by means of tie plates,-and this forms another .i'eature of our invention. I I

Other objects and advantages'of the invention relate to the particular arrangement and combination of the various parts will become apparent as the descriptionproceeds. 4 Having thus given a general description .of the 45 objects of our invention, we will now in order to make the same more clear, refer to the annexed three sheets of drawings forming a part of this specification and in which like characters of reference indicate like parts:

Figure 1 is a side elevation of a railway car truck side frame embodying our invention.

Fig. 2 is a top plan view.

Fig. 3 is a vertical longitudinal section taken on the line- 3-3 of Fig. 2.

5 Fig. 4 is a bottom plan view.

' Fig. 5 is a vertical transverse section taken on" the line 55 Fig. 1.

Fig. 6 is a transverse section through one of Y the truck column members taken on the line 6-6 of Fig. 1.

Fig. 7 is a transverse section of the truck side frame taken longitudinally of one of the journal boxes on the line 'i? of Fig. 2.

Fig. 8 is a detail section through a portion of the spring plank seat taken on the line 8-8 of Fig. 1, and Fig. 9 is a detail section taken on the line 99 of Fig. 1.

Referring now to the characters of reference on the drawings: i indicates the top or upper arch bar formed of pressed sheet metal of trough or channel section disposed with the flanges 2 which are of substantially uniform depth extending downwardly, theend portion of said upper arch bar being bent down slightly. The bottom arch bar 3 is also formed of pressed sheet metal of trough or channel section disposed with its flanges 4 of varying depth extending upwardly, and preferably made of thinner stock than the top arch bar. The central portion of the bottom arch bar is slightly wider as at and the flanges are of greater depth than the central portion oi. the top arch bar. The bottomarch bar 3 is formed with upwardly inclined intermediate portions 8 and horizontal end portions I. The'end portions of the top and bottom arch bars are tapered slightly and are of substantially the same width, the downwardly extending flanges 2 of the top arch bar. have their edges butt welded as at 8 to the upwardly extending edges of the flange 4.

of the end portions of the bottom arch bar 3. In order to reinforce the inner ends of the butt welds 8 the flanges 4 of the bottom arch bar are formed with projections 9.

Side frames of this character are subjected to very heavy stresses and the bottom arch bar forming the bottom chord is under heavy tension much greater than that in the top arch bar forming the top chord of the truck side frame.

Toiurther stiffen the bottom arch bar of the side frame a reinforcing member l0 stamped out of sheet metal is inserted between the flanges of the bottom arch bar with its opposite side edges continuously welded thereto as at' l I, said reinforcing member, is placed to best advantageto oppose the strains to which the bottom arch bar .is subjected.

The truck columns I2 are formed of pressed sheet metal, each having a web l3 and flanged edges ll of varying width eachhaving its opposite ends inserted between the flanges of the top and web I3 is welded as at l8 to the top of the rein forcing member ID. Adjacent to the brake hanger brackets 38 the web l3 andflanges M of the truck columns are each reinforced by means of a 10 tie plate 19 which are placed in position and welded thereto as at 20. Similar reinforcing tie plates 2| connect the flanges 2 of the top arch bar I and are welded thereto at spaced intervals as at 22.

A spring plank seat is formed of a flat plate 23' having its ends bifurcated as at 24 and bent upwardly and welded as at 25 to the flanges 4 of the bottom arch bar and the top surface of the reinforcing member ID. This spring plank seat is formed with depressions 26 and perforations 21 for receiving dowels 28, which are welded thereto as at 29. These dowels are adapted to interlock and-hold a. spring plank 30, indicated in dotted lines in Figs. 1 and 5. The spring plank seat plate 23 is of greater width than the bottom arch bars, the laterally extending por= vtion of whichat, the point beneath the depressions 26 and thedowels 28 are each reinforced by means of a triangular bracket plate 3! which 30 is welded to the side of the flanges 4 of the bottom arch bar and the lower surface of'the extending portions of the spring plank seat plate. Cast journal boxes 32 are attached to each end of the truck frame. The main body of these journal boxes is of well known standard construction, but each journal box has'an additional bracket arm 33 extending downwardly and inwardly therefrom which are adapted to be welded as at 34 to the inclined portions 8 of the bottom arch bar 3 thereby forming a more rigid connection at this point between thebottom arch bar and the journal boxes. These bracket arms 33 are further reinforced by means of webs 35.

The tops of the journal boxes are each formed v with spaced ribs 36 between which are seated the ends of the bottom arch bar 3, the side to the inner side of the top of each truck col-,

umn and the' inner flange 2 of the top arch bar I. The inner or freev end of each brake hanger bracket is bent into U-shape as at $2 to form jaws adapted to receive the upper end of a hanger link (not shown). The U-shaped jaws 42 are perforated as at 43 to receive a retaining pin after the hanger link has been suspended in the bracket.

It will be noted that a truck side frame embodying our invention can be economically manufactured from relatively small blanks which can be readily formed and which are capable of being easily assembled and firmly united by weld-,

scope ofour invention, or. aspointed out in the claims.

Having thus described our invention what we 'claim as new and desire to secure by Letters Patent is:

1. A truck side frame comprising separate top and bottom archbars of trough section having their end portions welded together, and a sepaarate plate reinforcement enclosed by and coextensive with the bottom arch bar and connected thereto on the opposite side edges by a continuous weld.

2. A truck side frame comprising separate top and bottom arch bars of channel section having the flanges at their end portions welded together, and a separate reinforcing plate inserted within the bottom arch bar and extending continuously the entire length of said bottom arch bar having its opposite side edges secured thereto by means of a continuous welded connection. I

3. A truck side frame comprising separate top and bottom arch bars of channel section disposed with their flanged edges facing each other -plates connectingthe flanges of .the top arch bar.

4. A truck side frame comprising a top and bottom arch bar of channel section disposed with their flanged edges facing each other and welded together at the end portions, a continuous reinforcing plate for the bottom arch bar mounted therein, a continuous welded connection between the reinforcingplate and the bottom arch bar, and truck columns of channel section'mounted between the flanges of the top and bottom arch bars having their lower ends welded to the top of the continuous reinforcing plate.

5. In a truck side frame, a top arch bar of trough section disposed with its flanges extending downwardly, abot'tom arch bar of trough section disposed with its flanges extending upwardly and the edges of the end portions butt/welded to the edges of the end portions of the top arch bar, said bottomarch bar being of greater depth and width at its central portion than the top arch bar, a reinforcing plate extending from end to end of the bottom arch bar between the flanges and continuously welded thereto, and a cast metal journal box welded to each end of the bottom arch bar.

6. In a truck side frame, a top arch bar of trough section disposed with its flanges extending downwardly, a bottom arch bar of trough section disposed with its flanges extending upwardly with the edges of its end portions butt welded to the edges of the end portions of the top arch bar, reinforcing plates connecting the intermediate p rtionsof the flanges of the top and bottom arch bars, a spring plank seat consisting of a plate having bifurcated end portions welded to the outer faces of the flanges of the bottom arch bar and its reinforcing plate, said spring plank seat plate extending laterally on each side of the bottom arch bar, perforations formed in the laterally projecting portions of the spring plank seat plate, a dowel in each perforation welded to the spring plank seat plate, and a bracket plate welded to the bottom of each dowel and the side flange of the bottom arch bar.

7. In a truck side frame, a top arch bar of trough section having tapered end portions disposed with its flanges extending downwardly, a.

bottom arch bar of trough section having tapered end portions and a central portion of greater width and depth than the top arch bar disposed with its flanges extending upwardly and the edges of the flanges at its end portions butt welded to the edges of the flanges of the end portions of the top arch bar, and a continuously extending reinforcing plate for the bottom arch bar mounted therein having its edges welded to the bottom arch bar.

8. In a truck side frame, a top arch bar of substantially uniform trough section having tapered endportions disposed with its flanges extending downwardly, a bottom arch bar oftrough section having end portions tapered to the same width as the end portions of the top arch bar, said bottom arch bar having a central portion of greater width and depth than the top arch bar and disposed with its flanges extending upwardly and the edges of the flanges at its tapered end portions butt welded to the edges of the flanges of the end portions of the tapered portions of the top arch bar, a reinforcing plate mounted between the flanges of the bottom arch bar and extending from end to end thereof having its intermediate opposite side edges welded to said flanges and its end portion welded to the web of the bottom arch bar, and a cast journal box welded to each end portion of the bottom arch bar.

9. In a truck side frame comprising pressed metal top and'bottom arch bars of trough section having their end portions welded together,

truck columns having their ends welded to the top and bottom arch bars at an intermediate point, a separate reinforcing plate inserted within the bottom arch bar and extending continuously the entire length of said bottom arch bar having its opposite side edges secured thereto by means of a continuous welded connection, a spring plank seat plate between the truck columns welded to the flanges of the bottom arch bar and the reinforcing plate, and dowels welded to the spring plank seat plate.

10. In a truck side frame, comprising pressed metal top and bottom arch bars of trough section having their end portions welded together, a plurality of reinforcing plates connecting the flanges of the top arch bar, a continuously ex tending reinforcing plate secured in the bottom arch bar, pressed metal truck columns of trough section having their ends welded to the top and bottom arch bars at an intermediate point, and a spring plank seat plate between the truck columns having bifurcated ends welded to the flanges of the bottom arch bar and the continuously extending reinforcing plate.

11. In a truck side frame comprising separately formed top and bottom arch bars of trough section'having the edges of the flanges at the end portions welded together, truck columns of trough section having their top and bottom ends welded to the top and bottom .arch'bars, a brake hanger bracket of; pressed metal having an arcuately formed base portion with-its inner end flanged and welded to the top arch bar and one of the truck columns, and a u-shaped inclined jaw formed at the extending end of the hanger bracket constituting a seat for a hanger 12. In a truck side frame comprising a top arch bar of trough section disposed with its flanges extending downwardly, a bottom archbar of trough section having inclined intermediate.

portions and horizontal end portions disposed with its flanges extending'upwardly and the flanges of its end portions butt welded to the flanges of the end portions-oi the top'arch bar, projections extending from the flanges of the bottom arch bar welded to the flanges of the top arch bar, reinforcing plates connecting the flanges of the top and bottom arch bars, a cast journal box welded to each horizontal end portion of the bottom arch bar, an extending bracket arm formed integral with each cast journal box a welded to the inclined portion of the bottom arch bar, truck columns of channel section mounted between the flanges of the top and bottom arch bars having their ends welded to said arch bars, a spring plank seat consisting of a plate having bifurcated end portions welded to the outer faces of the flanges of the bottom arch bar, a brake hanger bracket of pressed metal having an armately formed base portion with its inner end flanged and welded to the side frame, and a U-shaped jaw formed at the extending end of the hanger bracket.

13. In a truck side frame, a top. arch bar having flanged edges formed of a plate of uniform thickness, and a bottom arch bar having flanged edges formed of a plate of uniform thickness of thinner material than the top arch bar having its end portions welded to the top arch bar, a

plurality of tie plates for connecting the flanged edges of the top arch bar at intermediate points at spaced intervals, and a reinforcing plate extending from end to end of the bottom arch b'ar between the flanges and continuously welded thereto.

14. In a truck side frame, a top arch bar of trough section formed of a plate of uniform thickness and a bottom arch bar of trough section formed of a plate of uniform thickness of thinner material than the top arch bar having its end portions welded to the top arch bar, a plurality of tie plates for connecting the .flanges of the top arch bar at intermediate points at spaced intervals, a reinforcing plate extending from end to end of the bottom arch bar between the flanges and continuously welded thereto, and cast journal boxes each comprising an integral casting welded to the end portions of the bottom arch bar.

- 15. In a truck side frame, a top arch bar of trough section formed of a plate of uniform thickness disposed with its flanges extending downwardly, a bottom arch bar of trough section formed of a plate of uniform thickness of thinner material than the top arch bar disposed with its flanges extending upwardly and the end portions butt welded to the end portions of the top arch bar, a plurality of tie plates for connecting the central and intermediate portions of the flanges of the top arch bar, a reinforcing plate extending from end to end of the bottom arch bar between the flanges and continuously welded thereto, a spring plank seat welded to the reinforcing plate and the flanges of the bottom arch bar, and cast journal boxes each comprising an integral casting welded to the end portions of the bottom arch bar.

16, In a truck side frame, a top arch bar of trough section formed of a plate of uniform thickness disposed with its flanges extending downwardly, a bottom arch bar of trough section formed of a plate of uniform thickness of thinner material than the top arch bar having inclined intermediate portions and horizontal end portions disposed with its flanges extending upwardly and the flanges of its end portions butt welded to the flanges of the end portions of the top arch bar, a plurality of tie plates for connecting the flanges of the top arch bar at spaced intervals, a

reinforcing plate extending from end to end of the bottom arch bar between the flanges and continuously welded thereto, a spring plank seat arch bar.

17; A truck side frame comprising separately formed top and bottom arch barsv of channel section disposed with their flanged edges facing each other and the edges at the end portions butt welded together, a separate plate reinforcement extending continuously the entire length of the bottom arch bar inserted therein having its opposite side edges secured thereto by means of a continuous welded connection, truck column members of channel section having their opposite ends welded to the top and bottom arch bar and the separate plate reinforcement, and reinforcing tie plates for connecting the flanges of the intermediate portions of the top arch bar and truck columns.

18. A truck side frame comprising separate top, bottom and truck column members of channel section formed of pressed sheet metal connected together by welding, transversely extending tie .plates for connecting the flanges of the column members and top arch bar at intermediate points,

-a continuous reinforcing plate for the bottom arch bar mounted therein, a continuous welded connection between the reinforcing plate and the bottom arch bar, and a cast journal box comprising an integral casting welded to each end of the side frame.

19. In a truck side frame, a top arch bar of trough section disposed with its flanges extending downwardly, a bottom arch bar of trough section disposed with its flanges extending upwardly with the edges of its end portions butt welded to the edges of the 'end portions of the top arch bar, reinforcing tie plates for connecting the intermediate portions of the flanges of the top arch bar at spaced intervals, a separate reinforcing plate inserted within the bottom arch bar and extending continuously the entire length of said bottom arch bar having its opposite side edges secured thereto by means of a continuous welded connection, and a spring seat consisting of a plate having bifurcated end portions welded to the outer faces of the flanges of the bottom arch bar and its-continuous reinforcing plate.

20. In a truck side frame comprising separately formed top and bottom arch bars of trough section having their end portions welded together, cast journal boxes welded to each end portion of the bottom arch bar, tie plates connecting the flanges of the top arch bar at spaced intervals between the journal boxes, a continuous reinforcing plate for the bottom arch bar mountedtherein, a continuous welded connection between the reinforcing plate and the bottom arch bar, truck columns of trough section having their top and bottom ends welded to the top and bottom arch bars and the top of the continuous reinforcing plate, a brake hanger bracket having a base portion with a flanged inner edge welded to the side frame, and a U-shaped inclined jaw formed at the extending end of the hanger bracket.

CHARLES SCI-IENCK. LOUIS G. MILIER.