US1718470A - Cast-steel side frame - Google Patents

Description

June 25, 1929. M. H. MARTIN CAST STEEL SIDE FRAME Original Filed May 5 1925 2 Sheets-Sheet gnvenfoo Sworn-c1;

llll I1 June 25, 1929. HIMARTW 1,718,470

CAST STEEL SIDE FRAME Original Filed May 1925 2 Sheets-Sheet. 2

Patented June 25,1929.

UNITED STATES MARK H. MARTIN, or' BALTIMORE, MARYLAND, ASSIGNOR TO THE sYMING'roN PATEN'IIOOFFICE.

COM-

PANY, OF NEW YORK, N. Y., A CORPORATION OF MARYLAND.

CAST-STEEL SIDE FRAME.

Application filed May '5, 1925, Serial N0. 28,066. Renewed August 20, 1928..

This invention relates to side frames for railway trucks and more'p'articularly to cast special reinforcements are employed at critical positions.

An object of my invention is the provision of a east side frame for-railway car trucks in which the various members thereof are upper corner of the inner brass lug and falls below the. normal upper inner Corner of the journal box, an additional reinforcement being provided between the lower flange of the tension inember'and the inner side of the journal box in the form of a flan ed web extending from the lower face" of tliedower flange of the tension member to the inner wall of the corresponding jour nal box.

Another object of my invention is the provision of a east side frame for railway car trucks comprising a compression member, a, tension member, and bolster column guide members therebet-ween, with a window opening formed between the bolster'guide members and the compression and tension members, said tension member being formed with an intermediate substantially, horizontal portion and withdiagonal end portions extending therefrom, the lower flanges of the diagonal end portions connecting with the corresponding flange on the horizontal portion belowthe window opening and inwardly of the bolster guide portions.-

A further object of my invention is the provision of a cast steel side frame for railway car trucks formed with a compression li einl ei', a tension member and bolster I column guide-or strut members spacing intermediate portions of said compression and tension members and forming therebetween a bolster or window opening, all of said members being generally T-shaped in cross section and the tension member formed with an intermediate substantially horizontal portion and diagonally extending end portions, the junction between the diagonal portions of the'tension member and the bolster column guide members being strengthened by a T-section reinforcement extending from the lower flange of the diagonal tension portions at the junction of the tension member and strut and diagonally from the window opening corners.

A still further object of my invention is the provision of a cast steel side frame for railway car trucks formed with a tension member, the upper flange of which is wide in the center to form a spring seat and tapered in width toward the ends thereof across the lower portions of bolster column guide members, and extended as a top flange of tension member, then around the triangular openings on opposite sides of the bolster column guide members.

A still further objectof my invention is the provision of .a east side frame for railway car trucks formed with a compression member having a substantially upright web and top flange portion, said top flange being curved downwardly at the ends thereof and united with the roofs of integral journal boxes substantially on the line with the'outer brass lugs from which it merges into the outer side walls of said journal boxes.

An additional object of my invention is the provision of east side frames for railway car trucks including brake hanger brackets substantially U-shape in cross-section, the web of the U-section being sloped upwardly and merging with the top flange ofthe side frame compression member and the legs of the U extending and joining with the lower flange of said compression'memclearer Figure 3 is across-sectional view taken Figure 6 is a sectional view taken on the.

line 6-6 of Figure ,5, and looking in the direction'of. the arrows.

Figure 7 is a sectional "View on the line.

7-7 of Figure 5, looking in'the direction ofthe arrows.-

Figures 8, 9, 10 and llare sectional views onthe correspondingly numbered lines of Figure 1, Figure 11 being taken looking in comprise web the direction ofthe arrows. Referring to the drawings inwhich similar reference characters designate like parts, there is illustrated a east side frame 1, 1n

the embodiment shown-comprising 'a .compression member 2, a tension member 3, bolster column guide members 4, and journal boxes 5. The compression, tension and bolster guide members are formed generallyIT or I'shaped in cross-section. That is,.they.-

ortions' 6 disposed in sub-'- stantiallyuprig t position, and flanged portions disposed on opposite ed es of, the web portion said flanged portions eing of differven't widths. and some of them tapering in width so that the members arethou ht more properly considered as generally in cross-section rather than I-shaped, al-

' web portion.

- diagonal portions Sand 9 preferably connect with the journalboxes' 5 at the junction bea tween the journal box roof-10 and the corresponding inner brass lug 11. That is, the lower webs or flanges of said diagonal tenthough they haveflanges on each, side of a The tension member 3 is formed with-an intermediate substantially horizontal portion 7 and diagonally disposed end portions 8 and 9. from said central portion 7. The

sion portions form-continuations of, the cor responding webs or flanges of the horizontal portion 7 and connect with the ournal boxes below the normal inner cornersthereof;

I For'strengthening the union between the side frame proper and. the journal boxes 5, reinforcing portions 12, extending from the .the lower flanges. of thei'diagonalhtension members 8 and 9, are provided. These reinforcements preferably take the form of webs 13 in line-with the webs 6 of the side frame members and flanges 14 extending therefrom,

said flanges and webs connecting directly with the lower flanges of the tension mem bers' and the inner side walls of the journal boxes, the flanges 14 preferably being substantially horizontal and connecting with the journalboxes at approximately the point compression and tension members,

'T-shaped. 23

of juncture between the lower portion of the inner brass lugs and the main walls of the journal boxes, asmost clearly illustrated at v the left side of Figure 1.

- For rigidly connecting the outer sides of the journal boxes with the side frame, the

upper flange of the compression member 2 is preferably curved downwardly at its outer ends, as shown at 15, and connects at each end with the journal 'box roof, approximately in line with the inner face of the outer brass lug 16. From the point of junction with the corresponding foot 10, the

flange is then continued, as shown at 17, as

part of the sloping outer wall of the corresponding journal box.

As a further bracin means between the ournal boxes and side frame proper, angular web-portions 18 are provided which extend from the roof of each journal box tothe web 6 of the side -frame proper. Between the upper and lower arch bars'or compression and tension members 2 and 3, respectively, and the bolster column guide or strut members/t, is formed a bolster or window openingv 19, and on-the outer sides of the bolster column guide members 4, between the are formed the'triangular openings 20 and 21. The bolster or Window opening 19, as is usual, is formed'.wider at its' lower than at its upper part so that the truck bolster may be readily inserted therein, the upper portion being provided with guiding flanges 22 and The upper web or flanges 24 of the tension member 3 between the bolster column guide portions 4, is formed relatively wide and preferably" provided with the spring I seating bosses 25 on the'upper surface thereof so that said web forms a spring seat of .ample width for the accommodation of the bolster springs. Said spring seat is pref-- erably tapered beyond the spring seating portions 25 and continued below the bolster column guide portions 4 as the upper we lCS' or flanges of the tension member 3, said upper web tapering in width from the junction with the spring seating portion 24ahd extending in tapered formation for the full length as the upper flanges of the tension member and preferably continuing around the triangularopenings 20 and 21, so as to form the lower flanges 26 of the compression member adjacent said openings, where it gradually merges to a uniform Width.

This feature is most clearly illustrated. in Figure -2,and results n economy of constructionas well as pleasing appearance.

The lower flanges of the diagonal members 8 and 9 connect with the lower flanges of the horizontal portion 7, beneath the bolster or window opening 19 and inwardly of the bolster column guide portions 4c. uch a construction improves the strength chararteristics of the frame and it will be apparent that the lower flanges of the diagoual portion of the tension member thus extend beyond the upper flanges thereof so that the upper horizontal flanges on the tension member are longer-than the corresponding lower flanges and thereby form a spring seating area of adequate proportions.

The spring seating surface 24 is preferably. reinforced by webs 27, most clearly shown in Figure 3, and preferably extending from beneath the portions 25 to the junction between the inclined lower flanges on the tension member and the-horizontal flange thereof.

For strengthening the critical portions of the tension member 3 beneath bolster column guideportions or struts 4, reinforcements 28 are provided. These reinforcements preferably take the form of T-shaped extensions diagonally disposed from the lower corners of the window opening 19 and formed with webs 29 extending as continuations of the web 6 of the tension member, and outlinedby curved flanged portions 30, merging at their ends into the lower flange of the tension member, said flanges 3O pref-' erably not extending lower than the lowermost portion of the flange of the tension member 3. These T-shaped portions 28 are most clearly shown in section in Figure 10, from which it will be apparent that their flanges 30 are relatively narrow compared with the lower flange of the tension-mem- 'ber.

Integral spring hanger brackets 31 are preferably provided, said brackets being generally U-shaped in cross-section and conthe compression member and the other be-.

ing bent angularly toward said bead for con nection therewith, as shown at 32. The reinforcing webs 33 preferably connect the beads framing the triangular openings 20 and 21 with the junctions between the lower horizontal bead or flange on the compression member and the bolster guide portions 22 and 23.

The compression member 2 is preferably of lighter section than the tension member because it is called upon to beai less stress than said tension member and the inner flanges of all of saidmembers are preferably formed thinner than the corresponding outer flanges thereof. The reason for making these flanges of different thicknesses is that truck side frames of this type are cast with the outer or front face on the cope or metal is poured into the mold the rear flange of the side frame is first forined and as the pouring is continued the metal rises until finally the front flange is formed. Un less provision is made to take. care of the difference in quality between the metal forming the front and rear flanges by increasing the thickness ofthe front flange, it will be obvious that the rear flange will have greater strength which results, when the truck is in service, in stressing the outer flange to a greater degree in proportion to its strength than the inner flange.

By providing, as above pointed out, flanges of unequal thicknesses this defect has been obviated so that the side frame is provided with opposite flanges of uniform strength. Of course, if the side frame were cast in the opposite way, that is with the inner or back face in the cope side of the mold,

the difference between the flange thicknesses would be reversed, the flanges formed in the cope side of the mold always preferably being heavier than those formed in the lower or drag side thereof.

In view of the foregoing, it will be appreciated that I have provided an improved integral side frame which is preferably formed of cast steel with journal boxes and brake hanger brackets preferably, but not necessarily, integrally united therewith.

Having now described my invention, I claim:

1. A truck side frame comprising a tension member, a compression member, bolster guide columns interposed between interme diate portions of said members, said members being generally T-shape in section, with the'web of said section arranged in substantially upright position, journal boxes at the ends of the frame, the lower flange of the tension member joining the journal box roof at the corner of the inner brass lug and falling below the normal upper inner corner thereof.

2. A truck side frame comprising a tension member, a compression member, bolster guide columns interposed between intermcdiate portions of said members, said members being generally T-shape in section with the web of thesection arranged in substantially upright position. journal boxes at the ends of the frame, said frame members and journal boxes being cast as one piece, the lower flange of the tension member intersecting the journal box below the upper inner corner thereof and united with the roof thereof at substantially the junction of the inner brass lug therewith.

3. A truck side frame comprising a tension member, compression member, bolster guide columns interposed between intermediate portions of said members. said members being generally T-shape in-section with the web of the section arranged in substantially upright position, journal boxes at the ends of i the frame,the under face of the lower flange v of the tension member beingwconneetedto the inn-er side wall ofthe journal box by flanged. web portions, substantially T-shape in section.

4. A truck sideframe comprising a tension member, acompression member, bolster guide columns interpocsd between interme diate por-tionsofsaid members, said menibers being generallyTsl'1ape in section with the web of the section arranged insubstantially upright position, journal boxes at the -end's of the frame, said frame members and ournal boxes being cast integrally as one piece, the underfaee'of the lower flange of the tension memberbeing integrally connected'to the journal box bya'flanged web portion,- forming with said lowerflange an approximate I-section.

5. A truckside frame comprising a tension member, a compression member, bolster guide (columns interposed between intermediate portions of said members, said menr bers being generally T-shape in section with the web of'the section arranged in substantially upright position, journal boxes at the ends of theframe, said frame members and journal boxes being cast as one piece, the lower flanges of the tensionmember intersecting the journal box below-the upper inner corner thereof and united with the roof thereof at substantially'the junction of the inner brass lug therewith, the-under face of the lower flange of the tension member being connected to said journal box by a gussetportion with a lower flange extending to the journal box at substantially the lower end of the inner brass lug. r

6. A truck side frame comprising tension 'an'dcompress'ion members with bolster guide columns interposed therebetween and'forming a bolster opening, said members beinggenerally T-shape in section with the webs "substantially upright, the tension member being formed with a substantially horizontal v the lower flange of the horizontal portion becentral portion under the bolster opening and' diagonal end portions, the lower flange of each. diagonal portion connecting with the lower flangeof the horizontal portion inwaidly of the bolster guide columns.

7. A truck side frame comprising tension vand compressionmembers with bolster guide columns interposed thercbetween and forminga bolster opening, said members being generally T-shape in section with the webs substantially upright, the tension member being 'formed with a substantially horizontal central portion under the bolster opening and diagonal end portions, the lower flange of each diagonal portion extending beyond the upper flange thereofand connecting with low the bolster opening and inwardly of the bolster guide columns.

8.;A truck side frame comprising -a compression member, a tension member formed tal portion and diagonal. end portions, bolster guide columns interposed betweensaid compression and tension members andforming a window opening therebetween, said tension member being generally T-shape in,- section with'the web substantially-upright, and a T-section reinforcement applied to the lower flange of the tension member at the junction of said. columns therewith, said reinforcements extending generally diagonally downward from the lower corners of the window opening.

10.?A- truck side frame comprising a com pression member, a tension member formed with an intermediate substantially horizontal portion and. diagonal end portions, bolster guide columns interposed between forming a window opening therebetween, said tension member having a relatively with an intermediate substantially horizon- ,said compression and tensionmembers and wide. upper flange on its horizontal portion,

forming a spring seat, said flange being extended as the upper flange of the diagonal end portions of the tension member and tapered in width around the triangular sion and bloster guideportions. I

11. Atruck side frame comprising a com pression member, a tension member, journal boxes connected at the ends thereof, the compression member 'being j formed with a top flange curved downw'ardlyat its ends and unitedwith thereof of each journal box in line with the wall forming the outer brass lug. 1

12. A truck side frame comprising a compression member, a tension member, journal boxes connected at the ends thereof, the

ire

compressionmember being formed with a top flange curved downwardly atits ends and united with the roof of each journal. box inline with the wall forming theouter brass lug; the outer end walls of the journal boxes, on each .sideof the said brass'lug, being sloped as continuations of the compres-' sion member top flange.

openings formed between compression, ten- 13. A truck side frame comprising a com- I -tions, the compression upright web and a brake member. 15. A truck side frame comprising a com- -uprigh't web thereon, and a brake hanger bracket con-.

pression member generally T-shape in section with an upper flange and substantially hanger bracket connected thereto,.,said bracket being generally U-shape in section with the web of the U sloped upwardly and directly connected to the upper flange of the compression member. A v p 14. A truck side frame comprising a compression member generally T-shape in section with an upper flange and substantially upright web with a lower thereon, and abrake hanger bracket connected integrally to said compression member, said bracket being generally U-shape in section with the web of the U merging into the upper flange of the compression member and the legs of the U connecting with the lower bead on the compression pression member generally T-shape in section with an upper flange and substantially with' a lower flange or bead nected integrally to said compression member, said bracket being generally U-shape in section, the legs of the U connecting with thevlower bead on the compression member. 16. A truck side frame comprising a compression member, a tension member and bolster column guides interposed between intermediate portions thereof, said members being generally T -sliape in cross-section with flanges extending inwardly and outwardly from substantially upright web pormember being of lighter section than the tension member, the inwardly'extending flanges of said members being of different strength than the corresponding outwardly extending flanges.

17. A truck side frame comprising a compression member, a tension'member and bolster column guides interposed between intermediate portions thereof, said members purposes of strength equaliintermediate portions thereof, said members flange or bead being generall T-Shape in cross-section with flanges exten ing inwardly and outwardly from substantially upri ht web portions, the

compression-member being of lighter section than the tension member with the inwardly extending flanges of all of 'said members being thinner than the outwardly extending flanges, to equalize the strength thereof.

19. A truck side frame comprising a compression member, a tension member, bolster guide columns interposed between said compression and tension members and forming va window opening therebetween, those portions of the tension member adjacent the junctions with the bolster columns being reinforced by flanged webs extending diagonally downward and outward from the lower portions thereof and the lower outlines of said webs being convex'downwardly.

20. A -truck side frame comprising a compression member, a tension member,

bolster guide columns interposed between said members and leaving'a window opening therebetween, sald'tenslon member COIHPIIS- -ing a lowertransversely extending portion continued from beneath the-window opening toward the ends of the frame, said portion being reinforced immediately below thebolster columns by upright web portions, the

ends of which gradually decrease in strength and merge into the tension member on opposite sides of the bolster columns.

In testimony whereof I afiix my signature.

MARK- MARTIN.

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