US1590799A - Side frame - Google Patents

Description

June 29 1926.

D. s. BARROWS SIDE FRAME Filed Sept. 28, 1923 2 Sheets-Sheet 1 June 29 1926.

D. s. BARRows SIDE FRAME I Filed Sept. 28, 1923 2 Sheets-Sheet 2 Patented June 29, 1926.

UNITED STATES-@PATENT QFFECE.

DONALD S. BARROW'S, OF ROCHESTER, NEW YORK, ASSIGNOR, BY ASSIGN- IlYIENTF-i, TO THE SYMING'JTON COMPANY, A CORPORATION GE MARYLAND;

SIDE FRAME.

Application filed September 28, 1323. Serialll'o. 685,427.

My invention relates to side frames for car trucks and has been primarily designed to provide a simple wrought metal construe-- tion which is both strong and stiff but comparatively light in Weight.

The invention, generally stated, consists in forming a car truck side frame from a relatively thin sheet or blank of metal shaped with a plurality of symmetrically formed side frame portions and folded so as to provide the compression member, tension member and truck columns. I

C ne of the principal features of the invention, particularly stated, is to provide a car truck side frame from a substantially square sheet-metal blank shaped to provide an inner Wall and an outer Wall disposed in spaced relation to each other, each of said Walls having a bolster opening, a plurality of truck column portions, a plurality of top arch bar portions, and aplurality of bottom arch bar portions, the angular disposition of said bottom arch bar portions permitting of the formation of the side frame from a relatively small blank in Which there is a minimum Waste.

Another object is to provide a car truck side frame formed from a relatively small sheet-metal blank having a plurality of top arch bar. portions, truck column portions, and bottom arch bar portions, said blank being folded along an axis of symmetry extending diagonally of the blank'whereby the opposite edge portions thereof form thetension member with its bottom arch bar por' tions disposed at an angle to the top arch bar portions of the side frame, Which angle corresponds to the angular relation of said opposite edge portions to the axis of symmetry of the blank.

A further object of the invention resides in the production of a Wrought metal side frame having symmetrically formed side frame portions, the arrangement of said portions in the blank from which the side frame is formed being such that part of the metal forming the symmetrical side frame portions extends in the direction of its rolling While other portions of the metal forming the oppositely disposed symmetrical side frame portions'is disposed in a transverse direction to its rolling as the result of folding the blank along an axis obliquely disposed with relation to the direction of rolling, said arrangement of the metal serving to greatly increase the strength value of the side frame and permit of itsformation from relatively thin sheetanetal blanks.

A still further object of the invention resides in the provision of a Wrought metal side frame formed from a sheet-metal blank shaped and cut to provide corresponding side frame-portions, the opposite corners of the blank being cut away, and the corner portions adjacent the diagonally disposed axis of symmetry of the blank permitting of the upper ends of the bottom arch bar portions receiving the journal boxes at the ends'of the side frame in a comparatively simple and reliable manner. v

A still further feature of the invention consists in the method of manufacturing a car truck side frame by forming from a sheet of metal a substantially square blank and providing in said' blank upon opposite sides of a diagonally disposed axis of symmetry corresponding side frame portions, s'omeof said side frame portions being arranged adjacent opposite edges of the blank andat an angle to its axis of symmetry, folding the blank along a line Which, throughout its length, is parallel to said diagonally disposed axis of symmetry, and uniting said side frame portions. r e

My improved method further consists in forming the blank With the bottom arch bar portions thereof disposed at substantially forty-tive degrees With respect to the axis of symmetry extending from corner to corner of the blank, folding said blank along said axis, and uniting the bottom arch bar portions, said bottom arch bar portions being maintained in their same angular relation with respect to the of symmetry, but having the direction of rolling of the metal differently disposed in opposite adjacent bottom arch bar portions of the blank.

There are other features of the invention pertaining to the particular formation of blank and the details of construction of the side frame, all as Will hereinafter appear.

- In the accompanying drawings illustrat- III ing the invention, the scope whereof is point-- ed out in the claims:

Figure 1 is a view in side elevation of a car truck side frame constructed in accordance withthe present invention.

Figure 2 is a vertical transverse sectional Figure is a detail view in side elevation of a'inodilied construction of journal box connected to theend of the side frame.

Figure; 8 is a detail. cross-sectional view on the line 8+8 of Figure 7.

Figure 9 is a view of the relatively square plate from which the blank is. cut, the dot and dash lines illustrating the outline oi the plate and the full lines showing the, contour otthe blank forming. the side frame.

Referring to the drawings inwhich similar reference characters, designate corresponding parts inzthe several views, my improved side frame is. composed of. an inner sheet-metal wall 1 andan outer sheet-metal wall 2, eachof said walls. being provided with a plurality of side frame portions. such as top arch bar portions 3, bottom arch bar portions 4, and truck column portlons 5. The

lower edges of the top arch bar portionsare provided with inwardly extending stiffening flanges- 6, said flanges.being continued around the junction of the top arch bar'portions with the bottomuarch bar; portions to provide stiffening. flanges.- 7 the vupper edges of the, bottom arch ,barpor tions. The truck columnportionsare formed along their outer edges with inwardly ex? tending stiffening flanges 8, saidv flanges 1 arranged along forming" continuations of, the stiffening flanges 6 and 7 to which they are integrally connected for reintorcing ad acent: portions.

of the side frame.-

The lower edges ofthe top .arch bar portions between the truck columns are provided with inwardly extendingv stiffening flanges 9, said tlangesbeingcontinued across,

the topofthe bolster opening; and down wardly along the-sides thereoi', as ndicated at 10. The inwardly: extending flanges 10- stitlen the, truck column portions. of the side fraine'and are preierably adapted to be overlapped and united by. means ofrivets 11 located' between the offset portions. of the truck columns and their points of junction with the beam portionof the s de frame extending beneath, the bolster opening The stlfl'ening flanges 1O bordering, the truck.-

columns are continued beneath the bolster open ng, as indlcat'edby the numeral 12.

tions.

atan angle corresponding to the angular-- disposition ofthe bottom arch barxpor-tions, r1vets 15 being designed to pass through the inwardly extending stiffening flanges 13 and a suitablewebtportionlfi of the journal box.

The web portion 16 of the journal box forms a seating. portion for the outer ends said webbei ng shaped to embrace the inner, and, outer side walls of, the" side frame at their junction with the inwardly; extendingv stiffening flanges 13, as indicated by the numerall? in. Figure 9. The web portion 16; of the journal box is connected thereto .by a plurality.ofupwardly extending longitudinally disposed ribs 18, the outer ends ofsaid ribs being preferablyldisposed in the same plane as the endsot the sidetrame'. The inner endsot the ribs 18v are connected by a trans versely: disposed'wall 19, said wall'uniting,

the inner edge of the weblti with the inner side wall of the journal box. This arrangement ofjournal box and side frame endis of comparatively simple. construction, it being observed; that the vertical loads are transmitt'edthrough the reinforced web portionsilfi as-arealso the longitudinal and rota: tive force's-developed under. service condi- The riveting "of the box to the in-I turned stiffening fiangesi permits of cone venient; assembling of the parts and, as will be observed, affords a very rigid connection between the inner and outerside walls ottho side frame to (prevent their separation.

The inner ecges of the flanges are also preferably, Welded at'a plurality oot spaced. points, as indicated at 20, said welds being advantageously located to prevent the separatio'nof the innerand outer walls of the side frame at the'critical points thereof.-

' Referring-to Figure 9,.my1 improved sideframe. is constructed from, a relatively thin sheet-metalplate cut square, as shown by the dotted lines in said vfigure. 'lhe correspending side frame portionsformed in the blank are disposed upon oppositesides of, an axis of symmetry extended diagonally ofthe blank and obliquely to the direction ofrollingofthe inetalindicated by the arrow. The, corners of the plate adjacent the ends.ot thediagonally disposed axis are cut away, as indicatedat 21, saidcut away portions constitutingthe respective endsof the side frame inwh-ich the-bottoin arch; bar portions Kl thereofterminate. I The cut away portions are preferably curved, as shown, and when the 7 blank is folded the inner and,

of thebottom arch bar portions, portions-of f outer side walls thereof are angularly disposed at the ends of the sideframe for cooperation with the vertically disposed reinforcing ribs 18 of the journal box ofwhich they constitute continuations.

The opposite corner portions of the plate are cut away adjacent the beam member of the bottom arch bar portions, will be ob served by reference to Figure 9 in which the contour of the side frame blank and the re spective side fame portions are depicted in full lines. 7

The bot-tom arch bar portions of the side frame are formed along the opposite edge portions of the square blank, the angular disposition of said bottom arch bar portions w.ith respect to each other being that of a right angle and their angular relation to the diagonally extending axis of symmetry being that of forty-five degrees. These same relative angular arrangen'ients of the bottom arch bar portions are maintained in the completed side frame. 7

The blank is folded along a line parallel to the diagonally extending axis of symmetry, it being observed that in the folding of said blank the direction of the rolling of the metal is disposed differently in adjacent arch bar portions, that is to say, the direction of rolling of the metal is disposed longitudinally of one side frame portion and transversely of the other side frame portion in each side wall of the side frame. The relative strength of the bottom arch bar portions is increased as the result of this construction in that some of the bottom arch bar portions take the stresses in the direction of rolling of the plate.

It will be observed from the foregoing method of blanking a sheet-metal plate with corresponding side frame portions upon opposite sides of an axis of symmetry disposed obliquely to the direction of rolling of the plate, that a relatively small and thin metal blank can be utilized and a side frame constructed which not only has the merit of being formed of light and reliable material, but the disposition of the metal in the sev eral parts is such that the points of the side frame subjectedto greatest strains in service, are rendered exceedingly strong.

upstanding ribs 18 are continued upwardly and embrace the walls of the frame to which they are connected by means of rivets 18".

and journal box in resisting transverse forces. 7

It Will be noted that my improved constructlon of side frame end and ournal box involving the angular disposition of the contacting portions of the journal box with a similarly inclined end portion of the frame together with thedisposition of the rivets of said connection, is such that the relative rotative forces imparted to the journal box as the result of service conditions are effectively resisted.

lf claim: 7

l. A car truck side frame formed from a substantially square sheet-metal blank folded to provide an inner wall and an outer wall arranged in spaced relation thereto, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, and a plurality of bottom arch bar portions, said bottom arch bar portions lee-- ing disposed at an angle to the top arch bar portions corresponding to the angle of said bottom arch bar portions to the axis of symmetry of the folded blank.

2. A car truck side frame formed from a substantially square sheet-metal blank folded to provide an inner wall and an outer wall arranged in spaced relation thereto, each of said Walls having a plurality of truck column portions, a plurality of top arch bar portions, and a plurality of bottom arch bar portions, said bottom arch bar portions being produced from opposite edge portions of the blank and disposed at an angle to the top arch bar portions corresponding to the angular disposition of the opposite edge portions of the blank to thea'xis of symmetry of the folded blank.

3. A car truck side frame formed from a substantially square sheet-metal blank folded to provide an inner wall and an outer wall arranged in spaced relation thereto, each of said walls having a plurality of truck column portions,-a plurality of top arch bar portions, and a plurality of bottom arch bar portions, said bottom arch bar portions be ing each formed from adjacent edge portions of the blank and disposed at an angle of forty-five degrees with respect to the top arch bar portions ofthe side frame.

L. A car truck side frame formed from a substantially square sheet-metal blank folded to provide an inner wall and an outer wall arranged in spaced relation thereto, each of said walls having a plurality of truck column portions, a plurality of top arch bar portions, and a plurality of bottom arch bar portions, said bottom arch bar portions being formed from opposite edge portions of the blank and being united along their bottom edges. r

5. A car truck side frame formed'from a single square sheet-metal blank folded to provide inner and outer spaced side Walls,

each of said walls being formed with a plu rality of symmetrically shaped side frame portions, some of said side frame portions comprising opposite edges of the blank.

A cartr'uck sideframe formed from a square sheet-metal blank folded' to provide:

inner and outer sp'ace'd s-ideWalls; each of" said walls being formed wit ha pluralitfypf' truck column portions, a plurality oftop arch bar portions; a'plurality ofbott'om arc-h bar portions, said bottom arch bar port-ions comprising the oppositely disposed edge portionsof the blank.

A car truck side frame formed froma square sheetaneta'l' blank folded to provide lnner and outer side walls, each of sald side walls having a plurality oft'ruck column portions, a plurality of top arch bar por none, and a plurality of bottom arch bar portions, said bottom arch bar portionseom-- prising the oppositely disposed edge portions of the blank and being provided with inwardly extending stiffening flanges.

8. A car truck sideframeformed fro'ina square sheet-metal blank folded to provide inner andouter side walls, each of said-side Walls having-a plurality of truck colui-nn portions, a pluralit of top arch bar per-- tions, and a plurality of bottoinarch bar portions, said bottom arch barportions-comprisingthe oppositely disposed edgeportions of the blank and being-providedwith inwardly extending stiffening flanges extending throughout the length of the bottom arch bar portions and being adapted to be connectedto the journal boxes;

9. A blank for a side frame member-of a car truck, said blank having a plurality of symmetrically formed side frame portions disposed upon each side of an axis of symmetry diagonally dividing said blank.

10. A blank for a side frame member of a car truck, said blank'being provided with a plurality of' symmetrically'formedti'uck column port-ions, top-arch bar portions andbottom arch bar portions disposed upon op posite sides of an axis of symmetry diagonally dividing the blank.

11. A blank for aside frame member of a car truck, said blank being'substantially square and having a plurality of' symmet rically formed truck'coluinn portions, topj arch bar portions, and bottom arch bar portions disposed uponoppjosite sides of an axis of symmetry dia 'on'ally dividing. the blank, said bottom arch bar portions being formed of the oppositely disposeded e portions of said blank.

12. A blank for a side frame member of a car truck, said blank being square in shape and having a plurality of symmetrically formed side frame portions disposed upon opposite sides of an axis-of symmetry d1agonally dividing the blank, some of said side frame portions being formed of the oppositely disposed edge portions of the blank.

13. A square metal blankfor a side frame member of a car truck, said blank havmgan' axis off symmetry 3 disposed diagonally, of

the blank" and dividing t-lie sameinto two portions each of which lias'a bolster opening, top arch bar portions, bottom arch bar portions, and truck column portions. p 14; A square metalblank for a side frame member of a car truck; said blank having.

an axis of symmet'ry' obliquely'disposed with relation to tlie direction of rolling of the blank and" dividing the-same into two portionseach o'f wh'ich isprovided with a plurality of correspondingly formed sideframe portions;

15; A blank for a side frame member of a cartru-ck, said blank having an axis'o'f summetry obliquely disposed with* relation to the direction of rolling of the blank and dividing'thesame into two portions each of which is providedw'ith a plurality of top arch bar portions, a plurality ofjbottom arch bar portions, anda plurality, oftruck column portions. 7

16. A blank for a sidefra'me member-of a car-truck, saidblank having an'axis of symmetry obliquely disposed with relation to thefdirectio'n of rolling of the blank and dividing the same into two portions each of which is provided with symmetrically formed side frame portions.-

17 The method of manufacturing a car truck-side'frame which consists in forming a square sheet-metal blank with corresponth ing sideframe portions symmetrically dis posedwith respect to'an axis of symmetry passing between them, wh1ch axis. is arranged diagonally of'the blank, folding-said blank along a line which, throughout its length, is parallelto' saidaxis of symmetry, and uniting the side frame portions.

18; A method of manufacturing a' car truck side frame which consists in forming a square sheet metal'blank with corresponding'top-arch barportions, bottom arch bar portions, and truck column portion's' symmetrically disposed' with respect to an axis of symmetry passingbetween them, which axis-is diagonally arranged with relation to the blank, bending corresponding portions of'saId-blank'to formfianges adjacent the metal of-theblank, folding said blank alon a line parallel to said axis of symmetry, and

uniting said side frame portions.

20. The method of manufacturing a car truck side frame which consists in forming a square sheet-metal blank With corresponding side frame portions arranged upon 0p- 5 posite sides of a diagonally disposed axis of symmetry, Which axis is obliquely disposed to the direction of rolling of the metal,

bending corresponding portions of said blank to form flanges, folding said blank along a line which, throughout its length, 10 is parallel to said axis of symmetry, and uniting said flanges.

In testimony whereof I allix my signature.

DONALD S. BARROVVS.

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