US1034488A - Side frame for railway-trucks. - Google Patents

Description

A. C. MURPHY. SIDE FRAME FOR RAILWAY TRUCKS. APPLICATION FILED APR.22,1911.

Patented Aug. 6, 1912.

IIII I .llil JJ mg, said opening being arch bar structure and are .lLBERE C. MURPHY, 8F KEV? UOMPJ'LNY, A IGRPORATION 0- NEW" YORK.

$IDE FRAME FOR RAIL'LVAY-TRUCI$.

Specification of Letters Patent.

Patented. fling. 1912.

Application filed itpril 259, 1811. Serial Ito. 622,595.

To a/Z? whom it may concern:

Be it known that I, ALBERT C. lvlunrrrr, a citizen of the United States, resident oft New York, county of New York, and State of ew York, have invented an Ii'nprovement in Side Frames for Railway-Trucks, of which the following is a specification,

y invention has reference to side. frames for railway trucks and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings which form a part thereoi.

The object of my invention is to provide a cmistruction of built up truck side frame which shall embody great strength and dusame time employ girder rability and at the frames in its make up, preferably of comand sheet metal, wheremercial forms of bar by economy may be secured in thecost of production, th e frame to be light in weight and to embody a construction capable being: produced without the necessity of costly in'ery.

Y obj 's also to provide of" built side "frame for in which columns leretolor be entirely dispensed with, as it is found in practice that any construction which requires tlie use 01"" vertical guide bolts for holding the column. in position between the top arc-h bar and the bottom arch bar is objectionable in that the nuts are liable to become loosened and the general structure weakened by the looseness so provided.

More particularly, my objeciis to n vide columns which are integral. with the W not dependent in any way upon bolts for their strength or position.

My invention consists of a construction 01 side frame for trucks in which the main member comprising the top arch bar shall be formed of steel bars of girder form in cross section, preferably of channel construction and so shaped as to provide at the middle of the truck a vertical holster opena formed by vertical portions of the steel bars of girder or chan nel shape which act as columns and having horizontallyturned bottom portions for reception of the'spring base channel, combined with a compression or strut member bridga construction railway trucks e employed will ing the bolster opening at the top and sernel cross-section, which is more l l i l l l r l cured in place by a cover or compression plate, the ends of which are riveted to the girder or channel top arch plates secured in position at the lnside upper portions of the columns or strengthen the angular bends of the girder or channel bar between the top arch bar portion and the column portion, said gussetplates being so secured to the column portions as to provide smooth outer surfa es to the same whereby they may act as ides for the bolster, a tension member or bottom arch bar connected at its ends with the free ends of the top arch bar portions and having its middle portion extended un der the horizontal girder or channel barportions at the base of the bolster opening, a tie bar also secured to the tension member and the channel iron structure at the base oi the bolster opening, and journal boxes for the axles secured between the free ends of the tie bar and the fr arch bars and tension members.

.11. invention further consists in various letails embodied in the type of built up tlllClE side frame, above specified, and which are fully described hereinafter and more particularly defined in the claims. ;lleterring to the drawings: Figure l is a and to rem force trucks embodying plan view of the same; Fig. 3 is cross section of the same on line z 2-; Fig. l. is a cross section of a portion of the same on H and Fig. 5 is a section of a portion of the same on line y-y 2 arethe arch bars which extend from box to aide box of the truck, and instead of being continuous over the bolster opening 20, said top arch bars are bent ownward' to for then backward as at 4 to form the wider part to the bolster opening;- adjacent to the bottom thereof and thence inward as at 5 to form the bottom of the bolster opening. The wider lower portion of the bolster open ing 20 between the parts 4:, 4:, provides a space below each 01" the column portions 3, 3, iorthe introduction of the usual bolster guides before the bolster is raised lion forits guides tion 3, 3., llhese preferably formed Fig: 2 is a a vertical as ends of the top,

in the vertical portion into posh to cooperate w th the per- Lose-Ass in Figs 3, and 5. The opening between the parts 2 at the top of the bolster opening is closed by the coinp n strut 6 and the cover or compression is 7, these two parts being secured together by rivets 8 and. the ends of the cover plate secured to the top of the top arch bars by rivets 9.

The compression. strut: 6 formed of a piece oichannel iron of approximately the preferable cross section of the top arch bar and of a length to just {it in the space between the two vertical eolumirportions 3, as clearly illustrated in Fig. 1. In practice, one oil. the flanges of this compression strut bent inwar'i', as indicated in Fig". 3 for he purpose of providing clearance space for parts ot the i'iuivahle bolster. To strengthen tl e girder or channel be at the sharp bend between the parts 2 and provide gusset plates 10 'ivluclr thereof, '1 are formed of steel and rimied to the side flanges of the parts and at the points 11, and preferably welded by any suitable method at the points indicated at 12, these pointsbeing the same with respect to both flanges ol. the girder or channel iron, it four gusset plates be en'iployed. This weldinn union is indicated more fully in Fig. i,

and the object of Welding the gusset plates to the flanges oi' the girder or channel iron is to secure a union of the two parts without presenting any obslrlmtions upon the outer surfaces, so that the said outer surfaces may-present smooth guiding; surfaces for the guides of the bolster, Of course, it is evident that countersunk rivets might be employed, as is common in sheetiron working in place of the welded portions 12, but the presence of these rivets would weaken the structure or the column portion and would not make as rigid or firm aunion as the welding. It is also evident that the rivets 11 on the coluu'ms and below the welded portions 12 may be also welded if so desired. In fact, the gussct plates may be secured in place by welding at all places if so desire l. In any event. and irrespeetire of the particular manner oi uniting the gusset plates to the vertical portions 3 turns ing the columns, the outer surface of said column portions must be imobstructml sutficiently to provide smooth guide surfaces of the requisite width to permit the holster. guides to move freely upon the said c0lumns. If desired, the gusset plates 10 may be arranged-only on the inner side of the truck side frame, namely, adjacent to the brake hanger parts 19.

13 represents the tension member, and at its :Erec ends it is riveted to the ends of the top arch bars by rivets l8 and the thickness of this bar '13 is substantially equal to the depthof the groove in the preferred channel i-ron structure of which, the top arch 4 bar is formed, so that very little finishing of the edges of the flanges of the channel bar are necessary to permit them, as well as the tension member, to fit snugly upon the top of the journal box 16. The middle portion oi? the tension member extends un der the portion 5 of the channel iron adjacent to the bottom of the bolster bpening, and said tension member is riveted to the channel iron portions by the rivets 14 and 15. In additionto the tension member 13 described and which in effect constitutes the bottom arch bar, there is a second tension member 12 which is riveted to the tension member 13 and channel iron horizontal up tensions of the columns by the rivets lei.

before-referred to, and the free ends of this tie bar extend under the journal bOXBs 1G. The journal boxes ltiare clamped between the free ends of the tie bar 12 and the free ends of the top arch bar and its tension member or bottom arch bar by means of the bolts 17.

The construction of truck frame above described has the double. tension members and 18 and the upper compression member formed by the parts 2, 7, 6, 2; and said top arch bar structure and tension member or bottom arch bar structure are combined into a rigid girder structure by t-l1'e e1 nploy ment or the column portions 3, 1- and the gusset plates 10, above described.

In practice, 1 find it more convenient to make each of the parts, 2, 3, and l separate and rely upon them beingconnected into a continuous structure by means of the rivets it and 15 associated with the tension member. 13 and the tie bar 1 I, however, do not restrict myself to the dividing of these two port-ions or" the girder .or channel bar structure adjacent to the bottom part 5, as said parts may be continuous, indicated in dotted lines. It will, however, be readily understood that the making of the urious parts 2, 3, at, and 5 extending from axle-box to axle-box would involve a much more complicated set of bending dies and would require more careful and expensive manipulation to 'insure the proper associ ated' bends, and I theretoreprefer that the girder or channel bar port-ion shall be made in two similar parts, subsequently to be connected in alinement at thebottom of the bolster opening by the rivets 1st and 15 in connection with the tension members 12- and 1S, and more particularly the latter. In all cases, whether the girder or channel bar parts are made in one or two sections, the rap forming the top of the bolster opening 20, is positively closed-by the compression strut and the cover plate hereinafter re-.' tel-red to or equivalent structures, so that member, which may be properly termed the I volition r I end flanged e" j T menses be in general shape i he tension member g the bottom arch bar. The of the girder or channel bar fl'Cljlw cent to the bottom of the bolster opening are bent outward into alinement with the body'of the channel iron to lorm Wings, in-

dlcaled at 21, said Wings being provided with loles and acting as means of attachment tor the spring base channel.

L are brake hanger brackets and are formed cl sheet mcicl bent in special form 5 their bases. said flanges being riveted to the gussset plates 10 on the inner side 01 the truck frame; end while this manner of attaching the brackets .is a satisfactory one, I, howeven do not limit myself to any particular form of brake hanger bracket, as such. elements and mode of attachinent ere of minor importance to the real invention which comprises the built up truck side frame whereby great strength is secured with lightness and cheupness and preferably by the employment of ordinary commercial stock forms of metal bars.

The more important features of my in ide in the continuity of the ports 2 and 8, whereby thegirder bar forming the column and the top orch bar portion leading to the journal box are in one integral piece; and secondly, in the oppositely arranged portions 2, 2, of the top arch bar and the column portions 3, 3, combined with the interposed connecting portion 7preierably having the strut 6. By his construction, all bolted or riveted joints or unions between the ports 2 and 3 are avoided and hence ilie of looseness of the columns in use is Wholly avoided. The employment girder forms of bars give great lighlnes' coupled with the icsi-red strength and, 21101 over, the use channel ports 3, 4%.- and 5 has the advantages of forming sockets between the side flanges which look the tension member or lower arch in place against lateral displacement, T greully reducing the shearing strain rm of bar in the making of the rolled girder shapes L re the truck frame, it is evident'thst such inder bars may be otherwise' formed, as for example, by being pressed, info the resui 'l'e cross section, but,

I th s 1s immaterial my invention resides in the truck structure and not in the particular manner of lornnne; he bars from which the elements thereof are composed.

While I have shown my invention in the exact form which'l have found by practical edia-ptetion of inyinvention to bellie form which is most suitable, I do not restrict mysell to the details as these may be modified without departing from the spirit of the in rent-ion,

from the axle of the preferred tion What I claim as new and desire to tors Potent is:-

L. In a built up side frame for railway trucks, at. top arch bar formed of channel iron portions spaced snort and connected together by e compression strut and cover plate closing -the top part of the bolster opening and said channel iron portions of the top arch bur bolus; extended vertically downward to form columns and thence cxtended horizontally toward each other to form the bolster opening, combined with axle boxes, and tension members extending from the oxle boxes beneath the columns of the channel iron and secured thereto.

2. In a built up side frame for railway trucks, :1 top arch bar formed of channel iron portions spaced apart and connected together by a compression strut and cover plate closingthe top port of the bolster opening, and said channel iron portions of the top arch bar being extended vertically downward to form columns and thence extended horizontally toward each other to form the bolster opening reinforcing gusset plates secured to the flanges of the top arch or portions and in which the outer surfaces of the flanges of the column portions are fist to form smooth guiding surfaces upon each side of the bolster opening: combined With oxle boxes, and tension members extending boxes beneath the column portions and secured thereu'o.

3. In a built up side frame for railway trucks, :1 top arch be; formed of channel iron portions spaced apart andyconnectcd' -togethcr by a compression strut and cover plate closing the top part of the opening,

and said channel iron portions of the top arch bar being" extended vertically downward to form column portions and thence ex tended horizontally toward each other to form the bolster opening, reinforcing gusset )lntes secured to the flanges of the top arch bur portionsand the column portions suit gusset plates being secured to the angcs oi the top arch bar portions by rivets and to the non portions spaced apartand connected toge her by a compression strut and cover plate closing the top part of the bolster opening, and said clmnnel'ironportions of th top arch bar seine extended vertically downward to form columns and. thence extended horizontally toward each other to form the bolster opening, and in which further the flanges of the horizontal portions of the channel iron adjacent to the bottom of the bolster opening are bent laterally into wings to provide means for attachment of the spring base channel beam, combined with axle boxes, and tension members extending' from the axle boxes beneath the column portions and secured thereto.

5. In a built up side frame for railwa trucks, :1 top arch bar formed of channel iron portions spaced apart and connected together bya compression strut and cover plate, closing the top part of the bolster opening and said channel iron portions of the top arch bar being extended vertically downward to form columns and thence extended horizontally toward each other to form the bolster opening, reinforcing gusset plates secured to the flanges of the channel iron of the top arch bar portions and of the column guide portions and in which the outer surfaces of the flanges of the column portions are flat to form. smooth guiding surfaces upon each side of the bolster opening, combined with axle boxes, tension members extending from the axle boxes beneath tire column portions of the channel iron, and brake hanger brackets securedlto the gusset plates upon each side of the bolster opening and extending laterally away from the said plates.

6. In a built up side frame for ailway trucks, the combination of a combined top arch bar and column structure formed of channel. iron, with suitable tension. members to form a truck frame extending from axle box to axle box. of the truck and said tension members of less transverse width than the width oi. the channel iron and inclosed between the side flanges thereof at their points of contact, said combined top arch bar and column 'structnrc further comprising two sections of similar form extending in opposite directions and having their ends inclosing and riveted to the tension members and their intermediate portions bent with an in cline upward and thence downward to form the columns and their portions at the bottom of the columns inclosing and riveted to the tension members, and a compression member connecting the upwardly inclined portions of the two arch bar sections and spacing them to form the bolster opening.

7. .ln a built up side frame for railway trucks, the combination of. a combined top arch bar and column structure formed of channel iron, with suitable tension menu bers to form a truck frame extending from axle box to axle him. of the truck and said tension members of less transverse width than the width of the channel iron and in- .closed-between the side flanges thereof at their points of contact, saill combined top -ster opening, gus. e

arch bar and column structure further com prising two sections of similar form extending in opposite directidns and having their ends inclosing and riveted to the tension. members and their intern'iediate port-ions bent with an incline upwi rd and thence downward to form thecolumns and their portions at the bottom. of the columns in .closing and riveted. to the tension members,

a compression member connecting the upwardly inclined portions of the two arch bar sections and spacing; them to form the bolster opening, and gusset plates secured to each of the side flanges of the channel iron sections forming the. npwardl inclined top member and the coznmn portion and located baclt of the outer side surfaces thereof.

8. In a. built up side frame for railway trucks; the combination of a combined top arch bar and column structure, with suit able tension members to form a truck fran'ze extending from axle box to axle box of the truck, said con'lbined top arch bar and. column structure comprising two girder sections of? similar form extending in opposite directions and having their ends riveted to the tension members and their intermediate porlions bent. with an incline upward and thence downward to form the columns, a compression member connecting the upwardly inclined portions of the two sections together and spacing them to term the bolt plates secured to the flanges of the girder sections forming the upwardly inclined top member and the column. portion and said union of the gusset plates with the last mentioned flan formed within the inner siwtaces of. colmnns at their vertical guiding; portions so as to form no obstructions thereon.

9. In a. built up side frame for railway trucks, a top arch bar to portions of girder cross. section spaced 'apart and connected together by a compression member closing the top part oil the oolster opening, said two portions of the top arch bar of girder cross section being extended rertica V downward to form columns integral with said top arch bar portions, a

:ll gusset plates secured to the flange portions of the top arch bar and located wholly back of the planes of the sides of the said top arch bar combined with axle boxes and ten sion members extending from the axle boxes beneath the column portions and secured thereto.

- In testimony of whica invention, 1 here unto my hand.

ALBERT C. lvll'lltlllY Witnesses .Jonn .H. ALLEN, WM. J. hit/torch.

ued oi two bar It i) O PHI

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