US1390434A - Side frame and tie-bar connection - Google Patents

Description

G. G. FLOYD.

SIDE FRAME AND TIE BAR CONNECTION.

APPLICATION FILED APR.8, 1920.

1,390,434, PatentedSept. 13,1921.

UNITE ST r s PATENT o FIcE.

GEORGE G. FLOYD, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEEL FOUN- DRIES, OF CHICAGO, ILLINOIS, A CORPORATION 015 NEW JERSEY.

SIDE FRAME AND TIE-BAR CONNECTION.

Specification of Letters Patent.

Patented Sept. 13, 1921.

Application filed April 8, 1920. Serial No. 372,223.

To all whom it may concern:

. Beit known that I, GEORGE Gr. FLOYD, a citizen of the United States, residin at Chicago, in the county of Cook and rtate of Illinois, have invented certain new and useful Improvements in Side Frames and Tie- Bar Connections, of which the following is a specification.

This invention relates to truck side frames and journalbox tie bar connection thereto.

In my copending. application, Serial No. 344,769, filed December 15, 1919, I have set forth at great length the causes and effects of cOmpressiom-tension and bending stresses set up in a cast metal side frame, and which are peculiar to the .casttype of side frame. In such case I disclosed a cast metal side frame having pedestal jaws for receiving separate journal boxes.

This present application relates more spe-' cifically to a cast metal truck side frame which has no pedestal jaws and which has no integrally-formed journal box, but preferably has integrally-formed longitudinallyext-ending portions at the ends of the frame to-which thestandard Master Car Builders journal: boxes are bolted. So far as thecompression, tension and bending stresses set up in thevframe,-and the means for overcoming same, are poncerned, this application is the samefas my copending application above mentioned. Accordingly, no repetition will be made. of the subject matter claimed in the copending application, and only such points as are necessary to give a complete understanding of-this present invention will beconsidered. l

In my said copending application I have emphasized the value of transmitting forces through the upper web side-0f the tension member and the compression member by directlyconnectingthe upper webside of the tension member to thecompression member instead of transmitting such. forces through the j ournal; box jaws or receiving portions However, in the type of side frame disclosed in this: application some mechanical obstacles are presented in securing the journal boxes to the frame in a manner to meet all requirements.- v r Accordingly, one object of this invention is to provide simple, eflicient and reliable means for securing journal boxes to east side frames, in which the web of the tension member is secured directly to the compression member at a'point adjacent the box fastening or securing members.

Another object is to connect the journal Fig. .2 is a fragmentary top plan view showing the connection between the tie bar ang the tension member of the side frame; Fig. 3-is a sectional view taken in the plane of line 38 of Figs. 1 and 2.

The various novel features of my invention will be apparent from the following description and drawings and willbe particularly pointed out in the appended claims.

Referring to the figures of the drawings, it will be noted that I have shown a cast side frame having a tension member 10, compression member 11, columns 12 (only one being shown) and journal box receiving portions 13 cast in a single piece. In this particular case the tension and compression members are U-shaped in section and have their webs 1 1 and '15, respectively, at the upper sides of said members and connected to each other at a point 16'over the flange 17 which receives the journal box 18, which in this case is the standard Master Car Builders journal box having the usualbolt lugs 19, 20, 21 and 22. r The advantages of having the tension and compression members 10 and lily-formed and connected in the manner here shown, has been considered in detail in my said copending application. Sufiice to say, in this connection, that by means of this arrangement excessive tension and bending stresses are obviated. While improving the cast type of side frame in the manner indi-' cated certain obstacles have been encountered in securing the journal boxes to the Fig. 1, for the reasons given, difliculty was presented in placing the inner journal box bolt 23 in position for holding the journal box. In two other copending applications, Serial Nos. 372,220 and 372,221, filed April 8, 1920, I have overcome the difficulties mentioned by providing the webs of the tension and compression members with alined openings for the reception of the inner journal box bolt. It may be preferable to secure the journal box to the side frame without puncturing the Webs of the tension and compression members. To this end I have provided the arrangement disclosed in this case, in which the inner journal box bolt 23 is applied, in a different manner. It will be noted that the side frame flange 17, to which the journal box is attached, is provided with an elongated slot 24 below and slightlyinwardly from the point of connection 16 between the webs of the tension and compression members. By providing the elongated slot, the inner journal box bolt 23 may be applied with the journal box in an inclined position, as indicated in dotted lines. -After the bolt is applied to the journal box, the bolt and journal box are moved into normal vertical position, this being done after the head 25 of the bolt can pass under the web 14 of the tension member. As shown in full lines in Figs. 1 and 2, the inner bolt 23 is in its proper fastening position wherein the bolt head 25 is located behind spaced lugs 26 to prevent lateral movement of the lug. The head 25 of bolt 23, and also the head 27 of outer bolt 28, rest upon the flange 17, the

bolts passing down through their respective journal box lugs and openings in a tie bar 29, the lower ends of the bolts receiving washers 30 and nuts 31.

In this case I have shown the journal box tie bar 29 connected tothe web 14 of the tension member 10, the inner end of the tie bar the shoulder the tie bar is provided with a round threaded portion 34, which extends through an opening 35 in the web 14 of the tension member, the nut 36 being applied to the threaded end 34 of the tie bar for rigidly holding the tie bar in place. Inter posed between the nut 36 and the upper surface of the web 14 of the tension member, is a nut lock 37 one flange 38 of which overhangs and embraces one side ofthe tension member, and the other flange 39 of which engages a side of the nut 36. In assembling the parts with this arrangement, the tie bar will not be set and secured inrplace until after the journal box and its bolts have been simple, efficient and reliable manner without puncturing the webs of the tension and compression members.

By providing the connection between the tie bar and the side frame, the use of a tie bar bracket is obviated. Such tie bar brackets cast integrally with the side frames as used heretofore are objectionable to a certain extent in that there'is a tendency for the metal to Shrink or crank around the juncture of the bracket and the frame; also the average tie'bar bracket adds from fifteen to'sixteen poundsto the side frame, while the pivotal connection which I have. provided adds only about three'or four pounds to the weight of the side frame.

It is my intention to cover all modifica tions of the invention falling within .the spirit and scope of the following claims.

I claim: f

1. In combination, a truck side frame having a journal box receiving flange With an elongated slot therein whereby a securing bolt may be passed therethrough at an inclined angle, a journal box receiving said bolt in an inclined position after which the bolt and box may be moved intonormal position, a tie bar connected to said box and having a threaded end, and a nut for engaging said threaded endfor securingthe tie bar to the side frame. I

2. In combination, a truck side frame having a tension member with a web, a journal box tie bar having a threaded portion extending through said web, and a nutfiengaging said threaded portion for securing the tie bar in place.

3. In combination, a truck side frame, a journal box tie barhaving a shouldered portion and a threaded portion adj acent thereto, and a nut engagingsaid threaded portion for securing the tie bar to the side frame, said shouldered portion and nut being on opposite sides of the portion towhich the tie bar is secured.

Signed at Chicago, Illinois, this 24th day 7

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