US1532792A - Cast side frame for car trucks - Google Patents

Description

H. H. WOLFE A ril a @225.

GAS T SIDE FRAME FOR CAR TRUCKS Filed Jan awed Apr. 7, 1925.

UNITED STATES 1,532,792 PATENT OFFICE.

HARRY H. WOLFE, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE STEEL CASTINGS COMPANY, OF COLUMBUS, OHIO. I

CAST SIDE FRAME FOR CARTRUCKS.

. Application filed January '2, 1923. Serial "No. 610,250.

To all whom it may concern.

Be 1t known that I, HARRY H. \VQLFE, a

citizen of the United States,and a residentof Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Cast Side Frames for Car Trucks; and I'do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to east side frames for car trucks and has special reference to the construction of the spring seat.

In the construction now generally employed, there is a curved joint between the top of 'the bottom tension member, which forms the seat, and'the side column, and there is a marked tendency for the metal to tear at the joint. Frames have failed in service on account of the strain, and the object of my invention is to provide a construction which will avoid the usual bend in the essential part of the member and eliminate, to a large degree, the tendency of shrinkage cracks to occur in the corner formed by the column and the bottom tension member. Such a construction is illustrated in the accon'ipanying drawings,'in which Figure 1 is a side elevation of one form of side frame embodying the invention;

Figure 2 is, a central vertical section;

Figure 3 is a detail longitudinal sectionon transverse .the line 33 of Fig. 2;

Figure 4 is a detail transverse section on the line 44 of Figure 1;

Figure 5 is a side elevation of another embodiment of the invention;

Figure 6 is a detail section-on the line 66 of'Figure 5. I

The side frame is cast in one integral structure and includes a compression memher 1, a bottom tension member 2, a diagonal tension member 3 extending between the bottom tension member and the end of the compression member, and a column 4 extending vertically between the bottom tension member and the compression member. In the construction heretofore employed, as above stated, the web of the side column is carried down to the member 2 and merges into the same at the point 5 through a curved jolnt which is inherently weak under the stress to which it is subjected when the spring seat is 'crosssectio-n.

loaded. Moreover, the web'of the diagonal tension member is located below and in spaced relation to the corner or point 5 and the top of the bottom tension member so that it fails to furnish a direct support to the partreceiving the strain. According to my invention, the web of the column is deflected outwardly, as at 6, so that a clear space is provided immediately above the bottom tension member 2. The deflected portion 6 is at rightangle to the tension member 3 so that it more effectually sustains and braces said member, and the tension member passes obliquely across the corner of the spring seat and defines a strut of inverted-arch form, as shown at 7, connected with-the tension mem ber orspring seat 2 by side webs 8. .At the junction of the seat 2 and the tension member 3, an opening 9 is formed through the web of the seat, by coring the mold in an obvious manner, thereby avoiding the formation of shrinkage cracks in the casting. An opening is provided in the web of the column at 10 for the same purpose. On the under side of the tension member 3 is a bracket 11 extending longitudinally of the member and adapted to carry a support for the journal box of. the truck. An opening 12 is formed through the bracket at its junction with the inverted arch or strut 7 to avoid the formation of shrinkage cracks.

In Figures 1 to 4, the bracket 11 is connected with the tension member and the strut 7 so as to present a box-like structure in cross-section. as shown most clearly in Figure 4, but this particular form is not essential, and in Figures 5 and 6 the bracket is shown as consisting of a web or plate 13 joined to the tension member by a central stem 1 presenting a structure I-shaped in Vhile the form shown in Figures l to 4 has greater strength to resist lateral stresses, the form shown in F iguresfi and 6 is simpler and easier to manufacture. I Having fully described my invention what I claim as new'and desire to secure by Letters-Patent, is

1. A east side frame for car trucks having a spring seat and a diagonal tension member united with the spring seat at the end thereof, the spring seat having an opening therethrough at its junction with the tension member.

2. A east side frame for car trucks comprising a spring seat, a diagonal tension member united with the spring seat at the end of the same, and a side column united at 1ts lower end with the tension memberat a point above the spring seat, there being lil openings through the seat andthrough the column at their respective junctions with the tension member.

3. A east side frame for car trucks comprising a spring seat, a diagonal tension member united with the spring seat at the end thereof and forming an inverted truss beneath the spring seat, a side column united at its lower-end with the tension member,

and a bracket extending longitudinally on the under side of the tension member and, united therewith and ada ted to sup ort a journal box, said bracket in'g unite with the inverted truss and extending outwardly therefrom in alinement therewith.

on the under side of the same and united therewith, there being openings through the webs of-the bracket, the column, and the spring seat at the junctions of the same with the-tension memberr I Intestimony whereof, I have signed this specification 1n the presence". of two subscribing witnesses.

" HARRY H. WOLFE.

Witnesses:

STERTZBACH, JOHN S MoPHERsoN.

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