US2399209A - Car construction - Google Patents

Description

April 3@, 1946. e. E. DATH U 2,399,2Q9

CAR CONSTRUCTION Filed June 7, 1944 Patented Apr. 30, 1946 George E. Bath, Mokena, 111;, assignoi fto W. H. Miner, Inc., Chicago, 111., a corporation of Delaware Application June 7, 1944, Serial No. 539,046

7 Claims.

This invention. relates to improvements in car construction, and more particularly to the center pin connection forrailway car trucks.

One object of the invention is to provide an improved center pin construction for railway cars having the usual body and truck bolsters connected by a headed center pin, the heads of which shoulder against the bolsters to connect the bolsters for swiveling movement and lock the same against vertical separation, wherein the pin. is divided lengthwise into sections and is thus contractible to permit the heads of the sections thereof to be passed through the center pin receiving openings in applying the pin to the'bolsters'.

Another object of the invention is to provide a sectional center pin of, the character indicated, wherein the sections of the pin are provided with interfittable portions of tongue and groove'formations to permit construction of the pin, the tongues of said interfitting formations serving to hold the sections spread apart to maintain the pin expanded and the heads thereof in shouldered engagement with the bolsters.

A more specific object of the invention is to provide a center pin for railway car trucks comprising two elongated sections or parts extending through the center pin receiving openings of the: bolsters, each section or part being headed at the opposite ends to shoulder against said bolsters. at the openings thereof, wherein the sections are provided with spaced abutting lugs on their inner sides for holding the same spread apart, and wherein the pin is collapsible to pass through said center pin receiving openings by engaging the lugs of either of said sections or parts between the lugs of the other section or part.

Other objects of the invention. will more clearly appear from the description and claims hereinafter following.

In the drawing forming a part of this specification, Figure I is a vertical sectional view, taken lengthwise of the car, throughv the mid portions of. the body and truck bolsters of the underframe structure, illustrating my improvements in connection therewith, the center pin being shown in elevation. Figure 2 is a view, similar to Figure 1, illustrating the manner of application of the pin to the bolsters of the railway car. Figure 3 is a top plan view of Figure 1'. Figure 4 is a bottom plan view of Figure I, looking upwardly in said figure. Figure 5 is. atransverse, horizontal sectional view, corresponding substantially to the line" 55 of'Figure 1. Figure 6' is'a side elevational View of the center pin only, illustrating another embodiment of the invention.

In' said drawing, I 0 indicates the body bolster of the car and -II the truck bolster. The body bolster is of the cast type and has diaphragm sections l2--|2, topand bottom walls I3 and I4, and a centersection [5 to accommodate the center pin. The'section I5 is of cylindrical, tubular form, as shown, and has an annular, inwardly projecting flange it" between the top and bottom ends, thereby providing an annular shoulder IT. The opening l8 defined by this flange is circular in form and of slightly greater diameter than the shank of the center pin.

'The truck' bolster- H, which is also preferably a casting, has top and bottom walls 20 and 2|,

connecting side webs 22-22, and spaced, vertical- Walls 23-43. The spaced walls 2 3-23 define a pocket 24 therebetween, which serves to accommodate the-bottom head of the center pin connecting the bolsters. The topwall of the truck bolster is provided with an upstanding, hollow boss inthe form 'of an annular flange 25, which projects into and is accommodated within the lower end of the tubular center section I5 of the body bolster Hi. The opening 26 defined by the flange 25 is in axial alignment with, and corresponds in diameter to, the opening I8 provided by the flange: it of the tubular section 55 of the bolster [0. The usual bearing plate or shim 21 is interposed between the body and truck bolsters.

Referring first tothe embodiment of the invention illustrated inv Figures 1 to 5 inclusive, my improved center pin construction comprises broadly twoelongated sections or members A and B, which are headed, at opposite ends. The members .A andB are of the same design, except as hereinafter pointed out.

Each member A and B is of substantially semi-cylindrical cross section and is provided at thetop thereof with an eccentric, substantially semi-cylindrical, outstanding flange 28, and with a concentric, substantially semi-cylindrical, outstanding flange 29" at the bottom end thereof. As will b evident, the flanges 28 and 29 form top and bottom head members of the members A and B, which head members are at opposite ends of the shank portions of the same. On the inner side, each member A and B presents a plurality of horizontally disposed ribs or lugs 30-30, which are in the form of tongues. The rib or lugs 30'30 are alternated with grooves or seats '3l3|. The inner vertical faces 32 of the-lugs 30 are substantially flat, and in the as-'- bers A and B hold these members spread apart with the heads or flanges 28-28 overlapping the e annular shoulder l'l provided by the flange l6 of the bod bolster l0 and the flanges 29-29 cooperating with the shoulder presented by the top wall of the pocket 24 of the truck bolster H to restrict upward movement of the pin.

The grooves or seats 3l-3l of each member A and B of the pin are of such a size and depth that they freely accommodate the lugs or tongues 30-30 of the other member therewithin, thereby permitting collapse of the pin, as illustrated in FigureZ. l

The eccentric flanges 28-28 at the top ends of the members A and B are of such a size and outside contour that they will pass freely through the pin receiving openings of both the body and truck bolsters, when the pin is in contracted condition, that is, when the lugs or ribs 30-30 of each member are completely seated within the openings 3I-3l of the other member, after one of said members has been displaced lengthwise with respect to the other to an extent to stagger said lugs :or ribs so that they are horizontally aligned with-respect to the recesses 3l-3l.

In applyingthe center pin to the car, the same is first collapsed by engaging the lugsof one member between the lugs of the other member,

as illustrated in Figure 2. The collapsed pin is flanges 28 thereof into overhanging relation tothe shoulder I1, and the member A is permitted to drop to the position shown in Figure 1 with the head 28 thereof engaged with the shoulder II. :As will be evident, the pin is maintained in,

its spread condition by the interengaging, abut- -ting lugs 30-30 thereof; which form, in efiect,

filler members integral with the members A and B, With the heads 28-28, at the upper ends of the members-A and'B; resting on the shoulder I! of the body bolster, the pin will be maintained in the spread condition shown in Figural, looking the bolsters together, The weight of each member of the pin will effectively prevent the same from workingupwardly to a position with respect to the other member thereof, wherein the lugs of these members could slipby each other.

In removing the center pin from the bolsters,-

the operation is substantially the reverse of that described, the member A being pushed upwardly until thelugs 30-30 thereof are in transverse alignment with therseats 3l-3l of the member B and the pin is then collapsed by laterally contracting the same, and withdrawn from the bolsters,

Referring next tothe embodiment of the, in-

vention illustrated in Figure 6, the construction,

is identical with that shown in Figures 1 to hinclusive, with the exception that each member of the pin is provided with only two spacer or filler lugs or ribs, one at each end of the same, insteadof a series of lugs or ribs arranged lengthwise of each member.

The improved center pin illustrated in Figure 6 comprises two like members, which are indicated by C and D. Each member C and D has a laterally disposed lug or rib I30 at each end thereof projecting from the inner side of said member and abutting the corresponding-lug or rib of the other member. The lugs or ribs [30-l 30 are identical with the lugs or ribs 30-30 hereinbefore described and function in a similar manner. Each member C and D is headed at opposite ends, said heads being indicated by I28 and I29, respectively, and being identical with the heads 28 and 29 of the members A and B hereinbefore described in connection with Figures 1 to 5 inclusive.

Although the improved center pins illustrated in Figures 1 to 5 inclusive and Figure 6 have been will have the flanges 129-120. at the top and,

the flanges [28-128 at the bottom,

As will be evident from the preceding description taken in connection with the drawing, in my improved design of center pin construction, advantage is taken of the usual play or clearance provided between the heads of the pin and the shoulders of the bolsters to permit relative longitudinal displacement of the members ofthe sectional pin in assembling the same with the bolsters.

I have herein shown and described what I now consider the preferred manner of carrying out my invention but the same is merely illustrative and.

I contemplate all changes and modifications that come within the scope of the claims appended hereto,

1 claim: 7 l 1. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a sectional, collapsible center pin insertable in said openings in collapsed condition, said pin comprising a plurality of members extending through saidopenings and having heads at opposite ends, 'an'd laterally inwardlyrprojecting spreading lugs on each of said members, said lugs having fiat vertical inner end faces, said lugs being in abutment with each other on said flat faces to hold said members spread apart, said pin being insertable as a unit through said openings when in collapsed condition with the lugs thereof inwardly overlapped and staggered lengthwise.

2. In car construction, the combination with body and truck bolsters having aligned centerj pin receiving openings; of a sectional contractible, center pininsertable in said openings in contracted condition, said pin comprising a plurality of elongated members extending through said openings and having heads at opposite ends, each member having laterally inwardly projecting spreading lugs arranged in series lengthwise of said member with seats between said lugs, said lugs having flat vertical inner end faces, said lugs. holding said members spread apart when brought into transverse alignment in abutting relationltol maintain shouldered engagement between the heads of said members and the bolsters, and said pin being contracted for insertion as a unit in said bolster openings by seating of the lugs of each section in the seats of the other section.

3. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a two part sectional center pin for locking said bolsters together, each part comprising an elongated member headed at opposite ends, each of said members having laterally inwardly projecting spreading lugs at opposite ends, said lugs having flat vertical inner end faces, said lugs being in horizontal alignment and in lateral abutment with each other on said flat faces to hold said pin expanded, said pin being contractible for insertion of the parts thereof as a unit within said openings, by laterally overlapping said lugs.

4. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a two part sectional center pin for locking said bolsters together, each part comprising an elongated member headed at opposite ends, each member having laterally projecting lugs on the inner side thereof alternated with seats adapted to receive the lugs of the other member, said lugs having vertically extending flat inner end faces, the lugs of said members being in end to end abutment on said flat faces for holding said members spread apart to dispose the heads thereof in shouldered engagement with the bolsters and lock the bolsters together, said pin being contracted for application and removal through the bolster openings by seating said lugs of each member in the seats of the other member.

5. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a two part sectional center pin insertable in said openings, each part comprising an elongated member headed at opposite ends, the inner sides presenting vertically extending flat faces, said inner sides of said memhere being in abutment with each other to hold said pin expanded, said inner sides of said members being notched to provide alternate offsets and depressions arranged to interfit to eirect contraction of said pin to permit insertion through the center pin receiving openings in applying the pin to the bolsters.

6. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a two part sectional center pin insertable in said openings, said pin being headed at opposite ends, said pin being split lengthwise into two members; interfitting lugs and notches on said members respectively, permitting collapse of said pin when interfitted to allow insertion of said pin as a unit in said center pin receiving openings, said lugs of said two members having fiat, vertically extending, inner end faces, said lugs holding said members spread apart when brought into abutment with each other, thereby maintaining the heads of said members in shouldered engagement with the bolsters.

'7. In car construction, the combination with body and truck bolsters having aligned center pin receiving openings; of a two part sectional center pin engaged in said openings for locking the bolsters together, said pin being headed at opposite ends, said pin being split lengthwise into two members, each of said members having laterally inwardly projecting, horizontally disposed, vertically spaced tongues, alternated with grooves adapted to accommodate the tongues of the other member to permit contraction of said pin, said tongues of said two members having fiat, vertically extending, inner end faces, said tongues being in horizontal transverse alignment and in abutting relation on said fiat faces to hold said members spread apart when the parts of the head portions at each end of the pin are in horizontal transverse alignment.

GEORGE E. DATH.

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