US2258640A

US2258640A - Railway center plate structure

Info

Publication number: US2258640A
Application number: US241883A
Authority: US
Inventors: Edmund S Beckette
Original assignee: General Steel Castings Corp
Current assignee: General Steel Castings Corp
Priority date: 1938-11-23
Filing date: 1938-11-23
Publication date: 1941-10-14
Anticipated expiration: 1958-10-14

Description

Oct. 14, 1941. E. s. IBQECKETTE 2,258,640

RAILWAY CENTER PLATE STRUCTURE Filed NW; 25, 1938 2 Sheets-Sheet 1 74 u ::::%:I f 1 v 4 7 3 7 l6 /5 Z 42 FIG I k l R\ 3 k 1 1 FIG 4 INVENTOR EDMUND S BECKETTE BY 7 W ATTORNEY E. S. BECKETTE Filed Nov. 25, 1958 2 Sheets-Sheet 2 I45 44 All? 7% 45 FIG. 6.

62 7/4 LIZ 312m! INVENTOR EDMUND S BECKETTE ATTORNEY Patented Oct. 14, 194i RAILWAY CENTER PEATE STRUCTURE Edmund s. Beckette, East St. Louis, Ili., assignor to General Steel Castings Corporation, Granite City, Ill-., a corporation of Delaware Application November 23, 1938, Serial No. 241,883

(or. cos-1st) 6 Claims.

The invention relates to railway vehicle center plate structure through which the truck bolster supports the body bolster and swiveling move ment of the truck is accommodated.

One of the objects of the invention is to eliminate continuous metal to metal contact between the truck and body bolsters and thereby avoid noises and vibrations present in the usual center plate construction, particularly after the parts have worn. j

Another object of the invention is to eliminate wear in the centerplate parts and the rethe center plate structure to act as a free pivot- ;loint between the truck and body to accommodate and absorb relative horizontal and tilting movements of the bolsters as well as swiveling 1 movements.

Another object of the invention is to utilize the center plate structure to induce the return of the bolsters to normal position after they have been moved from the same.

Another object of the invention is to eliminate the necessity for lubrication between the truck and body center plate parts.

The above and other detailed objects, as will appear from the following description, are attained by the use of cooperating center plate members equipped with rubber pads and blocks and arranged to place the rubber elements under compression and shear whereby the rubber elements may function most effectively. Other additional elements may be included in the struc ture for specific purposes as described below.

In the accompanying drawings illustrating the invention:

Figure 1- is a vertical section through the center plate portions of a railway truck bolster and a body bolster associated therewith.

Figure 2 is a view looking upwardly at the body center plate member shown in Figure l, the truck ber t. All opposing faces of the two center plate casting members are spaced substantially from each other.

segments 'i' of similar material are secured to the side wall of cup Evin slightly spaced relation. The cup and the rubber elements constitute a unit which may be made, supplied and stored independently of the remaining structure.

Truck center plate member 3 is proportioned .and shaped to be inserted between segments l, and preferably the sides 3 of member .3 are tapered upwardly whereby the laterally opposing faces of the center plate members converge upwardly, and as the parts ar telescopingly assembled sides ll frictionally engage and grip the inner faces of segments l compressing the segments and also placing them under vertical shear and thereby partially supporting the body bolster, although the main load is transmitted through disc t.

Rotation of the body and truck bolsters about the axis X of the center pin (not shown) will be permitted by the rubber elements but will be yieldingly resisted by the torsional shear between member 3 and pad 6 and by the torsional shear forces of segments l'through the gripping action of the segments l against the wall 8. The rubmembers to their normal position.

Due to the substantial space between opposing elements of the two center plate casting membersthe latter may move horizontally relative to each other and may tilt vertically relative to each other. Such horizontal or tilting movement is yieldingly resisted by the rubber elements which completely fill the space between the center plate members and constantly tend to return the cennormal position.

Dowels ll riveted or otherwise attached to the bottom of cup 5 project into suitable holes provided therefor in the bottom iii of the body center plate member and securely hold the cup, and rubber elements mounted thereon, in assembly with the body center plate member. The body bolster bottom web is provided with openings A adjacent to dowels 9 to accommodate the insertion and manipulation of a hammer or other tool for driving the dowels out of the dowel holes when the cup and rubber unit is to be removed from the body bolster.

The construction avoids any contact between relatively movable metal parts thereby avoiding the necessity of accurately fitting said parts, and

her elements will tend to return the center plateter plate members, and the two bolsters, to their eliminating the possibility of wear between such parts and the resulting 16st motion with accompanying jolting and noise. Obviously there is no necessity for lubrication.

In Figure 3 the female member II of the center plate structure is integral with the truck bolster I2, and the male center plate member I3 is integral with the body bolster I4. Cup I5, to which rubber elements I6 and H are secured, opens upwardly and the side I8 of center plate member I3 tapers downwardly to compress rubber elements I! and place the same in vertical shear so that they contribute to the support of the truck bolster. Such tapering and compression also tends to create such tight gripping action between elements I! and I3 that the rubber elements will be placed in torsional shear as the center plates rotate relative to each other. Preferably the cup is held against rotation in member II by being welded thereto at W.

This construction includes the additional feature of an annular packing I9 of felt or similar material compressed between the upper edge of the truck center plate member and the opposing horizontal face of the body bolster. This packing prevents the admission of dirt, water, oil,

face of the bolster and retains packing I9 in place and also'serves as aprotector for the same and as a baffle against the passage of foreign matter to the interior of the center plate structure.

The structure illustrated in Figure 4 corresponds closely to that shown in Figure 3 but instead of a single unit mounting the rubber elements 2I and 22 the former is bonded to a plate disc 23 and the latter, are bonded to a plate ring 24 set into a recess'in truck center plate member 25. Disc 23 and ring 24'are held in place by welds W.

In each of the structures described above all of the rubber elements are attached to one of the center plate members,

Figure shows the flat disc 30 and the plate 3| to which it is bonded mounted on the body center plate 32, while the rubber segments 33 are secured to a ring 34 mounted on the truck center plate member 35. Welds W hold plate 3i and ring 34 against movement. Otherwise the construction and operation of the parts correspond to arrangement shown in Figure 1.

In Figure 6 the structure combines the features of Figures 4 and 5, the disc 40 and its plate 4I being mounted on the truck center plate member 42, as in Figure 4, but the rubber segments 43 and their mounting ring 44 are mounted on the body bolster center plate 45. W indicates suitable welds holding plate 4| and ring 44 against movement.

In Figure 7 the body center plate member 50 corresponds to that shown in Figures 1 and 5. Rubber disc 5| is vulcanized to a plate 52 seated in member 50 and held against movement by dowel pins 53. The truck center plate member 54 comprises a casting made separately from the truck bolster 55 and the rubber segments 56 are vulcanized directly to center plate member 54 eliminating the mounting ring.

In Figure 8 the truck center plate member 60 is integral with the truck bolster 6|, but none of the rubber elements are mounted on the truck center plate. The body center plate 62 is formed separately from bolster 63, Disc 84 is vulcanized to a plate 85, welded at W to center plate 62. Rubber segments 66 are vulcanized directly to the inner face of center plate flange 61.

Figure 9 illustrates a structure in which truck bolster Ill and body bolster II each has an individual separately formed center plate casting 12 and I3 respectively. Rubber disc 14 is vulcanized to the truck center plate and segments 15 are vulcanized to the body center plate and the use of plates or rings for mounting the rubber elements on the castings is eliminated. The packing seal I6 and its retainer H are mounted .on center plate member I3.

If it is desired to use the rubber structure to receive vertical forces only, or to receive lateral forces only, such selection may be readily made 1with any of the structures shown in Figures 4 No center pin is shown in the drawings but it will be understood that the ordinary center pin may be used and the play of the pin in the center plate holes will accommodate the relative movements of the body and truck center plates previously referred to. To provide a completely insulated center plate construction, it would be desirable to include an insulated center pin arrangement which has been previously used in some constructions.

The shock absorbing and noise insulating elements are described as being of rubber but it will be understood that other materials of rubber-like quality, such as are known at the present time or may be developed hereafter, may be substituted for rubber pads.

While a number of different forms of the invention are illustrated and des ribed, it is obvious that those skilled in the art may combine the features of the invention in arrangements other than the ones shown and with additional features without departing from the spirit of the invention and the exclusive use of all modifications coming within the scope of the claims is contemplated,

What is claimed is:

1. Railway vehicle center plate'structure comprising relatively rotatable members with opposing upright walls in telescoping relation axially and converging in one direction of their telescoping movement, and rubber elements compressed between said walls by such telescoping movement to place said elements in shear whereby they yieldingly resist relative rotative movement of said members.

2. A railway vehicle center plate structure comprising relatively rotatable members with opposing upright circular walls in telescoping re lation axially and converging in one direction of their telescoping movement, and rubber elements spaced from each other about the peripheries of said walls and compressed between said walls by such telescoping movement to place said elements in shear whereby they yieldingly resist relative rotative movement of said members.

3. Railway vehicle center plate structure comprising respective body bolster and truck bolster members rotatable relative to each other and having opposing fiat horizontal walls and opposing upright walls, rubber-like material compressed between said upright walls and placed in shear by relative rotative movement of said members whereby said material yieldingly resists said movement, and rubber-like material between said flat horizontal walls and compressed substantially uniformly by the application of the truck load. Y

4. A railway vehicle center plate structure comprising a truck center plate having a truck load receiving element with a wide flat bearing surface facing upwardly and having an upstanding element at the outer periphery of said load receiving element with an extended surface facing in a horizontal direction and substantially at right angles to said first-mentioned surface, a body center plate having a truck load transmitting element with a wide flat bearing surface facing downwardly and having a depending eleterial compressed between all of said surfaces to yieldingly support the body center plate and the load transmitted thereby and to yieldingly resist relative rotation of said truck and body center plates by the resistance of said rubber-like material to shear.

'5 In combination, a railway vehicle truck center plate and a body center plate mounted thereon, there being a readily renewable unitary structure detachably applied to one of said center plates and comprising a cup-like metal part and rubber-like material on the inner face of the side of said part, said part being non-rotatably secured to the center plate member to which it is applied and saidmaterial being disposed to frictionally engage the other center plate to yieldingly resist relative rotational movement of the center plates.

6. A railway truck and body center plate combination as described in claim 5 in which the rubber-like material forms an annulus of spaced apart blocks free to distort relative to each other.

EDMUND S. BECKE'ITE.