US734188A - Bolster. - Google Patents

Description

PATENTED JULY 21, 1903,

T. MITCHELL.

BOLSTER.

APPLICATION FILE-D JUNE 20. 1902.

2 SHEETS-SHEET 1.

NO MODEL,

WITNESSES:

1n: NORRIS PEfiRS CO" WASHINGTON. D c.

No. 734,188. PATENTEDJULY 21, 1903.

.- T. MITCHELL.

BOLSTER.

APPLICATION FILED mm: 20. 1902. no MODEL. V H 2 S EETS-5211mm.

E N (D -1 WITN ESS ES:

No. 734,199. I,

UNITED STATES Patented July 21, 1903.

PATENT OFFICE.

THOMAS MITcHnLL, OF CHESTER, PENNSYLVANIA, ASSIGNOR To DANIEL' EAGA'N, or PHILADELPHIA, PENNSYLVANIA.

BOLSTER.

SI EGIFIGA'IION forming part of Letters Patent No, 734,188, dated July 21, 1903.

Application filed Tune 20, 1902.

To all whom it may concern: I

Be it known that I, THOMAS MITCHELL, a citizen of the United States, residing at Chester, in the county of Delaware and State of Pennsylvania, have invented certain new and usefulImprovements in Bolsters, of which the following is a specification.

It is the object of my invention to provide a bolster of a form which may be advantageously cast as a complete integral structure, and so arranged or conformed that although involving the use of a relatively small weight of metal, in its construction, it will' possess great strain resisting capacity.

My improved construction is I features applicable in connection with eithe truck or'body'bolsters. n y In the drawings, Figure 1 is a top plan,--Figure 2 a view in side elevation,'Figure 3 a View in under plan,-and, Figure 4. a view in end elevation,-of a truck bolster embodying my invention.

Figure5 is a transverse central sectional elevation of the same.

- Figure 6 is a view in top plan,+-Figure 7 a view in side elevation,- Figure 8 a view in under plan,-=and, Figure 9 a view in end-elevati0n,--'0f a bodybolster embodying my improvements. v a a Figure 10 is a fragmentary view, illustrat ing the end portion of the body bolster, as it may, if desired, be conformed, to the more conveniently receive and support the side sill of the car body.

7 Similar letters of reference indicate corresponding parts.

Referring, first, to'Figures 1, 2, 3, 4, and 5, which exhibit the construction of a truck bolster,-a is the top plate provided with the center bearing 1), and the side bearings c. Said top plate a may beat any desired conformation, but is preferably slightly wider at the center than at its ends.

'The end portions of the bolster are, in transverse section four sided, or as I term it, of box form, and the sides of said box like portions or boxes are provided with the usual column guide ribs e.

The bottoms of said box like portions are designated (1. ware openings formed in the n itsgeneral Serial No. 112,422. (No model.)

ends of the top plate to lighten the structure.

Between the box like end portions are anrangeda pair of inclined side walls; f, the upper edges of which areintegrallyunited with the top plate, and the respective ends of which.

unite with or merge into the side walls (1' of the boxlike ends.

The lines of junction of said inclined side walls with the top plate are well in from the respective edges of said plate,-and the end portions of said inclined side wallsf curve outwardly quite sharply to unite as stated with the vertical side walls (1 of the box like end portions.

l he inclined arrangement of said side walls f is shown more particularly in-Figures 4 and 5, and as therein depicted the upper edges of said walls are closer together than are their lower edges, said walls being arranged in ap- 7o proximately A-shaped relation.

Preferably the upper edges of the walls f are spaced apart a distance equal to the external diameter of the king bolt sleeve h are transversely extending webs or brackets 7 arranged between the king bolt sleeve 9 and the side walls f and 'i are webs or brackets arrangedjbetween the outer faces of the walls f and the under faces of the projecting'edges of the top plate, said webs or brackets h 11 80, being, to secure the best results in bracing and tying together the members of the bolster, arranged in a common transverse plane.

As willbe' understood, the arrangement of said inclined walls f shown, is such as will very firmly brace the diolster against the strain which it receives in use, and the webs or brackets h i very firmly brace or support the central portions of the structure against the special strains to which that portion of go the bolster is subjected. v

w are webs, arranged at either sideof the center of the structure, and extending-across from the lower edge of one wall f to the lower edge of the other. The webs w serve to very 5 firmly brace the said walls.

In Figures 6, 7, 8, and 9,-1 depict a body bolster embodying certain general features of my invention already described with reference to the truck bolster. Said body bol- ICL ster is designated j, its top plate is, and its inclined side walls m. The side walls at,

throughout thecentral body of the bolster, bear the same relation to the top plate It as do the side walls fto the top plate a in the structure shown in Figures 1, 2, 3, 4, and 5. The arrangement of the body bolster shown, however, differs from that of the truck bolster shown, in that its side walls on continue in their inclined relationship to the end of the bolster,said body'bolster not having the box like end portions with vertical sides shown as forming part of the truck bolster. The center bearing of the body bolster is designated n, and the side bearings o.'

The transversely extending webs of the body bolster arranged between the external faces of the walls m and the edges of the top plate k are designated 10 and the webs or brackets, in the same transverse plane, arranged between the king bolt sleeve q and the side walls, are designated'r.

s are webs of small height extending from the lower portions of one'wall m to the other, at points above'the side bearings, and making connection with said side bearings,as shown in Figure 9, said webs sv extend less than half the vertical distance from the side bearings to the top plate.

t are webs or brackets ar ranged between the external faces of the side walls m and the edges of the top plate, in the same transverse plane as the webs s.,

As shown in Figure 10, the end of the body bolster may be given an angular or shouldered form to the more conveniently receive and sustain a side sill.

The top plates of the truck and body bolsters are preferably provided with slight depending fianges or thickened regions, u, extending along their respective edges.-

The truck and body bolsters herein shown and described may each be formed in a single casting operation as a complete integral structure. p I am not the inventor of the broad idea of extending the side plates or tension members of the bolster from the top plate or compression member in diverging lines, and therefore disclaim the same.

described my invention, -I

2. A metal bolster comprising a top plate,

anda pair of depending side walls arranged in approximately A-shaped relation, the upper edges of which 'walls unite with said top.

plate at a considerable distance inwardly from the respective edges of said top plate.

A metal bolster comprising a top plate, and a pair of'dependdng side walls 'arranged in approximately A-shaped relation, a king bolt sleeve, and webs and brackets connect- Y ive of said king bolt sleeve and said side walls. l

' 4. A metal bolster comprising a top plate, and a pair of depending side walls arranged in approximately A-shaped relation, the central portion of which top plate has flanges or edges which extendontward beyond the upper portions of the side walls, and a pair of webs which respectively connect the respective edges of the top plate to the respective side walls.

5. In a metal bolster, in combination, a top plate, a pair of depending side walls arranged in approximately A-shaped relation, the central portion of the top plate having flanges which extend beyond the upper portions of the respective side walls, a king bolt sleeve,

a pair of webs which respectively connect.

each an edge of the top plate to one of the side walls, and a pair of webs which respectively connect said king bolt sleeve to the respective side walls.

6. A bolster embodying a top plate, depending inclined side plates arranged intermediate of their length in approximately A- shaped relation, and depending vertical side walls at its end portions, said inclined walls merging into said vertical walls. 4

. 7. A bolster having a top plate, depending inclined side walls arranged in approkimately A-shaped relation, and box .like portions at its respective ends, said inclined sidewalls merging into the side walls of the boxes, said inclined walls curving sharply away from each other close to their points of junction with said side walls of the boxes, and arranged with their bodies in approximate parallelism.

8. In a bolster, in combination, a top plate, box-like structures at the respective ends of the plate, depending inclined side walls intermediate of said box-like structures, and arranged in approximately A-shape'd relation, the upper edges of which inclined side walls ;are set inward from the respective edges of the to plate, and which inclined walls merge into t 9 side walls of the box-like structures, a king bolt sleeve, a pailof webs or brackets eachof which connects one of the respective inclined walls with the king bolt sleeve, and another pair of webs or brackets each of which connects one of the inclined side walls with the adjacent overhanging dge of the top plate, substantially as set forth. 4

9. A bolster having a top plate, depending in'clined side walls arrangedin A-shaped relation, box like 'ends into the side walls of which said inclined side walls merge, and a pair of webs connective of the lower edges of the two inclined side walls.

10. In atruck bolster, in combimitionya top plate, depending side walls at the respective ends of the plate, arranged at the respective edges of the'plate, depending side walls, in termediate of the first mentioned side walls outwardly inclined from their upper to their mentioned side walls are set'inward from the I respective edges of the top plate, and which last mentioned walls merge in to the first mentioned side walls, a king bolt sleeve, and a pair of webs or brackets arranged at the iongitudinal center of the bolster, and each' arranged to connect one of the side walls with the adjacent overhanging edge of the top plate. I I 11. A bolster consisting of a compression member, tension members diverging from said compression member, and heads at the ends of said bolster, substantially as set forth. 12. A bolster consisting of a compression member, tension members diverging from said compression member, heads at the ends of said bolster, side bearings surmounting the bolster, and a center bearing located at the longitudinal center of said compression mem ber, substantially as setforth.

13. A bolster-consisting of a'compression member, tension members diverging. from said compression member, heads at the ends of the bolster, and column guides carried by said heads, substantially as set forth.

In testimony that I claim the foregoing as my invention I have hereunto signed my name this 12th day of June, A. D. 1902.

THOMAS MITCHELL.

S. SALOME BROOKE.

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