US703609A - Car-bolster. - Google Patents

Description

No. 703,609. Patented July I, |9o2 a. P. BITTER.

CAR BOLSTER.

(Application filed. Apr. 24, 190B.)

4 Sheets-Sheet I (In Model.)

THE scams mans c0. PHOTD-LlTNO-. WASHINGTON. I:v c.

Patented .Iuly l, I902.

a. P. BITTER. CAR BOLSTER.

(Applicatim: filed Apr. 24, 190B.)

4 Sheets-Sheet 2.

(N0 llodel.)

1;? we for ac/76765556, %'QW Patented July I, m2.

6. P. nmsn. CAR BOLSTEB.

(Lppliclfion Mod Lpr. 94, 1909'.)

4 Shoots-Shoot 3 (Nu Nodal.)

UNITED STATEs GILBERT P. BITTER, on CHICAGO, ILLINOIS.

CAR-'BQLS'TER'.

SPECIFICATION forminglpart of Iletters retentive.- roaeoe, dated July 1,1902.

Application filed April 24,1902.

To all whom it may concern."

Be it known that I, GILBER R BIT ER, a citizen of the United States, residing at Ohicago, in the county sf Cook, State of Illinois, have invented certain new and useful Improvements in Oar-Bolsters; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings,in which Figure 1 is a side elevation of a car-bolster embodying my invention. Fig. 2 is an" un der side plan view of the same. Fig.3 is an enlarged side elevation of the end cap for receiving the ends of the compression and ten-" sion members and the spanners of the bolster. Fig. 4: is a longitudinal vertical section of the end cap on the line 4 4, Fig. 6, showing one of the sockets for the end ofia compression member of the bolster and one of the seats or sockets for the spanners. =Fig1'5is a similar section on the line 5 5, Fig. 6, showing the opening for the passage of one of the tension-rods or tension members of the bolster. Fig. 6 is an under side plan view of the end cap of the bolster.

Fig. 7 is an outer end view of "the end cap looking in the direction of the arrow7, Fig. 3.

Fig. 8 is-an vinner end view of the end caplooking in the'direction of the arrow 8, Fig. 3. Fig. 9 is a transverse vertical sectionaliview of the center castingor'strut of the bolster,

the center plate omitted." T Fig. 10 is'a' transverse sectional view of the end plate for closing the nut-channel ornut-recess in the outer end of the end cap. Fig. 11 is a view in elevation of the side bearing of the bolster.

Like symbols refer to like parts wherever they occur. I

My invention relatesto the constructionof that class of composite metallic car-bolsters termed trussed bolsters, wherein'are combined a tension'member or members, a'coin' pression member or members, and an interposed striit,"arid has for itsjobject the provision of means whereby the load of the carbody and -the torsional strains gare properly distributed and'transferred to' the strut and to the ends of the bolster.

Where trussed structures are used as truckbolsters, the tension members of the structure are dependent, and the support of the bolster being at the ends where the tension Serial No. 104,516. on model.)

and compression members unite the strains andjload are uniformly distributed throughout the bolster and no material difliculty is experienced in adapting the structure to its position and work; but in the case of bodybolsters,where the structure is reversedthat is, the tension members are uppermost-considerable difficulty is experienced in applying the bolster to the car-body so as to properly distribute the load and strains upon the bolster and prevent sagging of the bolster and car-body. To overcome these difficulties and objections, I have combined with they strut and endsections of a'trussed bolster interpose'dspanners for the support of the carsills, whereby the tension members of the bolster are relieved of the direct load, which is thereby divided up between the strut or post and the compression members of the structureyand such a construction embodies the main feature of my invention.

A secondary feature of my invention consists in providingthe end caps of the bolster structure with inward extensions and combining therewith the spanners and side bearings of the bolster, whereby the tension members are left free and the bolster is crossbraced and stitl'ened against torsional or transverse strains.

There are other--minorfeatures of invention, all as will hereinafter more fully appear. 1

I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same.

In the drawings, A1 indicates the strut or post, B B the end caps, Dthe compression members, and E the tension members, of a. trussed bolster, which several elements may be of'any desired character and with which in practicing my invention are combined spanners S S, interposed} between endcaps B B and the strut A,so as to act as girders when the sills of the car-body. rest thereon.

Preferably the compression members 1) D and the spanners S S are 'of'tubular form and may be rectangular in cross-section; but said compression members may be of any other character desired-as, for instance, T-ironand the spanners may be plate or T iron, if

preferred, and, further, the tension and compression members may be in the same vertical planes, though preferably they are in parallel planes or alternating, as indicated in the drawings.

For the purposes of illustration the compression members D and spanner members S are herein shown as tubular, the tension members E and compression members D as alternating, while the spanner members S are in the same vertical planes as the compression members D and alternate with the tension members E.

The strut A (see Fig. 9) is or may be a suitable casting provided above or on its upper face with a series of grooves l 1 1 for the passage of the tension-rods or tension members E, between which are deeper recesses or grooves 2 2 for the passage of the spanners S S, and on its undersurface and alternating with the tension-rod grooves 1 1 compressionmember grooves 3 3 3, and said strut or post is also provided with the centrally-disposed king-bolt hole 4.

The counterpart of the compression-member grooves 3 3 3 of the strut A are formed on the inner or upper face of the center plate 0, (see Figs. 1 and 2,) which latter is riveted or bolted to the strut A when the bolster is assembled.

The end caps B, which are preferably malleableized castings, are formed with an inwardly-projecting extension 5 on their upper surface, which may be extended sufficiently to form points of attachment for the side bearing F, (see Figs. 1 and 11,) and are provided with a plurality of sockets 6 6 for the reception of the ends of the compression members D above the same and centrally disposed a plurality of seats or sockets 7 7 for the reception of the ends of the spanners S S and intermediate of the sockets 6 passages 8 8 for the tension-rods or tension members E.

The outer end of the end cap B is formed with a chamber or recess 9 for the nuts 0 of the tension members and is closed when the parts are assembled by means of a cap-plate 10, which may be riveted, bolted, or otherwise secured to the end cap B to conceal the nuts and prevent accidental displacement thereof.

The end caps 13 and strut or post A being of the general character hereinbefore specified may be cored and flanged in any desired manner, as is well understood in the art, to secure the greatest strength for the least weight.

F indicates a side bearing, which may be of any desired character, provided its general form is of a character to straddle the compression members-as, for instance, provided with the offsets or pillars 11 and recesses 12and which may be secured by bolting or otherwise to the extension 5 of the end cap B.

The elemental construction of the bolster being substantially as hereinbefore pointed out, the parts may be assembled as follows: Theeompression members D D, tension members E E, spanners S S, strut or post A, and the end caps B B having been assembled so that the spanners S S are above and in line with the compression members D D and intermediate of the tension members E E, (see Figs. 1 and 2,) the center plate 0 is riveted or bolted to the strut A, so as to confine the compression members D D, and the nuts e on the ends of the tension members are tightened to the desired degree, (to camber the compression members D D, if desired,) after which the cap-plates F are applied and riveted or bolted to the end caps B to close the same and complete the bolster.

Among the advantages incident to bodybolsters as herein described are, first, that the tension members are relieved from the direct load and are free to perform their regular functions in a trussed structure; second, that the load being directly on the spanners is substantially divided between the strut or post and the end caps, the latter being the normal load-points for trussed structures; third, the extreme outer sills are balanced around the point of intersection of the center lines of the tension and compression members of the bolster, thus avoiding bending strains due to the overhang of the side sills, and, fourth, the extension of the end caps and combining therewith of the side bear ings stitfens the bolster against cross-bend ing or torsional strains.

For purposes of illustration and as the preferred construction the spanners S S have been shown as continuous between the end caps 13 B and as passing over and resting upon the strut or post A, in effect a continuous girder; but, if desired, the spanners may be half-length and socketed into both the strut A and the end cap B with like results.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. Atrussed car-bolster,provided with spanners for the support of the car-sills, substantially as and for the purposes specified.

2. A trussed car-b01ster,provided with spanners for the support of the car-sills, said spanners interposed between the tension members, substantially as and for the purposes specified.

3. Atrussed car-bolster,provided with spanners interposed between the tension members and in alinement with the compression members of the bolster, substantially as and for the purposes specified.

4. A trussed car-bolster, comprising in combination, a strut, tension and compression members, spanners, and end caps, the end caps having vertically-aliued sockets for the compression members and spanners, substantially as and for the purposes specified.

5. A trussed car-bolster, comprising in combination, a strut, tension and compression members, spanners, end caps, and side bearings, the end caps having inward extensions for the reception of the side bearings, and the side bearings arranged to straddle the comcap, substantially as and for the purposes pression members, substantially as and for specified.

the purposes specified. In testimony whereof I affix my signature,

6. Inatrussedbolster, the combination with in presence of two witnesses, this 23d day of 5 the tension and compression members there- April, 1902.

of, of an end cap having an inward extension, 1

a spanner which engages the inwardexte'np GILBER1 BITTER sion of the end cap, and a side bearing which Witnesses:

straddles the compression members and is D. E. WILSON,

10 secured to the inward extension of the end HUGH M. STERLING.

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