US433063A - Car-truck - Google Patents

Description

3 Sheets-Sheet 1.

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l J. C. BARBER.

CAR TRUCK.

No. 433,063. Patented July 29, 1890.

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GAR TRUCK. No. 433,063. Patented July 29, 1890.

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GAR TRUCK.

No. 433,063. Patented July 29, 1890.`

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UNTTED STATES PATENT OFFICE.

JOHN C. BARBER, OF ST. PAUL, MINNESOTA.v

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 433,063, dated July 29, 1890. Application filed .April 28, 1890. Serial No. 349,723. (No model- To all whom it may concern.-

Be itknown that I, JOHN C. BARBER, of St. Paul, in the county of Ramsey and State of Minnesota, have invented certain Improvements in Car-Trucks, of which the following is a specification.

This invention relates to imlinovemcnts in that class of car-trucks which employ rollerbearings for permitting a lateral motion of the bolster, and is an improvement on the trucks shown and described in my former patents, No. 370,758, granted October 4f, 1887, and No. 383,688, granted May 29, 1888. One of the objects of the present invention 1s to provide an improved form of bolster which shall be of simple and inexpensive construction.

' Another object is to provide an improved form of roller-bearing, so that the weight will be distributed over a large bearing-surface, thereby lessening the friction upon'the rolls.

Another object is to provide an improved arrangement of springs for supporting` the roller-bearing.

Other objects of the invention will appear from the following' detailed description, taken in connection with the accompanying draulngs, 1n which- Figure 1 is a plan view of my improved truck. Fig. 2 is a section on line a; as of Fig. 1, Fig. 3 is an end elevation. Fig. 4 is a section on line y i/ of Fig. 1. Figs. 5 and o' are details of the transoms and guide-bars. Fig. 7 1s a longitudinal section, and Fig. S is a transverse section, of a truck having wooden bolster and transoms. i

illy invention is here shown as applied to an iron-frame truck of a substantially similar pattern to that shown in my prior patent, NO. 383,688, but while the present invention 1s adapted to this style of truck it may be applied without change of principle to trucks having other forms of trames.

The side frames of the truck are composed of the arch-bars 1, inverted arch-bars 2, and

pedestal tie-bars 3, and are connected at their ends by journal-boxes i, which pass through and secure to the frames the j ournal-boxes 5, which carry the journal-bearings of the axles 6, upon which the wheels 7 are fixed. In these particulars the truck illust-rated herein is substantially the same as that shown and described in my former patent last hereinbefore mentioned.

The bolster consists of a channel-iron 8, that is arranged horizon tally with the depending iianges at the edges. At each end and arranged within the channel-iron is a casting i), that tits therein andis secured thereto by rivets 10. This casting is provided with the end portions 11, that extend above the end of the bolster, and the under surface of the casting is provided with the two curved recesses 13, extending transversely therein,which rest upon the roller-bearings, as hereinafter described. At the center of the bolster and secured to its under surface between the depending ilanges is the bolster-bracket 15. The bolster truss-rod 17 passes under this bracket, through a recess in the center of the casting 9, and through the opening in the end portion 11 ot the casting. The ends of the truss-rod 17 are screw-threaded, and are provided with suitable nuts 19 for tightening the truss-rod. It will be seen that this bolster is very simple in construction, while at the same time it possesses the necessary strength and rigidity for the purpose for which it is designed.

This bolster is provided with the usual center plate 21 and with the side-bearing and lateral-motion stop-castings 23, which are preferable arranged near the ends ofthe bolster in position to engage the arch-bar 1 when the bolster has moved to the point at which it is desired to limit its lateral moyement. Channel transom-bars 27 are arranged at each side of the bolster and extend across the truck-frame, their ends being riveted to the bolster guide-bars 29. (Shown in detail in Figs'. 5 and 6.) sist of a casting provided with recesses at the top and bottom adapted to t the arch-bars 1 and 2 of the frame. The iianges of the channel-bars fit within and against the iianges of the guide-bars 29, and by this means while the transoms thus serve as tie-beams or transverse braces for connect-ing t-he two side frames of the truck their flanges are protected by the guide-bars 25). The columnbolts 31 pass through the arch-bars 1 and 2, the guide-bars 20, and the pedestal tie-bar 3, thereby irmly securing the parts together. The guidebars 29 are provided with plane These guide-bars each coninner surfaces, and the end of the bolster and the castings 9 t`1t between these guide-bars and are free to moveV up and down in this space, as hereinafter described.

The spring-seats 33 are supported directly upon the lower arch-bar 2 of the frame, said seat being provided with a channel in its under surface fitting over said arch-bar, whereby the seat is secured in posit-ion. r1`his seat con- Sists of the casting having four preferably separate seats upon its upper surface, each of which is adapted to receive the lower end of a spring 35. The upper spring seat or cap 37 is likewise provided with four independent seats, and is arranged upon the tops of the bearings 35 and is secured to the lower spring-seat, preferably by the central-bolt 39. The guide-bars 29 are provided with vertical openings or recesses, and the spring-caps 37 are provided with the projections 41 that eX- tend into these openings in the guide-bars and are thereby guided in theirvertieal movement. The upper surface of each cap 37 is provided with the two curved recesses 43, these recesses being opposite the recesses in the bolster end or casting 9. Arranged between the bolster end and the cap are two rolls 45, which extend transversely of the bolster.

In some instances I prefer to employ a wooden bolster and Wooden transoms, as shown in Figs. 7 and 8. As shown in these figures, the bolster consists of a wooden beam 47, to the center of which the bolster-bracket l5 is secured. Metallic caps 49 are arranged on the ends of the bolster and the truss-rod 17 passes under the bracket, through the bolster and through the caps and is provided with the nuts 19 on its ends. The wooden transoms are secured to the sides lof the guidebars 29 by suitable bolts, and the column-bolts 31 pass through the transoms. The guide` bars 29 are the same as in the other instance, but the flange at the end ot' the transom is omitted and the transom extends beyond the guide-bar the full length of the bolster, as shown in Fig. 7. The bearings for the tops of the rolls are formed in a casting 5l that is secured to the under surface of the bolster. In other respects the construction is the same as that already described.

In both constructions the transoms are secured rigidly to the upright guidebars,which are rigidly connected to the side frames. The roll-bearings are supported upon the springs between the upright guide-bars and the double roll-bearin gs distributethe load equally upon the series of springs. The bolster of either form is capable of a lateral motion upon the roll-beari n gs, and the shape of the plates above and below the bearings, together with the rolls, tends to bring the bolster back to a central position after it has moved in either direction. As the springs yield, the bolster is capable of a vertical movement between the guide-bars.

I claim as my inventionm l. In a car-truck,the combination of a pair of side frames, independent vertical guidebars secured to said side frames, transoms secured to said guide-bars', a spring-seat supported upon each of said side t" rames between said guide-bars, a series of springs upon said spring-seats, a spring-cap resting upon said springs, a roller-bearing upon each of said caps, and a bolster having its ends resting upon said bearings and capable of vertical and lateralmovements between said guidebars, substantially as described.

2. In a ear-truck, the combination,with the side frames provided with vertici l guide-bars, of the spring-supported double roller-bearings arranged between said guide-bars, and the bolster having its ends arranged between said guide-bars and provided upon its under surface with curved recesses resting upon said roller-bearings, substantially as described.

3. In a car-truck, the combination,with the side frames provided with vertical guide-bars, of the spring-supported roller-bearings arranged between said guide-bars, the bolster resting upon said roller-bearings, and the truss-rod passing under said bolster and through its ends, substantially as described.

4;. In a car-truck, the eombination,with the side fram es having the upper and lower archbars, of the independent vertical guide-bars secured to said upper and lower arch-bars, the transoms secured to said guide-bars, the spring-supported rollerbearin gs arranged between said guide-bars, and the bolster havving its ends supported upon said bearings,

substantially as described.

5. In a car-truck, the combinationvrth the side frames, of the spring-caps, cach provided vwith two recesses in its upper surface, the series of springs supporting said cap at different points around its center, the two rollerbearings arranged upon said caps, and the bolster provided with recesses upon its under surface' and resting upon said roller-bearin gs, substantially as described. A

6. In a car-truck, the combination,with the side frames provided with springsupported roller-bearings, of the bolster formed of an inverted channel-iron, and castings secured to its ends provided with recesses resting upon said roller-bearings.

7. In a ear-truck, the combination,with the side frames provided with spring-supported roller-bearings, of the bolster formed of an inverted channel-iron, the end castings secured to said channel-iron and provided with recesses resting upon said roller-bearings, and the truss-rod passing under said bolster and secured to said end castings, substantially as described.

In testimony whereof I have hereunto set my hand this22d day of April, 1890.

JOHN o. BARBER.

In presence of A. C. PAUL, A. M. GAsKILL.

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