US434336A - Bolster-guide plate for car-trucks - Google Patents

Description

2 sheets-sheet f1.

(No Model.)

E. W. GRIBVES, BOLSTER GUIDE PLATE POB. GAR TRUGKs No. 434,336.

Patented Aug. 12, 1890.

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2 Sheets-Sheet 2.

(No Modl.)

E. W. GRIEVES, BOLSTER GUIDE PLATE F03 GAR TRUCKS.

No. 434,336. Patented Aug. 12, 1390.

WIE/neus e 6 UNITED STATESPATIENT OFFICE.

EDWARD WV. GRIEVES, OF BALTIMORE, MARYLAND.

BOLSTER-GUIDE PLATE FOR CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent N'O. 434,336, dated.r August 12, 189,0. I 4Application filed October 28, 1889. Serial No. 328,401. (No model.) Y

To @ZZ whom it may con/cem:

Be it known that I, EDWARD W. GRIEVESL bar plate of a railway-car truck that whilel possessing the necessary strength they will be much lighter than the corresponding parts as now constructed. This object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in Which- Figure 1 is a sectional view, partly in elevation, of suiiicient of a car-truck to illustrate my invention. Fig. 2 is an enlarged sectional plan View on the line 1 2, Fig. l. Figs. Sand 4 are detached perspective views of the main elements of my improved bolster-guide bar, and Fig. 5 is a perspective View of the im` proved bolster-guide-bar plate.

In Fig. l, A represents the spring-plank; B, the bolster; and D, D and D2 the various bars connecting the axle-boxes E of the truck and constituting what is ordinarily known as the diamond frame of the truck.

The bolster is mounted upon springs supported upon the spring-plank, as usual, and at each end of the spring-plank and bolster, in front and rear of the same, is a bolster-guide bar F, which extends from the lower bar D of the diamond frame to the upper bar D2 of the same, the bolster havingboth at front and rear a plate G, with ribs oriianges overlapping the bar F, so that the bolsteris properly guided in its vertical movements as the springs are contracted and permitted to expand.

Usually the bolster-guide bar and the guideplate are made of cast-iron, and must necessarily be exceedingly heavy in order to Withstand the strains to which they are subjected.

In carrying out my invention I materially decrease the weight of the bolster-guide bar and plate without any sacrifice of strength of the same; in fact, there may in many cases be a material increase in the strength of each of these parts. For this purpose both the guidebar and the guide-bar plate are composed of sheet metal struck up into proper form. Thus, as shown in Figs. 2, 3, and 4, the guide-bar consists of inner and outer plates a and b, each corrugated in its central portion, the corrugation of the outer plate `b being somewhat deeper than that of the inner plate a, so as to provide between the two plates a central vertical chamber for the reception of the stem of the bolt H, whereby the guide-bar is secured to the upper and lower bars of the diamond frame. Each of the plates also has at its lower end lateral ly-eXtendin g Wings cl, provided with openingsefor the reception of bolts, whereby they are secured to the spring-plank A. Each of the plates also has at the edge a projecting iangef, that of the inner plate overlapping the Iiange of the outer plate, as shown in Fig. 2, and the two ianges being, if desired, riveted or otherwise secured together, so as to render the bar perfectly rigid and prevent any accidental springing or separation of the ,plates composing the bar. The inner plate has at top and bottom a projecting flange g, these flanges forming bearings for the top and bottom bars of the diamond frame, and being provided at their opposite edges with ribs t' for engaging with said bars and aiding in the maintenance of the guide-bar in proper position in respect to the frame. The ianges g bear upon and are braced and stiifened by the outer plate b, the corrugation of which extends almost to the outer edges of the flanges. The inner plate a may, if desired, be furnished with a lateral extension a', provided at its upper end with projecting ears m for the reception of a portion of the brakegear; but this extension is immaterial and may be omitted in many cases.

The guide-bar plate G has hollow cars or projections n, formedby striking up the plate in suitable dies, these ears or projections ovenlapping the flanged edges of the guide-bar and servin g to insure the proper vertical movement of the bolster. Laterally beyond the ears n n the guide-bar plate is provided with wings p, which `are bolted to the bolster, and in order to aid these bolts in retaining the guide-bar plate in proper longitudinal position on the bolster that portion of the plate IOO between the ears n is sunken in respect to the winds p, so that it enters a recess formed in the side of the bolster, as shown in Fig. 2, the opposite shoulders thereby formed serving to prevent movement of the guide-bar plate on the bolster in either direction.

Although in carrying out my invention I prefer in constructing the bolster-guide bar to use both the inner and outer plates, as shown, either of these plates separately might be sufficient in some cases.

Having thus. described my invention, I claim and desire to secure by Letters Patentl'. The within-described bolster-guide bar for railroad-car trucks, the same consisting of a sheet-metal plate struck up to form ribs or corrugations, whereby the desired structural strengthv isimparted thereto, substantially as specified.

2. The within-described bolster-guide bar for railroad-car trucks, the same consisting of a corrugated sheet-metal plate with opposite edge flanges, substantially asspecified.

3. The Within-described bolster-guide bar for railroad-car trucks, the saine consisting oftwo plates of sheet metal secured together and forming between them a chamber for the reception of the bolt, whereby the bar is secured to the truck-frame, substantially as specified.

4. Thewithinedescribed bolster-guide bar for railroad-car trucks, the same consisting of two plates of sheet metal located face to face and each' having edge anges,`those of-onei plate being confined to those ot` the other plate, substantially as specified.

5. The within-described bolster-guide bar for railroad-car trucks, the same consisting of two corrugated plates of sheet metal secured together, the inner plate having attop and bottom projecting flanges overlapping the corrugations of the outer plate and forming bearings for the top and bottom bars of the truck-frame, substantially as specified.

6. The Within-described bolster-guide bar for railroad-car trucks, the same consisting of a pair of sheet-metal plates located face to face, and each having at the lower end laterally-projecting ears whereby they are secured together and to the spring-plank, substantially as specified.

7. The within-described bolster-guide bar `for railroad-car trucks, the same consisting of 9. The within-described bolster-guide bar platetor railroad-car trucks, the same con sisting of a plate of sheet metal having oppol site hollow guide lugs or ears struck up thercfrom and securing'wings beyond said guidelugs, that portion of the plate between the flugs being deeper than the wings beyond the lugs, so as to enter a recess in the bolster,

substantially 'as specified.

In testimony whereof I have signed my `name to this specification in the `presence of two subscribing witnesses.

EDWARD W. GRIEVES. Witnesses:

F. J. COLE, B. L. HENDERSON.

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