US825037A - Car-truck. - Google Patents

Description

PATENTED JULY 3, 1906. E. I. DODDS.

GAR TRUCK.

APPLICATION FILED 00130, 1905.

4 SHEETSSHEET 1.

PATENTED JULY 3, 1906.

E. I. DODDS.

GAR TRUCK. 'APPLIOATION FILED OCT. 30, 1905.

EETS-SHBET 2.

PATENTED JULY 3, 1906.

E. I. DODDS.

GAR TRUCK.

APPLICATION FILED 00130, 1905.

4 SHEETS-SHEET 3 PATENTED JULY 3, 1906.

E. I. DODDS.

GAR TRUCK.

APPLICATION FILED OCT.30, 1905.

4 SHEETSSHEET 4.

' rrn STATES PA'iENT orrron ETHAN I. DODDS, OF PULLMANILLINOIS, ASSIGNOR TO THE PULLMAN COMPANY, CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CAR-TRUCK- Specification of Letters Patent.

Patented July 3, 1906.

To all whom it may concern:

Be it known that I, ETHAN I. Donns, a citizen of the United States, residing at Pullman, in the county of Cook and State of Illinois, have invented-certain new and useful Improvements in Car-Trucks, of which the following is a specification.

Although it is desirable to have all the parts of a railway-car-truck frame integral, the same being made by casting, it has been found that such a structure shrinks unevenly and twists to such an extent as to render its use infeasible. To overcome this difliculty and at the same time make the frame as near integral as is permissible, thereby securing economy in manufacture, rigidity, and strength, I have invented a frame the. referred mechanical embodiment of w 'ch comprises two cast-metal side members which are joined together by transoms, the length of which may be varied to compensate for any inequalities in the shrinking of the metal of the sides. These side members have integral inwardly-projecting portions to which the swing-hangers which support the spring-planks are attached, and integral with each of these portions is a safety-beam provided with a recess on its under surface to fit over the adjacent axle.

In the accompanying drawings I have illustrated two embodiments of my invention, like reference characters referring to the same parts throughout.

Figure 1 is a side elevation, partly in longitudinal vertical section, of the preferred embodiment of my invention. Fig. 2 is a plan view of the truck illustrated in Fig. 1. Fig. 3 is a perspective view of one of the side members of the frame of said truck. Fig. 4 is a plan view of a modified form of truckframe, and Fig. 5 is a perspective view of one of the side members of the frame shown in Fi 4.

Iieferring first to Figs. 1, 2, and 3, the truck-frame includes two cast-metal side members 10, of which one is shown in per spective in Fig. 3. The main outer portion of each side member includes a vertical web 11, which joins together top and bottom intcgral flanges 12 and 13, respectively, which for the greater portion of the len th of the side member extend from both si es of web 11. At those points of the frame where the pedestals 14 are attached the web is deflected outwardly, as at i5, to the outer edges of the top and bottom flanges to form vertical surfaces against which the pedestals may be secured. At the points 16, 'where the web begins its outward deflection, it is somewhat enlarged and provided with vertical apertures 17, through which the securin -bolts of the pedestals are adapted to pass; it its extreme ends 18 web 11 is deflected inwardly to the inner edges of the top and bottom flanges 12 and 13 to form convenient means for attaching angles 19, which secure the end transverse I-beams 20 to the side members, as is shown most clearly in Figs. 2 and 3, cornerplates 19 being riveted to the top flanges of the side members 10 and I-beams 20. At the oints 21 web 11 is enlarged, so that it is of the same width as the bottom flange 13, the enlargements having vertical holes 22, through which pass bolts to secure in place the transverse the swing hangers, each of which comprises 'a forlred upper portion 24 and an offset depending arm 25.

Extended inwardly from each side member are two integral supporting portions, each having a vertical Web 27 and top and bottom flanges 28 and 29, res ectively. Each of these webs is enlarged at the point 30, said enlar ement having two vertical apertures 31, through which bolts pass to secure in place the swing-hangers 32, as shown in Fig. 1. The lower ends of hangers 25 and 32 are united by the usual lower cross-pins 33, which support the customary spring-plank 34, having the superposed elliptic springs 35, as is usual. Each ortion 27 has an integral outwardly-exten ed safety-beam 36, I shape in section, which. is recessed onits under surface at 37 to pass over the car-axle. Straps 38 join the upper flanges of the safety-beams 36 to the lowef flanges of the end transoms 20, as is illustrated in Figs. 1 and 2. Channel-beams 39 tie together the two side members, being riveted to webs 27, as shown in Fig. 2. Each side member is also supplied with a plurality of integral equalizing-bar spring-caps 40, with which cooperate the equahzing-springs' 41, which rest upon equalizmg-bars 42, as is usual.

bars 23, to which are pivoted 'ened. The top flan It should be noted that those portions of the side members which are tied together by the transverse bars 20 and 39 are somewhat lower than themain portions of the side members, this construction being clearly illustrated in Fig. 1

It will be evident that the inequalities of the cast side members, due to unequal shrinking and warping, may be compensated for wholly or in part by the proper attachment of the transversebars 20 and 39.

In the modified structure shown in Figs. 4 and 5 the side members are much the same as those illustrated in other figures, exce t that the safety-beams 43 extend the wlible distance from the hanger-supporting portions 27 to thexends of the frame, the ends it in this construction being integral with thesides and with the safety-beams. The end portions 44 instead of being united by an I-bar, as shown in Fig. 3, are tied together by the ordinary channel bar 45.

It should also be noted that in both of these embodiments of my invention. the top flanges of the side members are in certain parts, as at- 46 and 47, wider than the lower flanges, whereby the structure is strengthes of the safety-beams may be widened atthe points of attachment of straps 38, if desired, as shown at 48 in Fig. 2.

This patent is intended to embrace only so much of the disclosure made'herein as is covered by the claims.

I claim- I 1. In a railway-car-truck frame, thecombina-t-ion of two cast-metal side members each having an integral inwardlyrojectingportion for supporting a swingranger, and a bar attached to and connecting said portions. substantially as described.

2. In a railway-car-truck frame, the combination of two cast-metal side members each having an integral inwardly-projecting ortionfor supporting a swing-hanger. eaci of said portions having a safety-beam integral therewith, and one or more bars connecting 1 said side members together, substantially as described.

3. in a railway-cantruck frame. the combination of two cast-metal side members tied together by transverse bars, each of said membeis having an I cross-section for a 10ft ion of 1 its length and channel-sections at those portions to which the pedestals are attached. substantially as described.

4:. In a railway-car-truck, frame. the combination of two cast-metal side members tied togetherby transverse bars, each member having a vertical web and integral top and bottom flanges, said web being enlarged at the oints where the swing-hanger-su iporting ars are attached thereto, substantially as described. i

5. In a railwaywar-truck"frame, the comasses? bination of two cast-metal side members tied together bytransverse bars, each side mem her having a web and top and bottom flanges,

said web being enlarged at those ortions where the swing-hanger-supporting ars are attached thereto, each side member havinga plurality of integral inwardly-projecting por tions adapted to support other swing-hangers, said portions having each a web and top and bottom flanges, said webs being enlarged at the points where the swing-hangers are attached thereto, substantially as described.

7-. A cast-metal side member for a railwaycar truck having laterally rejecting end portions integralwith said si e member and one or more laterally-extended swing-ha tiger-supporting portions integral with said side member, substantially as'described.

8. A cast-metal side member for a railwaycar truck having a laterally-projecting end portion integral with said side member, a laterally-extended portion adapted to support a swing-hanger integral with said side member, and a safety-beam integral with said end and swing-hanger-supporting portions. substantially as described.

9. A cast-metal side member for arailwaycar truck having top and bottom marginal flanges, a laterally-projecting end portion with top and bottom flanges mtegral with said side member, a laterally extended portion with top and bottom flanges adapted to su port a swing-ban er integral with said Sit e member, and a saety-beam with top and bottom flanges and recessed on its under side integral with said end andswing-hanger-supporting portions, substantial] as described. 7

10. In a railway-car-tmck me, the 00mm bina tion of cast-metal side members eachhaving integral therewith laterally-extended end portions and one or more laterally-pro'ecting swing-hanger-supporting ortions, an trans verse bars attached to an tying together the pa he of corresponding laterally-extended end and swingdianger-sugporting port-ions, substantially as describe 11. In a railway-car-trnok fianimthe com bination of cast-metal side members eaehhaving integraltherewith laterally-extended end portions lower than the main portion of the side member and one or more laterally-pmet-ting swing hanger supporting portions whose ends are lower than the main portion 0 v the side member. and transverse bars sec to and tying together the corresponding pa of projecting end and swinghangin -support-- ing portions.substantially as described.

12. in a railway-caramel; harm, the cam bination of oastanetal sidemernbers each hav ing integral therewith laterally-extended end the corresponding pairs of projecting end and portions lower than the mam part of the swing-hanger-sup orting portions, substanto side member, one or more laterally-projecting tially as described? swing-hanger-supporting portions whose ends ere lower than the main part of the side mem- ETHAN DODDS' bar, and safety-beams connecting seid swing- Witnesses: hanger-sup orting and end portions, and IWALTER M. FULLER,

transverse ars secured to and tying together FREDERICK C. GOQDWIN.

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