US1593469A - Locomotive bed - Google Patents

Description

1925 '2 Sheets-Sheet 1 of, Q

` H.- M. PFLAGER'ET AL 4 Loco'Mo'IfIvE BED Eiled Dec@ July 20 1926.'

Patented July 20, 1,926.

UNITED STATESPATENI oF'Fici-i,

yIEIAEEY M. PELAGEE AND JAMEs o. TRAVILLA, JR., or s'r. Louis,` MISSOURI, Asf SIGNOR-s To COMMONWEALTH s'rEEL coMPAiIz, or sfr. LoUIs, MIssoUEI, A oon- PORATION F NEW' JERSEY. y

LocoMo'rIvE EED.v

Application led December 7, 1925. Serla1'No.,73,6Q8.

,Our invention relatesjto railway rolling stock and consists in an improved locomotive bed or frame structure.

The main object of our invention is. to

provide a locomotive bed possessing a high degree of rigidity and durability without any undue increase lof material and weight. Preferably this improved bed consists in a one-piece casting having a number of parts formed integrally .which have hitherto been added to the frame separately. We vare aware that it has been suggested previous-4 ly that frames of this type be formed of a one-piece casting and such a frame 1s described in the copending application of H. M. Pflager, one of the parties hereto, Serial Number 753,277 filed December 11, 1924, patented December 22, 1925, No. 1,566,423. However, there have been instances in the 2 manufacture of one-piece frames of great length, which while the same would possess sufficient strength to carry their normal load and to withstand such buiing and pulling stresses as are encountered in normal use, they would not always withstand being lifted by crane chains or similar means attached to their. ends only, and an object of our present invention is to so form the frame that this weakness may be overcome. i0 Briey, we attain these objects by making the frame box-shape in cross section with the outer walls of the box forming the outer sides of the frame and extending in a straight line from the front end of the 85 yframe to therear end of the cradle.

In the accompanying drawings illustrating a selected embodiment of our invention- Figure 1 is in part a top view and in part a longitudinal horizontal section taken on line 1 1 of Figure 2.

Figure 2 is a vertical longitudinal seotion taken on line 2 2 of Figure 1.

Figure 3 is a side elevation of the frame,

with the driving wheels indicated in broken lines.

' Figures 4, 5, 6, and 7 are sections taken, respectively, on lines 4 4, 5 5, 6 6, and 7 7 of Figure 1, Figure 7 also showing a driving axle and wheel with its box, spring saddle and spring support.

The main frame or bed comprises side -frames 1` top walls 2, and bottom walls 3 which form a boX section substantially throughout the length of the frame. At in tervals suitable openings are provided in each of these walls to lighten the same without unduly reducing the strength'thereof. It will be noted that the side walls'l ex.' tend rearwardly beyond the end of the bed proper to form the cradle portion of the frame and are united at their rear ends ,with ,transverse elements forming the foot plate .4, drawbar pocket 5, and corresponding parts.

At each of the driving axles, the height of the side walls is greatly reduced but to' compensate therefor the, walls are thickened at these points as indicated-at 6 and the side walls 1 are supplemented by additional longitudinal vertical walls 7 lparallel with y70 'and spaced inwardly from the side walls and cooperating. therewith to form the pedestal portions of the bed. 4

At these portions of the bed, the upper and lower walls of the same are provided 76 with vertical openings adjacent inner wall 7, each ofwhich openings is adapted to receive one leg of an inverted U-shaped spring saddle 8 which straddles the side of the bed and is carried on the drivingv box 9. This 80 arrangement increases the clearance between the driving wheels l() and the frame and as there is no portion of the frame between the wheels and the springs 11 the application and inspection of the latter are facilitated.

In the structure just described, we prefer to provide integral equalizer fulcrums 12, brake hanger brackets 22, equalizer hanger, lugs 13, boiler support brackets 14, cylinder brackets 15, and boiler saddles 16. These' 90 and various other elements which are usu-y ally formed separately and assembled withv Y the frame maybe cast at the same time as the body of the frame and the labor and material necessary for assembly is elimi`95 nated. This construction has theadditional advantage of maintaining the rigidity of the parts and their spacing from each other" which cannot be relied upon when the parts are riveted or bolted together.

Transverse partitions or walls are provided onLv the interior of the box-shaped frame at 17 and serve to reinforce the side walls 1 and the supplementary walls 7.

Uther transverse partitions 18 are provided betweentlie ends of the supplementary walls 7 and serve to brace the side walls at suchA points.

yObviously these .and other details of our invention may be modified orevfen eliminated without departing from the broad idea of the box-shaped bed having the characteristics referred to. It will be noted that the construction described eliminates any y offsets in the side wall ofthe frame, thereby reducing the stresses due tol the eccentricities of buiiing loads.

Another type of boxshape underframe is shown in the copending application of H. M. PlagerSerial No. 71,640 filed November 27, 1925, and in this application, as well as in the Pflager patent referred to in the first part of the specification, it is proposed to form the steam cylinders and supply chests integrally with the side of the frame. It will be understood that a similar arrangement of the steam cylinders and supply chests could be provided on the present frame although such is not. illustrated 'in the drawings, the latter showing the forward ends of the frame adapted to mount detachable cylinders in the usiial manner.

Various other modifications in the structure described may be made without departing from the spirit of our invention as expressed in the claims. We claim:

1. A locomotive bedY of box cross section with its side walls substantially straight from end to end.

2. A locomotive bed, including an integral cradle, said bed and cradle each being of box-shape cross section with their respective side walls aligned and extending in a substantially straight line from the front end of the frame to the rear end of the cradle.

3. A locomotive bed of box cross section with inner vertical walls spaced from and paralleling its outer walls and cooperating therewith to form pedestals for the locomotive .driving boxes.

4. A locomotive bed of box cross section with inner vertical walls spaced from and paralleling its outer walls2 and transverse vertical walls connectin sai'd inner walls on opposite sides of the belgi.

5. A locomotive bed of box cross section with inner vertical walls at intervals spaced from and paralleling its outer walls, and transverse vertical walls connecting said side walls between the ends of said inner walls.

6. A locomotive bed of box cross section with inner vertical walls at intervals spaced from and paralleling its outer walls, transverse vertical walls connecting said inner walls on opposite sides of the bed, and transverse vertical walls connecting said outer walls between the ends of said inner walls.

7. A one-piece casting comprising a locomotive bed box shape in cross section with each side wallextending in a straight line from end to end.

8. A one-piece casting comprising a locomotive bed box shape in cross section with each side wall extending in a straight line from end to end and with supplementary vertical walls parallel with and spaced inwardly from said side walls.

9. A one-piece casting comprising a locomotive bed box shape in cross ction with each side wall extending in a straight line from end to end and with sup lementary vverticalwalls at intervals para ieling and spaced inwardly from said side walls, and transverse vertical walls connecting said side walls between said sup lementary walls.

10. In a locomotive, a d of box cross section with it-s side walls substantially straight from end to endl and overlying `the driving boxes.

11. .Iii a locomotive, a bed having a side wall and a sprin saddle straddlingsaid side wall and provi ed with a spring bearing surface.

12. In a locomotive, a bed box shape iii cross section with a side wall overlying a driving box, there being an opening in the top and bottom wall of the bed near its side wall, and a sprin saddle straddling said side wall with its inner leg extending tlirou h said opening.

13. n a locomotive, a bed box shape in cross section with a side wall reduced in depthY at intervals to provide openings for the driving boxes, there being openings in the top and bottom walls of the bed adjacent said reduced portion of the side wall, and spring saddles eachstraddling said side wall with its inner leg projectin through said openings to a point below the ttom of the reduced portion of the side wall.

14. In a locomotive, a bed box shape in cross section with a side wall overlying a drivin box, there being an o ning in the top an bottom wall of the be near its side wall, a spring saddle straddling said side wall with its inner leg extending through said opening, and a vertical wall on said bed paralleling and spaced inwardly from l said side wall adjacent to said saddle.

15. In a'locomotive, a bed of box cross section with its ,side walls substantially straight from end to end and overlying the drivin boxes, and equalizer lcrums forme integrally with said walls between the driving boxes.

16. In a locomotive, a bed. of box cross vsection with its side walls substantially ias inol

Leeeeee A f "a 17. In a locomotive, a bed of box cross member at its forward end and e cradle side section with its side walls substantially member at its real" end. straight from end to end and overlying the 19. In a locomotive, a journel box', an inl5 driving boxes, and equalizer fulcrums verted U-shepedv member resting on said formed integrally on the inside of said box, a spring mounted on ,said member, and

walls between the drivingboxes and brake e bedfsupported by said spring and extendf hanger fulorums formed integrally on the ing through said U-shapedmember. Q outside ef said walls between driving boxes. In testimony whereof we hereunto aflx 20 18. A locomotive bed, box-shape in cross our signatures this 27 day of November, 1925.

10 section with each sidewall extending substantially in a straight line from end to H. M. PFLAGER. end and forming e steam cylinder mounting JAS. C. TRAVILLA, JR.

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