USRE14350E - By westiwg - Google Patents

Description

W. COOPER, DEC'D. wzsnummus: ELECTRIC a mAupr'Acwmus COMPANY. ASSIGNEE. RAILWAY VEHICLE. APPLICATION FILED DEC.20. 1916.

2 SHEETS SHEET 2.

Reissued Sept. 11, 1917.

WITNESSES: W/YI/Zrm Coqbz r gc gard I AI'TORNVEY UNITED STATES PATENT OFFICE.

WILLIAM COOPER, DECEASED, LATE OF PITTSBURGH, PENNSYLVANIA, BY WESTING- HOUSE ELEC'TRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA, ASSIGNEE.

RAILWAY-VEHICLE.

Specification of Reissued Letters Patent. Reissued Sept, 11 1917.

)riginal application filed March 2, 1910, Serial No. 546,853. Renewed December 7, 1914, Serial No. 875,964.

Original No. 1,166,187, dated December 28, 1915.

Serial No. 138,136.

To all whom it may concern:

Be it known that WILLIAM COOPER, deceased, late of Pittsburgh, in the county of Allegheny and State of Pennsylvania, during his lifetime invented certain new and useful Improvements in Railway-Vehicles, and that the WVnsTINonoUsn ELno'rnio & MANU- FAOTURING COMPANY, a corporation organized and existing under the laws of Pennsyl- Vania, assignee of WVILLIAM COOPER, now deceased, hereby declares to the best of its knowledge and belief that the following specification, taken in connection with the drawings furnished and forming a part of the same, is a clear, true, and complete desciiiption of said improvement.

i y invention relates to railway vehicles and particularly to such electrically pro pelled' vehicles as comprise a pair of guide trucks located at the respective ends of the cab or body and a plurality of interposed driving wheel axles.

One object of my invention is to so construct and equip a railway vehicle of the class above indicated that its body may be virtually supported at three points, one of which is substantially in the center of the leading truck for either direction of opera tion.

I have for a second object to provide means, under the control of the vehicle driver, for locking swing bolster trucks, such as are ordinarily employed in locomotive practice, against swinging, as desired, whereby the stability of the vehicle in operation may be increased by preventing the swinging of the trailing truck while permitting its swiveling movement. 1

Another object of my invention is to provide means for locking the trailing truck of the locomotive against both swinging and swiveling in order toincrease the rigid wheel base of the locomotive, without relinquishing the leading action of the swivel truck at the forward end of the vehicle for either direction of operation. I

In electric locomotives having a plurality of driving axles constituting a rigid wheelbase and two swivel trucks located at the respective ends, as heretofore constructed, the vehicle body has ordinarily been supported Application for reissue filed December 20, 1916.

close to the king pin, the trucks being virtually single-point supporting trucks. A large proportion of the weight is of course borne by the driving axles, a system of equalizlng bars being usually provided in order to properly distribute the weight and to permit the body to be resiliently mounted. This arrangement, however, is substantially equ1valent to a two-point support and, therefore, with single-bearing swivel trucks, four points of support for the vehicle body, are provided. If side-bearing swivel trucks are substituted for the trucks. having singlepoint supports, the stability of the locomotive is obviously not improved, since neither a four-point nor a six-point support is considered desirable for service ofthis character. I

The difliculty might be partially overcome by locating a single bearing truck at the leading end of the locomotive and a sidebearing truck at the trailing end. This arrangement, however, would be of advantage only when the locomotive is operated solely in one direction.

In order to improve the stability and the operating characteristics of railway locomotives provided with electric driving motors oflarge size, which are located in the cab, I provide means for changing each of the swivel trucks, which are located at the respective ends of the locomotive, from a single bearing to a side-bearing supporting truck, as desired.

Means are also provided for locking the trucks against either swinging, or swinging and swiveling, as hereinafter pointed out. 7 In securing the objective results referred to above without limiting the locomotive to one direction of travel, I utilize single bearing swivel trucks, and provide means for so changing the trailing truck that it supports the body at two points without interfering, in any way, with the operation of the locomotive. The means which I prefer to employ are so simple that the locomotive driver is able to eifect the change by admitting air pressure to a cylinder or cylinders, very much as air pressure is admitted to the brake cylinders of the locomotive. Furthermore, the equalizing system is en larged to include the trailingtruck of which. it is normally independent.

In the accompanying drawings, Figure 1 is a partial side elevation of a locomotive constructedi'n accordance with my invention, a portion of one side of the cab being broken away. Fig. 2 is an end elevation, partially in cross-section, of the running gear of the locomotive showing one of the swing bolster guide trucks. Fig. 3 is a partial plan View of the bolster and certain of the details shown in Fig. 2, and Fig. 1 is viewcorresponding to Fig. 2 but showing only a part of a slightly modified structure which embodies: my invention;

Referring to the drawings, the locomotive here shown comprises a frame 1 which is supported: by driving-axles 2: and 3 and swivel trucks 4 (only. one of which. is shown) located at the respective ends of thevehicle, and a cab 5, which is mounted on the frame.

Each of the trucks 4 comprises a pairvof' wheel-axles 6 and 7, a: bolster 8, a swing center'9, and a truck frame 10, the. bolster being resiliently supported. upon the truck frame'by means of springs 111. The vehicle frame 1 is provided with body bolsters 12 which are directly above the truck-bolsters andeach of them is provided with a swivel-- ing' plate 13 having a cylindrical recess 14 which is engaged by a cooperating: cylinr-.- drical projection 15 of the swing'center 9, the arrangement of parts being: S'LlChl that each of the trucks 4 is adapted to swivel about its cylindrical projection 15 as an axis.

It: is evident: that the above described con nection between the body of the vehicle and the trucks virtually constitutes a singlepoint support and, in. order-to increase the stability of the vehicle body, I: provide a pair of levers- 17 which are connected at their inner ends, ashereinafter set forth,

'. to the equalizing: system with which the locomotive is equipped, the opposite ends of the rods being connected by links 18,. to pistons 19 which operate within cylinders- 20 that are rigidly secured to the vehicle body- The levers 17 are: provided with rollers 22. that are adapted to rest upon the upper surfaces of brackets 21,. that are securedl to and formrparts ofthe truck b011- sters 8,. when the pistons 19 are forced downwardly by the admission of come pressed air tothe cylinders 20. Positioning pins 17 are alsoassociated with the levers 17 for a purpose to be hereinafter. ex: plained.

The levers. 1E7 are guided and are pre'- vented from: being displaced laterally by" sets of projections 22. which extend. down.- wardly from brackets 23* that are secured to theflocomotive side framesl by. bolts or The'brackets 21 are other suitable means.

, entered into the curved slots 2d";

truck 4: and are spaced apart to provide slots 24: to receivethe-positioning pins 17 whenthe-levers 17 occupy-their lower positions. The parts are so arranged that the levers 17 normally rest between the guide projections22 except when the pistons 19 are forced downwardly by the admission of air tothe cylinders 20. hem this action takes place: the rollers 22: are pressed: downwardly against the upper surfaces ot the brackets 21 and the positioning pins 17 are In this position the truck bolster 8' isprevented from, swinging. since the vehicleframe and theitruckibolster are locked against relative latenali displacement, while the swiveling action of the truckis still permitted bysre'ason: of the contour ofathe guid'e'members2dri The: equalizing. system comprises a. pinrality' oii levers 23,.links 2a, and springs 25 which maybe arrangedi'n any suitable man ner, that shown in Fig; 1 of the drawings being; the usual arrangement. The end links: 24 of: the. system are connected; to the inner'e'nds oftherods 17 instead of being afiixedi to the vehicleframe. The extremi ties; of the rods 1-7 ,.however,.extend1slightly beyond the points ofi connection with the links 245 and are supported by projections 26 of the frame: 1' and: interposed springs Each of thepistons 19 is provided with a spring'28' which. actsin opposition to the 0 air pressure within the cylinder 20 and tends to keep the rollers 22" outof' engagement: with the corresponding brackets 21".

It isevident that, under normal conditions, thesequalizing links 24:are virtually connected to the vehicle frame through the springs 27-, since thepoints of connection between the links and the rods 17 are close to* the springs 27 and are materially separated from the opposite endsof the rods.

Since the two ends of? the locomotive are substantially identical, I have only shown one end inorder to use an largerscal'e and so make the drawings clearer.

Whenlit'iis desired to operate the locomo tive in one direction- (for example in that indicated by the arrow 29 in Fig. 1), the; stability of the locomotivebody maybeimproved materially by applying compressed airto: the cylinders 20 abovethe piston 19 at the trailingend of the locomotive. When this is done, the pistons are forced downwardlyin opposition to the springs 28 andthe-rollers 22 are pressed into engagement with the brackets 21 of truck-bolster 8 with suflioient force to slightly separate" the thrust bearing: surfaces of the swing center 9 and: the plate 13;. Inthis Way, the truck is c'onverted into a sidebearing swivel truck, the weight of: the body which is borne by the truck being supported near the ends of the truck bolster 8 instead of at its central point.

' The downward pressure on the outer ends of the levers 17 relieves the springs27 of the weight normally borne at these points and makes the levers 17 parts of the equalizing system already described. Hence, the locomotive is virtually supported at three points, one being at the center of the leading truck and the other two in the enlarged equalizing system.

In operating the locomotive in the opposite direction, pressure should be applied to the cylinders at the opposite end of the vehicle. By this means, it is possible to maintain corresponding relations for either direction of travel.

If the rigid wheel base of the locomotive is relatively short, the stability of the vehicle in operation may be increased by substituting friction shoes 30 such as are shown in Fig. 4 for the rollers 22 of the other figures, while no curved guide projections are required. If pressure is applied to the rear cylinders 20, with this arrangement, not only is the trailing truck converted from a.single to a side bearing truck, but, furthermore, the trailing truck becomes a part of the rigid Wheel base of the locomotive.

I believe that my invention is broadly new, the structures illustrated in the drawings being only intended to represent an operative means for practising the same. Various other devices for accomplishing the same result will undoubtedly suggest themselves to those skilled in the art, and I desire, therefore, that only such limitations shall be imposed as are indicated in the appended claims,

I claim as my invention:

1. In a railway vehicle, the combination with a body frame and a swivel truck comprising a pair of truck wheel axles and a frame having a truck bolster upon which the body is centrally supported, of means for transferring the weight of the body to two side points of support which are located near the respective ends of the truck bolster.

2. In a railway vehicle, the combination with a body and a truck comprising wheel axles and a frame having a bolster upon which the body is pivotally supported, of means for temporarily supporting the body at two points which are located near the respective ends'of the bolster without interfering with the swiveling of the truck.

3. In a locomotive, the combination with a body, a pair of swivel trucks upon which trucks to points near their sides and between the truck axles.

4:. In a locomotive, the combination with a frame having body bolsters near its ends, a pair of swivel trucks upon which the frame is supported at the centers of the body bolste'rs, driving wheel-axles located between the swivel trucks, and equalizers comprising side springs above the respective driving axles, leverspivotally mounted on the frame and links connecting the ends of the springs to the levers for throwing a portion of the weight upon the driving wheelaxles, of levers that are connected to the equalizers and'extend over the trucks, and

means carried by the frame for forcing the levers into engagement with the truck bolsters near their ends to change the points of support from the centers of the body bolsters to points near their ends, as desired.

' 5. In a railway vehicle, the combination with a body member having swivel trucks located at its respective ends and interposed driving wheel-axles constituting a rigid wheel base, of means for locking the trucks against swiveling.

6. In a railway vehicle, the combination with a body member having swivel trucks located at its respective ends, and interposed driving wheel-axles constituting a rigid wheel-base, of means for locking the trucks against swiveling, whereby the trailing truck becomes a part of the rigid wheelbase for either direction of travel. 7. In a railway vehicle, the combination with a body having swivel trucks at its ends, interposed'driving wheel-axles constituting a rigid wheel-base and equalizers for yieldingly mounting the body on the driving wheel-axles, of levers forming extensions to the equalizers and projecting over the sides of the trucks, friction shoes attached to the levers, and means for forcing the friction shoes into engagement with the bolster, whereby the point of support is transferred from the center to the sides of the truck and the truck is locked against swiveling, as desired.

8. In a railway vehicle, the combination with a body having center-bearing swivel trucks at its ends interposed driving wheelaxles constituting a rigid wheel-base, and equalizers for yieldingly mounting the body upon the driving wheel-axles, of levers forming extensions to the equalizers and projecting over the sides of the trucks, friction shoes carried by the levers, and actuating cylinders and pistons carried by the vehicle body for forcing the'shoes into engagement with the trucks, whereby the trailing truck may be changed from a center to a side-bearing truck and be locked'against swiveling.

9. In a vehiclepthe combination with a body and a truck having a swing bolster, of

means for preventing: the swinging; of? the bolster.

10; Ina railway vehicle,.the combination with. a body and a center-bearing truck having' alswingbolster, of means-for converting' the truck from a center to a side-bearing. truck and for lockingthe truck bolster against swinging.

11'. In a railway vehicle,the'combination.

with a body, drivingwheel aXlesand centerbearing; swivel trucks-on whichthe body, is supported, of a systemofflequalizers by which the weight is distributed on the driving wheel axles, and meansifor extending: the equalizers; to include the swivel trucks and for converting them from center to side-bearing trucks, as desired.

12 In a railway vehicle, thecombination with a body anda truck: embodying aswingtruckbolster, ofi means for temporarily preventing theswinging of the truck bolster andv for'converting the truck from a centerto, a" side-bearing truck.

13. In a railway vehicle, the combination with a body member and swivel truckslocated at its respective ends: and; having swing bolsters,- of means. for locking the trucks against swiveling and preventing the swinging of the truck bolsters; v

at its respective ends and having swing bolster-s,- and interposed. driving wheel axles constituting a rigid wheel base,,of means:

- 1 forlocking thetruckbolsters against swinging and for preventing; the trucks from swiveling, whereby the trailing truck becomes apart of the rigid: wheel; base of the,

vehicle for either directionlof travel;

truck against pivotal. movement and redistributing. the load thereon.

16. In a vehicle, the combination with a. pivotal truck, of means controllable from the vehicle for converting said truck intoa rigid side-bearing truck.

17. In a vehicle, the combination with a body and apivotaltruck, of means for locking' said truck to said. body' ini alinement I therewith and transferring the load from the center'tothesides'of said truck.

18.. In a vehicle, the combination with body and a pivotal truck, of power-operated means for: preventing relative pivotal movements of. said truck and; body.

19. In a vehicle, the combination with a plurality of pivotal trucks, ofmeans ior locking the rear truck against. pivotal move-- 60,: ment and redistributingtheiloadithereon.

20. In a vehicleythe. combination with a plurality of pivotal trucks, of meansfor converting the rear truck into a rigid side: bearing truck in eitherdirection of operation. I

14. In a railway vehicle, the combinatio with a; body member, swivel trucks located 15, In a vehicle,ithe combination w-ith ar pivotal truck, of means for locking said,

new

of controllable means for transferring the weight of the body to a plurality of'points in substantially the transverse plane of, the pivotal connection.

24;. In a vehicle, the combination with a body, and a: multi-axle truck having a piv otal connection t'o'said body,,of controllable means for supporting said body solely upon transversely disposed points intermediate thetruck axles.

25.- In a vehicle, the combination with a body and a pivotal truck for supporting said body, of manually controllable means for supporting said body solely upona plurality of transversely disposed points without interfering with the pivotal movementof the truck.

26. In a: vehicle, the-combination with a bodyandza pivotal truck having a swingbolster, of means for locking said bolster against swinging while: permitting pivotal movements of said truck.

21. In avehicle, the. combination, with av bodyand apivotal truckhaving? av swingibolster, of' means for locking said bolster against swinging. and preventing pivotal movements of said truck. I

28. In a railway vehicle, the combination with aibody, driving-wheel axles and centerbearing swivel trucks on which the body is supported, of a system of equalizers by whichtheweight is distributed on the drivingwheel axles, and means for extending the equalizers to include the swivel trucks and for locking said trucks against swivel- 29., In a railway vehicle, thecombination with a body, driving wheel axles-and centerbearing: swivel tr-uckson which the body is supported,wofv a. system of equalizer-s by?" which the weight; isdistributed on-the driving wheel I axles, and means for converting the swivel trucks int-o rigid trucks andfor extending the equalizers to includesaid trucks.

30: Ina vehicle, the combination with av I body, a, main truck and an equalizer system for normally supporting said body, of a pivsaid. equalizer system.

31. In a: vehicle, the combination with a body, driving wheel axles, and a plurality of end pivotal trucks, of an equalizer system for normally providing fiexible side suspensions for said body upon said driving wheel axles and controllable means for including one of said trucks in said equalizer system whereby a virtual three-point suspension for said body is provided.

32. In a vehicle, the combination With a body, driving wheel axles constituting a rigid wheel base, and a plurality of end guiding trucks, of equalizing means for supporting said body solely upon'said driving wheels and the rear guiding truck in either direction of operation.

33. In a vehicle, the combination with a body, driving wheel axles constituting a rigid wheel base, and a pivotal rear guiding truck, of means for increasing the length of the rigid Wheel base to include said truck.

34L. In a vehicle, the combination with a body, driving Wheel axles constituting a rigid Wheel base and a plurality of pivotal end guiding trucks, of means for extending the rigid wheel base to include the rear guiding truck.

35. In a vehicle, the combination with a body and a lurality of swin bolster end guiding trucl zs, of controllab e means for locking the bolster of the trailing truck against swinging.

36. In a vehicle, the combination with a body and means for supporting said body, of selective means for efl'ecting a three-point suspension for said body whereby the for Ward end thereof is supported at a single point in either direction of operation.

In testimony whereof, I have hereunto subscribed my name this 13th day of Dec, 1916.

WESTINGHOUSE ELECTRIC &

- MFG. COMPANY,

By T. P. GAYLORD,

Acting Vibe-President.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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