US1241500A - Locomotive. - Google Patents

Description

G. M. EATON.

LOCOMOTIVE.

APPLICATION FILED IMY 1!. m4.

Patented Oct. 2, 1917.

E N R 0 A durable UNITED STATESPATENT GEORGE M. EATON, OF PITTSBURGH, PENN$YLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

LOCOMOTIVE.

Specification of Letters Patent.

Patented Oct. 2, 1917.

Application filed May 11, 1914. Serial-No. 837,745,

To a whom it may concern:

lie it known that I, Gnoncn M. EATON, a

citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Locomotives, of which the following is a specification.

My invention relates to electrically propelled vehicles, and it has special reference to electric railway locomotives.

The object of my invention is to provide an electric locomotive of the articulated type which shall be simple, strong and in construction, powerful and smooth-running in operation, and so constructed that it may be readily overhauled for repairs and reassembled with facility.

According to my invention, I provide a set of geared twin motors for each driving truck which are spring-supported between the driving axles and are mechanically connected to the driving wheels through a countershaft and side rods. By reason of the size and location of the driving motors, with respect to the side frames of the truck, it is impossible to provide a pivotal driving connection between the trucks and the 1000- motive body in the customary manner and, I, therefore, provide means associated with the side frames and disposed between the motors and materially above them for effecting the pivotal connection. 7

Moreover, I provide partially cylindrical motor-supporting frames which transversely between the side frames and are provided with end projections that are seated in suitable recesses in the inner sides of the respective side frames. When the motor supporting frames are rigidly secured to the side frames by bolts or other suitable means, the motor frames constitute permanent cross-ties of the truck frame and provide a particularly strong and rugged structure.

The driving motors differ in certain respects from the usual type of motor in that each motor embodies but a single substantially semi-cylindrical supporting frame into which. a separable magnetizable core is seated and clamped in position, while the motor armature is supported in bearing housings, which are detachab-ly secured to extendthe locomotive side frames in concentric-nelation to the motor frame and magnetic able core. The magnetizable core member is entirely uncovered, and the end portions. of the armature are protected by suitable casings, preferably of sheet material.

My invention may best be understood by reference to the accompanying drawing, in which Figure 1. is a view, in side elevation, of a portion of a locomotive constructed in accordance with my invention, certain parts being removed for the sake of clearness; Fig. 2 is a plan view of a portion of a locomotive shown in Fig. 1; Fig. 3 is a View, partially in section and partially in end elevation, of one of the driving motors, the section being taken along the line III-III of Fig. 1; Fig. 4 is a view, partially in section and partially in elevation, of the pivotal driving. connection between the locomotive body and one of the driving trucks, the section bein taken along the line IV IV of Fig. 1; Figs. 5 and 6 are, respectively, a view in side elevation and a plan view of the set of driving motors shown in Fig. 1, and Fig. 7 is an enlarged detail view of the means for clamping the magnetizable core members of the motors in position.

Referring to the drawing, the structure shown comprises a locomotive body 1, and a plurality of articulated driving trucks 2 and 3 associated therewith, each of which is provided with a plurality of driving motors 4 and 5 which are carried by the side frames 6 and are mechanically connected to driving wheels 7 through the agency of pinions 8, gear wheels 9 andrside rods 10.

The locomotive body 1, in general, may be of any suitable construction and embodies a central raised floor portion 12 of trussed structure in order toaccommodate the driving motors anda suitable center-pin structure. Any suitable construction may be employed for providing the raised floor portion ofthe cab body, but I find it preferable to employ elevated longitudinal beams 13 which are disposed within the main floor longitudinal beams 14 and are rigidly supported by means of inclined trusses 15 and cross ties 16 and 17. The cross-tie 16 exten ds transversely between the main floor longitudinal beams 14, while the cross-tie 17 extends between the elevated beams 13. Be-

tween these ties 16 and 17, and in the central plane of the locomotive, is a centering block 18 which carries a suitable center pin 19 that is associated with the driving truck in such manner as to provide a pivotal driving connection between the truck and the locomotive body, as will be hereinafter set forth. As shown, the center pin 19 serves merely as a pivot and driving connection and takes no weight of the cab body, which weight is transmitted to the driving trucks through suitable spring-loaded friction plates 20, in a well-known manner, although I do not wish to be restricted in this respect.

Each driving truck embodies a plurality of side frames 6 which are provided, as is customary, with journal boxes 26 in which the driving axles 27 are disposed. The locomotive side frames 6, moreover, are supported on the journal boxes 26 by means of equalizer springs and linkage mechanisms 28. Each side frame 6 is provided, between the driving wheels 7, with a plurality of substantially semi-circular recesses 30 in the upper edge thereof, and with concentric substantially semi-circular recesses 31 in the inner side thereof. The recesses 30 and 31 of the respective frames are correspondingly disposed and the recesses 30 serve to support bearing housings 32, while the recesses 31 serve as seats to receive the ends of the motor frames, as will be hereinafter described.

Each of the driving motors comprises a supporting frame 35, a separable magnetizable core 36, an armature 37, a plurality of bearing housings 32, and a plurality of inclosing casings 57. The supporting member or frame 35 is substantially semi-cylindrical in form and is provided with end projections 39 which are also semicylindrical and a adapted to be seated within the recesses 1 in the respective side frames 6 and are bolted or otherwise secured thereto. The middle portion of the supporting frame 35 is counter-bored to provide a semi-cylindrical seat 35 in which the cylindrical magnetizable core 36 rests, said core preferably comprising a plurality of laminations which are disposed side-byside and are intimately fastened together between end plates 40.

The supportin frame 35 is provided with an outward y projecting side lug or bracket 41 which is flush with its upper surface and with which a clamping member 43 cooperates. The member 43 is of substantially the length of the core 36 and is provided with downwardly projecting lugs 44 at each of its sides. One side lug 4A of the member 43 rests upon the bracket 41, while the other side lug is disposed within a. longitudinal slot 47 that is provided in the magnetizable core member 36at aheight corresponding substantially to the upper surface of the bracket 41. A plurality of clamping bolts 48 project through the bracket 41 and clamping member 43 intermediate its sides, and, thus serve to hold the core member 36 rigidly in position.

Inasmuch as the motors 4 and 5 are assembled in side-by-side relation, the adjacent sides of the respective supporting frames 35 are provided with a plurality of relatively narrow brackets 50 instead of a single bracket of the substantial length of the core member 36, and these brackets 50 are so disposed as to interlock with each other, as shown clearly in Fig. 6. The adjacent portions of the magnetizable cores 36 of the motors 4 and 5 are recessed and provided with substantially parallel faces 52 which are spaced sufliciently to permit the positioning of a clamping member 53 which is similar in construction to the member 43, already described. This intermediate clamping member 53 co6perates with ledges 54 on the respective cores 36, and serves to clamp down said cores, through the agency of bolts 55.

Care should be exercised to secure a concentric relation between the cylindrical bearing surfaces of the projecting members 39 of the supporting frames 35 and the intermediate cylindrical seats 35 in which the cores are placed. If this relationship is secured, and also a concentric relation of the recesses 30 and 31 of the side frames, it is clear that the motors, when assembled in position, will have the desired concentricity of armature and field magnet core. The armatures 37 are provided with shafts 56 that are carried by the bearing housings 32 which are disposed in the side frame recesses 30 and are secured by bolts to said side frames 6.

It should be noted that no upper frame members are provided for the driving motors 4: and 5, as is customary, and that the magnetizable cores 36 are uncovered and exposed. The ends of the motors are covered by detachable casings 57 of sheet material which are suitably secured to the end plates 40 of the cores 36.

Both ends of the armature shafts 56 are provided with pinions 8 which mesh with the gears 9 that are carried by a countershaft 58. The countershaft 58 is located midway between the driving axles 27 and substantially on a level therewith, and is disposed within a pedestal opening 59 in which suitable bearing blocks 60 are positioned. The respective ends of the countershaft 58 are provided with cranks 62 which have connections with side rods 10 for the purpose of transmittin the driving effort of the motors to the drlving wheels 7.

A plurality of upwardly projecting members 65 are preferably integrally associated with the respective side frames 6 directly nausea to a height substantially above the motors 4 and 5 and are rigidly connected by a crosstie 67, the ends of which are provided with openings into which the upper ends of the members project and are fitted. The cross-tie 67 is held in place rigidly by means of suitable, removable keys 68 which cooperate with said cross-tie and with the upper ends of the projecting members 65. The cross-tie 67 is preferabl permanently pivotally associated with the center pin 19.

When it is desired tooverhaul'one of the motors, the keys 68 are withdrawn, after which the locomotive body 1 may be raised, by means of a crane or other suitable apparatus, whereby the cross-tie 67 is detached from the projecting members 65 of the side frames 6. The driving truck may then be run out from under the locomotive body and the motors overhauled from above, after having first lowered the countershaft 58 and Z associated genre 9. It is, of'course, not essential that the crosstie 6-? be detachable from the members 65 and permanently associated with the center pin 19. If desired, thecross-tie 67 may be integral withthe Side frames 6 or permanently secured thereto, and separable from the centerpinlt), in which case, greater difficulty is encountered in overhauling the motors, inasmuch as it would then be impossible .to raise the motors directly from.

theirsents, and would necessitate an angular overhauling thereof.

It will, of course, be understood that, in the center-pin structure which is employed for the other driving truck, provision must be made for a slight longitudinal movement as is common practice with locomotives o the articulated type. In'order to secure this relative movement, the openings inthe ends o= the cross+tie 67 are made slightly longer thanthe"longitudinal dimension of the up wardly projecting members 65, although;

other suitable means may be employed.

By reason of the arrangement and location of'parts described, a. particularly powerful locomotive is Secured which is provided with relatively large driving motors that are rigidly carried by the side frames,

the latter being spring-supported upon the driiging axles. Furthermore, the motors are; located-within the rigid wheel base, and the number of driving gears is reduced to ai minimnnnwhile the elevated cross-tie and center-pin structure provides ample space fordriving motors of a capacity which could notiotherwise be employed.

Qbvio'usly, I do not wish to be restricted to the specific structural details and relation: shipl of pants shown and described, as iti'is evident that the benefits of my invention may be secured by other structures differing to a greater or lessextont, but embodying the principles-of my invention. 1, therefore, desire that only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention:

1. In a vehicle, the combination with sideframes having correspondingly disposed upwardly projectingmembers associated therewith, and a removable cross-tie joiningvthe upper ends of said members, of a centering device associated with said cross-tiei 2. In a vehicle, thecombinatio l with side frames having correspondingly disposed-upwardly projectingmembers associated therewith, and removable means for joining said upwardly projecting members, ofcentering means associated with said joining means.

3. In a vehicle, the combination with side frames having correspondingly disposed upwardly projecting members associated therewith, and a cross member removably securedto the upper ends ofsaid upwardly projects ingim'embers, of a centerspincarrfied bysaid cross member. 7

i. In a vehicle, the combination with side frames having correspondingly disposedup wardly projecting members associated therewith, and a cross'member cooperatively engaging the upper ends of said upwardly projecting members, of a center-pin associated with said cross member, and detachable means for securing saidcross member to said projectingsmembe'rs. r

5. In-a vehicleg this combination with side: frames having correspondingly disposed up.- wardly projecting members associated therewith and a cross-member having iend openings to receive the upper ends of said upwardly projecting members, of locking means for securing said cross member to said upwardly projecting members and a centering device associated with said cross member. i V j 6. In a vehicle havingtwo pairs of driv. 1 ing, wheels, the combination with a body, 7 a 1 running-gearihaving side frames, and a plurality'oi' motors carried by SBJl(l':SldE frames and disposed between the pairs ofdrivin'g wheels, of means associatedavith said side frames and disposed between and'below the upper portions of said motors for 'pivotally connecting said running gear to said body.

I. In aivehicle having two pairs of driv ing5wheels, the combinatien'with 8119 6-3 7 a running-gear haying-side:tramesga-nd a plurality of motors ci 'i iied,hysaid side frames and disposed between the pairs- "ofdriving wheels, of across member disposcd between and below the upper portions of said motors andvsecured tosaid side frames, a pi-votal driving connection cotiperating with said body and said cross member. g

8. In a vehicle having two pairs of driving wheels, the combination with a body, a running-gear having side frames, and a plurality of motors carried by said side frames and disposed between the pairs of driving wheels, of upwardly projecting members associated with said side frames and disposed between said motors, a cross-member secured to the upper ends of said projecting members and disposed below the upper portions of said motors, and means coiiperating with said cross-member for associating said body with said running gear.

5). In a vehicle the combination with a body having a raised floor portion thereof of frictional width, and a driving truck comprising side frames, a pair'of motors carried thereby, two sets of driving wheels and means for mechanically connecting said motors to both sets of driving wheels, of an elevated cross member associated with said side frames and disposed below the upper portions of said motors, and means coiiperating with'said cross member and said raised floor portion of said body for providing a pivotal driving connection between said body and said truck.

10. In a vehicle, the combination with a pluralit of side frames having oppositely dispose recesses therein, of a motor frame set into said recesses and rigidly secured to said side frames.

11. In a vehicle, the combination with a plurality of side frames having oppositely disposed recesses therein, of a combined cross-tie and motor frame fitted into said frame recesses and rigidly fastened to said side frames.

12. In a vehicle, the'combination with a plurality of side frames having correspondingly disposed recesses in the inner sides thereof, of a motor frame having end portions adapted to fit into said recesses, and means for rigidly securing said motor frame to said side frames.

13. In a vehicle, the combination with a plurality ofside frames having correspondingly disposed recesses in'the inner sides thereof, of a motor frame having end portions adapted to fit into said recesses and bolts for rigidly securing said motor frame between said side frames to constitute a permanent cross-tie.

14. In a vehicle, the combination with a plurality of side frames having correspond ingly disposed semicircular recesses therein, of a motor frame disposed between said side frames and having semi-cylindrical ends fitted into said recesses, and means for securing said motor frame to said side frames.

15. In a vehicle, the combination with a plurality of side frames having'correspondingly disposed recesses therein, of a motor frame having its ends fitted into said recesses, said motor frame being located entirely below the upper surface of said side frames, and means for rigidly securing said motor frame to said side frames.

16. In a vehicle, the combination with a plurality of side frames, of a detachable cross-tie rigidly secured between said side frames, and a removable magnetizable motor core cylindrical in form secured directly to said cross-tie.

17. In a vehicle, the combination with a plurality of side frames, of a cross-tie rigidly secured between said side frames, a stationary magnetizable field structure carried y said cross-tie, and a rotatable armature carried by said side frames.

18. In a vehicle, the combination with a plurality of side frames, of a substantially semi-cylindrical cross-tie rigidly secured between said side-frames, and a laminated magnetizable core supported by said crosstie.

19. In a vehicle, the combination with a plurality of side frames, of a cross-tie rigidly secured between said side-frames, a laminated magnetizable core supported by said cross-tie, a rotatable armature cooperated with said core, and means associated with said side frames for supporting said armature. V

20.'I11 a vehicle, the combination with a plurality of side frames having correspondingly disposed recesses therein, of a stationary motor frame having ends fitted into one set of said recesses and secured to said side frames, a motor armature, and bearing members therefor fitted into the other set of recesses and secured to said side frames.

21. In a vehicle, the combination with a plurality of side frames having correspondingly disposed concentric recesses therein, of a stationary motor frame having semi-cylindrical end projections and a concentric intermediate upwardly concave portion, said end projections being adapted to be seated in one set of the recesses in said side frames, a

cylindrical magnetizable core member disposed in said concave portion of said motor frame, bearing housings seated in the other set of side frame recesses, and an armature mounted in said housings.

22. Ina vehicle, the combination with a plurality of side frames severally having a semi-circular recess in its upper edge and a larger concentric semi-circular recess in the inner side thereof, a motor frame having semi-cylindrical ends seated in said larger side frame recesses, and means for rigidly securing said motor frame to said side frames, of circular bearing housing adapted to rest in the recesses in the upper edges of said side frames, means for securing said housings to said side frames, and a rotatable motor armature mounted in said bearing housin s. r

n a vehicle, the combination with a 1 plurality of side frames having correspondingly disposed semi-circular recesses in their upper edges and larger concentric semi-circular recesses in the inner sides of said frames, a motor f'ame having semi-cylindrical ends seated in said larger recesses, and means for rigidly securing said motor to said side frames, of a separable magnetizable core seated in said motor frame in coaxial relation with said concentric side frame recesses, a motor armature within said core, and detachable b Haring members seated in the recesses in the upper edge of said side frames for supporting said arma ture in coaxial relation with said core.

24. In a vehicle, the combination with a plurality of side frames and a half-frame member rigidly secured thereto, of a separable magnetizable core seated in said memher, and means cooperating with said core and said member for rigidly clamping said core in position.

25. In a vehicle, the combination with a plurality of side frames and a member rigidly secured thereto, of a separable magneti-zable core seated in said member, and means cooperating with said core and the upper surface of said member for clamping said core rigidly in position.

26. In a vehicle, the combination with a body having a center-pin associated therewith, of a truck embodying side frames, a detachable cross member secured to said frames, and means for locking said cross member against vertical movement relative to said frames, said cross member being per manently associated with said center pin.

27. In a vehicle, the combination with a body, a bar, and a center-pin permanently pivotally associated with said bar and said body, of a truck embodying side frames, means for locking said bar against vertical Copies of this patent may be obtained for five cents each, by addressing the movement relative to said frames, and means for dctachahlv securing said bar to said side frames. a

In a vehicle, the combination with a body, a plurality of articulated driving trucks each en'zbodying side frames, aplurality of pairs of driving Wheels and a plurality of mechanically connected motors mounted thereon and. disposed between the pairs of driving wheels, of means associated with the side framcs of each truck and disposed below the upper portions of said motor for pivotally connecting said trucks to said body, one of said trucks having relative longitudinal movement with respect to said body.

2!). The combination with a plurality of side-by-side half-frame members having seats therein, and magnetizable cores disposed in said seats, of a single member c0- operating in common with said cores for rigidly positioning said cores in said frame members.

30. The combination with a twin halfframe structure having a pair of seats therein, and magnetizable cores disposed in said seats, of means cooperating in common with said cores for rigidly positioning said cores.

31. The combination with a half-frame member having a seat therein and a removable magnetizable core disposed therein and secured thereto, of a casing cooperating with said core and said frame member for lnclosing one end of said frame.

In testimony whereof, I have hereunto subscribed my name this 29th day of April, 1914.

GEORGE M. EATON.

Witnesses:

G. R. IRWIN, B. B. HINES.

Commissioner of Patents,

Images