US1613710A - Electric locomotive - Google Patents

Description

Jan. 11, 1927.

N. D. LEVIN ELECTRIC LOCOMOTIVE Filed Dec. 5, 1921 l/VVENTOR A TTORNE Y Patented Jan. 11, 1927.

UNITED STATES PATENT oFFicE.

'NILS D. LEVIN, OF COLUMBU S, OHIO, ASSIGNOR TO THE JEFFREY MANUFACTURIN COMPANY, OF. COLUMBUS, OHIO, A CORPORATION OF OHIO.

ELECTRIC LOCOMOTIVE.

Application filed December 9, 1921. Serial No. 519,706.

The present invention relates to certain new and useful improvements in electric locomotives, and especially to locomotives of the class in which the driving motors are suspended upon the axles of the driving wheels.

It is the especial object of this invention to provide, in a locomotive of the class described, means for transferring the lateral thrust of the motor frames, due to the inertia of. the parts, as the machine travels around the curves of the track, to the side frames of the locomotive independently of the axle journal boxes.

This and other objects will appear in the following specification, reference being'had to the accompanying drawings in which Fig. l is a side elevation of alocomotive of the type to which my invention relates.

Fig. 2 is a transverse sectionalview taken substantiallyalong the line II II of Fig. 1, parts being left in elevation for clearness of illustration.

Fig. 3 is a fragmentary plan .view of the machine illustrated in Figs. 1 and 2.

Like numerals refer to similar parts in the several figures.

In the drawings the numeral 1 indicates the side frames of the locomotive which are connectedtogether by the end frames 2 to form a rigid frame in the manner well understood in locomotive practice. Vertically slidable in guideways 3 of the side frames are journal boxes 4: which are resiliently connected to the side frames by the compression springs 5. Journaled in the boxes 4' are axles 6 to which are fixed the traction wheels 7 which support the locomotive upon the track rails 8. The wheels 7 are provided with hubs 9 adapted to engage the ends of the journal boxes 4 to prevent longitudinal movement of the axles 6 relative to the side frames 1. Mounted within the locomotive frame are the electric motors 10 which are arranged to drive the axles 6 through trains of gearing enclosed within the gear cases 11. As such gearing is well understood in the art, and as it forms no part of the present invention, further description and illustra tion of it is not thought to be required at this time. Formed on one side of the frame of each of the motors 10 are journal bearings 12 which bear upon the axles 6 to support the motors in operative relation withthe axles.

Lugs 13 formed'on the motor frames 10 on the side opposite the bearings 12, engage the cross bars or bolsters 14, extending between the side frames 1, to prevent the rotation of the motor frames about the axles and hold the motor frames from transverse movement at their forward ends. WVhen a locomotive such as is above described, travels around a curve of the track 8 the inertia of the parts tends to cause the motors 10 to move longitudinally of the axles 6, thereby causing undesirable friction 7 between the ends of the journal bearings 12' and thejournalbearings 4, or the thrust collars 15 which are attached to the axles 6. To avoid such undesirable friction, and toprevent the con sequent wear upon the parts, I have provided the links 16 which are pivotally at tached at one end to the side frames 1 bythe pivot brackets 17 and bolts 18, and at their other ends .t0 the motor frames 10 by the pivot bolts 19.. Theproportions and arrangement of these parts is such that the motor frame 10 is free to move vertically with the axle 6, butis restrained by the link 16 from movement transversely of the locomotive.

lVith this construction, it will be seen that while the desired vertical play'of the motor frame with the axle is not interfered with, yet transverse movement and lateral movement of the motor frame is prevented, the lugs 13 engaging the cross bars 14, preventing any transverse movement of the forward end, while the link 16 prevents any lateral movement of the rear end of the motor frame.

Preferably, and as here shown, the link 16, which prevents the axle supported end of said motor from giving a lateral movement, will be placed. substantially in alignment with the axle 6, so that the resistance to lateral movement will be substantially in the line of the thrust.

What I claim is- 1. In a locomotive of the class described, the combination of a frame, guideways on said frame, journal boxes resiliently mounted on said guideways and vertically movable thereon, an axle journaled in said boxes, traction wheels on said axle, a motor mounted on said axle and frame, and means to prevent lateral movement of the axle engaging end of said motor relative to said frame while permitting relative vertical movement.

2. In a locomotive of the class described,

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the combination of a frame, guideways on said frame, journal boxes resiliently mounted on said guideways and vertically movable thereon, an axle journaled in said boxes, traction wheels on said axle, a motor mounted on said axle and frame, and a vertically flexible connection to prevent lateral move ment of the axle engaging end of said motor relative to said frame While permitting rela tive vertical movement.

3. In a locomotive of the class described, the combination of a frame, guideWays on said frame, journal boxes resiliently mounted on said guideways and vertically movable thereon, an axle 'journaled in said boxes, traction Wheels on said axle, a motor mounted on said axle and frame, and a pivotal connecting link between said motor and said frame to prevent lateral movement of the axle engaging end of said motor relative to said frame While permitting relative vertical movement.

4. In a locomotive of the class described, the combination of a supporting frame, a motor mounted in said frame, means connecting one end of said motor to said frame to prevent relative transverse movement, and flexible means connecting the other end of said motor to said frame to prevent rela tive transverse movement but permit rela-' tive vertical movement.

5. In a locomotive of the class described, the combination of a supporting frame, a motor mounted in said frame, means connecting one end of said motor-to'said frame to prevent relative transverse movement, and apivotal link connecting-the other end (3. In a locomotive of the class described,

the combination of a frame, a vertically movable Wheeled axle mounted in said frame, a motor mounted on and movable vertically with said axle, and connecting means between said motor and said frame substantially in alignment with said axle to prevent lateral movement of said motor relative to said frame While permitting relative vertical movement 7. In a locomotive of the class described, the combination of a frame, a vertically n'iovable Wheeled axle mounted in said frame, a motor mounted on and movable vertically with said axle, and flexible connecting means between said motor and said frame siiostantially in alignment with said axle to prevent lateral movement of said motor relat to said frame \vhile permitting relative vertical movement. 7

d. In a locomotive of the class described, the combination of a frame, a vertically movable wheeled axle mounted in said frame, a motor mounted on and movable vertically With said axle, and a pivotal link connecting said motor and said frame sat-- stan i ally in alignment With said axle to prevent lateral movement of said motor relative to said frame While permitting relative vertical movement.

In testimony whereof, I affix my signature.

NiLsD. Levin.

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