US1317296A - Electric locomotive - Google Patents

Description

G. H. F. HOLY.

ELECTRIC LOCOMOTIVES.

APPLICATION FILED AUGIO. 1915.

l, 3 1 7, 296, Patented Sept. 30, 1919.

Fig. AZ.

INVENTOR George H. FHoiy.

W 5; 5 8 2 ATTEY Tm: COLUMBIA PLANUGRAPH 50-, WASHINGTON, D. c.

ENTTED STATES PATENT OFFICE.

GEORGE E. F. HOLY, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

nnnc'rnro LOCOMOTIVE.

Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed August 10, 1915. Serial No. 44,776.

To all whom it may concern:

Be it known that I, GEORGE H. F. HOLY, 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 Electric Locomotives, of which the following is a specification.

My invention relates to electric locomotives, and it has particular reference to the driving mechanisms therefor.

One of the objects of my invention is to provide a locomotive in which the driving motor is mounted upon a cab which is spring-supported upon the running gear, and to provide a combination of driving rods having a lost-motion connection to the driving motor, said rods being disposed in substantially the same vertical plane.

Another object of my invention is to provide a locomotive of the above-indicated character which shall be simple and rugged in construction, which shall have a relatively high center of gravity by reason of the location of the driving motor, and which, moreover, shall be adapted to transmit the driving effort thereof to the driving wheels either directly through inclined driving rods or indirectly through jack-shafts and side rods.

More specifically, it is an object of my invention to provide a simplified and improved rod drive, the arrangement of parts of which are such as to avoid the use of the usual stepped construction of crank pins and, moreover, to permit the use of identical jack-shafts and wheels and axles.

If a driving unit is mounted upon a spring-borne cab and a rod drive is employed, it becomes necessary to provide a certain degree of vertical movement between the driving mechanism nd the driving metor in order to care for the movement of the cab upon the springs. Moreover, such a lost motion connection is desirable when the driving motor is mounted directly upon the running gear and jack shafts are employed, for the reason that it is practically impossible, with the present-day commercial man ufacturing methods, to accurately locate the several shafts or axles which are to be connected by the driving rods and, therefore, the rods are placed under unnecessary and undesirable stress. Therefore it is practically essential to provide a certain amount of lost motion even with this type of motor mounting and drive.

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 an electric locomotive embodying a driving mechanism constructed in accordance with my invention; Fig. 2 is a view, partially in plan and partially in sec tron, of the upperends of a portion of the driving rods and their connection to the driving unit; Fig. 3 is a similar view of the side rods, and Fig. 4c is a view, similar to Fig. 1, of a modified form of my invention.

Referring to Fig. 1, the apparatus shown comprises a running gear 1 having a plurality of sets of driving wheels 2, 3 and 4:, a cab 5 resiliently carried upon the running gear 1 through springs 6, an electric driving motor 7 mounted within the cab, and a driving mechanism 8 comprising a plurality of inclined driving rods 9 and 10 and a plurality of side rods 11 and} 12 by means of which the driving effort of the motor 7 is transmitted to the driving wheels. 9

The running gear 1 embodies si'de frames 15 of suitable construction having pedestal openings 16, 17 and 18 to receive journal boxes 19, 20 and 21 that respectively surround the axles 22, 23 and 2 1, in accordance with the usual practice.

The cab 5 is carried upon the springs 6 which are illustrated as of the elliptic type, although any form of spring support may be used, and said springs rest upon the journal boxes 19 and 21, respectively.

The driving motor 7 is of large capacity and is mounted upon the floor of the cab 5 and directly above the middle set of driving wheels 3. The motor may be of any construction known in the art and its shaft 27 is provided with. a plurality of crank arms 28 carrying crank pins 29, said crank arms and pins being located on the respective ends of the motor shaft 27, although only the driving mechanism of one side of the locomotive is illustrated.

The upper ends of the driving rods 9 and 10 are both associated with the crank pins 29, and the lower ends thereof have pivotal connections to the respective crank pins 31 and 32 that are severally carried by the crank arms 33and 34 of the respective sets of driving wheels 2 and 4.

The driving rod 10 is provided, at its upper end, with an integral rectangular yoke member 36 and a pair of integral laterally projecting extensions 37. The yoke 36 is adapted to receive a bearing block 40 which is carried by theerank pin 29 and is adapted for a slight vertical movement with respect to the yoke portion. The lower end of the rod 10 is also provided with a plurality of integral lateral extensions 38 for a purpose to be hereinafter set forth.

The driving rod 9 is disposed in the same vertical plane as the rodlO, and its upper end is interposed between the extensions 37 and pivotally secured thereto by a pin 41.

The lower end of the rod 9 is provided with a plurality of lateral and corresponding extensions 43, between which one end of the connecting side rod 11 is disposed and pivotally secured by a pin 44. The other end of the connecting side rod 11 has a pivotal connection with a crank pin 45 that is carried by a crank arm 46 associated with the set of driving wheels 3, while the side rod 11 projects beyond said crank pin and is provided with two extensions or arms 47 that straddle one end of the side rod 12 and are pivotally secured thereto by means of a pin 48. The other end of the connecting side rod 12 is interposed between the extensions 38 of the lower end of the driving rod 10 and is pivoted thereto by means of a pin 49.

By this construction of the driving and side rod mechanism, the several rods are located in the same vertical plane, whereby lateral space is economized and the use of stepped crank pins avoided. Moreover, the driving effort of themotor 7 is transmitted directly to the driving wheels 2, 3 and 4 through the driving rods 9 and 10 and the side rods 11 and 12, while the yoke connection between the upper end of the rod 10 and the crank pin 29 permits of a slight relative vertical movement'to care for the vibrations of the cab and the inaccuracies of construction.

Reference may now be had to Fig. 4, in

which the electric locomotive shown differs somewhat in the arrangement of driving wheels and driving mechanism and is provided with a plurality of jackshafts 53 and 54 that are carried in bearings 55 and 56 which are disposed in pedestal openings 57 and 58 that are formed, in the usual manner, in the side frames 15. The opposite ends of the respective jackshafts are provided with crank disks 59 and 60 which are severally provided with crank pins 61 and 62.

The driving motor 7 is mounted directly upon the runnmg gear 1 instead of being carried by the cab, which may or may not be spring-borne, and the driving effort thereof is transmitted to the jackshafts 53 and 54 and to the intermediate set of driving wheels 3 through the agency of driving rods 9 and 10 and side rods 11 and 12, in the same general manner as set forth in con nection with the locomotive shown in Fig. 1, a similar lost-motion yoke connection 3640 being provided. a

The outer sets of driving wheels 2 and 3 are mechanically associated with extensions 64 and 65 of the respective driving rods 9 and 10 by means of side rods 66 and .67 which are disposed in the same vertical plane with the other rods 9, 10, 11 and 12 and have their outer ends respectively connected to the crank arms 33 and 34 which are associated with the sets of wheels 2 and 4, respectively.

Thus, by means of the lost-motion rod drive mechanism set forth, a free and smooth operation is secured, which is ob tained even though there be slight inaccuracies in the construction of the several parts and in the location of the several rotatable shafts that are mechanically connected.

Obviously, my invention is not restricted to the specific structural details and arrangement and location of parts hereinbefore set forth, as modifications therein may be effected without departing from the spirit and scope of my invention, and I desire, therefore, that only such limitations shall be imposed as are indicated is the appended claims.

I claim as my invention:

1. In a locomotive, the combination with a running-gear comprising a plurality of sets of driving wheels having crank arms associated therewith, a cab spring-supported upon said running-gear, and a driving unit carried by said cab and having a crank arm, of a mechanical driving connection between the crank arm of the driving unit and the crank arms of the driving wheels comprising a plurality of downwardly diverging rods, and means associated therewith for permitting relative vertical movements between said driving unit and said mechanical the driving wheels in accordance with the movements of said spring-supported cab.

3. In a locomotive, the combination with a running-gear comprising a plurality of sets of driving wheels having crank arms associated therewith, a cab spring-supported upon said running-gear, and a driving unit carried by said cab and having a crank arm, of a plurality of flexibly connected clownwardly divergent driving rods disposed in the same vertical plane and joining the crank arm of the driving unit with the crank arms of the driving wheels, and means as sociated with one of said driving rods for permitting a vertical lost-motion connection with the driving unit crank arm in accordance with the movements of said spring-supported cab.

4c. In an electric locomotive, the combination with a running-gear comprising three sets of driving wheels each provided with a crank arm, a cab spring-supported upon said running-gear, and an electric driving unit carried by said cab directly above the middle set of driving wheels and having a crank arm, of a plurality of inclined driving rods having a lost-motion connection with the driving-unit crank arm and connected to the crank arms of the outer sets of driving wheels, and a plurality of side rods operatively connecting the lower ends of the respective driving rods with the crank arm of the middle set of driving wheels.

5. In an electric locomotive, the combination with a running-gear comprising three sets of driving wheels each provided with a crank arm, a cab spring-supported upon said running-gear, and an electric driving unit carried by said cab directly above the middle set of driving wheels and having a crank arm, of a plurality of driving rods having a lost-motion connection with the drivingunit crank arm for effecting a driving connection between said crank arm and the crank arms of the outer sets of driving wheels, and a plurality of side rods pivotally associated with the ends of the respective driving rods and connected to the crank arm of the middle set of driving wheels, said driving rods and side rods being disposed in the same vertical plane.

6. In an electric locomotive, the combination with a running-gear comprising a plurality of sets of driving wheels, a cab springsupported upon said running-gear, and an electric driving unit carried by said cab, of crank arms associated with the driving unit and the sets of driving wheels, means comprising a plurality of flexibly joined rods for connecting the crank arms of the driving unit to the respective crank arms of the driving wheels, and means for permitting a slight vertical movement between said drivfive cents ing rods and the crank arm of said driving unit in accordance with the movement of said springsupported cab.

7. In an electric locomotive, the comb-ination with a running-gear comprising a pair of rotatable shafts, and an electric driving motor disposed above said shafts and mid way between them, of a driving rod between the driving motor and one of the shafts, said rod having a lost-motion connection with said motor and having a laterallydisposed extension, and a. second driving rod pivotally secured to said extension and to the other driving shaft.

8. In an electric locomotive, the combination with a running-gear comprising a pair of rotatable shafts, and an electric driving motor disposed above said shafts and midway between them, of a crank arm and crank pin associated with the driving motor, a bearing block carried by said pin, a driving rod connected to one of said rotatable shafts and having its upper end provided with a yoke to receive said bearing block and with a lateral extension, and a second driving rod connected to said extension and to the remaining rotatable shaft.

9. In an electric locomotive, the combination with a running-gearcomprising a plurality of sets of driving wheels, a plurality of jackshafts, and a driving unit mounted upon said running-gear, of a plurality of driving rods having a lost-motion connection with the driving unit and mechanically connected to the jack-shafts, and a plurality of side rods between said jack-shafts and the sets of driving wheels.

10. In an electric locomotive, the combination with a running-gear comprising a plurality of sets of driving wheels, a plurality of jackshafts disposed intermediate said sets of wheels, and an electric motor mounted upon said running-gear, of a plurality of driving rod-s having a vertical lost-motion connection with said driving motor and connected to the respective jackshafts, and a plurality of side rods associated with the driving rods and connected to the driving wheels, said driving rods and side rods being disposed in the same vertical plane.

1.1. In an electric locomotive, the combination with a driving unit having a crank pin attached thereto and a plurality of sets of driving wheels, of two driving rods having a lost-motion connection to said crank pin, two jack shafts joined to said driving rods and side rods for connecting the driving wheels to said jack shafts.

In testimony whereof, I have hereunto subscribed my name this 31st day of July, 1915.

GEORGE H. F. HOLY.

each, by addressing the Commissioner of Patents.

Washington, D. 0.

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