US744303A

US744303A - Electric locomotive.

Info

Publication number: US744303A
Application number: US16626803A
Authority: US
Inventors: William Dalton; Francis J Cole
Original assignee: American Locomotive Co
Current assignee: American Locomotive Co
Priority date: 1903-07-20
Filing date: 1903-07-20
Publication date: 1903-11-17
Anticipated expiration: 1920-11-17

Description

110.744.303. PATENTBD Nov. 17, 1903.

W. DALTCN C RJ. COLE.

ELECTRIC LCCCMCTIVE..

APPLICATION FILED JULY 20,11903. N0 IODEL. I. 2 SHEETS-SHEET 1.

| y L I .lnllll--illlllmln` iulm-iillllmm 'im inni'mwuwumn /0 l Cf M4 PATENTED'NOV. 17, l1903. 'W'. DALTON 6r. E. J. COLE.

ELECTRIC LOCOMOTIVE.

APPLICATION FILED JULY 2o, 190s.

2 SHEETS-SHEET 2.

N0 MODEL.

1j: l WITNES E ES- UNITED STATES Patented. November 1'7, 1903.

PATENT OEEICE.

WILLIAM DALTON AND FRANCIS J. COLE, OF SCHENECTADY, N-EW YORK, i

ASSIGNORS TO AMERICAN LOCOMOTIVE COMPANY, OF NEW YORK, N. Y.,

A CORPORATION ACF NEW YORK.

ELECTRIC LOCOMOTIVE.

SPECIFICATION' forming part of Letters Patent No. I(445303, dated November 17, 1903.

Application filed July 20, 1903.

l'o all whom it may concern,.-

Be it known that we, WILLIAM DAL'roN and FRANCIS J. COLE, both of Schenectady, in the county of Schenectady and State of New York,

have jointly invented a certain new and-useful Improvement in Electric Locomotives, of

which improvement the following is a speciv zio necessitating the application of a special or independent guiding-truck for the purpose.

The improvement claimed is hereinafter. fully set forth.

In the accompanying drawings, Figure 1 is 2 5 a view, partly in elevation and partly in vertical longitudinal central section, of an electric locomotive, illustrating an application of ourinvention, the gearing being indicated by broken circles; Fig. 2, a plan or top view 3oy with the cab and spring-rigging removed;

Fig. 3, a horizontal section, on an enlarged scale, through one of the pedestals of an end driving-axle with the journal-box and bearing-plate shown in plan'view; Fig. 4., a front View in elevation of the same; Fig. 5, a vertical central section through the same; Fig. 6, a plan view, on a further enlarged scale, of a bearing-plate; Fig. 7, a side view of the same; and Fig. 8, a partial transverse section 4.o through the locomotive, showing the connections of the cab and frame.

Our invention is herein exemplified as applied in an electric locomotive, the main supporting-frame of which comprises two continuous side frame members 1, in or on which are formed or xed jaws or pedestals v1e for the reception of the journal-boxes 3 of'a plu" rality of driving-axles 2 2, in this instance four in number, upon which the driving- I wheels 4. are secured, and a longitudinal cen- The object of our inventionis to provide ticeto guide the locomotive around curves..

Serial No. 166,268. (Nomaden 5o ter sill 1f,which may be, as shown, in the form of a channel-beam, together with transverse buier-beams l, to which the side frame members and center sill are connected at theirends. The frame is supported upon the driving axles through the intermediation of springs 5, which rest upon saddles on the 'journal-boxes 3 and are connected to the frame by spring-hangers 6, as in ordinary steam locomotive practice. The detailed construction of the spring arrangement does not form part of our present invention, and the same is not, therefore, herein at length set forth.

Power for the rotation of the driving-axles is applied thereto from electric motors. 7 of any suitable and preferred construction, the motors Abeing located between the side frame members and the frame of each motor being journaled and supported at one end upon the driving-axle which it rotates and at the other upon the frame. Each of the motor-shafts 9 has fixed upon it a spur-pinion 10, the teeth -of which engage those of a corresponding gear 1l on the aXle which is driven by the motor. The ends of the motor-frames which are farther from Itheir respective drivingaxles are provided with noses or bearingpieces 7a, which are supported on brackets or hangers 1g, secured to the center sill lfof the locomotive-frame.

It is well recognized in railroad practice thatV in locomotives having a comparatively long rigid wheel-base there is a tendency of the iianges of the leading driving-wheels to mount the rails in passing curves of short radius and to' thereby cause derailment, and independent leading-trucks of either two or four wheels are generally employed in prac- In the ordinary radial truck the bearings are inside the wheels and the movements of the truck are controlled by radius-bars running from the transverse plane of the journalboxes back to a fixed center pin. When the journals are outside of the wheels, it becomes necessary either to use radius-bars of complicated structure reaching'around the wheels or radial boxes. In order to obviate the necessity for using independent leading and trailing trucks, as Well as to avoid the complications which occur in radial boxes of comparatively short radius and avoid increase of wheel-base by the use of bars running from center to outside journal-boxes, we provide means whereby the frames of the motors of the end axles of the locomotive are supported on and connected to the locomotive-frame in such manner as to permit of radial movement of said axles in passing curves, thereby not only obtaining the useful eect of a special radial truck, but also avoiding the use of radius-bars. To this end-the frames of the motors 7 of the end driving-axles 2"L of the lo-l comotive are provided onv their sides farther from said axles with noses or bearing-pieces 7, which are supported on brackets or hangers 1g, secured to the center sill 1f of the frame, and are coupled thereto by vertical center pins 7b, the axle-boxes 3 being thereby connected to the frame with the capacity of movement in a horizontal plane in arcs, the radius of which is equal to the distance from the axis of the bearing of the frame upon the journal-box to the axis of the center pin. The end driving axles 2a are therefore adapted to move laterally in the same manner as if fitted in radial boxes or it' mounted in a truck provided with radius-bars, while the use of either of these special constructions is rendered unnecessary, as their function is performed by the motor-frames, which are at the same time as eectively supported as in the constructions heretofore employed. The center pins 7b are made loose enough to admit of the vertical movement of the frame relatively to the axles, but are fitted up sufficiently closely to maintain the axles in their proper positions in a horizontal plane.

The journal-boxes 3 of the end drivingaxles 2a are without side bearings, and each of them is free to move in a horizontal plane in the open space within asquare guide-frame 3, which is fitted between and bears laterally on the shoes lh of the pedestal-jaws le. The spring-saddles 5 rest upon the tops of the frames 3, which are fitted to move vertically on the shoes lh in the manner of an ordinary journal-alex, and through their long vertical bearing-surfaces serve to obviate the tendency of the tipping of the boxes around the base of the spring-band, which would otherwise be exerted when the journal is swung out of the center line of the spring. In order to return the end driving-axles to their normal positions at right angles to the frame members, transverse centering-springs 25 are tted in boxes or cases 25, which are secured to the center sill lf above and adjacent to the sides of the motor-frames which adjoin the end axles. The springs 25 abut at their ends against followers 26, which in turn abut against the ends of the cases 25, Thrustrods 27, which are coupled to lugs 7, fixed on the motor-frames, abut against the followers 26, with the result that the movement of the motor-frames in either direction in the swinging of the end driving-axles in traversing curves is resisted by said springs, which will be compressed thereby and will return the frames and axles to normal central position `when the locomotive passes from a curved to a straight portion of the track.

The guide-frames 3", and through them the main frame members, are supportedon the journal-boxes 3 through the intermediation of cylindrical bearing-plates 3b, which are fitted and free to rotate about their axes in correspondingly-bored sockets in the top bars of the frames 3fL and are provided with double wedges or inclined faces 3c on their lower sides, which abut against similar wedge projections 3d on the top of the journal-box 3. The double Wedge bearing on the frames on the journalboxes acts in unison with the centering-spring before described to return the boxes to their normal central position after their movement therefrom in either direction incident to that of the axles in traversing curves. v

The frame of the locomotive is transversely braced and stitened, and the cab 8 supported in proper relation thereto by cross-ties 1i, which project vertically above and are secured by plates lk to the center sill 1t of the frame, and may also be connected by plates or bars lm to the side frame members l. The ioor 8a of the cab is secured to the cross-ties in any suitable manner, the upward extension ot' the cross-ties above the center still enabling the oor to be located at the proper level desired.

It will be seen that the means afforded by our invention for enabling an electric locomotive to readily and safely pass around curves are conveniently applicable in the type to which the invention relates and provide the substantial equivalent of aguidingtruck and attain its advantages without involving the additional expense and compliplication of a special structure independent of the driving-wheels.

We claim as our invention and desire to secure by Letters Patentl. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle j ournaled in bearings which are movable horizontally in said supporting-frame, and an electric-motor frame by which the drivingaxle is pivotally coupled to the supportingfralne.

2. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle journaled in bearings which are movable horizontally in said supporting-frame, an electric-motor frame which is journaled at one end on the driving-axle, and a center pin coupling the motor-frame, at its opposite end, to the main supporting-frame.

3. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle journaled in bearings which are movable IOG IIO

axle `is pivotally coupled tothe supportingframe, and means for returning the motorframe and driving-axle to normal central position after displacement therefrom.

4. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle j ournaled in bearings which are movable horizontally inA said supporting frame, an electric motor having a frame by which the driving-axle is pivotally coupled to the supporting-frame, and gearing through which the driving-axle is rotated by the electric' motor.

5. In an electric locomotive, the combination of a main supporting-frame, anintermef.

diate driving-axle journaled in rigid bearings therein, an electric motor by which said intermediate driving-axle is rotated, end drivingaxles, each journaled in bearings which are movable horizontally in the main supportinglframe, electric motors each having a frame by which one of the end driving axles is pivotally coupled to the main supportingframe, and gearing through which each end driving-axle is rotated by the adjacent electric motor.

6. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle j o urnaled in bearin gs which are movable horizontally in said supporting-frame,an electric-motor frame which is journaled at one end on the driving-axle, a nose or bearing piece xed on the opposite end of the motorframe, a bracket or hanger fixed to the main supporting-frame and supporting said nose, and a center pin pivotally connecting said nose and bracket 7. In an electric locomotive, the combination of a main supporting-frame, a drivingaxle journaled in bearings which are movable horizontally in said snpporting-frame,an electric-motor frame by which the driving-axle is pivotally coupled tothe supporting-frame, a box or casing fixed to the supporting-frame, a centering-spring in said casing,transverselymovable followers interposed between said spring and the ends of the casing, and thrustrods connected to the motor-frame and abutlting on said followers.

8. In an electric locomotive, the combina',- tion of two main supporting-frame members, guide-frames fitted to traverse vertically in pedestals on said side frame members, journal-boxes supporting said guide-frames and having theV capacity of movement in a horizout-al plane within them, a driving-axle on which the jou rnal-boxes are mounted, and an electric-motor frame by which the drivingaxle is pivotally coupled to the supportingframe.

9. In an electric locomotive, the combination of two main supporting-frame members, guide-frames fitted to traverse vertically in pedestals on said side frame members, journal-boxes having the capacity of movement in a horizontal plane Within the guide-frames, bearing-plates interposed between the guideframes and journal-boxes and having inclined or wedge faces abutting against corresponding faces on the journal-boxes, a driving-axle on which the j ournal-boxes are mounted, and an electric-motor frame by which the driving-axle is pivotally coupled to the supporting-f rame.

10. In an electric locomotive, the combination of a side frame-supporting member, an open guide-frame having vertical sides fitted to traverse in pedestal-jaws ou the supporting-frame member,a cylindrical bearing-plate tted to move about its axis in a recess in the top bar of the guide-frame and having inclined or Wedge faces on its lower side, and a journal-box having corresponding faces on its top abutting against those of the bearingplate.

11. In an4 electric locomotive, the combina.- tion of a main supporting-frame comprising two side frame members, a center sill, and end buier-beams, cross-ties connected to, and

projecting above the center sill, and a floor Witnesses:

EDWARD J. APPs, AEUGENE. H. REEsE.