US1014825A - Electric locomotive. - Google Patents

Description

F. B. HOWELL.-

ELECTRIU LOGOMOTIVE. Y

APPLICATION FILED SEPT. 15, 1910.

2 SHEBTSSKEET L.

I Inventor-z F'red B.-Howe| I 2L4, rlisa ttornes.

Patented Jan. 16, 1912.

F. B. HOWELL.

ELECTRIC LOGOMOTIVE.

APPL-IOATION FILED SEPT. 15, 1910.

Patented Jan. 16, 1912.

- 2 SHEETSSHEET 2.

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Fig.2.

Witnesses:

UNITED STATES PATENT OFFICE. FRED B. ROWELL, F SCHENECTADY, NEW Y ORK, ASSIO-NOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC LOCOIVEO TIVE.

T 0 all whom it may concern Be; 1t known that -I, Fnnn B. HowELL, a

citizen of the United States, residing at t-ion.

Thisinvention relates to the propulsion of vehicles by electricity, and its object is to provide a geared electriclocomotive in which the weight-is reduced withoutany sacrifice vof power and in which the pressure on the gear teeth and the heating of the motors are kept within .sa felimits. The entire machine is c'ompact and simple in construction, and

the transmission ofpower to the driving wheels isby means of cranks and slde rods.

Theinvention will be. better understood from the following detailed description taken inconnection with the accompanying drawings, in which,-, 1 i

Figure 1 is a side elevation of my improved locomotive, slightly broken away to show the gear teeth; Fig. 2 is a transverse vertical-section on the line 22, Fig. 1, looking in the direction of the arrow, and Fig. 3 is a similar section on the line 33, Fig. 1, looking in the same direction.

The driving wheels 1 are secured upon axles 2, which are journaled in the boxes 3 held in the pedestals 4 of the frame 5, in the usual manner. :Midwaybetween the driving wheels a jack-shaft (3 is journaled in journal boxes 7 preferably held between jaws, 8 similar to those of the driving axle pedestals. The-jack-shaft,-'like the driving axles, has no vertical play between'its jaws, its journal boxes being secured rigidly to the frame. This construction, however, enables the j a ck-shaft to be dropped out of the frame vin a mannersimilar to that employed for removing the driving axles when repairs are needed.

On each-end of the jack-shaft is a gear 'wheel 9 arrz'rnged preferably in the plane of the dr ving wheels. Both gears are of the same size, and each is provided with a crankpin 10. The pin 10 at one end of the shaft is set quartering with respect to the pin at the other end. Each pin is connected by side rods 11 with suitable crank-pins l2 on the driving wheels on that side of the 1 00mm tive. The pins on each pair of wheels are set quartering like those on the jack-shaft.

Specification of Letters Patent;v

said shaft and the driving axles' Eachpair of side rods is united by 'a knue kle joint13. i

Resting on. the side frames at eachend andpreferably just over th'e'driving axles, is a cross bar 14, and on these cross bars are supported the field, frames 15 of the twoelectric motors. Said frames have abutting face plates 16 whi ch meet on a' transverse,

upright plane, as shown in Fig. 1, and are bolted together. The frames arepreferably Patented Jan. 16, 1912'.-

Application filed September 15, 1910. Serial No. 582,171. 7 I

strengthened by ribs 17. Bolted to each side of the upper part of said frames is a depend ing bracket lS which extends outward be yond the plane of the drivingwheel s, and is provided witlrtwo'journal bearings 19. The armature shafts 20 of the motors are journaled in said bearings, said shafts run ning transverse of the'locomoti've and parallelwith eaclrother and with the jack-shaft.

The ar1'naturesofthe two motors are mount ed, respectively, onthese two shafts 20., The

commutators 21 of said motors are shown in the drawings, butv the brush holders, con

ductors and all control apparatus are fomit-, ted forthe sake ofsimplicity- On each end of each motor shaft, i

plane of each gear'wheel 9 and inside 0 the journal bearing 19, is a pinion. E22, meshing with said gear. All of the pinions are, 'of the same size. The gear. and pinions on each side of the locomotive are protected'by a gear cover of which the upper part23 is removably secured tothe bracket 18.

By using two motors instead of one, greater power is secured for the same weight of material. The distribution of the power between two motors and the consequent application of it to the gear wheels at two points teeth of the gears and pinions so that they are much less liable to break and will not wear so rapidly. Moreover, the duplication of the'gears and pinions on both sides of the locomotive still further reduces. the trans- 110' The lower half 24'of the cover for the gear wheel instead of one, dividesthe pressure on the verse stress or pressure sustained by the teeth of said gears and pinions, because of the distribution of the power transmit-ted. By providing a gear wheel on each end of the jackshaft and put-tinga driving pinion on each end 'of each armature shaft, meshing with a gear wheel, the torsional strains on the armature shafts andack-shafts are distributed evenly, without danger of distorting the machine. The reduction in size of the motors, due to usingtwo instead of one, enables a quicker dissipation of the heat loss, and greater efiiciency because the motors run cooler. The single gear reduction accords with the most approved practice in railway motor design, while the side-rod transmission is a simple and standard form and one most familiar to railway employees. By unfastening the field frames 15 and bracket 18 from the cross bars 14 and taking out the bolts 25, the motors and their pinions with the upper halves of the gear covers can be hoisted out of the locomotive without disturbing the driving and running gear.

What I claim as new and desire to secure by Letters Patent of'the United States, is,- 1. An electric locomotive comprising a frame, driving Wheels and axles, a trans-- verse jack-shaft between said axles, a gear wheel on each end of said jack-shaft, crankpins on said wheels and-gears, side rods connecting said crank-pins, two electric motors supported above said jack shaft and between it and said driving axles, said motors having armature shafts extending across said locomotive, and a pinion on each end of each armature shaft, the pinions on each side of the locomotive both meshing with the gear wheel on that side.

2. An electric locomotive comprising a frame, driving wheels and axles, a jackshaft journaled transversely in said frame, gear wheels on said jack-shaft, side rods connectingsaid gears and driving wheels, and two motors provided with pinions to mesh with said gears and having field frames resting on said frame and removable vertically therefrom without disturbing the driving-and running gear. I

- 3. An electric locomotive comprising a frame, driving wheels and axles at the ends thereof, a transverse jack-shaft ournaled at the middle thereof, a gear at each end of said shaft, side rods connecting said gears and wheels, two motors located above and on either side of said shaft and between it and the driving axles, pinions on the motor shafts meshing with said gears, and a gear cover for each set of gear and pinions, the upper half of each cover being secured to the motor frame and the lower half to the locomotive frame.

4. An electric locomotive comprising a frame supported on driving wheels, a motor field frame supported on the locomotive frame, brackets on each side of said field frame, and journal bearings in said brackets for the armature shaft of said motor.

5. An electric locomotive comprising a frame supported on driving wheels, a motor field frame supported on said locomotive frame, brackets secured to theupper partof said field frame on each side thereof, and extending laterally and downward therefrom, and journal hearings in said brackets for the armature shaft of said motor.

6. An electric locomotive comprising a frame supported on driving wheel's, two motor field frames each supported at one end on the locomotive frame and having abutting face plates secured together, brackets depending from each side of the upper part of said united field frames and provided with journal bearings, and two armatures having their shafts mounted in said bearmgs.

In witness whereof, I have hereunto 'set my hand this 14th day'of September, 1910.

. FRED B. HOWELL. Witnesses:

HELEN Onrono, THOMAS W. NOONAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner'of Patents,

. Washington, G.-

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