US446703A - dewey - Google Patents

Description

(No Model.) 3 Sheets-Sheet l. M. DEWEY. ELECTRIC FIRE ENGINE.

Patented Feb. 17,1891.

WITNESSES.

BY M 3 Sheets-Sheet 2.

M. W. DEWEY.

ELECTRIC FIRE ENGINE.

Patented Feb. 17,1891

(No Model.)

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M. W. DEWEY;

ELECTRIC FIRE ENGINE.-

N 44 ,703, Patented Feb. 17, 1891.

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ATTORNEYS.

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MARK \V. DElVEY, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE DEVEY CORPORATION, OF SAME PLACE.

ELECTRIC FIRE-ENGINE.

SPECIFICATION forming part of Letters Patent No. 446,703, dated February 17, 1891.

Application filed July '7, 1890. Serial No. 357,979. (No model.)

To (0Z6 whom it may concern:

Be it known that I, MARK \V. DEWEY, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improve ments in Electric Fire-En gines, (Case No. (35,) of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to certain improvements in electrically-propelled vehicles, and also in electric fire-engines The obj ect of my invention is to electrically propel an electric fire-engine to and from the tire, so that it will not be necessary to employ horses for this purpose, and to save the time heretofore lost in hitching them to the engine, as the electricallypropelled engine is always ready to start at the instant the alarm is sounded and does not consume any energy while not in use.

The object of my invention, also, is to electrically steer an electrically-propelled vehicle or a fire-engine, so that the vehicle may be handled easily and be under the perfect control of the steersman.

To this end my invention consists in pro viding the electric fire-engine with a second ary battery to be carried thereon to supply current to the electric motor on the engine, and in providing means whereby the electric motor on the engine for operating the pump may be disconnected from the pump and connected to the engine to propel it when desired, as it is not necessary to operate the pump when the engine is being propelled to and from the fire. 7

My invention consists, also, in the arrangement of the motor on the engine to accommodate itself to the performance of its several duties and to allow a suitable place upon the engine for the battery.

My invention consists, further, in providing means upon the vehicle for steering it electrically either by the propelling-motor or a separate motor.

My invention consists, still further, in certain combinations of parts hereinafter described, and specifically set forthin the claims.

Referring to the drawings, Figure 1 is a side elevation of my fire-engine with apart of the frame, the, broken away to show the gearing clearly. Fig. 2 is a plan view taken belov the body or receptacle containing the battery and having certain parts broken away to show the apparatus beneath them. Fig. 3 is a diagrammatic view of the apparatus, circuits, and connections on the engine shown in Figs. 1 and 2. Fig. at is a diagrammatic view of a modified form and arrangement of the apparatus, circuits, and connections for my improved fire-engine; and 5 is a view of the compensating gear employed.

In the drawings, A represents the electric motor, suitably secured to and supported by the frame B of the engine, but preferably entirely below the back axle O, to allow a battery-receptacle D to be placed above said axle.

E is a double-acting reciprocating pistonpump fixed to the frameB about midway between the two axles of the vehicle.

F is the gearing or mechanical connection between the motor A and axle O, and F is the gearing or mechanical connection between the said motor and the pump. In the said connection to and upon the axle I preferably place a well-known compensating gear 0 to facilitate in turning corners, but do not limit myself to any particular form of mechanical connection either between the motor and axle or between the motor and pump. The said compensating gear is shown clearly in Fig. 5 of the drawings. Ono wheel V is sleeved upon and turns freely on the axle C, while the other driving-wheel is keyed fast. The latter is not shown in the figure. A bevelgear 0* is fixed to the hub of the wheel W, and a similar gear 1' is keyed to the driving-axle. Between these revolves a spur-gear s, which is driven by the motor A, and which carries two small bevel-pinions t t, the latter engagin g both bevel-wheels'r and 0*, their axles being in the plane of the revolution of thelarge ICO greater resistance on the inside wheel retards that, while the outer wheel necessarily moves more rapidly over its longer path, and while the motor still exerts the same force on both wheels the work done is distributed unequally between them through the then-revolving bevel-pinions without loss and without either wheel beingneeessarily slipped or disengaged.

G is a lever to operate the clutch mechanism on the motor-shaft a to disconnect the motor A from the pump and connect it with the axle G, or vice versa, when desired.

0' is the front axle of the engine. II is a fifth-wheel or circle rigidly or flexibly secured to said axle and having a rack h thereon for a gear-wheel to work in.

t' is an upright shaft extending upward from the gear-Wheel h to a large hand-wheel 4." directly in front of the steersn'ians seat I. Sleeved loosely upon the shaft i, but adapted to be fixed or keyed to the same when it is desired to steer or guide the vehicle electrically, is a gear-wheel 7a, adapted to be rotated by an endless screw 70', fixed upon a shaft Z, connected to the propelling-motoror an independent or separate electric motor J beneath the seat 1.

Either of the electric motors may be started, stopped, or reversed when desired, by means hereinafter described.

(1 is the electric circuit for supplying current to the motor A, and also to the motor J when it is employed, and any other translating devices-as, for instance, the electric lamp 1). Said lamp 1) may be placed in a shunt-circuit l) with an adjustable resistance 1)", and the steering-motor J is also placed in a shunt-circuitj, including an adjustable resistance j, the said shunt extending around the propelling-motor.

In Figs. 1, 2, and 3 the motors are shown as being regulated or controlled in speed and direction by changing the position of the brushes uponthe commutator-s of the motors in the Well-known manner not necessary to be herein repeated.

In order that the steersman may control the motors A and J, pivoted .rods connect the brushes of the motors with levers A and J, conveniently located by the side of the seat I.

In the same figures themechanical connection from the motor to the axle is on one side of the motor, and the other connection, from the motor to the pump, is on the opposite side of said motor, so that it is necessary when disconnecting one mechanism from and connecting the other mechanism to the motor by means of the lever G to shift the armature slightlylengthwise or to provide a connection between the clutches e 0 either around or through the armature, as shown. This connection consists of a shaft a, upon which the armature and the gear-wheels or pulleys c and f are sleeved, but not capable of movement in the direction of the length of said shaft.

(1' is an adjustablercsistance and cut-off in the circuit of the motor A to regulate the current passing thereto.

m is a circuit-breaker on the lever J, and 70 shown in Fig. 3, to hold the circuitj open except when the handle is grasped by the operator.

In Fig. 4: both mechanical connections are on one and the same side of the motor A. The pulleys c and f are loose upon the motorshaft, and the clutches moved by G are fixed upon a sleeve that is turned by the shaft and is capable of longitudinal movement thereon to couple either of the pulleys to the shaft, as desired. In this figure the motors are shown as regulated and reversed by varying the strength of the current through them and changing its polarity through their. armatures. j and d are the adjustable resistances in circuit with the motors to vary the strength of the currents and the speed of said motors, and j and r are current-reversers in circuit with the motors to reverse the currents through their armatures to change their direction of rotation when desired. These adjustable resistances and current reversers, commonly called current-regulating devices, are located in place of the levers A and J, or in a suitable position to be conveniently handled by the operator in charge.

In Fig. 3 is also represented the flexible connections between the axle O and, the fifthwheel II.' Said flexible connections are shown as four stiff springs it, two on each side of the mo axle, and serve to relieve the gearing from the sudden strains that it would otherwise be subjected to in moving over rough pavements.

In Fig. 4 means are shown in dotted lines for steering the engine by the propelling-ind [o5 tor A, and thus dispensing with the motor J.

To accomplish this the shaft Z is extended back to the motor A and is provided at its rear end with a miter gear-wheel, which is placed between two other mitered gear-wheels 11o fixed to a counter-shaft of the said motor, which shaft can be moved longitudinally to throw either of its gear-wheels in gear with the gear-wheel on the shaft Z by means of a lever 41., extending from the said counterr 15 shaft to the front part of the vehicle and pivoted to the frame B at 0. The axle C can I e cramped in either direction corresponding to the motement to the right or left of the lever n, and the speed of rotation of the shaft Z may be regulated by regulating the speed of the motor A.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a vehicle having a motor mounted thereon, a battery carried upon or moving with said vehicle, an electric circuit on the vehicle for supplying current. from said battery to the motor, a pump r30 carried upon the vehicle, and means to connect said motor either with the axle or wheels of the vehicle or with the pump, as desired;

2. The combination of an electrically-propolled vehicle having an electric motor mechanically connected with the axle or wheels thereof, a supply-circuit on the vehicle connected to the motor,a pump carried upon the vehicle, and means to detach said motorfrom the axle or wheels and to connect said motor with the pump.

The combination, in an electrically-propelled vehicle, of an electric motor, a mechanical connection between said motor and axle, a compensating gear in said connection connected with the wheels carried by the axle to permit of their relative movement, and an electric-supply circuit on the vehicle connected to the motor.

1. The combination of a vehicle, an electric motor supported thereon and carried entirely beneath the back axle, and means whereby the motor can propel the vehicle or drive a pump carried thereon.

In a portable fire-engine, the combination of a wheeled vehicle, an electric-supply circuit, an electric motor on the vehicle in the circuit, a double-acting reciprocating pistonpump supported upon the frame of the vehicle, and suitable; gearing connecting the motor with the pump.

6. The combination, with an electricallypropelled vehicle, of a supply-circuit, an electric motor on said vehicle connected with the circuit, and a steering mechanism for one of the axles mechanically connected with the said motor.

7. In a portable fire-engine, the combination of a wheeled carriage, a secondary battery supported mostly by the back axle or wheels of the carriage, an electric motor, electric connections between the battery and motor, a pump mounted on the frame of the carriage, and asuitable mechanical connection between the said motor and pump.

8. The combination, in an electrically-propelled vehicle, of a battery carried upon or moving with said vehicle, an electric motor, an electric circuit on the vehicle for supplying current from said battery to the motor, and a steering apparatus for the vehicle operated by the said motor.

9. The combination of a wheeled vehicle, an electric motor supported thereon and carried entirely beneath the back axle, a receptacle above said axle containing a battery, an electric circuit on the vehicle including the battery and motor, and suitable connections or gearing between the motor and said axle.

10. The combination, with a wheeled vehicle, of an electric motor supported and carried thereon, a receptacle containing a secondary battery carried upon said vehicle, one of said elements being carried above the back axle and the other entirely beneath said axle, and suitable devices whereby the motor can operate the wheels of said axle.

11. The combination, with a wheeled vehicle, an electric motor supported and carried thereon, and a receptacle containing a secondary battery carried upon said vehicle, one of said elements being carried above the back axle and the other entirely beneath said axle, of a pump carried upon said vehicle and mechanically connected with the mot r.

12. The combination, with a \Gl'lhTlQ, of an electric-supply circuit on the vehicle a motor connected with the supply'circuit and mechanically connected with the vehicle to propel it, a second electric motor carried on the vehicle and connected with the supply-circuit, and means to steer the vehicle, connected with and operated by the said second motor.

13. The combination, with an electricallypropellcd vehicle, of an electric motor, a pump upon said vehicle, means for mechanically connecting the motor with the pump, and an electric steering apparatus on the vehicle to steer the latter.

ll. The combination, with an electricallypropelled vehicle, of a pump carried upon said vehicle and means to connect the propelling-motor with said pump to operate the same and to disconnect said motor from the vehicle, so that the latter will be at rest during the operation of the said pump.

15. The combination of an electrically-propelled vehicle, a pump carried upon the ve hicle, an electric motor mounted upon the ve hicle, and suitable means whereby said motor is connected to the pump or the driving mechanism of the vehicle to propel the same or to drive the pump.

16. The combination,witl1 the axle of a ve hicle pivoted in the center, of an electric motor supported upon the frame of the vehicle and flexibly connected with the said axle to cramp it in either direction to steer the vehicle.

17. The combination of an electrically-propelled vehicle having an electric motor mechanically connected with the axle or wheels thereof, a supply-circuit on the vehicle connected to the motor, a pump carried upon the vehicle, and means to detach said motor from the axle or wheels and to simultaneously c011- nect said motor with the pump.

18. In a portable fire-engine, the combination of a wheeled vehicle, an electric-supply circuit, a double-acting reciprocating pistonpump supported in a vertical or nearly verti. cal position between the axles of the vehicle, an electric motor in the supply-circuit on the vehicle, and suitable means whereby said motor is connected to the pump or the driving mechanism of the vehicle to propel the same or to drive the pump.

19. The combination, with the axle of a vehicle pivoted in the center, of an electric motor supported upon the frame of the vehicle and connected with the said a'xle to cramp it in either direction to steer the vehicle.

20. The combination, in an electrically-propelled vehicle, of an electric motor mounted on the vehicle, an axle, Wheels on said axle adapted to be turned independently of each other or with different degrees of speed, and

suitable connections between the motor and the wheels to permit of the relative movement of said wheels.

21. The combination, in an electrically-propelled vehicle, of an electric motor mounted on the vehicle, a compensating gear suitably connected to two of the wheels of the vehicle, and suitable mechanical connections or gearing between the said compensating gear and motor to permit of the relative movement of said wheels, for the purpose described.

22. The combination of a wheeled vehicle, an electric motor supported thereon and earried entirely below the line of the axis of the wheels, means whereby the motor can propel the vehicle, and a body or receptacle above but in close proximity to the axle.

23. The combination of a wheeled vehicle, an electric motor supported thereon and carried entirely below the line of the axis of the wheels,a receptacle above said line of axis containing a battery, an electric circuit on the vehicle including the battery and motor, and a suitable connection or gearing between the motor and the said axle.

24. The combination, with a wheeled vehicle, of an electric motor supported and carried thereon, a receptacle containing a secondary battery carried upon said vehicle, one

of said elements being carried above the back axle and the other entirely beneath said axle, a pump mounted on the vehicle, and suitable devices whereby the motor can propel the vehicle or drive the pump.

25. The combination, in an electrically-propelled vehicle, of an electric motor mounted thereon, a mechanical connection between said motor and two wheels on opposite sides of the vehicle, means or devices in said connection to permit of the relative movement of the said wheels, and an electric-supply circuit on the vehicle connected to the motor.

20. In a portable fire-engine, the combination of a wheeled carriage, a receptacle supported upon the carriage, a secondary battery within the receptacle,.an electric motor on the carriage, electric connections between the battery and the motor, a pump mounted on the frame of the carriage, and a suitable mechanical connection between the said motor and pump.

In testimony whereof I have hereunto signed my name this 3d day of July, 1890.

MARK V. DElVEY. [L. Witnesses:

O. H. DUELL, H. M. SEAMANS.

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