US647454A - Electromagnetic traction apparatus for street-cars. - Google Patents

Description

No. 647,454. Patented Apr. 10, [900i ELECTROMAGNETIC TRACTION APPARATUS FOR STREET CARS.

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(Application filed May 24, 1899.)

(No Moder.)

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I ATTORNEY W/ T NE SSE S v Asu on: c m: scams vzrens c0. Puo-L-u'ma, w H

GEORGE NICKOLS MOORE, OF NElV YORK, N. Y.

ELECTROMAGNETiC TRACTION APPARATUS FOR STREET-CARS.

SPECIFICATION forming part of Letters Patent No. 647,454, dated April 10, 1900.

Serial No- 718,065. (No model.)

To 00% whom, it may concern:

Be it known that LGEORGE NIoKoLs MOORE, a citizen of the United States of America, and a resident of New York city, county and State of New York, have in vented certain new and useful Improvements in Electromagnetic Traction Apparatus for Street-Cars, of which the following is a specification.

My invention relates to means for increasing the traction of the wheels of motor-cars, and has for its object to utilize the massive metallic rail-supporting iron yokes of the'underground conduit systems in the magnetic circuits employed to increase the traction, such massive bodies being conducive to more powerful magnetic effect, as hereinafter described, reference being made to the accompanying drawings, in which-- Figure 1 is a plan View of part of a railwaytrack of the kind in which the massive iron yokes mentioned are used, with two pairs of wheels and axles thereon equipped with means for causing traction-increasing magnetic cirunits in accordance with my invention. Fig. 2 is a transverse section of the roadway, showing one of said pairs of wheels and its axle and helix in front elevation, with part of the helix broken out.

A represents a massive yoke such as now commonly used in the conduit systems of roadways, being sunk to a considerable depth in the ground Z2 and supporting the rails 0, slotplates d, and the pavement-supporting plates 6, with stays f, in the usual form of construction.

9 represents two pairs of car-wheels, with axles h, on which the car is to be mounted in any approved way. The axles are coupled bya truck-frame 1 of any approved construction, and around each axle is a helix j, said helices being wound on spools 70, which are supported by the frame 1' or other suitable support.

The helices are simply coils of wire arranged about the axles of the car, forming paths through which a current of electricity is passed about the axles. While the currents of electricity are passing through the coils the tendency is to set up in the axles and wheels,

rails, and yokes a high state of magnetism,

which has for its path the wheels, rails, and iron yokes, the paths from wheels to wheels through the rails being closed by the coils being so wound as to produce like and therefore opposing poles in the rails between the wheels,

tively, through the switch m and wires n and i 0, so that whenever it is desired to increase the traction the energizing-currents of the batterymay be turned on by setting the switch m in connection with the contact 19, thereby closing the circuits through the helices, magnetizingthe axles and the massive yokes, the ends of which are converted into pole-pieces of opposite polarity, forming complete and unbroken magnetic circuits through the helices, axles,wheels, and yokes and causing powerful attraction or adhesion at the points of contactbetween the wheels and rails.

In electric cars operated by a motor the energizing-current for the helices maybe taken from the motor-circuitin any well-known way.

What I claim as my invention is- Magnetic circuits for increasing the traction of car-wheels consisting of two pairs of car wheels and axles, rails and massive iron yokes supporting the rails in combination with a coil or stationary helix about each axle, said coils being wound for producing like and therefore opposing poles in the rails between the wheels, to confine the circuits to the yokes.

Signed by me at New York, N. Y., this 15th day of May, 1899.

GEORGE NICKOLS MOORE.

\Vitnesses:

A. O. SCHWEIZER, H. B. CHANNEL.

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