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Publication numberUS3307058 A
Publication typeGrant
Publication dateFeb 28, 1967
Filing dateJan 20, 1964
Priority dateJan 20, 1964
Publication numberUS 3307058 A, US 3307058A, US-A-3307058, US3307058 A, US3307058A
InventorsKarel Kucera
Original AssigneeKarel Kucera
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electromagnetic adhesion means for railroad locomotives
US 3307058 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

K. KUCERA 3,307,058 EL-ECTROMAGNETIC ADHESION MEANS FOR RAILROAD LOCOMOTIVES Feb. 28, 1967 5 Sheets-Sheet 1 Filed Jem. 20, 1964 Feb. 28, 1967 l K. KUCERA 3,307,058

ELECTROMAGNETIC ADHESION MEANS FOR RAILROAD LOCOMOTIVES Filed Jan. 20,-1964 v l 5 Sheets-$heet 2 m N w Q l l l lll 1 l Il1-rr 1 L IN1/Emili I 9 @DLI/- K. KUCERA 3,307,058


United States Patent O 3,307,058 ELECTRUMAGNIETIC ADll-IESIN MEANS FR RAILRAD LOCOM'IIVES Karel Kncera, 2nd and Adams, Neill, Nebr. 68763 Filed dan. 20, 1964, Ser. No. 338,837 1 Claim. (Cl. S10-93) The present invention relates to braking means for railroad vehicles, and more particularly it relates to electromagnetic adhesion means for railroad locomotives in which a group of electromagnets are being utilized to bring a railroad vehicleto a stop. It is understood that the present invention may lind utilization in steam-driven locomotives, as well as, in electric locomotives, dieselelectric locomotives, diesel-hydraulic locomotives, in railway cars and other such vehicles operating on conventional type rails. Also, the present invention may be applied to toy electric trains and other such vehicles which may be operated upon double, triple or single railroad tracks.

It is fully realized that there are a number of devices and brake systems in use in which magnets are being utilized to brake the wheels of railroad vehicles. In the latter, the magnets may be mounted upon the vehicle chassis, facing the rim of the car wheel. When the magnets in such a brake system are energized an electromagnetic field is produced which reacts upon the rotating car wheels to increase the vehicles traction. While in the latter brake system the magnets Aface the rim of the car wheel, in the present invention the electromagnets may be carried under the locomotive, upon conveniently mounted frames, facing the railroad track. The poles of the electromagnets are held upon the mounting frames very close to the rail, always facing the rail, but never touching the rail. Also, the electromagnets may be held to the mounting frames vertically over the rail, or they may be mounted facing the long side `of the rail, or horseshoe type electromagnets having a pair o-f poles may be mounted over the rail in such a manner as one pole in said pair facing one side of the rail, while the other pole in said pair facing the opposite side of the rail.

The primary object of this invention is to provide an efficient electromatnetic brake system by means of which a railroad vehicle may be slowed down to a stop in the shortest time possible.

Another object of this invention is to provide an electromagnetic brake means for railroad vehicles which may be inexpensive to manufacture, easy to install in a locomotive, simple to operate and efficient.

An additional object of this invention is to provide a means for mounting each individual electromagnet to the mounting brackets and means for servicing the electromagnets.

A lfurther object of this invention is to provide electrical conduit means for supplying each electromagnet under the railroad vehicle with electric current from a current source.

Another object of this invention is to provide an electric switch and control panel means from which the operation of said electromagnets may be controlled from the locomotive.

This invention also consists in certain other features of construction, and the combination and arrangement of parts, to be hereinafter fully described, illustrated in the accompanying drawings, and specically pointed out in the appended claim.

In describing the invention in detail, references will be made to the accompanying drawings, where like character numerals denote like or corresponding parts throughout the several views, in which:

FIG. l is a side elevational view of the electric locomotive showing the application of the present invention.


FIG. 2 is a front elevational view of FIG. l;

FIG. 3 is a section taken on the line 3 3 of FIG. l;

FIG. 4 is a section through the electromagnets showing the manner of mounting;

FIG. 5 is a modification showing the application of a horse-shoe type electromagnet to the present invention;

FIG. 6 is an enlarged view of a group of electromagnets shown in FIG. 5;

PIG. 7 is a sectional view taken on the line 7-7 of FIG. 6; and

FIG. 8 is a sectional view through another modification showing the application of a horse-shoe type electromagnet.

It is to be understood that the present form of disclosure is merely for the purpose of illustration and that there might be various modications thereof, without departing from the spirit of the invention as herein set forth.

Referring now more particularly to the electromagnetic brake system, made in accordance with the present invention, best seen in FIG. l, it comprises, in combination, the locomotive engine 11; the vehicles chassis 12; the front group of wheels 13; the rear group of wheels 14; the front wheel supporting cage 15; the rear wheel supporting cage 16; the electromagnets supporting frames or supporting brackets 17 and 18, respectively; and the group lof electromagnets 19 and 20, respectively. It is, `of course, understood that FIG. 1, being only a side elevational view of the locomotive engine 11, shows one row of electromagnets. In FIGS. 2 and 3, it can be seen that a `similar row of electromagnets are being utilized and are shown mounted on the other side of the locomotive engine, substantially as shown.

Reference now being made to the enlarged sectional view shown in FIG. 4, it can be seen that one end 17a of the supporting frame or the supporting bracket 17 in the front Wheel cage 15, may be held to the latter by means of the vertical mounting plate 21, which through the medium of the elongated slot 22 may be mounted over the wheel shaft, or the axle 23. The plate 21 may be provided with a pair of shoe extensions 24 and 25, respectively. A pair of compression coil springs 26 and 27 may be readily housed under the shoe extensions 24 and 25. The shoe extensions 24 and 2S and their respective springs 26 and 27 may be lcontained within the bearing mounting 28 in the front wheel cage 1S. A mounting similar to the one herein described may be provided in the opposite end 17b of the frame 17. Through the medium of a secondary vertical plate 21a (similar to the plate 21) the opposite end 17b of the frame 17 is supported over the axle 23a. The rear wheel cage 16 is similar in construction, in all essential details, with the front wheel cage 15, as already above described. Also, the electromagnets are similarly mounted. Accordingly, all the character numerals already utilized in the description of the construction of the front wheel cage 15 may be reproduced in the description of the construction of the rear wheel cage 16 and its electromagnet mounting means.

In regard to the manner of mounting the electromagnets, each magnet in the group 19 (or 20) may be provided With a soft iron core 29 (preferably round or square in section) having a hard rubber or plastic mounting sleave 30. An opening 31 in the sleave 30 receives the soft iron core 29; the latter being long enough to extend beyond the supporting frame 19, yet short enough not to contact the top of the rail L. A group of holes 32 may I be machined in the frame 17 into which, by means of the extensions 3.3, the plastic mounting sleaves 30 are being held in a substantially vertical position. A length of fine, insulated, wire may be wound around the vertical sleave 30 to complete the construction of the electromagnets, substantially as shown. If it is necessary, the outside of tion, it is rather obvious, ymagnetic adhesion system for locomotives 1s extremely simple.` For the purpose of energizing the magnets which the electromagnets may be covered with a plastic bag (not shown) to protect the latter from the elements.

Referring more particularly to the modification shown in FIGS. 5 and 6, inclusive, it can be discerned that the locomotive engine 34 is similar in all details of construction with the locomotive shown in FIGS. 1 to 4, inclusive, except that the electromagnets in the groups 19 and Z0 (now in the groups 35 and 36) may be provided with a horse-shoe type armature (or core) 37, 38, 39 and 40, Asubstantially as shown. Otherwise, the mounting of the electromagnets is substantially similar to the form of mounting already described in FIGS. 1 to 4, except that the cores are additionally provided with the magnetic plates or shoes 37a. Because the electromagnet mount- -ing means, and the wheel mounting cages in both instances is similar, the same character numerals are being used throughout. Also, FIG. 5 shows the wiring diagram. It can be discerned that each electromagnet may be provided with a pair of conduit wires a and b, which connect to a secondary conduit c and d (all the a wires connect to the conduit c, and all the b wires connect to the conduit d). By means of the additional conduits f and e, it is possible to connect the secondary conduits c and d to the on-and-off switch S in the locomotive. Electric current to energize the electromagnets may be generated through the electric generator G, which is driven by the diesel engine E. Current piped through the conduit wires g and h, from the generator G, leads to the distributor box X, and by means of the U-shaped conduit box Z may be delivered to the on-and-of switch S, substantially as shown.

FIG. 8 shows another modification. In this case the electromagnet 38 may be provided with a horse-shoe type armature 39 having a pair of poles 40a and 41, respectively, each pole facing the side of the rail L. The

electromagnet 38a may be held to the mounting frame or bracket 43 by means of clamps (not shown). A number of similar electromagnets may be provided in the front and rear wheel cage to produce a braking effect substantially as above already described.

From the description of the construction of my inventhat the operation of my electroare mounted under the locomotive engine (on either side thereto) all that is necessary is to turn upon the switch handle in the on-and-off switch S. Of course, it is understood, that the switch S may be provided with a rheostat to allow the regulation of the current supply to the electromagnets, to vary the magnetic eld produced, and thus control the braking effect.

A -careful examination of the foregoing description in connection with the inventionas illustrated inthe drawings, will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty, suflicient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size materials, and rearrangement of parts, may be resorted to in actual practice, as long as no departure is made from the`invention claimed.

Having described my invention, what I claim is the following:

An electromagneticbraking system of the class described for locomotive engines, comprising in combination, a standard type locomotive, an electric power source', a locomotive engine chassis, a front group of wheels and a rear group of wheels under said locomotive chassis,

wheel cages supporting said wheels, a plurality of vmounting frames under said locomotive held to said wheel cages, and a group of electromagnets mounted in said mounting frames, said electromagnets having armatures vertically mounted thereto, the bottom of said armatures facing the railroad tracks, conduit wires connecting said electric source to said electromagnets and a switch to regulate the supply of current to said magnets the operation upon said switch energizing said magnets to produce a magnetic eld to increase the traction of said locomotive for discontinuing the motion of said locomotive upon said railroad track, each of said electromagnets having arma'- tures which are of horseshoe type and having a pair of poles, each of said poles facing an opposite vertical side of each of the rails of said track.

References Cited by the Examiner UNITED STATES PATENTS 1,898,555 2/1933 McCune 105-77 2,159,814 5/1939 McCune 105-77 2,194,825 3/1940 Earl l0577 2,270,425 l/l942 Farmer 303-3 MILTON O. HIRSHFIELD, PrmaryExam/ter.


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1898555 *Feb 5, 1929Feb 21, 1933Westinghouse Air Brake CoTraction increasing device
US2159814 *Jul 16, 1936May 23, 1939Westinghouse Air Brake CoMagnetic traction booster
US2194825 *Jul 23, 1938Mar 26, 1940John L EarlTraction increasing means
US2270425 *Nov 28, 1940Jan 20, 1942Westinghouse Air Brake CoTraction increaser apparatus
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3506862 *Jul 12, 1967Apr 14, 1970Japan National RailwayDynamic and eddy current railway brake device
US3653329 *Sep 18, 1969Apr 4, 1972Hitachi LtdElectromagnetic traction increasing assembly
US4067264 *Jan 15, 1976Jan 10, 1978Hoogovens Ijmuiden B.V.Locomotive cab running boards
US8013550Sep 6, 2011Liontech Trains LlcModel train remote control system having realistic speed and special effects control
US8030871Oct 4, 2011Liontech Trains LlcModel train control system having realistic speed control
US8154227 *Jul 22, 2005Apr 10, 2012Liontech Trains LlcModel train control system
US8502483Aug 31, 2011Aug 6, 2013Liontech Trains LlcModel train remote control system having realistic speed and special effects control
US8892276Nov 14, 2007Nov 18, 2014Lionel LlcModel train control system
U.S. Classification310/93, 188/165, 105/77
International ClassificationB61H7/00, B61H7/08
Cooperative ClassificationB61H7/083
European ClassificationB61H7/08A