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Патент USA US3069033

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Dec. 18, 1962
_ L. w. R058
3,069,023
MAGNETIC UNCOUPLER FOR MODEL RAILROAD CARS
Filed Ju1y_l8, 1960
,
.
2 Sheets-Sheet l
INVENTOR.
Ler-oy W. Ross
BY
MHW'
.
‘My
Dec. 18, 1962
3,069,023
L. W. ROSS
MAGNETIC UNCOUPLER FOR MODEL RAILROAD CARS
FI-‘iled July 18, 1960
2 Sheets-Sheet 2
INVENTOR.
Lergoy W. Ross
United States Patent’ O??ce
1
2
3,069,023
in a model train set, being pulled to the right along a
track T by an engine (not illustrated). The cars C1 and
(12 are coupled by a pair of identical couplers 10 em
MAGNETIC UN COUPLER FOR MGDEL
'
3,069,023
Patented Dec. 18, 1962
RAILRQAD CARS
bodying my invention. Each coupler 10 comprises an
elongated pivot arm portion 11, formed with a journal
Leroy W. Ross, Coconut Grove, Fla.
Filed July 18, 196i), Ser. No. 43,557
5 Claims. (Cl. 213-211)
pin opening 12 at one end and a body portion 13 at the
other end. The body portion 13 of each coupler is pro
My invention relates to model railroad car couplers
and is directed particularly to improvements in car cou
plers providing for automatic uncoupling by magnetic
vided at one side with a recess 14 in the general form
of a parallelogram de?ned at the outer end of said body
The hook portion 15 of
each coupler 10 is integrally formed with an outwardly
10 portion by a hook portion 15.
means upon pushing and then pulling the train when at
a particular position along the track.
Various mechanisms for automatically disengaging or
extending arcuate portion presenting, together with the
outer surface of said hook portion, a substantially smooth
uncoupling model railroad cars when passing over trip-.
outer surface 16 inclined with respect to said elongated
ping mechanism of ‘one kind or another located along a 15 pivot arm portion 11, for the purpose hereinafter appear
short section of track have heretofore been proposed.
mg.
None has found widespread acceptance however for vari
Each coupler 10 has also integrally formed therewith
ous reasons, principal among which are their unreliability
an abutment portion 17 disposed in spaced relation below
in operation, their frequent mechanical failure and their
the recess 14 formed in the body portion 13 thereof, said
comparatively high cost.
It is accordingly the principal object of my invention
to provide an automatic uncoupling coupler for model
trains which overcomes the de?ciencies of prior uncou
pling mechanisms.
abutment portion providing a substantially rectangular,
?at, outwardly-directed abutment surface 18, for the pur
pose ‘hereinafter appearing.
The cars C1 and C2 are provided with means for
journalling couplers It) at each end. .For this purpose,
A more particular object is to provide a magnetically 25 the underside of each car is molded or otherwise formed
actuated uncoupling coupler that uncouples when a train
is pushed to a positionwherein' the coupler sought to
be uncoupled is in alignment with magnet elements '
located along the track, and then reversed in direction to
pull the forward uncoupled portion of the train away 30
pin 20- (see FIG. 3).
from the uncoupled cars.
one arm 22 in abutting relation against one outside cor
7
Yet another object of the invention is to provide an
at each end with a rectangular draft box 19 within which
is centrally formed a short, outwardly-extending journal
A coupler 10 is loosely ?tted on
each journal pin 21?. Also ?tted on each journal pin 20
beneath each coupler 10 is a torsion spring 21 having
ner of its draft box 19, and the opposite arm 23 in abut
automatic uncoupling coupler of the above nature which
ting relation against the outside of the body portion 13
comprises a simple modi?cation of the standard so-called
of its coupler 10, i.e., the side opposite the recess 14
“NJVLRA.” (National Model Railroad Association) cou 35 therein (see FIGS. 5, 6 and 7). Each spring 21, being
pler such as that sold under the trademark “Varney”
under torsional compression, normally urges its coupler
manufactured by the Varney Corporation of Miami,
It) in the counter-clockwise direction, as seen from the
top as in FIGS. 4, 5, 6 and 7. A rectangular draft box
Florida, and which can be supplied in kit form for modi
?cation of such couplers.
cover 24 cemented or otherwise ?xed over each car draft
Other objects, features and advantages of my invention 40 box 19 holds the couplers 10 and springs 21 in assembled
relation.
_
will be apparent from the following description when
read with reference to the accompanying drawings. In
So much of the couplers it} as has hereinabove been
the drawings, wherein like reference numbers denote cor
described is fabricated of a non-‘magnetic material, and
responding parts throughout the several views:
is preferably integrally molded of a synthetic plastic.
Referring ?rst to FIG. 4, showing the couplers 10 of
FIG. 1 is a side elevational view of a coupler embody- '
ing the invention connecting cars, partially shown, being
pulled to the right along a section of track,
FlGJZ is a vertical cross-section taken along the line
adjacent cars at rest position, it will be apparent that
upon pushing the cars together, the arcuate portions 16
of said couplers will slide along each other until the hook
2—2 of FIG. 1 in the direction of the arrows,
50 portions fall into interengagement.
Referring to FIG. 5, it will be apparent that when the
FIG. 3 is an exploded view, in perspective, of a cou
details thereof and the method of assembly to a model
hook portions 15 of the couplers 10 of adjacent cars are
interengaged they Will normally be constrained in such
car,
interengagement by the action of the torsion springs 21,
pler according to the invention, showing constructional
and the cars will thus normally remain coupled as the
FIG. 4 is a plan view of ‘the coupling mechanism in
car train is pulled along the track. If the car train should
uncoupled or rest position just prior to coupling engage
be pushed backwardly, as illustrated in FIG. 6, the cou
ment,
piers 11}, by virtue of the arcuate portions 16 thereof
FIG. 5 is a horizontal cross-sectional view, taken along
sliding against the inclined inner surfaces of the parallel
line 5-5 of FIG. 1 on an enlarged scale, illustrating the
interlocking engagement of‘ the coupling mechanism 60 ogram recesses 14 thereof, would only be able to swing
open against the resiliency of the torsion springs 21 by
when the cars are being pulled,
a short distance before the abutment surfaces 18 of the
PEG. 6 is similar to FIG. 5, but illustrates operation
abutment portions 17 of said couplers would meet to
of the coupling mechanism when the cars are being
pushed, and
>
transmit the pushing forcebackwardly from car to car.
‘FIG. 7 illustrates in full lines the complete disengage 65 As illustrated in FIG. 6, under this condition the hook
portions 15 ‘of the couplers 10 are disengaged, but will
ment of the coupling mechanism 'when the cars are
normally slide into interlocking engaging position again
pushed to a section along the track in alignment with the
uncoupling magnets, whereby the train will be uncou
under the urging of the torsion springs 21 when the cars
pled upon the engine being reversed to pull the cars
are pulled in the forward direction as illustrated in
forward.
70 FIG. 5.
Referring now in detail to the drawings C1 and C2 in
This invention comprises magnetic means to effect
FIG. 1 represent a pair of adjacent cars (partially shown) . disengagement of the couplers 14} when in partially open
3,069,023
4
“pushing" condition as illustrated in FIG. 6, and when
outwardly of said recess in said body portion, and an
the train is then stopped and reversed in direction at a
elongated magnetic member secured to and extending
downwardly and outwardly of said body portion in the
particular position along the track. To this end, each
coupler It) has secured thereto in downwardly and out
direction opposite said recess therein and adapted to be
magnetically attracted by a permanent magnet positioned
along the outside of a section of train track, whereby
when a pair of adjacent cars coupled by said couplers
being in complementary hooking engagement are pushed
wardly-extending relation to the underside of the body
portion 13 thereof, a magnetic member 25. The mag
netic member 25 may conveniently be made of a soft
iron wire which is molded, cemented or otherwise secured
in the body portion 13' of each coupler 10, and which
has a short, downwardly~extending portion 26 and a com
to a position in alignment with a pair of opposed mag
10 nets positioned along the outsides of a section of train
paratively longer outwardly and downwardly inclined
track said hook portions will be moved into relatively
portion 27 terminating in a somewhat enlarged end por
tion 28 (see FIGS. 1, 2 and 3). As illustrated in FIGS.
5 and 6, the magnetic members 25 extend outwardly in
such direction that their enlarged end portions 28 lie
substantially along a common line perpendicular with the
direction of train travel. As illustrated in FIGS. 1 and
2, the magnetic actuating means also comprises a pair
of bar magnets 29, 3t} ?xed at each side at one position
unhooked engagement to allow outward swinging and
uncoupling of said couplers upon the outward attraction
of said magnet members in the direction of their respec
tive trackside magnets.
along the track in spaced parallel disposition, the mag
nets preferably being mutually reversed in polarity and
2. A magnetically-actuated uncoupling coupler for
model railroad cars as de?ned in claim 1 wherein said
magnet member is in the form of a length of ferrous
metal wire having an enlarged outer end portion.
20
body portion is integrally formed with an abutment por
tion disposed in spaced relation below said recess, said
in close disposition to the outsides of the rails of the
tracks T.
Referring now to FIG. 7 and considering the opera
abutment portion providing a substantially rectangular,
?at, outwardly-directed abutment surface, whereby when
tion of the magnetic uncoupler comprising the invention,
the adjacent cars are pushed, the coupler abutment sur
faces will contact each other after said hook portions
are moved into relatively unhooked engagement, the
it will be noted that when the cars are pushed back
wardly along the track (as indicated by the broken line
arrow in FIG. 7 and the broken line representation of
the couplers 10) to a position where the magnetic mem
sliding frictional resistance of said abutting surfaces be
ing su?icient to prevent the attractive movement of said
magnetic members by said magnets when said cars are
‘ bers 25 are substantially in register with one end or the
other of the bar magnets 29, 3t), magnetic attraction will
pull upon said members 25 and swing the couplers It}
in the clockwise direction against the weaker force of the
reacting torsion springs 21. Thus the couplers will be
completely disengaged as illustrated by the full line rep
3. A magnetically-actuated uncoupling coupler for
model railroad cars as de?ned in claim 1 wherein said
continuously pushed past said magnets.
4. In a conversion kit for model railroad car couplers
of the type comprising a pivot arm member having
~ means at one end for swingably connecting to the draft
resentation thereof in FIG. 7, and subsequent pulling
box of a model car, a body portion integrally formed
away of the forward car as illustrated by the solid line
arrow in EEG. 7 will separate the cars. It is to be noted
at the other end of said pivot arm member, a recess
formed in one side of said body portion, said recess
however that if the train is backed past the actuating
being de?ned at the outer end of said body portion by
magnets 29, 39, Without stopping, however slowly, the
frictional interengagement of the abutting surfaces 18
of the couplers It) will be sui?cient to prevent sliding
sideward separation thereof, and consequent interference
an inwardly-directed hook portion; the combination com
prising a length of ferrous metal wire bent to provide a
?rst portion adapted to be secured at its outer end to the
underside of said body portion to extend downwardly
therefrom and a second portion extending at an obtuse
While I have described herein only one form in which 45 angle from said ?rst portion and adapted to be directed
away from said recess in said body portion, said second
the invention may conveniently be embodied in practice,
portion being longer than said ?rst portion, and a magnet
it is to be understood that this form is presented by way
for placement along a section of train track for mag
of example only, and not in a limiting sense. In short,
netically attracting the outer end portion of said second
the invention includes all the modi?cations and embodi
portion of said bent metal wire.
ments coming within the scope of the following claims.
5. A conversion kit for model railroad couplers as
What I claim as new and desire to secure by Letters
de?ned in claim 4 wherein the outer end of said second
Patent is:
portion of said bent wire is of enlarged form to provide
1. In a magnetically-actuated uncoupling coupler for
for greater magnetic attraction.
model railroad cars, the combination comprising a pivot
with normal operation.
'
arm member having means at one end for swingably con
necting to the draft box of a model car, a body portion
integrally formed at the other end of said pivot arm
member, a recess formed in one side of said body por
tion, said recess being de?ned at the outer end of said
body portion by an inwardly-directed hook portion, resil
ient means urging said pivot arm member in the direction
55
References €ited in the ?‘re of this patent
UNITED STATES PATENTS
2,868,393
2,933,201
Bailey _______________ __ Jan. 13, 1959
Anderson ____________ __ Apr. 19, 1960_
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