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Патент USA US3029966

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April 17, 1962
3,029,956
K. |_. DE PENTl
CAR COUPLER
Filed Dec. 6. 1960
BY
United States Patent O?ice
3,029,956
Patented Apr. 17, 1962.
1
2
3,029,956
a lock-set position which would permit the associated
cars to become separate after they are returned to theirv
CAR COUPLER
Kenneth L. De Penti, May?eld Heights, Ohio, assignor
to National Castings Company, a corporation of Ohio
Filed Dec. 6, 1960, Ser. No. 74,141
7 Claims. (Cl. 213-147)
upright positions.
These and other objects will become more apparent
from the following description and drawings in which:
FIG. 1 is a perspective view of a rotary locklift equipped
car coupler embodying the invention.
'
FIG. 2 is a side view of the invention applied to the
rotor of a car coupler, the latter being in upright position.
ticularly those having a knuckle type locking mechanism
10
‘FIG. 3 is a side view of the embodiment shown in FIG.
actuated by a bottom operated locklitt assembly.
rIhis invention relates to automatic car couplers, par
In such couplers as typi?ed by the A.A.R. standard
E coupler, a knuckle pivotally mounted in the front por
tion of the coupler is held in a closed position by a lock
2, with the coupler in inverted position.
FIG. 4 is an end view of the embodiment shownv in 4
FIG. 2, with the coupler in upright position.
FIG. 5 is a side view of a modi?cation of the invention.
that is vertically movable between a lower locking posi
FIG. 6 is a side view of the modi?cation shown in
tion and an upper unlocking or lock-set position. When 15
FIG. 5, the parts being shown in the position assumed
the lock is in lock-set position the knuckle is free to pivot
when the coupler is inverted.
to open in uncoupling position. The lock is maintained
FIG. 7 is an end view of the modi?cation shown in
in the lower locking position by gravity. Since gravity is
the basis for maintaining the lock in locking position, the
FIG. 5, with the coupler in upright position.
Referring to FIG. 1, there is illustrated the underside
of an automatic knuckle type coupler having a rotary lock
lift assembly. Mounted beneath the coupler head 2 is the
locklift assembly 4 and a rotor member 6. On rotor 6,
a slidable key 8 is mounted and is shown in its inactive
out uncoupling it from adjoining cars. In these circum
stances, the gravity responsive lock may assume a lock 25 position. It is well known in the art that upon actuation
of the rotary locklift assembly the lock of the coupler is'
set position when the associated car is inverted, and may
raised from a locking position relative to the knuckle to a
remain in such position when the unloaded car is restored
use of this type of coupler on mine and industrial cars
where it is necessary to invert the car to unload it has
been limited. As is usually the case in car dumping
operations, a single car in a train of cars is inverted with
to its former upright position. Thereafter, with the
coupler in lock-set position it will uncouple from the
opposing coupler upon the application of a pulling force
to the cars.
This’ condition may occur with the afore
mentioned standard 5 coupler as well as with various of
lock-set or unlocking position in which the ‘knuckle is free
to be swung to open or uncoupled position.
The preferred embodiment of key 8 is illustrated in
FIGS. 1, 2, 3 and 4. In FIGS. 1 and 2, the U-shaped
body portion 19 of the key can be seen mounted
the other types of car couplers now in use.
The invention disclosed herein provides an automatic
on the shank portion 12 of rotor 6 and is in its
inverted, thus adapting the coupler for rotary dumping
welded to body portion 10 can be used in lieu of a bolt
with equal e?ectiveness. The key is caused to rotate with
rotor 6 by the provision of a pair of flat surfaces 22 and
24 on opposing sides of portion 12 of the rotor, disposed
inactive position on an upright coupler. Lug 14,
car coupler having a locklift assembly with means that pre 35 projecting upwardly, from the vcrown of the'key,‘ has
an abutment surface 16 adapted forengagement with"
cludes the lock from assuming a lock-set position when
complemental surface 18 on lug 19 on the coupler head
inverted.
'
when the coupler is inverted. A bolt 20 extends across
Hence, the primary object of this invention is to provide
the open end of the U-shaped body portion to secure the
a rotary coupler with key means which will preclude
the coupler from assuming a lock-set position when 40 key to the rotor. A cotter pin or suitable metal bar.
operations.
It is a speci?c object of this invention to provide a
knuckle type coupler having rotary locklift mechanism
with key means that will cooperate with the coupler head 45 in opposed relation with the inner sides 26 and 28 of
the key. The key is in effect keyed to the shaft yet is’
to preclude the coupler from assuming a lock-set position
when inverted.
It is a more speci?c object of this invention to provide
on the rotor of a rotary locklift assembly of a car coupler
permitted to slide in a direction perpendicular to the shaft
a predetermined amount equal to the clearance between
bolt 26 and the opposing section of rotor portion 12.
an apertured key having a projection thereon adapted for 50 In FIG. 3 the key is illustrated in the position it slides
to when the coupler has been inverted. It will be ob
abutting engagement with the coupler head to maintain
the lock of the coupler in a locking position when the 7 served that lug 14 on the key is in engagement with lug
19 on coupler head 30 and will preclude rotation of
coupler is inverted.
‘
member 6. Thus the lock of the inverted coupler can
The present invention achieves its objects by mounting
not drop downward because it is held fast by the'rotary
a_ movable key on the rotor member that cooperates with
locklift assembly which is prevented from rotating by
the locklift assembly. When the coupler is in its normal
key 8. The dotted ?gure of the key indicates its normal
upright position, the key hangs loosely on the rotor shaft
inactive position when the coupler is upright. The key in '
and does not hinder the easy operation of the normal
its active position prevents the rotor from rotating in
locklift assembly. When the coupler is inverted, as dur
ing unloading operations when one car in a train is in 60 the direction indicated by the curved arrow, thus main
taining the coupler locked.
'
verted, the key slides to its operative position in which a
projecting lug on the key is in abutting engagement with
It will be understood that when a coupler equipped
a complemental projection or recess on the coupler head.
with a rotary locklift assembly is inverted, the lock may ‘
With the key abutting or engaging the coupler head, the
in many knuckle type couplers move from its locking
rotor member is unable to rotate with the locklift assem
65 position near the bottom of the coupler head to a lock
bly thereby holding the coupler lock in its locking posi
set position near the top of the head of the coupler in a
manner well known in the art. Also, the locklift as
sembly connected at one end to the leg of the lock pro
pels the lock into a lock-set position when actuated in the
70 customary manner. When such a coupler is provided
with the key means disclosed herein mounted on the
tion. Thus the lock, upon placing of the coupler in an
inverted position, is not permitted to move by gravity into
unlocking relation with the knuckle. Hence, an auto
matic car coupler having a rotary locklift assembly em
bodying the present invention can be used in rotary dump
ing operations without danger of the coupler assuming
rotor of the coupler and the coupler and associated car
3,029,968
3
are inverted, the lock, locklifter assembly, and rotor
member move together. The key means disclosed here
in instantly drops to the FIG. 3 position and precludes
the entire interconnected mechanism from moving to
a lock-set position by engaging a complemental ?xed lug
on the coupler head.
During normal upright operation of the coupler, when
4
and a symmetrical lug on the crown thereof, said lug
having a surface adapted for cooperation with a comple
mental lug on said head, said lug maintaining said lock
in locking position when in engagement with said head.
2. A car coupler having a lock movable from a lower
locking position to an upper unlocking position, rotor
means operatively connected to said lock for actuating
the same, key means slidably mounted on said rotor means
it is desired to move the coupler lock to lock-set posi
for movement in a direction perpendicular to the pivot
tion, key 8 in nowise interferes with or impedesv easy
operation of the locklift assembly of the coupler. It is 10 axis of said rotor means, said key means, when said
primarily when the coupler is inverted that the key will
coupler is inverted, being movable into engagement with
assume an operative position.
In addition to functioning as an anticreep means when
abutment means on the coupler to preclude actuation of
the coupler is inverted, key 8 is capable of functioning as
3. A car coupler comprising a head, a lock in said
head, a locklifter assembly joined to said lock, a rotor
member rotatably mounted on said assembly, key means
slidably mounted on said rotor, said key means being
a secondary or tertiary anticreep when in an upright posi
tion. Under combined end shock and vertical displace
ment of the coupler, the key, although upright, will move
upwards to its active position and engage lug 19 on the
coupler head to prevent the rotary locklift from being
actuated, thereby precluding the look from assuming a
said rotor means.
disposed in an inactive non~engaging position when said
coupler is in its upright position, said means sliding into
abutting, engagement with said head when said head is‘
inverted to maintain said coupler in a locking position.
4. A car coupler comprising a head, a lock movably
disposed in said head, Said lock movable between a lock
FIGS. 5, 6, and 7, the U-shaped body portion 4%} is
ing position and a lock-set position, a locklifter assembly
crowned with a symmetrical projection 42. In this modi
?cation of the invention, the coupler head is equipped 25 operatively joined to said lock, a rotor lever rotatably
mounted on said assembly, U-shaped key means slidably
with a lug 43 having a recess 44 complemental to projec
mounted on said rotor, said key means comprising an
tion 42 on the key. The relationship of the projection
abutment lug adapted for abutting engagement with ?xed
and lug when the coupler is in upright position can best
means on said coupler head, said key means having an
be seen in FIG. 5. When the coupler is inverted, the key
elongated slot adapted to receive therein said rotor mem
assumes an active position, wherein projection 42 is re
ber, said key means engaging said abutment lug when
ceived in recess 44 to ?rmly lock rotor 46 against any
said coupler is inverted to maintain said lock in its lock
rotational movement, thereby maintaining the coupler
ing position.
lock in a locking position. An advantage of the second
5. A car coupler comprising a head, a lock- disposed
modi?cation over the ?rst lies in the ability of the key to
preclude rotational movement in either direction. The 35 in said head, said lock movable between a locking posi
tion and a lock- et position, a locklifter assembly opera
preferred embodiment of FIGS. 1-4 permits easier en
tively joined to said lock, a rotor lever rotatably mounted
gagement of the key with the complemental lug on the
on said assembly, key means slidably mounted on said
coupler head although it does not limit rotational move
rotor, said key means comprising an elongated aperture,
ment of the rotor in both directions. A particular ad
a projection extending outwardly from one end of said
vantage of the invention as a whole lies in the key and
key, said projection adapted for insertion in a recess in
its ease of mounting on existing rotor members. To
said head to keep said rotor in a ?xed position when
aid in the mounting of the key on the rotor, U-shaped
inverted to maintain said lock in its locking position.
body portion 10 in the preferred embodiment of the in
6. A car coupler comprising a head, a lock in said
vention, and member 40 in the modi?cation thereof,
have leg members of di?erent widths. This can be 45 head, said lock movable between a locking position and a
lock-set position, a locklifter assembly pivotally joined
more clearly seen in FIGS. 4 and 7. By having one leg
to said lock, a rotor lever rotatably mounted on said as
member of U-shaped portion wider than the other leg,
sembly, key means slidably mounted on said rotor, said
as well as having corresponding widths to the ?at sur
lock- et position.
In the second modi?cation of key 39 illustrated in
faces on the rotor shaft which are adapted to receive the
means comprising a U-shaped member with an abutment
legs in abutting engagement, there is no opportunity to
mount the key on the rotor shaft incorrectly. The key
can be employed on a coupler adapted for single rotor
lug disposed thereon, said lug having a surface disposed
are used as terms of description and not of limitation
bly having surfaces of corresponding width to receive
thereon adapted for complemental engagement with a
similar surface on said coupler when said coupler is in
verted to maintain said lock in a locking position.
operation as shown in FIGS. 4 and 7, or on double rotor
7. A car coupler comprising a head, a lock in said
operation as, shown in FIG. 1, with equal case.
head, said lock movable between a locking position and
What has been disclosed, therefore, is a novel key
a lock-set position, a locklifter assembly pivotally joined
readily mountable on existing rotor members adapting
to said lock, key means mounted on said assembly, said
the coupler for rotary dumping operations as well as
means comprising a U-shaped body portion and a lug
supplying a secondary or tertiary anticreep means to the
on the crown thereof, one leg of said body portion hav
coupler.
The terms and expressions which have been employed 60 ing greater width than the other of said legs, said assem
said legs in engagement therewith, said lug adapted for
and there is no intention of excluding such equivalents
complemental engagement with an abutment on said head
as fall within the purview of the claims.
to maintain said lock in a locking position.
What is claimed is:
l. A car coupler comprising a head, a lock in said 65
References Cited in the ?le of this patent
head, said lock being movable between a locking position
and a lock-set position, rotor means operatively connected
Re.12,420
431,195
70
ber, said key means comprising a U-shaped body portion
903,220
to said lock, a rotor member mounted on said rotor
means, key means slidably mounted on said rotor mem
UNITED STATES PATENTS
Renshaw ____________ .._ Dec. 12, 1905
Renshaw et a1. _________ __ July 1, 1890
Morris ______________ __ Nov. 10, 1908
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