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Патент USA US2124704

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J. HQLENK
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DRAFT AND BUFFING GEAR
' Filed May 4, 1935
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2,124,764
Patented July 226', 1938
UNETED STATES PATENT OFFl?E
2,124,704
DRAFT AND BUFFING GEAR
John H. Link, Merion, Pa., assignor to» W. H.
Miner, Inc., Chicago, 111., a corporation of Dela
ware
Application May 4, 1935, Serial No. 19,780
12 Claims.
This invention relates to improvements in draft
and buffing gears especially adapted for use in
connection with mine cars.
One object of the invention is to provide a
5 simple and e?icient combined draft and bufling
gear which may be economically manufactured,
including yieldingly resisted draft and buffing
members and a pin for connecting the draft
member to the usual coupling link, wherein the
10 pin also functions as a lever member for forcing
the draft member inwardly to actuate the same,
thereby reducing the number of parts required
to form the complete mechanism and greatly
simplifying the construction of the combined
15 gear.
A more speci?c object of the invention is to
provide in a mechanism of the character de
scribed in the preceding paragraph a simpli?ed
construction, wherein the pin is fulcrumed on
20 the upper part of the bu?ing head, thereby
avoiding the necessity of a separate support for
mounting said pin for pivotal swinging move
ment.
Other objects of the invention will more clearly
25 appear from the description and claims herein
after following.
In the drawing forming a part of this speci
?cation, Figure l is an end elevational view of
a mine car, partly broken away, illustrating my
30 improved combined draft and buffing gear in
connection therewith, the gear being shown in
partly front elevation and partly in vertical sec
tion, the section corresponding substantially to
the line I-I of Figure 3. Figure 2 is a hori
35 zontal sectional View, corresponding substantial
ly to the line 2-2 of Figure 1, showing the gear
in part plan and part horizontal section. Fig
ure 3 is a vertical sectional view, corresponding
substantially to the line 3-3 of Figures 1 and 2.
40 Figure 4 is a view similar to Figure 3, showing
the parts in the position assumed during draft
action of the gear.
'
In said drawing, l0 indicates the vertical end
Wall of a mine car, H the end sill member, and
45 I2 a bottom plate secured to the horizontal
?ange of said end sill.
My improved combined draft and bu?ing gear
is mounted as a unit on the end of the car, and
comprises broadly a support A in the form of a
50 housing; a bufling head B; a draft member or fol
lower C; cushioning springs D-D; a combined
coupling pin or lever E‘; and stop bolts F-—-F for
limiting outward movement of the buffing head
and" holding the parts of the mechanism as
65 sembled.
(Cl. 213-43)
The housing A includes a vertical plate sec
tion [3, which is riveted to the vertical end wall
In of the car, as clearly shown in Figures 1 and 2.
The housing A further includes vertical side walls
Ill-14 and spaced top and bottom walls l5—l5 5
projecting outwardly from the plate section i3
and formed integral therewith. Above the top
wall 15 of the housing A, the plate I3 is provided
with a horizontally disposed, outwardly project
ing arm l6, which extends beyond the flat edge 10
of the top wall l5 and is spaced above said wall
a sufficient distance to accommodate the usual
coupling link ll therebetween. The arm H5 is
provided with a longitudinally extending, elon
gated opening l8'adapted to accommodate the 15
coupling pin E and permit rearward movement
thereof with the buiiing head B. The top wall
H") of the support A is slotted, as indicated at 34,
to provide clearance for the pin E. in its rear
ward movement with the buffing head B.
20
The buffing head B, which is telescoped with
in the housing A, comprises top and bottom walls
19 and 2G, spaced vertical side walls 2l—2l and
a vertical front wall 22. The front wall 22 is
transversely curved, as clearly shown in Figure 25
2, and provides a buf?ng face adapted to cooper
ate with the buiiing head of an adjacent car.
The buf?ng head B is connected to the housing A
by means of a pair of bolts F—F at opposite
sides of the housing, extending through the top 30
and bottom walls thereof and through longi
tudinally elongated guide slots 24-—24 provided
in the top and bottom walls I9 and 2H of the
bu?ing head B. The bottom wall 20 of the
buffing head is provided with a longitudinally 35
elongated opening 25 adapted to receive the lower
end of the coupling pin E. The top wall IQ of
the head is also provided with an opening 26,
which is of smaller dimensions than the opening
25, and loosely receives the shank of the cou- 40
pling pin E, as clearly indicated in Figures 3 and
4. The openings 25 and 26 of the buf?ng head
B and the opening l8 of the arm H5 are in verti
cal alignment.
The draft member or follower C is in the form 45
of a block having a transversely curved front
face 21, which bears on the inner side of the
front wall 22 of the bu?ing head B. The fol
lower C has a central rearward extension 28
which is provided with a vertical opening 29 50
therethrough.
As sshown most clearly in Fig
ures 3 and 4, the opening 29 has a curved rear
wall 30 on which the shank of the coupling pin
E is adapted to rock. The opening 29 is of such
a length that the coupling pin E may freely 55
2
2,124,704
swing from the position shown in Figure 3 to
that shown in Figure 4. At opposite sides of the
enlargement 28, the follower C is provided with
spring abutments having rearwardly extending,
central bosses 3|-3I thereon, adapted to center
the springs D—D of the cushioning means. The
springs D—D are thus relieved from excessive
strain and the pulling force is applied directly to
the housing A.
I have herein shown and described what I now
consider the preferred manner of carrying out my
invention, but the same is merely illustrative and
rear wall of the housing A is also provided with
I contemplate all changes and modi?cations that
similar bosses 32—32 which engage with the rear
come within the scope of the claims appended
ends of the springs D—D. As shown most clear
hereto.
ly in Figures 1 and 2, the springs D—D are ar
ranged at opposite sides of the mechanism and
hear at their front and rear ends, respectively,
on the follower C and the rear wall of the hous
I claim:
1. In a combined draft and bui?ng gear for
cars, the combination with a support on the end
of the car; of a buffing head slidable inwardly on
said support; a follower movable inwardly with
said head; yielding means opposing inward move
ment of said follower; a coupling pin bearing at
one end on the follower; a coupling link through
which said pin extends for applying an outward
pulling force to the other end of said pin, said pin
being fulcrumed between its ends on the buffing
head; and means on said support for limiting
ing.
The coupling pin E, which also serves as a piv
oted lever for actuating the draft member or fol
lower 0, extends through the opening 18 of the
arm I6 of the housing A, through the coupling
link H, and through the openings 26 and 25 in
the top and bottom walls l9 and 20 of the bufling
head B. As will be evident, the pin E is main
tained in its assembled position by means of the
head at the upper end ‘thereof, which prevents
the pin from dropping through the opening i 8
of the arm it of the housing A.
As will be evident, upon reference to Figure 3,
which shows the parts in their normal position,
outward movement of the follower C is positively
limited by engagement of the forward end thereof
_ with the inner side of the front wall of the bu?ing
head B, thus relieving the pin E from direct pres
sure so that the same may be easily withdrawn in
an upward direction to uncouple the link [7. In
asmuch as the buf?ng head B and the follower C
remain in the normal position shown in Figure 3,
after removal of the pin E, the pin-receiving
openings of these parts remain in proper, posi
tions to receive the pin E so that the latter may
readily be applied to couple the link I‘! to the
bu?ng head B and the follower C, and at the same
time operatively connect the parts of the mecha
nism, the pin being applied by inserting the same
downwardly through the opening I8 of the arm
[6, the opening of the link I‘! and the openings
of the bu?ing head B and followerC.
' '
The operation of my improved draft and buff—
ing gear is as follows, assuming that a' buffing
force is applied to the bu?ing head B: The head
B is forced inwardly, thereby carrying the follower
outward swinging movement of said pin.
2. In ‘a combined draft and bu?ing gear for
cars, the combination with a support onthe end
of the car; of a buf?ng head slidable inwardly on
said support; a follower movable inwardly with
said head; yielding means opposing inward move
ment of said follower; an arm projecting out
wardly from said support, said arm having a
longitudinally extending,
elongated opening
therethrough; and a coupling pin extending
through said opening and having rocking en
gagement with the buffing head and follower.
30
8. In a combined draft and buffing gear for
cars, the combination with a support on the end
of the car; of a bu?ing head slidable inwardly 'on
said support, said head having a rearwardly fac
ing fulcrum shoulder thereon; a follower mova
ble inwardly with the buffing head, said follower
having a forwardly facing bearing face thereon; 40
means for limiting outward movement of said
follower with respect to said bu?ing head to space
said'bearing face and shoulder a predetermined
distance apart; yielding means opposing inward
movement of ‘said follower; a coupling link above
said buffing head; and an upright coupling pin
having a straight shank, said shankbeing of a
thickness to be‘ accommodated between said
bearing face and shoulder when spaced said pre
determined distance apart and permit movement
of said pin lengthwise in an axial direction, said
C therewith and compressing the springs D—D
against the rear wall of the housing. ‘Inward
movement of the buf?ng head is limited by en
pin extending through said link, the front face
gagement of the rear edges of the top,_ bottom, of said shank having rocking engagement at a
and side walls thereof with the rear wall of the point between the ends ofsaid shank on said
housing A. During the draft action of the gear, fulcrum shoulder of the bll?il'lg head and said
the pulling force is applied to the pin E through shank bearing at its lower end on the bearingface *
the coupling link ll. During the draft action, of said follower.
the coupling pin E is swung outwardly from the
4. In a combined draft and buffing gear for
position shown in Figure 3 to that shown in cars, the combination with a support on the end
Figure 4, thereby rocking the pin on the front of the car; of a bu?ing head slidable inwardly on
wall of the opening 26 in thetop of the buffing said support, said head having a rearwardly fac
head B. During this rocking or fulcruming action ing fulcrum shoulder thereon; a follower movable
of the pin E on the buffing head, the follower C inwardly with said head, said follower having a
will be forced inwardly from the position shown vertical opening therethrough; means yieldingly
in Figure 3 to that shown in Figure 4, thereby opposing inward movement of said follower; a
compressing the springs D—D against the rear coupling link; a vertically disposed coupling pin ‘
wall of the housing A. As will be'evident, the extending through, said coupling link and the
buffing head remains stationary during this ac
opening of said follower, said pin having rocking
tion. The rocking movement of the pin E is engagement between its ends on said fulcrum
r- limited by engagement of the upper end of the shoulder and adapted to engage the rear wall of
shank of the pin with the front end wall of the the opening of said follower for forcing the fol
slot or opening l8 of the arm 16 and by engage,
lower inwardly in draft; and means for limiting
ment of the lower end of the shank of the pin outward movement of the upper end of said pin.
with the front edge face 33 of the bottom wall l5.
5. In a combined draft and buf?ng gear for cars,
75 of the housing, as will be seen in Figure 4,, The
the combination with a support on theend of 75
2,124,704
the car; of a bui?ng head slidable inwardly on
said support, said head having a top Wall provided
with a vertical opening therethrough; a follower
movable inwardly with said head, said follower
being disposed below said top wall of the head,
said follower having a vertical opening there
through; an outwardly projecting arm on said
support above the buffing head and spaced there
from to accommodate a coupling link between
10 said head and arm, said arm having a vertical
opening therethrough; yielding means opposing
inward movement of said follower; and a verti
cal coupling pin engaged with said link and ex
tending freely through the openings of said arm,
top wall of the bu?ing head'and follower, and
adapted to have rocking engagement with the
front wall of the opening of said head and the
rear wall of the opening in said follower.
6. In a combined draft and buffing gear for
cars, the combination with a buffing head movable
inwardly toward the end of the car; of a coupling
link; an inwardly movable draft member; yielding
means opposing inward movement of the bu?ing
head and draft member; a coupling pin provided
with a straight shank extending through said
link and operatively connecting the draft mem
ber to said link; and fulcrum means on which
the front edge of the shank of said pin bears for
pivotally supporting said pin, said pin engaging
the draft member to force the same inwardly, said
pivotal support for said pin being arranged be
tween the draft member and coupling link, said
draft member having shouldered engagement with
the bu?ing head to limit outward movement of
l the former with respect to the latter and rela
tively position the same to accommodate the
shank of the coupling pin between the fulcrum
means and the point of engagement of the pin
with said draft member and permit endwise re
40 moval and application of said pin.
'7. In a combined draft and bu?ing gear for
cars, the combination with a coupling link; of a
coupling pin having a straight shank the upper
end of which extends through said link and is
engageable thereby to be swung outwardly away
from the end of the car in draft; an inwardly
movable member on the end of the car; means
for limiting outward movement of said member,
said member having a rearwardly facing fulcrum
shoulder on which the forward side of said pin
bears and is pivotally supported between its ends';
an inwardly movable draft member having a
forwardly facing bearing surface on which the
rear side of the lower end portion of said pin bears
Eli Ll to force said draft member inwardly toward the
end of the car when said pin is swung on said
fulcrum shoulder by outward movement of said
link; stop means for limiting outward movement
of the draft member with respect to said first
to named member to position said fulcrum shoulder
and bearing surface to receive the coupling pin
therebetween for axial application and removal;
and yielding means opposing inward movement of
said draft member.
8. In a combined draft and bu?ing gear for
cars, the combination with a bu?ing head mova
ble inwardly toward the end of the car; of a cou
pling link; an inwardly movable draft member;
yielding means opposing inward movement of the
draft member, said buffing head having shoul“
dered engagement with the draft member to limit
outward movement of the draft member with
respect to the buffing head and to force the latter
inwardly against the resistance of said yielding
75 means in buff; a coupling pin having a substan
3
tially- straight shank, the upper portion of which
extends through said link to operatively connect
the link thereto; and fulcrum means engaging
with and bearing on the forward side of said
shank between the ends of the same for pivotally
supporting said pin for swinging movement about
a horizontal axis, the lower end portion of the
shank of the pin engaging the draft member to
force the same inwardly during outward swinging
movement of the upper end of said pin through a 10
pulling action applied to said link in draft, said
fulcrum means and point of engagement of the
pin with the draft member being maintained in
position in full release of the mechanism by said
shouldered engagement of the buf?ng head and 15
draft member to receive the coupling pin there
between and permit application and removal
thereof in an endwise axial direction.
9. In a combined draft and bu?ing gear for
cars, the combination with a bu?ing head movable
inwardly toward the end of the car; of an in
wardly movable draft member; yielding means
opposing inward movement of the buffing head
and draft member; a coupling link; a coupling
pin including a straight shank of substantially 25
uniform thickness throughout its length, said
shank extending through the link for operatively
connecting the pin to the link, the front side of
said shank of the pin being in rocking engage
ment with the buf?ng head at a point below the 30
connection of said link with said shank, the lower
end portion of said pin having bearing engage
ment with the draft member to force the same
inwardly by swinging movement of said pin dur
ing draft action; and stop means for limiting out 35
ward movement of the draft member with respect
to said bui?ng head and positioning said points of
engagement of the draft member and buffing head
with the shank of the pin to permit removal and
application of said pin in a lengthwise direction. 40
10. In a combined draft and bu?ing gear for
cars, the combination with a bufling head movable
inwardly toward the end of the car; of a follower
on which the bu?ing head bears; yielding means
opposing inward movement of said follower; a
coupling link; a vertically arranged coupling pin
having a substantially straight shank, the upper
end portion of which extends through said link;
means having bearing engagement with the for
ward side of said shank for pivotally supporting 50
said pin for rocking movement, the lower end por
tion of said shank engaging the follower to force
the same inwardly when an outward pulling force
is applied to the upper end of the shank of said
pin in draft, said link and follower being disposed 55
at opposite sides of the pivot point of said shank;
and stop means determining the relative posi
tions of the parts of said gear in complete release
to relieve said pin from binding pressure and
permit removal thereof endwise in axial direction 60
from between the points of contact of said pin
with the pivotal support and follower.
11. In a combined draft and bu?ing gear for
cars, the combination with a buf?ng head movable
inwardly toward the end of the car; of a follower
on which the buffing head bears, said follower
having an opening therethrough; yielding means
opposing inward movement of said follower; a
coupling link; a coupling pin including a head at
the upper end and a substantially straight shank 70
extending from said head, said shank extending
freely through said link to operatively connect the
head end thereof to said link, the other end of
said shank extending freely through the opening
of said follower and bearing on a wall of said 75
4
2,124,704
opening; a fulcrum support on which said pin
bears at a point between its ends; and means
for limiting outward movement of said follower
with respect to said fulcrum means to position
said opening of the follower with respect to said
fulcrum support to permit unobstructed endwise
removal and application of said pin in axial
direction.
.
12. In a combined draft and bu?ing gear for
cars, the combination with a buf?ng head movable
inwardly toward the end of the car; of a fol
lower on which the buf?ng head bears to limit
outward movement of said follower with respect
to said head, said follower having an opening
therethrough and an inner curved bearing face
head; a coupling link; an upright coupling pin
having a straight shank, said shank extending
through the coupling link and the opening of said
follower, one end of said shank being engageable
by the link and the other end thereof being en
gageable with the curved bearing face of the
follower; and fulcrum means on the buf?ng head
for said pin engaging and bearing on the forward
side of said shank between the ends of said shank,
said fulcrum means and curved bearing surface 10
being so positioned when the follower reaches its
limit of outward movement with respect to said
head that the pin is removable from between said
fulcrum means and curved bearing surface in
endwise direction in a substantially straight path. 15
on the rear wall of said opening; means yieldingly
opposing inward movement of said follower and
JOHN H. LINK.
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