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Патент USA US2408926

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J. E. GRAHAM
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BUFFER AND DRAFT GEAR
Filed’oct. 3.0, 1945
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JOHN @GRAHAM
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.5. E. GRAHAM
2,468,925
BUFFER AND DRAFT GEAR
Filed Oct. 10, 1945
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INVENTUR.
JOHN El. Gëìí’äñnäï‘fl
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.1a. E. GRAHAM
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2,408,925
BUFFER AND DRAFT GEAR
Filed oet. 1o', 1945
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IN1/EV TOR.
‘.JQHN E. GRAHAM
A* HIS
ORNEY
Patented Oct. 8, 1946
» 2,408,925
UNITED STATES PATENT OFFICE
2,408,925
BUFFER AND DRAFT GEAR
John E. Graham, Huntington, W. Va., assigner to
The Watt Car & Wheel Company, Barnesville,
Ohio, a corporation of Ohio
Application October 10, 1945, Serial No. 621,526
12 Claims. (Cl. 213-9)
2
l
My invention relates to improvements in buf
Referring to the numbered parts of the draw
ings, my improved buffer and draft gear is to be
fer and draft gear and has to do, more particu
larly, with improvements in a buffer and draft
mounted on the end sill I0 of a mine car.
gear that is especially suitable for use on mine
housing is secured to this end sill, which is made
cars.
up of a pair of channels welded in endwise re
The principal object of my_invention is to pro
vide a buffer and draft gear, which is especially
suitable for use on a mine car, and which, though
of strong and sturdy construction, is compara
tively simple and economical to manufacture and
assemble.
A further object of my invention is ‘to provide
A
lationship to said end sill. The ñanges I2 and
I3 of these channels extend toward each other
and form the top and bottom walls of the hous
ing, but the channels are so spaced apart that the
edges of said flanges are separated, thus form
ing openings in the top and bottom of the hous
ing walls. The end sill I0 forms the rear wall
of the housing, the bases I I of the channels form
a buffer and draft gear for mine cars, of such
the side walls of the housing, the top flanges I2
nature that the parts thereof may be readily as
of the channels form the top wall of the housing,
sembled in operative relation upon the end sill
and the bottom flanges I3 of the channels form
of the mine car.
the bottom wall of the housing. The front end
Another object of my invention is t0 provide
of this housing is open.
a buffer and draft gear construction, of such na
A draft element is slidably mounted within
ture that the parts may be readily disassembled,
without the use of special tools or skills, in case 20 the housing and includes a fiat plate I4, which
is adapted to engage the front face of the sill II)
the repair or replacement of any part becomes
and the lower edge of which is slidably mounted
necessary.
on the flanges I3 forming the bottom wall of the
Further objects, and objects relating to de
housing. A pair of flanges I5 are secured to the
tails of construction and economies of operation,
will definitely appear from the detailed descrip 25 plate I4, in edgewise relationship, and extend
forwardly therefrom in vertically spaced relation
tion to follow. In one instance, I have accom
ship. These ñanges, as shown in Fig. 6, extend
plished the objects of my invention by the devices
the full length of the plate I4. A pair of hori
and means described in the following specifica
zontally spaced brackets I5 are applied to the
tion. My invention is clearly defined and pointed
upper edge of the plate I4 and to the uppermost
out in the appended claims. A structure con
flange I5 and secured thereto, eachbracket hav
stituting a preferred embodiment of my inven
ing a shoulder I'I adapted to engage the upper
tion is illustrated in the accompanying drawings,
corner of the plate I4. These brackets I6 extend
forming a part of this specification, in which:
upwardly through the opening in the top wall
Fig. 1 is a View in front elevation of a buffer
of the housing, formed by the spacing of flanges
and draft gear embodying my invention.
I2. A bitching arm I8 is applied to and welded
Fig, 2 is a bottom plan view of the buffer and
to the upper ends of the brackets I6, and is ar
draft gear.
Fig. 3 is a view in end elevation, taken on the
line 3_3 of Fig. l.
Fig. 4 is a horizontal sectional view through
the buifer and draft gear, taken on the line 4-12
of Fig. l.
Fig. 5 is a Vertical, sectional view, taken on the
line 5_5 of Fig. l.
Fig. 6 is a View of the draft element in front
elevation.
ranged centrally of the structure, and said hitch
ing arm extends forwardly parallel to the top
wall of the housing.
This arm I8 has a hole I9
therein, adapted to receive a coupling pin. It is
spaced from the top wall of the housing sufficient
ly to receive a coupling link between said top wall
and said hitching arm. Straps 20 are fastened
to the flanges i 5 and extend forwardly therefrom,
said straps being arranged centrally of the struc
ture. The forward portions of these straps are
bent toward each other, at 2l, and the foremost
and
`
portions of the straps are secured together to
Fig. 8 is a view of the draft element in side
50 form a hitching tongue 22, which lies in the hori
elevation.
zontal plane midway between the flanges I5. This
In the drawings, the same reference numerals
hitching tongue has a hole 23 therein, in line with
refer to the same parts throughout the several
the hole I3 of the hitching arm, and adapted to
views, and the sectional views are taken looking
receive the lower end of the coupling pin.
in the direction of the arrows at the ends of the
_A buffer element is slidably mounted in the
section lines.
Fig. 7 is a bottom plan view of the draft element
2,408,925
3
4
housing and projects from the open front end
thereof, and this buffer element comprises a con
element is limited by the engagement of the front
face of plats I4 with the rear face of locking bar
33.
The parts of this buffer and draft gear can be
conveniently and economically made, and assem
vex front face 24 and the upper and lower rear
wardly-extending flanges 25.
It is to be noted
that this buffer element is substantially a channel
member, of which the front face 24 constitutes the
base. Plates 23 are mounted within this channel
member, adjacent the ends thereof, and rigidly
secured thereto, and said plates :29 extend rear
wardly beyond the rear edges of flanges 25. rI‘hese
rearwardly-extending portions of the plates have
bled upon a finished mine car. The housing is
made and fastened to the end sill by welding the
channel members, having >the bases I I, in end
wise relation on said end sill. 'I‘he draft element
»can then he inserted in position within this hous
ing. The compression springs can then be in
elongated, rectangular slots 2T therein. The buff
serted withtheir rear ends seated on the forward
er element is slidably mounted on the bottom
.edges of ñanges I5, and, then, the huiîer element
.caribe slidinto position in the housing, with the
rings '39 centered in the forward ends of the
springs 3l. and temporarily held in such position
wall of the housing, its lower îñange §25 bein‘g‘in
engagement with and supported thereby, and the '
plates 2B extend rearwardly parallel to the side
walls I I of the housing. When the partsare as
sembled, the bitching tongue 22 extends into the
buffer element, midway between the top and'bot
tom flanges 25 thereof. Elongated slots 28 are
provided in the top and bottom flanges -25 of the
buffer element, to permit thepassage of the cou
pling pin.
'Pads 25 are secured to the inner‘surface of the
that the slots ‘27 'are in line with the holes 32 in
the sidewalls of the housing. The locking bar
33 can then be inserted and this holds the parts
together. The parts can be quickly disassembled
byfremoving the cotter pin from hole 36 and driv
ing ont >the lockingbar 33, the removal of which
permits the parts of this buffer and draft gear to
be removed.
I am aware that the particular buffer and draft
gear construction illustrated hereinis susceptible
of considerable variation without departing from
hitching tongue ~22 and interposed between the
the spirit of my invention and, therefore, I claim
my invention broadly, as indicated by the ap
pads ‘29 and-the front edges of the flanges I5. A
square locking bar'33, having a head 34, extends 30 pended claims.
Having thus described my invention, what I
through square holes 32 in the side walls II of
claim as new and useful, and desire to secure by
the housing, through 'theslots 21 in the plates'26
ofthe buffer element, and in front of the plate I4
Letters Patent, is:
l. A buffer and draft gear comprising the com
and between the flanges I5 of'said draft element.
The washer 35 is applied between the head 34 of 35 bination with the end sill of a car, of a housing
secured to and extending forwardly from said
the locking bar and the adjacent side wall II of
the housing, and another washer 35 is applied on
end sill, and having an open front end; a draft
the other end of the locking bar, engaging the
element slidably mounted in said housing, in front
sidewall I Iand being held in position by a cotter
of said end sill; a buffer element slidably mounted
pin ¿passed through the hole 36 in the projecting
in said housing, and projecting from the open
end'of said bar. When the parts are in the rela
front end thereof, said buffer element having side
tive positions shown in Figfß, the `forwardface of
walls with elongated openings therein; compres
sion springs interposed between said draft cle
the locking bar 33 is in line Vwith the forward
edges of flanges I5 and, under such circum
ment and said buffer element and tending to pro
stances, the rear ends of ’thecompression springs
ject said buffer element from said housing; and a
longitudinally removable locking bar carried by
3I seat on the front face of the locking bar, `as
said housing, and extending 4transversely to the
well Vas on the front edges of said flanges.
The operation of this buffer and draft gear
line of draft and parallel to `said end sill at a
should be quite apparent from the foregoing de
fixed .distance therefrom, said bar passing
scription, Ibut I will describe it briefly, at this 50 throughsaid elongated openings in the buffer side
point. When the apparatus is in buff, pressure is
walls, and in front of said draft element, and
applied to the face ‘240i the buffer element act
serving to limit movement of said buffer element
ing rearwardly, that is, in the direction of the end
under'both buff and draft and movement of said
sill‘Iû. Rearward movement of the draftelement
draft element under draft, movement of the latter
front face 24 of the buffer element, and support
rings 30, which enter the front ends of compres
sion springs 3 I, arranged one on either side ofthe
is limited> by'engagement ofthe plate »I4 with the 55 under buff being'limited by itsengagement with
frontvface'of'the end sill, so that the front edges
said endrsill.
2. A buffer and draft gear comprising the coin
of the flanges I5 'form seats, against which the
springs 3I »are compressed by rearward movement
of the‘buifer element, which rearward/movement
bination with the end sill of a car, of a housing
secured to and extending forwardly from said
is limited to that permitted by the engagement 60 end sill, and having an open front end; a draft
of the-lockingybar 33, ñxedto the housing, in the
element'slidably mounted in said housing, in front
elongated slots Y‘2l of plates '28 of the buffer ele
of said end sill; a buffer element slidably mounted
ment. iA pull on a coupling link, located between
the -hitching arm -I8 and the top wall I2 of the
housing and through which a coupling pin re
ceivedin the holes I9 and 23 passes, applies draft
to the‘draft element, which tends to move it for
wardly in'the'housing, that is, `away from the end
sill I0.
This Átends to .move the buffer element
in said housing, `and projecting from the open
front end thereof, said buffer element including
a channel member having a longitudinally-curved
base constituting the convex front end of the
buffer element, and rearwardly extending flanges
forming the top and bottom walls of said buffer
elementl and plates secured in said channel at
24 .outwardly inthe housing, but such outward 70 the ends thereof and extending rearwardly there
movementof .the bufferelement is limited'by the
from to form the side Walls of said buffer element.
engagement of the rear ends of slots 21 with the
said plates having aligned, elongated openings
rear face of the locking bar.33, so that the springs
therein; compression springs interposed between
3| yieldingly oppose this draft movement of the
ksaid draft element and the base of said buffer
draft element. Forward movement of the draft 75 channel and tending to project said buffer element
2,408,925
6
5
able locking bar carried by said housing, and ex
tending transversely to the line of draft and
5. A buffer and draft gear comprising the com
bination with the end sill of a car, of a housing
secured to and extending forwardly from said
parallel to said end sill at a fixed distance there
end sill, and having top and bottom walls and an
from said housing; and a longitudinally remov
from, said bar passing through said elongated
open front end, said top Wall having a longi
tudinally-extending opening centrally thereof; a
openings in the plates of said buffer element and
draft element including a fiat plate adapted to
in front of said draft element, and serving to
engage said end sill, and with its lower edge slid
limit movement of said buffer element under both
able on the bottom wall of said housing, and a
buff and draft and movement of said draft ele
ment under draft, movement of the latter under 10 hitching portion secured to said plate and ex
tending upwardly therefrom through the open
buff being limited by its engagement with said
ing in the top wall of said housing; a buffer ele
end sill.
ment slidably mounted on the bottom wall of said
3. A buffer and draft gear comprising the com
housing, and projecting from the open front end
bination with the end sill of a car, of a pair of
channel members secured to said end sill in end
thereof, said buffer element having spaced rear
wardly-extending portions provided with aligned
elongated openings; compression springs inter
wise relation thereto, Said channel members being
spaced apart on opposite sides of the line of draft,
with their flanges extending toward each other
and their uppermost flanges spaced apart to pro
posed between said draft element and said buffer
element and tending to project said buffer ele
vide an opening therebetween, said channel mem 20 ment from said housing; and a longitudinally re
movable locking bar carried by said housing, and
bers and end sill forming a housing, the rear wall
extending transversely of the line of draft and
of which is said end sill, the side walls of which
parallel to said end sill at a fixed distance there
are the bases of said channel members, and the
top and bottom walls of which are the flanges of
said channels; a draft element slidably mounted
in said housing in front of said end sill, and hav
from, said bar passing through said elongated
openings in the buffer element and in front of
said plate of said draft element, and serving to
limit movement of said buffer element under both
buff and draft and movement of said draft ele
ment under draft, movement of the latter under
ing a hitching portion extending through the
opening provided by the spacing of said iianges;
a buffer element slidably mounted in said hous
ing, and projecting from the open front end 30 buff being limited by the engagement of said
plate with said end sill.
thereof, said buffer element having side walls with
6. A buffer and draft gear comprising the com
bination with the end sill of a car, of a housing
elongated openings therein; compression springs
interposed between said draft element and said
buffer element and tending to project said buffer
element from said housing; and a longitudinally
secured to and extending forwardly from said
end sill and having an open front end; a draft
removable looking bar carried by said housing,
element slidably mounted in said housing in front
of said sill and including a flat plate adapted to
engage said end sill, and a pair of spaced flanges
secured in edgewise relation to said plate and ex
and extending transversely to the line of draft
and parallel to said end sill at a fixed distance
therefrom, said bar passing through openings in
the bases of said channels, through said elongated
openings in the buffer side walls, and in front
tending forwardly therefrom; a buffer element
slidably mounted in said housing and projecting
from the open front end thereof, said buñer ele
of said draft element, and serving to limit move
ment of said buffer element under both buff and
draft and movement of said draft element under
draft, movement of the latter under buff, being
limited by its engagement with said end sill.
4. A buffer and draft gear comprising the
ment having spaced rearwardly-extending por
tions provided with aligned elongated openings
therein; compression springs interposed between
said flanges of said draft element and said buffer
element and tending to project said buffer ele
ment from said housing; and a longitudinally re
combination with the end sill of a car, of a
movable locking bar carried by said housing, and
housing secured to and extending forwardly from
said end sill, and having an open front end and 50 extending transversely to the line of draft and
parallel to said end sill at a fixed distance there
a top wall with a longitudinally-extending open
from, said bar passing through said elongated
ing therein; a draft element slidably mounted on
openings in the buffer element, and in front of
the bottom wall of said housing in front of said
said plate and between said fianges 0f the draft
end sill, and having a hitching portion extend
element, and serving to limit movement of said
ing upwardly through said opening in the top
buffer element under both buff and draft and
wall of said housing and forwardly in spaced rela
movement of said draft element under draft,
tion to and parallel to said top wall; a buffer ele
movement of the latter under buff being limited
ment slidably mounted on the bottom wall of
by the engagement of said plate with said end
said housing and projecting from the open front
sill.
60
end thereof, said buffer element having spaced,
7. A buñer and draft gear comprising the com
bination with the end sill of a car, of a housing
rearwardly-extending portions provided with
elongated openings therein; compression springs
interposed between said draft element and said
buffer element and tending to project the latter
from said housing; and a longitudinally remov
able locking bar carried by said housing, and ex
tending transversely to the line of draft and
parallel to said end sill at a fixed distance there
secured to and extending forwardly from said
end sill and having an open front end, a bottom
“ wall and a top wall having a longitudinally-ex
tending central opening therein; a draft element
including a flat plate adapted to engage said end
sill and having its lower edge slidable upon the
from, said bar passing through said elongated
bottom wall of said housing, a pair of flanges se
openings in the bufferelement and in front of
said draft element, and serving to limit move
ment of said buffer element under both buff and
draft and movement of said draft element under
draft, movement of the latter under buff being
limited by its engagement with said end sill.
.75
cured to the front face of said plate in edgewise
relation and extending forwardly therefrom, and
a, hitching portion secured to the upper portion
of said plate and the uppermost of said fianges
and extending upwardly through the opening in
said top wall and forwardly parallel to said top
2,408,925
7
8
wall; .a :buffer element slidably mounted on 'the
to engage the front face of said end sill, and 'a
'bottom' wall of-said'housing and'projecting‘from
the open front end thereof, said buffer element
having spaced portions extending rearwardly and
provided'wtih aligned elongated openings; com
pair of flanges secured in spaced, edgewise rela
tion to said’plate'and extending forwardlythere
pression springs interposed between said buffer
from; a buffer element slidably mounted in said
housing and projecting from the open frontend
thereof; compression springs interposed between
element and the front edges of said flanges and
the front edges of said flanges and said buffer
>tending to project said buffer element from said
element and tending to project said buffer ele
ment from said housing; and a locking'bar car
housing; and alongitudinally removable locking
.bar carried by said housing and extending trans 10 ried by said housing and cooperating with said
versely to the line of draft and parallel to said
buffer and draft elements to limit movement of
end »sill -at a fixed distance therefrom, said bar
the buffer element under both buff and draft and
‘passing through said elongated openings in the
movement of the draft element under draft,
'buffer element, and in front of the plate of said
.draft element and between said flangesand serv
¿ingtollimit movement of said buffer element un
der both buff and draft and movement of said
movement of the latter under buff being limited
.by the engagement of said plate with said end
sill.
10. A buffer and draft gear comprising the
draft element under draft, movement of the lat
combination with the end sill of a car, of a hous
ing secured to and extending forwardly from said
ter under buff being limited by the engagement
ofsaid plate with said end sill.
20 end sill, and having an open front end, a bot
-8. A buffer and draft gear comprising the com
bination »with the end sill of a car, of a housing
tom wall and a top wall provided with a longi
tudinally-extending, central opening therein; a
secured to and extending forwardly from _said
draft element including a flat plate in front of
end sill and having an open front end, a bottom
said end sill, having its lower edge slidable on
wall and a top wall provided with a longitudi 25 the bottom wall of said housing, a pair of flanges
nally-extending central opening therein; a draft
secured to said plate in spaced, edgewise relation
:element including a flat >plate adapted to engage
and extending forwardly therefrom, and a hitch
said end sill and mounted in said housing with
ing portion secured to said plate and the upper
its lower edge slidable upon the bottom wall
most of said flanges, and extending upwardly
thereof, a pair of spaced flanges secured to said
through said opening in the top wall of said
plate in edgewise relation and extending for
housing and forwardly parallel to said top wall;
wardly therefrom, a, pair of brackets secured to
a buffer element slidably mounted on the bottom
the upper portion of said plate and the upper
wall of said housing and projecting from the
îmost of said flanges and extending upwardly in
spaced relation through the opening in the top
wall of said housing, a hitching arm secured to
said brackets and extending forwardly therefrom
parallel to the top rwall of said housing, said
open front end thereof; compression springs in
terposed between the front edges of said flanges
and said buffer element and tending to project
said buffer element from said housing; and a
locking bar carried by said housing and coop
erating with said buffer and draft elements to
hitching arm having a hole therein adapted to
receive a coupling pin, and a pair of straps se 40 limit movement of said buffer element under
cured to said flanges and extending forwardly
both buil? and draft and movement of said draft
therefrom, the forward portions of said straps
element under draft, movement lof the latter
being bent toward each other and secured to
under buff being limited by engagement of said
gether to form a bitching tongue lying midway
plate with said end sill.
between the top and bottom Walls of the housing, 45
1l. A buffer and draft gear comprising the
Ysaid tongue having a hole therethrough in line
combination with the end sill of a car, of a hous
with the hole in -said bitching arm and adapted
ing secured to and extending forwardly from said
to receive a coupling pin; a buffer element slid
end sill and having an open front end, a bottom
ably mounted in said housing and projecting
wall and a top wall having a longitudinally-ex
from the open front end thereof, said buffer-ele 50 tending central opening therein; a draft element
ment having spaced portions extending rear
including a flat plate adapted to engage the front
wardly and provided with aligned elongated
face of said end sill and having its lower edge
openings; `compression springs, one on either side
slidable on the bottom wall of said housing, a
of the hitching tongue, interposed between the
pair of flanges secured to said plate in spaced,
forward edges of said flanges and said buffer ele 55 edgewise relation thereto and extending forward
ment, and tending to project said bufferelement
ly therefrom, a bitching arm secured to said plate
from said housing; and a longitudinally remov
and extending upwardly through said opening in
able locking bar carried by said housing and ex
the top wall of the housing and forwardly par
tending transversely to the line of draft and par
allel to said end sill at a fixed distance there
allel to said front wall and provided with a hole
adapted to receive a coupling pin, and a pair of
60
from, said bar passing through said elongated
straps secured to said flanges and extending for
openings in the buffer element and in front of
said plate of the draft element and between‘said
flanges, and serving to limit movement of said
buffer element under both buff and draft and
movement of said draft element under draft,
movement of the latter under buff being limited
by the engagement of said plate with said end
sill.
9. A buffer and draft gear comprising the com
bination with the end sill of a car, of a housing
secured to and extending forwardly from said
end sill, and having an open front end; a draft
element slidably-mounted in saidfhousing in front
‘of-said end sill, `and including a ilatplate adapted
wardly therefrom, with their forward ends bent
toward each other and secured together to form
a hitching tongue extending midway between the
top and bottom walls of said housing-and having
a hole therein in line'wíth the hole in said hitch
ing arm and adapted to receive the coupling pin;
a buffer element slidably mounted on the bottom
wall of said housing and projecting from the open
front end thereof; compression springs, one on
either side of said tongue, interposed between the
front edges of said flanges and said buffer ele
ment and tending to project said buffer element
from said housing; and a locking bar carried by
said housing and cooperating with said buffer
10
and draft elements to limit movement of said
buffer element under both buff and draft and
movement of said draft element under draft,
movement of the latter under buff being limited
by engagement of said plate With said end sill.
12. A buiTer and draft gear comprising the
having a hole therein to receive a coupling pin,
and a pair of straps secured to said flanges and
extending forwardly therefrom, with their for
ward portions bent toward each other and se
cured together to form a hitching tongue pro
vided with a hole in line with the hole in said
hitching arm and adapted to receive the coupling
combination with the end sill of a car, of a hous
ing secured to and extending forwardly from
pin; a buiier element slidably mounted on the
bottom wall of said housing and projecting from
said end sill and having an open front end, a
bottom Wall and a top wall having a longitudi 10 the open front end thereof; compression springs,
one on each side of said hitching tongue, inter
nally-extending, central opening therein; a draft
posed between the front edges of said iianges and
element including a flat plate adapted to engage
said buffer element and tending to project said
the front face of said end sill and having its lower
buffer element from said housing; and a locking
edge slidable on the bottom wall of said hous
bar carried by said housing and cooperating with
ing, a pair of ñanges secured to said plate in
spaced, edgewise relation and extending forward
said 4buffer and draft elements to limit move
ment of said buiîer element under both buiï and
ly therefrom, a pair of brackets secured to said
plate and the uppermost of said ñanges and eX
draft and movement of said draft element under
tending upwardly through the upper Wall of said
draft, movement of the latter under buff being
housing in spaced relation, a hitching arm se 20 limited by engagement of said plate wtih said
cured to said brackets and extendingforwardly
end sill.
JOHN E. GRAHAM.
parallel to the top wall of said housing, said arm
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