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Патент USA US2129549

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Sept. 6, 1938.
2,129,549
'o. c. DURYEA
CAR CONSTRUCTION
5 Sheets-Sheet 1
Filed Nov. 20, 1956
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Sept 6, 1938~
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o. c. DURYEA
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2,129,549
CAR CONSTRUCTION
Filed Nov. 20, 1956
3 Sheets-Sheet 2
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SePt- 6, 1938.
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o. c. DURYEA'
‘
CAR CONSTRUCTION
2,129,549
'
Filed Nov. 20, 1936
~
5 Sheets-Sheet 3
‘
2,12%,549
Patented Sept. 6, 1938
v UNITED STATES‘
PATENT oFFics
2,129,549
CAR- CONSTRUCTION
Otho C. Duryea, Waterbury, Conn., assignor to
O. C. Duryea Corporation, Wilmington, DeL,
a corporation of Delaware
Application November 20, 1936, Serial No. 111,958
11 Claims.
This invention‘relates to railway car under
frames ‘of the Duryea type wherein long travel
is provided for cushioning draft and buffing
shocks with low forces, together with train slack
that is predetermined independently of and is
shorter than said long travel.
In a well known
form, the Duryea unlderframe embodies a draft
and buffing ‘column that extends longitudinally
substantially the length of the car body and is
10 slidable with respect to the car bolsters, relative
movement between the column and bolsters be
ing cushioned by suitable resilient long travel
cushion gears which may'if desired also embody
frictional elements.
Couplers are mounted for
(Cl. 213-—8)
Fig. 5 is a section taken on the line 5-—5 of
Fig. 2.
Referring now to the construction shown in
the drawings, a part of the bolster construction
at one end of the car is illustrated in Figs. 1a, 5
and 2a and comprises a center brace casting I
of any suitable type and. suitable bolster con
struction 2 extending laterally on either side of
the center brace casting. a .The bolster construc
tion as here shown is cast integrally, although
any other suitable construction nmay be em
ployed. Extending slidably past the bolster con
struction is a draft and bufling column which
also may be of any suitable type‘and which in
the form shown comprises two spaced parallel
and buf?ng columnso as to provide train slack . channels 3, 3 that extend slidably through suit
able openings in the bolster and embrace the
the extent of which is predetermined independ
ently of the travel of the column relative to the casting I, said channels being connected to
bolsters. The present invention relates more gether by suitable top and vbottom cover plates
15 movement of limited extent relative to the draft
particularly to a novel long travel cushion gear
for cushioning the movement of the draft and
buffing column relative to the car bolsters, said
gear being of the type embodying both resilient
and frictional elements.
‘ One of the objects of the present invention is
to provide ‘a novelllong travel cushion gear em
bodying both resilient and frictional elements
which is constructed so as to provide a strong,
rugged device ‘comprising few parts and‘ one
which can be manufactured economically and
is adapted to give long life.
' Another object of the invention is to provide
novel means for ‘limiting the maximum extent
of travel of the column and cushion gear under
heavy draft or bu?ing forces. 7 Other objects of
the invention will appear more fully hereinafter
as the description of the invention proceeds.
One embodiment'of theinvention has been
illustrated in the accompanying drawings, but it
40 is to- be expressly understood that said drawings
are ‘for purposes of _ illustration only and are
45
not to be construed as a. de?nition of the limits
of the invention, reference being had to the
appended claims for this purpose.
In‘ the drawings:
.
Figs. 1 and 1a constitute a plan view in section
of one end of a car underframe embodying the
invention;
50'
I
_
>
Figs. 2 and 2a. constitute a side View in section
on the center line of Figs. 1 and 111.;
Fig. 3 is a section taken on the line 3-‘—3 of
Fig. 2;
/
.
. Fig. 4 is a section taken on the line 4-4 of
2; and
55.
\
O
4 and 5 respectively. Adjacent the bolster con
struction, the draft and bu?ing column is open
at top and bottom and it is preferably strength
ened by the provision of plates 6 extending verti
cally between the ?anges of the channels 3, 3
and suitably secured to said ?anges as by weld 25
ing at 1 (Figs. 4 and 5).
Movement‘ of the draft and bu?‘lng column in
either direction relative to the bolster is limited,
by suitable stop means adapted to engage the
casting I. As shown herein said means comprises inner and outer stop plates adapted to
"
engage the inner and outer faces of said casting,
the inner stop plate being shown at 8 in Fig. 2.
Referring particularly to Figs. 4 and 5, said stop
plate 8 extends laterally across the draft and Cr: in
buf?ng column between the inner faces of the
channels 3, 3 and is welded at both ends to said
channels, said ends being suitably formed to
provide spaces 9 adjacent the inner faces of the
channels for the weld material. Said stop plate 40
thereby constitutes an integral tie member con
necting the channels together and at the same
time a stop plate for limiting longitudinal move
ment of the column relative to the bolster.
Preferably the outer edge of the stop plate which ‘A UK
engages the bolster has a thickening ?ange 10 to
provide greater strength.
Couplers are mounted-at the ends of the draft
and bu?ing column 3, 3 for movement of limited
extent relative thereto to provide predetermined
train slack, and a suitable construction is shown
in Figs. 1a. and 2a. Cheek plates II are secured
to the inner faces of the channels 3, 3 in any
suitable manner as by welding, said cheek plates
being provided with ribs l2 de?ning the edges
2
2,129,549
of slots l3 that are alined with slots M in the
channels 3, 3. A key l5 extends laterally through
the slots, said key being provided at one end
with an enlarged head I6 and at the other end
with a retaining pin I‘! in a slot l8. The shank
of the coupler l9 extends inwardly between the
cheek plates II and is provided with a slot 20
through which said key l5 also extends. The
coupler I9 and key l5 are normally maintained
sitely inclined or tapered edges that are substan
tially parallel to the other two surfaces of the
triangular friction shoes 3|.
In this manner
pockets corresponding in shape to the friction
shoes 3| are formed between the wear plates
32 and the arms 33 in which said shoes are re
tained against longitudinal movement but are
capable of lateral movement, and to support
coupler cushion gear described hereinafter, in
said shoes in the pockets, the lower arm 33 may be
extended laterally under the pockets as shown at
33a in Fig. 4. Preferably the edges of the arms
which position draft forces applied to the coupler
33 adjacent the friction shoes 3| are provided
10 in the position shown in Figs. 1a. and 20 by the
with vertical ribs 35 as shown in Fig. 4 to provide
greater bearing surfaces for said shoes.
Slidably disposed between the upper and lower
15 said column without train slack. In the case of '
arms 33 is a friction casting 36 adapted to trans
buf?ng forces, however, the coupler may move in
wardly relative to the key l5 due to the fact that mit draft and bu?ing forces to the friction shoes
3|. Said casting has substantially the same
the slot 20 is longer than the key and there
after the coupler and key may move inwardly a shape as the horizontal arms 33, being reduced
20 further distance relative to the column‘ 3, 3 the in width at its intermediate portion and having
throughout this portion a substantially rectangu
extent of which is limited as described herein
after. This inward movement of the coupler lar hollow cross section as shown in vFig. 4, the
relative to the column provides train slack of side walls 31 of which are substantially parallel
to but spaced from the inner ends of the fric
predetermined extent.
'
tion shoes 3|. Inwardly and outwardly of this
Suitable resilient means are provided for cush
ioning the inward movement of the coupler I9 intermediate section of reduced width, said side
relative to the draft and bu?ing column. As walls 31 are continued by tapered friction sur
shown in Figs. 1a. and 2a, a spring housing 2| is faces 38 as shown in Fig. l, which surfaces 38
are aligned with the ribs 35 and substantially
disposed between the channels 3, 3 and is provid
ed at each side with laterally extending ribs 22 parallel to the inclined friction surfaces of the
and walls 23 that project through and are welded shoes 3|. The outer tapered side walls 38 termi
in openings in the webs of the channels 3, 3. nate adjacent the corner posts 34 and the cast
Seated in a pocket formed in the housing 2| is ing 36 preferably extends through and is sup
a coil spring 24, said spring being compressed ported in an opening in the center brace casting
l as shown in Fig. 211, said casting 36 preferably JD
e, Cl between inner and outer plates 25 and 26 respec
tively, by means of a bolt 21. The outer plate terminating in a vertical tie wall 39. The inner
26 projects beyond the outer face of the hous
tapered side walls 38 terminate adjacent the
ing 2| and is engaged by a suitable follower plate inner corner posts 34, and inwardly thereof said
28 against which the butt of the coupler I9 bears. casting 36 extends through and is supported in
With this construction, inward movement of the an opening between the arms 33 and terminates
coupler relative to the column 3, 3 results in in a head comprising vertical ribs 40 and a ver
compression of the spring 24 which cushions the tical end wall 4|.
movement of the coupler, and the extent of said
The inner end of said friction casting 38 is
inward movement of the coupler is limited by en
operatively connected to suitable resilient means
gagement of the follower plate 28 with the outer through which draft and buffing forces are trans
face of the housing 2|, the space 29 between said mitted to said casting on outward and inward
follower and housing determining the maximum movement of the column 3, 3 respectively. As
train slack. Further inward movement'of the shown, said resilient means comprising a pair of
coupler under heavy bui?ng forces causes in
coil springs 42 disposed longitudinally between
ward movement of the draft and buffing column the channels 3, 3 and bearing at their outer ends
3, 3 relative to the bolster.
; ,
against a follower plate 43 that engages the end
Figs. 1, 1a, 2 and 2a. further illustrate the wall 4| of the‘ casting 36. Said springs 42 at their
construction of .a novel long travel cushion gear inner ends bear against a follower plate 44 that
operatively interposed between the center brace‘ engages enlarged heads 45 of links 46 that extend
casting I and the draft and buffing column 3, longitudinally through the springs 42 and fol
3 to cushion movement of said column relative lower plate 43 and are connected to the casting
to the bolster, said cushion gear embodying both 36 by suitable means such as pins 41. On out
resilient and friction means. Said cushion gear ward movement of the column, follower plate 44
comprises one or more friction shoes 3| having“ is‘ engaged by suitable stops 48 secured to said
triangularly disposed friction surfaces, one of column, and on inward movement of the column,
which is parallel to the inner face of ‘the adja
follower plate 43 is likewise engaged by suit
cent channel 3 and is adapted to‘ be maintained able stops secured to said column which in the
in frictional engagement therewith as herein
form shown comprise the ends 49 of the wear
after described, wear plates 32 being preferably plates 32.
secured rigidly to the web of the channel for
The operation of this cushion gear will be clear
engagement with the shoes 3|. Said shoes are from the foregoing description. Assuming a draft
held against longitudinal movement by means force applied to the coupler |9 at the end of the
car shown in the drawings, the column 3, 3 is
of an extension from the center brace casting |
comprising upper and lower horizontal arms 33 moved outwardly relative to the car bolster. The
connected together at their inner and outer stops 48 engage the follower plate 44 and com 70
corners by vertical posts 34. Said horizontally press the springs 42 against the follower plate 43
and therefore against the friction casting 36,
extending arms 33 are reduced in width inter
mediate their ends and taper inwardly from their which is thereby moved between the bolster arms
,_ inner and outer ends toward said intermediate 33 to cause the inner tapered walls 38 to engage
portion of reduced width, thereby having oppo~' the adjacent faces of the friction shoes 3| and
are transmitted through the key |5 to the col
umn 3, 3 and cause the outward movement of
,
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2,129,549’
to push the same against the oppositely tapered
ribs 35.
Due to the inclination of these ta
pered engaging surfaces, said shoes3| are urged
outwardly and maintained in frictional engage
ment with the wear plates 32 during outward
movement of the column 3, 3. If the draft force
is large enough, the movement of said draft
and buffing column may'continue until the stop.
plate 8 engages the inner face of the center brace
H) casting I. Thereafter‘the springs 42 return the
parts to. the position shown in the drawings.
. If a buffing force is applied to the coupler ii!
3
I 2. In a railway ‘car, the combination of a body
bolster, a draft and bu?ing column extending
slidably past said bolster and having a friction
surface, a friction shoe having triangularly dlsf -
posed friction surfaces one of which engages the.
friction surface of said column, means secured to;
said bolster and'having oppositely inclined sur-1
faces alternately engaging the other two faces of
said shoe and holding the same against substan#_
tial longitudinal movement, friction means having 10
oppositely inclined surfaces adapted to alternate-v
ly engage said other two faces of the shoe, and
resilient means operatively interposed between
said column and friction means and adapted to.
at the end of the car shown in the drawings, it
?rst causes inward movement of the coupler rela
tive to the draft and buffing column, which in
be compressed against said friction means in one 15
ward movement is cushioned by‘ compression of
or the other direction as said column moves in
the spring 24. This slack movement of the cou
pler‘continues until the follower 28 engages the
casting 2|. Thereafter the column 3, 3 is moved
20 inwardly and the ends 49 of the wear plates 32
come into engagement with the follower plate
43 and compress the springs 42 against the fol
lower‘plate 44. The links 46 pull the casting 36'
inwardly whereupon the outer tapered walls 38
25 engage the friction shoes 3| and push them
against the oppositely tapered ribs 35 of the hori
zontal arms 33, whereby'said shoes are thrust out
wardly and maintainedgin frictional engagement
with the wear plates 32. - This inward movement
of the draft and buffing‘ column may continue, if
the buffing force is great enough, until the outer
stop plate (not shown)"engages the outer face
of the center brace casting I, and thereafter the
springs 42 return the parts to- the position‘ shown '
35 in the drawings.
.
It will be understood that the angles of the
tapered surfaces may be varied under different
conditions and that the wear‘plates 32 may be
tapered or not as desired. For example, the wear
plates 32 are shown ?at and the angle of inclina
tion of the. tapered surfaces is relatively large,
the frictional resistance being, however, great
enough to snub the return of the draft and buff
ing column to its normal position as well as sup
plementing the compression of the springs in
cushioning draft and buf?ng forces.
While only one embodiment of the invention
has been described and illustrated in the draw
ings, it will be understood that the invention is
capable of a variety of mechanical embodiments
and that changes may be made in the form, de
tails of construction and arrangement of the
parts without departing from the spirit of the in
vention. Reference is therefore to be had to the
appended claims for a de?nition of the limitation
of the invention. '
What is claimed is:
1. In a railway car, the combination of a body
bolster, a draft and bufling column extending
60 slidably past said bolster and having a friction
surface, a friction shoe having triangularly dis
posed friction surfaces one of which engages said
column surface, means secured to said bolster
and having oppositely inclined surfaces alter
V65 nately engaging the other two faces of said shoe
one of said inclined surfaces holding said shoe
against substantial longitudinal movement in one
direction and the other holding said shoe against
substantial longitudinal movement in the other
70 direction, and means including a resilient element
operatively interposed between said shoe and col
umn and adapted to urge said shoe against one
inclined surface when the column moves in one
direction and against the other inclined surface
76 w en the column moves in the opposite direction.
one
3. or
Inthe
a railway
other direction.
car, the combination of a body
'
bolster, a draft and buffing column extending
slidably past said bolster and having a friction 20
surface‘, a friction shoe having triangularly dis"
posed friction surfaces one of which engages said
column surface, means operatively connecting
said shoe and said bolster for holding said shoe;
against substantial longitudinal movement but 25
permitting lateral movement, a friction member
movable in both directionsand having oppositely
inclinedsurfaces adapted to alternately engage
the other two faces of said shoe, and resilient
means operatively interposed between said col-‘i 30
umn and friction member and adapted to urge
said member in one or the other direction as said
column moves in- one or the other direction.
_
4. In a railway car, the combination of a body
' bolster, a draft and bu?lng column extending 35
slidably past said bolster and having a friction
surface, a friction shoe having triangularly, dis
posed friction surfaces one of which engages said
column surface, means secured to said bolster and’
having oppositely inclined surfaces alternately
40
engaging the other two facesof said shoe and
holding thesame against substantial longitudinalv
movement, a friction member movable in both di-v
rections and having oppositely inclined surfacesv
adapted to alternately engagethe other two faces 45
of said shoe, and resilient means operatively in
terposed between said column and friction meni
ber and adapted to urge said member in one or the
other direction as said column moves in one or
the other direction.
5. In a railway car, the combination of a body
bolster, a draft and buffing column extending,
slidably past said bolster and having a friction».
50
surface, stationary means having oppositely iii-.
clined surfaces, movable friction means having 55
oppositely inclined surfaces corresponding to thev
inclined surfaces of said stationary means, said;
inclined surfaces together with the friction sur-i
face on said column forming a substantially tri-,
angular pocket, a substantially triangular fric
tion shoe in said pocket, and resilient means oper
atively interposed between said column and said.
movable friction means and adapted to urge said
movable means in one or the other direction as
said column moves in one or the other direction, 65
6. In a railway car, the combination of a body
bolster, a draft and bufiing column extending
slidably past said bolster and having a friction‘
surface, a pair of relatively movable members
having normally aligned surfaces forming a 70
pocket with said friction surface, each member
having oppositely inclined surfaces,’ a friction
shoe in said pocket having a face engaging said
friction surface and other faces corresponding
to said inclined surfaces, and resilient means 75
2,129,549:
compressed on movement of said'column against
said pockets‘ and each having a face'engaging
one of said members and thereby urging said one
member to move relatively to the other.
'7. In a railway car, the combination of a body
bolster, a draft and bu?ing column‘ extending
slidably past said bolster and having a friction
one of said friction surfaces and faces corre
sponding; to ‘said inclined surfaces, means con
surface, a pair of- stationary spaced memberswa
movable member slida‘bie: between said spaced
members, said three members having substantial
ly aligned edges comprising oppositely inclined
surfaces de?ning a pocket with‘ said friction sur
face, -a friction shoein‘ said: pocket 'havingja face
engaging 'said friction surface‘ and ‘other ‘faces
corresponding to said inclined ‘surfaces','"=and'resil
ient means compressed onmovement'of said col
umn against said’ movable member and thereby
urging said movable member to move'between
said stationary members. '
r
_
..
‘
8. In a railway car, the combination of a body
‘.10 bolster, a draft and bu?ing' column ‘extending
slidably past-said bolster and having a friction‘
surface, a pair'of stationary spaced membersya
movable member slidable between said spaced
members, said‘ three members having substan
tially aligned?edges comprising oppositely in
clined surfaces de?ning a pocket with said fric
tion surface, a friction'shoe in‘said pocket hav-'
ing a face engaging said friction ~surface and
other faces corresponding tosaid inclined sur
faces, and resilient means compressed against
said movable member on movement of‘ said col
umn and thereby urging said ‘movable. member
to move between said stationary members, said
lower stationary member having extensions un
der said pocket to support said shoe.‘
9. In 1a railway car, the combination of a body
bolster, a draft and buffing column comprising
spaced members extending‘v slidably 'past said
bolster, each of said members having‘a friction
40 surface, a pair of relatively movable »members
disposed between said spaced members and hav
ing corresponding portions of reduced width ad
jacent said frictionv surfaces to form pockets,
necting-one of said relatively movable members
to the bolster, and resilient means operatively
connectedto the other of said relatively movable
members for urging it in one direction on buff
and in the other direction on draft.
10. In a railway car, the combination of a body
bolster, a .draft and buffing column comprising
spaced members extending slidably past said
bolster and each having a friction surface, spaced
arms extending from said bolster between said
members, a movable element disposed slidably
between said arms, said element and arms hav
ing corresponding portions of reduced width ad
jacent said friction surfaces to form pockets
therewith, each of said pockets having oppositely
inclined surfaces, friction shoes one in each pock
et' and each having ‘a face engaging one of said
friction surfaces and faces corresponding to said
inclined surfaces, and resilient means operatively
interposed between said column and movable
element and compressed on movement of said
column.
-
,
‘
11., In‘ a’frailway car, the combination of a body
bolster, a- draft and bu?ing column comprising
spaced :members extending slidably past said
bolsterand each having a friction surface, spaced
arms" extending from said bolster between said
members, a movable element disposed slidably
between said ‘arms, said element and arms having
corresponding portions of reduced width adja
cent saidfri'ction surfaces to form pockets there
with, eachofsaid pockets having oppositely in
clined surfaces, friction shoes one in each pock
e1:~ and ‘each having a face engaging one of said
friction surfaces and faces corresponding to said
inclined surfaces, and resilient means operatively
interposed between said column and movable ele
ment and compressed on movement of said col
umn, one of said arms having extensions under
said pocketsto support said shoes.
each'of said pockets having oppositely inclined
surfaces, a pair of friction shoes one in each'of
OTI-IO C.' DURYEA.
35
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