close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2108653

код для вставки
Feb. 15, 1938.
2,108,653
G. F. COUCH
RAILWAY TRUCK
Filed Nov. 2, 1934
5 Sheets-Sheet 1
/
/
J7
' ,
50
a4
32' 1g 29”? gzPV
F v
7 Feb. 15, 1938.
G‘ F COUCH‘
RAILWAY TRUCK
.
2,108,653
'
Filed Nov. 2, 1.954
3 Sheets-Sheet 2
Feb. 15, 193$.
G. F. COUCH
2,10,653
RAILWAY TRUCK
Filed NOV. 2, 1934
3 Sheets-Sheet 3
Patented
airs
e. 1, i3
2,108,653
Glenn F. Couch, Rochester, N. lY., assignor to
The Syxnington-Gould Corporation, Rochester,
N. Y., a corporation of Maryland
Application November 2, 19341, Serial No. 751,2493
13 Claims. (Cl. 105-1971)
This invention relates to railway trucks and, to the frames being that under the condition of
5
more particularly, to the construction of the side
an increase in the lading so that the semi-elliptic
frames, bolsters and spring nests thereof for sup
porting such bolsters from said frames.
spring bears against the helical spring caps.
Figure 4 is a view corresponding to Figure 3,
but showing the position of the bolster when the 5
rI'he principal object of my invention, gener
ally considered, is the provision of a railway truck
in which the side frames are readily detachable,
and in which the bolster is supported by springs
which cooperate with one another in order to
10 increase the capacity of the arrangement as the
load is increased.
‘
.
Another object of my invention is the provi
sion of a railway truck in which the bolster is
supported from the side frames by both coil and
i5 leaf springs, the central portion of the leaf spring
being at approximately the center of the frame
and the end portions disposed either longitudi
nally or laterally thereof, and the coil springs
being vertically disposed with respect to portions
car is loaded still further, or until the bolster sup
porting casting contacts with the extended tops
of the helical spring caps.
Figure 5 is a view corresponding to Figure 4,
but showing the ?nal stage in which the helical ‘l0
springs have been pushed away from their con»
tact with the semi-elliptic spring after contact
between the spring caps and bolster supporting
casting.
Figure 6 is a view corresponding to Figure 1, 15
but showing another embodiment of my inven-,
tion.
'
Figure 7 is a fragmentary transverse sectional
view of the truck on the line 'l—'l of-Figure 6,
20 of said leaf spring between the center and end
portions so that said leaf spring assists in the
actuation of said coil springs.
A further object of my invention is the provi
sion of a railway truck in which the ends of the'
looking in the direction of the arrows.
q~ bolster are received in castings or saddles which
there is shown a portion of a railway vehicle or 25
are, in turn, supported by leaf or semi-elliptic
springs therebeneath and coil or helical springs,
vertically disposed with respect to intermediate
portions of said leaf springs, so that said bolster
30 is initially supported by said leaf springs until
they are de?ected a predetermined amount to
actuate said coil springs.
A still further-object of my invention is the
provision of a railway truck in which the bolster
is supported by both coil and leaf springs, and in
which the bolster may angle in a horizontal plane
with respect to the associated frames.
Other objects and advantages of the invention
relating to the particular arrangement and con
40 struction of the various parts will become appar
ent as the descriptionproceeds.
Referring to the drawings illustrating my in
vention, the scope whereof is de?ned by the ap
pended claims:
45
Figure 1 is a fragmentary side elevational view
of a railway truck embodying my invention, the
position of the bolster being that when it is sup
ported entirely by the semi-elliptic springs under
50
light car conditions.
Figure 2 is a fragmentary plan of the truck
shown in Figure 1.
Figure 3 is a fragmentary longitudinal section
and ?rst considering the embodiment of my in
vention illustrated in Figures 1 to 5, inclusive,
truck comprising side frames I, only one of which
is illustrated, each side frame having a compres
sion member or portion 2, a tension member or
portion 3, and spaced connecting struts, bolster
guide columns, or portions t spacing intermedi- 30
ate portions of said compression and tension»
members, and leaving a bolster or window open
ing 5 therebetween.
The tension members is formed with hori
zontal shelves or abutment portions ii adjacent 35
the junctions with the guide columns and nor
mally engaged by the ends of the leaf or semi
elliptic spring ‘l disposed in the bolster opening
5 and, in turn, supporting a frame or saddle
member 8 having a downwardly opening pocket 40 .
9 receiving the upper portion of the semi-elliptic
spring band in, thereby preventing undesired dis
placement therebetween.
The saddle member or casting 8 has a normally
horizontal portion M on which rests the adja- 45
cent end portion of the bolster i2 and side por
tions 63 normally embracing said end portion
therebetween. Rear guide lugs ill only are pro
vided on said bolster.
The saddle or casting t is guided between the 50
guiding portions it of the guide columns d by
extending between the flanges it of said guide
al View of one of the truck frames on the line ' columns and having outstanding rib or ?ange
portions ll adapted to slide on the transverse
‘ 3-3 of Figure 2, looking in the direction of the
55 arrows, the position of the bolster with respect
20
Referring to the drawings in detail, like parts
being designated by like reference characters,
guiding surfaces of the guide portions i5.
\
55
2
2,108,658
The tension member 3 is formed with up
wardly opening pockets l8 on the lower web l9
thereof receiving coil or helical springs 20, only
one of which is illustrated, which support spring
caps 2| upwardly extended to underlie the saddle
casting 8 and be received in downwardly opening
pockets 22 thereon. Each spring cap 2| is aper
tured, as indicated at 23, to receive the semi
elliptic spring 1 which extends therethrough and
10 through the inner webs 24 of the guide columns
so as to reach the supporting shelves 6.
The
relation between the‘ springs, spring caps and
bolster saddle is such that under light car condi
tions the bolster is supported by the semi-elliptic
15 springs 1 only, the saddle 8 not engaging the
extended spring caps 2|, and the elliptic springs
caps 2|, the coils are compressed approximately
one-half this amount, the arrangement between
the coil and semi-elliptic springs being thus tem
porarily a series-parallel arrangement.
As the bolster moves further downward, the ‘
saddle casting 8 contacts with the extended tops
of the helical spring caps, as shown in Figure 4,
whereupon both types of springs are de?ected,
upon further downward movement of the bolster .
exactly the sameamount until the ?nal stage 10
shown in Figure 5 is reached, in which the helical
spring caps have been pushed away from their -
contact with the semi-elliptic spring.
It is believed that this is an entirely new ar
rangement of differential spring travel, starting
?rst with a simple ‘semi-elliptic spring serving
to support the bolster, then picking up helical
springs and moving them only 'half as fast as
the semi-elliptic spring, and ?nally progressing
' Although I'do not show the ends of a frame, I
20 contemplate the provision of journal boxes in .' to a straight parallel arrangement. This com 20
tegral therewith, such journal boxes and end bination provides for the gradual building up of
spring capacity at a faster ratio than that of
portions not being shown as they may be of con
_ventional construction. Provision for out-of ' either a'straight series or straight parallel spring
squareness or ?exibility of the truck is effected arrangement, and without the sudden augmenta
by connection between the bolster and frames tions of capacity characteristic of stepped spring
groups where the shorter. springs are placed under
or supporting saddles, such ?exibility being pro
.
vided by forming the surfaces 21 of the bolster, initial compression.
Referring now to the embodiment of my in
which are disposed between and normally en
gaged by the surfaces 28 of the saddle or casting vention illustrated in Figures 6 and 7, there is
shown an arrangement which amounts to an 30
30 8, cylindrical, and the surfaces 28 coaxial there
with, with the axis of said surfaces inside of the inversion of the embodiment of Figures 1 to 5,
center line of the side frame so that the bolster inclusive, as far as the nests of springs is con
can be withdrawn, said axis being also desirably cerned. As in the ?rst embodiment, I show a
on the central longitudinal vertical plane of the portion of a railway truck comprising side frames
IE‘, .only one of which is illustrated, each side 35
35 bolster.
The surfaces 21 and 28. terminate at their outer frame having a compression member 2“, a tension
member 3'1, and spaced connecting struts, bolster
ends in portions 29 and 30 which together pro
guide columns, or portions 4‘ spacing inter
vide generally cylindrical pockets receiving lock
ing members 3|. Each locking member desirably mediate portions of said compression and tension
members, and leaving a window or bolster open 40
40 comprises a normally vertical cylindrical body 32
and a lower laterally extending lug 33, and is ing 58 therebetween.
In the present embodiment, the side‘ frames
desirably initially inserted with the lug extending
outward or away from the bolster, the saddle 8 may be of conventional character, or as shown in
being provided with an elongated aperture 34’ my Patent No. 1,652,808._ Resting on the tension
members of the frames is a spring plank 36, as 45
45 adapted to receive said body and lug portions.
When the locking member 3| has been inserted distinguished from the ?rst embodiment which
so that the ‘lug lies above the horizontal portion is illustrated without a spring plank. Said plank
' H of the saddle, the locking member is then has corrugations 31 providing‘grooves or pockets
turned, so that the lug points inward or toward receiving the auxiliary reinforcements 38 of the
'
the
other locking member (not illustrated), while side frame and serving to interlock'the spring 50
50
the bolster is elevated, so that when the bolster plank to said frame. Resting on the plank is a
is dropped to position,'as shown in Figure 1, the spring pan or abutment casting 38' desirably
lug portion 33 is received in a pocket 35 in the formed with‘ corresponding pockets or channels 39
lower side of the bolster and securely 'held in to receive the embossments 31 on the plank for '
maintaining the desired relationship. The pan 55
-55 place. Su?lcient clearance is provided between
the locking members 3| and the bolster to allow 38' is formed with a generally central abutment
portion 40 providing an upwardly opening pocket
for the desired ?exibility or angling in a horizon
4| receiving the spring band "I3 of a semi
tal plane while preventing undesired displace
elliptic spring '|a serving to initially support under I
ment or withdrawal of the bolster.
light
load conditions the associated bolster |2a 60
From
the
foregoing
disclosure,
it
will
be
seen
60
that I initially provide for the support of the by engaging abutment portions 6EL thereon.
The bolster is formed with downwardly open- _
bolster by abutments 6 disposed toward the ends
'| not engaging the bosses 25 on the helical spring
engaging webs 26 of the spring caps 2|.
‘
of the frames, thereby greatly decreasing the
bending moments on said frames. As the semi
elliptic spring in each frame is de?ected upon an
increase of the load applied to the bolster, the
semi-elliptic spring bears upon the helical spring
ing pockets l8a on the upper web l5“ thereof re
ceiving coil or helical springs 20“ which pass
through the lower web 42 of the bolster and 65
whose axes desirably lie in the central longitu
dinal vertical plane of said bolster and rest on
caps 2 l, as illustrated in Figure 3, at points inter- ’ 'lower spring caps 2|‘i downwardly extended, and
>mediate its center and ends. During this stage, with their lower ends ?tting in upwardly open
70 the helical springs 20 are not de?ected to the ing pockets 228L on the pan 38'. The lower sur 70
same degree as the semi-elliptic spring ‘I, because faces of said caps are desirably initially spaced
the latter is temporarily a double lever of the from the supporting surfaces of the pan and the
second class. In other words, if the spring band upper ends of said springs 2|!”- initially spaced
from the lower surfaces of the upper web l9‘I of
I0 is depressed one-quarter inch, after engage
the
bolster.
ment
between
the
semi-elliptic
spring
1
and
the
75
355
Each cap 2!“ is apertured, as indicated at 23“,
to receive the semi-elliptic spring or springs ‘is
which extends therethrough to reach the abut
ments be. The relation between the springs,
spring cap, bolster and pan is such that under
light car conditions, as illustrated, the bolster is
‘supported by the semi-elliptic springs at each
end only, the springs Elle not engaging the bolster
but the caps 2!“ being supported on the semi
elliptic spring and held out of supported engage
ment with the pan it.
As the semi-elliptic spring ‘is‘ is de?ected upon
an increase of the load applied to the bolster,
the upper web of said bolster approaches the
15 .tops of the originally free helical springs the, but
the latter recede downward from the descending
bolster at about one-half the bolster speed be
10
ing de?ected a predetermined amount, actuates
said spring means in series-parallel therewith
until positive engagement is effected between the
bolster and said spring means, so that said bol
ster is supported by said spring and spring means
acting in parallel.
3. In a railway trucir, in combination, a side
frame formed with compression and tension
members spaced at intermediate portions by
guide columns; leaving a bolster opening there 10
between, a spring supported by said frame, spring
means disposed above said ?rst~mentioned spring
and so arranged that the spring serves to sup
port an associated bolster under light load, and
upon being de?ected a predetermined amount 15
actuating said spring means in series-parallel
therewith until direct engagement is effected be
cause their inverted caps or seats are temporar
tween the bolster and said spring means, so that
ily resting on intermediate points on the upturned
said bolster is supported by said spring and
semi-elliptic spring.
spring means acting in parallel.
When the bolster top web touches the helical
‘springs 20a, but before the helical seat castings
4. In a railway truck, in combination, av side
frame formed with compression and tension
touch bottom, we have a series parallel arrange
ment between the springs comparable with that
members spaced at intermediate portions by
25 illustrated in Figure 3, where the semi-elliptic
springs act as double levers of the second class,
resulting in compression of the cells at a rate
approximately one-half the ‘rate of deflection
of the semi-elliptic spring.
When the helical seat castings touch bottom,
'
guide columns, leaving a bolster opening therebe
tween,'a semi-elliptic spring disposed in the lower ‘
portion of said opening and with its ends extend
ing beneath said guide columns, helical springs
vertically disposed with respect to said semi
elliptic spring, and a bolster initially supported
on said semi-elliptic spring only, whereby the
then we have parallel action between all the
semi-elliptic spring, after being de?ected a pre
springs because contact between the semi-ellip
tic spring and the helical spring seats is broken
the ends of said helical springs for actuating the
and all springs de?ect at the same rate until ?nal
closure.
.
In the present embodiment, the bolster is pro
vided with conventional outer guide lugs tit and
inner guide lugs ita which cooperate with the.
bolster guiding portions H511 in a conventional
40 manner for maintaining the desired relation be
tween the bolster and frame, as will be under
stood.
Although preferred embodiments of my in
vention have been disclosed, it will be under
45 stood that modi?cations may be made within the
spirit and scope of the appended claims. It will
also be understood that both embodiments may
involve journal boxes integral with or separable
from the end portions of the frames, as may be
50 desired.
I claim:--—
1. In a railway truck, in combination, a side
20
30
determined amount, serves as a lever acting on
same for a predetermined distance, after which
positive engagement is e?ected between the
bolster and said helical springs, so that said
bolster is supported on said semi-elliptic and
helical springs acting in parallel.
5. In a railway truck, in combination, a side
frame formed with compression and tension 40
members spaced at intermediate portions by
guide columns, leaving a bolster opening there
between, a semi-elliptic spring supported by said
frame, a saddle supported by said spring, helical
springs, spring caps extending upwardly from 45
said helical springs, normally spaced from abut
ment portions on said saddle, and apertured for
the passage of said semi-elliptic spring, said heli
cal ‘springs being arranged below said semi
elliptic spring, whereby the semi-elliptic spring 50
and saddle serve to support, an associated bolster
‘under light load, and upon said spring being de
?ected a predetermined amount, said spring di
members spaced at intermediate portions by guide rectly engages abutments on said helical spring
columns, leaving a bolster opening therebetween, caps for actuating said helical springs in series
spring means disposed in the lower‘ portion of ' parallel with said semi-elliptic spring until said
said opening, other spring means vertically dis
spring caps engage said abutment portions and
frame formed with compression and tension
posed with respect to said ?rst-mentioned spring
means, and a bolster initially supported on said
the bolster is supported by said semi-elliptic and
helical springs acting in parallel.
60 ?rst-mentioned spring means only, whereby said
6. In a railway truck, in combination, a side
?rst-mentioned spring means, after being de
?eeted a predetermined amount, actuates the
frame formed with compression and tension
members spaced at intermediate portions by
guide columns, leaving a bolster opening there
other spring means for a predetermined distance,
after which the bolster positively actuates said
65 other spring means so that it is supported by both
of said spring means acting in parallel.
2. In a railway truclnin combination, a side
frame formed with compression and tension
members spaced at intermediate portions by
guide columns, leaving a bolster opening there
between, a spring supported by said frame, spring
means disposed below said ?rst-mentioned spring
and between said guide columns and so ar
ranged, that the spring serves to support an as
75 sociated bolster under light load, and upon be
between, a spring plank received in said opening
and supported on said tension member, a spring 65
pan disposed on said plank, a semi-elliptic spring
with a band resting on said pan and extending
transversely of the frame, a bolster disposed
above said semi-elliptic spring, and normally en
gaging the ends thereof for being supported sole
ly‘thereby under light load, said bolster having
downwardly opening pockets, coil springs dis
posed in said pockets, lower spring caps support
ing said coil springs and, in turn, supported on
said semi-elliptic spring under light load, said
4
2,108,658
coil springs under light load being spaced from
the upper wall of said bolster and said caps being
then spaced from supporting surfaces of said
pan, and the initial clearances being such that
upon the semi-elliptic spring being de?ected a
predetermined amount it causes the coil springs
to engage the upper wall of the bolster for actu
ation in series-parallel therewith, resulting ?nal
ly in the spring caps engaging supporting sur
tion take up the clearance and bring said helical
springs into action.
11. A spring nest adapted for insertion in the
faces on the pan, to cause said coil springs to
bolster‘ opening of a railway vehicle side frame
comprising a set of leaf springs and a set of heli
then act in parallel with said semi-elliptic spring.
cal springs with caps, said sets being vertically
7. In a railway truck, in combination, a side
frame formed with compression and tension
members spaced at intermediate portions by
guide columns, leaving a bolster opening there
between, a semi-elliptic spring supported by
means of said tension member, coil springs sup
ported one between each end and the center of
said semi-elliptic spring and vertically disposed
20 with respect to said spring, a bolster, a bolster
supporting saddle casting upheld under light load
by said semi-elliptic spring only and by all of
25
diate the centers and ends, and said leaf springs
passing through apertures in said caps, with suf
ficient initial clearance provided, so that said
leaf springs initially act independently of the
helical springs and after a predetermined deflec
disposed with respect to one another and ar
ranged so that clearance is provided between the
bolster and one of said sets and between said sets
so that under light load one set only acts, then as 15
the load increases the clearance between the sets
is taken up and both sets act in series-parallel,
and, upon increasing the load still further, said
clearance with respect to the bolster is taken up
so that both sets act in .parallel.
_
frame formed with tension and compression
said springs upon sumcient increase in the
members spaced at intermediate portions by
bolster load.
guide columns to leave a bolster opening there? '
8. In- a railway truck, in combination, a side
frame formed with compression and tension
members spaced at intermediate portions by
20
12. In a railway truck, in combination, a side
between, spring means supported by said tension 25
member, a casting initially supported by said
spring means, said casting having side portions,
a bolster supported by said casting and formed
with lugs overlying said side portions for limiting
relative movement therebetween, additional 30
a casting with a downwardly opening Docket re- , springs disposed beneath said spring means and
provided with spring caps initially engaging the
ceiving the upper portion of said band and ini
?rst-named spring means'and means, on said
tially supported by said spring, said casting hav
guide columns, leaving a bolster opening there
between, a semi~elliptic spring supported by said
30 tension member and provided with a spring band,
C
0
Cd
ing side portions, a bolster resting on said cast
cap which extend upwardly and underlie a por
ing and formed with lugs for limiting relative
movement therebetween, and coil springs disposed
beneath said semi-elliptic spring and provided
with spring caps through which said semi-elliptic
tion of said casting, said extensions being also 35
initially spaced therefrom, whereby said last
mentioned springs come into action for the sup
port of said bolster when su?icient additional load
spring passes, which caps extend upwardly to
is applied thereto.
'
40 underlie surfaces on the casting so that, when
13. In a railway truck, in combination, a side 40
compression and tension members spaced at in
termediate portions by guide columns, leaving a
bolster opening therebetween, said tension mem
ber having upper and lower webs, said upper web
being apertured adjacent said guide columns to
receive helical springs and permit them to be
a casting initially supported by said spring means, 45
a bolster supported by said casting, side por
frame comprising tension and compression mem
sufficient additional load is applied on the bol
iter, said coil springs come into action for the ‘bers spaced at intermediate portions by guide
columns to leave a bolster opening therebetween,
support thereof.
I
-.
9. A side frame for railway trucks formed with spring means supported by said tension member,
supported on said lower web, said tension mem
ber also having shelves disposed longitudinally
of the frame, beyond said bolster opening, for
Cl Cl
60
tions on said casting interposed between the
guide columns and bolster, lugs on said bolster
overlying said side portions for limiting relative
movement between the bolster and casting, an 50
additional spring disposed beneath said spring
means and provided with a spring cap having a
lower portion thereof interposed between said
springs and supported by said additional spring;
direct support of the ends of a leaf spring.
10. A‘ spring nest adapted for insertion in the said spring cap having an upper portion there
bolster opening of a railway vehicle side frame of underlying and normally spaced from said
casting so that when sufficient additional load is
comprising a set of leaf springs and a set of hell
cal springs and associated caps, characterized by» supplied to the bolster said additional spring
the helical springs being vertically disposed with comes into action for the support thereof.
respect to portions of said leaf springs interme
c
/
GLENN F. COUCH.
60
Документ
Категория
Без категории
Просмотров
0
Размер файла
901 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа