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Патент USA US2124124

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July 19, 1938.
.
H.
SC'HOEPF Er AL
‘
'
2,124,124
METHOD .AND APPARATUS FOR MAINTAINING ADJACENT
RAILWAY CARS ON A LEVEL PLANE
Filed Jan. 16, 1935
2 Sheets-Sheet .1
20
PRESSURE
SWITCH
2
32
29
INVENTORS
7/15017026 1/. JCHOEPF.
zwwp M- B/7'6H/E.
m 4 . “0K1! e
_ ATTORNEYS.
",
July '19, 1938.
I
T. H. SCHOEPF ET AL
METHOD AND APPARATUS FOR MAINTAINING
ADJACENT
RAILWAY CARS ON A L EVEL PLANE
Filed Jah. 16, 1935
2,124,124
2 Sheets-Sheet 2
INVENTORS
“1
771502025 H. Jc/IOEPF 1
.D?y/p
2176/1/52
W
ATTORNEYS
Patented July 19, 1938 '
2,124,124
UNITED STATES PATENT OFFICE
2,124,124’
METHOD AND arrana'rcs FOR MAINTAIN- '
‘ ING
ADJACENT
LEVEL PLANE
RAILWAY CABS ON A
Theodore H. Schoepf and David M. Ritchie, Cin
cinnati, Ohio, assignors to The Cincinnati Trac
tion Building Company, Cincinnati, Ohio, a
corporation of Ohio
Application January 16, 1935, Serial No. 2,074
20 Claims.
(Cl. 105-199)
This invention relates to a means and method
with cross~over hydraulic controls. This view is
shown in connection with an articulated car, but
the same principle is applicable to other types of
adjacent cars.
Figure 5 is a modi?cation of that portion of the
of maintaining the equilibrium of railway cars.
It is the object of this invention to provide a
pendulum control for controlling the application
6 of hydraulic pressure to the side bearings of
railway cars in order to resist the rocking of
the cars and to bring the cars back with their
?oors in a horizontal plane, in order to minimize
circuit of Figure 2 including the ?eld discharge
resistance, showing the substitution of a capaci
tor.
rocking and swaying.
ii)
, Referring to the drawings in detail, and par
ticularly to Figure l, the numeral I is a car body 10
suitably supported upon a truck or trucks. This
body is provided with side thrust bearings 2 pro
vided with a connecting rod or piston rod 6 which
It is'the object of this invention to provide
especially for interconnecting the hydraulic sys
tem applied to the side bearings of the same car
or adjacent cars to maintain the platform of the
car or the platforms of adjacent cars in a hori
extends into a cylinder 3 and is connected with a
piston comprising a head 4 or a head 5. The side 15
bearings 2 are mounted on the under side of the 1.
l5 zontal plane, or to maintain the platforms of
adjacent cars in the same plane. This latter
feature is particularly advantageous in connection
with cars that are articulated on a. common truck
and having a common passageway associated
20 with a common truck and platforms of the ad
jacent cars. _
It is the object to provide an interconnected
hydraulic system associated with the respective
side bearings so that hydraulic pressure can be
25 applied to resist the downward movement of a
car body on one side and simultaneously to apply
hydraulic pressure to push the body down on the
other side.
'
'
body remote from and at opposite sides of the
center thereof, and the cylinders 3 are mounted
upon the truck. This truck is generally desig
nated 1._ Any form of truck may be employed.
20
The body may be mounted upon the center
bearing of the truck in the usual manner, or it
may employ a trunnion in an articulated car, such
as the trunnion designated 8. This trunnion is
mounted in a trunnion socket or hearing plate 9-, 25
suitably mounted upon the truck ‘I in any desired
manner. The details of this mounting are not
important.
‘4
It is the object to provide means for quickly
30 reversing this action, and means of determining
Returning to the side bearings and the hy
draulic control therefor, when ?uid pressure is
the degree of pressure that will be applied in re- ' applied through the pipe ID to the cylinders 3, 30
sponse to the ‘degree of rolling and rocking that the piston head 4 and its connecting rod 6 ascend
takes place in the car.
‘ It is a further object to provide a means and
3;, method of returning the car quickly from a posi
' tion of .extreme rocking, as well‘ as resist the move
ment of the car into such an extreme position.
Thus this invention not only serves to prevent ex
trenie rocking but is adapted to correct the rock
19 ing that takes places so quickly that it cannot
be prevented.
It is a special‘ object of this invention to pro
vide a pendulum control of electric circuits which,
- in turn, control hydraulic valves and which also
[5 control the application of the hydraulicpressure
' through electrical means.
-
-
Referring to the drawings:
I
Figure 1 is a diagrammatic view of one end of
one car showing the hydraulic and electrical con
;@ trol system.
'
Figure 2 is a modi?ed form of electrical and
_ hydraulic control shown diagrammatically.
Figure 3 is a detail view of a modified form of
the pendulum control.
,5
Figure 4 is a plan view'of, two adjacent cars
‘ in the right hand cylinder (Fig. 1) while the
piston head 5 and its connecting rod 6 descend in
the left‘ hand cylinder; when pressure is applied
through pipe H, the head I and its connecting
rod 6 descend and thehead 5 and its connecting
rod 6 ascend in their respective cylinders 3.
In _
other words, the application of pressure through
the pipe II will either resist the downward move 40
ment of the side bearing member 2 or elevateit,
while pressure through the pipe I 0 will permit
the side bearing member to descend by drawing
the piston head I with the side bearing member 2
downwardly. The exact details of this construc 45
tion are not'important so long as the principle
involved is employed of alternately applying pres- '
sure to resist the side bearing downward move
ment or to elevate the side bearing‘, and of apply
ing- pressure to remove that resistance or to 50
cause the side bearing member to descend. '
_
The pipe III on the right side is connected to
the lower side of a cylinder 3 and on the left side
to the upper side of a cylinder 3 while the pipe Ii
is connected on the right side to the upper side
2
2,124,1a4
of a cylinder 3 and to the lower side of a cylinder
3 on the other side so that when the thrust’ on
one side is upward, it is downward on the; opposite
side. These two groups of pipes are’c’onnected
to feed pipes respectively designated l2 and I3.
The pipe l2 communicates with'the chamber E4
shown in this ?gure it is possible to adjust the
pressure applied hydraulically, according to the
degree of swing or roll of the car. The pendulum
35 has the same contact weight 38. It is adapted
to engage with the contacts 31 and 38, which con
trol the opening. of the hydraulic control valves
in the hydraulic control valve l5.v This chamber 41 and-48. The contact 31 is connected by the
is formed by the walls of the valve l5, and by wire 62 to the‘ solenoid coil 43 surrounding the
partitions l5 and i1. Partition I6 has the port
l8 and partition H the port l9. The spring
core 49, which constitutes the valve stem con
nected to the valve 50 in the valve casing 41. 10
pressed valve member 29 controls the port H9.
The spring 2| cooperates to that end. A valve
This valve member 50 controls the port 5| in the
stem 22 connects the valve 29 to the valve mem- ber 23, which controls the port I8.
‘
mits the ?ow of ?uid through the valve 41. The
coil 43 is connected at 53 to the line 54, which in
turn, is connected to-one side of the battery 40.
The other side of the battery is connected by the
line 39 to the pendulum 35. The solenoid core
d9 also carries the switch blades 55 and 56. The
function of these switches 55 and 56 will be de
20
scribed later.
The pipe l3 communicates with the chamber ill
in the hydraulic control valve l5a. which is similar
to the hydraulic control valve l5, and which
operates in the same manner. The chamber M of
the valve l5a corresponds to the chamber Id of
20 the valve l5 and the other correspondingly num
bered parts of the valve l5a likewise correspond
to similarly numbered parts of the valve I5.
A controlling member, consisting of a stem Eli
and solenoid core member 25, operates in the
25 upper chamber 26 of the valve I5 and also in the
valve [5a. The lower chamber 21 of each valve
communicates with the pressure side of the pump
15
through the common connection comprising pipe
28. The chamber 26 of each valve communicates
30 with the suction side of the pump through the
common connection comprising pipe 29. The
pump 30 suppplies pressure to the pressure tank
3!‘ and to the line 28.
It is controlled, in its
operation, through the hydraulic pressure switch
35 32, in order to maintain an even pressure.
This
switch is adapted, upon’ the production of prede
termined pressure, to shut o? the electrical motor
which drives the pump, and upon decrease of the
pressure to connect the pump motor to an electri
40 cal circuit so that the pump is driven. The pump‘
30 draws its supply from the discharge tank 33,
partition 52in 41.‘ The opening of this port per
Whenthe contact member 36 of the pendulum
35 engages the contact 38 it brings into operation
the line 46, the solenoid coil 65 and the line 44,
which- is connected at 53 to the line 54 that is con
nected to one side of the battery 40. The other 25
side of the battery is connected in circuit through
the line 39- and contact weight 36. The solenoid
core and valve stem 51 carries the valve member
53, .which controls the port 59 in the partition 60
of the valve 48.
'
30
The valves 41 and 48 are thus able to control
the application of hydraulic pressure from the
hydraulic pressure source, designated 30. For
instance, when the weight and contact’member
36 moves to the right-hand, due to the tilting of 35
the car to the right-hand, then the valve 50 is
opened and ?uid passes from the right-hand side
of the ?uid source 30, through the pipe Bl,
through the port 5i into the pipe 52 to the pipe
63, which serves to force the side bearing at the 40
right-hand side upwardly or resist its downward
movement. Simultaneously pressure is exerted
which communicates with the pump 30 by means
of the line 34. The discharge tank 33 is also ‘ through pipe 64 on the side bearing on the left
hand side to resist the rocking movement of the
connected to the suction line 29.
car to the right and with a view to returning the
The valve system of Figure 1 operates as fol
45
lows: Supported upon the center line of the car car tov its vertical position.
In the event the car rocks to the left-hand
at a point adjacent the center of gravity, is a
pivoted pendulum 35. The weight 36 is adapted ‘ side then the valve 58 will be opened and the
to act as a contact member for engaging the right
50 or left-hand contacts 31 and 38. The pendulum
pressure will make its exit from the left-hand
side of 30, through the port 59, having. traveled 50
is connected by the wire 39 to a vsource of current‘ through the pipe 65, and make its exit through
40. This source of current 4llrwhich may be an
electric battery or some other similar agency, is
connected on its other side through the wire 4i,
55 through the solenoid coil 43 and wire 42 to the
the pipe 66 to the pipe 61, where it will serve to
either resist or elevate the left-hand. side of, the
car and simultaneously the pressure will pass
into the pipe 68 on the right-hand side, with a 55
view to depressing that side of the car or resist
contact 31. It isalso connected through the‘ wire
4|, wire 44, solenoid coil 45 and line 46 to the ing the elevation thereof.
The source of ?uid pressure 30, shown in Fig
contact 38. Thus, upon making the contact be
tween 36 and 31 or 36 and 38 one of the valve ' ure 2, consists of a cylinder having springs 69
and 10 on opposite sides of the piston 1|, which
60 stems 25 will be actuated to depress the valves
23 and 20 to permit the pressure from. 28' to pass , is actuated by the piston rod 12, which in turn,
through the port I 9, chamber l4 into the, pipe l2 is actuated in either direction by the motor 13.
or l3, as the‘ case may be. If the right-hand This motor is provided with commutator brushes
valve is actuated ‘then the pressure is delivered‘ 14 and 15. Brush 14 is connected by the line 16
65 through the pipe l2, and if the left-hand valve is to the terminal 11. Brush 15 is connected by the
actuated then the pressure is delivered through line 18 to theterminal 19. The switch plate 80
the pipe I3; ‘when the pressure is so delivered it connects the terminal 11 to the terminal 8| in
the line 82. The terminal 83 in this line is con
serves to check the tilting of the car in the direc
tion of movement of the pendulum 35, and it nected by =the switch blade 84, the terminal 85
connected into the line 86, which in turn, is con 70
70 serves to restore that side of the car to its nor
mal position. To cooperate in this there is a nected to the battery 40.
Switch blade 81 connects terminal 19 to termi
downward pressure applied on the other side of
nal 88,"line 89, line 90 to solenoid coil 9i sur
' the car to restore the car ?oor to its normal hori
zontal position.
Referring to Figure _2, in the construction
roundingthe core 92, whichloperates- the switch
84. This'coil is connected by line 93 to motor 75
2,124,124
speed contact plate 84, and also by wire 85 to
the left-hand motor speed contact plate 86. Wire
81 is also connected to line 88 and to, the solenoid
coil 88, which operates the core 88 that in turn
operates the switches 80 and 81. The coil 88 is
connected by wire I00 to the right-hand motor
‘speed contact plate IN‘ and to the left-hand
plate I02. Line 81 is connected to the wire 54,
which in turn, is connected to the battery 40.
10
Returning to the lines 82 and 86, .it will be
15
20
25
30
noted that these two lines are connected together
by the line I03 having a’ resistance I04. The pur
pose of the switch 84 is to cut out this resistance.
The battery 40 is also connected to the line I05,
which is connected to the line I06 having ter
minals I01 and I08.
The other side of the battery is connected by
line 109 to the line IIO having terminals II I and
H2. Switch blade 56 is adapted to connect ter~
minal II2 with terminal II3. Terminal H3 is
connected by the line I I4 to one side of the motor
?eld II5,'the other side of which is connected
by the line II6 to ‘the terminal II1, which is con
nected by switch blade 55 to the. terminal I01.
Switch blade 56 also connects terminal II8, which
is connected by line_II4 to terminal II 9, which
is connected by line I20 to resistance I2I to the
terminal I22.
The'terminal I22 is connected by the switch
plate to the terminal I24 and thence to line I 25,
back to line II6. When the switch blade I23
engages terminal III it connects it to terminal
I26 and wire I25, thus cutting out resistance
3
?eld II5. It also results in energizing solenoid
88 with the same result as heretofore described.
If the swing is more severe the contact pendulum
weight 36 will engage with the contact 86 and
energize the solenoid 8|, with the result hereto
fore described.
'
When the solenoid 43 is energized, the motor
13 ‘is polarized for operation in one direction
while the polarity thereof is reversed for oper
ation in the opposite direction when solenoid 45 10
is energized.
When the weight contact member 36 engages
the contact 31, the bridging of the contacts H2
and H3 by switch plate 56 and the bridging of
contacts I 01\and II1 due to energization of sole 15
noid 43 completes the following circuit: 40, I08,
H0, H2, 56, H3, H4, H5, H6, H1, 55, I01, I05,
and back to 40.
When, however, the weight contact member 36
engages the contact 38, the bridging of contacts 20
III and I26 by switch plate I23 and the bridging
of contacts I08 and I28 by switch plate I21 com
pletes the following circuit: 40, I08, IIO, III,°I23,
I26, I25, H6, H5, I29, I28, I21, I08, I06, I05, and
back to 40; in this case, the pole of the motor 25
13 which was positive during engagement of the
member 36 with the contact 31 has become nega
tive; the pole which was formerly negative has
become “positive.
Referring to Figure 3, there is provided a tilt 30
ing pendulum arm pivoted at I30. The arm so
pivoted is designated I 3I. On one end of the
arm is carried a dash pot plunger I32, and on
I2I. When the switch blade I21 engages con
the other end a dash pot plunger I33. These
tact I08 it connects it to contact I28 and then plungers work in a' U-shaped dash pot I34, con
by wire I29 to wire II4. I2I_ is a ?eld discharge
resistance to prevent a .sudden and extreme rise taining the ?uid I35. The movement of the
of voltage when the ?eld coil H5 is suddenly fluid as the car tilts actuates the dash pot plung
ers I32 and I33, causes a movement of the arm
opened. Fig. 5 shows the substitution of a ca
I3I to bring into circuit the contacts 31 and I M ,
40 pacitor I2 Ia for the ?eld discharge resistance I2.
The operation of the-apparatus shown in Fig—' 84, 38, I02 and 96, as heretofore described.
It will be noted from Figure 4 of the draw
'ure 2 is as follows: When the car sways to bring ings that the piping system ‘can be connected
the pendulum to ‘one side of its vertical position,
either to thrust side bearings on opposite sides
as in the case when the car tilts to the right
of the same car, or on bearings on, di?ferent cars,
45 hand side, the weight‘contact member 36 en—
as in the case when it is desired to preserve the
gages the contact 81, which serves‘the purpose to ~?oor alignment of the two cars that are adja
open the valve 50, as heretofore described. The cent one ‘another, either for the purpose of main
energization of the circuit, including the contact taining the two cars against movement of their
81, results in bridging the contacts I I2 and H3 ?oors out of a horizontal plane, or for the pur
by the switch 56. This brings the ?eld I I5 in cir
pose of keeping the two cars so their platforms
; cuit because the switch 55 also bridges the con
will move together and be returned to the same
tacts I01 and H1. Therefore, ?eld H5 is always horizontal plane with respect to one another, ir
in circuit, whether," is in engagement with con
respective of the tilt of both bodies with respect
tactIOI or 84.
when 88 engages I_8I- it energizes the arma
ture circuit through the solenoid 88, causing
switch plate 88 to bridge terminals 11 and 8|,
and switch plate 81 to bridge terminals 18 and
88. During this period the resistance I04 is in
60
circuit. The motor operating the pump 80 be
gins to move to force the ?uid through the piping
system to correct the tilt of the body. If the tilt
to a horizontal position. -
40
45
.
50
I
As shown in Figure 4, the adjacent cars No. 55
1 and No. 2 which are articulated upon and sup- _
ported by a common truck (not shown) are each
equipped with connections at each side, which
connections comprise cylinders 3 mounted on
the common truck with heads or pistons 4 and 60
5 provided with connecting rods or piston rods
‘ 6 which are connected to side bearings at oppo
is very severe the contact pendulum 36 will move
sides of the respective cars, asin Figures 1
over the contact 84, energizing the solenoid SI site
and 2.
'
and closing switch 84, across the terminals 83
Each of the cars No. 1 and No. 2 is provided
and 85, cutting the resistance I04 out of cir
with a pump 30 connected by pipe 6I through
cuit and bringing about a higher speed of the valve 41 to pipe 62 and connected by pipe 65
motor armature 13, thereby delivering a higher through valve 48 to pipe 66. The pumps 30
hydraulic pressure to meet the greater roll.
and their controls and connections are identical
70
I1’ the pendulum swings to the ‘left-hand it with
the pump 30 and its controls and connec 70
engages the contact 38, energizing solenoid 45,
described above and illustrated in Figure 2;
lifting valve 58 and closing the switch blade I23 tions
the valves 41 and 48 and their controls and con
across terminals I26 and III, and also bring the
nections are likewise identical with the valves
switch blade I21 into engagement with‘ termi
75 nals I08 and I28, thereby energizing the motor 41 and 48 and their controls and connections, as
described above and illustrated in Figure 2.
75
2,124,124.
The pipe 62 of car No. 1 is connected by pipe
64 to the upper end of the lefthand cylinder 3
of car No. 1 and by pipe 63 towthe lower end
of the righthand cylinder 8 of car No, 2; applica
tion of pressure through the pipe 62 of car No. 1,
zontal axis, oppositely acting hydraulic means as
sociated with the respective side bearing means
for pressing the body downwardly or upwardly
adjacent thereto, and means responsive to the
tilt of said body for controlling said hydraulic
therefore, causes simultaneous exertion of force
means whereby hydraulic pressure can be ap
downwardly on the left side of car No; 1 and
upwardly on the right side of car No. 2. The
plied simultaneously for resisting the downward
pipe 66 of car No. 1 is connected by pipe 6'! to
10 the ‘lower side of the lefthand cylinder 3 of car
No. 1 and by pipe 68 to the upper side of the
righthand cylinder of car No. 2;‘ application of
pressure through pipe 66 of car No. 1 causes si
multaneous exertion of upward force at the left
15 side of car No. 1 and downward force at the right
side of car No. 2.
The pipe 62 of car No. 2 is connected by the
pipe 64 thereof to the upper side of the lefthand
cylinder 3 of car No. 2 and by pipe 63 to the
20 lower side of the righthand cylinder 3~ of car
No. 1;.application of pressure through the pipe
62 of car No. 2 causes simultaneous exertion of
downward force at the left side of car No. 2 and
upward force at the right side of car No. 1. The
pipe 66 of car No. 2 is connected by pipe 81 to
the lower side of the lefthand cylinder 3 of car
No. 2 and by pipe 68 to the upper side of the
righthand cylinder 3 of car No. 1; application of
pressure through pipe 66 of car No. 2 causes s1
30 multaneous exertion of pressure upwardly at the
left side of car No. 2 and downwardly at the right
side of car No. 1.
>
movement of the body on one side and the upward
movement of the body on the other side.
2. In combination, a rail truck, a car body 10
having spaced side bearing means and pivotally
secured to said truck at a point therebetween for
tilting movement about a fixed horizontal axis,
hydraulic means adjacent said side bearing
means and associated therewith for pressing the 15
body downwardly or upwardly, whereby hydraulic
pressure can be applied simultaneously for re
sisting the downward movement of the body on
one side and the upward movement of the body
on the other side, and means controlled by the 20
tilting of the body for determining whether the
hydraulic thrust on one side or'the other will
be up or down, wher by there is a coordinated
thrust upwardly upo the low side of the body
and downwardly on the\high side of the body.
3. In combination, a rail truck, a car body
having spaced side bearing means and pivotally
secured to said truck at a point therebetween for
tilting movement about a ?xed horizontal axis,
hydraulic means adjacent said side bearing means
andvassociated therewith for pressing the body
downwardly or upwardly, whereby hydraulic pres
'
It will thus be seen that, through pump 38
of car No. 1, pressure is exerted simultaneously
in opposite directions at the left side of car No. 1
and the right side of car No. 2. Likewise, force is
exerted b ythe pump 30 of car No. 2 simultane
ously at the left side of car No. 2 and the right
sure can be applied simultaneously for resisting
the downward movement of the body on one side
and the upward movement of the body on the 35
other side, means controlled by the tilting of the
body for determining whether the hydraulic
thrust on one side or the other will be up or
tilting of one car in one direction will cause an
down, whereby there'is a coordinated thrust up
wardly upon the low side of the body and down .40
wardly on the high side of the body, and means
for supplying pressure to said hydraulic means.
4. In combination, a rail truck, a car body
opposing force to be applied to that car at one
having spaced side bearing means and pivotally
side of car No. 1 and in opposite directions.
Due to the duplication of the pendulum con
40
trol mechanism of Figure 2 for the pumps 30 and
valves 41 and 48 for each of cars No. 1 and No. 2,
side and also to the adjacent car at the oppo- _ secured at a point therebetween to said truck
site side. If both cars are tilted, the opposing
for tilting movement about a ?xed horizontal
force’ is applied at opposite sides of each car,
because both pumps 30 will be made operative to
means and associated therewith for pressing the
produce such force. When, upon tilting of both
body downwardly or upwardly, whereby hy
cars, pressure is applied through pipe 62 of car
No. 1 to produce downward-force at the left of
car No. 1 and upward force at the right of car
No. 2, pressure is also applied through pipe 62
to produce downward force at the left of car
No. 2 and upward force at the right, of car No. 1.
Likewise, upon tilting of both cars, when pres
sure is applied through pipe 68 of car 1, pres
sure is applied also through pipe 66 of car No. 2
and upward pressure is applied at the left side
draulic pressure can be applied simultaneously for 50
resisting the downward movement of the body
on one side and upward movement of the body
on the other side, tilt responsive means con
axis, hydraulic means adjacent said side bearing
trolled by the tilting of the body for determining
whether the hydraulic thrust on one side or the m u
other will be up or down, whereby there is a co
ordinated thrust upwardly upon the low side of
the body and downwardly on the high side of the
body, and means for supplying pressure to said
of both cars, and downward pressure is applied at . hydraulic means, said tilt responsive means com 60
prising a pendulum pivoted on said body and
the right side of both cars.‘ When pressure is ap
‘ plied through a pipe 62, suction is applied through valve means controlled thereby for directing the
the corresponding pipe 66 and vice versa, as de- - hydraulic pressure in order to correct the tilt
scribed above.
' of the body.
_
It will be understoodithat it is desired to com
prehend within'this invention such modi?cations
as come within the scope of the claims and the
invention.
-
_
Having thus fully described the invention, what
70 is claimed as new and desired to be ‘secured by
Letters Patent, is:
1. In combination, a rail truck, a car body
having ‘laterally spaced side bearing means, and
pivotally secured to said truck at a point there
75 between for tilting movement about a ?xed hori
5. In combination, a rail truck, a car body 65
having spaced side bearing means and pivotally
secured to said truck at a point therebetween for
tilting movement about a ?xed axis, hydraulic
means supported on said truck adjacent said
side bearing means associated with said side bear 70
ing means for pressing the body downwardly or
upwardly, whereby hydraulic pressure can be
applied simultaneously for resisting the down
ward movement of the body on one side and the
upward movement of the body on the other side,
2,124,124
tilt responsive means controlled by the tilting
of the body for determining whether the hy
draulic thrust on one side or the other will be up
orv down, whereby there is a coordinated thrust
upwardly upon the low side of the body and down
wardly on the high side of the body, means for
supplying pressure to said hydraulic means, said
tilt
responsive
means
comprising _ a
contact
pendulum pivoted on said body and valve means
10 controlled thereby for directing the hydraulic
pressure in order to correct the tilt of the body,
and electrically actuated means for actuating
said valve means adapted to be brought in circuit
by the movement of the pendulum.
15
6. In combination, a rail truck, a car body
having spaced side bearing means and pivotally
secured to said truck at a point therebetween for
movement about a ?xed axis, hydraulic means
supported by said truck and associated with said
20 side bearing means for pressing the body down
wardly or upwardly adjacent thereto, whereby hy
draulic pressure can be applied simultaneously for
resisting the downward movement of the body on
one side and upward movement of the body on the
- other side, tilt responsive means controlled by
the tilting of the body for determining whether
5 .
a cylinder having therein a piston rigidly con
nected to a piston rod, each of said cylinders hav
ing hydraulic cross connection from the top there
of to the bottom of the other cylinder, and means
to simultaneously apply pressure to one of said
cross connections and suction to the other of said
cross connections to simultaneously extend one
hydraulic connection while contracting the other
hydraulic connection.'
10. In a control means for correcting the tilt 10
of a car, a ?uid tube, ?oat members ?oating in
the arms of said tube, 'a pivotal contact shaft
connected to said ?oat members and pivoted
therebetween, and electrical contacts selectively
engaged by said contact shaft according to the 15
degree of tilt re?ected in said ?uid tube.
11. In combination, a rail truck, a car body,
means on said truck to pivotally support said car
body to permit it to rock, side thrust means,
hydraulic means on said truck operating down 20
wardly and upwardly upon said side thrust means
to resist and correct the tilt of the body, a hy
draulic pump connected thereto, hydraulic valves
for selecting the directi n of the ?uid so pumped,
and electrical means to controlling said pump 25
and selecting the direction of movement of the v
the hydraulic thrust on'one side or the other
will be up or down, whereby there is a coordinated
hydraulic pressure.
thrust upwardly upon the low side of the body
and downwardly on the high side of the body,
means for supplying pressure to said hydraulic
ally support said car body to permit it to rock,
side thrust means, hydraulic means operating 30
downwardly and upwardly upon said side thrust
means to resist and correct the tilt of the body, a
means, said tilt responsive means comprising a
contact pendulum pivoted on said body and valve
means controlled thereby for directing -the hy
draulic pressure in order to correct the tilt of the
body, electrically actuated means for actuating
said valve means adapted to be brought in circuit
by the movement of the pendulum, and a supple
mentary power source for energizing the electrical
means so brought into circuit.
'
7. In combination, a rail truck, a tilting car
body pivotally connected to said truck, hydrauli
cally operated thrust means for thrusting up
wardly and downwardly on said body on 0p
posite sides of said pivotal connection, means to
supply ?uid pressure to said hydraulic means, hy
draulic valve ‘means for determining the direc
tion of application of the pressure, a pendulum
pivoted
on the body, an electrical means con
trolled by and adapted to be brought into cir—
cuit with said pendulum for operating the elec
trical means to operate the valve means deter
mining the course of, the hydraulic pressure.
12. In combination, a car body, means to pivot
hydraulic pump connected thereto, hydraulic
valves for selecting the direction of the ?uid so
pumped, electrical means for controlling said 35
pump and selecting the direction of movement of
the hydraulic pressure, and electrical means for
controlling the rate of said pump.
13. In an articulated car construction, a truck,
adjacent car bodies having common articulation 40
with said truck, side thrust bearings for said
respective cars associated with said truck, hy
draulic means for operating on said car bodies
in association with the side bearings for simul
taneously moving one portion of one body down
wardly and another portion of another body up
wardly with respect to said truck.
45
14. In an articulated car- construction, a com
mon truck, a pair of car bodies having their ad
iacent ends articulated for free lateral movement
on said truck, hydraulic thrust means disposed 50
on said truck and connected to each sideof each
of said bodies and adapted to thrust upwardly on
8. In combination, a tilting car body, hydrauli- I one side and downwardly on the other side of each
of said bodies, means to supply ?uid to said hy
wardly and downwardly on said body on opposite ' draulic thrust means, and means to synchronize 65
sides thereof, means to supply ?uid pressure to said thrust means connected to the respective
said hydraulic means to cause simultaneous oper
car bodies so as to maintain the car bodies in sub
cally operated thrust means for thrusting up->
ation of the hydraulic means in opposite direc
60 tions, hydraulic valve means for determining the
direction of application of the pressure, a pen
dulum pivoted on the body, an electrical means
stantially the same plane.
15. In an ‘articulated car construction, a truck, 60
a pair of car bodies articulated for free movement
on said truck, hydraulic means connected to
controlled by and adapted to be brought into
circuit with said pendulum for operating the elec
said truck and to each side of each of said bodies
and adapted to thrust upwardly on one side and
trical means to operate ,Xthe, valve means deter
mining the course of the hydraulic pressure, and
supplementary electrical means controlled by ‘said
downwardly on the other side of each of said 65
bodies, means to supply ?uid to said hydraulic
thrust means, and means to synchronize said
thrust Y means connected to the respective car
pendulum for controlling the total pressure on
the hydraulic circuit according to the degree of
70 tilt of the body.
9. In combination, a truck, a body mounted on
arranged that the hydraulic thrust means will
said truck for tiltable movement about a hori
zontal axis, and extensible hydraulic connections
between said body and said truck at opposite sides
75 of said axis, each of said connections comprising
thrust downwardly on an upwardly moving side
of one body and upwardly on the opposite side of
the other body.
16. In a system of maintaining the'bodies of‘ a 75
bodies so as to maintain the car bodies in sub~
stantially the same plane, said means being so 70
6
2,124,124
plurality of connected cars having trucks in a
sure to the top of the cylinder of the hydraulic
predetermined relationship, hydraulic thrust
thrust means on one side of one body is connect
means oppositely disposed with respect to the
center line of each of said cars near the adjacent
ends thereof, said hydraulic means being inter
posed between the trucks and the car, bodies, ‘
thrust means on the opposite side of the other
body, and a common means responsive to the tilt
means to pivotally support'the car bodies on their
draulic pressure to correct said tilt.
trucks, and means interconnecting the hydraulic
thrust means of adjacent cars whereby they oper
10 ate in synchronism to maintain their car bodies
in a predetermined relationship.
‘
17. In a system of maintaining the bodies of
a plurality of connected cars having common
trucks in a predetermined relationship, hydraulic
15 thrust means oppositely disposed on either side
of the center line of each of said cars near the
adjacent ends thereof, said hydraulic thrust
means being interposed between the common
truck and the bodies of adjacent cars, means to
20 pivotally support the adjacent ends of the car
ed to the bottom of the cylinder of the hydraulic
of at least one of said bodies for applying hy
19. In‘ a system of maintaining the bodies of
adjacent cars having a common truck in a pre
determined relationship, hydraulic thrust means 10
disposed on opposite sides of the center line of
each of said cars near the adjacent ends thereof,
said hydraulic thrust means comprising cylinders
each having therein an oppositely acting‘ piston
with a rigid connecting rod and being interposed
between the common truck and the car bodies,
means to pivotally support the car‘bodies on the
truck, means interconnecting the cylinders of
said hydraulic thrust means whereby they op
erate in synchronism to maintain said car bodies 20
bodies on the common truck, and means inter
in a predetermined relationship; said means be
connecting said hydraulic thrust means of ad- ‘ ing so arranged that a pipe conveying hydraulic
Jacent car bodies whereby they operate in syn
pressure to the top of the cylinder of the hy‘
chronism to maintain said car bodies in a pre
25 determined relationship, said means being so ar
draulic thrust means on one side of one body is
ranged that the pipe conveying hydraulic pres
sure to the top of the hydraulic thrust means on
one side of one body is connected to the bottom
of the hydraulic thrust means on the opposite
30 side of the other body.
,
‘
18. In a system of maintaining the bodies of
adjacent cars having a common truck in'a pre
determined relationship, hydraulic thrust means
- disposed at opposite sides of the center line of
35 each of ‘said cars near the adjacent ends thereof,
said hydraulic thrust means comprising cylinders
each having therein an oppositely acting piston
with a rigid connecting rod and being interposed
between the common truck and the car bodies,
40 means to pivotally support the car bodies on the
truck, means interconnecting said hydraulic
,thrust means whereby they operate in synchro
nism to maintain said adjacent car bodies in a
predetermined relationship, said means being so
45 arranged that a pipe conveying hydraulic pres
connected to the bottom of the cylinder of the. 25
hydraulic thrust means on the opposite side of
‘the other body to cause simultaneous application
of force in opposite directions by said last-named
hydraulic thrust means, a common means re-,
sponsive to the tilt of at least one of said bodies 30'
for applying hydraulic pressure to correct said
tilt, and means also responsive to the tilt of at
least one of said bodies for controlling the de
gree of pressure of said hydraulic means in order
35
to adjust it to the extent of the tilt.
20. In a method of maintaining two railway
car bodies articulated on a common truck in sub
stantial alignment against tilting, applying hy
draulic pressure on one body downwardly from
said truck as the body moves upwardlyand up
wardly from said truck on the opposite side of
the other body as it moves downwardly.
THEODORE H. SCHOEPF.
DAVID M. RITCHIE.
45
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