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Патент USA US2116809

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May 10, 1938-
E. A. ‘NALCHER ET AL
.
RADIUS
2,116,809
BAR
Filed July 15, 1955
4 ShGGtS-ShGGt l
May 10, 1938-
E. A. WALCHER ET AL
2,116,809 '
RADIUS BAR
4_ Sheets-Sheet 2
Filled July 15, 1955
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May 10, 1938.
E. A. WALCHER ET AL
2,1 16,809
RADIUS BAR
Filed July 15, 1955
4 Sheets-Sheet 4
Patented May 10, I938
‘ v UNITED
2,116,809
STATES
PATENT OFFICE
2,116,809 ’ ‘
‘RADIUS BAR
Edwin A. WalcherfC‘alumet City, and ‘Walter H.
Baselt, Chicago, 111.,‘ assignor's‘ to American
Steel Foundries, Chicago, 111., a corporation of
New Jersey
Application .iuly'is, 1935',’ “Serial No. 31,460
5- ‘Claims. " ‘ (o1. _- 188-219‘)
This invention relates to a new and‘ improved
radius bar or horizontal equalizer for railway car
brakes and‘ more‘ particularly to such‘ a bar formed
as an integral truss structure.
.
,
,
The radius bar or equalizer for railwayqcar
brakes is usually‘mounted on the truck and. serves
to. connect the car body pullv rod with the brake
levers carried by the truck. Due to relative
movement between the car body and truck, the
connection between the body pull rod and‘ radius
bar is. a rolling or sliding one, the contact usually
being upon: a. circular arc. Also, there is a‘twist
ing action on the radius bar due‘ to.‘ the relative
change of position of the truck andcar body be
cause of spring de?ection, swiveling, and the like
movements.
'
Radius bars have heretofore been‘ constructed‘
as built up members. comprising a plurality of
parts riveted together or as a unitary solid bar.
20 The built up‘ radius bars. have in: general con
sisted of two main members held together by
additional members, all of which parts‘must be
carefully made and accurately assembled. Such a
construction‘ is expensive to- make‘ and, due to:
25 the fabricated. construction, requires a greater
weight of. metalfor a given strength than aunttary construction. On the other hand; a truss‘
construction: is very desirable‘ as making “the
most eiiicient use of a given- weight of metal; in
this respect being superior to a solid metals bar.
It is therefore one of the objectsof this inven
tion to incorporate in a radius bar the advan
tages of the truss type of construction while
avoiding the disadvantages which have ‘hereto
fore been present in radius bars of such form. ‘
It is a“. further object to provide a bar of this
character which is formed integrally as a unitary
member with openings formed therein. ‘
It is also an object to provide a unitary trussv
construction comprising. integral. tension. and
compression members and struts.
45
‘
It is an additional object to provide a‘truss
construction in which. the members‘ andstruts
form a window opening for the application of
brake actuating. mechanism.
‘
i
It is another object to provide a construction
which is simple in design and in installationandi
operation, and adapted for commercial produc—
tion. and
50
use.
‘
‘
>
With‘ these and various other objects in view.
the invention may consist. of certain‘ noveli fea-.
55.
tures of. constructioniand operation a'si‘vwilf‘be
morefully described andzparticularly pointed‘ out“
in. ‘the speci?cation; drawings: and claims; ap_
pended hereto.
‘
..
.
In the drawings, which illustrate embodiments
of the~device,_and wherein like reference char
actersare used- ‘to designate like parts
Figure ,1 is a plan view of the radius rod;
Figure 2 is; a side elevation;
Figure 3 is aview as seen‘ from the right end 5
of Figure 1.;
‘
‘Figure 4 is a» fragmentary top plan view of one
end of ‘a truck construction showing the applica
tion thereto of- the radius bar embodying the w
invention; .
. Figure ‘5' is a fragmentary end elevation of the
truck construction and radius bar application
illustrated; in Figure 4;
Figure 6‘ is a-n-:enlarged fragmentary top plan
view of the radius bar and associated operating
I.
n'iechanismv embodying the invention;
,Figure T is» a fragmentary sectional‘ elevation
taken substantially’ in the plane indicated by the
line- ‘IL-‘lief Figure 6;
l
l
t ‘Figure 8‘ is- an‘ enlarged fragmentary top plan 20
view corresponding to‘Figure 6 showing a dif
terent fornr of operating means;
wFig-ure 9‘ is a fragmentary sectional side eleva
tionrthrough a portion of a truck construction,
brake operating mechanism and the associated
car body‘ showing the normal relative positions
between~ theoperating‘rod and the‘radius ‘bar;
Figure 10 lis-a fragmentary sectional side‘eleva
tion corresponding to Figure 9‘showing the posi
tion'ofthe‘ brake'mechanism and radius bar when 30
the“ car body is in a lowered‘ position as a result
of the‘springs being compressed under load;
Figure 1 1' is a fragmentary sectional side eleva
tion corresponding to-Figure 9 showing the posi
tion‘of the brake‘ mechanism and‘radius bar when b)
the‘ca‘r body‘ is in anl abnormally high position
such. as it’ might assume when the springs were
expanded-to ‘a maximum, as may‘ sometimes occur
underservice conditions.
40
This application is a» continuation-in-part of
application Serial; No. 668,316. ?led‘ April 28,
1933.
1 Referring ?rst‘ of all more particularly to the
unitary radius bar I0, such as illustrated in 45
FiguresIhZ and 3, said bar includes a tension
member- ,I l- and compression member I2 joined
into the‘ integral reduced end portions l3 which
carry the‘trunnions I4. The trunnions I 4 carry
theca'stellat‘ed'nuts l5 to retain the brake lever 50
and radius bar connections in place. The radius
bar is also provided with hinge brackets I6 which
are riveted to‘ the bar, and serve to‘ connect the
bar‘ to supporting links.
The truss‘ construction of the radius bar is 55
2,116,809
2
to the bracket I6 provided on the radius bars in
completed by the integral struts 20 which con
nect intermediate portions of the tension and
compression members I I and I2 respectively, and
substantial alignment with the struts 20 thereof.
In order to more adequately illustrate the rel
ative positions of the parts of the operating
the struts are so spaced as to form a window
means and the radius bar, a reference may be
opening for the application of the brake actuat
ing mechanism.
had to Figures 6 and '7. The operating rod or
body pull rod 64 provided with the jaws 66 is
The radius bar is provided with wear plates I1
and I8, and wear plate I‘! has a vertically ex
tending portion I9 which covers the inner face of
disposed so that the jaws embrace the tension
and compression members I I‘ and I2 of the radius
10 ‘the tension member II and serves as a contact
surface or track for the roller carried by the body
pull rod jaw, while each of the wear plates serves
as a wear member for the operating means such
as the jaws of the rod 64 formed by the straps,
15 all as later described.
.
In forming the radius bar, it is preferably
cut out of a single piece of steel with the trun
bar. The roller 68 is pivotally connected as at 10
18' to the upper and lower jaws 86 and 82 so that
the roller is disposed between the tension and
compression members and has a rolling contact
with the vertically extending leg IQ of the mem
ber I‘I, said member being connected as by the
rivets 84 to the tension member II.
The upper jaw 80 is provided with the rubbing
nions formed on the ends in an upsetting ma
chine. Due to the one piece construction it is
less apt to give trouble in service than the built
up design.
Referring now more particularly to Figures 4
and 5, the truck 22 includes the side frame 24
and the end connecting members 26 secured to
said side frame. Suitable brakes may be applied
to each side of each of the wheels 29. In the
construction shown, the brake rigging is similar
to that illustrated and particularly described in
Baselt Patent No. 2,002,930, granted May 28, 1930.
30 On each side of the wheels suitable brake levers
are provided, having brake shoes, and connected
by the spaced pull rods 21, the end brake lever
28 being a dead lever and pivotally connected to
the bracket 30 provided on the end rail 26, the
brake lever being provided with the pivotally
mounted head 32 intermediate the ends thereof.
The inner brake lever 34 is a live brake lever,
being supported by means of the brake hangers
36 pivoted as at 38 to the side frame. The live
brake lever is also provided with a suitable brake
shoe and the upper end of said lever is pivotally
connected through the clevis 40 to the live hori
zontal lever 42, the outer end of said live lever
being pivotally connected as at 44 to the pull
rod 46 connected to a similar horizontal lever
associated with the adjacent wheel.
,
The pull rod 48 is pivotally connected as at 50
to the horizontal lever 42 intermediate the ends
thereof, the other end of said pull rod being
connected as at 52 to the trunnion I4 of the
radius bar I0, and being fastened thereto by
means. of the nut I5. The release spring 54 is
mounted on the bar 56 slidably mounted in the
bracket 58 provided on the side frame, the other
end of said bar being connected through the
bracket 60 to the pull rod 48, the spring being
con?ned between the bracket 58 and the retain
er 62 provided on said bar. Hand or other oper
ating means may be provided for operating the
60 brake rigging through the radius bar. In this
case the operating means directly connected to
said bar may take the form of the rod 64, the end
thereof being formed with the jaw 66 embracing
the radius bar, said jaw between the tension and
compression members being provided with the
roller 68 adapted to have rolling contact with the
arcuate wear member I9 whereby the brakes may
be equalized regardless of the angularity between
the operating means and the truck or radius bar.
70
The support for the radius bar on the truck
is provided by means of the supporting levers ‘I0
pivotally mounted as at ‘I2 to suitable brackets 14
provided on‘ the end member26. The upper ends
of said supports are pivotally mounted as at ‘I6
75
strip and reenforcing member 86 adapted to have
sliding contact with the top of the tension mem
ber II when the parts are in normal position, 20
that is, when the car body is light or substantially
without load. The lower jaw 82 is provided with
the reenforcing or rubber strip 88 secured thereto
as by means of the rivets 96 and adapted to have
sliding contact with the member I8 secured on
the under side of the compression member I2.
The end of the operating rod 64, in the con
struction shown in Figures 6 and '7, is pivotally
connected as at 92 to the dead operating lever 94
pivotally connected as at 96 to the car body,
said lever being adapted to be operated by the
rod 98 operated either by a cylinder or hand
operating means.
In the construction illustrated in Figure 8, the
operating rod I64 is similar to the operating rod
64, the end removed from the radius bar being
shown as provided with the ?exible connection
I00 for operation by a brake staff or other oper
ating means.
In order to show certain of the functions of the
reenforcing or wear plates Ill and I8, a reference
may be had to Figures 9, 10 and 11, as well as
Figures '7 and 8. The truck frame I02 is shown
as provided with the depending pedestals I04
adapted to accommodate journal means (not
shown) having cooperative engagement with the
axles I06 of the wheel and axle assemblies I08.
Brakes such as shown and described in Figures
4 and 5 may be used. The truck frame is pro
vided with the end member H0 to which the ,
brake ‘I4 is secured, as has already been described
with respect to Figures. 4 and 5.
The radius bar I I and the associated operating
rod 64 are shown, the operating lever 94 being
pivoted as at 92 to the jaw II2 of the rod 64. A
support H4 is provided on the car body II'B for
slidably supporting the dead lever 94 and its as
sociated mechanism. It will thus be seen that
when there is no relative change of position be
tween the car body H6 and the truck frame I02,
the wear plate 86 rests upon the tension mem
ber II.
'
In operation, it has been found advisable and
necessary to provide a wear plate II on the bot
tom of tension member II, said wear plate being
provided with the upwardly extending leg I9
adapted to form a track for the roller 68. The
wear plate I8 is provided on the under side of
the compression member I2 and adapted to
have: sliding contact with the wear member 88 70
provided on the lower jaw 82.
The wear member is provided both on the com
pression member and on the jaw due to the ex
treme conditions of operation when tipping of the
radius bar occurs.
When the car body moves
2,116,809
downwardly under load as viewed in Figure 10,
the wear plates I8 and 88 come into contact and
the wear member I‘! is contacted by the lower
jaw 82 so that when angling occurs the wear is
taken through the wear members, and the lower
jaw of the operating rod 64. The same operation
between the wear plates l8 and 88, and the lower
jaw of the wear member I‘! occurs when there is
upward movement at the right side of the car as
3
her having a wear member on the lower side
thereof and extending into said window to form
a track therein, a wear plate on the lower side
of said compression member, and a pull rod for
moving said radius bar to operate said rigging,
said rod having a bifurcated jaw receiving said
radius bar, said jaw including upper and lower
members connected by a member disposed in said
window and adapted to engage and slide on said
viewed in Figure 11. It is understood that under track.
some conditions of operation the jaw of the rod
10
3. In a brake arrangement, the combination of
64 may contact the radius bar in, other than the
brake rigging, a radius bar connected to said rig
described positions which are, however, illustra
ging, said bar being substantially of truss contions of the most usual conditions which deter
1-) mine the position of the wearing and reenforcing
struction including tension and compression
members merging adjacent the ends thereof and 15
members. Thus, not only do the wear plates pre
having a window therebetween, said tension
vent wear of the radius bar, but they also per
form the function of stiffening the radius bar, member having a wear member on one side there
and the member l9 also forms a track for the of and extending into said window to form a
track therein, a wear plate on the lower side of
operating roller. It is comparatively easy to re
place the operating rod 64 or the wear plates, and said compression member, and a pull rod for 20
1f
this may be done comparatively inexpensively,
and a stronger and lighter bar can also be pro
moving said radius bar to operate said rigging,
said rod having a bifurcated jaw receiving said
radius bar, said jaw including upper and lower
members connected by a member disposed in said
window and adapted to engage and slide on said 25
track.
vided.
Thus, with the construction shown, the wear
members perform a plurality of functions which
obviate the necessity of replacing the radius bar.
4. In a brake arrangement, the combination
It is to be understood that we do not wish to
of brake rigging, a radius bar connected to said
be limited by the exact embodiments of the de
vice shown, which are merely by way of illus~ rigging, said bar being substantially of truss
tration and not limitation, as various and other construction including tension and compression 30
forms of the device will of course be apparent members merging adjacent the ends thereof and
to those skilled in the art without departing having a window therebetween, said tension
from the spirit of the invention or the scope member having a wear member on one side
thereof and extending into said window to form
of the claims.
What is claimed is—
i
1. In a brake arrangement, the combination of
brake rigging, a radius bar connected to said
rigging, said bar being substantially of truss con
struction including tension and compression
members merging adjacent the ends thereof and
having a window therebetween, said tension
member having a wear member on the lower side
thereof and extending into said window to form
a track therein, a wear plate on the lower side
of said compression member, and a pull rod for
moving said radius bar to operate said rigging,
said rod having a bifurcated jaw receiving said
radius bar, said jaw including upper and lower
members connected by a member disposed in said
a track therein, a wear plate on one side of said 35
compression member, and a pull rod for moving
said radius bar to operate said rigging, said rod
having a bifurcated jaw receiving said radius bar,
said jaw including upper and lower members
connected by a member disposed in said window 40
and adapted to engage and slide on said track.
5. In a brake arrangement, the combination
of brake rigging, a radius bar connected to said
rigging, said bar being substantially of truss
construction including tension and compression 45
members merging adjacent the ends thereof and
having a window therebetween, said tension
member having a wear member on one side there
of and extending into said window to form a
window and adapted to engage and slide on said
track therein, a wear plate on the same side of 60
track, a wear plate on said upper member over
said compression member, and a pull rod for
said tension member, and a wear plate on said
lower member below said compression member.
2. In a brake arrangement, the combination
of brake rigging, a radius bar connected to said
rigging, said bar being substantially of truss con
struction including tension and compression
members merging adjacent the ends thereof and
having a window therebetween, said tension mem
moving said radius bar to operate said rigging,
said rod having a bifurcated jaw receiving said
radius bar, said jaw including upper and lower 55
members connected by a member disposed in
said window and adapted to engage and slide on
said track.
EDWIN A. WALCHER.
WALTER H. BASELT.
60
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