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Патент USA US2406048

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Aug, 2%, W46.
c. E. TACK
v RAILWAY BRAKE
Filed Oct. 4, 1943'.
s Sheets-Sheet 1
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Aug. 20, W46.
j‘ Filed 001:. 4, 1943»
3 Sheets-Sheet 2 ‘
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AQVVENTOR. v
Aug. 20, 1946.
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¢_ E, TACK"
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RAILWAY
BRAKE
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I 2,406,048
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- Filed Oct. 4,1943
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155/ N‘TOR.
Patented Aug. 20, 1946
2,406,048
UNITED STATES PATENT OFFICE
2,406,048
RAILWAY BRAKE.
Carl E. Tack, Chicago, Ill., assignor to American
Steel Foundries, Chicago, 111., a corporation of
New Jersey
Application October 4, 1943, Serial No. 504,821
29 Claims.
1
My invention relates to brakes and more par
ticularly to brake rigging for a railway car truck.
An object of my invention is to design a “Du
(01. 188-53)
2
truck and is supported from the journal boxes
at that side of the truck, the equalizer being pro
vided with resilient means affording support for
_ plex” or “Duo-Simplex” truck brake comprising
the truck frame.
braking means for the truck wheels as well as
At the juncture of each transom 6 with each
braking means for association with axle-driven
side rail 2 is formed a gusset l2 and, as clearly
discs.
>
seen in Figure 3, each gusset is provided with
A speci?c object of my invention is to design a
three spaced lugs Hi, It and I8 de?ning the in
brake of the above-described type in which a
board and outboard brackets 29 and 22, said
brake beam is supported from the truck frame 10 brackets serving a purpose hereinafter described.
adjacent each axle, said beam being formed with
Extending substantially parallel to each axle
cylinder housings supporting friction means for
is a brake beam 24, and formed at each end of
engagement with brake discs driven by the axles.
said beam is a cylinder housing 25 a?ording piv
The rigging is so arranged that a single shoe
otal fulcrums at 28, 28 for the brake levers 30,
brake mechanism is disposed at each side of the
30, said levers being pivotally connected at 32, 32
truck for cooperation with the wheels at that side, »
with inboard and outboard brake heads 34, 34 car
said mechanism comprising dead truck levers ful
rying friction shoes 36, 36 for engagement with
crumed by the same means a?ording pivotal sup
inboard and outboard surfaces of the brake disc
port for the ends of the associated brake beams.
38 mounted to rotate with the adjacent Wheel and
A di?erent object of my invention is to design 20 axle assembly II). It will be understood that each
a novel brake rigging for a railway car truck in
which a brake beam such as above described ex
cylinder housing 26 receives therewithin a cylin
der and associated pistons (not shown) for the
tends generally parallel to each axle, said beam
actuation of the brake levers 30, 3G in the con
being afforded a three-point support from the
ventional manner, and the top of each housing
truck frame, said support including means af 25 26 is provided with a cover d0 having a nozzle or
fording relative lateral movement between the
connection 42 through which pressure fluid is fur
brake beam and the truck frame as the wheel and
axle assemblies move laterally of the truck dur
nished to the cylinder within the housing.
Figure 4 is a vertical section taken on the line
4-4 of Figure 2.
In each of said ?gures certain details may be
omitted where more clearly seen in other views.
Describing my invention in detail, the truck
frame comprises spaced side rails 2, 2, spaced end
nateily telescoped resilient and metallic bushings,
the bolt and nut assembly 45 being received with
Intermediate the ends thereof each brake beam
ing a braking operation.
24 is provided with spaced arms 44, 44, said arms
In the drawings, Figure 1 is a fragmentary top 30 being pivotally connected by means of a pin or
plan view of a railway car truck embodying my
bolt and nut assembly 45 to a torque bracket 48
invention, and Figure 2 is a sectional View along
secured as at 5B, 59 to the adjacent transom 6,
the longitudinal vertical plane substantially bi
the connection between the arms 44, (i4 and the
secting the truck as indicated by the line 2—2 of
bracket 48 being resilient by means of a com
Figure 1.
35 posite bushing {52 described in detail in my co
Figure 3 is a fragmentary sectional view taken
pending application, Serial No. 421,418, ?led De
in the transverse vertical planes indicated by the
cember 3, 1941, in the United States Patent Oilice.
line 3—3 of Figure 1.
The bushing 52 comprises a plurality of alter
rails 4, l5, and. spaced transoms 6, 6 joining the
side rails 2, 2 intermediate the end rails, said
transoms being formed and arranged for the sup
port of an associated truck bolster member in
the usual manner. At each end thereof each side
rail 2 is formed with spaced pedestal legs or jaws
8, 3 (Figure 2) adapted for reception therebe
tween of a journal box (not shown) associated
with the adjacent wheel and axle assembly 10.
It will be understood that a conventional equal
izer (not shown) is disposed at each side of the 55
in the inner metallic bushing, and the outer me
tallic bushing being received within the cylin_
drical portion 54 of the torque bracket 48, said
cylindrical portion being split along its lower edge
and being provided with a bolt and nut assembly
.56 to effect clamping of the cylindrical portion
54 about the metallic bushing 52.
As seen in Figure ‘3, the bracket 48 comprises
the spaced slots .53, 53 for the reception of the
extremities of the arms 44, 44, and secured to
the bottom of the bracket 138 at the lower extrem
ity of said slots 58, 58 is an angle iron ‘60, said
angle iron affording support ‘for the extremities
of the arms .44, 44 inthe event that the bolt and
nut assembly 46 shouldfail.
'
2,406,048
3
4
each of said side rails, a pair of brackets depend
ing from each gusset, wheel and axle assemblies
supporting said frame and comprising spaced
It will be understood from a consideration of
Figures 1 and 3 that lateral movements of each’
wheel and axle assembly I6 during braking en
axles with wheels mounted thereon, levers car
gagement of the shoes 35, 36 with the discs 38,
rying friction means for engagement with the
33 will cause the brake beam 25 to move laterally
peripheries of said wheels, a brake support mem
of the truck with the wheel and axle assembly
ber adjacent each of said assemblies, friction
59, such movement being resisted to some extent
means on said support members for engagement
by the resilient bushing 52. At each end thereof
with braking surfaces on said assemblies each
each beam 2-! is provided with an upstanding lug
end of each of said support members having a
62 reinforced by the spaced ribs 64, 64, said lug 10 lug for reception within one of the adjacent pair
‘62 being received within the adjacent gusset
bracket 2% and being pivotally secured therewith
of said brackets, said levers being received within
the other of said brackets, and pivot means se
in as at 66 by means of a bolt and nut assembly
curing said levers to said lugs within the asso
(Figure 3) extending through aligned openings in
ciated brackets, said pivot means comprising a
15
the lugs til, it and is, said bolt and nut assem
rigid member extending through each of said
bly being provided with a bushing 68 received
levers and through the adjacent of said lugs, the
within an opening in the lug 62, said lug being
connection between said lugs and said rigid mem
slidable inboardly and outboardly on said bush
bers comprising means affording relative lateral
ing 68 to accommodate the above-mentioned lat
movement between the truck frame and said sup
eral movement of the brake beam 24 with respect 20 port members.
to the truck frame.
2'. In a brake arrangement for a railway car
Single shoe brake rigging is provided at each
truck, a truck frame having spaced side rails,
side of the truck for cooperation with the adja
spaced end rails, spaced transoms connected be
cent wheels ‘H3, iii-of the wheel and axle assem—
tween said side rails intermediate said end rails,
25
blies H3, H3, and said brake rigging comprises the
a gusset formed at the juncture of each transom
dead truck levers ‘l2, 72, each being fulcrumed at
with each of said side rails, a pair of brackets
a pivot point 68 by means of the bolt and nut as
depending from each gusset, wheel and axle as
sembly affording support for the adjacent end of
semblies supporting said frame and comprising
the associated beam 211, as best illustrated in Fig
30 spaced axles with wheels mounted thereon, levers
ure 3, the lever 12 being received within the asso
ciated gusset bracket 22 and extending upwardly
through a slot in the gusset l2 ‘for pivotal con‘
nection as at ‘M to clevis means ‘1'5, the'opposite
end of said clevis being pivotally'connected to the
carrying friction means for engagement with the
peripheries of said wheels, brake beams adjacent
said assemblies, said beams carrying friction
means for engagement with braking surfaces on
said assemblies, each end of each beam having
a support lug for reception Within one of the ad
described. ,
jacent pair of said brackets, said levers being
Each truck lever ‘i2 is pivotally connected at
received within the other of said brackets, and a
18 to a brake head 89 carrying a brake shoe 82
pivot member extending through each of said
for engagement with the periphery of the adja
levers and the adjacent of said support lugs to
cent wheel 18, and also connected at the point 13 40 alford support therefor from the associated
is a tie strap M (Figure 3) xtending transversely
brackets, said lugs being slidable on said pivot
of the truck and affording connection between
members to accommodate relative lateral move
corresponding truck levers at opposite sides
ment between said beams and said truck frame.
thereof in the conventional manner.
3. In a brake arrangement for a railway car
Power means is provided for the single shoe
truck, a truck frame having spaced side rails,
adjacent cylinder lever in a manner hereinafter
brake rigging in the form of a power cylinder de
viceB? secured as at 88, 88 to the side rail and
comprising the piston rod 98 pivotally connected
at $2 to the outboard end of the live cylinder
lever 94, said cylinder lever being pivotally and
adjustably connected at 95 to a pull rod 98, the
' opposite end of which is pivotally and adjustably
connected at N19 to the dead cylinder lever I02,
the outboard end of which is pivoted at Hid to a
slack adjuster device m6 mounted at I98, “38 on
the power cylinder device 85.
spaced end rails, and spaced transoms joining
said side rails intermediate said end rails; a gus
set formed at the juncture of each transom with
each of said side rails, three lugs depending from
each gusset and de?ning a pair of brackets there
on,‘aligned openings through said lugs, wheel and
axle assemblies supporting said frame and com
prising spaced axles with wheels mounted there
on, levers carrying friction means for engagement
with the peripheries of said wheels, brake beams
adjacent said assemblies, said beams having cyl
rI‘he inboard end of the live cylinder lever is
inder housings thereon, friction means supported
pivotally connected at Hi] to the clevis means 18
from said housings for engagement with braking
associated with the dead truck lever 12 at one
surfaces on said assemblies, each end of each beam
end of the truck, and the inboard end of the dead
having support means for reception within the
cylinder lever I82 is pivotally connected at I 12 to
inboard of the adjacent of said pair of brackets,
the clevis means 78 associated with the truck
said levers being received within the outboard of
lever 12 at the opposite end of the truck.
said brackets, and pivot pins extending through
It is to be understood that I do not wish to be
said openings, each of said pins extending through
limited by the exact embodiment of the device (55 one of said levers and one of said support means
shown which is merely by way of illustration and
for pivotal support thereof.
not limitation as various and other forms of the
4. In a brake arrangement for a railway car
device will, of course, be apparent to those skilled
truck, a truck frame having spaced side rails and
in the art without departing from the spirit of the
spaced transoms connected therebetween, a gusset
invention or the scope of the claims.
'
formed at vthe juncture of each transom with
I claim:
each of said side rails, a pair of brackets depend
1. In a brake arrangement for a railway car
truck, a truck frame having spaced side rails and
' spaced transoms connected therebetween, a gus
ving from each gusset, wheel and axle assemblies
supporting I said frame and comprising spaced
axles with wheels mounted thereon, levers car
set formed at the juncture of each transom with 75f
5
2,408,048
rying friction means for engagement with the
peripheries of said wheels, a brake support mem
ber adjacent each of said assemblies, friction
means on said support members for engagement
with braking surfaces on said assemblies, each
end of each of said support members having a
ing for reception within one of the adjacent pair
extending therebetw'een, a gusset formed at the
juncture of each transom with each side rail,
spaced supporting wheel and axle assemblies, each
including an axle and a brake member rotatable
‘therewith, a rigid support member extending
substantially parallel with each assembly, a de
pending
bracket formed on each gusset for the
of said brackets, said levers being received within
reception of a portion of the adjacent support
the other of said brackets, and pivot means secur
ing said levers and said lugs within the asso 10 member, and pivot means securing said portions
within said brackets, said portions being capable
ciated brackets, said pivot means comprising a
of limited inboard and outboard movement on
rigid member extending through each of said
levers and through the adjacent of said lugs.
5. In a brake arrangement for a railway car ,
said pivot means to accommodate relative move
ment between said support members and said
frame, and friction means on said support mem
truck, a truck frame having spaced side rails,
spaced end rails, spaced transoms connected be 15 bers for engagement with the associated of said
tween said side rails intermediate said end rails,
a gusset formed at the juncture of each transom
with each of said side rails, a pair of brackets
depending from each gusset, wheel and axle as
semblies supporting said frame and‘ comprising
spaced axles with wheels mounted thereon, levers
carrying friction means for engagement with the
peripheries of said wheels, brake beams adja
cent said assemblies, said beams having cylinder
housings thereon, friction'means supported from
said housings for engagement with braking sur
faces on said assemblies, each end of each beam
having support means for reception within one
of the adjacent pair of said brackets, said levers
being received within the other of said brack_
ets, and a pivot member extending through each
brake members.
9. In a railway car truck comprising a truck
frame and spaced wheel and axle assemblies each
including an axle with wheels thereon, brake
beams adjacent said assemblies, friction means
on said beams for engagement with braking sur
faces on said assemblies, dead truck levers car
rying friction means for engagement with the
peripheries of the associated wheels, a pin piv
oting each of said levers to said frame and ex
tending through a portion of the adjacent beam
to afford support therefor, and actuating means
for said truck levers comprising power means on
said frame, interconnected live and dead cylin
der levers connected to opposite ends of said
power means, and an operative connection be
tween each cylinder lever and the adjacent truck
lever.
10. In a brake arrangement, a vehicle frame,
truck, a truck frame having, spaced side rails,
spaced end rails, spaced transoms connected be 35 a supporting wheel and axle assembly including
a wheel and a brake member adjacent thereto,
tween said side rails intermediate said end rails,
a brake beam adjacent said assembly, a lever
a gusset formed at the juncture of each transom
carrying friction means for engagement with the
with each of said side rails, a pair of brackets
periphery of said wheel, a pivot pin connecting
depending from each gusset, wheel and axle as
said brake beam to said vehicle frame, said pin
semblies supporting said frame and comprising
affording a pivotal fulcrum for said lever, fric
spaced axles with wheels mounted thereon, levers
tion means carried by said brake beam for en
carrying friction means for engagement with
gagement with said brake member, and actuat
the peripheries of said wheels, brake beams adja
ing means for said lever including a power cyl
cent said assemblies, said beams carrying fric
inder device secured to said frame, a cylinder
tion means for engagement with braking sur
lever, an operative connection between said de
faces on said assemblies, each end of each beam
vice and said cylinder lever, and an operative
having support means for reception within one
connection between said cylinder lever and said
of the adjacent pair of said brackets, said levers
being received within the other of said brackets, 59 ?rst-mentioned lever.
11. In a railway car truck comprising a truck
and a pivot member extending through each of
frame and spaced wheel and axle assemblies, each
said levers and the adjacent of said support
including an axle with Wheels thereon, brake
means to afford support therefor from the asso
beams adjacent said assemblies, friction means
ciated brackets.
on said beams for engagement with braking sur
7. In a brake arrangement for a railway car >
faces on said assemblies, dead truck levers car
truck, a truck frame having spaced side rails
rying friction means for engagement with the
and spaced transoms connected therebetween, a
peripheries of the associated wheels, and means
gusset formed at the juncture of each transom
pivoting said levers and said beams to said frame,
with each of said side rails, a pair of brackets
depending from each gusset, wheel and axle as (ii) said last-mentioned means including means per
mitting movement of said beams laterally of the
semblies supporting said frame and comprising
truck to accommodate relative lateral movement
spaced axles with wheels mounted thereon,
between said assemblies and said frame during
levers carrying friction means for engagement
engagement of said ?rst-mentioned friction
with the peripheries of said wheels, a brake sup
means
with said braking surfaces.
port member adjacent each of said assemblies,
lever and the adjacent of said support means.
6'.>In a brake arrangement for a railway car
friction means on said support members for en
gagement with braking surfaces on said assem
blies, each end of each of said support members
having means for reception within one of the
adjacent pair of said brackets, said levers being '’
received within the other of said brackets, and
pivot means securing said levers and said last
mentioned means within the associated brackets.
8. In a railway car truck, a truck frame in
eluding-spaced side rails and spaced transoms
12. In a railway car ‘truck comprising a truck
frame and spaced wheel and axle assemblies each
including an axle with wheels thereon, brake
beams adjacent said assemblies, friction means
on said beams for engagement with braking sur
faces on said assemblies, dead truck levers com
prising friction means for engagement with the
peripheries of the associated wheels, and a pin
pivoting each of said levers to said frame and ex
tending through a portion of the adjacent beam
to afford a support therefor, said beams being
7
shiftable laterally of the truck on said pins to
accommodate relative lateral movement between
8
means and adapted for engagement withv brake
surfaces on said assemblies.
20. In a vehicle structure, a frame comprising
said frame and said beams.
spaced side rails and spaced transoms connected
13. In a brake arrangement, a vehicle frame,
therebetween, a brake beam adjacent each tran
supporting wheel andaxle assemblies including $1 som, a brake lever adjacent each end of each
spaced axles and wheels mounted thereon, brake
beam, a gusset formed at the juncture of each
levers carrying, friction means for engagement
transom with each side rail, lugs depending from
with the peripheries of said wheels, pivot means
each of said gussets and de?ning therewith a
pivotally fulcruming said levers from said frame,
pair of inboard and outboard brackets, aligned
and friction means supported from said pivot
openings in said lugs, and pivot means extend
means and adapted for engagement with brake
ing through each of said openings and an asso
surfaces on said assemblies, said friction means
ciated brake lever and brake beam.
including a support member, spaced brake levers
21. In a brake arrangement, a truck frame
fulcrumed from ‘said support member, and brake
comprising spaced side rails and spaced transoms
shoes carried by respective levers.
connected therebetween, supporting ‘wheel and
14. In a railway car truck comprisinga truck
axle assemblies including spaced axles and wheels
frame and spaced wheel and axle assemblies, each
mounted thereon, brake levers carrying friction
including an axle with wheels thereon, brake
means for engagement with the peripheries of
beams adjacent said assemblies, friction means
the associated wheels, brake beams extending ‘be
on said beams for engagement with braking sur 20 tween said side rails substantially parallel with
faces on said assemblies, dead truck levers carry
the respective wheel and axle assemblies, friction
ing friction means for engagement with the pe
means on said beams for engagement with fric
ripheries of the associated wheels, and a pin
tion surfaces on said assemblies, and support
pivoting each of said levers to said frame and
means on said frame at the juncture of each
extending through a portion of the adjacent . transom with each side rail for said beams and
beam to afford support therefor.
said levers, said support means comprising com
15. In a railway car truck, a truck frame and
mon pivot means for pivoting each of said levers
spaced wheel and axle assemblies, each including
and a portion of the adjacent beam to said frame.
an axle with wheels thereon, brake beams adja
'_ 22. In a brake arrangement for a railway car
cent said assemblies, friction means on said beams 30 truck, a truck frame comprising spaced side rails
for engagement with braking surfaces on said
and spaced transoms connected therebetween, a
assemblies, dead truck levers carrying friction
means for engagement with the peripheries of
the associated wheels, and common means pivot
ing each of said levers and a portion of the ad
jacent beam to said frame.
16. In a railway car truck comprising a truck
frame and spaced wheel and axle assemblies, each
including an axle with wheels thereon, brake
beams adjacent said assemblies, friction means
on said beams for engagement with braking sur
faces on said assemblies, dead truck levers carry
ing friction means for engagement with the pe
gusset formed at the juncture of each transom
with each of said side rails, a bracket depending
from each gusset, Wheel and axle assemblies sup
porting said frame, a brake support member ad
jacent each of said assemblies, a brake support
member adjacent each‘ end of each assembly, fric
tion means on said support members for engage
ment with braking surfaces on said assemblies,
and common pivot means securing each of said
last-mentioned support members and each end
_of each of said ?rst-mentioned support members
to the adjacent bracket.
ripheries of the associated wheels, and means In
23. In a brake arrangement for vehicles, a
pivoting each lever and the associated beam at i frame supporting spaced side rails and spaced
a common point to said frame.
17. In a brake arrangement, a vehicle frame,
a supporting wheel and axle assembly including
a wheel and a brake member adjacent thereto,
a brake beam adjacent said assembly, a lever '
carrying friction means for engagement with said
wheel, a pivot pin connecting said brake beam
to said vehicle frame, said pin affording a pivotal
fulcrum for said lever, and friction means car
ried by said brake beam for engagement with
said brake member.
‘transoms connected therebetween,
a gusset
formed at the juncture of each transom with
each of said side rails, a bracket depending from
each gusset, wheel and axle assemblies support
ing said frame, brake beams adjacent said as
semblies, said beams carrying friction means for
engagement with braking surfaces on said as
semblies, and each end of each beam having a
support lug for reception within the adjacent
bracket'and a pivot‘member extending through
each associated lug and bracket to afford support
18. In a brake arrangement, a vehicle frame,
for said beams, and a brake support member
a supporting Wheel and axle assembly including
supported from said pivot member and carrying
a'wheel, a radial brake surface on said assembly,
friction means for engagement with an adjacent
60
brake support means adjacent said surface, a
Wheel.
lever carrying friction means for engagement
24. In a brake arrangement for vehicles, a
with the periphery of said wheel, pivot means
frame having spaced side rails and spaced tran
connecting said brake support means to said
soms connected therebetween, a gusset formed at
frame, said pivot means also affording a pivotal 65 the juncture of each transom with each side rail,
spaced supporting wheel and axle assemblies, each
fulcrum for said lever, and friction means sup
including an axle and a brake member rotatable
ported by said support means for engagement
therewith,
a brake beam extending substantially
with said surface.
parallel with each assembly, a depending bracket
19. In a brake arrangement, a vehicle frame,
supporting wheel and axle assemblies including 70 formed on each gusset for the reception of a
' portion of the adjacent brake beam, pivot means
spaced axles and wheels mounted thereon, brake
levers carrying friction means for engagement
with the peripheries of said wheels, pivot means
, pivotally fulcruming said levers from said frame,
said pivot
and friction. means . supported from
securing said portionswithin said brackets, and
friction means on said beams for engagement
with an associated-brake member; and abrake
75 lever supportedfrom said pivotmeans and carry
9
2,406,048
ing friction means for engagement with a brak
ing surface on the adjacent assembly spaced from
the brake member thereon.
25. In a brake arrangement, a vehicle frame,
a supporting wheel and axle assembly including
a wheel and a brake member adjacent thereto,
a brake beam adjacent said assembly, a lever
carrying friction means for engagement with the
periphery of said Wheel, pivot means connecting
said brake beam to said vehicle frame, said pivot
10
I'means carried on said beam for engagement with
said brake member, and a brake support mem
ber supported from said pivot means and carry
ing friction means for engagement with said
wheel.
28. In a brake arrangement, a vehicle frame
including spaced side rails and spaced transoms
connected therebetween, wheel and axle assem
blies supporting said frame and comprising spaced
axles with wheels and brake members mounted
means also affording a pivotal fulcrum for said
thereon, a brake beam adjacent each assembly,
lever and permitting limited inboard and out
a support memberadjacent each end of each
board movement of said beam to accommodate
assembly, common pivot means connecting each
relative movement between said beam and said
frame, and friction means carried by said brake , member and an adjacent portion of each- beam
to said frame at the juncture of each transom
beam for engagement with said brake member.
with each of said side rails, and friction means
26. In a brake arrangement, a vehicle frame,
on said beams and support members for engage
a supporting wheel and axle assembly including
ment with the associated of said brake members
a wheel and a brake rotor, spaced brake sup
and wheels,
port members adjacent said assembly, common -;
29. In a brake arrangement for a car truck in
pivot means supporting said members from said
cluding
a truck frame and a supporting wheel
frame, and friction means carried by one of said
and axle assembly, the combination of friction
members for engagement with said wheel and
means for engagement with the tread surface
friction means carried by the other of said mem
of said wheel, friction means for engagement
bers for engagement with said rotor.
with a substantially radial surface of said as
27. In a brake arrangement, a vehicle frame,
sembly, a support member for each of said fric
a supporting wheel and axle assembly including
tion means, and a pivot pin pivotally connecting
a Wheel and brake member adjacent thereto, a
both
of said members to said truck frame.
brake beam adjacent said assembly, pivot means
connecting said beam to said frame, friction 30
CARL E. TACK.
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