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Патент USA US2127916

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Aug. 23, 1938.v
E. G. HALLQUIST' ' I
2,127,916
RAILWAY TRUCK STRUCTURE
v Filed July 13, 1935 ‘
2 Sheets-Sheet 1
Aug. 23; 1938.
E. e. HALLQUIST
-
2,127,916
RAILWAY TRUCK STRUCTURE
Filed July 15, 1.935
2 Sheets-Sheet 2
IMII
17 34
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Patented Aug. 23, 1938
2,127,916
UNITED STATES PATENT OFFiCE
‘2,127,916
RAILWAY TRUCK STRUCTURE
Einar G. Hallquist, Wallingford, Pa., assignor to
General Steel Castings Corporation, Granite
City, 111., a corporation of Delaware
Application July 13, 1935, Serial No. 31,143
8 Claims. (01. 105-490)
This invention relates to railway rolling stock
prises framing including side frames I, end sills
and consists in novel truck structure particularly
‘adapted for passenger service.
2, and transoms 3. Depending from the side
frames are the pedstal jaws 4 having the usual
Previously passenger trucks with lateral swing
motion bolsters have included swing hangers
usually pivoted to the truck framing inside the
one of which is shown at 6. Extending on each
side of the truck beneath the side frame is an'
liners 5 receiving therebetween journal boxes,
side frames or Wheel pieces, a spring plank ex—
equalizer, generally indicated at 1, and having
tending between the lower parts of the hangers
bifurcated end portions 8 extending on each side
of the pedestals and mounted on the journal
for stabilizing the same and providing seats for
to elliptic springs on which the bolster is carried.
The bolster‘ springs constitute the sole connec
tions between the springplank and bolster and
are subjected to undesirable lateral forces during
transverse swinging of the bolster which is lim
ited by rigid stops thereon opposing the inner
faces of the truck side frames. The hangers,
springs and spring plank limit the space available
for the brake rigging associated with the truck
wheels and the bolster must be located at a suf
ficient height above the spring plank to permit
vertical movement of the bolster due to the ac~
tion of its supporting springs.
An object of the present invention is to pro~
vide a lateral swing motion truck having greater
stability than lateral motion trucks constructed
as described above.
Another object is to prevent the application of
boxes. Frame supporting coiled springs, dia
grammatically indicated at 9, engage the seat ele
ments Iii on the equalizer and II on the side
frame.
i
Portions of each side frame outwardly of the
spring seats‘ H and between these seats are of ll
relatively narrow box-section, as indicated at l2
in Figure 4. Each frame is provided with a pair
of enlarged and downwardly hollowed portions I3
receiving the upper spring seats ll. Brake
hanger brackets l4 project from the enlarged
portions l3 of the side frame. It will be under
stood that in the completed truck, brake hangers
(not shown) supported by pins as at l5 and car
rying the’ usual brake heads and shoes, will de
pend adjacent the wheels l? for applying brak
ing pressure thereto, suitable brake beams, brake
levers and connecting rods being provided for
lateral forces to the bolster springs during swing- ' this purpose.
ing of the bolster.
Another object is to position the bolster swing
hangers and lateral motion stops so as to be
more accessible for inspection and repair than
the corresponding parts heretofore.
Another object is to lower the center'of gravity
of the truck.
<
Still another object is to provide truck side
frame and equalizer construction which is sub
stantially lighter than the corresponding parts
it)
of previous trucks.
These objects and others hereafter appear~
ing are attained substantially by the structures
illustrated in the accompanying drawings, in
which“
‘
Figure 1 is a half top view of a truck embody
4 5,A ing the invention, portions being broken away
for‘ clearer ‘ ‘illustration.
Figure 2 is a side view of the same, the right
half being a vertical section on the longitudinal
center line of the truck.
Figures 3 and 4 are vertical transverse half
sections taken on the corresponding section
lines of Figure 1.
Figure 5 is a detail vertical transverse section
taken on the line 5—5 of Figure 1.
The truck illustrated in Figures 1 to 5 com
Extending outwardly from each side frame ad
jacent the spring seat enlargements l3 are brack
ets I‘! to which are pivotally secured the hangers
is connected at their lower extremities by a 1on
gitudinal bar l9. Movably or non-rigidly seated
on the bar i9 is a bearing element 20 which in
turn mounts the end of the combination spring
seat and hanger stabilizer member generally in
dicated at 2!. The member 2| comprises an
outer end portion, including the lugs 22 for re
ceiving therebetween the lower band 23 of the
elliptic spring 24, a portion 25, resting on the
bearing 2i), and the integral arms 26 extending
inside the bolster 2'! and pivoted to the side walls
thereof by means of the rod or bar 28 extending
through the bolster walls at points spaced sub
stantially inwardly from the hanger. The rod 28
is in the form of a long bolt having a head 29
and nut 30 for securing the same in position.
The bolster 21 has downwardly opening hollow
end parts receiving elliptic springs 24, the upper
bands 3| of which are seated between lugs 32 on
the under-surface of the bolster top wall. At the
center of the bolster is a center bearing structure
33. At each end of the bolster is an upwardly ex
tending rib 34 opposing the outer face of the
side frame and forming a stop for cooperating 55.
2
2,127,916
with the side frame in limiting lateral movement
of the bolster.
Equalizer 1 adjacent the bifurcated ends 8
thereof has a vertical web 1a and top and bottom
?anges lb‘ on both sides of the vertical web. The
portion of the equalizer top ?ange adjacent hang
10
extending generally over said equalizer, swinging
links suspended from said Wheel piece, a bolster 5
extending between said wheel piece and said
ers l8 and bar [9 extends inwardly only from
equalizer and carried on said swinging links, a
the vertical web, as at 35, in order to clear the
portion of said wheel piece being offset inwardly
of the truck adjacent said swinging links to ac
hanger and bar.
The inwardly extending central portion of the
equalizer top web is substantially the same width
as the bottom ?ange. Wheel piece I is offset in
wardly adjacent the bolster and the recess formed
thereby accommodates the upper ends of hangers
I8 and rib 34 on the bolster avoiding undue
widening of the truck. The center portions of
transoms 3 and the top of the bolster are located
beneath the level of the wheel pieces, and the
bottom web 36 of the bolster is located approxi
mately at the level of the equalizer top ?ange.
Hence, the center of gravity of the truck is sub
stantially lower than is possible where the bol
ster is wholly above a spring plank extending
across the truck above the equalizers.
The location of the bolster hangers outside
commodate the mounting of the latter on the 10
outer side of the wheel piece.
4. In a railway truck, wheels and axles, jour
nal boxes, an equalizer carried by said boxes, a
frame including a wheel piece carried by and
extending generally over said equalizer, swinging
links suspended from said wheel piece, a bolster
extending between said wheel piece and said
equalizer and carried on said swinging links, a
portion of said equalizer being offset inwardly of
the truck adjacent said swinging links to ac
commodate the mounting of the latter on the
outer side of the wheel piece.
5. In a railway truck, wheels and axles, jour
nal boxes, an equalizer carried by said boxes,
a frame including a wheel piece carried by and 25
the side frames provides for greater stability of
extending generally over said equalizer, swinging
the truck and these hangers so positioned do
links suspended from said wheel piece, a bolster
not interfere with the brake rigging which usually
extending between said wheel piece and said
equalizer and carried on said swinging links, por~
tions of said wheel piece and said equalizer being 30
offset inwardly of the truck adjacent said swing
ing links to accommodate the mounting of the
does not extend outwardly farther than the wheel
30 tread. The hangers and bolster stops 34 are
readily accessible for inspection purposes.
The truck is substantially lighter than pre
vious four-wheel passenger trucks, due to the
novel construction of the framing and equalizers,
35 and is also more stable due to the wide spacing
of the bolster swing hangers and the lower cen
ter of gravity made possible by the elimination
of the spring plank. Elimination of lateral forces
upon the bolster springs substantially improves
the riding qualities of the truck. The outside
location of the bolster hangers obviously in
creases the space provided for brake rigging and
makes these hangers readily accessible.
The invention is not limited to the details il
lustrated, but may be modi?ed as will occur to
those skilled in the art.
For example, rubber
blocks or pads or other shock-absorbing means
may be substituted for the springs illustrated and
described. In the combinations claimed below
such shock-absorbing means would be the full
equivalent of the springs illustrated. The exclu
sive use of this and other modifications as come
within the scope of the appended claims is con
templated.
55
3. In a railway truck, wheels and axles, jour
nal boxes, an equalizer carried by said boxes,
a frame including a wheel piece carried by and
What is claimed is:
'1. In a railway truck, framing, a swing hanger
pivoted thereto, a bolster yieldingly carried at
one end by said hanger, said bolster having spaced
side walls, and a pair of rigid arms connected
to the lower part of said hanger and pivoted to
said walls.
2. Structure as specified in claim 1 in which
the pivotal connection of said rigid arms and
said bolster walls is effected by means of a rod
latter on the outer side of the wheel piece.
6. In a railway truck, framing, an equalizer
extending beneath the same, and a bolster swing
hanger pivoted to said framing and extending
outside said equalizer and beneath the level of
the upper part thereof, a portion of said equal
izer having an outwardly extending top ?ange
and said top flange being cut away on the out
side adjacent said hanger to provide clearance
for the same.
7. In a railway truck, wheels and axles, jour
nal boxes, an equalizer carried by said boxes,
a frame including a wheel piece carried by said 45
equalizer, swinging links suspended from said
wheel piece outwardly of said equalizer, a yield
ing support structure carried by said swinging
links, a bolster mounted on said support struc
ture, a portion of said bolster extending down 50
wardly to the approximate level of the top of said
equalizer, and a stabilizing member extending
over said equalizer and connecting said swinging
links and said bolster above the level of the lower
portions thereof.
55
8. In a railway truck, a side frame, a swing
hanger pivoted thereto, an elliptic spring dis
posed transversely of the truck and carried by
said hanger, a bolster mounted on said spring
and having a downwardly opening hollow part 60
receiving the inner end of said spring, and a
link member connected to said hanger and ex
tending into said bolster hollow part beneath said
spring and pivotally secured to said bolster.
extending through said walls and the ends of
said arms.
40
EINAR G. HALLQUIST.
65
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