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Патент USA US3033140

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May 8, 1962
Filed April 14, 1960
2 Sheets-Sheet 1
May 8, 1962
Filed April 14, 1960
É/ /
2 Sheets-Sheet 2
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Unite Staes
Patented May 8, 1962
Other and more detailed objects of the present inven
tion will >‘be readily appreciated by those skilled in the art
from a consideration of the following specification, the
Paul N. Erickson, Birmingham, Mich., assignor to Evans
Products Company, Plymouth, Mich., a corporation of
appended claims, and the accompanying drawings
FIGURE 1 is a transverse sectional view of a refrig
Filed Apr. 14, 1960, Ser. No. 22,269
5 Claims. (Cl. 10S-396)
erated railroad car constructed according to the present
invention and showing the interior of the car in perspec
tive, the undercarriage ‘being omitted and portions being
The present invention relates to refrigerated railroad
cars and more particularly, to an improved construction 10 broken away to show additional features of construction;
FlGURE 2 is an enlarged sectional view of that por
for such a car in which the insulated side walls of the car
are provided with supporting elements for co-operating
with freight bracing members to enable the improved
bracing and supporting of merchandise in fully refriger
tion of the structureshown in FIGURE 1 indicated by
the circle 2 thereof;
FIGURE 3 is a sectional view in perspective showing
15 a portion of the structure illustrated in FIGURE 2 and
ated railroad cars.
In the railroad industry a well recognized distinction
having portions removed to show additional detail; and
has developed between insulated cars and refrigerated
FIGURE 4 is an enlarged sectional view of the portion
of the structure illustrated in FÍGURE 1 indicated by
cars, the former term “insulated cars” being used to refer
to cars which do not carry any refrigeration system and
the circle 3 thereof.
Referring to the drawings, there is there illustrated one
which are provided with only token insulation. it is well 20
known to equip insulated cars with supporting elements
preferred embodiment of the present invention and it will
along the side walls for co-operation in the supporting and
be appreciated that the improvements of the present in
bracing of merchandise in the cars. The term “refrig
vention may be readily embodied in constructions employ
ing a wide variety of freight bracing apparatus support
erated car” is recognized in the railroad industry as iden
tifying a car which carries its own refrigerating system 25 ing elements. For purposes of illustration, but not by way
and which is fully insulated. In these cars the manufac
of limitation, in the preferred embodiment illustrated, the
turers have continuously refused to permit any installation
supporting elements shown are angle-shaped belt rails as
of supporitng elements for use as a part of the freight
hereinafter described. The improvements of the present
bracing apparatus on the insulated side walls of the cars
invention may obviously be readily employed for the sup
where this installation results in detracting in any way 30 port of supporting elements of widely diifering shapes
from the insulating characteristics of the unmodified re
and sizes.
frigerated car. Accordingly, it has been impossible to
In FIGURE l the refrigerated car there illustrated is
mount such Vsupporting elements in refrigerated cars by
connecting these supporting elements to the outer walls of
generally designated yby the reference character 10 and
the car, or in any way modifying the construction in a
manner such as to provide a path along which heat may
the opposite side walls thereof each include an outer sheet
12 of sheet metal. inwardly of this outer sheet each
side wall includes a relatively thick layer of insulating
more readily flow from the refrigerated compartment to
material 14 disposed adjacent thereto and two additional
the outer walls of the car.
layers of insulating material 16 and 18 disposed inwardly
The assignee of the present application has developed
and marketed under its trademarks “QL” and “DF” im
thereof. Structural support for each side wall is provided
-by a series of longitudinally spaced vertically extending
proved freight bracing apparatus for the supporting and
post members 2t), in accordance with conventional car
bracing of merchandise in freight cars. One form of
construction, these posts 20 being of what is known as hat
this “DF” apparatus is illustrated in Tobin et al. Patent
section shape, as illustrated in the lower left-hand portion
No. 2,725,826, and one preferred form includes belt rails
of FIGURE 1, and the outer sheet y12 being secured
mounted upon and extending longitudinally of the side 45 thereto as by welding. The posts ‘20 carry a plurality
walls of the car. These belt rails may be used either to
of vertically spaced longitudinally extending stringers
support cross-bars, one form of which is illustrated in the
22 formed of wood or other suitable insulating material
above mentioned Tobin et al. patent, or they may be used
and which are supported in spaced relation relative to the
as a part of the “QL” apparatus to support and secure in
post 2li by laminated insulated blocks ‘24 which are
place a movable bulkhead, one form of which is illustrated 50 formed of a suitable insulating material such as hard
in the co-pending application of S. M. Nampa, Serial
board or plywood. The above mentioned insulating
No. 669,170, filed July 1, 1957, also assigned to the as
layers la and 18 extend vertically ybetween the adjacent
signee of the present application.
It is an object of the present invention to provide an
horizontally extending stringers 22. Inwardly of the
improved refrigerated railroad car Construction including
55 inner insulating layer 18 is a dead-air space 26 which is
tioned type which is readily usable with supporting ele
ments of widely differing shapes and designs.
previously known refrigerated railroad cars.> _In accord
ance with conventional practice, such cars also> include,
defined by spaced layers 28 and 30 of hardboard or other
supporting elements adapted to form a part of a freight
suitable material, the layer 28 being against the inner sur
bracing apparatus and including an improved construc
face of the ‘layer 18 and extending between adjacent upper
tion for mounting these support elements on the insulated
and lower stringers 22 and the layer 3@ being secured to
sidewalls of the refrigerated car.
the inner faces 32 of the stringers 2‘2. Also secured to
It is a further object of the present invention to provide
and supported on the stringers‘ZZ are a plurality of verti
such an improved construction which does not materially
cally extending longitudinallyV spaced inner dining sup
alter the insulating characteristics of the unmodified in
porting members 34 which, in the preferred embodiment
sulated side wall of the refrigerated car.
illustrated, are 2 X 4’s . These verticals 34 are secured
It is a further object of the present invention to provide
to the stringers Z2. by suitable securing means (not shown)
such an improved refrigerated car construction which is
such as nails, screws, bolts orthe like extending through
readily adapted either for incorporation in the car during
the hardboard layer 30. The inner lining of each side
the initial manufacture thereof, or for incorporation in
wall consists of a plurality of longitudinally _extending
existing cars by a modification thereof.
and groove interfìtted wood lboards *36.
It is a further object of the invention to provide an
The construction so far described is_conventional in
improved refrigerated car construction of the above men 70
as above mentioned, their own refrigerating system (not
be supported on and attached to the belt rails 46 by
shown) and circulate air into a header space in the over~
head, which space is indicated at 38 and from which the
air circulates down through the side walls between the
which may be of the construction illustrated and dc
sprockets and fittings or latch members (not illustrated)
scribed in the above mentioned co-pending Nampa appli-
inner lining boards 36 and the hardboard 30 through
vertically extending air channels 4t) between the spaced
verticals 34. Also, in accordance with conventional prac
tice, this air flows into the merchandise compartment ad
cation, Serial No. 669‘,l70, or of any other suitable con~
struction. Also, as pointed out above, if desired the
belt rails 46 may be employed to ysupport crossbars (not
shown) of any suitable construction, one embodiment
jacent the floor 42 of the car and returns below the floor
of which is illustrated and described in the above men
grate 44 which supports the merchandise in spaced re 10 tioned Tobin et al. Patent No. 2,725,826.
lation above the ñoor 42.
FIGURE 4 illustrates the mounting of the uppermost
In accordance with the present invention, the above
belt rail 46. Since this uppermost belt rail 46 is to be
described conventional construction is modified at a
mounted substantially below the uppermost Stringer 22,
plurality of vertically spaced points along the car wall
and since the support for the belt rail 46 in this case re
vertically aligned with the stringers 22 to provide a suit 15 places the uppermost inner lining boards 36, the support
able mounting for freight bracing apparatus supporting
ing plate 54' corresponding to the above described sup
elements, which in the preferred embodiment illustrated
porting plate 54 has its upper edge portion 58' spaced
are the angle-shaped belt rails 46 which extend longi
from the upper edge portion 50 of the plate 48 to define
tudinally of the car.
an upwardly facing channel portion adapted to receive
At each level at which a belt rail 46 is to be mounted
the ceiling Stringer 84. Also, in place of the clips 66, the
the car wall inner lining 36 is omitted or removed to pro
assembly comprising the plate S4’ and the plate 4S to
vide an opening defined by spaced upper and lower inner
lining boards 36 and there is substituted between the
spaced upper and lower inner lining boards 36 the belt
rail supporting structure best illustrated in FIGURE 2 25
22 by a plurality of longitudinally spaced hangers 86,
the depending flange S8 of which is welded to the central
portion of the plate `4S and an upwardly extending flange
which, as there illustrated, comprises an elongated flat
metal strip or plate 48 disposed to extend horizontally
9€? of which is secured by suitable bolts 92 to the upper
most stringer 22. The lower portion of the construction
of the car through the air channels A4G and with the upper
illustrated in FIGURE 4 is the same as that illustrated in
which it is secured is supported on the uppermost Stringer
and lower portions thereof, 50 and 52, respectively, in
FIGURE 2 and described above.
engagement with the upper and lower inner lining boards 30 While only one specific embodiment of the invention
36. The verticals 34 may be relieved to tit over the
has been illustrated and described herein, it will be
strip `48.
readily appreciated by those skilled in the art that numer
A second elongated metal strip or plate 54 of hat
shaped cross section has a central web portion 56 dis
posed in engagement with and welded to the central por
ous modifications and changes may be made therein
without departing from the spirit of the present invention.
What is claimed is:
tion of the strip 48 and having upper and lower offset edge
portions 58 and 6G, respectively, which overlie the oppo
site surface of the upper and lower inner lining boards 36
and thus co~operate with the upper and lower portions
50 and 52 of the strip 58 to deiine upwardly and down‘ 40
wardly facing channels which receive the adjacent edge
portions of the upper and lower boards 36.
As best illustrated in FIGURE 2, a continuous layer of
a sealing and adhesive material 62 is provided between
l. In a `refrigerated railroad car having insulated side
walls, spaced vertical metal reinforcing members in said
side walls, vertically spaced horizontal non-metallic
Stringer members disposed inwardly of said car relative
to and mounted on said reinforcing members, each of
said side walls also including a car inner lining which in
cludes vertically spaced upper and lower car inner lining
portions, horizontally disposed metal structural means
extending longitudinally of said car and substantially co
the channels deñned by the plate portions Sti, 52, 58 and 45 extensive in length with said side walls and disposed be
60 and the portions of the lining boards 36 received
tween spaced upper and lower car inner lining portions
therein. Also, screws or bolts 64 may be provided ex~
and defining upwardly and downwardly opening chan
tending through the channels defined by the plates 48 and
nels ñtted over and receiving said upper and lower car
54 and through the boards 36 received therein, to draw
inner lining portions, a substantially continuous layer
the channels up tightly against the boards 36. The plate
of sealing material between each of said upper and lower
48 is supported on the adjacent Stringer 22 by a plurality
inner lining portions and the channel in which it is re
of spaced clips 66, each of which, as best illustrated in
ceived, said structural means being disposed inwardly of
FIGURE 2, has a central web portion 68 extending along
said car relative to said Stringer members in spaced re
and welded to the adjacent outer face of the central por
tion of the strip 48 and has a pair of oppositely extending
flange portions 70 disposed in spaced parallel relation to
the web portion 68 and which are secured to the stringers
lation thereto to permit the circulation of air there
between, supporting means disposed between said Stringer
members and said structural means at a plurality of points
spaced longitudinally thereof and connected to said string
22 by screws 72 extending through the hardboard layer
er members and to said structural means to support said
30 and into the stringer 22.
structural means on said Stringer members, and a hori
In the preferred embodiment, in addition, a layer of 60 zontally disposed belt rail extending along and connected
adhesive material 74 is also provided between the clip
to and supported on said structural means.
flanges 70 and the hardboard 30. The adhesive material
2. In a refrigerated railroad car having insulated side
indicated at 62 and 74 is a conventional structural ad
walls, spaced vertical metal reinforcing members in said
hesive material which performs both sealing and bonding
side walls, vertically spaced horizontal non-metallic
functions. The web portion 56 of the strip 54 provides a 65 Stringer members disposed inwardly of said car relative
support upon which may be mounted the belt rail 46 or
any other suitable freight bracing apparatus supporting
element. In the preferred embodiment illustrated the
angle-shaped belt rail 46 is disposed with a vertical flange
76 extending along and in contact with the web portion 70
56 and is welded thereto and the horizontal flange 78 of
the belt rail is provided with a plurality of spaced aper
tures Si). As indicated above, the particular belt rail 46
illustrated is adapted for cooperation with a freight sup~
porting and bracing bulkhead indicated at 82 which may
to and mounted on said reinforcing members, each of said
side walls having an inner lining which includes vertically
spaced upper and lower inner lining elements disposed ad
jacent one of said Stringer members, metal structural
means disposed between said upper and lower lining ele
ments extending longitudinally of said side walls of said
car and sealed to each of said elements to substantially
prevent the ñow of air or moisture therebetween, said
structural means being disposed inwardly of said car
relative to said Stringer members in spaced relation there~
supporting said structural means on said one of said
of said car relative thereto, said clips being spaced rela
tive to each other to permit the flow of air past said
clips between said Stringer member and said structural
Stringer members, and a belt rail extending longitudinally
of and supported on said structural means.
5. The combination defined in claim 3, wherein said
intermediate support portion is recessed relative to the
inner surface of said inner lining and wherein said belt
rail is disposed substantially wholly Within said recessed
to to permit the circulation of air therebetween, a plural
ity of supporting means spaced longitudinally of and
3. The combination deiined in claim 1, wherein said
`structural means includes a pair of interconnected plates
deiining spaced oppositely facing channel portions adapted
to lit over said upper and lower inner lining portions and
an intermediate support portion along which said belt 10
References Cited in the tile of this patent
trail extends.
4. The combination defined in claim 1, wherein said
means supporting said structural means comprises a
plurality of clips spaced longitudinally of said structural
means and supporting said structural means on said 15
Stringer member in spaced relation thereto and inwardly
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