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Oct. 1, 1946.
2,408,473
. c. P. NELSON
DUST SEAL FOR ADJ'OINING RAILROAD CARS
4 Sheets-Sheet l
Filed June 21, 1945
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Oct. 1, 1946.
c. P. NELSON
2,408,473 ‘
DUST SEAL FOR ADJOINING RAILROAD CARS
'4 Sheets-Sheet 2
Filed June 21, 1945
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‘Oct. 1, 1946.
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2,408,473
c. P. NELSON ,
DI‘JST SEAL FOR ADJOINING RAILROAD CARS
Filed June 21, .1945
4 Sheets-Sheet s
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Oct. 1, 1946. Y
2,408,473
c. P. NELSON
DUST SEAL FOR ADJOINING RAILROAD CARS
> Filed.June 21, 1945
4 Sheets-Sheet 4
7
2,408,473
Patented Oct.’ 1, 1946
OFFICE
~ _ UNITED STATES PATENT‘
2,408,473
nUsrr- SEAL iron ADJOININGRAILBQAD,
CARS‘
ClarencevP-i Nelson, Chicago, Ill;
Application June; .21, 1945,]SerialiNo. 600,711
~
8 Claims.
1-
'I'hepresent invention relates generally to dust
seals. Moreparticularly. the; invention relates to
that type of dust seal. which‘ is applied» to the
outer abutting diaphragm plates of,a pair ofv ad
joining vestibule variety railroad cars andseryes
aslarmedium, or instrumentality for preventing
dustand other matter on the outside of the cars
fromlpassing. between the. outer diaphragm plates
andentering the ,car. Vestibules;
(01. 105—20');
‘
,
nect the tWo’st'rip-sections, provided‘ that the.
substitutedcanlike.thecar for which itis sub;
stitllted; , has , a_ complementalstrip-section,
Another, object. of‘ the invention is to. provide a,v
dust seal; of_. the, last‘ mentionedv type and char
acter in, which the quickly detachable. connecting
means between the outer marginsof the strip
seetions is in the f'ormfof‘a slide fastener‘ ar
rangement; and“ the outer margins of‘ the strip;
Ithas heretofore~ been proposed to utilize as a 10 sections'haye outer and‘ inner ?aps‘whichwhen
dustseallofcv this type, aonerpiece strip of rubber
the .sealis in its operative positionas the result
of', the two complemental strip-sections" being
connected" together: by, the‘ quickly detachable
to-securev the strip, inplacecby clamping the side
connecting‘means; are arranged'in-abutting rela
margins. thereof to the inner margins of the
outer diaphragmplatesby way. of, metallic strips 15 tion and serve to protect such ‘means against»
or, other dustand ?uidlimperrvious material and
andfbolt's extending through; aligned holes in the
stripsathe“ sidev margins- of the. dust strip and the
inner marginsof the diaphragm plates. In prac
tice it has. been found; that, a dust seal;in\. the, ,
dust, rain and snow.
-
‘
'
_
’
A further objector; the invention is to; provide
a dust seal of' the aforementioned» character in
which- the two complemental strip-sections are
form. of.‘ a, one-piece: strip, is objectionable for 20 formed with longitudinally extending pleats in
order that they 'aref'ree- to stretch laterally when
severalireasons,‘eyenthough it"ful?llsitsintended
purpose,
Inl the, ?rstlplacet such a seal' requires‘
the~ two’ cars to-- which the» seal is app1led'- travel‘
considerable time to, detach in connection with
aroundia'curve,
'
'
uncoupling ofjthe twocars‘becauseit‘lis necessary
A-stilrfurth'erobiect of the inventionis'to pro
to- release oneoi‘the side, margins of‘ the dust. 25 vide' a‘ dust seal of the t-ypeunder consideration
strip" by, withdrawing the bolts. and metallic
which is generally ofenelw and-improved construc-»
clamping strip. which. are, associated therewith.
tion, maybe‘ manufactured at a lowand- reason»
able costgte?icien'tly and effectively-ful?lls its in
Secondly,_ such a;d'ust. seal has but av short life
because repeated'strip.releasingoperations which
tended- purpose 7 and.‘- possesses comparatively long
are necessary, during, servicing, and‘ inspection of i 30 life:
~
'
thecarsresultintearing of, and‘ other damage r
‘ Qther objects of the-invention‘ and the various
to,,. the dust strip. 'I'hirdly,v complications‘ arise
advantages andv characteristics of the present‘.
when a different‘ car is substitutedlfcr. one‘of the
dustE seal will~ be apparent from a consideration
two carsandit is found that‘ the substitutedcar
of the following detailed‘ description.
andv the other: can both . have. dust v strips on_ their
outer diaphragm. platesor it .isfound. that neither
offthetwo cars. has adust strip attached‘ to its
outer diaphragm‘ plate;
The invention‘ consists in ~ the severalinovelifeaa
. tures= which are hereinafter set forth and are
' moreaparticularly de?ned by claims at’ the con
clusion hereof?
I The primary or, principal object, of the present
In the drawingswhich‘ accompany and form a
invention is to provide a. dust seal; of ' the, type 40 part of.r this. speci?cation or- disclosure and, in,
under consideration; which. is an improvement
which, like numerals of reference denote corre
upon,and. eliminates the, deflections o_f,_. previously
margins of; which, are permanently attached to
sponding: parts, throughoutv the several views;
Eigure 1*. is a‘: fragmentary perspective showing‘
a‘ d-ns’osealv embodying the; invention in open-i
ativegrelation; with‘ the outer; abutting diaphragm:
plates: of? a‘ pair- of;‘ adjoining vestibule variety:
the inner marginsof. the outerdiaphragm plates
railroadcars; I
designedidustl-seals, andis characterized by the.
fact that it consists of apair of, complemental,
normally side. by side; strip-sections,‘ the inner.
of; the, two. cars: and; the , outer margins of‘ which‘
Figure 2 is
fragmentary perspective of one
areprovid'ed; with quickly detachablev connecting
of, the: cars, aitcrvit' has - been uncoupled from the
means.v By providing adust seal of. the last men-r
“ other-carandv its strip-section has been'detached'
ti'onedj character the. two sectionsroi the dust seal
or; disconnected from the complemental strip‘ -
may. be, readily. detached, or. disconnected when; it.
isnecessary touncouple the two cars. and it" is.
possiblein connection; with substitution: of‘v at» dif-ev
sectionnnzthefouterz diaphragm plate of the other;
ferent' car for one of the two cars readily to con- i
the dust seal illustrating in detail the manner in
railrioadicari;
v
.
'
Figure 3, is; an enlargedi horizontal, section, of
2,408,473
0
6
which the inner margins of the complemental
strip-sections are permanently attached to the
inner margins of the abutting diaphragm plates
and the outer margins of the strip-sections are
detachably connected together when the strip is
in its operative position;
Figure ll is a vertical section on the line 4-4
of Figure 3;
4
connected or attached to the top and side mem
bers of the outer diaphragm plates.
As its parts or components the dust seal com
prises a pair of co-mplemental strip-sections l8
and these are associated with the outer dia
phragm plates 03, respectively, and are positioned
in opposed or side by side relation when the two
cars C and C1 are coupled together. Preferably
the strip-sections it) are formed of heavy canvas
10 or other flexible material which is chemically
the line 5-5 of Figure 4;
treated so that it is impervious to dust and ?uid.
Figure 6 is a fragmentary detail of the slide
As shown in the drawings, the two strip-sections
fastener arrangement constituting the quickly
are of inverted U-shaped contour and extend
detachable connecting means between the outer
around and-lie within the inwardly extending
margins of the two complemental strip-sections;
?anges e11 on the top and side members of the
and
‘
Figure 5 is an enlarged horizontal section on
Figure '7 is a section taken on the line 'l—-'! of
Figure 6 and showing in detail the construction
and arrangement of the outer and inner ?aps
which are applied to the outer margins of the
strip-sections and serve to cover the slide fasten
er arrangement and protect it against dust, rain
outer diaphragm plates 03. The ends of the strip
_ sections it are shown in the drawings as termi
nating adjacent the lower ends of the side mem
bers c8 of the diaphragm plates. If desired, how
ever, the ends of the strip-sections may be ex
tended so that they may be arranged in lapped
relation on the buffer plates 02 of the two rail
road cars. The strip-sections arefolded longi
The dust seal which is shown in the drawings
tudinally to form full length pleats ll. The lat
constitutes the preferred form or embodiment of
the invention and is illustrated in connection 25 ter permit the strip-sections to stretch or expand
laterally when the two cars C and C1 travel
with a pair of adjoining vestibule variety rail
arounda curve. The corners of the pleats are
road cars C and C1. As hereinafter described
and snow.
- more in detail the seal serves as a medium or in
strumentality for preventing dust and other mat
preferably provided with longitudinalrstitching
l2 in order that the pleats tend to remain in
ter on the outside of the cars from in?ltrating 30 their folded or pleated condition. The inner
margins of the strip-sections ID are provided with
the joint between the cars and entering the car
vestibules.
The two cars are of standard or con
ventional design and construction and comprise
double folds and have longitudinal stitching l3
in order to form three thickness hems Ill. The
latter fit flatly against the inner faces of the
bodies 0 having at the ends thereof wheel carry
ing trucks (not shown). The ends of the cars 35 ?anges c11 on the top and side members of the
outer diaphragm plates 03 and are clamped per
that are in abutting or adjoining relation ems
manently in place by way of metallic clamping
body ?xed or rigid frame structures 01 and buffer
plates 02 and these, together with outer dia
phragm plates c3 and accordion type diaphragms .
strips l5 and bolts I6. The clamping strips I5
are disposed within, and shaped conformably to,
c4, de?ne communicating vestibules 05 whereby 40 the flanges 011. The shanks of the bolts 18 ex
tend through aligned holes in the clamping strips
passengers and railroad personnel may walk from
it, the hems I 4 and the ?anges 011, as shown in
one car to the other. The outer diaphragm plates
Figure 5. The hems M are interposed between
03 abut against one another when the cars C and
C1 are coupled together and consists of horizon 45 the ?anges and the clamping strips and are se
curely clamped in place when the nuts on the
tally extending bottom members 06, horizontally
shanks of the bolts are fully tightened. It is con
extending top members 07 and vertically extend
ing side members 08. They are supported by up
per rod and spring assemblies 09 and lower rod
and spring assemblies 010 so that they are inward- ,
ly yieldable in the direction of the‘ car bodies 0.
The upper assemblies 09 extend between the up
per portions of the frame structures 01 and the
top members cl of the outer diaphragm plates c3
and the lower assemblies extend between the low
er portions of the frame structures and the bot
tom members 06 of the diaphragm 4 plates, as
templated that the inner margins of the strip
, sections ID will remain in permanently connect
ed relation with the ?anges 011. The strip-sec
tions l0 are of such width that the dust seal as a
whole is capable of expanding to the vnecessary
extent to take care of sharp turns Without plac
ing the canvas of which the strip-sections are
formed under tension.
The outer margins of the strip-sections ID are
longitudinally doubled back and stitched to form
hems l‘! and are provided with quickly detachable
connecting means whereby they may be con
nected together when the two cars C and C1 are
shown in Figure 4. The vertically extending side
members diet the diaphragm plates are disposed
in laterally spaced relation and have their upper 60 coupled together. The quickly detachable con
ends connected to the ends of the top members
necting means is in the form of a slide type or
07 and the lower ends thereof connected to the
variety fastener arrangement (zipper) and com
ends of the bottom members 06, as shown in Fig
prises a longitudinal series of equidistantly spaced
ure 2. The inner margins of the top members 0"
fastening members [8 on one of the hems H, a
and the side members 08 of the outer diaphragm
longitudinal series of laterally'spaced coacting
plates 03 are provided with integral ?anges e11
fastening members H) on the other hem I1, and
and these extend inwards at right angles to the
a pair of slide members 28. The fastening mem
plates and are of inverted U-shaped contour.
bers of each series are of conventional design or
The diaphragms 04, like the flanges 011, are of
construction and have bifurcated inner ends in
inverted U-shaped contour. They are V-shaped
straddled relation withthe hem that is associ
ated therewith. The outer ends of the fastening
in cross section, as shown in Figures 3 and ll, and
are disposed directly inwards of the diaphragm
members‘ have laterally extending lugs on one
side thereof and lug receiving sockets or cavities
plates 03. The inner margins of the diaphragms
on their other side. The slide members 20 are
are suitably connected to the frame structures 01
and the outer margins of the diaphragms are 75 normally in associated relation with the two series
‘2,408,473
"5
of fasteningmembersrand are adapted when slid
in one direction to. bring the 'outer ends of the
fastening "members of one series into inter?tting
or ‘interlocked relation with the outer ends of the
. fastening members of the other series, and when
slid in ‘the opposite direction to separate the two
series of fastening members. One of the'slide
6
'The ‘herein described dust seal effectively and
e?iciently ful?lls its intended purpose and is
characterized by the fact that the two strip
sections thereof may be quickly'and readily dis
connected when it is desired, to uncouple the two
cars with which ‘the dust seal is associated.
It
is also characterized by the fact that it possesses
long life and is capable of being manufactured.
members is adapted to slide back and forthbe
or produced at a low cost. The slide fastener
tween the central'portion and one end of the
two series of fastening 'members'and the other 10 arrangement for connecting the two complemen
tal strip-sections I0 is of the interchangeable
slide member is adapted to slide back and forth
variety and hence when one car is disconnected
between the central portion and the other end of
.or uncoupled from the other car another car may
the two series of fastening members. The slide
be coupled to the other car and a dust seal ef
fastener arrangement is such that when the two
fected, provided that the said another car is
slide, members are slid outwards and then down
provided with a strip-section which is‘a com
wards for the purpose vof separating the two
plement of the strip~section it on the said other
series of fastening members the end portions of
car.
the strip-sections it may be detached from one
The invention is not to be understood as re
another. When the slide members are disposed
at the central portions of the two series of fas 20 stricted to the details set forth since these may
be modi?ed within the scope of the appended
tening members the slide fastener arrangement
"claims without departing from the spirit and
is closed with the result that the outer margins of
scopeof the invention.
the two strip-sections iii are in connected rela
tion throughout the length thereof and the dust
~~ Having thus described the invention what I
seal as a whole seals the two outer diaphragm 25 claim as new and desire to secure by Letters
Patent is:
I
plates 03 so that dust ‘and other matter on the
- , '1. A seal adapted to prevent in?ltration of dust
outside of the two cars are prevented from pass
and other matter between the abutting frame
ing into the vestibules 02. In order to protect
like outer diaphragm plates of a pair of coupled
the slide fastener arrangement constituting the
quickly detachable connecting means between 30 together vestibule variety railroad cars and com
prising a pair of complemental separately formed
the outer margins of the strip-sections l0 against
opposed strip-sections formed of ?exible, dust
dust, rain and snow ‘the outer margins of the
strip-sections are provided with outer ?aps 2i
and ?uid impervious material, extending around
the innermarginal portions of the top and side
and inner flaps 22. The outer ?aps 2| are in the
form of longitudinally folded or doubled over
parts of the ‘diaphragm plates, having certain of
strips of chemically ‘treated canvas and are con
the side margins thereof connected to said‘ mar
nected to the outer margins of the strip-sections
ginal portions, respectively, and provided on the
by stitching 23. They extend lengthwise of ‘the
other side margins thereof with quickly and read_
outer margins of the strip-sections l0 and are
ily releasable means for connecting them to
arranged so that their outer margins abut against 40 gether.
each other when the slide fastener arrangement
2. A seal adapted to prevent in?ltration of dust
is in closed position wherein it serves to connect
and other matter between the abutting frame
the two strip sections. The inner flaps 22, like
like outer diaphragm plates of a pair of coupled
the outer ?aps 2|, are in the form of longitudié
together vestibule variety railroad cars and com
nally folded or doubled over strips of chemically 45 prising a pair of complemental separately formed
strip-sections of inverted U-shaped contour,
treated canvas and extend lengthwise of the outer
margins of the strip-sections l0. They are held
formed of flexible, dust and ?uid impervious ma
in place by the stitching 23 and are arranged so
terial, positioned in opposed relation, having cer
that the outer margins thereof abut against one
tain of the side margins thereof connected, re
another when the two strip-sections are con 50 spectively, to the top and side parts of the dia
nected together as shown in Figure '7. When the
phragm plates, and provided on the other side
margins thereof with quickly and readily releas-'
two strip-sections l0 are connected together by
able means for, connecting them together.
the slide fastener arrangement the outer and in
3. A seal adapted to prevent in?ltration of dust
ner flaps 2i and 22 cover the coacting fastening
members It and IQ of the slide fastener arrange 55 and other matter between the abutting frame
like outer diaphragm plates of a pair of coupled
ment and thus protect them against dust, rain
together vestibule variety railroad cars and com
and snow accumulating thereon.
prising a pair of complemental separately formed’
When the two cars C and C1 are coupled to
gether and the two longitudinally pleated strip
strip-sections of inverted
U-shaped contour,
sections I0 have the outer margins thereof in 60 formed of ?exible, dust and fluid impervious ma
terial, positioned in opposed relation, having cer
connected relation the dust seal as a whole seals
the two outer diaphragm plates 03 against in?ow
tain of the side margins thereof connected, re
spectively, to the inner marginal portions of the
into the vestibules of dust and other matter, as
top and side parts of the diaphragm plates, and
heretofore pointed out. When it is desired to
uncouple the two cars for service, inspection, or 65 provided on the other side margins thereof withv
quickly and readily releasable means for con
other purposes, the outer margins of the two
necting them together in a dust-tight manner.
strip-sections i0 are disconnected by sliding the
4. A seal adapted to prevent in?ltration of dust
slide members 25 outwards and then downwards
and other matter between the abutting frame
to the ends of thetwo series of fastening mem
bers on the hems ll. After so sliding the slide 70 like outer diaphragm plates of a pair of coupled-,
together vestibule variety railroad cars and com
members the ends of the outer margins of the
prising a pair of complemental separately formed
two strip-sections are separated. At the con
longitudinally pleated strip-sections of inverted
clusion of this operation the two strip sections
U-shaped contour, formed of ?exible dust and
are completely disconnected and it is possible to
75 fluid impervious ‘material, positioned in opposed
uncouple and then separate the two cars.
2,408,473
7
relation, having certain of the side margins
thereof connected to the top and side parts of
the diaphragm plates, and provided on the other
side margins thereof with quickly and readily re
leasable means for connecting them together.
5. A seal adapted to prevent in?ltration of dust
and other matter between the abutting frame
like outer diaphragm plates of a pair of coupled
together vestibule variety railroad cars and com
7. A seal adapted to prevent in?ltration of dust
and other matter between the abutting frame
like outer diaphragm plates of a pair of coupled
together vestibule variety railroad cars and com
prising a pair of complemental separately‘formed
strip-sections of inverted U-shaped contour,
formed of ?exible, dust and ?uid impervious ma
terial, positioned in opposed relation, having cer
tain of the side margins thereof connected, re
prising a pair of complemental separately formed 10 spectively, to the top and side parts of the dia
opposed longitudinally pleated strip-sections of
phragm plates, and provided on the other side
margins thereof with quickly and readily releas
inverted U-shaped contour, formed of ?exible,
able means for connecting them together, and
dust and ?uid impervious material, having cer
also with inner and outer longitudinally extend
tain of the side margins thereof connected, re
spectively, to the inner marginal portions of the 15 ing substantially full length ?aps positioned nor
top and side parts of the diaphragm plates, and
mally in abutment with one another and over
provided on the other side margins thereof with
lapped relation with the connecting means.
quickly and readily releasable means for con
8. A seal adapted to prevent in?ltration of dust
necting them together in a dust-tight manner.
and other matter between the abutting frame
6. A seal adapted to prevent in?ltration of dust
like outer diaphragm plates of a pair of coupled
and other matter between the abutting frame
together vestibule variety railroad cars and com
like outer diaphragm plates of a pair of coupled
prising a pair of complemental separately formed
together vestibule variety railroad cars and com
opposed longitudinally pleated strip-sections of
prising a pair of complemental separately formed
inverted U-shaped contour, formed of ?exible,
opposed strip-sections formed of ?exible, dust 25 dust and ?uid impervious material, having cer
and ?uid impervious material, extending around
tain of the side margins thereof connected, re
the inner marginal portions of the top and side
spectively, to the inner marginal portions of the
parts of the diaphragm plates, having certain of
top and side parts of the diaphragm plates, and
the side margins thereof connected to said mar
provided on the other side margins thereof with
quickly and readily releasable means for con
necting them together in a dust-tight manner,
and also with longitudinally extending substan
ginal portions, respectively, and provided on the
other side margins thereof with quickly and read—
ily releasable means for connecting them to
gether, and also with longitudinal substantially
full length side ?aps positioned in abutment with
one another and in lapped relation with the con
necting means.
>
tially full length side ?aps positioned normally in
abutment with one another and in lapped rela
35 tion with the connecting means.
CLARENCE P. NELSON,
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