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Патент USA US2120707

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Juné 14, 1938.
G. MADLAND
2,120,707
CAR DOOR
Filed Sept. 1, 1936
5 Sheeté-Sheet 1
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June 14, 1938.
2,120,707
G. MADLAND
CAR DOOR
Filed Sept. _l, 1956
5 Sheets-Sheet 2
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GABE/EL. MA OLAND
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' June 14, 1938.
2,120,707
G. MADLAND
CAR DOOR
Filed Sept. 1, 1956
5 Sheets-Sheet 3
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GABR/El. MADLAND
ATTY
June 14, 1938.
G. MADLAND
- 2,120,707.
CAR DOOR
Filed Sept. 1, 1936
5 Sheets-Sheet 4
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June 14, 1938.
2,120,707
G. MADLAND
‘ CAR DOOR
Filed Sept. '1, 1956
5 Sheets-Sheet 5
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GAB/{MEL MADLAND
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2,120,707
Patented June 14, 1938
‘UNITED srgras
PATENT OFFICE
2,120,707
GAR DOOR
Gabriel Madland, Chicago, 111., assignor to The
Youngstown Steel Door Company, Cleveland,
Ohio, a corporation of Ohio
Application September 1, 1936, Serial No. 98,993
19 Claims.
This invention relates to car doors and is con
cerned primarily with improvements in sliding
car doors of the lift type and in the means
for stopping and automatically locking said doors
.5 in closed position.
Railway house cars utilized for the transporta
tion of automobiles, furniture and other bulky
lading are commonly provided with large side
door openings requiring two oppositely sliding
10 doors for closing each opening. One of these
doors is called the main door and the other the
auxiliary door. The auxiliary door is reinforced
by means of a post fastened upon the inside of
the front margin of the door.
Castings are se
cured to the upper and lower ends of the posts
which engage stops secured to the side plates and
side sills or threshold plates of the car to stop
closing movement of the auxiliary doors. When
lift ?xtures for sliding car doors were introduced
120 the post castings and stops were designed to uti
lize the lowering movement of the doors to obtain
locking thereof in closed position and the lifting
or elevating of the doors to obtain release thereof.
The lower stop and locking member was se»
cured either directly to the side sill or to the me
tallic threshold plate which in turn was bolted
through the floor to the side sill. This member
projected upwardly above the floor of the car for
cooperation with the lower post casting. There
30 was thus presented a construction from which
arose certain difficulties that the instant improve
ments remedy.
_
Where the lower stop and locking members
which were customarily castings, which were
secured directly to the side sill, they necessitated
the gaining out of the floor boards. If a single
threshold plate was used it had to be notched to
permit this securement. To avoid such notching
a threshold plate made in two pieces was some
40 times used. Manifestly additional operations
either upon the car or the threshold plate were
required in consequence of which the cost of the
car was increased.
Securement of the lower stop and locking mem
ber to the threshold plate also presented another
objection. The threshold plate is placed upon
the wooden floor of the car. This floor warps
and shrinks, hence does not provide a solid back
ing for the threshold plate.
When, therefore,
the lower stop and locking member is struck in
moving lading into or out of the car the threshold
plate is loosened and the eil‘lcacy of the stop and
locking member is destroyed.
Di?iculty was experienced in properly aligning
the upper and lower stop and locking members
55
(01. 20+22)
v
so that each stop would effectively cooperate with
the door posts to limit closing movement of the
door and to lock the post.
Standardization of design of the lower stop and
locking member was impossible where such mem
bars were intended for direct securement to the
side sill. Side sills of railway cars vary in con
r 5
struction. Accordingly these members had to
be varied vin design to meet the different construc
:10
tions encountered in side sills.
The most serious di?iculty presented by the
lower stop and locking member is to be found in
its projection above the car ?oor. This fact made
loading and unloading of merchandise trouble~
some. In the case of automobiles movement 'mto .15
and out of the cars is obtained by means of
dolleys which frequently struck the projecting
lower stop and locking members and swerved so
abruptly as to cause the automobile to strike
against and be damaged by the car.
It will be readily seen that the use of the herein
above described lower stop and locking mem
bers was accompanied by various di?iculties
which required solution. This solution is sup
plied by the improvement involved in the herein 12,5
after described invention.
The main object of this invention is to over
come in a simple and expeditious manner the
di?iculties above enumerated by constructionv
which shall additionally make possible a mate 30
rial savings in weight.
A further object is to provide a lower stop and
locking member disposed outwardly of the door
for cooperation therewith to stop‘ closing move
ment and automatically lock said door when the
latter is lowered in closed position.
A further object is to provide a member adapted
to be secured to a door supporting track and have
a locking abutment cooperable with the door to
automatically lock said door in closed position.
40
A further object is to provide a member having
a locking abutment secured to the door track, and
to the side sill if desired, which shall permit use
of a track formed in sections certain of which
shall be connected and supported by means of 45
said member.
A further object is to provide a member
adapted for securement to a door track, and if
desired to the side sill, said member carrying a
locking abutment cooperable with a detent se
cured to a sliding lift door to automatically lock
said door against opening movement when in
closed and lowered position and automatically re
leasable from said door detent upon elevating
movement of said door.
'
55
2,120,707
A further object is to provide a sliding lift door
having a combined rigid corner gusset and lock
ing detent member.
a
A further object is to provide sliding lift doors
having combined rigid corner gusset and locking
detent members associated with said door so as
rality of spaced horizontal corrugations 2| which
merge at their ends into vertical corrugations
to utilize parts thereof as reinforcement for said
members.
A further object is to provide a member adapted
ginal reinforcing members are secured to the me
tallic panel. As appears in Figure 2 of the draw
to be secured to a door track and having a look
ing abutment cooperable with the door to auto
matically lock said door in closed position and to
resist outward pressure of lading against the
door.
Additional objects of the invention will become
15
clear as the description thereof proceeds.
In the drawings forming part of this speci?ca
tion:
‘
Figure 1 is a partial elevation of a railway car
20 embodying the instant invention.
Figure 2 is a horizontal section taken on line
2-2 of Figure 1.
of Figure 1.
Figure 4 is a vertical section taken on line 4—4
of Figure 1.
22 and 23 formed in the metallic panel.
Mar
ings the forward vertical marginal reinforcing 10
member 24 is in the form of a channel and is
secured to the marginal portion of the door as
by means of rivets 25 passing through the web
of the channel and the door. The legs of the
channel 25 are of unequal length and extend 15
outwardly relative to the door. The rear ver
tical marginal portion of the door is reinforced
by means of a sealing strip 26 and a buffer angle
21 secured to said marginal portion of the door
as by means of rivets 28.
The upper and lower 20
horizontal marginal portions of the main door
are also reinforced in the same manner as these
Figure 3 is a vertical section taken on line 3—3
25
IS. The door is is commonly called the aux
iliary door and the door IS the main door of the
double door construction. The main door l9
comprises a metallic panel 20 formed with a plu
‘
Figure 5 is an enlarged elevation of the lower
right hand corner of the auxiliary door showing
a stop and locking member for the door and the
securement of said member to the contiguous
track sections.
Figure 6 is a vertical section taken on line
6-6 of Figure 7.
Figure '7 is an enlarged detail similar to Fig
ure 5 showing a modi?ed form of the invention.
Figure 3 is an enlarged detail showing a fur
ther form of the invention.
Figure 9 is a vertical section taken on line
9—9 of Figure 8.
Figure 10 is a View similar to Figure 8 showing
the forward portion of the main door spaced from
the auxiliary door to illustrate the vertical re
inforcing member of the main door.
Figure 11 is a vertical section taken on line
45 ll-Il of Figure 10.
Figure 12 is a horizontal section taken on line
l2—l2 of Figure 10.
Figure 13 is an enlarged elevational detail of
the right hand corner of the auxiliary door,
stop and locking member and portions of ad
jacent spaced sections of the door track.
Figure 14 is a vertical section taken on line
Ill-l4 of Figure 13.
Figure 15 is a horizontal section taken on line
I5—l5 of Figure 13.
Referring to the drawings and more partic
ularly to the embodiment of the invention illus
trated in Figures 1 to 5 inclusive, the numeral
ID designates generally a freight car of the house
60 car type. A door opening ll of extraordinary
width is provided in each side of the car. This
door opening is de?ned by means of the ?xed
door posts II and I2 which extend vertically be
tween and are secured to the side plate l3 and
the side sill it of the car. These two latter
members de?ne the upper and lower boundries
of the door opening. The car H) is provided
with a floor l5 supported upon the side sill l4
and fastened thereto as by means of bolts 16. A
70 metallic threshold plate I? is fastened upon the
floor by means of the bolts !6 and extends over
the outer edge of the floor as indicated in Fig;
ure 4 of the drawings.
The door opening ll is adapted to be con
trolled by two oppositely sliding doors l8 and
marginal portions of the auxiliary door are rein
forced. This reinforcement will be later de—
scribed.
25
The auxiliary door it also comprises a metallic
panel 29 formed with a, plurality of spaced hori
zontal corrugations 30 which merge at their ends
into vertical corrugations 3! and 32 formed ad~
jacent the vertical edges of the panel. The for— 30
ward vertical margin of the auxiliary door is re
inforced by means of a substantially Z shaped
member 33 and a post 34.
These members are
secured to the forward marginal portion of the
door as by means of rivets 35. It will be clear 35
from Figure 2 of the drawings that the metallic
panel lies outwardly of the Z shaped reinforcing
member while the post 34 which is substantially
Z shaped in section extends inwardly from the
member 33.
40
The rear marginal portion of the auxiliary door
is reinforced as hereinabove indicated for the
rear marginal portion of the main door. Thus
the rear marginal portion of the auxiliary door
has secured thereto a sealing strip 26 and a 45
buffer angle 27 these being fastened to the rear
margin of the door as by means of rivets 28.
The upper horizontal margin of the auxiliary
door is reinforced by means of an angular mem
ber 35 having a horizontal ?ange 36 extending 50
inwardly in overlapping relationship with a J
shaped header 3?. The upper margin of the
door is disposed behind a vertical depending
?ange 38 of a door retaining member 39 fas—
tened as by means of rivets M3 to the depending 55
leg 45 of the side plate l3.
The lower horizontal margin of the auxiliary
door is reinforced by an angular member 42 se
cured to the lower margin of the door as by
means of rivets li3 extending through a verti 60
cally disposed leg of the reinforcing member 42.
The leg 44 of said reinforcing member is dis
posed horizontally for a purpose which will here
inafter appear.
When in closed position the main and auxil 65
iary doors are adapted to be locked by means
of a locking mechanism indicated generally by
the reference numeral 45. An opening and clos
ing mechanism for the main and auxiliary doors
is indicated as a whole by the reference charac 70
ter 46.
In their closed position the main and aux
iliary doors are rendered weatherproof along the
rear margins by the cooperation between the door
sealing strips 26 and spark and weather strips 75
3
2,120,707
41 secured to the ?xed door posts H and I2.
The association between the angular reinforcing
58 and 59 are spaced apart substantiallyv cen
trally of the door opening H. The adjacent por
member 35 and the door header 31 provides an
effective weatherproo?ng condition at the top of
the door.
The main and auxiliary doors are of the lift
type. In their normal or lowered position these
doors are adapted to be frictionally supported
tions of the track sections 58 and 59 are con
nected together and supported by means of a
bracket member ?ll shown in the form of a cast
upon a door track 48.
The frictional engage
10 ment between the door and the track is obtained
by means of the horizontal leg 44 of the door
reinforcing member 42 and the horizontal leg 49
of the door track. This engagement moreover
affords a weather tight condition at the lower
15 margin of the door.
In order to provide for ease of movement of
the doors upon the track a mechanism commonly
known as “lift mechanism” is utilized. This
mechanism per se does not form any part of the
20 instant invention except insofar as it imparts a
vertical movement to the door utilized in the in
stant
invention.
Brie?y,
therefore,
the
lift
mechanism is the same for each door and may
be described as comprising a pair of spaced roll
25 ers 5t! and El, each housed in its respective
bracket 52 and 53. Roller housings 54 and 55
receive the rollers, these housings being addi
tionally pivoted eccentrically to the door. Bar
$6 disposed in the lowermost of the horizontal
30 corrugations of each door connects the roller
housings for simultaneous operations and move»
ment is imparted to the roller housing by means
of an operating lever 51 preferably mounted upon
one of the roller housings.
35
It will be apparent from the foregoing brief
description that if the operating lever 51 is pulled
downwardly the roller housings 54 and 55 will
ing. The bracket member comprises a central
portion 6i reinforced by means of ribs 62 and
63. Extending in opposite directions from the
central portion SI of the bracket 60 are hori
zontal and vertical ?anges Eli and 65 disposed in 10
engagement with the horizontal ?ange t0 and
the vertical ?ange {it of the track ‘38. The con
necting and supporting bracket 60 is riveted to
the side sill as by means of rivet 61 and to the
track sections 58 and 59 as by means of rivets 15
83B and 69. The central portion 8| of the bracket
iii} extends upwardly above the track sections
68 and 69 but terminates below the door open
ing If. The upwardly extending portion ‘Ill of
the bracket 60 provides abutment ‘ll adapted as 20
hereinafter explained to limit closing movement
of the door and to lock said door against open~
ing movement when in lowered position.
A detent is provided at the lower forward cor~
ner of the auxiliary door for cooperation with 25
the locking abutment ll provided on the casting
G0 in order to lock the door in its closed and
lowered position.
This detent is preferably pro
vided as a part of reinforcing gusset member
secured to said corner of the auxiliary door. The 30
gusset member is indicated by the reference nu
meral “l2 and is riveted to the lower corner of
the door by the vertical row of rivets ‘l3 and by
the horizontal row of rivets ‘M. The vertical ribs
l5 and f6 and horizontal ribs 11 and ‘F8 are uti 35
lized to reinforce the gusset member. A look
ing detent ‘I9 is formed on the gusset member
72, this detent being reinforced by means of
the rib 8!]. The gusset member 12 is formed ad
rotate about the rollers as fulcrums thereupon
effecting an elevating movement of the door and
40 transferring the weight thereof from the track ' ditionally with an abutment member 81 for a
to the rollers 50 and 5!. Thereupon the doors purpose which will hereinafter appear. It will
may readily be moved upon the rollers to any be observed moreover that the gusset member ‘i2
desired position. When the operating lever 51 is riveted to the lower portion of the movable
reinforcing post 31%, whereby said post is utilized
is released the door will by the action of grav
ity lower until frictional engagement between the to strengthen the lower corner of the auxiliary 45
angular reinforcing member 42 and the track
48 is again established. It is to be understood
that the instant invention may utilize any de
sired form of lift mechanism in addition to that
50 above brie?y described.
In the operation of the main and auxiliary
doors it is the practice to ?rst close the auxil
iary door and subsequently close the main door.
Prior to the instant invention both closing and
locking of the main door was obtained by means
of castings secured to the upper and lower por
tions of the movable reinforcing post 341 fas
tened to the forward marginal portion of the
auxiliary door. These post castings cooperated
60 with upper and lower stops fastened respec
tively to the side plate and to the side sill or
threshold plate of the car. The instant inven
tion is concerned primarily with the elimination
of the lower post stop which it will be evident
65 from a consideration of Figure 4 of the draw
ings must necessarily extend upwardly above
the ?oor l5 of the car in order to cooperate with
the lower portion of the movable post 31-! for the
purpose hereinbefore set forth. The eliminaiton
70 of the post stop casting and the attainment of
the several objects set out is accomplished by
means of the embodiments of the invention illus
trated. With reference to Figure 1 to 5 inclu
sive, it will be seen that the track 48 is prefer
75 ably formed in sections and that the sections
door against outward thrusts imposed thereon by
shifting of the lading within the car.
The relationship between the gusset member
secured to the lower forward corner of the aux
iliary door and the track supporting and con
50
necting casting ‘68 is clearly illustrated in Fig
ure 5 of the drawings.
In this view the auxi1~
iary door is illustrated in its lowered position in
which it is frictionally engaged with the track
section 58. In this position the locking detent 55
I9 lies to the right of the abutment ll so that
opening movement of the door which would be
toward the left as viewed in Figure 5 is prevent
ed. When it is desired to open the auxiliary
door the operating lever El will be moved down 60
wardly whereupon an elevating movement of the
door will occur and the detent member 19 will
move upwardly to the door to such an extent
that it will clear the locking abutment ‘H on
the casting 6i). The auxiliary door will then be 65
disposed upon the supporting rollers and can
easily be moved to open position. When it is
desired to return the auxiliary door to its closed
position it is again elevated and moved along the
track section 58. As it reaches its closed posi~ 70
tion the abutment 8i provided on the gusset
member ‘#2 will strike the abutment ‘ill on the
bracket 58 and thereby limit closing movement of
the door. Release at this time of the operating
lever 5'! will cause the door to gravitate down 75
4
2,120,707
wardly whereupon the detent 19 on the gusset
member 12 will again assume the position illus
trated in Figure 5 of the drawings. Accidental
opening movement of the auxiliary door will then
It will be clear from the foregoing detailed
description that automatic stopping and locking
the consideration of the previous embodiment of
the invention. The stopping feature of the pre
vious embodiment is not shown on the considered
embodiment of the invention, altho it is to be
understood that if desired such stopping fea
ture may as well be utilized. The top of the
locking abutment 98 is curved upwardly as in
be prevented.
of the auxiliary door is effected by means of the
dicated at 96 and is adapted to cooperate with the
described embodiment of the invention, while at
10 the same time the former projection of a stop
lower straight edge of the locking detent 95 to
casting above the ?oor has been eliminated.
Moreover it will be apparent that the support
ing and connecting bracket 60 of the adjacent
portions of the track may be standardized, that
engagement between said parts in the event
that the door is not initially elevated sufficiently
for the locking detent to clear the locking abut
ment. The gusset member 94 is secured to the
15 a threshold plate formed of a single piece of
said metal may be utilized and that the coping
and gaining operations heretofore required for
the threshold plate and ?ow are eliminated.
The bottom of the locking detent ‘I9 is curved
20 upwardly as indicated at 82, while the top of
the locking abutment 'II is straight across the
top. The curving of the bottom of the locking
detent insures automatic locking engagement of
the auxiliary door even though said door is not
25 completely elevated so as to clear the locking
abutment ‘II as the door moves to closed posi
tion.
In the latter event the curved bottom of
the locking detent will strike the locking abut
ment ‘II and automatically elevate the door
30 sufficiently so that the detent will slide over the
abutment.
With reference to Figure 2 of the drawings it
will be seen that the inner face of the locking
abutment 'II is convex as indicated at 83, where~
35 by said abutment serves to guide the door in its
40
45
50
55
?nal closing movement. Moreover the associa-'
tion between the gusset member ‘I2 and the look
ing abutment ‘II is' such that said abutment is
effective to resist outward thrust upon the door
occasioned by shifting lading within the car.
Since the instant invention is concerned with
the looking or the stopping and locking of the
auxiliary door with respect to the lower portion
of said door the presently utilized stopping and
locking arrangement is shown for the upper por
tion of the door. This'arrangement comprises
a casting 84 secured to the upper portion of the
movable post 34 adapted to cooperate with a stop
casting 85 fastened to the depending leg M of the
side plate I3. This arrangement is well known
in the art and further detailed description is not
believed necessary.
Referring to Figures 6 and 7 of the drawings,
a somewhat modi?ed form of the invention is
illustrated. The track sections 58 and 59 are
connected by means of a member 86 having a
central portion 8‘! reinforced by means of the ribs
88 and 89 and from which there projects up
wardly a locking abutment 90. The connecting
60 member 86 which is shown in the form of a cast
ing is provided with oppositely extending hori
zontal ?anges 9| and the vertical ?anges 92 which
are secured respectively to the horizontal and ver
tical legs of the track sections 58 and 59. It
05 will be observed that the connecting bracket 86
is not fastened directly to the side sill I4 as in
the case of the previous embodiment of the in
vention. In order to secure the adjacent portions
of track sections 58 and 59 to the side sill any de
70 sired track supporting brackets such as indcated
partially at 93 may be utilized.
A corner gusset member is shown at 94. This
member is provided with a locking detent 95
adapted to cooperate with the locking abutment
75 90 on the connecting bracket 86 as indicated in
elevate the door and obtain automatic locking 10
reinforcing door post 34 as in the case of the 15
previous embodiment. It will be apparent from
a consideration of Figure 6 of the drawings that
the locking abutment terminates below the top
of the floor of the car.
In Figures 8 and 9 of the drawings a further 20
embodiment of the invention is illustrated.
This embodiment of the invention as well as the
modi?cation of the main and auxiliary doors
necessitated thereby is illustrated moreover in
Figures 10 to 12 inclusive of the drawings. Re .25
ferring to Figures 8 to 12 inclusive therefore, a
gusset member 97 is illustrated secured to the
lower corner of the auxiliary door and to the
reinforcing door post 34.
With reference to the horizontal sectional view 30
shown in Figure 12 of the drawings, it will be
clear that a portion of the gusset member 97 as
indicated at 98 extends inwardly below the Z
shaped reinforcing member 33 which is there
fore coped as indicated at 99 to permit this in
ward extension of the gusset member. The mem
ber is provded with a locking detent I80 adapted
to cooperate with a locking abutment IIlI for the
purpose of preventing accidental opening move
ment of the auxiliary door when the latter is in 40
its closed and lowered position. The locking
abutment IBI projects upwardly above the track
sections 58 and 59 but terminates below the door
opening II. Said locking abutment Illl is formed
as part of the central portion I82 of a track sup
porting
and
connecting
bracket
I83.
Said
bracket is secured directly to the side sill I4 as by
means of rivets I84 as clearly illustrated in Fig—
ure 9 of the drawings. oppositely extending
horizontal ?anges I05 are provided on the cen— 50
tral portion I82 of the bracket and the track
sections 58 and 59 are secured to these horizontal
?anges as by means of rivets I86. Vertical
?anges I0‘! abut against the vertical ?ange 66 at
each of the track sections and may be secured to 55
said ?ange if desired. As best illustrated in Fig
ure 9 of the drawings it will be seen that the
locking abutment IIlI lies within the outer plane
of the track sections 58 and 59 and that the door
gusset member as well as the remaining parts 60
of the track supporting bracket lie within this
plane.
There are no projections consequently
extending outwardly beyond the track sections.
In order to obtain the above described rela
tionship between the track supporting bracket 65
and the outer plane of the track, the horizontal
flange 44 of the lower angular door reinforcing
member is coped as indicated at I08.
By reason of the extension of the gusset mem
her for the auxiliary door inwardly below the re 70
inforcing 2 member 33 modi?cation of the for
ward vertical margin of the main door at the
corner thereof is necessitated. The outwardly
extending legs of the channel reinforcing mem~
ber 24 are cut away as indicated respectively 75
2,120,707
at I09 and III) in Figure 10 of the drawings. In
addition the horizontal flange 44 of the lower
angular door reinforcing member 42 of the main
door is coped as indicated at II I, whereby abut
ting engagement between the meeting edges of
the main and auxiliary doors in the closed po
sition thereof may be obtained.
The hereinabove detailed description of Fig
ures 8 and 9 is applicable to Figures 10 and 11
10 as well. The embodiment of the invention illus
trated in Figures 10 and 11 however does not
utilize a track supporting and connecting bracket
such as shown in Figures 8 and 9. A track con
necting bracket H2 is utilized which is provided
15 with a central portion II3 from which a locking
abutment II4 projects above the track sections
58 and 59. The connecting bracket I it’. is secured
to the adjacent portions of the track sections 58
and 59 by means of rivets II5 extending respec
20 tively through horizontal flanges H6 provided on
the track connecting bracket and horizontal
?anges 49 of the track sections. Additional at
tachment of the track connecting bracket to the
track sections is obtained by means of rivets II‘I
25 which secure together vertical ?anges H3 of the
bracket and the vertical ?anges B6 of the track
sections. Any desired track supporting brackets
such as IIS may be utilized to support the track
sections from the side sill Ill. The cooperation
30 and function of the locking detent and locking
abutment of the embodiments of the invention
illustrated in the Figures 8 to 12 inclusive, is the
same as described for the corresponding mem
bers of the first referred to embodiment of the in
vention.
The embodiment of the invention illustrated in
Figures 13 to 15 inclusive, comprises a track con
necting bracket EEEI having a central portion IZI
from which extend in opposite directions hori
40 zontal and vertical track attaching ?anges IN
and I22, respectively. A locking abutment I23
projects upwardly above the track sections 58
and 5S and terminates below the door opening.
It will be clear from a consideration of Figure 14
45 of the drawings that the track connecting bracket
I20 lies within the outer plane of the track sec
tions. Additional track supporting brackets such
as I24 may be utilized to support the spaced ends
of the track sections 53 and 53, the supporting
50 brackets being secured to the side sills by means
of rivets I25.
The lower forward corner of the auxiliary door
is provided with a gusset member I26 which is
secured to the door and to the reinforcing post
34 by the rivets I2'I. Additional rivets I28 and
I29 are utilized to fasten the gusset member to
the door. The gusset member I26 is provided
with a recess I30 thereby de?ning abutment I3I
and a detent I32. In the movement of the door
‘ to its closed position the abutment I3I will co
operate with the abutment on the track connect
ing bracket I23 to limit closing movement of
the door and in the lowering movement of the
door when in its closed position locking asso
ciation will be established between the detent
I32 and the locking abutment I23. When this
locking relationship is established it will be clear
that the locking abutment I23 will project up
Werdly into the recess I30 provided in the door
gusset member I26. The locking ‘abutment I23
will thus be completely enshrouded and protected
against blows. 'As in the previously described
embodiment of the invention the track connect
ing bracket cooperates with the door to resist
7-5 outward pressure upon the door.
5
‘ It will be observed that in each of the embodi
ments of invention the gusset member is dis
posed in abutting relationship with the web of
the 2 bar reinforcing member 33 which consti
tutes a stop for the main door as clearly illus
trated in Figure 2 of the drawings. By virtue
‘of the relationship above set forth between the
gusset member and the Z bar member 33, the
latter is made to serve as a backing member for
the gusset member .to aid in resisting blows upon
the detent of the gusset member occasioned by
the tendency of the door to move toward open
position.
It will be apparent that numerous changes and
modifications in the details of the invention will 15
be clear to those skilled in the art. It is intend
ed, therefore, that all such modi?cations and
changes be comprehended within this inven
tion, which is to be limited only by the scope of
'the claims appended hereto.
20
I claim:
1. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart substantially at the center of said opening, 25
a connecting member extending between and se
cured to said spaced track sections, said member
having an upwardly projecting stop and locking
abutment terminating below said door opening,
main and auxiliary lift doors adapted for slid 30
ing movement upon said track, said auxiliary
door having a gusset member secured to the
lower forward corner thereof, said gusset mem
her having an abutment adapted to engage'the
abutment on said track connecting member in 35
the elevated position of said door to limit clos
ing movement of said door and a locking detent
adapted to engage said abutment on said track
connecting member when said auxiliary door is
lowered to prevent opening movement of said 40
door.
2. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced.
apart substantially at the center of said opening, 45
a connecting member extending between and se
cured to said spaced track sections, said member
having an upwardly projecting stop and locking
abutment terminating below said door opening,
main and auxiliary lift doors adapted for sliding
movement upon said track, said auxiliary door
having a gusset member secured to the lower
forward corner thereof, said gusset member hav
ing an abutment adapted to engage the abut
ment on said track connecting member in the 55
elevated position of said door to limit closing
movement of said door and a locking detent
adapted to engage said abutment on said track
connecting member when said auxiliary door is
lowered to prevent opening movement of said 60
door and cooperating means secured to said
auxiliary door and said car adjacent the upper
margin of said door for stopping and automati
cally locking said door.
3. In a railway house car having a door open 65
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart substantially at the center of said opening,
a connecting member extending between and se
cured to said spaced track sections, said member 70
having an upwardly projecting stop and locking
abutment terminating below said door opening,
main and auxiliary lift doors adapted for slid
ing movement upon said track, said auxiliary
door lying inwardly of said stop and locking
6
2,120,707
abutment and having a gusset member secured
to the lower forward corner thereof, said gusset
member having an abutment adapted to engage
the abutment on said track connecting member
in the elevated position of said door to limit clos
ing movement of said door and a locking detent
adapted to engage said abutment on said track
connecting member when said auxiliary door is
lowered to prevent opening movement of said
10 door.
4. In a railway house car having a door open~
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart substantially at the center of said open
15 ing, a connecting member extending between and
secured to said spaced track sections, said mem~
ber having an upwardly projecting stop and look
ing abutment disposed between said spaced track
sections and terminating below said door open
20 ing, main and auxiliary lift doors adapted for
sliding movement upon said track, said auxiliary
door having a gusset member secured to the low
er forward corner thereof, said gusset member
having an abutment adapted to engage the abut
25 ment on said track connecting member in the
elevated position of said door to limit closing
movement of said door and a locking detent
adapted to engage said abutment on said track
connecting member when said auxiliary door is
lowered to prevent opening movement of said
door.
5. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
35 apart substantially at the center of said open
ing, a connecting member extending between and
secured to said spaced track sections and to
said car, said member having an upwardly pro
jecting stop and looking abutment terminating
40 below said door opening, main and auxiliary lift
doors adapted for sliding movement upon said
track, said auxiliary door having a gusset mem
ber secured to the lower forward corner thereof,
said gusset member having an abutment adapt
45 ed to engage the abutment on said track con
necting member in the elevated position of said
door to limit closing movement of said door and
a locking detent adapted to engage said abut
ment on said track connecting member when
50 said auxiliary door is lowered to prevent opening
movement of said door.
6. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
55 apart substantially at the center of said opening,
a connecting member extending between and se
cured to said spaced track sections, said con
apart substantially at the center of said opening,
a connecting member extending ‘between and se
cured to said spaced track sections, said member
having an upwardly projecting stop and locking
abutment terminating below said door opening,
main and auxiliary lift doors adapted for sliding
movement upon said track, said auxiliary door
having a gusset member secured to the lower for
ward corner thereof, said gusset member having
an abutment adapted to engage the abutment on 10
said track connecting member in the elevated
position of said door to limit closing movement
of said door and a locking detent adapted to en
gage said abutment on said track connecting
member when said auxiliary door is lowered to 15
prevent opening movement of said door, said stop
and locking abutment having an inner convex
face cooperable with said auxiliary door in the
closing movement of the latter to force said door
toward said car and insure locking relationship 20
between said stop and locking abutment and said
door detent.
'
8. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced 25
apart substantially at the center of said opening,
a connecting member extending between and
secured to said spaced track sections, said member
having an upwardly projecting stop and locking
abutment terminating below said door opening, 30
main and auxiliary lift doors adapted for sliding
movement upon said track, said auxiliary door
having a gusset member secured to the lower for
ward corner thereof, said gusset member having
an abutment adapted to engage the abutment on 35
said track connecting member in the elevated
position of said door to limit closing movement
of said door and a locking detent adapted to
engage said abutment on said track connecting
member when said auxiliary door is lowered to 40
prevent opening movement of said door, said stop
and locking abutment cooperating with said aux
iliary door in the closed position of the latter
to resist outward pressure on said door.
9. In a railway house car having a door open 45
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart substantially at the center of said opening,
a connecting member extending between and se
cured to said spaced track sections, said member 50
having an upwardly projecting stop and locking
abutment terminating below said door opening,
‘main and auxiliary lift doors adapted for sliding
movement upon said track, a reinforcing post
secured to the forward margin of said auxiliary 55
door, said auxiliary door having a gusset mem
ber secured to the lower forward corner thereof
necting member lying within the outer plane of 7 and to said reinforcing post, said gusset member
said track and having an upwardly projecting
60 stop and locking abutment terminating below
said door opening, main and auxiliary lift doors
adapted for sliding movement upon said track,
said auxiliary door having a gusset member se
cured to the lower forward corner thereof, said
65 gusset member having an abutment adapted to
engage the abutment on said track connecting
member in the elevated position of said door to
limit closing movement of said door and a locking
detent adapted to engage said abutment on said
70 track connecting member when said auxiliary
door is lowered to prevent opening movement of
said door.
7. In a railway house car having a door open
ing, a sectional track secured to said car below
75 said opening, sections of said track being spaced
having an abutment adapted to engage the abut
ment on said track connecting member in the 60
elevated position of said door to limit closing
movement of said door and a locking detent
adapted to engage said abutment on said track
connecting member when said auxiliary door is
lowered to prevent opening movement of said 65
door.
10. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart substantially at the center of said opening, 70
a connecting member extending between and se
cured to said spaced track sections, said mem
ber having an upwardly projecting locking abut
ment terminating below said door opening, main
and auxiliary lift doors adapted for sliding move 75
7
2,120,707
ment upon said track, said auxiliary door having
a gusset member secured to the lower forward
corner thereof, said gusset member having an
abutment adapted to engage the abutment on said
track connecting member in the elevated posi
tion of said door to limit closing movement of
said door and a locking detent adapted to engage
said abutment on said track connecting member
when said auxiliary door is lowered to prevent
opening movement of said door.
11. In a railway house car having a door open
ing, a track secured to said car below said open
ing, a member secured to said track having a
locking abutment disposed below said door open
'r ing, a lift door for said opening adapted for slid
ing movement upon said track, a locking detent
and an abutment provided on said door, said door
abutment being engageable with said abutment
on said member in the elevated position of said
door to limit closing movement‘ thereof and said
door detent being associated in locking relation
ship with said abutment on said member by low
ering movement of said door to prevent opening
movement thereof.
12. In a railway house car having a door open
ing, a sectional track secured to said car below
?anges abutting the corresponding ?anges of said
sections, a locking abutment on said member dis
posed between and extending upwardly above said
track sections, said abutment terminating below
said door opening, a lift door for said door open- '
ing adapted for sliding movement upon said track,
a locking detent provided on said door, said detent
being associated in locking relationship with said
abutment by lowering movement of said door for ’
the purpose set forth.
16. In a railway house car having a door open
ing, a track below said door opening, means se
cured‘ to said car and track for supporting said
track, said means including a locking abutment
terminating below said door opening, a lift door
for said opening adapted for sliding movement
upon said track, a locking detent on said door,
Said detent being associated in looking relation
ship with said abutment by lowering movement
said opening, sections of said track being spaced
apart, each spaced track section having a hori
zontal ?ange and an outer downwardly extend
ing vertical ?ange, a member extending between
and secured to said spaced track sections and
a railway house car for horizontal and vertical
movements relative to said car, said door com- I
prising a metallic panel and a metallic member
having horizontal and vertical ?anges abutting
secured to and along the front marginal portion
the corresponding flanges of said sections, a look
ing abutment on said member disposed between
?ange extending outwardly from said panel and
13. In a railway house car having a door open
ing, a sectional track secured to said car below
said opening, sections of said track being spaced
apart, each spaced track section having a hori
zontal ?ange and an outer downwardly extend~
ing vertical ?ange, a member extending between
and secured to said separate track sections and
having horizontal and vertical ?anges abutting
the corresponding ?anges of said sections, a look
ing abutment on said member disposed between
and extending upwardly above said track sec
tions, said abutment terminating below said door
55 opening and lying within the outer plane of the
vertical ?ange of said track sections, a lift door
for said door opening adapted for sliding move
ment upon said track, a locking detent provided
on said door, said detent being associated in lock
ing relationship with said abutment by lowering
movement of said door for the purpose set forth.
14. A door adapted to be mounted upon a rail
way house car for horizontal and vertical move
ments relative to said car, said door comprising
65 a gusset member secured to a lower corner there
of, said member having a downwardly opening
recess de?ning spaced vertical walls, one of said
walls being adapted to limit closingvmovement
of said door and the other of said walls being
70 adapted to lock said door against opening move
ment.
15. In a railway house car having a door open
ing and an under-frame including a side sill, a
sectional track secured to said car below said
75 opening, sections of said track being spaced apart,
3
of said door to prevent opening movement there- _.
of and being released from said abutment by ele
vating movement of said door.
17. A metallic door adapted to be mounted upon
and extending upwardly above said track sections,
said abutment terminating below said door open
ing, a lift door for said door opening adapted
for sliding movement upon said track, a locking
detent provided on said door, said detent being
40 associated in locking relationship with said abut
ment by lowering movement of said door for the
purpose set forth.
60
each spaced track section having a horizontal
?ange and an outer downwardly extending ver
tical ?ange, a member secured to said side sill
extending between and secured to said spaced
track sections and having horizontal and vertical
of said panel said member including a vertical
a gusset member having a locking detent secured -‘ -"
to a corner of said panel, said ?ange of said me
tallic member engaging and providing an abut
ment for said gusset member.
18. In a railway house car having a door open
ing, a track secured to said car below said open~
ing, a locking abutment secured to and extending
above said track and terminating below said door
opening, main and auxiliary lift doors slidably
supported on said track, a front stop member for
said main door secured to the forward vertical 45
margin of said auxiliary door, a gusset member
having a locking detent secured to the forward
lower corner of said auxiliary door, said stop
member terminating above the lower edge of said
door, said gusset member‘ projecting below and 50
inwardly of said stop member, said main door
having a substantially channel shaped vertical re
inforcing member secured to the forward vertical
margin thereof, the ?anges of said channel mem
ber at the bottom thereof being coped whereby r
the front vertical margins of said doors may be
properly associated in closed position, said detent
member on said auxiliary door having locking re
lationship with said abutment by lowering move
ment of said door for the purpose set forth.
19. In a railway house car having a door open
ing, a track secured to said car below said open
ing, said track having a horizontal ?ange and
an outer vertical depending ?ange, a member se
cured to said track having horizontal and verti- ,
cal ?anges abutting the corresponding ?anges of
said track, a locking abutment on said member,
said abutment and said member lying within the
outer plane of said vertical track ?ange, a lift
door adapted for sliding movement upon said 70
track, a locking detent on said door, said detent
being associated in locking relationship with said
abutment by lowering movement of said door to
prevent opening movement thereof.
GABRIEL MADLAND.
75
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