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Патент USA US2412346

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Dec” 10, 1946.
T_ MADLAND
’
‘
2,412,346
DOOR OPENING AND CLOSING DEVICE
Filed Dec. 7, 1942
23
2 Sheets-‘Sheet l
45
- 40
34
‘Marry?
Dec. 10, 1946.
'
T. MADLAND
' 2,412,346
DOOR OPENING AND CLOSING DEVICE
Filed Dec. 7, 1942 _
’
2 Sheets-Sheet 2
'~ l/VVE/V ‘foe ~
THOR 1/671. 0 .MQDL 9ND
y "W 61/;
Patentecl Dec. 10, 1946
2,412,346
‘UNITED STATES PATENT OFFICE
DOOR OPENING AND CLOSING DEVICE
Thorvald Madland, Chicago, 111., assignor to The
- Youngstown Steel Door Company, Cleveland,
Ohio, a corporation of Ohio
Application December 7, 1942, Serial No. 468,050
4 Claims. (01. 268-44)
1
2
This invention relates to door opening and
closing devices and is concerned primarily with
such devices for sliding car doors.
It is an object of this invention to provide open
double door construction for railway house cars.
ing and closing devices for sliding doors embody
The main door H) of this construction embodies
a metallic panel I 1 formed with a plurality of
01
ing an opening lever and a closing arm, wherein
thellever and ‘closing arm are formed as a unit
capable of exerting door closing force of increased
magnitude without involving an increase in the
length of the lever.’
.
horizontal corrugations I2 which merge'at their
ends into vertical corrugations disposed adjacent
to the vertical edges of the panel. One of ,the
vertical corrugations I3 is illustrated. Each of
the vertical corrugations is reinforced by means
of a substantially U-shaped member I 4 riveted
10 to it and is bridged by means of a plate member
A further object is to provide opening and
closing devices for sliding doors embodying a
15 fastened to the panel at opposite sides of the
corrugation. The vertical margins of the panel
lever and a closing arm wherein the lever is con
are reinforced, the reinforcement at the front
structed to cooperate with an abutment member
vertical margin being designated by the refer
to secure door opening movement and the clos
ence numeral I6.
ing arm is carried by the lever and adapted to
cooperate with the abutment memberto secure
door closing movement.
A further object is to provide opening and
The front vertical margin of the main door is
adapted to be received within a pocket I‘! formed
by means of a front stop member I8 and a flange
IQ of a door post 20 which are secured tofa me
,closing devices for sliding doors embodying a 20 tallic panel 2| forming part of the auxiliary door
pivotedlever so constructed that it will hang in
22 of the double door construction. The metallic
panel 2| is provided with a plurality of horizontal
a predetermined position and be limited in its
corrugations 23 and vertical corrugations, one of
swinging movement.
‘A, further object is to provide opening and
which is designated by the reference numeral 24.
closing devices for sliding doors embodying a 25 A knee brace 25 is customarily employed to brace
pivotally associated opening lever and closing
the panel 2| against the auxiliary door post 20.
arm unit wherein the lever is constructed to
maintain the arm in such position as to insure
In the illustrated embodiment’of the invention
a base plate 26, preferably in the form ofra cast
automatic engagement between the arm and. an
abutment member.
A further object is to provide opening and clos
ing devices for sliding doors embodying a pivot
ally associated opening lever and closing arm unit
constructed to insure automatic disengagement of
ing, is secured upon one of the horizontal corru
30
gations l2 of the main door. The base plate 26
comprises a portion 21» Which conforms substan
tially to the horizontal corrugation ‘l2 and which
is secured thereto as by means of rivets 28. Ad
jacent to the front vertical margin of the main
door the base plate 26 is increased in width to
w I provide a portion .29 which lies upon and is fas
ing movement of the door.
tened to the vertical corrugation 13. At the
Other objects of the invention will become clear
as the description thereof proceeds.
upper forward corner of the portion 29 of the base
plate an outwardly extending lug 30 is provided
In the drawings forming part of this speci?ca
tion:
40 one margin of which is curved as indicated at 3|.
The widened portion 29 of the base plate is also
Fig. 1 is a fragmentary elevation illustrating the
formed with a hollow boss 32 upon which the lever
invention applied to a double door construction
for railway house cars.
.34 of the opening and closing device of the in
.stant invention is pivotally mounted. This
Fig. 2 is a horizontal section taken on line 2-2
of Fig. 1.
'
'
45. mounting is provided by means of .a rivet 33 ex
tending through the boss and a washer 35 of
Fig. 3 is a view similar to Fig. 1 illustrating one
larger diameter than the boss and fastened there
of the doors opened by means of the opening
the arm from an abutment member during open~
‘
lever.
Fig. 4 is a view similar to Fig. 1 showing the
maximum opening of one of the doors at which
engagement between the closing arm and an abut
ment member can be obtained in order to close
the door.
The drawings illustrate the preferred embodi
. .ment of the invention applied to a well known 55
to by means of the ‘rivet.
‘The lever 34, as more clearly illustrated in Fig.
1 of the drawings, is pivotally mounted upon the
boss 32 intermediate its ends. The lower por
tion of the lever is formed with a hand grip 3B
and one edge of the upper portion thereof isin
the form of a cam surface 31. The inner face of
the lever 34 is provided with an inwardly extend
2,412,846
r
" ii I “
i
4
V
V
ment of the main door is continued when the
ing lug 38 which is adapted to engage the adja- '
cent edge of the widened portion 29 of the base
plate in order to maintain the lever normally in
‘ .the’ position illustrated in Fig. 1 of the drawings
and to engage another portion of the edge of the
widened portion 29 of the base plate in order to .
limit swinging movement of‘ the lever as illus
trated in Fig. 3 of the drawings; The outer
face of the lever 34 is formed with an optwardly
extending lug 39 for a purpose hereinafter indi 10
closing arm 4| is engaged with one of the shoul
ders on the abutment member 41 the lever will
be caused to swingin clockwise direction as a,
result of this engagement. When the counter-F
clockwise movement of the lever has continued
to the point where the curved surfaces of the lugs
30 and 45 again engage the closing arm will be
raised above the shoulder so that the opening
movement of the door can continue without the
" 'need for further manual operation of the lever.
cated. The lever 34 is also provided with an out- ‘
This action will occur with each of the shoulders
wardly extending hollow boss 40 upon which a
catch arm 4| is pivotally secured by means of a
until the closing arm has passed shoulder 48. ' As
the'lever falls inclockwise direction it will as-' V
sume' the positionv illustrated in Fig. 1 of the '
rivet'42 passing through the boss and fastening
a washer 43 of greater diameter than the boss‘
upon'the outer end thereof.
drawings, this position being determined by the
The catch arm 4| is substantially in the form .
engagement of the lug 38 on the lever and’ the
of a hook shaped member, the forward face of
which is inclined as indicated at 44. A lug 45‘
extends inwardly from ‘the rear portion of the. 20
closing arm. The lug 45 includes a curved por
tion 46 which is adapted to cooperate with the
curved portion 3| of the lug 30 provided on the
widened portion 29 of the base plate for the pur
pose hereinafter indicated.
1
adjacent edge of the widened portion of the base
plate 26. In this position of the lever it will be
apparent from Fig. 1 of: the drawings that the
closing arm 4| will be supported upon'theoute
wardly extending lug 39 [formed onthe-levern: V
vIn the closing movement of, the doorthejclos- . V ‘ -
ing arm 4| may be supported ‘bvithe lug" .39 so
as to insure engagement betweentheinclined '
wall 50 of the abutment member’v and the in
An abutment member 4‘! adapted to cooperate
' with the lever 34 and the closing arm 4| is fas
‘tened to the auxiliary door 22, as more clearly
clined portion 44 of the closing arm. iThis 5e11
gagement will force the closing arm upwardly so
illustrated in Fig. 2 of the drawings. > The abut
as to insure engagement between it and the shoul- '
ment member 4'! is preferably in the form of a
casting and is formed with a plurality of spaced
shoulders 48 and '49. The shoulder 48 is pro
vided with an inclined wall 59 and the shoulder
'49 is provided with an inclined wall 5|. These ‘
inclined walls of the shoulders 48'and 49 are
adapted to engage the inclined face 44 of the
der 48. Similarly if the closing movement of
the door continues until ‘engagementoccurs'be
tween the inclined wall5| of shoulder 49 and the
inclined'portion 44 of the closing arm, the latter
will again be raised and engagement'e?ected with
the shoulder. Operation of the lever 34 at this
time in clockwise direction
closing arm so as to automatically raise the arm‘
fully closed.
will 1 force the door“
'
In Fig. 4 of the drawings the extreme‘ closing ‘
and permit engagement thereof with the shoul
ders in order to eiiect closing ,movementof the
door. The closing arm 4| is supported in proper
7
movement which can be obtained by means of
40
the opening an closing device is shown‘: Assum
position to permit engagement of the inclined‘
inggthat the door has been closedfto thev extent
face 44 thereof withthe inclined walls 59 and 5|
by means of the 111g 39 formed on thelever.‘
illustrated?the operating lever isswung
Referring to Fig. 3 of the drawings, it will be‘
apparent that the cam surface '31 of the lever‘v ~~
cooperates with the abutment‘member 41 upon
swinging movement of the lever. counterc1ock-‘
coun- "
terclockwise direction so as-‘to project jthe‘i‘clo‘v's
ing arm forwardly and permit engagement there;
'of with the shoulder 48._ A force exerted?u'pon
the lever at this time so as toswing itin-clo'ck
wise , direction will cause ‘the door ‘it movein
wise to impart initial opening movement to the
closing direction but will not fullyclosezthe door.
door. It will also be apparent ‘from this ?gure
The lever is again swung counterclockwise-so ‘as
to project the closing arm into ‘engagement with
of ‘the drawings that the closing arm is projectedi »
forwardly during the swinging movement of the
‘the shoulder 49. A force appliedytofthe'leverto
lever so as to be released from the engagement
‘ swing it in clockwise direction will then complete.
the closing movement of the door.v -
with the shoulder 49, illustrated in Fig. 1 of the
drawings. As. the door is opened the inwardly
fThe Qpenin'gand closing device ‘of theiin'starit '
extending lug 45 provided on the closing arm ap-’ I
invention secures a door closing ‘forc'ejofjin
proaches theoutwardly extending lug 30 provided
creased magnitude without increasingjthelength
of the lever. This'is obtainedjbyglocating‘the
pivot of the closing-arm at“ a; smaller’ distance
on the widened portion of the base plate 26 until
contact is obtained between the curved surfaces
on these lugs. These curved surfaces upon con
tinued counterclockwise movement of the leverv
34 cause the closing arm to swingiupwardly about
' its pivot until it is raised above the‘shoulders48
and '49. The counterclockwise swinging move
ment of the lever is limited by the engagement
‘ . of the inwardly extending lug 3.8 andtheadjaé
cent edgeof the base plate.v
'
‘
' from‘the lever pivot than the portion of *thejicam
surface of- the lever more remote fromthetleyer
pivot; CBy means of this relationship, vthelever- ~
age arm of the door is decreased sojthatjja cor
respondingly smaller force isllfqqull‘cd‘IQQ'CIOSQ
' the door. Expressed otherwise, it is possiblezwith
the opening and closing'device oftheinstant in
‘
sliding
ventionidoor‘
to. effegt:
of" greater
?nal‘. closing
weight! mbveinentribf
with-the'applie
ea I '
With the parts of the opening and’ closing ‘de
vice maintained in the position shown in Fig. 3
cation of the same force‘ heretofore usedljfor '~ A
' of’ the drawings the door may‘ be moved‘ to its
lighter doors and this isaccornpIiShed without '
full opened position. 'Howeven'i-f the lever is re-> 70 increasing the length of the l’évi'e'r‘;~ 5
leased ‘so that it swings
clockwise direction
While the invention ‘has been'ishown ' applied" to
and the closing arm drops into?engagement with
one of the shoulders 48 and 49 the door may still
be moved to'~f1_1l1 open‘ position without further
' ‘manualoperation or; the device. *As'the move-K
r a double door‘ construction 'for*’railwayl_house
09115, it Will be apparent to those skilled in'i-the
art that the invention »is~applicable-_ as‘lwelllto
single door constructions‘ if 'orf railway house Tears. l
2,412,846‘
5
In the latter case the abutment member 41 will
be fastened to‘the side Wall of the car rather
than to an auxiliary door. It will be apparent,
moreover, that the lever may be fastened to the
car side or to the auxiliary door and that the
abutment member may be secured to the main
door with such changes as are necessitated by
the main door construction.v
It Will be apparent that numerous changes and
modi?cations in the details of the invention will
be clear to those skilled in the art. It is in
tended, therefore, that all such modi?cations and
on said catch arm spaced from the pivot of said
catch arm, said means being engageable with a
member on a said door during opening move
ment of said door by vsaid lever to automatically
raise said catch arm.
3. A lever and arm unit for an opening and
closing device for sliding car doors comprising a
base plate, a lever pivotally mounted interme
diate its ends upon said base plate, said lever
having a cam adapted to engage an abutment to
impart opening movement to a said door, a catch
arm pivotally carried by said lever adapted to
changes be comprehended within this invention
engage a shoulder to impart closing movement to
which is to be limited only by the scope of the
a said door, means on said catch arm spaced
claims appended hereto.
15 from the pivot of said catch arm, and a member
I claim:
1. An opening and closing device for sliding
car doors comprising an abutment, a shoulder
on said base plate engageable by said means on
said catch arm during opening movement of
a said door by said lever to automatically raise
on said abutment, a lever adapted to be pivotally
said catch arm.
mounted intermediate its ends upon a said door, 20
4. A lever and arm unit for an opening and
a cam on said lever engageable with said abut
closing device for sliding car doors comprising a
ment to impart opening movement to said door,
lever adapted to be pivotally mounted intermedi
a catch arm pivotally fastened to said lever, said
ate its ends, a cam on said lever adapted-to
catch arm being engageable with said shoulder
engage an abutment to impart opening move
to impart closing movement to said door, means 25 ment to a said door, a catch arm pivotally fas
on said catch arm spaced from the pivot of said
tened to said lever in closer proximity to said
catch arm, and means on said door engageable
lever pivot than the remote portion of said cam
with said catch arm means during opening move
adapted to engage a shoulder to impart closing
ment of said door by said lever to automatically
movement to a said door, and means on said
raise said catch arm above said shoulder.
30 catch arm spaced from the pivot of said catch
2. A lever and arm unit for an opening and
arm, said means being engageable with a mem
closing device for sliding car doors comprising,
ber on a said door during opening movement of
a lever adapted to be pivotally mounted inter
said door by said lever to automatically raise said
mediate its ends, a cam on said lever adapted to
catch arm, the leverage arm of said catch arm
engage an abutment to impart opening movement 35 being less than the leverage arm of said remote
portion of said cam.
to a said door, a catch arm pivotally carried by
said lever adapted to engage a shoulder to im
part closing movement to a said door, and means
THORVALD MADLAND.
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