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Патент USA US2119589

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June 7, 1938.
2,119,589
c. F. LUTZ
DOOR CHECKING DEVICE
Filed Dec. 23, 1936
32
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BY I”. .5.
IN VENTOR.
hw/f;
M94. A TTORNEYé.
Patented , June 7, 1938
* 2,119,589
UNITED STATES PATENT OFFlCE
'
2,119,589
’
DOOR CHECKING DEVICE
Charles F. Lutz, MilwaukeaWis.
Application December 23, 1936, Serial No. 117,366
10 Claims. (CI. 16—84)
portions of the doors while closed, together with
This invention relates to improvements in door
the door checking mechanism;
checking devices.
Heretofore, considerable difficulty has been en
countered in connection with storm doors and
, other doors which are likely to be caught by a
strong gust of wind and blown open, and many
such doors have been broken because of failure
of the springs and checking devices with which
they are usually equipped.
ii).
It is a general object of the invention to pro
vide an improved door checking device which will
effectively prevent the damage referred to above.
A further object of the invention is to provide
a device of the class described which is not only
i5, adapted to prevent damage by wind but which is
also constructed to provide for proper closing
action of the door without unnecessary slam
ming.
A still further object of the invention is to pro
20. vide a door checking device which is constructed
for use on either a single or double door.
and
'
‘
Fig. 5 is a sectional view taken on line 5—5 of
Fig. 4, the dot-and-dash lines indicating the posi
tion of the automatic air valve while admitting
air to the bellows during the ?nal part of the 10
closing movement of the doors.
Referring more particularly to the drawing, the
numerals 8 and 9 designate vertically disposed
spaced-apart door frame parts, and the numer
als l0 and II designate doors which are hinged to 15 V
the members 8 and 9 respectively, asrat l2 and I3.
Any suitable yieldingmeans may be employed'for
normally urging the doors to closed position, and
in the drawing the yielding means l4 and I5 is
embodied in the hinge structure.
.
20
A supporting plate [6 is adapted to be secured
to an upper horizontal'portion ll of the door
Other speci?c objects of the invention are to
provide a door checking device wherein a novel
frame by means of screws or the like i8,.as indi
form of checking bellows is employed; wherein
cated clearly in Fig. 3. The plate It is provided
with a rearwardly offset portion H) (see Fig. 2), 25
25, said bellows is so mounted as to provide for pivotal
movement in two planes; wherein means is
embodied in said bellows for automatically ad
mitting additional air thereto at a limited rate
when the door is being opened; and wherein
30_ means is employed in connection with'the bellows
for automatically preventing the admission of
additional air during the ?rst part of the closing
movement of the door and for automatically ad_
mitting additional air during the latter part of
35 the closing movement of the door to provide for
proper closing action.
7
With the above and other objects in view the
invention consists of the improved door checking
device and all its parts and combinations as set
40 forth in the claims and all equivalents thereof.
In the accompanying drawing, illustrating one
complete embodiment of the preferred form of
the invention, showing the use of the device in
45 connection with double doors, wherein the same
reference numerals designate the same parts in’
all of the views:
Fig. 1 is a horizontal sectional view through
the upper portion of a double door structure,
50 showing a plan view of the improved door check
ing mechanism in the position assumed when the
doors are open;
Fig. 2 is a similar view showing the doors
closed;
55
Fig. 4 is an enlarged detail View showing the
bellows and supporting means therefor, parts be
ing broken away and shown in vertical section; 5
.
Fig. 3 is an elevational view showing the upper
which offset portion has 9. depending boss 28 pro- ‘
vided in its lower end with a threaded aperture 2|.
A bellows member 22 which is expansible at its
upper end through pivotal action on a lower end
hinge 23 has a hinge plate 24 secured to one wall 30
25 thereof (see Fig. Li). A sleeve 28 has project- ‘
ing from an upper portion thereof a comple
mentary hinge member 21 which is connected
by a pintle pin 28 with the hinge member 241 on
the bellows. A bolt 29 extends through the sleeve 35
26 and into the threaded opening 2! of the boss
20 to support the bellows, there being an enlarged
washer 30 at the lower end of the sleeve through
which a small bolt 3| extends to hold the sleeve
on the bolt 29. As a result of this construction ‘to
it is apparent that the bellows may pivot in a
horizontal plane around the bolt 29, and it is
also apparent that it may rock on the pintle
pin 28 during opening and closing movement of
the bellows.
Y
The other rigid wall 32 of the‘ bellows has a
rod 33 projecting therefrom, which rod is piv
otally connected as at 34 with a plate 35, said
plate 35 being mounted for oscillation on a stud
35 together with a link 37.
0
The stud 36 de- I -
pends from the plate It as shown in Fig. 3, and
the oscillatory plate 35 is secured to the link 31
to oscillate therewith on the stud 3%. The link
31 is in turn pivotally connected to one end’ of 55'
2
.
2,119,589
another 'linkr38, and the link 38 is pivotally con
be causing this opening movement of the doors, ‘
nected as at 39 to the door member H1.
the bellows would properly check such action
to prevent any damage because of the wind,‘in~ >
view of the fact that the bellows action and
the air adjustments do not permit the doors to
be blown open in such a manner that damage
The outer end offthe oscillatory plate 3_5 is also
pivotally connected as'at 40 with one. end of an
elongated link 4|. ; The other end of the link 4|,
is pivotally connected as at 42 to a lateral projec
' tion 43 of a link 44; The link“ is Preferably
formed in two parts, with an intermediately posi
tioned turn buckle 4!’. connecting the parts to
10' provide for adjustment of the effective length of
‘ the link.
The link 44 is pivotal on a stud 45
which depends from a plate 46, and the latter
plate is adapted to be secured to the door frame
member I‘! by means of screws or the like 41.
15 The outer end of the ‘oscillatory link 44 is pivot
ally connected as at‘48jto a link 49, and the
link 49 is pivotally connectedras at 50 to the other
door member ll. 7
‘
v A bellows member ‘comprises ‘the ?xed Walls
125 and '32, heretofore referred to, ?exible side
walls 5| and 572, and a ?exible top wall 53. These
.
r
?exible walls may be formed ‘of leather,‘ suitable '
. fabric, ?exible metal, or any other suitable ma-v
terial.
V
could result.
‘
After the doors have been opened the springs
l4 and I5 in connection with the door hinges 710'
will tend to close the same.
During the ?rst
part of this closing movement the doors move
rather slowly because there is an inward pres
sure on the bellows valve‘ rod 33 closing the port
60 so' thatonly air which'can escape. from the
bellows is through the opening 551 When, how-' 15
ever, the doors have been partly closed, ,then
the inner end of the screw 61 will rock the lever'
.63 within the bellows to open the port 66.
soon as the port 66 is open, then the doors will
close rapidly and with su?icient ‘force to provide 20
for proper latching thereof. The exact time
when this air is permitted to escape during close
ing movement of the doors may be regulated
by adjustment of the screw 61.1
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'
.
It is to be noted ‘that the novel method 0
,One of the rigid walls‘32 of the bellows may
have an air inletopening'54 therein, which open
mounting the bellows for pivotal movement in a.
ing is adapted to receivev a screw 55.
horizontal plane around the bolt 29 and also
The screw
25
'may be formed with a slot 56 in a side thereof, ‘ for pivotal movement in a vertical plane on the
,which slot gradually enlarges inwardly.
As a
result of thisv arrangement the screw’ may be
adjusted to normally permit the passage of a
desired quantity of air into and out 'of the bel
lows.
'
'
ments.
_
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-
7
It is to be understood that the invention is
well adapted for use on a single door as well as
‘
The bellows rod 33'is slidable in a' sleeve 51,
and said sleeve has its'inner ‘end belled as at 58
to substantially cooperate in' shape'with a valve
59 :formed on the inner’ end of the rod. 33.
pintle 28 provides for proper action of the bel
lows during its expanding and contracting move
The
Valve member 59 is movable a limited distance
inwardly and outwardly of the sleeve '51’ to pro
on a double door by merely omitting the link 4i
and the other links connecting said link with 35
the door member II.
.V
.
Various other changes ‘and ‘ modi?cations xmay
bermade without departing from the spirit ‘of g
the invention, and all of such changes are con
videior opening and closing of a ‘port_60 ex ' templated as may come withinthe scopeoi ‘the 40. "
. tending through the bellows wall 32. V'Whe‘n the
What I claim is:
valve .59 is in the full line position shown in ’
l. A door ‘checking device for use in connec- 5'
Fig. 4, it is apparent'that air "may pass from
within the bellows out of the port 60 and into tion with a hinged door comprising a, plurality
claims.
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‘
'
.
~
the port Bil is closed to shut off communication
of pivotally connected links for connecting the .45
door to the door “frame, a bellows connected
to and cooperable with said links for checking“
the opening and closing movement of said door,
between said port and the port 6|;
and means’ for automatically controlling the
'45
the atmosphere through an aperture 6| in" the
belled portion 58 of the sleeve 51.- When, how
"ever, the valve rod‘ 33 is pushed inwardly, then
7 .
,
freedom of escape of air‘fromi the bellows dur 50.
62 on'which alever {i3 is'fulcrumed, said lever ing closing; movement to provide greater re
'63 being normallyiurged to the full line position sistance during the ?rst part 'of said closing
50"
In a-lower, portion of the bellows is a post
' of Fig. 5 by a spring 65. ,When in'this full line ‘
55
so
position, it is apparent that a valve member 65
carried by one end of the lever 63 is closing
a port 66 in the bellows wall 25. When, however,
the bellows is compressed to such a point that
the inner end of an “adjustment screw v6‘! abuts
the end 50 of the pivoted-lever 63,'then ‘the
movement.
‘
r
.
,
2. A door checking device for use in connection‘ '
lever is rocked to the dot-and-dash line position (in connection with saidrbellows for automatically
of Fig. 5 toopen the port 65 and permit escape admitting additional air thereto at a limited rate,
. when the door is being opened, means in'connec- ,
of air from ‘the interior, of the bellows.
In operation, when the doors [0 and Il'are ; tion with said bellows automatically preventing "
'the escape of air from said’means during the
'being opened, the partswill move from the posi
65 tion of Fig.,2'to the position of Fig. 1, thereby
?rst part of the closing movement of the door,
. expanding the‘ bellows.
During such opening '
movementrthere is anfoutward'pull on the bellows
valve rod'33' so that air can enter the port" 60
70
through'a port B]. A slight amount of addi
tional air is also being admitted through the
.75
and other means for automatically permitting -
escape of air during the latter part of the closing
movement of the door to provide for proper
closing action.
'
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g
3. A door checking device for use in connection
with a hinged door comprising a plurality of
aperture 56 depending upon the exact adjust
ment of the screw 55. This amount of air which
pivotally connected links for connecting the door
is“ being admitted tothe bellows'duringv ex
todthe door frame, a bellows having a movable
wall portion and having an air port therein, a
, paneling movement thereof-is suf?cient toipermit
.
with a hinged door comprising a plurality of 65
pivotally connected links for connecting the door
to the door frame, a bellows connected to and;
cooperable with said links for'checking the open
ing and closing movement of said door, means
opening of the doors,-but?if a strong wind should, movable valve member cooperable with said port
,
3
2,119,589
and having a stem extending exteriorly of the
bellows from said movable wall portion, and
means including said stem for connecting the
bellows with said links, said valve member be
ing so mounted that when the door is being
opened, the valve member is automatically moved
out of engagement With said port to admit air to
the bellows, and when the door is being closed
the valve member is automatically moved into
sealing engagement with said port to prevent
escape of said air.
4. A door checking device for use in connec—
tion with a hinged door comprising a plurality of
pivotally connected links for connecting the door
‘to the door frame, a bellows connected to and
cooperable with said links for, checking the open
ing and closing movement‘ of the door, means for
admitting air to said bellows, during operating
movement thereof, said bellows having a port
therein, a lever pivotally mounted within the bel
lows and having a valve member at one end vco
operable with said port, and means engageable 1O
with the other end of said lever during the latter
part of closing movement of the door for auto
tion with a hinged door comprising a plurality ' matically opening said port.
of pivotally connected links for connecting the
15 door to the door frame, a bellows having a mov
able wall portion and having an air port there
in, a movable valve member cooperable with
said port and having a stem extending exteriorly
of the bellows from said movable wall portion,
20 means including said stem for connecting the
bellows with said links, said valve member be_
ing so mounted that when the door is being
opened, the valve member is automatically moved
out of engagement with said port to admit air
25 to the bellows, and when the door is being closed
the valve member is automatically moved into
7
‘7. A door checking device for use in connec
tion with a hinged door comprising a plurality 15
of pivotally connected links for connecting the
door to the door frame, a bellows connected to
and cooperable with said links for checking the
opening and closing movement of the door,
means for admitting air to said bellows during 20
operating movement thereof, said bellows having
a port therein, a lever pivotally mounted within
the bellows and having a valve member at one
end cooperable with said port, and adjustable
means engageable with the other end of said 25'
sealing engagement with said port to prevent
lever during the latter part of closing movement
'of the door for automatically opening said port.
escape of said air, and means for automatically
permitting escape of air from the bellows during
ing a door member and a door frame member, a
30 the latter part of the closing movement of the
door.
.
5. A door checking device for use in connec
tion with a hinged door comprising a plurality
of pivotally connected links for connecting the
35 door to the door frame, a bellows having a mov
able wall portion and having an air port therein,
a movable valve member cooperable with said
port and having a stem‘ extending exteriorly of
the bellows from said movable wall portion,_
means including said stem for connecting the
bellows with said links, said valve member being
so mounted that when the door is being opened,
the valve member is automatically moved out of
engagement with said port to admit air to the
45 bellows, and when the door is being closed the
valve member is automatically moved into seal
ing engagement with said port to prevent escape
of said' air, said bellows having another port
therein, a lever pivotally mounted within the
50 bellows and having a valve member at one end
cooperable with said last mentioned port, and
means engageable with the other end of said
lever during the latter part of the closing move
ment of the door for automatically opening said
last-mentioned port.
6. A door checking device for use in connec
8. In combination, a door structure compris
bellows, means providing for pivotal movement 30
in two directions connecting one wall of said
bellows with one of said door structure members,
and means including pivotally connected links
for connecting the opposite wall of the bellows
35
to the other of said door structure members.
9. In combination, a door structure comprising
a door member and a door frame member, a bel
lows, means connecting one wall of said bellows
with one of said door structure members to pro
vide for pivotal movement of the bellows in a 40
plane at substantially right angles to the plane
of expansive movement of the bellows, and means
including pivotally connected links for connect
ing the opposite wall of the bellows to the other
of said door structure members.
45
10. In combination, a door structure compris
ing a door member and a door frame member, a
checking device pivotally connected at one end
to the door frame, a bell crank pivotally con
nected to the door frame and having a ?rst arm 50
pivotally connected to the other end of the check
ing device, and pivotally connected links con-v
necting the second arm of the bell crank to the
door.
CHARLES F. LUTZ.
55
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