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Патент USA US2108720

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Feb. 15, 1938.
2,108,72Q
L. C. LUKE
SLOT CLOSER
Filed Jan. 11, 1937
‘
3 Sheets-Sheet 1
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$1M?
BY
INVENTOR'.
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6.
_
ATTORNEY .
Feb. 15, 193%.,
L. C. LUKE
SLOT CLOSER
Filed Jan. 11, 1937
3 Sheets-Sheet 3
QB
INVENTOR.
ATITORNEY . “
2,108,720
Patented Feb. 15, 1938
UNITED STATES PATENT OFFlCE
2,108,720
SLOT CLOSER
Leo 0. Luke, Evansville, Ind., assignor to Inter
national-Door Company, Evansville, Ind., a
corporation of Illinois
Application January 11, 1937, Serial No. 120,085
18 Claims.
My invention relates; broadly to revolving doors
and more particularly to an improved mechanism
for automatically closing the longitudinally ex
tending slot provided in the ceiling of a revolving
5 door drum for allowing the shifting of the revolv
ing door structure from a central position to a
position adjacent one side of the revolving door
with the revolving door wings in collapsed posi
tion.
10
.
.
One of the objects of ‘my invention is to provide
' a simpli?ed and ei?cient construction of slot
closer for revolving door structures.
Another object of my invention is to provide a
construction of slot closer for the slotted ceiling
of revolving doors in which the slot closing plate
is mounted for oscillatory movement subject to
actuation by the shaft of the revolving door when
the revolving door is shifted either to a remote
position adjacent one side of the revolving door
20 drum or to a position central of the revolving door
drum.
~
Still‘ another objectof my invention is to pro
vide a mounting for a slot closing plate for the
‘slotted ceiling of a revolving door‘ drum having
25 means pivotally connected with opposite ends of
the slot closing plate and pivotally supported with
respect to the revolving door for shifting the slot
closing plate to a position closing the slot in the
slotted ceiling when the revolving door shaft
30 reaches either of the limits of the path of travel
thereof.
. A further object of my invention is to provide
a construction of pivoted cam. means pivotally
supporting a slot closing plate adjacentthe slot
35 in the slotted ceiling, of a revolving door drum and
operated by the shaft of a revolving door as the
revolving door shaft reaches the limit of travel
in either of the remote positions thereof for in
suring the closing of the slot'of the slotted open
40: ing when the revolving doors are either collapsed
adjacent one side of the revolving door drum or
journalled for normal rotative movement cen
trally of the revolving door drum.
.
Other and further objects of my invention re
45 side in the arrangement of mounting means for a
slot closer operative adjacent the slotted ceiling
of a revolving door drum, as set forth more fully
5.0
in the speci?cation hereinafter following by ref er
ence to the accompanying drawings in which:
Figure 1 is an elevational View partially broken
away and shown in section and illustrating a
fragmentary portion of revolving door wings car
ried by the revolving door shaft in a normally
central position with respect to the ‘revolving
55_ door drum and with the slot closing plate in a
(Cl. 20——18)
position closing the slot in the slotted ceiling;
Fig. 2 is a fragmentary side elevational view
partially in section and illustrating the revolvingv
door shaft shifted to the limit of its position ad
jacent one side of the revolving door drum; Fig. 3 5
is a perspective view illustrating in spaced ar
rangement the several parts constituting the
mounting means for the slotclosing plate of my
invention, and showing the slot closing plate
broken away and foreshortened; Fig. 4 is a plan 10
view of the slot closing plate of my invention
illustrating the mounting means therefor with
the revolving door shifted to a central position
and the slot closed; Fig. 5 is a plan View illustrat
ing the position of the slot closing plate when the 15
revolving door is being shifted from the normal
central position to a collapsed position adjacent
one side of the revolving door drum; Fig. 6 is a
plan view showing the position of the slot clos
ing plate after the revolving door has been moved 20
to a position adjacent one side of the revolving
door drum with the slot closing plate closing the
slot in the slotted ceiling of the revolving door
drum; Fig. 7 is a transverse sectional view taken
on line 1-1 of Fig. 4; Fig. 8 is a transverse
sectional view taken on line 8-8 of Fig. 4; Fig. 9
5
is a transverse sectional view taken on line 9—9
of Fig. 4; Fig. 10 is a side elevational view par
tially in cross section and foreshortened for il
lustrating the slot closing plate in a position clos- 3O
ing the slot in the slotted ceiling when the revolve
ing door is shifted to a position adjacent one
side of the drum of the revolving door; Fig. 11
is a longitudinal sectional View of the slot closing
plate illustrated in Fig. 10 and showing in section
the cam means which provide for the pivotal
mounting of the slot closing plate adjacent oppo
site ends of the longitudinally extending slot in
the ceiling of the revolving door drum; and Fig.
12 is a transverse sectional view taken on line
I 2—| 2 of Fig. 1 with parts shown partially in side
elevation.
Referring to the drawings in more detail, ref
erence character I designates the revolving door
wings which are mounted by means of hangers 2
with respect to the revolving shaft 3. A trolley
4 is provided for supporting the revolving door
shaft 3 in such a manner that rollers 5 on the
frame 4 of the trolley may operate over the dia
metrically extending guide rails 6 for shifting the
collapsed revolving door structure from the cen
tral rotative position to a position adjacent one
side of the revolving door drum. The trolley 6
also carries the governor housing 1 for control
ling the rotation of the revolving door wings. 55
2
2,108,720
The ceiling 8 of the revolving door drum is pro
vided with a radially extending slot l2 through
which the shaft 3 extends and along which the
shaft 3 is adapted to be shifted in a vertical po
sition in removing the shaft 3 from a central po~
sition to a collapsed position adjacent one side of
the drum of the revolving door. The ceiling 8 is
provided with a countersunk or recessed portion
immediately surrounding the slot [2 for receiv
10 ing the plate In which is slotted at M in a man
ner corresponding to the arrangement of the slot
l2 in ceiling 8. Slotted plate Ill is secured to
ceiling 8 by suitable means such as screws II.
15
I provide brackets l5 and 25 supported on plate
Ill adjacent opposite ends of slot l4 having por
tions directed toward each other and over the
longitudinally extending slot M. The brackets
l5 and, 25 are secured to plate It in any suitable
manner. I have shown bracket l5 secured to
20 plate It} by means of rivets l6 passing through
apertures lBa, as shown more clearly in Fig. 3.
I have shown bracket 25 as provided with aper
tures 26a for the passage of rivets 26 there
through.
'
The brackets l5 and 25 serve as mounting
means for the slot closing plate 23 through the
interposition of disc members IT and 21. Disc
member I1 is pivoted with respect to bracket l5
through the agency of the rivet member l8 which
passes through aperture I8a in bracket l5 and
aperture I81) in disc member IT.
The disc member I1 is provided with a radially
extending notch l9 having a width slightly larger
than the diameter of the vertically projecting
portion 3 of the revolving door. The disc mem
ber IT has a chordal cut-away portion 20 adjacent
the outer extremity of the notch 9. The disc
member I‘! is provided with a member extending
normal to the plane thereof in a position adjacent
the periphery of the disc member and located on
radial lines at an obtuse angle with respect to a
medial radial line through the radially extending
notch l9.
The member 2| is headed on one side
of the disc to provide a positive stop on the other
side of the disc, as illustrated in Fig. 8, between
disc member I1 and slot closer plate 23. Aper
ture 2| 1) in slot closer plate 23 provides a pas
sage for the pivot means 2! which projects from
the headed end forming the stop. There is a
notch 22 provided in bracket 15 for receiving the
headed stop 2| when the slot closer plate 23 is
in one of its extreme positions in the oscillatory
path of travel of the slot closer plate 23.
The slot closer plate 23 is provided with a pair
55 of peripherally extending ribs 24 for strengthen
ing plate 23 and preventing ?exing thereof as
endwise forces are applied to the plate in ef
fecting oscillatory movement thereof.
Bracket 25 provides pivotal mounting means
A rivet 28 extends through
aperture 28 in bracket 25 and through aperture
281) in disc member 2'! providing rotative mount
60 for disc member 21.
ing means for disc member 21. A radially ex
tending notch 29 is provided in disc member
65 21 of slightly larger dimension than the diameter
with respect to a medial line through radially
extending notch 29.
Member 31 provides a stop
on the upper face of the disc member 21 and a
pivot means projecting below disc member 21 as
represented by pivot member 3Ia between disc
member 21 and slot closer plate 23. The pivot
member 3m passes through aperture 3| b in slot
closer plate 23. The disc member 21 is freely
rotatable about pivot 28 and plate member 23
is adapted for oscillatory movement about pivot 10
member 3| as a center.
Bracket 25 is notched at 32 for receiving stop
3| and limiting the oscillatory movement of plate
23.
The diametrically extending rails 6 are inte 15
grally formed from the channel shaped member
33 which extends diametrically across the top of
the revolving door drum. The lower portion of
channel 33 is slotted at 34 in alignment with the
slots I2 in ceiling 8 and M in plate I!) for per 20
mitting longitudinal movement of the upper por
tion 3 of the shaft of the revolving door.
The slot closer plate 23 is capable of oscilla
tory movement within limits determined by the
abutment of limiting stop 2 I‘ in notch 22 in brack 25
et I5 on the one hand and by the abutment of
stop 3| in notch 32 in bracket 25 on the other
hand. In addition to this arrangement of limit
ing stops, I provide limiting stops 35 and 36
against which the peripheral edge of slot closer 30
plate 23 abuts. The limiting stops 35 and 36 are
provided with apertures 35b and 361) through
which sets of screws or other securing means
35a and 36a. extend for securing the stops 35
and 36 is position with respect to plate It.
The trolley 4 is limited in movement to a po
sition adjacent one side of the drum of the re1
volving door by means of the stop 31 and ad
justable screw 38 which extends therethrough.
The slot, closer of my invention has proven
highly effective in manufacture, assembly and
production. The revolving door shaft exerts a
force against the cam shaped chordal cut-away
and notched portions of the disc members I‘! and
2‘! which insures a positive opening of the slot 45
in the ceiling of the revolving door drum from
a normally closed position to allow shifting of
the revolving door structure from a central posi
tion to a position adjacent one side of the drum
of the revolving door with an accompanying 50
positive closing of the open slot when the re
volving door shaft reaches the limit of movement
thereof adjacent the side of the revolving door
drum. Likewise, when the revolving door is re
turned to normal position, the disc members co 55
act to automatically open the normally closed
slot and automatically close the slot after the
revolving door has been restored to its normal
central position.
While I have described my invention in one 60
of its preferred embodiments, I desire that, it
be understood that modi?cations may be made
and I intend no limitations upon my invention
other than may be imposed by the scope of the
appended claims.
7
65
of the upwardly projecting portion of shaft 3
What I claim as new and desire to secure by
and into which shaft 3 moves upon approach of
shaft 3 to its limit of travel to theposition ad
Letters Patent of the United States, is as fol
lows:
1. A slot closer for the longitudinally extend
ing slot in the ceiling of a revolving door drum 70
jacent one side of the revolving door drum.
Disc member 21 is provided with a chordal
cut-away portion 36 adjacent notch 29 for co
action with shaft 3, as illustrated more fully in
Figs. ll, 5, and 6. The disc member 27 carries a
member 3| adjacent the periphery of the disc
and on a radial line extending at an obtuse angle
through which the revolving door shaft extends,
comprising supports adjacent opposite ends of
the slotted portion of the ceiling, a slot closing
plate, and means carried by said supports for
suspending said slot closing plate for oscilla
73
2,108,720,
10
20
25
30
35;
40
3
tory movement for opening or closing the slotted . ports, and a pivotal connection between said ro
portion of the ceiling, said means being engaged tary devices and said slot closing plate, said
and actuated by the shaft of the revolving door. rotary devices being engageable by said shaft ad
2. A slot closer comprising in combination jacent opposite ends of said slot for moving said
with a slotted plate providing a longitudinally slot closing plate for opening or closing the slot
in said member.
extending path of travel for a shaft member ex
8. A device of the character described com
tending therethrough, a slot closing plate, sup
ports carried by said slotted plate, and means prising in combination, a member formed with a
relatively long narrow slot, a shaft extending
for suspending said slot closing plate in said sup
ports and operative in an oscillatory path, said through and shiftable along said slot, a support
means being engaged and actuated by said shaft carried by said member adjacent each end of the
member in the shifting of the shaft member in slot, a rotatable member journaled in each of
said slotted plate for opening or closing the slot said supports, each of said members having a
radially disposed recess therein engageable with
in the slotted plate.
1
the shaft as the shaft is shifted to either end of
3. A slot closer for the longitudinally extend
ing slot in the ceiling of a revolving door drum the slot, a slot closing plate and a pivotal con
through which the shaft of the revolving door nection, between said slot closing plate and each
is shiftable, comprising in combination with a of said members whereby said slot closing plate
slotted ceiling plate, supports adjacent opposite is adapted to be swung into a position covering
ends of the slot in the slotted ceiling plate, a slot or uncovering said slot.
9. A device of the character described compris
closing plate, and rotatable means interconnect
ing said supports and said slot closing plate for ing in combination, a member formed with a
allowing swinging movement of said slot closing relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support
plate to cover or uncover the slot in said slotted
ceiling plate, said rotatable means being engaged carried by said member adjacent each end of the
slot, a rotatable member journaled in each of
and actuated by said shaft.
said supports, each of said members having a
4. A slot closer for the longitudinally extend
ing slot in the ceiling of a revolving door drumv radially disposed recess therein engageable with
through which the shaft of the revolving door the shaft as the shaft is shifted to either end of
is shiftable, comprising in combination with a the slot, a slot closing plate and a pivotal connec
slotted ceiling plate, supports adjacent opposite tion between said slot closing plate and each of
ends of the slot in the slotted ceiling plate, a said members whereby said slot closing plate is
slot closing plate, a disc member journalled in adapted to be swung into a position covering or
each of said supports, and a pivotal connection uncovering said slot, and a limiting Stop carried
between said disc members and said slot closing by each of said rotatable members and adapted
plate, said disc members being engageable by to alternately abut respectively with the said sup
said shaft for moving said slot closing plate for ports when said slot closing plate is shifted to
covering or uncovering the slot in the slotted either of the two positions thereof in which the
ceiling plate, according to the shifting of the slot in said ?rst mentioned member is closed.
10. A device of the character described com
revolving door shaft in the longitudinally ex
tending slot.
5. A slot closer for the longitudinally extend
ing slot in the ceiling of a revolving door drum
through which the shaft of the revolving door is
45 shiftable, comprising in combination with a
slotted ceiling plate, supports adjacent opposite
ends of the slot in the slotted ceiling plate, a slot‘
closing plate, a disc member pivotally mounted
in each of said supports, a pivotal suspension
50 for said slot closing plate between said disc
members, and means for effecting an engage
ment between said shaft and said disc members
as said shaft shifts to the limits of travel thereof
in the slotted ceiling plate for covering and
55 uncovering the slot in said slotted ceiling plate.
6. A slot closer for the longitudinally extend
ing slot in the ceiling of a revolving door drum
through which the shaft of the revolving door
is shiftable, comprising in combination with a
60 slotted ceiling plate, supports adjacent opposite
ends of the slot in the slotted ceiling plate, a
slot closing plate, and means for suspending said
slot closing plate in said supports engageable by
said shaft for moving said slot closing plate for
65 covering or uncovering the slot according to
the shifting of said shaft from one limiting posi
tion to another.
'
'7. A device of the character described com
prising in. combination, a member formed with
70 a relatively long narrow slot, a shaft extending
through and shiftable along said slot, a slot clos
ing plate member swingable from a position
wholly covering the slot to a position wholly
uncovering the slot, supports carried by said
75 member, rotary devices journaled in said sup
10
15
20
30
35
40
prising in combination, a member formed with a
relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support
carried by said member adjacent each end of the
slot, a rotatable member journaled in each of 45.
said supports, each of said members having a
radially disposed recess therein engageable with
the shaft as the shaft is shifted to either end of
the slot, a slot closing plate and a pivotal con
nection between said slot closing plate and each 50
of said members whereby said slot closing plate
is adapted to be swung into a position covering or
uncovering said slot, and a limiting stop carried
by each of said rotatable members and coacting
with the respective supports for limiting the path
of movement of said slot closing plate.
55
11. A device of the character described com
prising in combination, a member formed with a
relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support 60
carried by said member adjacent each end of the
slot, a rotatable member journaled in each of
said supports, each of said members having a
radially disposed recess therein engageable with
the shaft as the shaft is shifted to either end of 65
the slot, a slot closing plate and a pivotal con
nection between said slot closing plate and each
of said members whereby said slot closing plate
is adapted to be swung into a position covering
or uncovering said slot, and abutments carried 70
by said ?rst mentioned member and by said
rotatable members for limiting the path of travel
of said slot closing plate.
12. A device of the character described com
prising in combination, a member formed with 75
4
aim-3,720v
a relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support
carried by said member adjacent each end of the
slot, a rotatable member journaled in each of
said supports, each of said members having a
radially disposed recess therein engageable with
the shaft as the shaft is shifted to either end of
the slot, a slot closing plate and a pivotal con
nection between said slot closing plate and each
10 of said members whereby said slot closing plate is
adapted to be swung into a position covering or
uncovering said slot, said rotatable members each
having a limiting stop thereon coaoting with the
respective supports and said ?rst mentioned
15
angularly shiftable members in a position re
moved from the cam shaped deformation therein
through the angular distance of an obtuse angle.
15. In combination, a member formed with a
relatively long and narrow closed slot, a shaft
extending through and shiftable along said slot,
a slot closing‘plate and means connected with
said. plate and actuated by said shaft in moving
into and out of the limiting positions thereof in
said slot for respectively closing and opening said
slot by said plate, said means being operative to
move the same portion of said plate to close
said slot with the shaft in either limiting posi
with one of the peripheral edges of said slot clos
tion thereof in said slot.
16. In combination, a member formed with a 15
relatively long and narrow closed slot, a shaft
ing plate, said stops coacting to form abutments
extending through and shiftable along said slot,
member having limiting stops thereon coacting
determining the extent of travel of said slot clos
ing plate.
13. A device of the character described com
prising in combination, a member formed with a
relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support
carried by said member adjacent each end of
a slot closing plate, and means connected with
said plate and actuated by said shaft in moving
into and out of the limiting positions thereof in 20
said slot for respectively closing and opening said
slot by said plate, said means being operative
to move said plate in an are for opening and
closing said slot as said shaft is moved from one
the slot, an angularly shiftable member jour
naled in each of said supports, a cam shaped
deformation in each of said shiftable members
limiting position to the other in said slot.
engageable with said shaft, a slot closing plate
and a pivotal connection between said slot closing
extending through and shiftable along said slot,
plate and each of said angularly shiftable mem
said
into
said
slot
bers whereby movement of the shaft in engage;
ment with the cam shaped deformations in said
angularly shiftable members effects a movement
of said slot closing plate with respect to the long
35 narrow slot.
14. A device of the character described com
prising in combination, a member formed with
a relatively long narrow slot, a shaft extending
through and shiftable along said slot, a support
carried by said member adjacent each end of the
slot, an angularly shiftable member journaled in
each of said supports, a cam shaped deformation
in each of said shiftable members engageable
with said shaft, a slot closing plate and a pivotal
45 connection between said slot closing plate "and
each of said angularly shiftable members where
by movement of the shaft in engagement with
the cam shaped deformations in said angularly
shiftable members effects a movement of said
50 slot closing plate with respect to the long nar
row slot, and a stop carried by each of said
25
17. In combination, a member formed with a
relatively long and narrow closed slot, a shaft
a slot closing plate, and means connected with
plate and actuated by said shaft in moving
and out of the limiting positions thereof in
slot for respectively closing and opening said
by said plate, said means being operative
to move said plate with a component of motion
normal to said slot substantially equal‘ to the 35
width of said slot.
18. In combination, a member formed with a
relatively long and narrow closed slot, a shaft
extending through and shiftable along said slot,
a slot closing plate, and means connected with
said plate and actuated by said shaft in moving
into and out of the limiting positions thereof in
said slot for respectively closing and opening said
slot by said plate, said means being operative
to move said plate with a component of motion 45
normal to said slot substantially equal to the
width of said slot and a component of motion
parallel to said slot at least equal to the thick
ness of said shaft.
LEO C. LUKE.
50
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