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Патент USA US2111773

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March 22, 1938.
"r. M. HAGENBOOK -
‘2,111,773
LOWER JOURNAL FOR REVOLVING DOORS
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Filed Dec. 1l, 1936
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2,111,773
Patented Mar. 22, 1938
UNITEH stars
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2,111,773
LOWER' JOURNAL For. nnvotvina noons
îl‘hurloe M. Hagenbook, llivansville,` 1nd., assign
or to International Door Company, Evans
ville, Ind., a corporation of Illinois
Application December 11, 1936, Serial No. 115,431
15 Claims.
My invention relates broadly to revolving doors vertical sectional view taken through the lower
and more particularly to a construction of lower
journal for revolving doors.
's
l
journal or the revolving door and illustrating the
journal in retracted position for permitting the
shifting of the collapsed wings of the revolving
One of the objects of my invention is to pro
door to one side of the‘revolving door drum or
vide a construction of lower journal for revolv
ing doors in which the retraction and projection housing, certain of the parts being illustrated in
o-f the journaling means for the revolving door ' side elevation; Fig, 3 is an enlarged cross sec
may be readily accomplished for allowing the tional view of the lower end of the shaft structure
revolving doors to be collapsed and shifted of the revolving door and illustrating a portion
against the side ci the drum or housing of the of the retractible and projectible pintle in side 10
revolving door and readily restored to normal elevation and showing lthe structure by which
seepage oi dust and dirt into the journal housing
revolving position.
Another object of my invention is to provide a is obstructed; Fig. 4 is a transverse sectional View
taken on line d-fl of Fig. 1; Fig. 5 is a side ele
simplified construction of lower journal for re
volving doors by which deleterious effects of dirt, vational view partially broken away and illus 15
rated in cross section and showing the pro
grit and the like, upon the moving parts of the
jectible. and retractible pintle employed in the
revolving door journal are substantially elimi
nated by constructing the lower journal in such
manner that entry of dirt, grit and the like, is
2 O substantially obstructed.
A further object of my invention is to provide a
simpliñed construction of self-oiling lower jour
parted to the pintle for effecting retraction or
projection thereof; Fig.f7 is a vertical sectional
nal for the lower portion of a revolving door hav
ing means for enclosing the moving parts of the
journal in a substantially dust and dirt tight
25
housing for protecting the journal against seep
door in the -.construction of my invention; and 25
Fig. 8 illustrates partially in side elevation and
age oi dust, grit and the like.
`
Y
'
A still further object of my invention is to pro
vide a'construction of retractible and projectible
30 journal `for revolving ydoors including an anti
friction thrust bearing adapted to receive the
thrust of the hold-down spring.
Another object of my invention is to provide a
simplified construction of anti-friction thrust
bearing for journaling'the lower portion of a re
volving door in which the anti-friction thrust
bearing is enclosed in a substantially dust and
dirt tight housing adjacent the base of the cen
tral shaft of the revolving door while beingl free
for retraction or projection for allowing the shift
ing of the collapsed revolving door wings `to a
position adjacent one side of the revolving door
drum or housing or the journaling of the doors
in revolving position.
.45
Other and further objects of my invention re
side in the construction of lower journal forre
volving doors as set forth in the specification
hereinafter following by reference to the accom
panying drawing in which:
50
Figure 1 is a vertical sectional view taken
through the lower journal of the revolving door
with certain of the parts illustrated in side ele
vation and showing the journal in projected posi
tion for rotation of the revolving door wings
within the revolving door housing; Fig. 2 is a
construction of my invention; Fig. 6 is a vertical
sectional view taken through the vertically shift
able control member by‘which movement is im
20
view showing the cylindrical sleeve employedad
jacent the base of the shaft of the revolving
partially in cross section the internal concentric
sleeve which surrounds the 'rctractible and‘ pro
jectible pintle in -theconstruction of my inven
tion.
.
.
,
.
v30
v My invention is directed to a simplified con
struction of lower journal for’ revolving doors
which is relatively inexpensive in production and
which may be readily assembled. My invention
provides for substantially enclosing the thrust 35
bearing on which a revolving door is mounted
and preventing the seeping of dust and grit into
the thrust bearing by providing a serpentine ob
structive path for the seepage of dust and grit
to the bearing, A minimum number of parts are 40
required for substantially enclosing the thrust
bearing in a substantially dust and dirt tight
housing, thereby rendering the structure of my
invention simple and yet highly effective. It will
be understood that the principles of my invention 45
may be embodied in various forms and that de
tails are not material. The present embodiment
of the invention, therefore, is to be considered as
merely indicative. The form illustrated in the
drawing and hereinafter described in detail has 50
been found to be one of the practical embodi
ments and capable of eiiicient operation and
practical in construction.
Referring to the drawing in Vincre detail, ref
erence character l designates two of the oppo
55
2
2,111,773
sitely projecting revolving door wings having
their inner longitudinally extending edges sub
stantially abutting the exterior wall of the hous
ing 2. The housing 2 substantially encloses the
tubular shaft 3 of the revolving door. The door
has been foreshortened and a showing of the
wing hangers omitted for purposes of simplifica
tion. A sleeve member 4 is provided in the lower
end of the housing 2 and snugly ñts therein for
10 substantially preventing the entry of dust, dirt,
grit and the like into the lower end of the
housing 2. The sleeve member 4 is provided
with a shoulder 5 adjacent its upper extremity.
The upper end of the sleeve member 4 is provided
15 with an aperture or reduced section which is
internally screw threaded as indicated at 6. The
lower end of sleeve member 4 is recessed to pro
vide an internal annular seat or shoulder 1. The
recess in the end of sleeve member 4 is internal
20 ly screw threaded as indicated at 8. The tubular
central shaft 3 is provided with screw threads
9 on the end thereof, .adapted to engage the
internal screw threads 6 in the upper end of
sleeve member 4.
An internal concentric sleeve Iû is disposed
within sleeve member 4 on the pintle 20, which
is slidably and non-rotatively movable with re
spect thereto. The internal concentric sleeve IIJ
has an annular flange II thereon which engages
30 over the lower end of a bushing I4. Bushing I4
serves as a packing means between sleeve member
4 and internal concentric sleeve I Il and is con
structed from self-oiling bronze.
adapted to receive the self-oiling bronze disc
washer I5 and the gasket I 6 in super-imposed
relation as shown more particularly in Fig. 3.
The gasket I6 is provided with a central thick
ened portion I6a serving as a seal with respect
The
pintle 20 has a longitudinally extending keyway
26a therein adapted to be aligned with a corre
sponding keyway Illa in the internal concentric
sleeve I6 for receiving the key 2I by which a
positive lock is provided between the pintle 20
and the internal concentric sleeve I 6 while al
lowing retraction or projection of the pintle 2U.
The self-oiling bronze disc washer I5 and
gasket I6 are retained in position by means of
50 the screw threaded end plate I1. The end plate
ll has external screw threads I8 thereon adapted
to engage the internal screw threads 8 in the
recess in the end of sleeve member 4. Sockets
I9 are provided in the lower face of end plate
55 Il for facilitating the insertionor removal of end
plate I'l. The end plate Il has a central cham
fered portion I'Ia adapted to receive the central
thickened portion Ißa of gasket I6 for insuring
a relatively tight seal around pintle 2E! and ob
structing the seepage of dirt, dust, grit and the
like toward the housing which encloses the thrust
bearing.
Dirt, grit, etc., are prevented from en
packing washer or gasket I6, and also by reason
of the serpentine path through the end and ro
tary bearings and around the flange II. This
lower bearing assembly in combination with an
upper sleeve bearing 36, hereinafter more fully
described, serves to stabilize the operation of
the revolving door about the pintle 2i), with a
minimum of wear in the bearings due to the 10
provisions of my invention, and with resulting
long life for the bearings.
The lower end of pintle Z0 is provided with a
frusto-conical terminus which is slotted as indi
cated at 22 allowing the terminus to be received 15
in the frusto-conical seat 23 which is suitably
Supported in the base or floor over which the
revolving door operates. A diametrically extend
ing member 23a serves as a means for retaining
the pintle in a fixed position when the pintle is 20
lowered into the seat 23.
The upper end of pintle 2l) is provided with
an extension 24 of reduced, section having a
screw threaded recess 25 in the upper end there
of for receiving the end of the headed screw 25
threaded stud 26 which extends through the
internal cylindrical recess 2l in coupling member
23 and through the bore 29 extending therefrom,
through upper thrust bearing ball race plate 30
through the lower thrust bearing ball race plate 30
3l and into the screw threaded socket 25 in the
upper end of the extension 24 on pintle 2U. The
headed screw threaded stud 2li serves as a con
The recessed end of the sleeve member 4 is
40 to the cylindrical Walls of the pintle 2B.
tively.
tering these bearing members primarily by the
.
It will be noted that the flange II on the con
centric sleeve has an outer diameter substan
tially less than the inner diameter of the sleeve
member 4, and that the length of the internal
sleeve l0 is substantially shorter than the length
of the smooth inner bore of the sleeve member 4,
so that the sleeve II) will not bind in the sleeve
member 4 or against shaft 3, upon the tighten
ing of end plate I'I. On the contrary, the sleeve
member 4 is free to rotate with respect to the
sleeve I0 with a minimum of wear because of
the self-oiling bushings I4 and I5 which consti
75 tute rotary and end bearing members, respec
necting means between coupling member 28 and
the extension 24 of pintle 23 for -allowing a lon 35
gitudinal force imparted through coupling mem
ber 28 to be communicated to pintle 29 so that
pintle 20 may be projected or retracted while
the door is free to revolve.
I provide a set of
ball bearings 32 between the upper and lower 40
thrust bearing ball bearing race plates 30 and 3I.
The ball bearings 32 provide an anti-friction
surface against which the thrust of spring 42
is effective.
The coupling member 23 has the cylindrically 45
recessed end thereof arranged to receive the end
of the link member 33 which extends longitudi
nally through the tubular central shaft 3. The
juncture formed by the entry of link 33 into the
cylindrically recessed end of coupling member 50
28 provides a shoulder 34 on which gasket mem
ber 35 is arranged to seat. Gasket member 35
has an inner bore ñtting snugly with respect to
the external cylindrical surface of link 33, The
external cylindrical periphery of the gasket 35 55
conforms snugly with the internal diameter of
tubular central shaft
The lowermost limit of
gasket 35 is the shoulder 34 formed by the junc
ture of coupling member 28 and link member 33.
The gasket 35 substantially obstructs the passage 60
of dust, dirt, or other deleterious matter down
wardly and into the housing within which the
thrust bearing is confined. As has already been
explained, dust, dirt, foreign matter, and other
deleterious material is prevented from reaching 65
the thrust bearing from below because of the
serpentine passage through which such matter
would have to pass because of the construction of
the journal at the base of the revolving door.
To further guard against the seepage of dust, 70
dirt or other deleterious matter into the thrust
bearing, I provide a cylindrical sleeve 3S con
structed from self-oiling bronze and secured to
the extension 24 of the pintle 2B and disposed
within the tubular central shaft 3 in a position 75
2,111,773
normally just below the ball races which con
fine the ball bearings 32. When the pintle 20 is
in retracted position the sleeve 35 moves with the
pintle substantially protecting the thrust bear
ing within its enclosure as heretofore described.
As the link 33 is shifted upwardly, gasket 35 is
correspondingly moved as the outer cylindrical
periphery of gasket 35 is free to slide with re
spect to the inner wall of the tubular central
10 shaft t thus protecting the thrust bearing within
its housing as described.
The lower end of link 33 is secured in the upper
end of the cylindrical recess 2l in coupling mem
ber 23 by suitable means such as diametrically
15 extending rivet or pin 3l. The upper end of link
33 fits into cylindrical socket 35 in the lower
portion of vertically shiftable or slidable mem
ber 39. The socket is provided with elongated
slots lill in diametrically opposite positions in the
20 side walls of the recessed portion 38.
A trans
versely extending pin 4l, secured in the upper
end of link Sit passes through the Slots 40 thus
preventing relative rotation between link mem
ber 33 and slidable member 39 while allowing a
25 limited amount of lost motion between the link
33 and the slidable member 39. A coil spring 42
is mounted in recess 38 and is effective against
the upper end of link member Se for normally
holding the end 22 of pintle 29 in socket 23 in
30 the foundation or base support for the revolving
door.
'I‘he shiftable or slidable member 39 is provided
with means for loclnng the shiftable member in
either of two limiting positions. The slidable or
35 shiftable member 39 is provided adjacent its
upper extremity with a laterally extending cylin
drical recess 43 adapted to receive a sleeve mem
ber or liner 44 within which coil spring 45 is op
erative to normally eject detent 45 having a head
40 and flange 4l’ thereon by which either aperture
48 or 49 in cylindrical housing 2 may be engaged
for locking slidable member 3S) in either of two
positions.
The spring operated detent is pro
vided with an oil passage extending into the
45 housing which surrounds the detent as indicated
at 55. The lsleeve 44 projects from the side o-f
slidable member 39 and through the longitudi
nally extending slot 5l in one wall of the tubular
central shaft It as shown. The shiftable member
50 39 is also provided with a finger grip 52 which is
relatively narrow in section and which extends
through slot 5l in the tubular central shaft 3
and also through the slot 53 in the housing 2
so that the finger grip 52 is free to be shifted
55 vertically within such limits as will permit the re
traction or projection of the pintle. The linger
grip 52 is secured to the shiftable member 39 in
any desired manner such as by way of screw
member 54 which passes through the aperture 55
60 in the shiftable member 39'.
i
À
Thus it will be seen thatV manipulation of the
finger grip 52 in an upward direction serves to
retract pintle 2li because transverse pin 4i of
link 33 is engaged in the end limits of slots 40
65 and the force communicated through link 33 to
coupling member 23 and through the headed
screw threaded stud ‘it to the upper extension 24
of pintle 2E), allowing the pintle to be retracted
in the position illustrated in Fig. 2 and the re
volving door wings collapsed and the collapsed
door moved to. one side of the door drum or hous
ing. The pintle is latched at the retracted posi
tion byfthe engagement of the end detent 46 in
aperture 4B. When the revolving door wings
have been restored to the central position within
3
the doordrum or housing, pintle 25 is ready to
be projected and can be projected by downward
movement of finger grip 52 and the shifting of
detent 46 into aperture 49, the force being com
municated through link 33, coupling member 28,
stud 26 to the upper extension 24 of the pintle
to the lower end 2U of the pintle. Sufficient lost
motion is provided to allow proper adjustment
of the headed end of stud 26 in cylindrical recess
2l in the upper end of coupling member 23. The
retraction and projection steps heretofore ex
plained are carried out while a relatively tight
seal is maintained at all times in the lower end
of the journal as heretofore described in con
nection with Fig. 3. The self-oiling characteris 15
tics of the sleeve 36, bushing I4 and washer i5
are such that lubrication of the lower journal
becomes unnecessary. The serpentine path to
the thrust bearing is such that dust, dirt and
foreign matter is substantially excluded from the 20
bearing and long useful life of the bearing as
sured.
While I have described my invention in one of
its preferred embodiments, I desire that it be
understood that modifications may be made and 25
that no limitations upon my invention are in
tended other than may be imposed by the scope
of the appended claims.
What I claim as new and desire to secure by
Letters Patent of the United States is as follows:
1. Mounting means for revolving doors com
prising in combination with a tubular shaft, a
projectible and retractible pintle in the end of said
tubular shaft, a thrust bearing for rotatably
journaling the revolving doors with respect to the
pintle, and a labyrinth packing device mounted
on the said end of said shaft and surrounding
said pintlel for preventing the seepage of dust,
grit and the like into said thrust bearing.
2. Mounting means for revolving doors com
prising in combination with a tubular shaft, a
projectible and retractible pintle in the end of
said tubular shaft, a thrust bearing for rotatably
journaling the revolving doors with respect to the
pintle, and a set of concentric sleeve members Y
disposed between said shaft and said pintle and
having the outermost one thereof fixed to said
shaft and the innermost one surrounding said
pintle, the said sleeve members being interñtted
to prevent direct entry of dust, grit and the like
into the thrust bearing except through a serpen- y
tine path.
3. Mounting means for revolving doors com
prising in combination with a tubular shaft, a
control shaft extending through said tubular 55
shaft, a pintle longitudinally shiftable within said
tubular shaft, a thrust bearing disposed between
said control shaft and said pintle, and means for
substantially enclosing said thrust bearing within
a portion of the tubular shaft, comprising pack
60
ing means between said control shaft and said
tubular shaft and a multiplicity of telescopically
arranged sleeve members disposed between said
tubular shaft and said pintle and having the
outermost one thereof fixed to said shaft and the 65
innermost one surrounding said pintle, the said
sleeve members being interfltted to obstruct en~
try of dust, grit and the like into the thrust bear'-Y
ing while allowing projection and retraction of
70
said pintle.
4. Mounting means for revolving doors- corn~
prising in combination with a tubular shaft, a
control shaft extending through said tubular
shaft, a pintle projectible and retractible through
the end of said tubular shaft, a thrust bearing 75
4
2,111,773
disposed between said pintle and said control
shaft, and means carried by said tubular shaft
and establishing frictional inter-connection with
and having an outer diameter equal to the inner
diameter of said tubular housing, a multiplicity of
the exterior wall of said pintle, said means com
sleeve member, means for keying one of said
prising a multiplicity of concentrically arranged
sleeve members operating to obstruct the direct
entry of dust, dirt, grit and the like into the
thrust bearing.
5. Mounting means for revolving doors- com
prising in combination with'a tubular shaft, a
pintle projectible and retractible through the end
of said tubular shaft, a control member shiftable
to either of two limiting positions through said
tubular shaft, a thrust bearing disposed between
15 said control member and the upper end of said
pintle, a gasket member disposed about said con
trol member and fitting slidably within sai-d tu
bular shaft, and means carried by the end of said
tubular shaft and operating as a seal with re
20 spect to said pintle, said gasket and said means
substantially preventing the seepage of dust into
said thrust bearing.
6. Mounting means for revolving doors com
prising in combination with a tubular shaft, a
25 pintle projectible and retractible through the end
of said tubular shaft, a control member shift'able
to either of two limiting positions through said
tubular shaft, a thrust bearing disposed between
said control member and the upper end of said
30 pintle, a -gasket member disposed about said con
trol member and fitting slidably within said tubu
lar shaft, a cylindrical sleeve member carried by
the end of said tubular shaft, a plurality of con
centric bushings disposed within said sleeve mem
35 ber, one of said.` bushings being slidably and non
rotatively mounted with respect to said pintle, and
means engaging the end of said sleeve member
for maintaining said bushings in position with
respect to said pintle, whereby said thrust bear
V40 ing is substantially protected against the entry
of dust while allowing said pintle to be projected
and retracted.
7. Mounting means for revolving doors corn
prising in combination with a tubular shaft, a
45 tubular housing concentrically disposed about
said shaft, a pintle projectible and retractible
through the end of said tubular shaft, a control
member shiftable to either of two limiting posi
tions through said tubular shaft, a thrust bear
50 ing disposed between said control member and
the upper end of said pintle, a gasket member dis
posed about said control member and ñtting slid
ably within said tubular shaft, a cylindrical sleeve
member carried by the end of said tubular shaft
55 and having an outer diameter equal to the inner
diameter of said tubular housing, a multiplicity
of concentrically disposed bushings within said
sleeve member, means for keying one of said
bushings with respect to said pintle for allow
60 ing projection or retractio-n of said pintle in a
concentrically disposed bushings within said
bushings with respect to said pintle for allowing
projection or retraction of said pintle in a prede
termined vertical plane, and means for confining
said bushings within said sleeve member, said
last mentioned means including a sealing gasket
establishing an annular sealing Zone about said
pintle. '
9. A lower journal for revolving doors com
prising in combination with a tubular shaft, a
pintle projectible and retractible through the end
of the tubular shaft, a sleeve carried adjacent to
the upper end of said pintle and slidable within
the cylindrical walls of said tubular shaft, and a
self-oiling bushing mounted on the said end of
said shaft and engaged with said pintle for jour
naling said tubular shaft with respect to the lower 20
end of said pintle.
10. A lower journal for revolving doors com
prising in combination with a tubular shaft, a
tubular housing concentrically disposed about
said shaft, a pintle‘projectible and retractible 25
through the end of said tubular shaft, said pintle
having an upper portion of reduced section, a
self-oiling sleeve carried by the reduced section
of said pintle and slidable interiorly of said tub
ular shaft, and a plurality of concentrically dis
posed sleeve members mounted adjacent the low
er end of said tubular shaft and filling the space
between said tubular shaft and said tubular hous
ing and surrounding the projectible and retract
ible pintle, the outermost of one of Said sleeve
members being carried by said shaft and rotatable
with respect to said pintle.
il. A lower journal for revolving doors com
prising in combination with a tubular shaft, a
pintle projectible and retractible through the end 40
of said shaft, a cylindrical sleeve member carried
by the end of said shaft, a plurality of concentric
bushings disposed within said sleeve member, one
of said bushings being slidably and non-rotatively
mounted with respect to said pintle, and means
engaging the end of said sleeve member for main
taining said bushings in position.
l2. A lower journal for revolving doors as
set forth in claim ll and wherein said means in
cludes a sealing gasket establishing an annular
sealing zone about said pintle.
13. A lower journal for revolving doors as set
forth in claim 11, and wherein said means in
cludes a self-oiling disc washer disposed in abut
ment with. at least the bushing which is non-ro- .
tatively mounted with respect to said pintle.
14. A lower journal for revolving doors as set
forth is claim l1, and wherein another of said
plurality of bushings constitutes a self-oiling
bearing member for facilitating rotary movement
60
predetermined vertical plane, and means secured of said shaft with respect to said pintle.
in the end of said sleeve member for confining
15. A lower journal for revolving doors com
said bushings within said sleeve member.
prising in combination with a shaft, a pintle, a
8. Mounting means for revolving doors com Y cylindrical sleeve member carried by said shaft,
a bushing having a flange thereon at its lower end
65 prising in combination with a tubular shaft, a
tubular housing concentrically disposed about slidably and non-rotatively mounted with re
said shaft, a pintle projectible and retractible spect to said pintle, a seif-oiling cylindrical bush
through the end o-f said tubular shaft, a control ing disposed between said sleeve member and the
member shiftable to either of two limiting posi
aforesaid bushing above the said ñange thereon,
70 tions through said 'tubular shaft, a thrust bear
a self-oiling disc washer carried by said pintle be
ing disposed between said control member and neath said flange, and means carried by said 70
the upper end of said pintle, a gasket member dis
sleeve member for supporting said Washer and
posed about said control member and fitting slid
said bushings in position.
~
ably within said tubular shaft, a cylindrical sleeve
75 member carried by the end of said tubular shaft
THURLOE M. HAGENBOOK. 75
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