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Патент USA US2128531

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Aug. 30, 1938.
1-. M. HAGENBOOK
> 2,128,531
REVOLVING DOOR SPEED CONTROL
‘ Filed July 18, 1955
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INVEN TOR.
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BY
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ATTORNEY
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Aug. 30, 1938.
2,128,531
T; M. HAGENBOOK
REVOLVING DOOR SPEED CONTROL
Filed July 18, 1935
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BY
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Aug- 30, 1933-
T. M. HAGENBOOK’
2,128,531
REVOLVING DOOR SPEED CONTROL
Filed July 13, 1955'
5 Sheets-Sheet s
INVENTOR.
005:
ATTORNEY
.
I
Aug. 30, 1938.
T. M._ HAGENBOOK
2,128,531
’ REVOLVING DOOR SPEED CONTROL
Filed July 18, 1935
5 Sheets-Sheet 4
INVEN TOR.
'
RNEY.'7
2,128,53l
Patented Aug. 30, 1938
UHTED STATES PATENT OFFI€E
2,128,531
REVOLVING DOOR SPEED‘ CONTROL
Thurloe M. Hagenbook, Evansville, Ind., assignor
to International Door Company, Evansville,
Ind., a corporation of Illinois
Application July 18, 1935, Serial No. 32,125
7 Claims.
(CI. 20-18)
My invention relates broadly to revolving doors
and more particularly to a construction of revolv
ing door speed control mechanism, and asso
ciated mounting means therefor.
5
One of the objects of my invention is to provide
a compact arrangement of trolley and. speed con- ‘
trol mechanism for revolving doors.
Another object of my invention is to provide
.a mounting means for journaling the upper end
10 of the rotary shaft of a revolving door and con
trolling the speed of rotation thereof.
Still another object of my invention is to pro
vide a construction of trolley and speed control
mechanism for revolving doors wherein the speed
15 control mechanism is housed within a casing
which does not exceed in vertical dimension the
limits of height of the means for locking the
trolley in central position.
A further object of my invention is to provide
:20 a speed control mechanism directly geared with
{30
‘rotary means connected with the revolvable shaft
of a revolving door, having means for limiting
the speed of rotation of the revolving door and
:subjecting the revolving door to a braking action
under conditions of excessive deceleration of the
revolving door.
A still. further object of my invention is to
provide a construction of speed control mecha
nism for revolving shafts which includes a shift
able friction disc coacting with an adjacent fric
tion member and controllable by a plurality of
centrifugally displaceable members operating to
effect an engagement between the friction disc
and coacting friction member under conditions
35 of either excessive acceleration or excessive .de
celeration.
Still another object of my invention is to pro
vide a centrifugal control mechanism in which
a ?ywheel carries a multiplicity of pivotally
I, 4.0 mounted weights adapted to move under condi
tions of excessive speed to effect engagement of
a'friction brake, and to insure an effective brak
side in a construction of combined trolley and
speed control mechanism for revolving doors, as
set forth more fully in the speci?cation herein
after following by reference to the accompany~
ing drawings in which:
‘
Figure 1 is a plan view of the combined trolley
and speed control mechanism of 'my invention;
Fig. 2 is a vertical sectional view through the
combined trolley and speed control mechanism
of my invention, certain of the parts being shown 10
in elevation; Fig. 3 is a vertical sectional view
taken through the combined trolley and speed
control mechanism of my invention on line 3—3
of Fig. 1; Fig. 4 is a lateral sectional view taken
through the combined trolley and speed control 15
mechanism of my invention on line é-Jl of Fig;
3; Fig. 5 is an end elevation of the combined
trolley and speed control mechanism of my in
vention; Fig. 6 is a vertical sectionalview taken
through the trolley on line 8—6 of Fig. 1; Fig. 7
is a plan view of the casing for the trolley and
speed control mechanism; Fig. 8 is a lateral cross
sectional view through the casing on line 8-8
of Fig. 7; Fig. 9 is a side elevational view of
the casing shown in Fig. 7; Fig. 10 is a fragmen
tary plan view of the ?ywheel employed in the
speed control mechanism of my invention; Fig. 11
is a cross sectional view taken through the fly
wheel on line H-ll of Fig. 10; and Fig. 12 is an
elevational view of the speed control shaft shown 30
partially in cross section.
My invention is directed to a compact assem
bly of combined trolley and speed control mech
anism mounted within a casing which is carried
upon roller members engaging rails by which the
casing may be guided to a central assembled po
sition or retracted to a position at one side of the
drum of the revolving door. The casing is pro
vided with a multiplicity of aligned extensions
which are apertured for the passage of rod mem
40
bers which support the rollers, which in turn en-‘
gage the guide rails. The casing provides a hous
ing for both the journal mechanism for the up
ing of the revolving shaft under conditions of ex-.
cessive retarding of the revolving shaft.
l per end of the shaft of the revolving door and
A further object of my invention is to provide a also the speed control mechanism. The C0111. 45
.45
construction of speed control mechanism for a struction of the speed control mechanism of my’.
revolving shaft in which a ?ywheel device carries invention is such that precision control of the
a multiplicity of radially disposed ?yweights, revolving door is secured. That is, the revolving
which are operative under conditions of centrifu
door cannot exceed a reasonably safe speed of 50
50 gal force for preventing abnormal speed of ro
tation of a revolving shaft, and operative through rotation. Moreover, in the event of abrupt decelr
a clutch and friction disc mechanism for brak
ing the revolving shaft under conditions of abrupt
arresting of the movement of the revolving shaft.
.55
Other and further objects of my invention re
eration of the door, such as would occur in the
case of accident where a person might be caught
between one of the door wings and the side wall
of the drum of the door, the speed control mecha 55
2.
2,128,531
nism responds immediately to brake the rotation
of the door.
In order to produce the braking action on the
revolving door, both under conditions of excessive
increase in speed and abrupt deceleration, I pro
respect to the asbestos brake lining 26, without
affecting the engagement or disengagement of
clutch face 'ia with clutch face 9a, under control
of the centrifugal weights 8 which are pivoted at
2'! to carrier or ?ywheel ill.
vide a construction of flywheel for the speed
The carrier Ill not only serves as a means for
control mechanism which is provided with a
pivotally mounting centrifugal weights 8 but also
plurality of radially disposed pockets within
serves in itself as a centrifugal mass or flywheel.
which separate weights are pivotally mounted
10 and free to be displaced under conditions of cen
trifugal force for actuating a brake. Rotary
movement is normally imparted to the ?ywheel
which carries the several pivotally mounted fly
weights through a geared connection with the
15 revolving door. The ?ywheel is provided with a
clutch plate having cam or ratchet shaped teeth
thereon. A friction disc is provided‘ with a sleeve
concentrically disposed about a clutch member,
through which the driven shaft extends and
which is provided with clutch or cam faces opera
tive to engage the clutch or cam faces on the
carrier.
The friction disc is arranged to enact with a
brake surface carried by the casing of the speed
The centrifugal weights act
to displace the friction disc into position for ef
fecting engagement between the friction disc and
the brake surface without the disengagement of
25 control mechanism.
the coacting clutch or ratchet faces.
Under con
30 ditions of ‘abnormal speeds the pivotally mounted
The ?ywheel I0 is provided with radially disposed
pockets 29 within which the pivotally mounted 10
weights 8 are adapted to be radially displaced
within the limits of the housing l3. The clutch
plate 9 coacts with the ?ywheel Ill and is secured
thereto by suitable connecting means indicated
generally at 91). I provide counterbalancing 15
springs 23 on opposite sides of pin 261 housed
within the bore lib of shaft H and con?ned by
means of screw plug member 25 engaging screw
threads in the upper end of bore l lb. The hous
ing I3 is supported on plate member 95 which 20
forms the upper closure member for the main
housing M ‘which is apertured at l5a for the
passage of the speed control mechanism and at
l5b for the passage of the universal joint mech
anism as will be hereinafter more fully described. 25
‘The main housing M is formed from a pressed
steel plate having welded ends. At the ends of
the main housing It, I provide welded extensions
30 which are apertured for the passage of rod
' members 2i which support rollers 22 which en-' '30
centrifugal weights are driven outwardly tending
to raise the friction disc into engagement with
the coacting brake lining for retarding the rota
metrically across the drum of the door. The
roller members 22 which engage the rails 3i may
tion of the driven shaft.
be moved from a position adjacent one side of the \
Under conditions of
gage rails 3| which extend substantially dia
abrupt arrest of movement of the revolving door,
the driven shaft is arrested in movement but the
‘drum of the door to a position substantially cen-‘
?ywheel tends to continue rotation and in so
doing produces a displacement between the coact
means "of the set screw 32 which extends through
the laterally disposed member 33 and is secured
ing clutch or ratchet faces, producing a displace
40 ment of the friction disc 'su?icient to establish
engagement with the brake surface thereby pro
ducing a braking action ‘on the revolving shaft.
The construction of the speed control mechanism
is very compact, as the vertical dimension of the
45 casing 'of the speed control mechanism does not
exceed the maximum vertical dimension of ‘the
trally of the drum and located in position by
in a selected position by means of lock nut 34 to
provide an abutment for the extension 35 which‘ 40
projects from the end of the main housing M.
In order to insure the locking of the housing 14
in a ?xed position for connection of the shaft of
the revolving door, I provide members 36 which
are secured by means ‘of bolts :37 to portions of 45
the rail system 3| with aligned recesses 36a there
locking means by which the trolley is ‘maintained ' in into which the laterally extending bar member
either in a central ‘or retracted position.
‘38 may be set. Bar member 38 is secured to
Referring to the drawings, reference character
I designates a yoke casting which supports the
bearings for the speed control shaft H and also
'co‘unte‘r'shaft 4. The bearing races supported by
the yoke l are indicated at l8. The ‘shaft ll
carries pinion gear l2 which meshes with gear 5
‘carried by c‘ountershaft 4. The main shaft 1 I
passes freely through the clutch plate 9 having
an upwardly extending clutch face indicated at
ca coacting with the complementary part of the
‘clutch 7 having downwardly depending clutch
faces la. The coacting part of the clutch 1
forms a carrier for the friction disc 6 which coacts
with the asbestos brake lining 26 carried on the
lower portion of the housing H3. The sleeve por
tion of the clutch l is slotted, as indicated at 28,
65 which slot is aligned with the elongated aperture
Na in shaft it through which the pin 24 passes
for the purpose of driving the ‘coacting part of
bracket member 39, ‘one end of which is ?xed to
the sleeve member ill! ‘which surrounds the shaft 50
21 carrying rollers 22. The fact that bar mem
ber 38 is engaged in recesses 36a insures the ?x
ing of the main housing It in a position whereby
‘the ‘shaft “M which connects with shaft 42 of the
revolving door is directly ‘centered 'over the lower‘ 55
bearing of the revolving door at the base of the
‘drum.
‘The ceiling of the drum of the revolving door
is indicated at 43 ‘and ‘it will be observed that one
half of the ‘ceiling is provided with a slot 43a
through which the upper end of tubular shaft 42
and depending end of shaft M are adapted to
pass for permitting the revolving door assembly
in collapsed position to be removed to one side
of the drum.
The shaft 4| extends through an 65
opening provided in housing M which is closed
' by
44.
>_ collar
v
Collar 44 is surrounded by annular
clutch ‘l and correspondingly ‘driving the clutch ‘ ?ller block '3 on which the annular ball race 20
face Tia and the friction disc 6. The friction disc
70 6 is pinned to the shaft H by pin 24 passing
‘through slot 28 in the coacting clutch member I.
It will be ‘observed from Fig. 2 that the slot 28
is mounted and around which the ball bearings
45 are disposed for supporting upper ball race 115 70
which, in turn, supports the main gear 2. Main
gear 12 has an upwardly extending ?anged por
allows the friction disc 6 to be raised or lowered _
tion 2a which is provided with diametrically op
through a distance substantially equal ‘to the
posite recesses 21) which serve to receive the ends
height of the coacting clutch faces la and 9a with
of stub shaft members '41 which project from ring
2,128,531
3 member 48. Concentrically within ring member
48, I provide ring member 49 which ?ts snugly
over shaft 4| and is keyed thereto by key member
50 operating in groove 4|a of shaft 4|. Ring
member 49 is provided with laterally projecting
pins 5| which enter openings 48a in ring member
48 at diametrically opposite positions with respect
to apertures 4822 which receive the pins 41.
The
nut 52 engages threads on shaft 4| and forms an
10 abutment against ring member 49 thus supporting
the entire weight of the revolving door structure.
The nut 52 is keyed to shaft 4| with ring member
49 through key 50 as heretofore described. The
main gear 2 is recessed as indicated at 20 to re
ceive the upper end of cylindrical housing 44 thus
forming a completely sealed casing through which
shaft 4| extends and allowing lubricant to be
packed around the roller bearings and gears with
in the housing'l4. A felt or other form of pack
‘20 ing may be inserted within housing 44 around
shaft 4|.
In the operation of speed control mechanism of
125
my invention, movement is imparted to the wings
of the revolving door by individuals who pass
through the door and the shaft 4| revolved.
Ring member 49 keyed to shaft 4| is correspond
ingly rotated and imparts rotary movement to
ring member 48 through pin connections 5|
therewith. Corresponding rotary movement is
imparted to main gear 2 through pin connections
4f.
Main gear 2 meshes with gear teeth on
countershaft 4 which revolves in ball bearings.
Countershaft 4 drives intermediate gear 5 which
meshes with gear teeth on sleeve l2 imparting
35 rotary movement to shaft || mounted in thrust
bearings as at |8.- For all normal conditions of
rotation, centrifugal weights 8 will not be dis
placed for a sufficient distance to shift friction
disc 6 into contact with asbestos brake lining 28. '
However, under conditions of abnormal speeds
of the revolving door, centrifugal weights 8 are
driven outwardly tending to raise friction disc 6.
The centrifugal movement continues as the speed
increases until friction disc 6 is engaged with
brake lining 26 tending to retard the rotation of
shaft H.
In the event of abrupt arrest of the movement
of the revolving door, such as might occur in
the case where an individual becomes accidentally
50 caught between one of the door wings and the
drum, main gear 2 is correspondingly arrested in
movement tending to arrest the movement of
countershaft 4, intermediate gear 5, sleeve gear
55
l2, and shaft ll. However, the carrier l0 and
plate member 9 moving at the abnormal driving
speed to which these members have been sub
jected, operate through clutch faces 9a and la to
shift friction disc 6 into engagement with asbes
tos brake lining 26 to bring the entire door struc
60 ture to an abrupt stop.
The reason for this func
tion will be understood by considering the con
struction of the coacting clutch faces 9a and ‘la.
These clutch faces are cut on an angle of ap
proximately 60° with respect to the axis of the
65 members. Under normal conditions, the clutch
member 1 constitutes the driver, clutch faces la
and 911 form an interlocking engagement, and
rotary movement is imparted to carrier l4 and
plate 9 independently of the centrifugal action
70 of weights 8 on friction disc 6.
However, upon a
reversal of the process which, in effect, occurs
when shaft H is retarded in movement, the en
ergy which has been stored in carrier l0, plate 9,
and weights 8, tends to constitute the sloping
75 faces 9a of clutch member 9 as coacting drivers
I3
‘which operate against the sloping faces la of
the coacting clutch member ' l introducing in
effect a‘cam movement tending to elevate sleeve
7 and the friction disc 6 carried thereby. This
vertically upward movement is su?icient to effect
an engagement between friction disc 5 and the
asbestos brake lining 26 thus arresting‘movement
of shaft M. It will be observed that the mech
anism of my invention functions not only to avoid
racing of the revolving door, but to arrest move '10
'ment of the revolving door under condition of
obstruction. I have found the mechanism very
effective for preventing pinching between the
revolving door wingand'the drum thus increasing
the safety of the installation.
'
While I have described my invention in certain
of its preferred embodiments, I desire that it be
understood that modi?cations may be made and
that no limitations-upon my invention are in
tended other than are imposed by the scope of 20
the appended claims.
What I claim as new and desire to secure by
Letters Patent of the United States is as follows:
1. A combined trolley and speed control mech
anism for revolving doors comprising a boX-like;.,25
casing open at the top thereof, rollermembers
supporting said casing. with respect to an adja
cent rail system, a thrust bearing carried by
the bottom of said box-like casing adjacent one
end thereof, means for journaling the‘ upper‘ endr-BO
of the shaft of a revolving door for universal
movement with respect to said thrust bearing, a
gear train support carried by the bottom of said
box-like casing ‘adjacent the opposite end there
of, a gear train carried by said gear train sup~ 35
port, a gear carried by said thrust bearing and
interconnecting the upper end of the shaft of
the revolving door with the said gear train, a
driven shaft projecting from said gear train sup
port to a position above said box-like casing, 40
speed control mechanism mounted on the pro
jecting portion of said driven shaft, and a clo
sure for said box-like casing and said speed con
trol mechansm.
2. Acombined trolley and speed control mech 45
anism for revolving doors comprising‘ in combina
tion with the rotatable shaft of a revolving door,
a box-likecasing, roller members supporting said
box-like casing with respect to a set of guide
rails disposed adjacent thereto, a thrust bearing 50
carried by and adjacent one end of said box-like
casing for journaling the said shaft, means for
providing universal movement between said shaft
and said thrust bearing, a gear carried by said
thrust bearing and .driven by the revolving door 55
shaft, a speed control mechanism mounted on
and adjacent the other end of said box-like cas
ing, a gear support mounted in said box-like cas
ing and forming a journal for said speed control
mechanism, and a set of gears mounted in said
gear support and interconnecting said speed con
trol mechanism and said aforementioned gear.
3. In a combined trolley and speed control
mechanism for revolving doors, a box-like casing,
roller members mounted in said casing for sup 65
porting said casing with respect to a pair of ad
jacent rails, a revolving door shaft extending into
said box-like casing,
a thrust bearing for jour- .
naling said revolving door shaft, a gear carried
by said thrust bearing in connection with said 70
'
revolving door shaft,, a yoke shaped member
mounted in the opposite end of said box-like cas
ing, a shaft member journaled in said ‘yoke
shaped member, a gear carried by said shaft
member, a set of gears journaled in said yoke 75
4
‘2,128,531
shaped member and interconnecting said last
mentioned gear with said first mentioned gear,
and a speed control mechanism connected with
said shaft member.
Li. A combined trolley and speed control mech
anism for revolving doors comprising in combi
nation with the shaft of a revolving door, a box
like casing, a thrust bearing disposed adjacent
one end of said casing, for means for mounting
10 said revolving door shaft for universal movement
with respect to said thrust bearing, a closure for
said casing, a frame member mounted adjacent
the opposite end of said casing, a system of gears
journaled in said frame member, a gear carried
by
said thrust bearing in connection with said re
15
volving door shaft and meshing with said system
of gears, a speed control mechanism mounted
within said closure, and a shaft member inter
connecting said speed control mechanism with
20 said system of gears in said frame member.
5. A combined trolley and speed control mech
anism for revolving doors comprising in combina
25
tion with the shaft of a revolving door, a box-like
casing, a thrust bearing disposed adjacent one
end of said casing, means for mounting said re
volving door shaft for universal movement with
respect to said thrust bearing, a. closure for said
casing, a frame member mounted adjacent the
opposite end of said casing, a system of gears
30 journaled in said frame member, a gear carried
by said thrust bearing in connection with said
revolving door shaft and meshing with said sys
tem of gears, a speed control mechanism mounted
Within said closure, and a shaft member inter
connecting said speed control mechanism with
said system of gears in said frame member, said
revolving door shaft being universally movable
with respect to said casing whereby said casing
enclosing said speed control mechanism may be
rigidly mounted for uniform operation of said
10
speed control mechanism.
6. In a trolley for revolving doors, a carrier dis
posed in ?xed relation to the floor, means for
mounting the shaft of a revolving door between
said carrier and the floor for universal move 15
ment with respect to said carrier, and speed con
trol mechanism mounted in ?xed relation to said
carrier and operatively connected with said re
volving door shaft.
'
7. In a trolley for revolving doors, a carrier, 20
means for mounting the shaft of a revolving
door for universal movement with respect to said
carrier, speed control mechanism mounted in
?xed relation to said carrier and operatively con
nected with said revolving door shaft, and latch
ing means for said carrier pivotally mounted on
said carrier and adapted to be controlled by
means extending axially of said revolving door
shaft.
30
THURLOE M. HAGENBOOK.
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