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Патент USA US2066937

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Jan. 5, 1937.
H_ 11 JAMES
2,066,937
ELEVATOR SIGNAL AND CONTROL SYSTEM
Filed Aug. 24, 1954
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Jan. 5, 1937.
2,066,937
H. D. JAMES
ELEVATOR ‘SIGNAL AND CONTROL SYSTEM
Filed Aug’. 24, 1934
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Patented Jan. 5, 1937
2,066,937
UNITED STATES PATENT OFFIQE
2,066,937
ELEVATOR SIGNAL AND CONTROL
SYSTEM
'
Henry D. James, Edgewood, Pa., assignor to
Westinghouse Electric & Manufacturing Com
pany, East Pittsburgh, Pa., a corporation of
Pennsylvania
Application August 24, 1934, Serial No. 741,218
16 Claims. (Cl. 177--336)
My invention relates to signal and control sys
tems for elevators, and more particularly to
signal and control systems for operating a bank
Fig. 3 comprises a diagrammatic representa
tion, in what is known as the straight-line style,
of the signal and control system employed in
of elevator cars.
operating one of the cars shown in Fig. 1, and
One object of my invention is to provide a
signal and control system which will promote
the answering of calls and the loading and un
loading of passengers in the most prompt and
Fig. 3A comprises an explanatory illustration
of the relays embodied in Fig. 3.
The relays in Fig. 3A are arranged with their
coils and contact members disposed in horizon
efficient manner.
tal alinement with their positions in the straight
line circuits of Fig. 3, so that the reader may 10
Another object of my invention is to cause the
stopping of any car to take on a prospective
passenger to be directly responsive to the action
of the passenger in pressing a button to make
the car stop.
15
A further object is to provide a system in
which the nearest car approaching a floor will
10
2
light its iloor lantern at its hatchway door for
the direction in which it is running to indicate
to intending passengers that, if they wish that
car to stop for them, they should press the stop
button beside the hatchway door for that car.
A still further object is to provide an elevator
system by which an intending passenger will
know at once the elevator door for the next ap
proaching
car so that he may immediately go
2
to that door, press the car stopping button there
at, and be ready to step on the car as soon as the
door opens when the car stops.
Another object is to provide a system in which
3 O each car has its own ?oor lanterns and its own
push-buttons beside its own hatchway doors, and
the nearest approaching car will automatically
light its floor lantern and render the push-but
ton at its hatchway door effective for operation.
3
so that if the button beside a hatchway door is
pressed while the ?oor lantern beside that hatch
way door is lighted, it will cause the approaching
car to stop‘ at that ?oor when it arrives thereat.
It is also an object of my invention to provide
40 for illuminating the threshold plate at the en
trance to a hatchway door after the car stop
button at that hatchway door has been made
effective and has been operated to stop the car
approaching that hatchway door.
For a better understanding of the invention,
45
reference may be had to the accompanying
drawings in which:
Figure l. is a diagrammatic representation of
an elevator installation of a bank or group of
cars embodying my improved signal and con
5.5
trol system.
Fig. 2 illustrates a suitable arrangement of
the contact segments and contact brushes for
the floor selectors included in the apparatus for
operating the cars shown in Fig. 1.
readily determine the identification of any re
lay, the number and kind of its contact mem
bers, and the position of its coil and its contact
members in the “straight-line” circuits. For
convenience in reading the drawings, Fig. 3A 15
should be placed beside Fig. 3.
For convenience, the main relays included in
the system are designated as follows:
C=Stop pushbuttons in car.
CC=Holding coilslior stop buttons on car.
20
D=Down direction switch in car.
E=Decelerating inductor relay.
F: Stopping inductor relay.
G: Inductor‘ maintaining relay.
H=Inductor restoring relay.
25
J =Stop buttons at floor landings.
K=Illuminating threshold lamps.
L: Floor lanterns or lamps.
M: Start buttons in car.
NzBypass relay.
30
R=Registering relays for holding stop calls
on floor buttons.
T: Stopping relay.
U=Up direction switch.
V= High speed relay.
W=Up direction preference relay.
X=Down direction preference relay.
35
In connection with the reference characters
applied to the relays, it may be noted that the
letters “U” and “D” indicate up and down di
4-0
rection, the pre?x numerals indicate the floors
and the su?ix numerals indicate the contact‘
members of the relays. For instance, 3R indi
cates the registering relay at the third floor
and 3Rl indicates one pair of contact members 45
operated by that relay.
Referring more particularly to the drawings,
I have illustrated an elevator installation em
bodying a bank of two cars A and B for serv
ing ?ve ?oors or landings. The cars are indi
50
cated 'as suitably suspended by hoisting cables
H and I2 which pass over hoisting drums l3 and
M to suitable counterweights l5 and 16, re
spectively.
Although I have illustrated only two cars and 55
2
2,066,937
a signal and control system therefor as applied
to only ?ve floors, it is to be understood that the
system is equally applicable to any desired num
ber of cars operating past any number of floors.
Referring to the control system for car A as
shown in Fig. 3, the hoisting drum I3 is directly
coupled to an armature l‘! of a suitable hoisting
motor l8, the ?eld winding IQ of which is con
nected, for constant voltage energization, to a
10 source of supply designated by the supply con
ductors L+l and L-l.
A variable voltage system of control may’ be
provided for operating the hoisting motor l8
wherein the armature I1 is connected in a closed
15 circuit with the armature 2| of‘ a generator 22.
The generator is provided with a separately ex
cited ?eld winding 23 and a cumulative series
?eld winding 24. A resistor r is connected. in the
circuit of separately excited ?eld winding 23. for
20 controlling the speed of the generator.
The
armature 2l of the generator may be driven by
any suitable motor (not shown).
A brake 5 operated by a brake magnet 6 is
provided for applying a braking e?ect to the}
25 hoisting drum l3 when the car is to be brought
to a stop, the brake magnet 6 being energized
to release the brake 5 when the car is running
and being deenergized to apply the brake when
the supply of power to the car is cut off.
30
The direction and speed of the hoisting motor
I8 may be suitably controlled by controlling the
direction and value of the excitation current that
is supplied to the separately excited ?eld winding
23 of the generator 22. The direction of excita
35 tion current for the ?eld winding 23 may be
suitably controlled by means of an up direction
switch U and a down direction switch D While
the value of the current supplied to the ?eld
winding may be controlled by means of a high
40 speed relay V which controls the resistor r.
The up direction and the down direction
switches U and D are controlled by an up start
button UM and a down start button DM in the
car. To start the car, the up button UM or the
45 down button DM is pressed momentarily by the
car attendant. This energizes the up or the down
direction switch and causes the energized switch
to establish a self-holding circuit which causes
, the switch to be held in until the car approaches
50 a stop, when an automatic stopping system re
on the car when the relays are in an energized
condition as the car approaches a ?oor at which
a stop is to be made.
For simplicity, only one set of inductor plates
for one floor have been shown, but it will be
understood that a set similar to that shown may
be provided for each ?oor served by the car
intermediate its upper terminal landing and its
lower terminal landing. Also, if desired, a set
of inductor plates corresponding to the induc
tor plates UE and UF may be provided for the
upper terminal and a set corresponding to the
inductor plates DE and DF may be provided
for the lower terminal. However, in the present
instance, it will be assumed that the cars are 20
decelerated and stopped at their‘ terminal floors
by the usual well known limit switches. In view
of this, no specific means will be illustrated in
the present case for stopping the cars at the
terminal ?oors.
25
As shown, each inductor relay is provided with
two sets of contact members. For an “up” stop,
the contact members El of relay E cooperate
with the inductor plates UE and the contact
members Fl cooperate with the “up” inductor 30
plates UF. For the down direction the contact
members E2 of relay E cooperate with the in
ductor plates DE and the contact members F2
with the inductor plate DE.
The contact members of the inductor relays
just described are so connected with the car
control circuits that, when the inductor relays
are energized to decelerate and stop the car at
the floor represented by the inductor plates in the
down direction, the contact members E2 pass the
inductor plate DE and are thereby opened to de
celerate the car from high speed to stopping
speed. As the contact members F2 come opposite
the inductor plate DF, they open to stop the
car level with the floor. The contact members 45
El of the relay E and Fl of the relay F are
opened by the inductor plates UF and DE when
a stop is to be made in the up direction.
and in the car causes the car to automatically
The inductor relays are of the self-holding
type that is, when they are energized but have 50
not yet come opposite the inductor plate the
contact members remain closed, but when the
slow down and, stop. The stop buttons at the
?oors are to be operated by the waiting passen
relay comes opposite the inductor plate the con
tact members adjacent the plate move to their
sponsive to the stop push buttons at the ?oors
gers and the stop buttons in the car are to be
operated by the car attendant.
Although any suitable stopping system may
be utilized for automatically stopping the car
level with the ?oors it serves, I have illustrated
60 an automatic inductor relay landing system simi
lar to that disclosed in Patent 1,884,446 issued
October 25, 1932, to K. M. White and G. H.
Herm and assigned to the Westinghouse Elec
65
and an inductor plate DF for the down direc
tion. The inductor plates are constructed of
magnetic material and are mounted in the hatch
way in such position as to cooperate with and
open the contact members of the inductor relays
tric Elevator Company.
The automatic landing system for car A (Fig.
1) includes a high speed decelerating inductor
relay E and a stopping inductor relay F for auto
matically decelerating the car from its high speed
open position and are held in such open posi- .
tion until the inductor relay is deenergized. The
means for holding the contact members in the
open position on inductor relay E are the ex
tended portions 28 and 29.
For instance, it will be seen that when the in 60
ductor relay E passes the down inductor plate
DE in an energized condition, the contact mem
bers E2 are opened by the arm 29a moving up
wardly to a position where it is attracted and
held by the magnetized projection 29. There
fore, the opened contact members remain open
and do not, after passing the inductor plate,
reclose. This avoids complicating the operation
of the control system. However, I do not desire
to be limited to inductor relays of this particular
type because inductor relays of temporary open~
ing contact members (well known in the art)
and stopping it at an exact level with the ?oor.
70 The high speed decelerating inductor relay E
is mounted on car A in position to cooperate
with an inductor plate UE for the up direction
and an inductor plate DE for the down direc
may be used just as readily if the motor control
tion. The stopping inductor relay F cooperates
75 with an inductor plate UP for the up direction
system is adapted to cooperate with them.
The exact position of the inductor plates in 75
3
2,086,937
the hatchway and of the inductor relays on the
cars cannot be given here because the position
of these devices varies in each installation by
reason of differences in hoisting motors, weight
of cars, height of ceilings, etc. However, in the
many commerical installations of inductor stop
ping systems heretofore made, it has been found
that the mechanics have no difficulty in ascer
taining, while the cars are ?rst tried out in
10
operation, just the precise position in which the
plates and relays should be placed. For sim
plicity only two inductor relays are shown, but
it is understood that any desirable number may
be used in accordance with the number‘ of stops
15 of deceleration desired.
An inductor maintaining relay G is provided
for maintaining the inductor relays in an en~
ergized condition after they are energized until
the stop for which they are energized is com
20
pleted.
Inasmuch as the energized inductor relays re
main energized after their contact members are
opened by a passage near the inductor plates,
and inductor restoring relay H is provided for
deenergizing the inductor relays after a stop has
been made, and also for so interlocking them
electrically that they can be energized only while
the car is moving.
The energization of the inductor relays on a
car to decelerate and stop‘ the car at the various
?oors is effected by a stopping relay T which is
operated by stop pushbuttons in the car or by
stop pushbuttcns on the floor landings. The
energization of the stopping relay T will, as the
car nears the floor at which a stop is to be made.
energize the inductor relays on that car and
thereby cause it to decelerate and stop at that
floor. Hence, it will be understood that the car
is started by pressing either the up or the down
40 start button in the car and is stopped by press
ing either a stop button in the car or a stop
button. beside a hatchway door at a floor.
The stop buttons in the car for energizing the
stopping relay T comprise one for each of the
45 intermediate floors.
The pressing of a stop
button in the car by a car attendant will register
a stop call, or in other words, initiate and main
tain a circuit which will be completed as the car
arrives within a predetermined distance of the
floor corresponding to the button and thereby
then energize the stopping relay T which will,
in turn, energize the inductor relays to stop the
car at that iioor.
In that manner the car may
be stopped at any intermediate iloor by pressing
the stop button in the
for that floor. The
stop buttons in car A are designated as 2C, 3C
and 55C for the second, third, and fourth floors,
respectively, no buttons being necessary for the
terminal floors as the car will be automatically
60 stopped at these floors by its up limit and its
down limit switches.
The car stop buttons are provided with hold
ing or registering coils ECC, 30C and 4C0 which
hold the buttons in a depressed position after
they are pressed by the car attendant when
making stops from within the car.
The coils are
deenergized by limit switches when the car
reaches the terminals to release the buttons for
the next direction of operation. The stop push
70 buttons at the hatchway doors at the various
floors for energizing the relay T comprise one
for’ each car at each ?oor landing. The individ
ual floor stop pushbuttons for car Aare desig
nated as 2J for the second ?oor, BJ for the third
75 ?oor and AJ for the fourth floor, no buttons be
ing provided for the terminal floors as the cars
are stopped at the ?oors by the usual limit
switches (not shown).
Associated with the ?oor stop buttons for car
A are ?oor stop call registering relays 2R, SR,
and 4B. The registering relays operate to main—
tain a ?oor button circuit in a; “registered” con
dition after the button is pressed until the car
arrives at the ?oor.
With the registering relay, the momentary 10
pressing of the floor button for 'car A. will regis~
ter or initiate and maintain a circuit for the
floor button which will energize the push but
ton stopping relay T for car A as the car ap
proaches the floor in the direction correspond
15
ing to the button, and it will not be necessary
to continue pressing that button, after it has
once operated, to maintain a stop call for car A.
The floor stop buttons for each car are dis
posed beside the hatchway doors (see door 2‘! 20
for the second ?oor in Fig. 1) so that a wait
ing passenger may readily reach and press the
button when standing in front of the hatchway
door.
Inasmuch as each car has its own stop button
beside its own hatchway door at each floor, it
is an object of my invention to point out to a
waiting passenger at a floor the hatohway door
for the next car going in the direction he de
sires to go, so that he may go to that door and 30
operate the stop button there to maize the car
stop when it arrives and also be ready to step
upon the car when it arrives and stops.
This is accomplished by placing an up direc
tion "?oor lantern and
down direction floor
lantern beside each hatchway door at each ?oor
and by causing the approach of the car to
within a predetermined distance of a ?oor to
light
lantern
its hat away door at that
floor for the direction
operation,
that
the lighting of a floor
' .'n
will indicate to
a waitinrr passenger which hatchway door he
should go to and press the stop button to stop
the next approaching car in the direction he
desires to travel. In other words, each car 45
establishes ahead of itself a predetermined sig
nal zone de?ned by lighted lanterns for the
floors at which it may be stopped and at the
same time renders effective for stepping pur
poses its stopping buttons at those floors.
50
If the floor stop button
not pressed at a
iioor, the floor lantern thereat is ext’ guished
when the car
the approach point to the
floor at which it,
the car stops, the
ing the stop.
be stopped. However, if
remains lighted dur 55
The up direction ?oor lanterns for car A are
designated as iUL, ZUL, tUL and liUL for the
?rst. second, third and fourth ?oors. The down
direction lanterns for car A are designated as
EDL, liDL, 3DL and 2DL for the ?fth, fourth,
third and second floors.
Car B is also provided
with a similar set of car lanterns.
It may also be noted that each or" the ?oor
stop buttons is normally ineffective, and that 65
no stop button at a ?oor is eii'ective for opera
tion or can be made to stop its car except that
button corresponding to that car for which a
lantern is lighted at the ?oor.
In other words,
all the pushbuttons at a ?oor are normally in~
effective except the button for the next ap~
proaching car in each direction where such
approaching cars have come within a prede
termined distance of the floor.
75
4
2,066,937
In order that certain circuits may be pre
pared for use only when car A is being moved
upwardly and certain other circuits may be pre
pared for use only when car A is moving down
UK
reference may be had to the Smalley and
Reiners Patent 634,220 of October 3, 1899.
In the present system, however, it is desirable
to have the arm SM tilt to the opposite direc
wardly, I have provided an Lip-direction pref
tion as soon as the car arrives at a terminal
erence relay W and a down-direction preference
without waiting until the car actually begins
relay X, which are controlled by limit switches
and by the direction switches.
At various times in the operation of the ele
to leave. For this reason, each ?oor selector
is provided with a pair of electromagnets which
10 vators, a car may be so loaded that the at
tendant may desire to run past the outside
stop calls for various ?oors. To permit this
operation, each car is provided with a bypass
button, that for car A being designated as 37
and that for car B being designated as B31.
As long as the car attendant presses the bypass
button in his car, that car will not stop in re
sponse to stop calls registered on its ?oor but
respond to any registered stop
' stop buttons. The operation of
prevent the car from pre
’ with lighted floor lanterns. Hence
:1 of a bypass in a car will prevent
that car :...oni
dicating by its floor lanterns,
25 when it approaches a ?oor.
A plurality of lamps are provided for illumi
nating the threshold plates at the hatchway
doors of the cars, when stop calls have been
registered
on the floor
stop buttons.
The
30 threshold illuminating lamps disposed at the
hatchway doc-rs for car A are de hates as K2
tilt the selector arm to the up direction when
the car arrives at the lower terminal and to 10
the down direction when the car arrives at the
upper terminal. The electromagnets on the floor
selector SE for car A are designated as 33 for
the up direction and 39 for the clown direction
(Fig. 1).
The group of contact segments designated as
a under the up brushes 30, 3| and Gil completes
the circuits for energizing the floor lanterns at
the hatchway doors for car A.
The group of up contact segments designated
as b under the brush 33 are energized when
stop calls are registered on the stop pushbuttons
either within the car or at the hatchway doors
for the purpose
energizing the stopping relay
T to stop the car on its up trip. No contact
segments are shown for the terminal floors be
cause the car is stopped for such ?oors by its
limit switches.
The contact segments on the down side of the
floor selector are
by the down contact
0 to 43, inclusive, when the car is de
‘for the third floor and
and correspond to the down contact
K4 for the fourth floor. When a passenger at
a ?oor notices the illumination of the thresh
' just described for the up
"cction.
e marked 0 are the down floor la...
con
for the second ?oor,
old plate at a
that a stop call
car
wing at
cated. by the
hatchway door, he is informed
has been registered for the next
that door in the direction indi
associated floor lantern. The
threshold lamps do not indicate the direction,
that is taken care of by the illumination
40
either
the up direction or the down direction
floor lantern.
In order that the circuits for the pushbuttons,
?oor lanterns, relay, etc., may be connected in
accordance with the position of the cars with
respect to the floors served, car A is provided
with a floor selector SE (Fig. 1) and car 13 is
provided with a floor selector BSE. The floor
selectors may be of any suitable type such as
50 are usually employed in elevator systems, and
may be located in any suitable positions such,
for example, as in the penthouse or in the ele
vator shaft.
The floor selector for car A is provided with
a set of up contact segments, as shown in Fig. 2,
arranged according to the ?oors and disposed to
be engaged by cooperating up contact brushes
an. 3|, 32 and 33 for the up direction, and 40,
4|, 42 and 43 for the down direction. The
brushes are mounted upon and‘ insulated from
tact
and d the down stopping contact .35
segments.
Inasmuch as the lengths of the contact seg
ments
their positions,
and the will
sizesvary
of the
in accordance
brushes, aswith
well the
difference in the height of floor, speed of cars, 40
etc. in different installations, it is impractical
to give the exact dimensions and locations of
such segments and brushes in this application.
However, with the aid of the illustration given
in Fig. 2, any one familiar with the elevator
art should be able to arrange the contact seg~
ments and brushes on the floor selector to suit
any particular installation after he has ascer
tained the desired characteristics of that instal
lation.
Furthermore. each of the brushes 3!) and 3t
and 40 and 4| should be long enough to span
the opening between adjacent contact segments
in moving from one to the other in order to
prevent momentary deenergization or flickering »
of the ?oor lanterns.
It is believed that the invention may be under~
stood more fully by the following assumed opera
tion of the apparatus illustrated in the drawings.
Referring to Fig. 1, it will be assumed that
car A is standing at the third ?oor on an up
a suitable arm SM.
The movable arm SM is operated in accord
ance with the movements of the car A by means
of a screw shaft 35, driven by some part of the
65 operating mechanism of the car. The frictional
engagement between the arm SM and its operat—
ing screw 35 causes the up brushes to bear
against the up contact segments while the car
is traveling upwardly and down brushes to bear
70 against the down contact segments While the
car is traveling downwardly, it being understood
that the arm will tilt from the one position to
the other when the direction of operation of
the car is reversed.
Cl
For a more complete de
eeription of the type of floor selector here shown.
trip and that the switches 26 are closed to con
nect the supply conductors L+l, L—I, L-l-Z,
and L—2 to a source of electrical energy for
controlling the operation of the car. The energi
zation of the control system energizes the ?eld
winding IQ of the hoisting motor l8 and pre
pares that motor for operation. The connection
of the control system also energizes the up direc
tion preference relay W by a circuit extending 70
from supply conductor L-H through the contact
members D6, limit switch ULS, contact members
X4 and coil W to the supply conductor L—l.
The energization of the relay W closes its con
tact members W1, W2 and W3 to prepare a 75
2,066,937 »
circuit for lighting the up lamps 2UL, 3UL and
4UL at the second, third and fourth floors.
Inasmuch as the contact brushes 30 and 3|
are disposed on the contact segments a5 and
a4, the up lamp 4UL for car A at the fourth
?oor and the down lamp 5DL for car A at the
?fth ?oor are lighted to indicate to the Waiting
passengers at those floors that car A is approach
ing within stopping distance of those ?oors.
10 The lantern 4UL at the fourth floor indicates
to the waiting passengers that if they want
a near approaching car to stop for them, they
should press the floor stop button 4J beside the
hatchway door for car A at the fourth floor.
15 The lighting of the lamp 5DL will indicate to
the waiting passengers at the ?fth ?oor that a
5
the opening of the contact members V3 prevents
operation of the stopping inductor relay F while
the car is moving at high speed.
The energization of the restoring relay 1-!
closes its contact members HI, thereby preparing
a circuit for energizing the inductor relays when
it is desired to make a stop.
It will be assumed that the waiting passenger
desiring to get off at the fourth ?oor informs the
attendant of that fact and that the attendant 10
thereupon presses the stop car button 4C to cause
the car to stop at the fourth ?oor. The press
ing of the button 4C causes it to be‘ held in by
its holding coil 400 and thereby registers a call
from within the car for the fourth floor which, 15
in turn, energizes the stopping contact segment
near approaching car will arrive soon at that
124.
hatchway door for the down direction so that
they may move to that door and be ready to
approaches the fourth ?oor, its up contact brush
33 engages the “live” stopping contact segment
b4 for the fourth ?oor, thereby energizing the
stopping relay T by a circuit extending from the
supply conductor L+l through the contact
members of button 40, the contact segment b4,
brush 33 and the coil of relay T, to the supply
conductor L——l.
25
The energization of the stopping relay T
closes its contact members Tl thereby energizing
the decelerating inductor relay E and the in
ductor holding relay G by a circuit extending
from the supply conductor L+l in parallel 30
through the coils of relays G and E and thence
through the contact members TI and HI to the
supply conductor L——l. The energization of re
lay G closes its contact members Gl to main
20 step on the car as soon as it arrives.
Also, inasmuch as car A is standing at the
third ?oor on an up trip, its high speed relay V
is deenergized, thereby closing its contact mem~
bers V2 and thus energizing the up ?oor lantern
25 3UL for car A at the third ?oor by a circuit
extending from supply conductor L+2 through
the lantern 3UL, contact members W2, the con
tact segment a3, brush 32 and contact members
V2 and NI to the supply conductor L—2. The
30 lighting of this lantern indicates to waiting pas
sengers at the third floor that the car is on an
up trip.
It will be assumed now that the waiting pas
senger at the third ?oor enters car A and that
35 the car attendant closes the car door (not
shown), thereby closing the door contact mem
bers 64, and then presses the starting button UM
to move the car upwardly. The closing of the
up starting button UM energizes the up direction
40 switch U and the inductor restoring relay H by
a circuit extending from the supply conductor
L+l through the contact members of the but
ton UM, contact members Fl, coil of switch U,
and coil of inductor restoring relay H and the
45 door and gate contact members 84 to the supply
conductor L_ l.
The energization of the up direction switch U
closes its contact members Ul, U2, U3, U4 and
U5 and opens its contact members U6. The
50 closing of the contact members U4 provides a
self-holding circuit for the up direction switch
U. The closing of contact members Ul ener
gizes the brake magnet 6 to release the brake 5,
and the closing of the contact members U2 and
55 U3 energizes the auxiliary ?eld winding 23 of
the generator 22 by a circuit extending from the
supply conductor L+l through the contact mem
bers U2, winding 23, contact members U3 and
resistor r to the supply conductor L——l. The
60 opening of the contact members U6 prevents en
ergization of the down preference relay X while
the car is moving upwardly and the closing of
the contact members U5 energizes the high speed
relay V by a circuit extending from the supply
65 conductor L-l-l through the contact members
U5 and El and the coil of relay V to the supply
conductor L—l.
The energization of the high speed relay closes
its contact members VI and opens its contact
70 -members V2 and V3. The closing of the contact
members Vl short-circuits the resistor r in the
circuit of the ?eld winding 23 and causes the
car to move at high speed. The opening of the
contact members V2 extinguishes the up direc
75 tion lamp 3U'L at the third ?oor for car A, and
As car A starts from the third floor and
tain the inductor relays in an energized con
dition until the car stops.
As car A comes closer to the fourth ?oor, the
decelerating inductor relay E passes the up in
ductor plate UE, and is thereby operated to open
its contact members El, thus deenergizing the
high speed relay V to open its contact members
VI and close its contact members V2 and V3.
The opening of the contact members Vl inserts
the resistor 1‘ in the circuit of the ?eld winding
23 and thereby decreases the speed of the car 45
from high speed to stopping speed. The
closing of the contact members V2 completes a
circuit for lighting the up lantern 4UL for car
A at the fourth floor when the car comes to
rest at that floor by a circuit extending from
the supply conductor L+2 through the lantern
4UL, contact members WI, contact segment a4,
brush 32, and contact members V2 and NI to
the supply conductor L~2. The closing of the
contact members V3 causes the inductor stop
ping relay F to be energized by a circuit extend
55
ing from the supply conductor L+l through
the contact members V3, the coil of relay F, and
the contact members GI and HI to the supply
conductor L-l.
As the car comes still closer to the fourth 60
floor, the energized stopping inductor relay F
passes the up indicator plate UP for the fourth
floor and is thereby operated to open its contact
members Fl to deenergize the up direction switch
U, thereby opening its contact members Ul, U2, 65
U3, U4 and U5 and closing its contact mem
bers U6.
The opening of the contact members U2 and
U3 deenergizes the ?eld winding 23, thereby
stopping the hoisting motor l8, and the opening
of the contact members Ul deenergizes the brake
magnet 6 thereby applying the brake 5 to bring
car A to a level stop, at the fourth ?oor. There
upon the attendant opens the door (not shown)
6
2,066,937
to permit the passenger to leave the car at the
fourth floor. This operation also opens the door
and safety contact members 64, thereby pre
venting operation of the car while the door and
gate remain open.
It will be assumed now that the attendant
closes the door and gate and presses the up
starting button UM to run the car on up to the
fifth floor in the same manner as described in
moving the car from the third ?oor up to the
fourth ?oor. As the car comes up to the ?fth
floor, the limit switches (not shown) cause it to
decelerate and stop at the upper terminal. Also
as the car moves into the terminal, its limit
15 switch ULS is operated to deenergize the up di
rection preference relay W which in turn closes
its contact members W4 in a circuit for the down
direction preference relay X, thereby energizing
that relay by a circuit extending from the sup
20 ply conductor L+I through the contact members
U6, the contact members of down limit switch
DLS, the contact members W4 and the coil of
relay X to the supply conductor L— I. Therefore,
as the car stops at the upper terminal, the up
25 direction contact members WI, W2 and W3 of
relay W are opened to prevent operation of the
up ?oor lanterns 2UL, 3UL and 4UL for car A
at the second, third and fourth ?oors and the
down direction contact members XI, X2 and X3
30 are closed to prepare the circuits of the down
floor lanterns 4DL, 3DL and 2DL of car A for
operation.
Inasmuch as the down selector magnet 39 is
in parallel with the coil of the down direction
35 preference relay X, it is also energized to tilt
the ?oor selector arm SM to the down direction
thereby disengaging the upper brushes 30, 3|,
32 and 33 from the up side of the ?oor selector
and causing the brushes 40, 4|, 42 and 43 to en
40 gage the down side of the floor selector.
In this
position, the down brushes 4!] and M engage the
down contact segments 02, c3 and c4 at the sec
ond, third and fourth ?oors which causes the
down lamps IIDL, 3DL and 2DL at the hatchway
45 doors of car A at the fourth, third and second
floors to be lighted by the following circuits.
The circuit for lantern 4DL extends from the
supply conductor L+2 through the lantern 4DL,
contact members XI, contact segment 04, brush
50 4| and contact members NI to the supply con
ductor L——2.
The circuit for lantern 3DL ex
tends from supply conductor L+2, contact mem
bers X2, contact segment c3, brush 40 and con
tact members NI to the supply conductor L——2.
55 The circuit for lantern 2DL extends from the
supply conductor L+2 through lantern 2DL,
contact members X3, contact segments 02, brush
40 and contact members NI to supply conductor
L-~2.
60
Inasmuch as car A is now standing at the
upper ?oor and ready for a down trip, its high
speed relay V is deenergized, and, therefore, its
contact members V2 are closed, thus lighting the
down direction lantern 5DL for car A at the up
65 per terminal by a circuit extending from the
supply conductor L+2 through lamp 5DL, con
ductor 50, contact segment 05 and ‘brush 42 and
contact members V2 and NI to the supply con
ductor L——2. All the down lamps at the hatch
70 way doors of car A are now lighted to indicate
to intending passengers the hatchway doors at
which the next down car will appear and that
ii‘. any passenger desires to stop that down car,
he should walk to the indicated hatchway door
75 and press the stop button beside it.
The deenergization of the down direction relay
W when car A arrives at the upper floor also
opens its contact members W5 thereby deener
gizing the holding coils 20C, 30C and 40C for
the car buttons. This operation releases the car
button 40 upon which the car attendant had
registered the fourth floor stop on the up trip.
Inasmuch as the down direction preference
relay X was energized when the relay W was
deenergized, the contact members X5 are closed 10
to immediately reenergize the holding coils ZCC.
300 and 40C to enable the car attendant to
register stop calls from within the car during
the coming down trip.
With car A standing at the upper terminal 15
ready for a down trip, it will be assumed that
a waiting passenger at the second floor desires to
make a down trip. Inasmuch as the ?oor lan
tern 2DL beside the hatchway door 21 of car A
at the second floor is lighted as previously de
scribed, the waiting passenger at that ?oor is
informed that if he will step to that door and
press the stop button 21 thereat, he will stop a
near approaching car at that door in the down
direction. It will be assumed now that the wait 25
ing passenger walks to the hatchway door 21
and presses the down button U to stop the car,
this action energizes the stop call registering re
lay 2R by a circuit extending from the supply
conductor L+2 to the contact members 2.] to the
coil of relay 2R, conductors 5|, 52 and 53, con
tact segment 02, brush 40 and contact members
NI to the supply conductor L—2.
The energization of the registering relay 2R
closes its contact members 2RI, 2R2 and 2R3. ..
The closed contact members 2RI establish a self
holding circuit for the relay 2R, thereby regis
tering the down stop call at the second floor for
car A. The closed contact members 2R2 close
a circuit from the supply conductor L+I to
render the stopping contact segment d2 “alive"
so that when car A arrives near the second ?oor
its brush 43 will engage the energized contact
segment I12 and thereby effect the stopping of
the car.
The closed contact members 2R3 energize the
threshold lamp K2 at the second ?oor by a
circuit extending from the supply conductor
L+I through, the contact members 2R3 and
lamp K2 to the supply conductor L‘I. The
energized lamp K2 illuminates the threshold
plate 54 at the hatchway door 21 of car A and
the waiting passenger is informed thereby that
his stop call has been registered. This lamp
50 I
also serves to illuminate the entrance to the car
and thereby eliminates some of the danger
which may occur if the car fails to stop exactly
level with the ?oor.
It will be assumed now that the attendant in
car A presses the down start button DM to 60
make a down trip. The operation of the button
DM energizes the down direction switch D by a
circuit extending from the supply conductor
L+I through the button DM, the contact mem
bers F2, the coil of relay D, the coil of relay H 65
and the gate and door contact members 54 to
the supply conductor L-I.
The energization of. the down direction switch
D closes its contact members DI, D2, D3, D4, and
D5 and opens its contact members D5. The
closed contact members D4 complete a self-hold
ing circuit for the down direction switch D. The
closed contact members D2 energize the brake
magnet 6 to release the brake 5 from the hoist
ing motor I8. The closed contact members DI 75
2,066,937‘
and D3 energize the ?eld winding as of the gen~
erator 22 by a circuit extending from the supply
conductor L+il through the contact members
D3, winding
the contact members Di and
resistor r to the supply conductor L~—i. The
energization of the generator 22 and the release
of the brake 5 causes the car to start downwardly.
The closed contact members D5 energize the
1
high s‘
“m1
(in. 1:13,
1
10
V by a circuit extending from
ly conductor L-l-i through the contact
members
and E2 and the coil of relay V to the
supply conductor L——i. The energized relay V
closes its contact members VI and opens its con
tact members V2 and V3. The closing of the
~
c 5 Vi short circuits the resistor 1*
‘Hit of the field winding 23 and thereby
car to run at high speed.
The open
the contact members V2 extinguishes the
antern SDL of car A at the upper terminal.
The opened contact members V3 prevent ener
'
' the stopping relay F while the car is
,
.gh speed.
The closing of the contact members of button
DM also energizes the inductor maintaining re
25 lay
to close its contact members I-li, thereby
preparing a circuit for energizing the inductor
relays for stopping the car when the car ap
proaches a ?oor at which a stop is to be made.
As car A leaves the ?fth floor on its down
30 trip, its ?oor lantern brush lll leaves the contact
segment cr‘l, thereby extinguishing the down lamp
The clo
the contact members V2 energizes '
l
?oor
conductor
by aL-l-Z
circuit
to the
extending
lantern from
iiDL, the
the co‘
members X3, contact segment
brush
and
contact members V2 and NZ to the supply conduct-or L—2. The energized floor
-tern 23L
therefore remains lighted while the car A comes 10
into and makes its down stop at the second
floor. The lantern will not be extinguished until
the car leaves, at which time it will be extin~
guished by the opening of the high speed contact
members V2 and by the brush 632 leaving the con
tact segment 02.
The closing of the contact members ll’ 52 with
brush
on segment 02 also I intains the regis_
tering relay
in its energ -d condition until
the car leaves the door at which time the contact members V2 open and brush
leaves the
segment 02.
The closed contact members V3 cause the
stopping inductor relay F to be energized by the
circuit previously described. As car A approaches 25
still closer to the second floor, inductor relay F
comes opposite the inductor plate DF and is
there-by operated to open its contact members
F2 to deenergize the down direction switch I)
and thereby bring the car to a stop.
dDL for car A at the fourth floor because that
car is now too close to the fourth floor to be
closes
contact
The its
deenergized
members
contact members
direction
D2, D5.
l. switch
The
Dr?- and
opened
D opens
D5 con~
stopped thereat. The fact that brush M has
left the contact segment c4 also opens the cir
tact members D2 deenergize the brake magnet
6 and apply the brake 5 to the hoisting motor
the
cuit fourth
through
?oor
which
may be
theenergized
registering
by pressing
relay (5Rthe
button liJ, thereby rendering that button inef
energize the ?eld winding 23 of the generator
22 and thereby stop the car level with the sec
fective.
As the car moves downwardly and
4:0 leaves the fourth floor going to the third ?oor,
the brush (ii eaves the contact segment 03 and
engages the contact segment 02.
The brush Ali in leaving the contact segment
c3 opens the circuit for the down direction lamp
SDL at the third floor for car A and extinguishes
that lamp inasmuch as car A cannot now be
stopped at the third floor because of its position
and because the separation of the contact brush
all
the contact segment 03 also prevents ef
50 fective operation of the button 3J and the regis
tering relay 33 at the third floor.
As car A comes to within a predetermined dis
tance of the second floor, its brush 43 engages
the “live” down stop contact segment 032 to stop
55 the car at the second ?oor.
the brush
The engagement of
and the contact segment d2 ener
gizes the stopping relay T by a circuit extending
from- the supply conductor L+l through the
contact members N4 and 2R2 and the contact
60 segment d2, brush t3 and the coil of relay T to
the supply conductor L——l. The energized relay
'1’ closes its contact members Ti, thereby ener»
gizing the decelerating inductor relay E and the
inductor maintaining relay G by a circuit ex
65
23 and thereby causes the car to decelerate "
high speed to stopping speed.
tending from the supply conductor L-H through
the coils of relays G and E to the supply con
ductor L—l as previously described.
As car A comes closer to the second ?oor, the
energized inductor relay E passes the down in
duct-or plate DE and is thereby operated to open
its contact members E2, thus deenergizing the
high speed relay V which new opens its contact
members Vi and closes its contact members V2
and V3. The open contact members Vi reinsert
75 the resistor r in the circuit of the ?eld winding
it.
open contact members DI and. D3 de
ond floor. Car A is now standing on its down
trip at the second floor with its ?oor lantern 2D]; 40
lighted and it is assumed that the attendant
opens the door and permits the waiting passen~
ger to enter the car.
It will be assumed that the Waiting passenger
enters the car and that the car attendant closes
the door and starts the car downwardly to the
lower terminal in the same manner as he started
the car from the upper terminal. As the car
starts away from the second ?oor, the reC ster
ing relay “ER is tie-energized by the opening of
the contact members V2, and thereby opens its
contact members 2R3 thus extinguishing the
threshold lamp K2 at the second ?oor. The
opening of the contact members V2 also extin~
guishes the floor lantern ZDL at the second
floor.
It will also be assumed that‘ the car is
stopped at the lower terminal by the usual limit
switches (not shown), that the passenger de~
parts and that the car is‘ run upwardly as pre—
viously described to‘ the upper terminal where 60
it takes on a su?icient number of down passen
gers to ?ll the car‘.
It will be assumed again that a waiting pas
senger at the second floor, observing the lighted
?OOI' lantern EZDL at the hatchway door corre» 65
sponding to car A, Walks to that ‘door and
presses the button 2J in the same
as
the passenger described in the previous opera~
tion.
The pressing of the button ZJ registers a down
stop call on car‘ A at the second ?oor as pre
viously
the
attendant
described.
of car
It will
A operates
now be the
assumed
car
a
down trip as previously described but, inasmuch
as he has a, full load, he presses the bypass
2,066,937
8
button 31 in his car so as to bypass all down
outside stop calls. The pressing of the button
31 energizes the bypass relay N by a circuit ex
tending from the supply conductor L+l through
the coil of relay N and the contact members of
buttons 31 to the supply conductor L-l. The
energization of the relay N opens its contact
members NI, N2, N3 and N4. The opening of
the contact members NI opens the circuit to
10 the floor lantern brushes 40, 4| and 42 of car A,
thereby extinguishing all of the down floor lan
terns that were lighted for car A.
Inasmuch
as the down ?oor lanterns for car A are now
extinguished, no waiting passenger will be given
a signal that car A is approaching. If the wait
ing passenger at the second. ‘floor presses the
button 2J before the attendant in car A presses
the bypass button
the
will know,
by the extinguishment of the lantern ZEDL and
the threshold light K2, that the car correspond
ing thereto is bypassing outside stops at the sec
ond ?oor and will be thus reinin'lecl to look to
some other hatchway door
an illuminated
down lamp.
The opened contact members N also prevent
energize the
any circuit from being" complet .
registering relays 4R, BR and v. "-2,. Therefore, as
long as the attendant holds his ?nger on the
bypass button 31, no one at the floor landings
30 can register a stop call for car A.
The open contact members N2, N3 and N5
in the circuits to the stopping segments d4, d3
and d2 prevent energization of these stopping
contact segments by the floor registering stop
buttons.
In view of the operation of
bypass button
as described, it will be seen
at the car at~
tendant in the
can bypass all outside calls >
when he desires and at the same time prevent
40 any registered stop calls being made ei'lective
for his car and prevent the lighting of any floor
lanterns to indicate that his car
approaching
any of the ?oors.
It also will be seen by the foregoing general
45 description that I have provided a simple signal
and control system for a group of elevator cars
by which waiting passengers at the various floors
will be given signals which will indicate to them
the hatchway door at which the next car for
their direction of travel will appear so that they
may at once walk to that door, press the stop
button to stop the car‘ for that door when it ar
rives and be ready to step on the car as soon as
the door opens. It will also be seen that this
system will eliminate the necessity of a passen
ger watching all of the hatchway doors to lo
cate the one at which a car will stop in response
to his stop call.
Although I have illustrated and described only
60 one embodiment of my invention, it is to be
understood that the same may be modi?ed or
changed in many respects without departing
from the spirit and scope of the invention.
I claim as my invention:
1. In an elevator system for operating a car
past a plurality of hatchway doors, a signal
device for each door, and means responsive to
the approach of the car to within a predeter
mined distance of each door for energizing the
signal device at that door and for deenergizing
the signal device when the car passes the point
beyond which it cannot be decelerated to a stop
at that ?oor.
2. In an elevator system for operating a car
75 past a plurality of hatchway doors, a floor lan
tern at each door, and means responsive to the
approach of the car to within a predetermined
distance of each door for lighting the floor lan
tern at that door and for extinguishing the lan
tern when the car passes the point beyond which Cl
it cannot be decelerated to a stop at that floor.
3. In an elevator system for operating a car
past a plurality of hatchway doors, a signal de
vice at each door, means responsive to the ap
proach of the car to within a predetermined
distance of each door for energizing the signal
device at that door and for deenergizing the sig
nal device when vthe car passes the point beyond
which it cannot be decelerated to a stop at that
floor, and means responsive to stopping the car
at a door for energizing the signalling device
thereat until the car
1i. In an elevator system, a bank of cars op
erable past a plurality of floors each having a
hatchway door for each car, a normally ineffec 20
tive call-registering device for each door for
each car, and means responsive to operation of
the cars for rendering effective the call-register
ing devices corresponding to each car in prede
termined zone ahead of that car.
5. In an elevator system for operating a car
past a hatchway door, control means for the car
including a normally ineffective control device at
the door, and means responsive to the approach
of the car to within a predetermined distance of 30
the door for rendering the control device effec
tive for operation to stop the car.
6. In an elevator system for operating a car
past a plurality of hatchway doors, control
means for the car including a control device at
each hatchway door, means responsive to opera
tion of the car for rendering effective the con
trol devices in a predetermined zone ahead of
the car, and means responsive to operation of
an effective control device at a door for stopping 40
the car when it arrives at that door.
7. In an elevator system a bank of cars
operable past a plurality of floors each of which
is provided with a hatchway door for each car,
control means for the cars including a normally
ineffective up control device and a normally in
effective down control device at each hatchway
door, and means responsive to operation of the
cars for rendering effective the control devices
in a predetermined zone ahead of each car for '
operation to stop the car.
8. In an elevator system a bank of cars op
erable past a plurality of floors each of which
is provided with a hatchway door for each car,
control means for the cars including a normally
ineffective up control device and a normally in
effective down control device at each hatchway
door, and means responsive to operation of the
cars for rendering effective the control devices
in a predetermined zone ahead of each car for if)
operation to stop the car, and means responsive
to the operation of an effective control device
at a hatchway door for stopping the car asso
ciated therewith.
9. In an elevator system, a. bank of cars op
erable past a plurality of ?oors, each of which
is provided with a hatchway door for each car,
a signal device and a normally ineffective con
trol device at each door, control means for the
cars including means responsive to operation of
the cars for energizing the signal devices and
rendering e?ective the control devices in a pre
determined zone ahead of each car.
10. In an elevator system, a bank of cars op
erable past a plurality of floors, each of which 75
9
$3,666,837’
is provided with a hatchway door for each car,
a ?oor lantern at each door, control means for
is provided with a hatchway door for each car,
a threshold lamp at each door, a signal device
the cars including a normally ineffective control
device at each door, and means responsive to
operation of the cars for lighting the ?oor lan
terns and rendering e?ective the control devices
at each door, a normally ineffective registering
relay for each door, means responsive to opera
tion of the cars for energizing the signal devices
and rendering effective the registering relays in a
in a predetermined zone ahead of each car.
11. In an elevator system, a bank of cars op
erable past a plurality of ?oors, each of which
10 is provided with a hatchway door for each car, a
floor lantern at each door, control means for the‘
cars including a normally ineffective control
device at each door, and means responsive to
operation of the cars for lighting the ?oor lan
terns and rendering effective the signalling de—
vices in a predetermined zone ahead of each
car, and means responsive to operation of an
effective control device at a hatchway door for
stopping the car associated therewith when it
20 arrives thereat.
12. In an elevator system, a bank of cars op
erable past a plurality of floors each of which is
provided with a hatchway door for each car, a
signal device at each door, a registering relay for
each door, means responsive to operation of the
cars for rendering effective the registering re
lays in a predetermined zone ahead of each car,
a control switch at each door for operating the
registering relay associated therewith and means
responsive to operation of the registering relay
for a door for stopping the car associated there
with when it arrives thereat.
13. In an elevator system, a bank of cars op
predetermined zone ahead of each car, a control
switch at each door for operating the registering
relay associated therewith, and means responsive
to an operated effective registering relay for
immediately lighting the threshold lamp at the
door associated therewith and for stopping the
car associated therewith when it arrives thereat.‘
15. In an elevator system, a bank of cars 0per~
able past a plurality of floors each of which is
provided with a hatchway door for each car, a
threshold lamp at each door, an up ?oor lan
tern and a down floor lantern at each door,
a normally ineffective registering relay at each
door, means responsive to operation of the cars
for lighting the floor lanterns and rendering ef
fective the registering relays in a predetermined
zone ahead of each car, a push button switch
at each door for operating the registering relay
associated therewith, and means responsive to
an operated effective registering relay for a door
for immediately lighting the threshold lamp
associated therewith and for stopping the car
associated with that door when it arrives thereat.
16. In an elevator system, a bank of cars op
erable past a plurality of ?oors, each of which
erable past a plurality of floors each of which
is provided with a hatchway door for each car,
a threshold lamp at each door, an up ?oor lan
tern and a down ?oor lantern at each door, a
is provided with a hatchway door for each car,
an up signal device and a down signal device at
door, means responsive to operation of the cars
each hatchway door for use in indicating the
direction of approach of the car associated with
normally ineffective registering relay at each 35
for lighting the floor lanterns and rendering
effective the registering relays in a predeter
that door, a registering relay for each door,
mined zone ahead of each car, a push button
40 means responsive to operation of the cars for
switch at each door for operating the registering
relay associated therewith, means responsive to
energizing the signal devices for the direction of
operation of the car and for rendering effective
the registering devices in a predetermined zone
ahead of each car, a control switch at each door
45 for operating the registering relay associated
therewith, and means responsive to operation of
an effective registering relay for a door for
stopping the car associated therewith when it
arrives thereat.
50
an operated effective registering relay for a door
for immediately lighting the threshold lamp
associated therewith and for stopping the car
associated with that door when it arrives thereat, 45
and means responsive to the stopping of the
car for lighting the ?oor lantern for its direc
tion of operation and maintaining it lighted
while the car remains at the ?oor.
14. In an elevator system, a bank of cars
operable past a plurality of ?oors, each of whichv
30
HENRY D. JAMES.
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