US3625311A

US3625311A - Controls for multicompartment elevators

Info

Publication number: US3625311A
Application number: US30408A
Authority: US
Inventors: Frederick Henry Nowak; Henry Joseph Pasternak
Original assignee: Otis Elevator Co
Current assignee: Otis Elevator Co
Priority date: 1970-04-21
Filing date: 1970-04-21
Publication date: 1971-12-07
Anticipated expiration: 1988-12-07
Also published as: ZA712557B; GB1334743A; JPS5433018B1; DE2119180A1; DE2119180C2; CH529054A; MY7400173A; CA933297A; FR2089991A5; BR7102332D0

Abstract

Controls for multicompartment elevator cars including, one, an arrangement operating while a car is parked and in response to the answering of a hall call for one direction of travel by one compartment to delay for at least a predetermined period the answering of a hall call for the other direction by the other compartment; two, an arrangement for preventing under certain circumstances the registration of certain car calls in each of the compartments of a car; three, an arrangement in which two separate hall call registration devices are provided at a predetermined intermediate landing for indicating desired travel in a particular direction from that landing, one for travel to odd landings in that direction and the other for travel to even landings; four, an arrangement for stopping some of a plurality of two compartment cars with their lower compartments for odd landing hall calls and the rest of the cars with their upper compartments for even landing hall calls; five, an arrangement for preventing both the registration of car calls for even landings in lower compartments stopped for odd landing hall calls and the registration of car calls for odd landings in upper compartments stopped for even landing hall calls; six, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to an indication that a passenger at that floor desires to travel to a landing which is not served by the compartment of the selected car adjacent the dispatching floor; and seven, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to the registration of a hall call at a predetermined landing which the selected car cannot answer.

Description

United States Patent Frederick Henry Nowak New Fairiield, Conn.;

Henry Joseph Pasternak, Parlin, NJ. [2]] Appl. No. 30,408

[72] Inventors [22] Filed Apr. 21,1970

[45] Patented Dec. 7, 1971 [73] Assignee Otis Elevator Company New York, NY.

[54] CONTROLS FOR MULTICOMPARTMENT Primary Examiner-Benjamin Dobeck Assistant Examiner-W. E. Duncanson, Jr. Attorneys-Joseph L. Sharon and Robert T. Mayer ABSTRACT: Controls for multicompartment elevator cars including, one, an arrangement operating while a car is parked and in response to the answering of a hall call for one direction of travel by one compartment to delay for at least a predetermined period the answering of a hall call for the other direction by the other compartment; two, an arrangement for preventing under certain circumstances the registration of certain car calls in each of the compartments of a car; three. an arrangement in which two separate hall call registration devices are provided at a predetermined intermediate landing for indicating desired travel in a particular direction from that landing, one for travel to odd landings in that direction and the other for travel to even landings; four. an arrangement for stopping some of a plurality of two compartment cars with their lower compartments for odd landing hall calls and the rest of the cars with their upper compartments for even landing hall calls; five, an arrangement for preventing both the registration of car calls for even landings in lower compartments stopped for odd landing hall calls and the registration of our calls for odd landings in upper compartments stopped for even landing hall calls; six, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to an indication that a passenger at that floor desires to travel to a landing which is not served by the compartment of the selected car adjacent the dispatching floor; and seven, an arrangement for transferring selection at a dispatching floor from a selected car to another car in response to the registration of a hall call at a predetermined landing which the selected car cannot answer.

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CONTROLS FOR MULTICOMPARTMENT ELEVATORS This invention relates to elevator control systems for cars having multiple passenger compartments. More particularly, it pertains to improvements in-elevator control systems for cars having two compartments.

In a suitable installation, a double compartment elevator car can serve two landings simultaneously. Thus it operates more efficiently than a single compartment car would in the same installation because it can answer the same number of calls in less time with less stops.

One known arrangement for multicompartment cars operates a group of such cars under the control of a well known groups supervisory system in which the cars travel in what is known as round trips. Each car starts each trip from the bottom tenninal, travels up either to the top terminal or to a landing below that terminal for which a call is registered, usually the highest call, and then returns to the bottom terminal. During light traffic periods all cars park at the bottom terminal waiting to be dispatched as needed.

Recently it has become more desirable to operate groups of elevator cars in systems which segregate the landings served by the cars into zones of landings. During light trafi'ic periods the cars of these systems are parked in the zones in a distributed fashion throughout the hoistway. ln systems of this type with single compartment elevator cars, the answering of up and down hall calls registered at the landings is straightforward. A hall call is registered either at the landing at which a car is located or above or below that landing.

The answering of an up or a down hall call registered at the landing at which a single compartment car is located is accompanied by the opening of the car's doors in response thereto. This is accomplished by providing either an arrangement in which the hall call establishes the appropriate direction of travel for the car before the doors are opened or an arrangement in which the car call registered by the passenger upon entering the car establishes the appropriate direction of travel. In neither arrangement is there anything more than a remote chance of a passenger unknowingly boarding the car and being taken in a direction opposite to that in which he desires to travel; even in those situations in which he is one of two passengers who both register calls at the same landing for opposite directions of travel. In one arrangement, that which establishes direction before the doors are opened, one of these two calls is not cancelled and the system indicates which passenger has preference in using the car. In the other arrangement both calls might be cancelled but the passengers themselves can decide who should have preference. I

In those situations in which a hall call is registered either above or below the location of a single compartment car, at a landing to which the car is temporarily precluded from answering hall calls, no response ensues by that particular car. If on the other hand the car can answer the call, response is had by l), determining the location of the landing at which the call is registered with respect to the location of the car, (2), establishing the proper direction of travel for the car in accordance with these respective locations, and (3), causing the car to start in the established direction.

Where a double compartment passenger elevator car is employed in a suitable installation having a control system in which the car can remain at rest at a position intermediate the terminal landings, it means that the car can park with its upper compartment located adjacent one landing and with its lower compartment located adjacent the next lower landing. In these circumstances, it is desirable to have the system arranged so that the answering of a hall call for one direction of travel registered at the landing adjacent one compartment delays the answering of a hall call for the other direction of travel registered at the landing adjacent the other compartment for at least a predetermined period of time. Otherwise, one compartment could answer a hall call registered by an intending passenger desiring to travel in one direction while the other compartment was answering a hall call registered by another intending passenger desiring to travel in the opposite direction.

In such a situation, one of the passengers upon boarding his compartment would be taken in a direction opposite to that in which he desires to travel.

It is an object of this invention to provide elevator control systems having multicompartment cars, which park their cars at intermediate landings, with an arrangement which in response to the answering of a hall call for one direction of travel registered at the landing adjacent one compartment delays the answering of a hall call for the other direction of travel registered at the landing adjacent the other compartment for at least a predetermined period of time.

In referring to the answering of a hall call herein is meant those operations which a car undergoes in order to provide service to the intending passenger who registered the call. In the disclosed embodiment these include (i), causing the car to travel to the landing at which the call is registered and to stop with one of its compartments located adjacent thereto, if one of its compartments is' not already so located, (2), opening the doors of that compartment, (3), cancelling the call, and (4), lighting a hall lantern indicating the availability of the car to travel in the direction indicated by the call.

As will be described, control systems can be arranged so that some of the forgoing operations take place notwithstanding a call is not being answered. Thus, while one compartment is answering a call at a particular landing it might be desirable to open the doors of both compartments. Even so, if a hall call is registered at the landing adjacent the other compartment for the direction opposite that of the hall call being answered, according to the invention, the answering of the opposite direction hall call is delayed for at least a predetermined period of time. During this time, in the disclosed constructed embodiment, the unanswered hall call is not cancelled and does not cause the lighting of a hall lantern indicating the availability of the car for travel in its direction. Should this time elapse without the registration of a further call for the same direction of travel as the answered call, the opposite direction hall call is then answered as a result of which it is cancelled and the proper hall lantern is lighted.

The disclosed embodiment is arranged so that a car answers a hall call only after it has a direction of travel established which corresponds to that indicated by the call which is being answered. This insures the availability of the car for travel in the direction indicated by the call before the call is answered. Thus, some of the operations included in answering a hall call such as cancelling the call and lighting the proper hall lantern cannot occur before the direction corresponding to the call is established. Accordingly, the passenger is provided with an indication that his call is being answered only after the car is prepared to travel in the direction indicated by his call.

it is, therefore, another object of this invention to provide elevator control systems having multicompartment cars, which park their cars at intermediate landings, with an arrangement which enables a car to answer a hall call only after it has a direction of travel established for the direction indicated by the call.

It is also desirable in a system employing a double compartment car in which the car can park with its compartments located adjacent intermediate landings to have the system arranged so that the registration of a hall call at a landing at which either one of the compartments is located does not cause the car to travel to answer that call. On the contrary, the doors of the compartment located adjacent the landing at which the call is the call should open in response to the registration of the call. At the same time, of course, the car must be able to respond to calls at landings above its uppermost compartment and below its prepares compartment.

It is another object of this invention to provide elevator control systems having multicompartment cars, which park their cars at intermediate landings, with an arrangement which enables a parked car to remain at rest and answer any hall call registered at any landing adjacent which one of its compartments is located.

Another advantage of multicompartment elevator cars is that the service they provide from particular landings can be restricted. In elevator systems with double compartment cars, service from the first two landings can be restricted such that passengers boarding the lower compartment at the first, or lower lobby, landing can only register car calls for landings arbitrarily identified as odd landings while those boarding the upper compartment at the second or upper lobby, landing can only register car calls for the remaining landings identified as even landings. In some systems having double compartment cars a car can stop in answer to a hall call with either compartment located adjacent an intermediate landing. If restricted service is provided in this system, provision must be made to remove the restriction to permit an intending passenger at such an intermediate landing to register a car call for any landing in either compartment. Passengers might thwart the intended purpose of the restricted service arrangement, however, if unrestricted service were permitted as soon as the car left the first two landings. To discourage misuse of the system, restricted service is retained in both compartments until the car answers a hall call. In this way passengers who board at either of the first two landings tend to comply with the restricted service operation. Failure to comply may result in being carried beyond the floors to which they desire to travel, since they have no guarantee that the car is going to answer a hall call before reaching those floors.

It is another object of this invention to provide elevator control systems having multicompartment cars with an arrangement which prevents the registration of certain car calls in each of the compartments while the car is located with its compartments adjacent predetermined landings.

It is another object of this invention to provide elevator control systems having multicompartment cars with an arrangement which prevents the registration of certain car calls in each of the compartments until the car answers a hall call.

Restricted service may also extended to an intermediate landing above the first two landings, not withstanding passengers enter one of the compartments at this landing. To accomplish this, separate odd and even landing hall call registration devices are provided at this landing. In this way, intending passengers by registering whether they desire to travel to an odd or even landing cause a lower, or odd landing serving compartment, or an upper, or even landing serving compartment, respectively, to stop in answer to the call adjacent the landing at which the call is registered. Signs may be employed at this landing to instruct intending passengers which landings a compartment is serving so that when the doors open they may be informed as to whether the compartment will transport them to their desired destination or not.

It is, therefore, a feature of this invention to provide elevator control systems having multicompartment cars with even and odd landing hall call registration devices at a particular intermediate landing and to arrange the stopping means of the cars to stop them with given ones of their compartments adjacent that particular landing in response to the registration of hall calls at that landing.

It is another feature of this invention to cause a first group of cars to stop with their lower compartments adjacent a particular landing in response to the registration of odd landing hall calls thereat and to prevent this first group from stopping with either compartment adjacent that landing in response to the registration of even landing hall calls; and in addition to cause the remaining second group of cars to stop with their upper compartments adjacent that particular landing in response to the registration of even landing hall calls and to prevent this second group from stopping with either compartment adjacent that landing in response to the registration of odd landing hall calls.

It is yet another feature of this invention to prevent the registration of odd landing car calls in the upper compartment of a car which stops at a particular landing with its upper compartment in response to even landing hall calls while this car is so stopped and to prevent the registration of even landing car calls in the lower compartment of a car which stops at that particular landing with its lower compartment in response to odd landing hall calls while it is so stopped.

The disclosed system attempts to keep two cars parked with their compartments adjacent the upper and lower lobbies for serving intending passengers thereat. Moreover the system is arranged to attempt to keep at these lobbies one car whose lower compartment serves a particular intermediate landing to which restricted service is extended and one car whose upper compartment serves this particular landing. In the disclosed system the third landing is the intermediate landing to which restricted service is extended and by parking cars at the lobbies in the foregoing manner, a car which can serve the third landing is provided at both lobbies for passengers who desire to travel from either lobby to the third landing.

One of the cars at the lobbies is selected as the next to leave. As a result provision is made for transferring selection in case the selected car is not capable of serving the third landing with that one of its compartments which is adjacent the lobby level at which a passenger desiring to travel to the third landing is located. In such circumstances the registration of a hall call at either of the lobbies without the subsequent registration of a car call in one of the compartments of the selected car within a predetermined period causes a selection transfer operation to select the other car parked at the lobbies.

It is, therefore, another object of this invention to provide an elevator control system having multicompartment cars with an arrangement which parks two cars at the lobbies, one of which serves a particular intermediate landing with its lower compartment and the other of which serves that particular landing with its upper compartment, which selects one of the lobby cars as the next to leave and which is capable of transferring selection from one car to another upon an indication that a passenger at one of the lobbies desires to travel to that particular intermediate landing and that the selected car does not serve that landing with that one of its compartments which is adjacent the landing at which the passenger is located.

With restricted service extended to a particular intermediate landing through the provision of odd and even landing hall call registration devices at that landing and service' provided to that landing by the selected car at the lobbies, which can only answer either an odd or an even landing hall call, it is also desirable to transfer selection in case the selected car is not capable of answering a hall call registered at that particular intermediate landing.

It is, therefore, yet another object of this invention to provide an elevator control system having multicompartment cars with an arrangement which includes odd and even landing hall call registration devices at a particular intermediate landing, which parks two cars at the lobbies, one of which serves odd landing hall calls at that particular landing and the other of which serves even landing hall calls at that particular landing, which selects one of the lobby cars as the next to leave and which is capable of transferring selection from one car to another upon the registration at the particular intermediate landing of a hall call which the selected car is not capable of answering.

These and other objects, features and advantages of the present invention will be appreciated from the foregoing and the following description and appended claims when considered in conjunction with the drawing, in which,

FIGS. 1, 2, 3, 4, 6, 7 and 8 are a schematic wiring diagram in straight line form of a plurality of elevator control circuits;

FIG. 5 is a schematic wiring diagram of hall lantern circuits;

FIGS. 9 and 10 are schematic wiring diagrams of circuits of car call registration devices and associated control equipment;

FIGS. 11 and 14 are schematic wiring diagrams of circuits of hall call registration devices and associated control equipment;

FIGS. 12, l3, l5 and 16 are schematic wiring diagrams of circuits employed in conjunction with the circuits of FIGS. 11 and 14;

Claims

1. In an elevator control system for a building having a plurality of intermediate landings between two terminal landings; first hall call registration means located at one of said landings for registering hall calls indicating desired travel in a predetermined direction from said landing to a first group of landings; second hall call registration means located at said one landing for registering hall calls indicating desired travel in said predetermined direction from said landing to a second group of landings; a plurality of elevator cars each having a plurality of superimposed compartments for transporting passengers to and from said landings; and stopping means operating to stop said cars with given ones of said compartments adjacent said one landing in response to the registration of hall calls by said first and second hall call registration means.

2. In an elevator control system according to claim 1, stop prevention means operating both to prevent said stopping means from stopping a first one of said cars with a predetermined one of its compartments adjacent said one landing in response to the registration of a hall call by said first hall call registration means and to prevent said stopping means from stopping a second one of said cars with a predetermined one of its compartments adjacent said one landing in response to the registration of a hall call by said second hall call registration means.

3. In an elevator control system according to claim 2, car call registration means for each of said cars located in each of said compartments for registering car calls for travel to said landings; said stopping means operating to stop each of said cars with a given one of its compartments adjacent a landing in response to the registration Of a car call in said respective compartment for said landing; and car call registration prevention means operable to prevent the registration of car calls for said first group of landings in said predetermined one of said compartments in said first car when said car is stopped with said predetermined compartment located adjacent said one landing.

4. In an elevator control system according to claim 1, wherein said stopping means operates in response to the registration of hall calls by said first hall call registration means to stop a first one of said cars with a predetermined one of its compartments adjacent said one landing and in response to the registration of hall calls by said second hall call registration means to stop a second one of said cars with a predetermined one of its compartments adjacent said one landing.

5. In an elevator control system according to claim 4, car call registration means for each of said cars located in each of said compartments for registering car calls for travel to said landings; said stopping means operating to stop each of said cars with a given one of its compartments adjacent a landing in response to the registration of a car call in said respective compartment for said landing; and car call registration prevention means operable both to prevent the registration of car calls for said second group of landings in said predetermined one of said compartments in said first car when said car is stopped with said predetermined compartment located adjacent said one landing and to prevent the registration of car calls for said first group of landings in said predetermined one of said compartments in said second car when said car is stopped with said predetermined compartment located adjacent said one landing.

6. In an elevator control system for a building having a plurality of landings including two terminal landings and a plurality of intermediate landings identified as odd and even landings between said two terminal landings; hall call registration means located at said landings including odd hall call registration means located at one of said landings for registering hall calls indicating desired travel to an odd landing located in a predetermined direction from said one landing and even hall call registration means located at said one landing for registering hall calls indicating desired travel to an even landing located in said predetermined direction from said one landing; a plurality of elevator cars operable to travel in two directions between said landings, each car having an upper and a lower compartment superimposed on one another for transporting passengers to and from said landings; and stopping means operating to stop each of said cars with one of its compartments adjacent said landings in response to the registration of hall calls at said landings.

7. In an elevator control system according to claim 6, stop prevention means operating both to prevent said stopping means from stopping a first one of said cars at said one landing with its lower compartment adjacent said one landing in response to the registration of a hall call by said even hall call registration means and to prevent said stopping means from stopping a second one of said cars at said one landing with its upper compartment adjacent said one landing in response to the registration of a hall call by said odd hall call registration means.

8. In an elevator control system according to claim 7, car call registration means located in both the upper and lower compartments of each of said cars for registering car calls for travel to both even and odd landings; said stopping means including individual stopping apparatus for each of said cars, each operating to stop its respective car with a given one of its compartments adjacent a landing in response to the registration of a car call in said given compartment for said landing; and car call registration prevention means operable to prevent the registration of car calls for even landings in the lower compartmenT of said first car when said car is stopped with its lower compartment located adjacent said one landing.

9. In an elevator control system according to claim 8, wherein said car call registration prevention means is inoperable to prevent the registration of car calls for even landings in the lower compartment of said first car after said first car stops with its lower compartment adjacent a landing displaced from said one landing in said predetermined direction.

10. In an elevator control system according to claim 6, wherein said stopping means operates in response to the registration of hall calls by said even hall call registration means to stop a first one of said cars with its upper compartment adjacent said one landing and in response to the registration of hall calls by said odd hall call registration means to stop a second one of said cars with its lower compartment adjacent said one landing.

11. In an elevator control system according to claim 10, car call registration means located in both the upper and lower compartments of each of said cars for registering car calls for travel to both even and odd landings; said stopping means including individual stopping apparatus for each of said cars, each operating to stop its respective car with a given one of its compartments adjacent a landing in response to the registration of a car call in said given compartment for said landing; and car call registration prevention means operable both to prevent the registration of car calls for odd landings in the upper compartment of said first car when said car is stopped with its upper compartment located adjacent said one landing and to prevent the registration of car calls for even landings in the lower compartment of said second car when said car is stopped with its lower compartment located adjacent said one landing.

12. In an elevator control system according to claim 11, wherein said car call registration prevention means is inoperable to prevent the registration of car calls for odd landings in the upper compartment of said first car after said first car stops with its upper compartment located adjacent a landing displaced from said one landing in said predetermined direction and to prevent the registration of car calls for even landings in the lower compartment of said second car after said second car stops with its lower compartment adjacent a landing displaced from said one landing in said predetermined direction.

13. In an elevator control system according to claim 6, wherein said stopping means includes individual stopping apparatus for each of said cars; stop prevention means for each of said cars, certain of said stop prevention means operating to prevent the stopping apparatus associated with their respective cars from stopping said cars with their lower compartments adjacent said one landing in response to the registration of a hall call by said even hall call registration means, the remainder of said stop prevention means operating to prevent the stopping apparatus associated with their respective cars from stopping said remaining cars with their upper compartments adjacent said one landing in response to the registration of a hall call by said odd hall call registration means.

14. In an elevator control system according to claim 13, car call registration means located in both the upper and lower compartments of each of said cars for registering car calls for travel to both even and odd landings; said stopping apparatus for each of said cars operating to stop its respective car with a given one of its compartments adjacent a landing in response to the registration of a car call in said given compartment for said landing; and car call registration prevention means operable both to prevent the registration of car calls for odd landings in the upper compartment of each individual car which is prevented from stopping with its upper compartment adjacent said one landing in response to the registration of a hall call by said odd hall call registration means at least until said respective car stops while traveling in said predetermined direction with its upper compartment adjacent a landing removed from said one landing in said predetermined direction and to prevent the registration of car calls for even landings in the lower compartment of each individual car which is prevented from stopping with its lower compartment adjacent said one landing in response to the registration of a hall call by said even hall call registration means at least until said respective car stops while traveling in said predetermined direction with its lower compartment adjacent a landing removed from said one landing in said predetermined direction.

15. In an elevator control system according to claim 6, wherein said stopping means includes individual stopping apparatus for each of said cars; the stopping apparatus associated with certain of said cars operating in response to the registration of hall calls by said even hall call registration means to stop their respective cars with their upper compartments adjacent said one landing and the stopping apparatus associated with the remainder of said cars operating in response to the registration of hall calls by said odd hall call registration means to stop their respective cars with their lower compartments adjacent said one landing.

16. In an elevator control system according to claim 15, car call registration means in both the upper and lower compartments of each of said cars for registering car calls for travel to both even and odd landings; said stopping apparatus for each of said cars operating to stop its respective car with a given one of its compartments adjacent a landing in response to the registration of a car call for said landing in said compartment; and car call registration prevention means operable both to prevent the registration of car calls for odd landings in the upper compartment of each individual car which stops at said one landing in response to the registration of a hall call by said even hall call registration means at least until said respective car stops while traveling in said predetermined direction with its upper compartment adjacent a landing removed from said one landing in said predetermined direction and to prevent the registration of car calls for even landings in the lower compartment of each individual car which stops at said one landing in response to the registration of a hall call by said odd hall call registration means at least until said respective car stops while traveling in said predetermined direction with its lower compartment adjacent a landing removed from said one landing in said predetermined direction.

17. In an elevator control system according to claim 15, stop prevention means for each car, the stop prevention means associated with said certain of said cars operating to prevent the stopping apparatus associated with their respective cars from stopping said cars with their lower compartments adjacent said one landing in response to the registration of a hall call by said even hall call registration means and the stop prevention means associated with the remainder of said cars operating to prevent the stopping apparatus associated with their respective cars from stopping said cars with their upper compartments adjacent said one landing in response to the registration of a hall call by said odd hall call registration means.

18. In an elevator control system according to claim 17, car call registration means in both the upper and lower compartments of each of said cars for registering car calls for travel to both even and odd landings; said stopping apparatus for each of said cars operating to stop its respective car with a given one of its compartments adjacent a landing in response to the registration of a car call for said landing in said compartment; and car call registration prevention means individual to each car, each operable both to prevent the registration of car calls for odd landings in the upper compartment of its respective car at least until said car stops while traveling in said predetermined direction with its upper compartment adjacent a landing removed from said one landing in said predetermined direction and to prevent the registration of car calls for even landings in the lower compartment of its respective car at least until said car stops while traveling in said predetermined direction with its lower compartment adjacent a landing removed from said one landing in said predetermined direction.

19. In an elevator control system according to claim 18, wherein said car call prevention means of each car is individual to each compartment, said upper compartment means of each car being operable to prevent the registration of car calls for odd landings in the upper compartment of its respective car until said car stops while traveling in said predetermined direction with its upper compartment adjacent a given landing removed from said one landing in said predetermined direction in response to a hall call registered at said given landing and said lower compartment means of each car being operable to prevent the registration of car calls for even landings in the lower compartment of its respective car until said car stops while traveling in said predetermined direction with its lower compartment adjacent a given landing removed from said one landing in said predetermined direction in response to a hall call registered at said given landing.

20. In an elevator control system according to claim 19, wherein each of the stopping apparatus of said certain of said cars is inoperable to stop its respective car with either of its compartments adjacent said one landing in response to the registration of a hall call by said odd hall call registration means and each of the stopping apparatus of the remainder of said cars is inoperable to stop its respective car with either of its compartments adjacent said one landing in response to the registration of a hall call by said even hall call registration means.

21. In an elevator control system for a building having an upper and a lower lobby landing adjacent each other and an upper terminal landing displaced from said upper lobby landing by a plurality of intermediate landings at least some of which are identified as odd and even landings; hall call registration means located at each of said landings for registering hall calls indicating desired travel from said landings, said hall call registration means located at one of said landings including odd landing up hall call registration means for registering hall calls indicating desired travel from said one landing to higher odd landings and even landing up hall call registration means for registering hall calls indicating desired travel from said one landing to higher even landings; a plurality of elevator cars, each having two superimposed compartments one for serving primarily odd landings above said one landing and the other for serving primarily even landings above said one landing, each said car being capable of traveling up and down said building and providing service to said landings with its compartments; and call answering means individual to each car, each answering registered hall calls with the compartments of its associated car in response to the location of one of the compartments of said car adjacent a landing at which a call is registered, each call answering means of a first number of said cars answering odd landing up hall calls with the odd landing serving compartment of its associated car and each call answering means of a second number of said cars answering even landing up hall calls with the even landing serving compartment of its associated car.

22. In an elevator control system according to claim 21, wherein each of said first number of call answering means is inoperable to answer even landing up hall calls with either compartment of its associated car and each of said second number of call answering means is inoperable to answer odd landing up hall calls with either of the compartments of its associated car.

23. In an elevator control system according to claim 22, car call registration means located in each of the compartments in each of the cars for registering car calls for travel to both even and odd landings; each said call answering means operating to answer a car call registered in a given one of the compartments of its associated car in response to the location of said given compartment adjacent the landing for which said car call is registered; and odd and even compartment car call registration prevention means individual to each car, each said odd compartment means being operable to prevent the registration of car calls for even landings in the odd landing serving compartment of its associated car while the respective car is traveling up until it answers a hall call with its odd compartment at a landing above said one landing and each said even compartment means being operable to prevent the registration of car calls for odd landings in the even landing serving compartment of its associated car while the respective car is traveling up until it answers a hall call with its even compartment at a landing above said one landing.

24. In an elevator control system according to claim 23, wherein said hall call registration means includes up hall call registration means at each landing from which up travel is possible in said system and down hall call registration means at each landing from which down travel is possible in said system; control means operating in the absence of registered calls which a particular one of said cars can answer to enable said car to stop movement and to remain at rest with each of its compartments adjacent a different intermediate landing at each of which an up and a down hall call registration means is located; and call answering delaying means operating in response to the answering by one of the compartments of said one car of a hall call for one direction of travel registered at the landing adjacent said one compartment and delayed for at least a predetermined period of time the answering by the other compartment of said one car of a hall call for the other direction of travel registered at the landing adjacent said other compartment.

25. In an elevator control system according to claim 21, call answering prevention means individual to each car, each said prevention means of said first number of cars operating to prevent the call answering means of its associated car from answering odd landing up hall calls with its even landing serving compartment and each said prevention means of said second number of cars operating to prevent the call answering means of its associated car from answering even landing up hall calls with its odd landing serving compartment.

26. In an elevator control system according to claim 25, car call registration means located in each of the compartments in each of the cars for registering car calls for travel to said landings including both even and odd landings; each said call answering means operating to answer a car call registered in a given one of the compartments of its associated car in response to the location of said given compartment adjacent the landing for which said car call is registered; odd and even compartment car call registration prevention means individual to each car, each said odd compartment means being operable to prevent the registration of car calls for even landings in the odd landing serving compartment of its associated car while the respective car is traveling up until it answers a hall call with its odd compartment at a landing above said one landing and each said even compartment means being operable to prevent the registration of car calls for even landings in the even landing serving compartment of its associated car while the respective car is traveling up until it answers a hall call with its even compartment at a landing above said one landing.

27. In an elevator control system according to claim 26, wherein each of said first number of call answering means is inOperable to answer even landing up hall calls with either compartment of its associated car and each of said second number of call answering means is inoperable to answer odd landing up hall calls with either of the compartments of its associated car.

28. In an elevator control system for a building having a plurality of intermediate landings between two terminal landings; up and down hall call registration means located at said landings for indicating desired travel from said landings in each direction in which travel is possible in said system from each landing; an elevator car having a plurality of superimposed compartments, each for transporting passengers to and from said landings; hall call answering means operating to cause said car to answer a hall call registered at a landing in response to the location of a compartment adjacent said landing; control means operating in the absence of registered calls to enable said car to stop movement and to remain at rest with each of its compartments adjacent a different intermediate landing at each of which an up and a down hall call registration means is located; and answering delaying means operating in response to the answering of a hall call for one direction of travel registered at a landing adjacent one compartment and delaying for at least a predetermined period of time the answering of a hall call for the other direction of travel registered at a landing adjacent another compartment.

29. In an elevator control system according to claim 28, wherein said hall call answering means includes call cancellation means cancelling a hall call in response to the answering of said call and said answering delaying means operates to delay said call cancellation means from operating for at least said predetermined period of time to cancel said hall call for said other direction of travel registered at said landing adjacent said other compartment.

30. In an elevator control system according to claim 29, wherein a hoistway door is provided for each landing and a compartment door is provided for each compartment, each compartment door cooperating with said hoistway doors for permitting passengers to transfer to and from its associated compartment; door control means operating in response to the operation of said hall call answering means to open both the door of the compartment located adjacent the landing at which said call is registered and the hoistway door at that landing; and said answering delaying means operates to delay said door control means from operating for at least said predetermined period to open the hoistway door at the landing adjacent said other compartment and the compartment door thereof unless a hall call is also registered at the latter landing for the same direction of travel as said answered hall call.

31. In an elevator control system according to claim 30, direction establishing means establishing a preferred direction of travel for said car in response to the registration of a hall call, said direction establishing means enabling said hall call answering means to answer a registered hall call only if the direction of travel is established corresponding to the desired direction indicated by said hall call.

32. In an elevator control system for a building having a plurality of landings, each having a hoistway door, up and down hall call registration means located at said landings for use by intending passengers in indicating desired travel from said landings in each direction in which travel is possible in said system from each of said landings; an elevator car having an upper and a lower compartment, each adapted to carry passengers to and from said landings and each having a door cooperating with said hoistway doors for permitting passengers to transfer to and from it; car control means causing said car to operate in response to registered calls and to stop operating and to remain at rest with each of its compartments located adjacent a different intermediate landing provided no call is registered to whIch it can respond; said car control means including car starting means starting said car when so at rest to travel up in response to the registration of a hall call at a landing above the location of said upper compartment and to travel down in response to the registration of a hall call at a landing below the location of said lower compartment; call answering means operating when said car is so at rest to cause said car while it remains at rest to answer a hall call indicating a desire for travel in either direction registered at either landing adjacent which one of said compartments is located; and door control means operating in response to the operation of said call answering means to open both the hoistway door at said landing and the door of the compartment located adjacent said landing.

33. In an elevator control system according to claim 32, wherein said car control means includes direction establishing means operating to prevent said call answering means from operating in response to a registered call until a preferred direction of travel is established for said car in the direction indicated by said call.

34. In an elevator control system for a building having a plurality of landings at least some of which are identified as even and odd landings; an elevator car having a plurality of superimposed compartments; said car being capable of traveling up and down said building and stopping with its compartments adjacent said landings to provide service thereto; hall call registration means at each of said landings for operation by intending passengers in registering calls for service from said landings; hall call answering means answering a hall call registered at a landing in response to the location of a compartment adjacent said landing; car call registration means for each of said compartments for operation by passengers in registering calls for travel to said landings; car call registration prevention means operable in response to each of said compartments being located adjacent a landing for preventing the operation of certain of said car call registration means in each of said compartments.

35. In an elevator control system according to claim 34, wherein said elevator car has an upper and a lower compartment, each of which includes car call registration means for registering calls for both even and odd landings and said car call registration prevention means is operable to prevent the registration of car calls for odd landings in one of said compartments and for even landings in the other of said compartments.

36. In an elevator control system according to claim 35, wherein said landings include an upper and a lower lobby landing adjacent each other and said car call registration prevention means is operable in response to said upper and lower compartments being located adjacent said upper and lower lobby landings, respectively, and until said car travels in the up direction and stops with one of its compartment adjacent a landing above the upper lobby landing.

37. In an elevator control system according to claim 36, wherein said car call registration prevention means includes separate means for the upper and the lower compartments, said upper compartment means being operable to prevent the operation of predetermined ones of said upper compartment car call registration means until said car stops with its upper compartment located adjacent a landing above the upper lobby and answers a hall call registered at said landing above; and said lower compartment means being operable to prevent the operation of predetermined ones of said lower compartment car call registration means until said car stops with its lower compartment located adjacent a landing above the upper lobby and answers a hall call registered at said landing above; both said upper and said lower compartment means being rendered inoperable when said car is prepared for travel in the down direction notwithstanding either or both compartments did not answer a hall call or calls above said upper lobBy.

38. In an elevator control system according to claim 20, selection means operating in response to one of said certain of said cars and one of the remainder of said cars both with one of their compartments located adjacent one of said terminal landings and selecting one of said cars as the next to leave said terminal landing; and selection transfer means operable to transfer selection from said selected car to the other upon the registration of a hall call at said one landing for which the stopping apparatus of the selected car is inoperable to stop its respective car.

39. In an elevator control system according to claim 22, control means operating to cause one of said first number of cars and one of said second number of cars to park each with its compartments located adjacent said upper and lower lobby landings; selection means selecting one of the cars parked at said lobby landings as the next to leave; and selection transfer means releasing the selection of a selected car and causing the selection of the other car upon the registration of the odd or the even landing up hall call which the call answering means of the selected car is inoperable to answer.

40. In an elevator control system according to claim 27, control means operating to cause one of said first number of cars and one of said second number of cars to park each with its compartments located adjacent said upper and lower lobby landings; selection means selecting one of the cars parked at said lobby landings as the next to leave; and selection transfer means releasing the selection of a selected car and causing the selection of the other car upon the registration of the odd or the even landing up hall call which the call answering means of the selected car is inoperable to answer.

41. In an elevator control system according to claim 2, selection means selecting said first or said second car as the next to leave one of said terminal landings upon each having one of its compartments located adjacent thereto; hall call registration means at said one terminal landing for registering hall calls indicating desired travel from said terminal landing toward said one landing; circuit means operating in response to the registration of a hall call at said one terminal landing and indicating desired travel to said one landing; and selection transfer means operable to transfer selection from the selected car to the other of said first or second cars upon the operation of said circuit means when the compartment of the selected car which is adjacent said terminal landing is prevented from stopping at said one landing.

42. In an elevator control system according to claim 2, selection means selecting said first or said second car as the next to leave one of said terminal landings upon each having one of its compartments adjacent thereto; hall call registration means for registering hall calls indicating desired travel from said terminal landing toward said one landing; car call registration means in each compartment of each of said first and second cars for registering car calls for travel to said intermediate landings; and selection transfer means operable to transfer selection from the selected to the other of said first or second cars upon the registration of a hall call at said terminal landing and the absence of a registered car call in either compartment of said selected car for a predetermined period.

43. In an elevator control system according to claim 17, selection means operating in response to one of said certain of said cars and one of the remainder of said cars both with one of their compartments located adjacent one of said terminal landings and selecting one of said cars as the next to leave said terminal landing; hall call registration means at said one terminal landing for registering hall calls indicating desired travel from said terminal landing toward said one landing; circuit means operating in response to the registration of a hall call at said one terminal landing and indicating desirEd travel to said one landing; and selection transfer means operable to transfer selection from the selected car to the other upon the operation of said circuit means when the compartment of the selected car which is adjacent said terminal landing is prevented from stopping at said one landing.

44. In an elevator control system according to claim 17, selection means operating in response to one of said certain of said cars and one of the remainder of said cars both with one of their compartments located adjacent one of said terminal landings and selecting one of said cars as the next to leave said terminal landing; hall call registration means at said one terminal landing for registering hall calls indicating desired travel from said terminal landing toward said one landing; call answering means individual to each car, each answering hall calls with the compartments of its associated car in response to the location of one of the compartments of said car adjacent a landing at which a call is registered; car call registration means located in each of the compartments in each of the cars for registering car calls for travel to said landings; car call responsive means operating in the absence of the registration of a car call in either compartment of said selected car to prevent the answering of a hall call at said terminal landing when the compartment of the selected car located adjacent said terminal landing is prevented from stopping at said one landing; and selection transfer means operating to transfer selection from the selected car to the other in response to the continued registration of an unanswered hall call at said terminal landing for a predetermined period.

45. In an elevator control system according to claim 26, control means operating to cause one of said first number of cars and one of said second number of cars to park each with its compartments located adjacent the upper and lower lobby landings; selection means selecting one of the cars parked at the lobby landings as the next to leave; each said even compartment car call registration prevention means of said first number of cars operating to prevent the registration of a car call for said one landing in its respective compartment while its associated car is parked; each said odd compartment car call registration prevention means of said second number of cars operating to prevent the registration of a car call for said one landing in its respective compartment while its associated car is parked; car call responsive means operating in the absence of the registration of a car call in either compartment of the selected car to prevent the answering of a hall call at a particular lobby landing when a car call for said one landing is prevented from being registered in the compartment of the selected car located adjacent said particular lobby landing; and selection transfer means operating to transfer selection from the selected car to the other in response to the continued registration of an unanswered hall call at said particular lobby landing for a predetermined period.

46. In an elevator control system for a building having a plurality of landings including a first group of landings and a second group of landings; first hall call registration means located at one of said landings for registering hall calls indicating desired travel in a predetermined direction from said landing to one of said first group of landings; second hall call registration means located at said one landing for registering hall calls indicating desired travel in said predetermined direction from said landing to one of said second group of landings; a plurality of elevator cars each of which is capable of serving each of said landings; and stopping means operating to stop said cars selectively at said one landing in response to the registration of hall calls by said first and second hall call registration means, whereby certain of said cars stop at said one landing in response to the registration of hall calls by said first hall call regiStration means and the rest of said cars stop at said one landing in response to the registration of hall calls by said second hall call registration means.

47. In an elevator control system according to claim 46, wherein said stopping means are incapable of stopping said certain of said cars in response to the registration of hall calls by said second hall call registration means and said rest of said cars in response to the registration of hall calls by said first hall call registration means.

48. In an elevator control system according to claim 47, car call registration means located in each of said cars for registering car calls for travel to said landings; said stopping means operating to stop each of said cars at a landing in response to the registration of a car call in that car for that landing; and car call registration prevention means operable both to prevent the registration of car calls for said second group of landings in each of said certain of said cars when the respective car is stopped at said one landing and to prevent the registration of car calls for said first group of landings in each of said rest of said cars when the respective car is stopped at said one landing.

49. In an elevator control system according to claim 47, wherein each of said cars has an upper and a lower compartment for transporting passengers to and from said landings and said stopping means stops said certain of said cars with their upper compartments adjacent said one landing in response to the registration of hall calls by said first hall call registration means and stops said rest of said cars with their lower compartments adjacent said one landing in response to the registration of hall calls by said second hall call registration means.

50. In an elevator control system according to claim 16, for a building having an upper and a lower lobby landing adjacent each other and so separated as to enable the upper and the lower compartments of each car, respectively, to serve said lobby landings simultaneously, wherein said car call registration prevention means operates to prevent the registration of a car call for said one landing both in the lower compartments of said certain cars while said compartments are adjacent said lower lobby and in the upper compartments of the remainder of said cars while said upper compartments are adjacent said upper lobby and including insufficient lobby car circuitry which operates to cause one of said certain cars to travel to the lobbies if none of said certain cars is located thereat and to cause one of said remainder of said cars to travel to the lobbies if none of said remainder of said cars is located thereat.

51. In a control system according to claim 50, excessive lobby car circuitry operating in response to the location at said lobbies of a number of said cars in excess of one of said certain cars and one of said remainder of said cars and causing the excess of said cars to leave said lobbies until only one of said certain cars and one of said remainder of said cars is located thereat.