DEO0001203MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: October 2, 1950. Advertised on May 9, 1956

GERMAN PATENT OFFICE

The invention relates to elevator systems and, more particularly, to those requiring starting of the flag chair after each stop under the control of an elevator eater located in the elevator stands while the elevator is stopped automatically, namely, with regard to the Heriaus-Iassems of passengers depending on the driving seat control bodies, which are operated by the elevator operator on the instructions of the passengers, and subsequently the reception of passengers depending on the Stoökwerkste'uerorganen, which are controlled by the waiting passengers can be operated by themselves. There are two control organs on the mezzanine floors arranged, namely a Aufwär.tseteuerorgan for an upward intending passengers and another descent controller for the passengers intending to descend. When controlling a plurality of, elevators is applied, the floor controls act on all elevators together. Usually push buttons are used for these elevator and floor controls. This When pressed, push buttons close contacts which actuate control relays and thus release of the push button. It is also common to use hand operated switches for the contacts of others Tax measures, e.g. B for closing the door and starting the elevator. There are certain advantages to controlling the circuits electronically. .

Electronic discharge devices for setting an elevator to a floor are already known from German patents 542 672 and 644 357.

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The invention is also concerned with the formation of an electronic elevator control. It is based on a control system for an elevator with means for slowing down of the elevator on elevator-operated floors and means for subsequently stopping the Elevator on such floors, with electron tubes are used, and is primarily characterized by the fact that the call storage takes place for the floors by means of control circuits which are assigned to the floors Put the tubes into operation, and that the means · to slow down and preferably also to stop the elevator movement when approaching those floors can be controlled for the electronic Call storage is present.

In a preferred embodiment of the invention, the anode-cathode circuit each tube a loading member, e.g. B. a resistor, connected to a power source, and the means for slowing down and / or the means for The elevator will stop due to the voltage drop controlled on these load members. The working group for the tube is in further embodiment of the invention by hand and in particular as a function of the touch controlled by one person. For this purpose, in the aforementioned tube circuit, at which in the anode-cathode circuit are a load element and a current source, a tube with a cold Used cathode and causing it to ignite, causes the tube for the purpose of Albrückenden actuation from a person's contact with a source of Wedhselstrom or quarreling

(or pulsating) direct current is connected.

Such tubes that respond to the touch

are on the floors for the purpose of actuation by waiting passengers and preferably also in the ferry chair for each floor for the purpose of actuation by the. Elevator operator provided. These tubes are gas tubes with a cold cathode, the circles of which are designed in such a way that they ignite when touched by hand and remain conductive, thereby storing the call and enabling the contact to be interrupted. When the call is answered, the voltage between the anode and cathode of the tube is reduced below the hold level and the tube goes out, canceling the call. Similar control bodies are available in the elevators to control other measures, for example to start the elevator, to open and close the doors, to drive through to floors for which calls are stored from the floors, and also to change the direction of travel of the elevator on mezzanine floors. Some of these controllers ©, ¹ ζ. Β. for closing the door, for starting and for reversing, can be designed in such a way that the tube only remains conductive as long as the contact lasts, or, in the case of the starting control, only until the elevator has started moving .

If a call is stored in a tube,

then it controls the call recording and call cancellation circuits and the initiation of elevator deceleration. The invention is applied below to a system in which an ascending car makes a down call answered by a mezzanine floor if no up call is stored for this floor and there is no call for the floors above, and then moving in the downward direction is set. This measure is usually called the highest recall. The invention aims to will also be described as applied to a system in which an elevator going up is stopped on a floor on the basis of a downward call beyond the predetermined Time remained saved. This process * »is known as a time-limited priority call. In this case, too, the tubes in which "the calls are stored" directly control the circuits for highest callback and time-bound priority * \ call.

The electron tube itself is used to create a lighting display for the desired measure is carried out. In the case of the control organs for storage, this shows that Passenger and in the case of elevator calls to the elevator operator that the calls have been saved! who are. With certain arrangements where elevators are placed on both sides of the corridor it is desirable to have controls on both sides of the corridor on each floor to be provided. The system described later sees such controls on both sides of the corridor before, wherein the circles are designed such that the storage of the call by touch of a control organ on (one or the other side of the corridor also the lighting up of the Tube of the corresponding control organ on the other side of the corridor. This will a visible display on both sides of the corridor generates that the call is stored.

It sometimes happens that a call is stored for a floor, actually for dais no stop is desired to let a passenger out. The system provides that this Can throw reputation by touching it.

The electron tubes of the various control organs can be activated either by touching the tube piston o / that of an actuator, for example a button, which is preferably immovably connected to the tubular piston, are ignited. The latter arrangement is preferred because of its various advantages and above all Passengers and elevator operators have become used to operating buttons. The button can be made of conductive material of high or low resistance or of material with .high * Dielectric constant exist. The tube and button can also be shielded against undesired actuation being.

In the drawings mean

Fig. Ι a simplified schematic representation a system with two elevators according to the invention,

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Fig. 2, 3 and 4 taken together a united

'f eighth wiring diagram of the power and Control circuits for one of the elevators in FIG. 1, with certain circuits common to both elevators are,

Fig. 2 s, 3 s and 4 s key blades for Figs. 2, 3 and 4, where d (ie electromagnetic Switches are shown in spindle form, and

Fig. 2a and 3a taken together, the control circuits for another elevator of Fig. 4, accordingly those of Figs. 2 and 3 for the first elevator.

The key blades shown in Figs. 2 s, 3 s and 4 s are intended to be used in the ^ extensive circuit diagram of Fig. 2, 3 or 4 z. B. to find a certain circuit element faster, to make the circuit easier to understand, etc. On their long, vertical lines or ^ spindles are z. B. for each relay the Wickhingen and contacts drawn in the altitude in which they appear on the actual Schaltsdhetna of Fig. 2, 3 or 4, 5 or 6, if you align the circuit diagram and key blade according to each other horizontally. So in order to find a specific winding or a specific contact, etc., one runs on the vertical spindle, which bears the switch or relay designation, down to the point where the symbol of the specific winding is. From this reference point, you then move in a horizontal line to the actual switching diagram, on which the switching element you are looking for can then be easily found. For example, we are looking for the contacts H 2. They are first found on the key blade 3 s on the Η spindle at the location with the number 2. If one then goes horizontally to FIG. 3 at the level of this reference point H 2, one finds the Contacts in the circuit diagram of this figure slightly, to the right of the winding DG. For a general understanding of the invention, FIG. 1 is used, in which two elevators EL 1 and EL 2 are shown for the operation of four floors Fi, F2, Fj) and F4 . Each elevator is moved up and down with HiMe of an elevator motor 1, which drives a cable drum 2 over which the conveyor ropes 3 for the elevator and the counterweight 4 run. An electro; magnetic brake 5 is used to carry out the ^; Stopping and holding the stationary driving chair.

Every elevator is equipped with an operating

: box 6 provided in which a plurality of through

the elevator operator operable controls is arranged. There are a plurality of these of call storage organs, furthermore referred to as elevator buttons, for each floor one, a start-up device which is also referred to as a start-up button, and a door-closing and door-opening button designated door controls

i6o is still called a control unit as a passage button and reversing control members also referred to as reversing and Albwärts reversing buttons.

\ These buttons are indicated in the wiring diagram and will be discussed later. The call storage organs Ui, U2, [/ 3, D2, D3, DT and Ui ', U2', D 2 ', Ui', D 3 ', DT' on the floors, which are to be referred to as floor buttons, are as two Shown assigned to elevator shafts, which is intended to serve as a model for an elevator system with elevators arranged in groups on both sides of the corridors. For each shaft, an up and a down floor button are provided on each mezzanine floor. In the end floors there is only one floor button for each shaft. The various control and force circuits are shown schematically in the wiring diagrams. FIGS. 2 and 3 show the circles assigned to an elevator for the four floors with regard to call storage, call recording, highest call, brake starting and call cancellation. Fig. 4 shows additional control circuits and the power circuits for this elevator. In the presence of a plurality of elevators, the circles for the hold call storage and for various associated circles are common to all elevators, and the circles shown in Figs. 2, 3 and 4 as belonging to one elevator are provided for the other elevators, as shown in FIG FIGS. 2 a and 3 a can be seen, in which the circles corresponding to FIG. 4 for the second elevator are not shown, but are the same. Therefore, in FIGS. 2a and 3a, those parts which correspond to the parts shown in FIGS. 2 and 3 are denoted with the same numbering and with the addition α.

Unless otherwise stated, the following description refers to the FIGS. 2, 3 and 4 circles shown. In order to facilitate the presentation of the application of the invention, a simplified tax system was presented. Of course others can Control and safety organs are added when setting up the system, and the system can be changed in many ways. The electromagnetic switches shown in the system are designated as follows:

BK braking resistor switch

DC door lock switch

DD downward direction switch DG directional hold switch

DGX auxiliary direction switch

DO door opening switch

B speed switch

EX auxiliary ^{speed switch 1X} 5

H field and brake switch

HI Highest call switch

HLS Highest call light switch

HR Highest call reversal switch

KR travel switch PM locking magnet

SO actuation sequence switch

UD upward direction switch

XA delay relay for the speed switch

XY switch for not canceling the hold call

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In the following description, the. Windings of the above-mentioned switches are denoted by these letters and the switch contacts are also denoted with the addition of reference numbers. Accordingly, (for example, the winding of the electromechanical brake is referred to as BR and the contacts it actuates with BR ι. Letters are also used to denote other switches and elements of the control system.

ίο In certain cases, e.g. with the floor buttons, these elements are arranged on the floors. In such cases, the differentiation of the floors is carried out in such a way that digits are added to the letters according to the floor numbering, whereby the top floor is marked with the letter T in place of a number The circles are shown as "continuous" or "across the network" with the windings and contacts of the various switches separated in such a way that the circles are as simple and direct as The relationships between these windings and contacts can be seen in Figures 2s, 3s and 4s, in which the switches are arranged in alphabetical order and the windings and contacts on spindles are in horizontal alignment with the corresponding elements of the wiring circuit Switches are in the de-energized state and the directional hold switch designed as a blocking switch holder DG shown in the unlocked state.

In Figs. 2 and 3, the up-floor buttons are denoted by U and the down-floor buttons are denoted by D. In Figs. The buttons of the one shaft are marked with a 1 to distinguish them from those of the other. In a system with a large number of elevators, regardless of whether they are arranged in a single or in a double shaft, all elevators have common push buttons. The elevator buttons are labeled C. .

The starter button is marked with SB, the door lock button with DCB, the door opening button with DOB, the passage button with NSB, the up-reversing button with URB and the down-reversing button with DRB .

A plurality of additional touch controls is provided on the control box in the elevator, one for each floor above the ground floor, in order to manually delete the calls stored for the corresponding floors if no stop for a passenger is desired. These control units are referred to below as call canceling buttons in the elevator and are designated with CC . A corresponding touch control tube is provided for the drive-through button, which is to be referred to in the following drive-through release button and referred to as NSRB.

The electron tubes of the touch buttons mentioned so far are gas tubes with a cold cathode, especially of the type in which a wire anode is right up close to the glass body of the

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Tube extends such. B. an RCA 1C21 and Western Electric 313 C. These tubes are arranged so that they can be touched near the anode or, if a fixed button needs to be touched, it is connected to the tube piston near the anode. The tubes of this type are three-electrode tubes with an anode, a cathode and a control electrode, which should be designated as AN, CA and GD for the floor button D 3, for example. The 'control electrode is used to control the associated tube on the other side of the corridor. If a single well with floor buttons is used, the control electrodes are connected to the cathodes. This is also the case for all elevator buttons for the Stockyerke above the first floor, as well as for the ferry chair buttons for call cancellation, approach, passage, turn around and door opening. As a result, the control electrodes are not shown in these circles. If necessary, the tubes with only two electrodes can also be used for this.

Other electron tubes are also used in the system, including those in the Rifraception and hold initiation circuits. There are two such tubes, namely one labeled CCP for elevator calls and one labeled LCP for landing calls. Furthermore, a tube is provided in the circles in order to automatically delete them when answering calls stored by Stoekwerkknobs. This tube is referred to in the following as a landing call extinguishing tube and is referred to as LCC. Furthermore, a tube is provided in the maximum call return circuits, which is to be called the highest call return tube and is to be referred to as HCR. The CCP, LCP, LCC and HCR tubes are preferably cold cathode gas tubes of the RCA OA 4 G type.

The tube TP2 used in the time priority circuits for the second floor is a thyratron like the RCA 2050.

In each elevator there is a plurality of elevator position indicator lamps, one for each floor. They are shown as glow lamps and are generally referred to as PC . The elevator level indicator can be arranged in the elevator or on the starter board (Fig. 1) or in both places.

To display the calls stored by the Stoekwerk buttons, there are indicator lamps for waiting passengers that act as glow lamps? dar- _; and are generally designated with WPU for | fcA.uf- u-5 forwards call and with WPD for downwards call. In control systems of the present type, the passenger waiting indicator is usually common to all elevators and is located on the starter board (FIG. 1). , 121

There are also a plurality of rectifiers, generally designated V , of which a very large number are used to prevent significant current flow in one direction in DC circuits. Certain of these DC blocking rectifiers for each floor

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. one, are present in the circles controlled by the elevator buttons and are labeled VC. Certain other direct current blocking rectifiers, one for each intermediate storey, are located in the top floor call circle and are labeled VHL. Certain other DC blocking rectifiers, one for each pair of down-floor buttons and one for each pair of up-floor buttons, are provided in the lines connecting those floor buttons to the top floor call circuit. The rectifiers in the connecting lines of the downstairs button are labeled VD and those for the upstairs buttons are labeled VU. Selenium rectifiers have proven to be suitable for these circles. Other rectifiers used in the circles will be mentioned later.

ao A plurality of resistors, generally denoted R , are present. Some of the same are used as astungs resistors in the anode-cathode circuits of the tubes for the elevator buttons and floor buttons. The load resistances for the elevator button tubes are labeled RC. The load widths for the tubes of the upstairs floor buttons are labeled RU and those for the downstairs floor buttons with RD. Furthermore, resistors are provided in the anode-cathode circuit of the tubes for the Fährstuhlnuflöschkriöpf. They serve as protective resistors and are designated with RCC . Similar protective resistances are provided in the circles for the control electrodes of the tubes for the floor buttons. They are labeled RUG with respect to the upstairs floor buttons and RDG with respect to the downstairs floor buttons, their distinction with respect to the corridor sides being the same as for the floor buttons. Protective resistors are also in the circles for. the indicator lamps are provided for waiting passengers, with those for passengers wanting upwards being referred to as RWU and those for passengers wanting to go downwards being referred to as RWD. Furthermore, a protective resistor is provided for the elevator indicator lamps, which is common to all lamps and is designated RCP. In the anode and cathode circuits for the tubes of the holding buttons, balancing resistors are provided in order to activate the tube of corresponding buttons on both sides of the corridor in parallel. The resistors assigned to the upstairs floor buttons are labeled RUE and those assigned to the downstairs floor buttons are labeled RDE, with the distinction between the corridor sides being made in the same way as in the case of the floor buttons. RUR2 is a protective resistor for the anode-cathode circuit of the tube of the reverse button URB, while RD R 2 is a corresponding protective resistor for the anode-cathode circuit of the tube of the reverse button DRB . RDOi and RDO 2 are protective resistors for the anode-cathode circuits of the tube for the door opening button DOB. RNSR is a protective resistor for the anode-cathode circuit of the tube for the passage release button NSRB. RLCP is a protective resistor for the anode-cathode circuit of the LCP tube, which also serves as a protective resistor for the anode-cathode circuit of the tubes for the passage button NSB . RCCP is a protective resistor for the anode-cathode circuit for the CCP tube. RDCP is a protective resistor in a circle for the control electrode of the tube of the door lock button DCB, while DRCT is a resistor in a circle to connect this electrode to the tube cathode. RCGP is a protective resistor in a circle for the control electrodes for the tube of the elevator button C ι for the first floor, while RCGT is a resistor in a circle that connects this electrode with the associated tube cathode. RLPP, RCPP, RHCP and RLGP are protective resistors in the circuits for the control electrodes of the tubes LCP, CCP, HCR and LCC. RLPT, RCPT, RHCT and RLTC are resistors in the circuits that connect the control electrodes and cathodes of the tubes LCP, CCP, HCR and LCC . RLCC is a load resistor in the anode-cathode circuit for tube LCC, while resistors RLCD 1 and RLCD 2 together form a voltage divider for determining the voltage applied to the anode-cathode circuit of this tube. RSB is a resistance in a circle, which allows the elevator operator to give up touching the start button without interrupting the elevator movement. RACC is a resistor in a circle for the automatic deletion of elevator calls when they are answered, whereby load resistors of smaller capacity can be used for the elevator buttons. Further resistances used in the circles will be reported later.

A plurality of capacitors, generally designated Q , are provided. Certain with. Capacitors labeled QC are located in the call cancellation circuits for the elevator buttons. There are certain other capacitors in the circles for the tubes of the stop buttons, those for the upstairs buttons being labeled QU and those for the downstairs buttons QD, which are differentiated for the purpose of differentiating the two sides of the corridor, just as in the case of the floor buttons. QCC is a capacitor in a circuit that is common to all elevator call canceling buttons and has to do with extinguishing the tube of the elevator call canceling button when one is touched to manually cancel an elevator call. QNSR is a capacitor that serves a similar purpose on the pass-through release buttons. QNS, QPM, QDO, QDR and Q UR are voltage absorbing capacitors to prevent unwanted ignition of the tubes due to voltage surges when the anode-cathode circuits for the tubes are closed.

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The capacitor QCU and the impedance IC are used to avoid undesired ignition of the tubes for the elevator buttons and the elevator call cancel buttons when the switch IS is closed. RUR ι is a resistor to move the tube of the button URB against the. Discharge to protect the QUR capacitor when the tube begins to conduct. The resistance RDR ι serves the same purpose with respect to .auf

ίο Tube of the button DRB, while the winding DO serves the same purpose for the tube DOB and the winding PM serves the same purpose for the tubes CCP and LCP , whereby in the case of the tube CCP the resistor RCCP and in the case of the tube LCP the resistor RLCP helps. Other capacitors used in the circles should be mentioned later.

Devices are used in the electronic control circuits of each elevator that are in

so operated depending on the elevator movement will. Such a device may take the form of a floor selector 9, as in FIG. 1 is shown. Each voter is preferably driven by means of a belt 10 which is on Elevator and is attached to the counterweight and engaging with the teeth of the selector drive wheel 11 Teeth is provided. The selector has a cross head 12 which is driven by a spindle 13 is driven. This spindle is in turn via bevel gears 14 of a chain and a Chain wheel and one of the drive wheel 11 supporting Shaft driven, so that the cross head 12 moves in "function of the Fährstuhlibewbewegung will. The crosshead 12 carries a carriage 15 on which the control device for the circles, as to Call recording, maximum call, stop initiation and call cancellation, is arranged. Is on the wagon also arranged a device with which the elevator when starting a stop for a Floor is caused to slow down at a certain distance in front of the floor begin and stop once the floor is reached. The carriage 15 is when starting of the elevator from a neutral position with respect to the crosshead 12 and moved ahead stopped after a certain amount of this movement. Then the car moves together with the cross head that moves with the elevator. Once a. Circle closed is to cause a stop, the carriage 15 is stopped. This can be either while advancing for facilities above a certain speed or take place during the joint movement of carriage and crosshead. Then the Crosshead 12 on the projection of the car so that when the elevator stops, the car is back in the neutral position. This reciprocal movement of carriage and crosshead becomes part of it used to control the slowing down and stopping of the elevator.

The advance of the carriage 15 is effected with the aid of a torque motor, which will be referred to below as the advance motor. The circles of this motor designated by AM can be seen in FIG. The energization of the advance motor is regulated by contacts that are actuated by the pawl magnet PM. The circles for this magnet appear in FIGS. 2 and 4. The magnet has two windings, namely a working winding and a further attracting winding. When actuated, the magnet is locked in the working position, for example by a permanent magnet core, and remains in it until the attracting winding is energized. The pawl magnet controls the release and retraction of the carriage-carried pawls to interact with stop tabs. For each floor, a stop tab is arranged on a floor pole, and the floor poles are arranged at a distance from one another in accordance with the distance between the floors assigned to the individual tabs. When starting up, the pawl magnet is energized to retract the pawls and in doing so it closes the contacts to energize the lead motor. When the carriage moves ahead, the lead motor simultaneously closes selector switches, which are designated in FIGS. 3 and 4 with 3 LS, 2 LS and ι LS . When a stop is initiated, the pawl solenoid is energized and the lock is released. As a result, the lead motor is de-energized and the pawls are released to act on the stop tabs. The pawl for the direction in which the elevator is moving touches the stop tab for the floor for which the stop was initiated and stops the elevator. The crosshead continues its movement and, as a result of its relative movement in relation to the car, causes the selector switches 3 LS, 2 LS and 1 LS to open in order to slow down and stop the elevator. Moving brushes are carried by a strip of the car and work together with contacts for the various floors that are fixedly attached to the floor poles. The bar also carries a control surface which is able to interact with hook switches arranged on the floor catches for the various floors. When the elevator is stopped on a floor, the brushes are engaged with their associated stationary contacts for that floor and the control surface is in contact with the hook switch for that floor. Since they are on the leading bar, the brushes and the control surface are moved forward when the ferry chair starts, engaged with their contacts and the hook switch for one floor is locked by a pawl when a stop is initiated and held in this state when the lead is picked up while the car is coming to the floor. The trolley also carries a switch which is operated by trough-shaped control surfaces on the floor poles for

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attached to each floor. A brush and control surface are on one carried by the crosshead Bar attached so that they are not advanced by the advance motor. This brush and these control surfaces are for contacts and hook switches attached to the floor poles to touch. These brushes, control surfaces, stationary contacts and hook switches are in the Wiring diagram shown and come to the

ίο larger part also in Fig. 2.

As can be seen in particular from FIG. 2, the switch actuated by the trough-shaped control surfaces has to do with the initiation of stops and is designated by SI , while the trough-shaped control surfaces are generally designated TC . The control surface carried by the crosshead and therefore not subject to the lead motor and the hook switches it touches are located in the circles for the elevator display and for the automatic cancellation of elevator calls. The control surface is labeled CX , while the hook switches are generally labeled HX . As shown, the control surface is made of insulating material at its leading edges. This causes that when the hook switch is touched, its contacts are first opened before contact is made between the hook end of the switch and the conductive control surfaces. The control curve carried by the lead bar and the hook switches interacting with it have to do with the measures for the elevator call recording and the highest elevator call. This control surface is labeled CY and the associated hook switches are generally labeled HC. In this control surface, too, the leading edges are made of insulating material, so that the hook switches are opened before contact is made with the conductive part of the control surface. The control surface is furthermore of such a length that when there is contact between its conductive part and a hook switch, the lower, insulating part opens the highest hook switch located below. Two of the brushes carried by the lead bar and the stationary contacts that interact with it have to do with the measures for holding call reception and automatic call cancellation. The brush for upward holding calls is marked with BU and the stationary contacts touched by it are marked with SU . Correspondingly, the brush for the downward holding calls is generally designated BD and the stationary contacts which it touches are generally designated SD. For the top floor, no fixed contact for contact by the brush BU is provided. Another brush carried by the lead bar and the fixed contacts that cooperate with it have to do with the circles for the highest reputation. This brush is with BHL and the one with her

Fixed contacts that work together are generally designated by HL . The brush BHL is arranged on a lever in order to separate the contacts HLC when the brush touches a stationary contact. The fixed contacts SU, SD and HL are connected to the corresponding fixed contacts of the voters for the other elevators. This connection is effected by the lines generally designated WU, WD and WH .

As can be seen from FIG. 4, a further brush ADB carried by the leading strip is arranged in such a way that it can touch a stationary contact ALC on the first floor. As will be explained later, both parts have to do with the directional circles. The brush carried by the crosshead and therefore not subjected to the lead motor and the stationary contacts touched by it are shown in FIG. 3 and have to do with the automatic change of direction of travel at the end floors. This brush is designated with DB and the stationary contacts touched by it, which are provided on the bottom and top floor, are designated with LTC and TTC . The power source for the electronically controlled circuits, shown in principle above in FIG. 2, is capable of supplying various values of direct current and alternating current voltages and combinations of the two. The supply lines carrying direct current of this source are generally designated with B , the value and polarity of the line voltage being differentiated from the voltage of the line designated only with B , which is assumed to be zero voltage, by adding digits to the letter. The specified voltage values refer to the electron tubes of the types specified for the individual circles. The voltages supplied by the power lines B + 150 and B -— 50 are taken directly from the source. The voltages supplied by the power lines marked B + 100, 5 + 70 and B - 30 are taken from voltage dividers RDVi and RDV2 , which are connected to the power lines B + 150 and B - 50 accordingly. Another voltage divider RDB 3 is placed across the power lines B and B + 150, but depends on the IS control switch. This is used to supply voltage for the lamps of the indicators, the height of which depends on the type of lamps used. As shown, certain AC voltages are supplied by the transformers T.Fi, TF 2 and TF 3, which can also have a common primary winding instead of separate primary windings. The ■ one terminal on the secondary side of each transformer is connected to certain parts of the DC power lines. The other terminal of the transformer TF ι is connected to a feed line labeled AC 1. A tap on the secondary side of the transformer TF 2 is connected to a feed line labeled AC 2. A voltage divider RDV 4 connects this tap to the other terminal on the secondary side, and a tap on this voltage divider is connected to a feed line labeled AC 3. A tap on the secondary side of the transformer TF 3 is connected to an AC 4

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nete feed line connected. A voltage divider RDVe ₁ connects this tap to the other terminal on the secondary side, and a tap on this voltage divider is connected to ground GR . For the special tubes mentioned, the root mean square values of the alternating voltages are: -. .

ι io volts from AC τ to B - 50 60 volts from AC 2 to B 90 volts from AC 3 to B 150 volts from GR to 5 + 70 105 volts from AC4 to 5 + 70

For the sake of simplicity, the AC 1, AC2, AC 3 and AC4 feed lines are not shown in the drawings, like the direct current feed lines, but only the connections between these lines and the circuits connected to them are indicated by corresponding reference symbols. In certain cases, connections to direct current feed lines are also referred to in a similar way. Furthermore, for reasons of simplicity, a transformer TF 4, the secondary side of which is in a circle with the control electrode of the tube LCC, is shown at this point. The root mean square value of the voltage of this secondary winding is 40 volts. The specified voltage values can of course vary within wide limits.

For the voltage values given above and the types of electron tubes described, the following values for the ohmic resistance of the

• Resistance and the capacitance of the capacitors in the electronic circuits found to be favorable:

resistance

RDOi, RDRi, RURi ........

RDE, RUE . ·

RF 2

RDXi, RDX2, RQNS

RACC

RDO2 ...

RSB

RPM _v

RC, RCC, RCCP, RD ₁ RU ...:

RLCP

RCPP, RDR2, RLGP, RLPP,

RTP2, RUR2 ....

RLNR, RLQN

RLCC

RLCD2

RCGP, RCPT, RDCT, RHCP,

RHCT ₁ RLPT

RLCDi

RDCP

RCGT ₁ RNSR

RWD, RWU ₁ RLCT

RDG ₁ RLC, RUG

RQT.

Ohm capacitor

, 100

I 000

1250 1500

2000

3600

4000

5000 10,000

20,000

50,000 60,000

100,000 200,000

300,000

400,000

ι Meg

2 meg

10 meg

QD, QU

QNR

QDO, QDR, QUR

QF 2

QT 2 ,

QC, QCC, QCU, QNS, QNSB,

QNSR

QPM

Microfarads

0.02
0.03-O, I.
1.0

3.5

4.0
8.0

As shown in Figure 4, any suitable power source for the elevator knotor can be used. A preferred arrangement is to use a DC elevator motor and to apply currents of different voltages to him, as they are from one according to the Ward-Leonard principle powered generator is supplied. Such an arrangement is shown in Fig. 4, during which the engine generator system is shown in FIG. Of course it can be used for the drive both a DC and an AC drive motor are used in the generator, depending on what type of electricity is available in the building and how the equipment is designed. Furthermore any suitable control devices can be used for this purpose.

If the generator is driven by an AC drive motor, an optional exciter driven by the drive motor applied to power to the separately energized Field windings of the supply generator, elevator motor, brake and for the coils of the various electromagnetic switch of FIG. Such an arrangement would Feed lines of Fig. 4 are connected to the exciter.

The armature of the generator is designated with G, its separately excited field winding with GF and its series field winding with GSF . The armature of the elevator motor is designated with M and its separately excited field winding with -MF. A resistor RG is used to control the strength of the separately excited generator field and thus the voltage applied to the elevator motor armature. RM is a cooling resistor for the field winding MF, while RB is a cooling resistor for the brake release coil BR . These resistors are used to limit the current flowing in the windings to such a value that the winding can remain connected to the mains without the risk of overheating.

¹ The contacts activated by the elevator door and closed when the door is closed are labeled GSi and GS 2. The door contacts operated by the various landing doors are connected in series and not closed until the doors are closed and locked. For the sake of simplicity, the landing door contacts are shown as a single contact pair labeled DL. The elevator door and the shaft doors are in Fig. 1 and their opening and closing with

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Circles causing force are shown in FIG. 3. The door operator is not shown, but may be of the type described in U.S. Patent No. 11,922,708. DOL and DCL are the door opening and door closing limit switches of the door operating device.

5 \ S r, SS 2, SSt ₁ and 55 4 are limit switch

■ contacts. The armature of the advance motor is labeled AMA. This motor has two field winding parts, labeled AMFi and AMF 2.

It is assumed that the elevator is out of order on the lowest floor. When the elevator arrived here for the last time, the brush DB touched the stationary contact LTC and thereby closed a circuit of feed line B + 150 via the brush and the contact, the resistor RDX2, the contacts DGX 3, the pull-up winding of the directional switch DG, the contacts H2 and EX 2 to line B. This actuated switch DG , which was locked in the working position. Therefore, when the elevator is put back into service, the switch DG is in the working position.

The elevator is put back into operation by starting the engine-generator system and. the control switch IS is closed. Closing this switch IS allows the elevator buttons and other controls belonging to the elevator to take effect. The vestibule buttons common to all elevators remain in effect even when the elevator is out of order. Closing the control switch IS also causes the level indicator lamp PC 1 for the lowest floor to receive sufficient voltage to cause it to light up. The circuit runs from the line ß + 150 via the resistor RACC, the contact part of the control surface CX, the hook switch HXi, the lamp PC 1 and the resistor RPC to the voltage divider RDV 3. The lighting of this lamp indicates that the elevator is on the lowest floor If it is assumed that the voltage of the supply lines + and - according to FIG. 4 comes from an exciter driven by the motor-generator system, then starting the motor-generator system causes the elevator motor field winding MF to be excited to a constant field value. Furthermore, the brake resistor switch BK is actuated and causes the relay XA to become active via the closing of the contacts BK1. The switch BK also closes the contacts BK 2 in order to short-circuit the resistor RB in series with the brake release winding BR. Since the brush ADB is in contact with the stationary contact ALC , the switch HLS is also actuated for the highest call light. Furthermore, the switch DGX is actuated by touching the contacts DG 13, which separates the contacts DGX 3 and thereby separates the pull-in coil of the switch DG from the mains, since it is locked in the working position. The doors can be put out of operation either in the open or closed state. The circles are shown for the open position, although they can also be used for the closed position. In the latter case, it would be desirable to have a switch parallel to the contacts SO 3 which is timed to close when the engine-generator system is started. For reasons that will become apparent later, this would cause the door opening switch DO to be actuated in order to open the doors and enable the elevator operator to enter the elevator.

To set the elevator in motion, the elevator operator touches the start button SB. Note that the anode-cathode circuit for the tube of this button runs from AC line AC1 through the tube and winding of trip switch KR to feed line B -50. As a result, 110 volts alternating current are impressed on the tube, but this does not yet allow it to ignite. If, however, the elevator driver touches the button, then from earth GR via the voltage divider RDV 5, the secondary winding of the transformer TF 3 to the feed line B + 70, from there to the voltage divider RDV1 and through the voltage divider RDV2 , to the line B - 50 and from there over the secondary winding of the transformer TF1 to the line AC1 and thus to the anode of the tube and from there via the tube piston through the body of the elevator operator back to earth. As a result, so much voltage is impressed on the tube piston and the anode of the tube that the field distribution in the tube changes to such an extent that the tube is caused to ignite. When the tube ignites, it begins to glow, indicating that the control action has been taken. As soon as the tube ignites, the voltage along the anode-cathode path drops to the holding value, so that the voltage required to operate this switch is impressed on the winding of the drive switch KR. The rectifier VKR maintains the current flow in the winding of the switch KR during the negative alternating current half-cycle.

When the tube belonging to button SB is ignited, a voltage sufficient to ignite this tube is applied to the control electrode and cathode of the tube belonging to the door lock button DCB. When the tube ignites, it will illuminate, indicating that the control action has been taken. This in turn has the consequence that the winding of the door closing switch DC regulates the voltage required to operate the switch. The circuit for the winding of this switch DC runs from the line AC 1 through the anode and cathode of the tube of the button DCB, the contacts H1 and DOi, the winding DC and the limit switch DGL to the line B - 50. The rectifier DC provides maintenance the supply of the coil of the switch DC during the negative alternating current half-cycle. The DC switch causes the landing door of the first floor to start closing.

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factory and the elevator door through contacts not shown. It also closes the contacts DCi in order to close the circuit for the working winding of the pawl magnet PM via the contacts EX 4 . The latch magnet is activated and is locked in the working position. In the working position, he pulls the pawls back to free the retaining flanges, and at the same time he touches the PM 3 contacts, which form a circle from the + line via the DG 7 contacts, the AMA armature and the AMF 2 field winding ■ of the lead motor and the contacts KR ι closed as a result of the actuation of the switch KR closes. This will cause the lead motor to start moving the carriage upward as soon as the doors close.

During the carriage advance, the

Selector switch 1 LS and 3 LS closed and selector switch 2 LS opened. The closing of the switch 3 LS completes a circuit for the coil of the auxiliary speed switch EX via the contacts DDτ and SS 3. The switch EX separates its contacts EX 4 in order to switch off the working coil of the pawl magnet , insofar as the pawl magnet is locked in the working position.

The movement of the carriage also advances the brushes, switch and control surface carried by the lead bar. The brush ADB leaves the contact ALC and thereby opens the circuit for operating the switch HLS. When it drops out, this switch closes the contacts HLS 2, whereby a circuit is closed from the line B + 150 via the tube of the button URB, the contacts DG 6 and HLS 2 and the resistor RUR'2 to the line AC 1. As a result, 110 volts AC voltage is added to the 200 volts DC voltage of this tube, which causes the tube to ignite, while at the same time the resistor RDX 2 at the contacts DGX 4 of the tube is switched off in order to ensure the ignition of the tube. The lighting of the tube is used to indicate that the elevator is moving upwards.

The doors can also be closed by the elevator operator without the elevator being started by touching the door lock button DCB instead of the start button SB. As a result of the grounding by the elevator operator, the tube of the button DCB is ignited in the same way as was described above for the ignition of the start-up button tube. The ignition of the door lock button tube activates the door lock switch DC and triggers the closing of the doors. As soon as the doors, irrespective of whether this is done by the button ^ S or DCB , have reached their closed position, the door-closing termination switch DCL opens and breaks the circuit for the winding of the door-closing switch DC, so that the tube of the button DCB is extinguished and the door-closing switch falls off.

The doors can be opened again by the elevator operator at any time during the closing process after the closing effected by pressing the door closing button D CB or the start button SB by touching the door opening button DOB. When the doors have been closed by the start-up button SB , the door-opening button is no longer effective if the start-up has progressed beyond the point at which the switch E was actuated and the contacts E 1 were thereby disconnected. It should be noted that a circuit runs from the line B + 150 via the resistor RDO 1, the tube of the door opening button DOB, the winding of the door opening switch DO, the contacts £ i, the door opening termination switch DOL and the contacts SO 2 to the line B. However, its voltage is not sufficient to ignite the tube. When the elevator operator touches the DOB button, a circuit is made from earth via the voltage divider RVD 5, the secondary winding of the transformer TF 3 to the line B + 70, from there through half of the voltage divider RDVi to the line B + 150, from there via the resistor RDO 1 and winding the switch DO to the anode of the tube and finally closed via the tube piston through the body of the elevator operator back to earth. As a result, an alternating voltage sufficient to ignite the tube is impressed between the anode and the tube bulb. When ignited, the tube lights up, indicating that the control measure has been carried out. The ignition of the tube causes the door opening switch DO to be actuated, which closes contacts (not shown) in order to cause the doors to be opened. In addition, it separates the interlocking contacts DO 1 in the circuit for the winding of the door closing switch DC and closes the latching contacts DO 2. When the doors have opened fully, the door opening termination switch DOL opens to close the circuit for the winding of the switch DO interrupt. As a result, the tube is extinguished and the switch DO fails .

It should be noted that the anode-cathode circuit of the DOB button tube is connected to leads B + 150 and B so that once the tube is ignited, it will remain conductive, thereby allowing the elevator operator to remove his or her fingers from the button. In the case of the buttons SB and DCB , the anode-cathode circuits of both tubes are connected to the secondary winding of the transformer TF 1 , so that the tube remains non-conductive when you stop touching it. To keep these buttons effective, the elevator operator keeps his fingers on the button. This arrangement is preferably made in connection with the door operation for safety reasons. ,

It is assumed that the elevator operator triggers the start of the elevator and the closing of the doors by touching the start button SB. When the doors reach their closed position, the contacts GSi and GS 2 close, and the contacts for the landing door of the first floor also close, so that the door contacts DL close. Since as a result of the forward movement of the car, the selector contacts 1 LS at

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Closing the contacts GS ι and DL [are closed, a circle from the + line over the winding of the field and brake switch Ή, the selector contacts I LS, the contacts DGi o, the winding of the upward travel switch UD, the contacts SSi, DL , GSi and KR 2 closed to the line. When it is actuated, the switch H closes the contacts ff 5, around the resistor RM located in the circle of the elevator field winding MF.

ίο short-circuit and bring this field to full strength., Furthermore, the switch H closes the contacts H 4, whereby a circuit for the release winding BR of the electromechanical brake is completed. Furthermore, it separates the contacts ff 6 in order to separate the generator field winding GF from the generator armature. At the same time, the switch UD closes the contacts UD 2 and UD 3 to

the generator field winding on + - and line

to connect. This completes the circle for. the generator field winding causes current to be supplied from the generator armature G to the motor armature M and, as a result of the release of the brakes, the elevator motor sets the elevator in motion upwards through the excitation of its winding.

Releasing the brake causes the contacts BRi to be separated, which opens the circuit for the winding of the brake resistor switch BK . This switch fails and separates the contacts BK 2, whereby the cooling resistor RB is switched on in the circuit of the brake release winding. Furthermore, it separates the contacts BK ι to open the circuit for the winding of the delay relay XA for the speed switch. The relay XA. is delayed in falling due to the discharge of the capacitor QXA. When it drops out, it closes contacts XAi, which complete a circuit for the winding of the speed switch fs. This circle runs from the + line via the contacts XA ι and ff 3, the winding E, the switch 2, LS and the contacts DDi and SS 3 to the line. When it is actuated, the switch E separates the contacts Ei in order to render the door opening button DOB ineffective. Furthermore, it closes the contacts E 2 and thereby, via the elevator door contacts GS 2, a circuit for the winding of the actuation sequence switch SO. When activated, the switch SO closes the contacts SO 4 in order to establish a self-holding ^v circuit, and furthermore the contacts SOi in order to create a short-circuit circuit for the tube of the button SB via the resistor RSB and the rectifier VSB, which causes this tube to be extinguished . The interruption of the tube light indicates to the elevator operator that he can now remove his finger from the start button, the switch KR remaining effective through this short circuit. The switch E also closes the contacts E 3 in order to short-circuit part of the resistor RG located in the circuit of the generator field winding GF.

i ,; This pushes the generator field winding open The voltage is increased to a value corresponding to the full voltage and thereby the elevator brought up to speed.

Assume that before the elevator leaves the first floor, two passengers enter the elevator and specify the second and third floors as their destination. As a result, the elevator operator touches the elevator buttons C2 and C3.This causes their tubes to ignite, because in each case the circle from the tube piston through the elevator body to earth is completed, whereby the alternating voltage supplied by the transformer TF 3 is applied across the tube piston. The circle is' similar to the one described for the DOB door opening button. As soon as the tubes begin to conduct, they light up and indicate that the calls are stored and the elevator operator can stop touching them, whereby the tubes remain conductive due to the voltage from line B + 150 to line B. When the tubes become conductive, there is also a potential drop across the load resistors for these tubes, namely resistors RC 2 and RC 2, which causes a voltage to be applied to the control electrode of the high-flow reversing tube HCR. In the case of the elevator button for the third floor, for example, the circle runs from a connection point between the cathode of the tube C 3 and the resistor RC 3 via the hook switch HXt, rectifier VC 3, hook switch HC 3 and HCT, rectifier VHC and resistor RHCP to the control electrode . Therefore a voltage is applied between the control electrode and the cathode of the tube HCR , which corresponds to the potential drop across the resistor RC 3 in addition to the potential difference between the lines B and B -50, whereby this tube HCR is made conductive between the anode and the cathode. The anode-cathode circuit of this tube runs from line AC 1 via contacts HR 3, winding HI, the anode and cathode of the tube to line B- 50. When the tube is ignited, such a voltage is applied to the winding of the high- voltage switch HI that this switch is activated, the rectifier VHI serving to maintain the voltage in the winding during the negative alternating current half-cycle. When it is activated, the relay HI closes the contacts H11, which immediately causes the tube of the button URB to ignite, the lighting in turn serving as an indicator that a call is present above the elevator. The relay HI henceforth separates the contacts HI2 and thereby prevents the completion of a circuit for the coil of the Höchstrufumkehrschalters HR when closing the contacts HLS '3 occasion of starting of the elevator.

When the conductive part of the control surface CY touches the hook switch HC 2, a circle is drawn from the junction of the cathode of the tube; Button C 2 and the load resistor RC 2 via the hook switch HX 2, the rectifier VC 2, the hook switch ff C 2, the control surface CY

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and the resistor RCPP to the control electrode of the tube CCP closed. As a result, as has already been explained with regard to the HCR tube, a voltage is applied between the control electrode and the cathode of the CCP tube which is equal to the potential drop across the resistor RC 2 plus the potential difference between the lines B and B -50. This enables the tube to become conductive when its anode-cathode circuit is completed between these electrodes. At the same time, the work role of the switch SI is in contact with the underside of the trough of the control surface TC 2 for the second floor and thereby causes the switch to remain open. Shortly thereafter, the roller runs into the trough of the control surface and thereby causes the switch SI to close immediately. This closes the anode-cathode circuit for the tube CCP. In view of the fact that the conductive part of the control surface CY is long enough not to run off the switch HC 2 , so that the voltage between the control electrode and the tube cathode is maintained, the tube is brought to ignition between the cathode and anode. The. The circuit for this tube runs from line B + 150 through switch SI, contacts EX 1 and PM 2, pawl magnet attraction coil PM, tube anode and cathode CCP, and resistor RCPP to line 5-50. When the tube ignites in this way, so much voltage is applied to the pull-up coil of the pawl magnet that the pawl magnet is attracted again. This releases the pawls and disconnects the PM2 and PM 3 contacts. The separation of the contacts FM 2 interrupts the circuit for the pull-up coil of the latch magnet and the anode-cathode circuit for the tube CCP, while the separation of the contacts PM 3 makes the lead motor AM currentless.

When the carriage, and with it the crosshead, moves upward, the up latch contacts the second floor retaining flange and stops the carriage. At the same. Time has also moved the role of the switch SI out of the trough and opened the switch. The further movement of the cross head causes the opening of the selector switch 3 LS, the closing of the selector switch 2 LwS * and the opening of the selector switch ι LS in the specified order when the elevator arrives at the second floor. Opening the selector switch 3 LS interrupts the circuit for the windings of switches E and EX. The switch E drops out and separates the contacts £ 3, as a result of which the resistor RG is reconnected to the circuit with the generator field winding GF . This will reduce the voltage of the generator and slow down the elevator. In addition, the switch £ closes the contacts Ei in preparation for the automatic door operation.

The circuit for the automatic start of the door opening is ended by closing the contacts 2 LS shortly before the time at which the elevator reaches the second floor. This circuit runs from the line B +150 through the resistor RDOt, the tube of the button DOB, the winding DO, the contacts Ei, the switch DOL, the contacts 2 LS and SO 3 and the resistor RDO 2 to the line ^ 4Ci. This adds another 110 volts alternating voltage to the 200 volts DC voltage applied to the anode-cathode of the tube, causing the tube to ignite. As a result, the door opening switch DO operates and causes the elevator door and the landing door for the second floor to be opened in the manner previously described. The closing of the contacts DO 2 transfers the circuit of the coil DO and the tube from the line AC 1 to the line B and therefore maintains the door opening process during the period between the separation of the contacts SO 3 and the closing of the contacts SO 2 as a result of the Opening the elevator door contacts GS 2 is during the Türöffnunjgsvorganges. ·, [.

The opening of the switch ι LS when the elevator reaches the second floor width interrupts the circuit for the windings of the switches H and UD. The switch UD separates the contacts UD 2 and UD 3 in order to interrupt the circuit for the generator field winding GF , while the switch // separates the contacts H 4 in order to interrupt the circuit for the release coil BR of the electromechanical brake. As a result, the generator is de-energized and the brakes are applied to bring the elevator to a stop on the second floor. At the same time, switch H closes contacts H 6 to reconnect field winding GF to the generator armature and disconnects contacts // 5 to reinstall resistor RM in circuit with elevator motor field winding MF . The contacts H 1 of the switch H prevent the doors from being closed again and the elevator from starting again, for example by touching the SB button until the elevator has been brought to a stop.

When the elevator arrives at the second floor, the conductive part of the control surfaces CX touches the hook switch HX 2, which creates a short circuit for the tube of the button C 2 via the resistor RACC. This increases the cathode potential of this tube, whereby the tube is extinguished and the call for the second floor is automatically canceled. The contact between the conductive portion of the control surface CX and the hook switch also completes a circle for the elevator level indicator lamp PC 2 for the second floor, lighting the lamp and indicating that the elevator is on the second floor.

After the passenger has alighted on the second floor, the doors are closed again and the car starts up again, just as before, when the elevator operator touches the start-up button SB. The advance of the

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, The carriage is moving upwards and the carriage is set in an upward movement, since the switch DG remains locked in the working position.

When the upper, isolated part of the control surface CY touches the hook switch HC 3, this switch opens and interrupts the previously indicated circuit to the control electrode of the tube HCR. At this time, however, the brush BHL is below the contact HL 3, so that the contacts HLC are closed. As a result, the voltage between the control electrode and the cathode of the tube HCR is maintained, the circuit to the control electrode running from the line B +150 via the contacts HLC, the rectifier VHH and the resistor RHCP . As a result, the tube HCR remains conductive and the switch HJ remains in operation.

When the conductive part of the control surface CY touches the switch HC 2, voltage is applied between the control electrode and the cathode of the tube CCP in the manner previously described. At the same time, the brush BHL touches the stationary contact HL 3 and thereby causes the contacts HLC to open, whereby the voltage between the control electrode and the cathode of the tube HCR is interrupted. Since the tube is fed with alternating current, the tube goes out and this switch HJ drops out. In doing so, it closes r ¹ ie contacts HJ 2, thereby completing a circuit across contacts FM 4, EX 3 and HLS 3 for the winding of the maximum flow reversing switch HR . The switch HR closes the contacts HR6, creating a self-holding circuit. Furthermore, it closes the contacts HR4 in a circle via the contacts DG 4 and resistor RPM for the pull-up coil of the pawl magnet. When the role of the switch SI enters the trough of the control surface TC 3, the switch is closed and a circuit for the latch magnet pull-in coil is completed via the resistor RPM and the contacts DG 4 and HR 4. The tube CCP can also become conductive depending on the value of the resistance RPM between anode and cathode. The excitement of.

Pull-in coil of the pawl magnet causes the elevator to slow down and stop at third floor and that the landing door for the third floor and the The car door can be opened automatically in the manner described above. Likewise, in the previously described way the elevator call for the third floor is automatically deleted and the Level indicator lamp FC 3 for the third floor lit up when the elevator arrives at that floor.

At the beginning of the deceleration, the contacts EX 2 close again and when the elevator stops on the third floor, the contacts H 2, whereupon the circle for the pull-in coil of the directional switch DG is completed, which is from the line 5 + 150 via the contacts HLS 1 and HR5 , the resistor RDXi, the contacts DGX 2, the tightening coil of the switch DG and the contacts H 2 and EX 2 to the line B. This pulls switch DG back on and closes contacts DG 1 in order to give the control electrode of the tube of button C1 enough voltage to ignite this tube and automatically save an elevator call for the first floor. Furthermore, it separates the contacts DG 10 and closes the contacts DG 11 in order to set the elevator to go down. It also disconnects contacts DG 6 to extinguish the tube of button URB and closes contacts DG 5 to make a circuit for the tube of button DRB from line B + 150 through the tube, contacts DG 5 and resistor RDR 2 to the line AC1 and thereby to cause the tube to ignite, the resistor RDX 1 being switched off from the tube by separating the contacts DGX 1. This provides a visible indication that the elevator is on for a descent. The switch also closes the contacts DGg in order to restore the circuit for the winding of the high-level light switch HLS and thereby make the switch effective. It also closes contacts DG 12 to bridge contacts HLS 3 and HJ2 to activate switch HR . keep. Furthermore, it separates the contacts DG 13 in order to interrupt the circuit for the winding of the auxiliary direction switch DGX , whereupon this switch fails. This results in a separation of the contacts HLSj and DGX 2, which in turn interrupts the circuit for the tightening coil of switch DG , with the switch remaining in the tightened position.

After the passenger has alighted on the third floor, the elevator operator touches the approach button SB and thereby closes the doors in the manner described above and sets the elevator in motion. However, in view of the fact that the switch DG is now tightened and the elevator is set up for downward travel, the carriage is advanced in the direction of downward travel of the elevator and the elevator is set in motion in the downward direction. The downward lead of the carriage is caused by the contacts DG 7 being disconnected and the contacts DG8 being closed, whereby the circuit for the lead motor is through the field winding AMF 1 instead of the field winding AMF 2 . The starting of the car in the downward direction is based on the fact that the contacts DG 10 are open and the contacts DGn are closed, so that when the landing door for the third floor and the elevator door is closed, the door contacts DL and the elevator door contacts GS 1 are closed and for the winding of the Downward direction switch DD at the same time with the winding of the switch H a circuit is closed. As a result, the switch DD closes the contacts DD 2 and DD 3, so that the polarity of the generator field winding is such that the elevator is set in motion downwards. When the elevator joins the first

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Floor approaches, the conductive part of the control surface CY comes into contact with the hook switch HCi, and voltage is applied between the control electrode and cathode of the tube CCP , so that when the role of the switch 51 enters the trough of the control surface TC ι this switch is closed and the attraction coil of the pawl magnet PM is energized to cause the pawl magnet to be attracted. This causes the

ίο The down latch engages the first floor retaining flange, stops the car and opens the selector switches to slow and stop the first floor elevator and cause the doors to automatically open as described above. Furthermore, the contacts, S ^ S "4 and SS2 of the limit switch open to ensure the slowing down and stopping of the elevator on the first floor. When the elevator arrives at the first floor, the contact between the conductive part of the control surface CX and the hook switch HX ι made the elevator call for the first floor and brought the elevator status indicator lamp PC ι for the first floor to light.

When the elevator is stopped, the contacts H 2 close again, whereby a circuit is closed over the brush DB and the contact LTC for the pull-in coil of the switch DG ; this circle has already been described earlier. The switch DG closes the contacts D G'i 3 when it is actuated, whereby a circuit for the winding of the switch DGX is completed, the capacitor QDGX and the resistor RDGX delay the actuation of this switch so long that the switch DG actuates with certainty and is locked in the working position before the contacts DGX 2 separate. The actuation of the switch DG sets the elevator to upward travel and extinguishes the tube of the button DRB . In view of the fact that the brush ADB is in contact with the contact ALC when the elevator is present on the first floor, the switch HLS is also held in the working position after the contacts DG 9 have been disconnected.

It is now assumed that before touching button SB to use the elevator from the first floor, a passenger waiting on the second floor wishes to be conveyed upward and touches one of the up-floor buttons, such as button U2. Touching this button will ignite its associated tube in the same manner as previously described for igniting the elevator button tubes, completing the circuit from the tube piston to ground across the body of the waiting passenger. It should be noted that before the tube is ignited, the potential of its control electrode in relation to its cathode and also the potential between the control electrode and the cathode of the tube of the corresponding button U 2! on the other corridor soap is negative by 30 volts. However, this is not sufficient to cause the tube to ignite. If, however, one of the two tubes ignites by actuation, in the example discussed by touching the button U 2, then the potential of the cathode of this tube increases by the amount that is equal to the voltage drop across the load resistor ¹ , whereby the potash electrode potential of the Tube of button U 2 ' is increased accordingly. This increases the potential difference between the cathode and the control electrode of the tube of the button U 2 ' to an amount equal to 30 volts plus the potential drop across the resistor RU 2 and sufficient to ignite the tube, with balancing resistors RUE2 and RUE2' ensuring that these two tubes are conducting in parallel. As a result, when a button is touched to store calls, both tubes will ignite, giving a visual indication on both sides of the corridor that the call has been stored.

Since the cathodes of the two tubes are directly connected in parallel, the two tubes act as a single one with regard to the measures that are carried out by them in addition to the call log display. The voltage drop across the load resistor RU 2 plus the 3OVoIt ₁ received from the voltage divider RDV2 are pressed onto the WPU 2 tube, which serves as an indicator for a passenger waiting to go up on the second floor. This causes the tube to ignite, lights up, indicating that an up call has been stored on the second floor. Henceforth wiird 2 · applying a voltage corresponding to the voltage drop across the load resistor RU 2 via the potential of the line B to the addition Wähler'kontakte SU. As a result, a voltage is also applied between the control electrode and the cathode of the tube HCR, which voltage is equal to the potential drop across the resistor RU2 plus the potential difference between the lines B and B -50. This circle runs from the junction between the load resistor RU2 and the cathodes of the tubes of the buttons U 2 and U2 ' via the contacts SU2, the rectifiers VU2 and VHL 2, the contact HLi, the brush BHL, the rectifiers VHLC and VHH and the resistor RHCP to the control electrode of the HCR tube. When the tube HCR is ignited, the switch HJ is actuated, which closes the contacts HJ- 1 and ignites the tube of the button URB to indicate that there is a call above the elevator. The switch also separates contacts HJ 2 to prevent energization of the winding of switch HR . In the same way, the voltage is applied to the stationary selector contacts SU 2 a etc. for all other Fährstuhle, but the ignition of a tube HCR for another elevator due to the call storage depends on whether the elevator is set to travel upwards and how the position the brush BHL for such an elevator is.

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It is also assumed that, before touching button SB to start the elevator, a passenger waiting on the third floor wishes to descend and accordingly touches one of the downstairs buttons, e.g. button D 3. This will ignite the tubes of both the downstairs button D 3 and JD 3 'as described with respect to the ignition of the tubes for the upstairs buttons U 2 and U 2' . As a result, the WPD 3 tube is subjected to a voltage that is equal to the potential drop across the load resistor Pi? 3 plus the 30 volts received from the voltage divider RDV2. This will cause the tube to ignite and give a visual indication that a call down has been stored on the third floor. In addition, a potential is applied to the selector contacts SD 3 and SD 3 α , etc. for the individual elevators and an auxiliary circuit is created to apply a potential to the control electrodes of the tubes HCR, HCRa , etc. for the individual elevators; this circle for the tube HCi? runs from the left side of the B. load resistance RD 3 via the rectifier VD 3 to the contact SD 3 and from there via the rectifier VHL2 to the control electrode of the tube HCR, as explained above.

It is assumed that the elevator has started to move. The voltage has remained at the control electrode of the tube HCR , and therefore the tube also remained conductive during the movement of the brush BHL between the JYL contacts through the contacts HLC in the manner described above. As soon as the brush!? !! / ^{touches the contact 5 1} C / 2, a voltage is applied between the control electrode and the cathode of the tube LCP , which is equal to the voltage drop across the resistor RU2 plus the potential difference between lines B and B - 5 ο . When the switch SI closes, the anode-cathode circuit of this tube is completed, as a result of which the tube between anode and cathode is made conductive and the latch magnet is attracted again. The circle is similar to that described above for the CCP tube. As a result, the elevator on the second floor is slowed down and stopped in the manner described earlier.

Since the latch magnet has been attracted again when the stop is initiated, the contacts PM i close, whereby the control electrode of the tube LCC is connected to the cathodes of the tubes of the buttons U 2 and U 2 ' . The circle runs from these cathodes via the stationary contacts JT U2, the brush BU, the contacts HRz, XYi and FMi, the resistor RLGP and the secondary side of the transformer TF 4 to the control electrode. The anode and cathode of the tube LCC are connected via the resistor RLCD 1 which, together with the resistor RLCD 2, forms a voltage divider which is connected between line B -50 and AC 4. As a result, 105 volts alternating voltage plus 120 volts direct voltage are applied to the voltage divider and, taking into account that the resistor RLCD 1 has approximately three times the ohmic value of the resistor RLCD 2., about three quarters of this voltage is applied to the anode-cathode line of the LCC tube . When the PM 1 contacts are open, the control electrode of this tube is connected to the cathode via the secondary side of the transformer TF 4, the voltage of which is in phase with the secondary side voltage of the transformer TF 3. This gives the control electrode 40 volts overpotential compared to the cathode. As a result, when the contacts PM 1 are open, the voltage values are such that the tube LCC does not ignite. When the contacts PM 1 close, however, the cathode potential of the tubes of the buttons U 2 and U 2 'is applied to the control electrode of the LCC tube, the potential of which is consequently raised to a point at which that of the transformer TF 4. supplied, superimposed alternating voltage is sufficient to ignite the LCC tube. This increases the cathode potential of the tube LCC to the value of the voltage drop between anode and cathode when the tube is ignited below the anode potential. As a result of the blocking rectifier VLC, which allows the flow of current from the cathode of tube LCC to the cathodes of the tubes of buttons U 2 and U 2 ' , the cathode potential of these latter tubes is increased with respect to their anodes, whereby these tubes are extinguished. The capacitors QU2 and QU2 ' make it possible that at the same time the control electrode potential of these tubes is increased together with the cathode potential, whereby the extinction of the tubes is supported. As a result, the upward call on the second floor is automatically canceled immediately after the stop is initiated, thereby preventing any other elevator from answering the call. The call cancellation lowers the potential of the cathodes of tubes U 2 and U 2! on line B. As a result, the LCC tube is extinguished during: the negative alternating current half-oscillation and does not re-ignite, thus avoiding the stopping of another elevator, which would otherwise be caused by the connection of the cathode of the LCC tube via the brush BU to the selector contacts SU2 of the different elevators would enter. When the up call for the second floor is canceled , the voltage supply to the lamp WPU2, which indicates waiting passengers, is interrupted, so that the lamp goes out after the call has been answered.

For the sake of simplicity it is assumed that no passenger enters the elevator on the second floor and that therefore no elevator call is stored. The upward moving brush BHL touches the fixed contacts for the successive floors to determine whether potential is applied to these contacts or not: If, therefore, the brush touches the contact BHL HL 2 for the second floor, is at this contact

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a voltage was found because an up call was stored on the second floor and a down call was stored on the third floor, so that voltage remained at the control electrode HCR when the contacts HCL were separated when the brush touched the stationary contact. When the up call for the second floor was canceled, the tension was retained as a result of the down call on the third floor. If so, how

ίο is to be assumed that the elevator has been started up again by touching the SB button and is departing from the second floor, but when the brush BHL hits the stationary contact VHLj ₁ , no voltage is found on it, since there is no up call for the third Floor and no floor call has been stored on the fourth floor. The rectifier VHL 3 blocks the flow of current from the connection to the load resistor RDj, through the rectifier VD 3. As a result, when the contacts HLC are opened, the voltage is removed from the control electrode, which remains extinguished after the negative alternating current half-cycle and causes the switch HJ to drop. The switch /// closes the contacts HJ 2, thereby completing a circuit for the winding of the switch HR in the manner described earlier. This switch ///? becomes latching, separates the contacts HR2, and closes the contacts HR 1, whereby the upward brush BU becomes ineffective and the downward brush BD becomes effective. When the switch SJ is closed, a circuit for the tightening coil of the pawl magnet PM is built up via the contacts HR4. In addition, the LCP tube can be made to conduct electricity between anode and cathode because the closing of the contacts ///? 1 applies voltage to the control electrode of this tube from the resistor /? /? 3 via the contacts SD 3 and the brush BD. Tightening the latch magnet causes the elevator to slow down and stop on the third floor in the manner previously described. In addition, the closing of the contacts FM 1 causes the automatic cancellation of the downward call on the third floor, the circuit for the control electrode of the tube LCC running through the contact SD 3, the brush BD and the contacts HR 1. Deleting this call prevents another elevator from answering it. Since the contacts HR 5 are closed, when the elevator is stopped, a circuit is closed for the tightening coil of the switch DG in order to set the elevator to go down in the manner described earlier.

For the sake of simplicity, it is again assumed that no passenger enters the elevator on the third floor and that therefore no elevator call is stored. Instead it is assumed that the elevator is again on the first floor and that instead of storing a down call on the third floor and an up call on the second floor, an up call has been stored on the third floor and a down call on the second floor. If at the 6; When the elevator moves from the first to the second floor, the brush BHL touches the contact HL 2 , then voltage is found at these contacts as a result of the up-call storage on the third floor. As a result, the switch HJ remains in the working position. This opens the contacts HR 1, so that the contact between the brush BD and the contact SD 2 does not apply any voltage to the control electrode of the tube LCP. As a result, the elevator passes the second floor without stopping at this floor due to the down call. If the brush BHL touches the contact HL 3, voltage is again found at this contact as a result of the storage of an up call on the third floor. It should be noted that the connection from the resistor RU 3 to this contact via the contact SUj. and the rectifier VU 3 takes place. As a result, the switch /// remains in the working position. However, if the brush BU comes into contact with the stationary contact SU 3, the control electrode is the. ■ Tube LCP voltage applied so that when the switch SI closes a circuit is created for the pull-in coil of the pawl magnet PM , which causes the elevator to slow down and stop on the third floor. Closing the PM 1 contacts establishes the call up for the third floor. In this case, the voltage applied to the control electrode of the tube HCR is dissipated from the resistor RU3 via the rectifier VU 3, causing the switch HJ to drop. Note the difference between the previous and this example. If, as in the previous example, the highest call is a down call, then switch HJ will fail before the latch magnet has been attracted. If, however, as in this example, the highest call to be answered is an upward call, then first the latch magnet is attracted and then the switch HJ is made to fall. As a result, the closing of the contacts HJ 2 in this case cannot complete a circuit for the winding of the switch HR , since the contacts PM4 are open. Therefore, the contacts HR 5 do not close either, so that the switch DG is not activated, and the elevator remains set to travel upwards when it is brought to a stop on the third floor.

For the sake of simplicity, assume again that no passenger enters the elevator and that no elevator call is stored. When the brush BHL leaves the contact HL 3 when the car starts up, the contacts HLC close and cause the switch HJ to become active again. In the course of the further advance of the car, when the contacts EX 3 are closed, no circuit for the winding of the switch HR is completed. When the brush BHL touches the stationary contact HLT

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the voltage is removed again from the control electrode of the tube HCR , whereby the switch HJ is made to drop out. This creates a circle for the winding of the Hi? completed, which closes the contacts HR 4, so that when the switch SI closes the circuit for the rinse of the pawl magnet PM is created. This causes the elevator to slow down and stop on the fourth floor, this process being secured by opening contacts 6 * 5 * 3 and SSi. As a result of the closing ^ of the contacts HR 5 and the mutual contact of the brush DB and the stationary contact TTC , a circle for the pull-in coil of the switch DG is completed when the chair is stopped, which causes the elevator direction to be adjusted downwards. If the elevator operator now touches the start button SB , the elevator is set in motion from the top floor downwards. Please note that when the elevator is set to go down, the DG 12 contacts are closed so that the HR switch remains in the working position. As a result, the contacts HR1 are opened for the downward travel of the elevator and the contacts HR 2 are closed, so that the brush BD becomes effective and the brush BU becomes ineffective for the elevator downward travel. Since the brush BU is ineffective, no upward calls are answered during the downward movement. Furthermore, the contacts HR 3 are also open, which prevents the switch HJ from being actuated while the car is being set for downward travel. When the brush BD is stationary.

Contact SD 2 touches, voltage is applied to the control electrode of the LCP tube because there is an unanswered call down for the second floor. When the switch .SY closes, a circuit is completed in order to attract the pawl magnet, which slows down the elevator on the second floor and brings it to a stop, with the closing of contacts PM 1, as described earlier, calling down the second floor Floor is automatically deleted.

It sometimes happens that you want to delete a call that has already been saved. The elevator operator can do this by touching the appropriate elevator call cancel button. For example, assume that an elevator call has been stored for the third floor and that this call is to be canceled. When the tube of button C 3 is conductive, its cathode potential is 150 volts less than the tube drop above that of line B. This potential is applied to one side of capacitor QC 3. Since the tube CC 3 is non-conductive, the other side of the capacitor has the potential of the line B. In other words, the potential drop across the load resistor RC 3 is applied to the capacitor QC 3 and this is thereby charged. To cancel the call for the third floor, the elevator operator touches the factory call release button CC 3, which ignites its tube in the same way as earlier the tube of button C 3 ignited when touched. The tube of button CC 3 immediately conducts, and its cathode potential increases above that of line B by the amount of 150 volts minus the tube waste. Since the charge on the capacitor QC 3 cannot be dissipated immediately, this increases the cathode potential of the tube of the button C 3 and the voltage across this tube drops below the. Hold value reduced. This causes this tube to be extinguished and the call is deleted. The tube of the button CC 3 goes out automatically as soon as the charging current of the capacitor QCC, which is common to all tubes of the elevator call canceling button e, falls below a certain value. The resistor RLC bridging the capacitor QCC serves as a discharge for this capacitor in order to prevent it from being in a charged state when an elevator call cancel button is touched. This resistor also acts as a discharge resistor for this capacitor in order to reduce the capacitor discharge time after the tube of the elevator call cancel button has been extinguished. This has the effect of greatly reducing the time between the cancellation of an elevator call by touching an elevator call cancellation button and the activation of the other elevator call cancellation buttons. This is advantageous in the event that more than one elevator call is to be deleted.

If, for example, when the elevator is fully loaded, it is desired that the elevator drives through without taking account of floor calls, this can be done by the elevator operator touching the passage button NSB. This completes a circle from the tube piston of this button over the body of the elevator operator to earth to ignite the tube in a manner similar to the elevator tubes, the hold circuit for this tube from line B + 100 through the resistor. RQNS, contacts DG 2 or DG 3, the tube, tube resistor RLCP, and switch JVC to line B- 50. When this tube is ignited, its cathode potential increases by the value of the voltage drop across the resistor RLCP over that of the line B- 50. This increases the potential of the cathode of the tube LCP accordingly. Assume that the elevator is set to descend on the top floor and that a down call is stored for the third floor. When the drive-through button is pressed, when the brush BD hits the contact SD 3, voltage is applied to the control electrode of the tube LCP , but as a result of the increase in the cathode potential this is. The voltage applied between the control electrode and the cathode of this tube is smaller by an amount equal to the potential drop across the resistor RLCP than in the case where the tube of the button NSB is non-conductive. Likewise, when the switch SI is closed to the anode

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Cathode path of the tube LCP applied voltage correspondingly lower than in the case that the tube of the button NSB is non-conductive. As a result, the LCP tube does not fire and there is no stop due to the down call on the third floor.

The tube of the drive-through button is automatically activated by the contacts DG 2 when the setting of the elevator's travel direction is changed

ίο or DG 3 extinguished. For example, if the elevator descends. on the lowest. When you arrive on the first floor, the contacts DG 2 open and thereby interrupt the circuit for this tube. The rectifier VNS prevents the tube from continuing to burn due to the discharge of the capacitor QNS, this discharge being absorbed by the resistor RLQN in order to reduce the capacitor voltage to a value that does not re-ignite when the contacts DG 3 close. Tube would cause. The resistor RQNS prevents the immediate recharging of the capacitor QNS when the contacts DG 3 close. Therefore, the tube does not ignite immediately when the contacts DG 3 close, even if this occurs quickly after the contacts DG 2 are disconnected. This automatically releases the drive-through button. This release can also be done manually by the elevator operator touching the passage release button NSRB , whereby the ignition circuit from the tube piston through the body of the elevator operator back to earth and the anode-cathode circuit from the line B + 100 via capacitor QNSR, the tube and the resistor RNSR to line B -50 running. The process is similar to that described earlier for manually canceling elevator calls. When the tube of the button NSB 'is conductive, the capacitor QNSB is charged, with its potential on the electrode side of the tube of the button NSB being the potential drop across the resistor RLCP above the line B -50, while its potential on the cathode side of the tube of the Button NSRB is equal to the potential of line B- 50. When the tube of the button NSRB is conductive, its cathode potential increases with respect to that of the line B -50 by the amount of the potential drop across the resistor RNSR. This increases the cathode potential of the tube of the button NSB and reduces the voltage across this tube below the holding value, whereupon the tube goes out. The tube of the button NSRB is automatically extinguished, so that the charging current of the capacitor QNSR drops to a certain value, whereupon the tube goes out. Resistor RLNR acts as a bleeder resistor for capacitor QNSR and prevents it from being charged when button NSRB is touched. The capacitor QNR prevents undesired ignition of the tube of the button NSRB during the passage.

If, due to an elevator button, a stop occurs in the case of the passage button being pressed,. For example, if a floor call for the elevator direction is stored for the floor on which the stop takes place, then it is automatically deleted in the manner described earlier when the contacts PM 1 are closed. However, if such a system arrangement is desired that the landing call should not be canceled under these conditions, this can be done, for example, by replacing the resistor RLCP with the winding of the drive-through canceling switch XY . In the circles shown, this can be done in such a way that the switch NC is thrown from the position shown into the other working position. As a result, when the drive through button is pressed, the switch XY is operated, which separates the contacts XYi in the circuit of the control electrode of the tube LCC and thereby prevents the automatic cancellation of floor calls when a stop is made due to elevator calls. Isolating contacts on switch XY can be used in a feed circuit that is common to all signal lamps on the floors. These lamps indicate when a stop has been made and what the direction of travel is, although the signal lamp circles are not shown.

It sometimes happens that a landing call remains unanswered for a long time, for example when the elevator is passing through. This is particularly the case with calls down from lower floors during the evening peak when the building is depopulated and all of the elevators on their descent are likely to be in transit on reaching these floors. The system can also be set up to answer such calls and such an arrangement is shown for a down call on the second floor. A circuit runs from line B through resistor RD 2, a rectifier tube VT 2 and a capacitor QT 2 to line AC 2. As a result, if no down call is stored for the second floor, capacitor QT 2 is charged and gives the grid of the tube TP 2 has a negative potential with respect to the cathode, whereby the conduction of the tube is prevented. It is assumed that a landing call is stored for a floor above the second floor, whereby the switch HJ is actuated. It is also assumed that a down call is stored for the second floor. The switch HJ prevents the elevator from stopping on its upward movement due to this downward call. If the drive through button is operated before the downward brush BD touches the contact SD 2 on the downward movement, this call will not be answered during this downward movement. In view of the traffic conditions, this condition can persist, so that the down call from the second floor remains unanswered. If, however, the down call is stored for the second floor, then the potential of the cathodes of the tubes of the buttons D 2 and D 2 'increases above the line potential B by an amount equal

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the potential drop across the resistor RD 2. This increases the potential of the cathode of the rectifier tube VT 2 accordingly, so that this tube can no longer hold the capacitor QT 2 in its previous state of charge. As a result, the capacitor discharges into its discharge resistor RQT 2 and thereby gradually makes the grid of the tube TP 2 less and less negative with respect to its cathode, until after a certain time the tube becomes conductive. The circuit of this tube runs from the cathodes of all ignited floor buttons for each floor above the second floor or from the cathodes of the floor buttons U 2 and U 2 ', if they should have ignited, via the rectifier RTP 2 indicated earlier, the contact HL 2 and the anode and the cathode of the tube TP 2 to the line AC 3. As a result, the anode-cathode line is connected

a positive potential is applied to the tube TP 2 , which is equal to the potential drop across the resistor. RD 3 is above the line voltage B plus 90 volts AC voltage, so that with a sufficient decrease in the voltage across the capacitor

07 * 2 the tube becomes conductive. As a result of the resistor RTP 2 , the potential at the contact HL 2 ■ is reduced, so that - assuming that there is no elevator call for a floor above - when this contact is touched by the brush BHL when the elevator is set to go up, the potential applied to the control electrode of the tube HCR is not sufficient to hold the tube, the capacitor QF 2 and the resistor RF 2 serving as a filter to keep the lowered voltage on the control electrode of the tube HCR during the AC half cycle in which the tube TP 2 is non-conductive. As a result, the switch HJ fails and causes the elevator to slow down and stop on the second floor, the call down from this floor being automatically canceled and the elevator set to go down. As soon as the call is canceled, the capacitor QT 2 charges up again, restores the negative potential at the grid of the tube TP 2 and thereby prevents the tube from re-igniting in the subsequent positive alternating current half-oscillations. In this way, a downward call is answered that has remained unanswered for an extended, predetermined period of time.

The direction of travel of the elevator can be changed by hand on each floor where the elevator stops by touching one of the buttons URB and DRB. For example, assume that a stop was made on the third floor and that the elevator remained set to go up. The elevator operator touches the DRB button to convert the elevator's direction of travel into downward travel. This completes the circle from the tube piston through the body of the elevator operator towards earth and ignites the tube. When igniting, a circle for the pull-in coil of switch DG is completed, which runs from line B '- \ - 150 via the tube, contacts DGX 1 and DGX 2, the pull-in coil and contacts H 2 and EX 2 to line B. As a result, the switch DG is attracted and sets the switch to downward travel in the manner described earlier. By closing the contacts DG 5 again when the switch DG is tightened, another circuit is created for the tube of the button DRB from the line B +150 to the line ACi, which lights up this tube and thereby gives a visual indication that the Elevator is set to go down. The operations which occur when the button URB is manually touched for the purpose of setting an elevator stopping on an intermediate floor to travel upwards are similar to those which have just been explained in connection with the touching of the tube DRB.

It can therefore be seen that the start of the elevator is due to a manual control on the part of the elevator driver takes place. Stopping to let passengers out on floors that Were requested by these passengers is based on elevator calls made for these floors saved by the elevator driver by notification of the passengers and in both directions of travel will. The pausing to pick up passengers takes place on the basis of the landing call stored by the waiting passengers themselves on the floors for which such calls are stored. On every mezzanine an up and / or a down call can be stored. The stop is due to the reason from upward calls during the upward movement and due to downward calls during the downward movement. The elevator can, however, during the upward journey due to a downward call stop at a floor if it has reached its maximum call, d. H. if for this Floor no up call and no elevator call or floor call for a floor above is stored. The stop in each direction of travel occurs in the order of Floors for which calls are saved, regardless of the order in which the calls are saved as such were saved. The elevator can also go up due to a Stop the down call if that call is not the highest call, provided that it is a predetermined one Was stored for a long time. The calls are automatically deleted after they have been answered; In addition, elevator calls can be deleted manually if required. The doors are opened automatically when stopping and automatically closed when restarting. The doors can also be opened by the elevator operator using a manual control or be closed. When driving upwards due to a downward call on one If the mezzanine floor is stopped, the direction of travel is automatic when the elevator stops switched to downward. Likewise, the

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Direction of travel changed automatically at the end floors. Furthermore, the direction of travel can be every mezzanine floor on which a stop is made, changed due to a manual control will. The elevator can be driven through manually by the elevator operator in with respect to landing calls. Both the floor and the elevator buttons there is a visible indication that

ίο a call has been saved. The same visible display is also made with regard to the actuation position of other manually operated control elements. In connection with the display of the actuation of hand-controlled direction control organs, there is also a display with regard to the direction of travel and the calls made above. Furthermore, there is a display on the floor indicators for waiting passengers for whom floor calls have been made and with regard to the direction of these. The position of the elevator in the shaft is also displayed. When the invention is applied to a system with multiple elevators, each elevator serving a particular floor can answer a call for that floor. For example, if two or more ascending elevators are in a position with respect to a floor for which an ascending call is stored that they can answer the call, then that elevator will answer the call. whose switch SI is closed first after the brush BU belonging to the elevator has touched the SU contact for the floor. The resulting, automatic cancellation of the call prevents other ferry chairs from stopping on the basis of this call. Similarly, if two or more descending elevators are in a position with respect to a floor for which a descending call is stored, that they can answer the call, the elevator whose switch SI is closed first will answer the call after the brush BD belonging to the elevator has touched the 57> contact for the floor. If the same downward call is the maximum call for two or more upward elevators, the call will be answered by the elevator whose switch SI closes first after the brush BHL belonging to the elevator in question has touched the ffL contact for the floor. If in this case a subsequent elevator has no intervening call, it is stopped at the floor whose contact HL is touched by the brush BHL for this elevator first or next. Likewise, if a delayed downward call is answered by an upward elevator, the one of the elevators set for upward travel will answer the call whose switch'57 closes first after its brush BHL touches the if.L contact for the floor for that the call is saved. Where the elevators of a multiple elevator system are arranged on opposite sides of a corridor with floor buttons also present on both sides, there is a visible display of a call on both sides of the corridor, which was stored in a floor button on one of the two sides. All of these measures are carried out or controlled electronically.

Every landing call is saved when a waiting passenger touches it, the causes the electron tube to ignite. The tube remains conductive to the call until answered to save and thereby enable an interruption of the contact. Simultaneously was, the glow of the tube as a display used for Rufspeidherung. The drop in potential along the fastening resistance in the tube circle> is pushed onto another electron tube and causes it to ignite, using it as a Used to display a waiting passenger. The potential drop is also used to create a to ignite another tube in order to initiate the stop of an elevator on the basis of the call. The potential drop is still used to ignite a. After answering the call third tube to cause a reduction in the voltage in the Rufspeidherröbre under the Holding value causes the tube to go out and thus automatically clears the call. Where there are buttons on either side of the corcnidor, raised the potential fall-at the load resistance that .Cathyoid potential of the tube leading to the button on on the other side of the corridor, so far that one lying on the control electrode of this tube Potential to ignite the tube. Thus, touching one of the two buttons ignites both tubes and thereby causes a visible display of the Rufspeidherung on both corridor sides.

Every Falirstuhl call is also made by touch, however saved by the elevator operator at the instruction of the passengers, whereby an electron tube is ignited. As with the landing call, the tube 'remains conductive to to keep the call stored until it is answered, with its glowing to indicate the call storage and the potential drop along the BeläSitungsWiderstandes in the tube circuit is used will cause the ignition of another tube to stop the elevator To initiate the reason for the call. When the call is answered, the voltage across the Rufspeidherröhre decreased below the hold value, causing the tube to extinguish and the Call is automatically deleted. The elevator calls can be made manually by the elevator operator 'can be released by pressing the appropriate driver call button touched. Touching such a button brings the associated tube to Ignition, whereby the potential along the Rufspei dherrohne is reduced below the hold value.

When the elevator is set to go up is, an electron tube is made conductive by shouting for above 'the elevator stored floors. this

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happens in that control circuits for this tube through the load resistance of the call storage tube a potential is impressed at the points assigned to the floors. These control circuits examine each of these points,, and when a point: is reached where there is no potential is present, the tube is extinguished. This obliteration is used to help with the Upward travel due to ground; a down call

ίο Cause stopping when this call of the High call is, and also if there are higher landing calls, the down call during a has not been answered for a certain period of time. It will also wipe out the tube used to cause a halt when there are no calls for floors above the Elevator, and furthermore, to set the direction of travel of the elevator to go down, if the elevator is stopped under one of these conditions, and, too then, when the elevator in response to an elevator that acts as a maximum call, call it to the Stopping is brought about.

The start of the elevator after each stop wind by touching a button on the part of the elevator operator which causes an electron tube to ignite. The tube remains Conductive as long as the contact lasts or up to a certain point during the tempering process. The lighting of the tube indicates that the measure has been carried out. If the certain point - while the starting process is reached, wind: the tube automatically extinguished, the cessation of illumination notifying the elevator operator that contact has been broken can be. This activity of the elevator driver, 'to initiate the start of the elevator, is used to close the doors to effect. The drawings show: the circles that indicate the ignition of the tube of a door lock button and thus initiate this measure. The door lock button tube can through Touch on the part of the elevator operator 'ignited to close the door without starting the To effect the elevator. The doors are opened by the elevator operator he touches a door opener button that ignites caused by a tube. This tube remains conductive until the door is fully opened, whereupon contact is made can be interrupted. The tube will furthermore automatically ignited when healed in order to cause the doors to open. The glow the door control button serves as an indication that the measures have been carried out. The direction of travel is changed manually by the elevator operator on a Zwis'clhenstockwenk by he touches the void reverse button. The lighting up of the buttons belonging to the touched button Tube indicates that the measure is being carried out. These tubes also become automatic ignited to indicate the direction of travel. When the elevator is on the first floor the tube of the up button is automatically ignited when a call is made on an upper floor is stored to indicate the presence of such a call.

The passage of the elevator in order to prevent the answering of calls is effected by the elevator operator in such a way that he touches a passage button which causes the ignition of a tube. As a result, the cathode potential of the tube, through which a stop is initiated due to a landing call, is increased to a value at which the tube does not ignite, so that compliance with the S'toclkwerk call is prevented ¹ . The lighting of the tube indicates that passage has been set and that the elevator operator can interrupt contact. The passage is automatically interrupted when the direction of travel is changed and, if necessary, manually interrupted by the elevator operator touching the passage release button. This ignites the tube of this button, reducing the voltage applied to the passage tube to such an extent that the tube is extinguished.

Undesired events in the circles for the highest floor call and; Floor calls are prevented by the rectifiers VHL, VU and VD for the various floors. The F7? L rectifier blocks - in the sense of the Schaltisohemais - the upward flow of a noticeable current in the circles that are being skinned. If, for example, a downward call is stored on the second floor, then voltage is applied to the selector contact HL 1. As a result of the blocking action of the rectifier VHL2 , however, no effective voltage is impressed on the contacts HL 2 or HL 3 due to this waiting call from the second floor. If, therefore, there is no voltage at these contacts with regard to any other floor call, because, for example, in the case of contact HL 2, an up call for the second floor or a S'toekwerk call from an overlying one. Floor are present, no effective voltage is impressed on the control electrode of the tube HCR due to the floor call when the contact is touched by the brush BHL. The. Rectifiers VU and VD block the flow of a considerable current to the stationary selector contacts SU and SD from the selector contacts HL here. As a result, an effective voltage can be applied to these selector contacts SU and SD only on the basis of such floor calls, which are stored in tubes which are directly connected to these contacts. As a result, false stopping is avoided and more than one landing call can be stored at the same time. The Sperngleichnidhiter VC should in principle prevent a noticeable voltage from being applied to the cathodes of the tubes for other elevator buttons due to an elevator call storage, so that a plurality of cockpit calls can be stored at the same time.

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The electronic call storage avoids electromagnetic floor relay with clocks numerous contacts and the push buttons of the compact type. The tension for the call reception and Höchstrufkreis is made by B. removed with peers who block unwanted circles. The wandering cable for all circles of the elevator reset buttons and elevator display device only takes two

ίο feed lines, namely line B + 150 and B, and one line for each floor and one line from the contacts DG 1. The voltage divider RDV3, the capacitor QCC, the resistor RLC and! the QC capacitors and iiCC resistors are carried by the elevator. The feed lines for the indicator lamps for waiting passengers run from the individual floor in the shaft down to the Staritertafel. The "call storage tubes with their own indication of the call storage make special windshield and wind cable lines and lights unnecessary for this purpose. However, special lamps can also be used, whereby they would then have to be subjected to the voltage drop along the load resistors, the load resistors RC from Elevator worn and Beraistungswider! Stäindei? [/ and RD should be placed on the floor buttons, respectively, thereby avoiding special Lampenspeiiiseleitungen in the shaft and the elevator cable. Even where both sides of the corridor Knöpfie are provided the compounds can you row lines 5 +150 and B> - 30 in the two corridor damage and by a Sehadhtleitung, which runs from the cathode of each tube to the selector, the balancing resistors RUE and RDE, the protective resistors iviC / G and RDG and the capacitors QU and QD in the button sockets / are arranged. the Steuerflädhe C Y and the Hakenschal tier HC are used both for elevator call recording and for the highest elevator call processes, although they do not only reduce the line, but also the cost of equipment for these processes.

Even if the invention has been described in application to a multi-wheel elevator system, it can also be used for a system with only a single elevator. Likewise, instead of the control systems shown, which are identical for two elevators, the control for one or more elevators of a large number can of course be different from those of the others with corresponding changes in the circuits and equipment. In the case of systems with only one row of Stodkwerk buttons, the extension resistors RUE and RDE, the grid protection resistors RUG and RDG and the capacitors QU and QD can be omitted. Furthermore, with buttons arranged on both sides of this corridor, the visible display of a call stored on one side of the corridor can be effected in a different manner on both sides of the corridor.

Furthermore, the invention is not only limited to the maximum call reversal system described, but can also be used in other types of operation, for example where the elevators each run to the Enidstockweriken. In order to always let the elevator run to the top floor, the elevator button for the top floor on the bottom floor can be ignited by making contact on the SD holder DG. In this case, the circuits and equipment for high-call reversing operation could be omitted or a cover holder could be provided in order to switch from one operating mode to the other.

The touch button tubes and the circles assigned to them are largely changeable. For example, they could be made to ignite by connecting the touch buttons to the control electrodes of the tubes. On the other hand, push-button types with working contacts could be used to ignite these tubes, or the touch button could be allowed a certain amount of movement in order to simulate the moving push-button type with contacts. The load resistors could be connected to other points on the anode-cathode circuit. The calls could be canceled automatically in another way. It could also Faihrstuhlriuifknöpfe ^and: the contiguous circles with them, especially in the case of reliable elevator operator, are omitted. The Stoekwerk button tubes and / or the FahrstuM button tubes can do this. be arranged that they. ■ Operate the stick-type crela'is whose windings are switched on instead of or in addition to the load resistors. In such cases, the Relbiswicklung for more control and ¹ Ad can along accordance took turn exploited the Potentialiabfall. The travel button can be set up in such a way that the contact must be continued as long as the tube is to remain conductive. In this case, the button can also be set up in such a way that it initiates the start of the elevator and the closing of the doors in the same way as the opening button SB causes the door opening button to be ignited. Other travel measures can also be used. Where the cathode potential of the tube LCP is not changed during drive-through operation ¹ , a single tube can be used instead of the tubes CCP and LCP. And the constituencies of the electorate may be different and other forms of electoral apparatus may be used.

Certain parts of the control system may be electronic while other parts of the Control can be formed by contact holder types. For example, only the Call memory buttons electronic, be while; the Approach, door, reversing and transit control organs can be of the Kontabitschaltiertype. The floor buttons: can be electronic and the elevator buttons of the contact type. Furthermore can use the circles for highest elevator call

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or call for the top floor or for both Varieties the influence of floor relay contacts instead of idle patent failure along the line resistances be subject to. Attracting the latch magnet for stopping on the first The first floor can be called an elevator for the first floor without automatic power supply be effected. Furthermore, the automatic storage of an elevator call for the

ίο take place on the first floor in such a way that the connection point of the resistors RCGT and RCGP to the cathode with the anode of the tube DRB is connected via a capacitor, whereby the contacts DG ι and their associated line in the moving cable are unnecessary. The elevator display circuit and equipment can be modified or omitted. The same applies to the display circuits and equipment for waiting: passengers. The circle to stop

ao an upward elevator due to a longer one Time saved down call can also be provided for other floors, whereby also these circles can be modified or omitted.

Claims (1)

PATENT CLAIMS: 1. A control system for an elevator with means for slowing down the elevator at fahrstu'hilbeienten floors and means for subsequently stopping this elevator at such floors, wherein electron tubes are used, characterized in that the call feed for the floors is done by means of control circuits, which the Put tubes (U, D or C) assigned to floors into operation, and: that the means for slowing down (PM, 3 LS) and preferably also for stopping (1 LS) the movement of the chair when approaching those floors are controlled for electronic call storage is present. 2. Tax system according to; Claim 1, characterized in that the working group (GR, AC 1) for the tube (U, D or C) is controlled by hand. 3. Control system according to claim. 2, characterized in that the manual control of the working group (Gi ?, ACi) for the tube (U, D oider C) takes place as a function of the contact by a person. 4. Control system according to one of the preceding claims, characterized in that in the anode-cathode circuit of each tube a loading member, for. B. a resistance! (RU, RD or RC), is connected to a current source (B + 150, B) and that the means for slowing down (PM, 3 LS) and preferably also the means for stopping (1 LS) this elevator is caused by the voltage drop can be controlled at these load members. 5. ■ Control system according to claim 1 and 3, the electron tubes (U, D or C) are provided with a cold cathode, characterized in that a direct current! Source (B + 150, B) is available for the anode-cathode circuit of the tubes and that the ignition of each tube is effected by having the tube connected to a source of alternating current or chopped (or pulsating) direct current (Ci ?, AC1) by a person touching it. 6. Control system according to claims 4 and S, in which the load members in the anode-cathode circles are on the cathode side (CA) of the tubes, characterized in that the means (PM, 3 LS) for slowing down and preferably also the means (1 LS) to stop the elevator on each floor by controlling the cathode potential of the call storage tube (U, D or C) assigned to the floor. 7. Control system according to one of the preceding claims, characterized by means (LCC or CX, HX) for deleting an actuated Rufspeidher.röhre which are occasionally actuated for answering calls. 8. Control system according to claim. 7 in connection with claim 6, characterized in that the means for deleting an actuated call storage tubes (U, D or C) occasionally 'the answering of means (LCC or CX, HX) consist of the cathode potential of the tube to bring it to the rollover value and to automatically delete d'adurdb the call. 9. Control system according to claim 8, characterized in that the means with which the Katihodempotemtial each operated call storage tube is increased occasionally the call response, from a Ruflöseh electron tube (LCC), z. B. with a cold cathode, exist and are controlled by the cathode potential of the Rufispeicherröhre in which the call to be answered is stored, for example, by this Katihodenpiötentiial is applied to a control electrode of the Ruflöschöschröhre to ignite the ringing tube and thereby the potential of the to increase answering Rufspeliclherrölhre. 10. Control system according to claim 7 or 8, 'characterized in that for each floor' manually operated means (CC) for Auslösdhen the Rufspciidherröhre (C), in which a call has been stored, are present in order to cancel the call for the floor. 11. Control system according to claim 10, characterized in that each hand-operated means for canceling a stored call from a Ruilöschröhre (CC) with a cold cathode and a circle (GR, ACi) for this tube, through which on the basis of a hand touch Tube can be ignited, and that means (QC) are provided through which, when the call extinguishing tube is ignited, the call storage tube (C) assigned to the floor 609 '514/133 O 1203 XI / 35 a stored call is deleted by connecting a capacitor (QC) between the cathodes of the call storage tube (C) and 'dter Ruflöscihröhre (CC) , which is placed in a charged state when the call is stored, ■ so that when the call extinguishing tube is ignited, the cathode potential of the Call storage tube is increased for the purpose of extinguishing the tube and canceling calls. , ' ίο i2. Control system according to claim ii, characterized in characterized in that a capacitor (QCC) is present in a common circuit for the ring extinguishing tubes, which capacitor causes the extinguishing of each ignited tube when the capacitor charging current falls below a certain value. 13. Control system according to one of the preceding claims, characterized in that the actuation of the means (PM, 3 LS) for slowing down and preferably also the means (iLS) for stopping this elevator on a floor by a call recording electron tube (LCP or CCP) is triggered, which is controlled by an activated call storage tube (U, D or C) for the floor on which the elevator is to be slowed down or stopped. 14. Control system according to one of claims 1 to 9, characterized in that firstly a plurality of fixed memory means (U or D) assigned to each call. Contacts . (HL), secondly for each contact connection means (VU or VD) , in order to impose a certain potential on it in the event of a call storage in its associated call storage device, thirdly for each contact means (VHL) for connection to the contact of the in a given direction of travel the next floor in order to force the potential of a contact of a floor in this direction of travel on it, and fourthly, contact means (BHL) actuated depending on the movement of the chair are available to touch these contacts, and that the means (PM, 3 LS) for slowing down and preferably also the means (1 LS) for stopping the elevator at ¹ a floor work are controlled by the contact of the contact means, which are moved as a function of the elevator movement, with the stationary contacts will. . 15. Control / system according to claim 14, characterized in that the means (VHL) for connecting the individual contacts to the contact of the next floor contain a rectifier and work in such a way that the pressing of the potential of this contact onto the contacts of the in the direction of travel ahead ■ is prevented. 16. Control system according to claim 14 or 15, bsi the call-storing means (U) for storing an up call for this floor are available for each floor, characterized by means which are actuated when the contact means are touched with a contact that does not have this impressed potential to stop the elevator going up at the floor to which the contact belongs. 17. Control system according to one of the claims 14 to 16, in which means (D) which store calls for each floor for storing a down call for this floor are present ν, characterized in that means (VD) are present for each stationary contact, in order to connect it in such a way that a certain potential is impressed on it when a down call is stored for the floor which is next above the floor to which the contact belongs. ' 18. Control system according to one of claims 14 to 17, characterized in that the contact means and: contacts are able to control the activity of the cold cathode tube (HCR) for the highest call to effect the control of the deceleration and preferably also the stop of this elevator . 19. Control system according to one of the preceding claims, characterized in that an electron tube (SB) for the approach control is present in the elevator and; that for this tube there is a hand-controlled circuit (GR, AC 1) to trigger the ignition of the tube and means (KR) controlled by the tube to switch on after each stop. To cause the driving chair to start up. 20. Control system according to claim 19, characterized in that the hand-controlled circuit for triggering the ignition of the Anfalhrsteuerrölhre consists of a circle for this tube, which is dependent on a contact by the elevator operator with a source of alternating current or chopped (or pulsating) direct current (Gi ?, AC 1) is allied. 21. Tax system according to. Claim .20, characterized in that the start-up control tube (SB) is kept in the ignited state beyond the start, provided that the start-up contact is maintained, and that means (SO) are provided which can be actuated when the elevator starts up to keep the starting means operable independently of the tube so that contact with the tube can be broken. 22. Control system according to claim 21, characterized in that the lighting of the tube is used to display its conductive Zus.tandeis that in the circle with this tube an electrically responsive, when igniting the tube operational arrangement (KR) is in front! that the starting means can start the elevator, and that means ' (SO) are available, which can be operated after the start of the elevator to extinguish the tube without interrupting the elevator movement, whereupon the tube lights 514/133 O 1203 XI / 35 a is interrupted to indicate to the elevator operator that the contact is interrupted can be. 23. Control system according to one of the claims 19 to 22, characterized by dine door closing electron tube (DCB) which are ignited when the starting control tube (SB) is ignited and thereby closing the closing means (7 C and / or 7 Tf) for able to operate the elevator. 24. Control system according to claim 23, characterized in that the door lock tube (DCB) is an electron tube arranged inside the elevator with a cold cathode and! a control electrode is that between the cathodes of Türsdhliess tube and an expensive tube (SB) a resistance! (RDCT) is switched on and that means (RDCP) are available to connect the control electrode to the resistor ¹ , so that the starting ■ control tube the cathode potential of this tube on the control electrode of the door locking tube is pressed; to stop their ignition . Causes. . ■■ ·. ' 25. Control system according to one of claims ι to 22 with closing means (7 C and / ■ or 7 H) to regulate the entry and exit of the elevator, characterized in that a Türs'clhließ electron tube (DCB) is present in the elevator, which can be ignited to close the Türsdhließ medium, and that Means (GT ?, ACi) are provided to ignite the tube in response to hand contact. 26. Control system according to claim 24 or 25 with arranged in the elevator, by a tube (SB) controlled means (KR) for. Starting the elevator, characterized in that the Türsehiliess tube (DCB) can be kept in the ignited state for the duration of the contact and that means (H), which occasionally allow the elevator to start by actuating the starting means, disconnect the tube from its power source able to separate. 27. Control system according to one of claims ι to 26 with closing means (7 C and / or 7 H) for regulating the entry and exit of the elevator, characterized in that a door opening electron tube (DOB) is present in the elevator, which is used for Ignition can be brought to open the door closing means for the elevator, and the means (GT ?, AC 1) are provided to ignite the tube in response to hand contact. 28. Control system nadh claim 27 with means (PM, 3 LS, 1 LS) for stopping the elevator on a floor, characterized in that the Tüföffnungs-electron tube (DOB) occasionally the actuation of these elevator stopping means for the purpose of stopping the elevator on a floor automatically able to ignite. 29. Control system according to claim 28, characterized in that a direct current source (B + 150, T?) Is provided for the door closing tube, the voltage value of which is not sufficient to ignite the tube, but sufficient to maintain an ignition once carried out that a source of alternating current or ζ chopped (or pulsating) direct current (GT ?, ACi) is present that a circuit for this tube with this source of alternating current or chopped (or pulsating) direct current can be connected to the tube by virtue of touch to be ignited by the elevator operator, because, ß a second power source (B + 150, AC 1) is provided for the tube, the voltage value of which is sufficient to ignite the tube, that means (2 LS) for connecting the tube to the a second power source are present, which are occasionally effective in the actuation of the means for stopping the elevator at a floor, and that electrically responsive means (DO) are present in the circuit of the tube to b to cause the door closing means to open when the tube is ignited. 30. Steuersystem'nach one of the preceding claims, characterized in that a manually ignitable electron tube (NSB) is present to activate the slowing means (PM, 3 LS) and preferably also the Arilialtemittel (1 LS) on the basis of certain stored calls (U or D) to prevent. 31. Control system according to claim 30 with a call pick-up electron tube (LCP) with a cold cathode, which can usually be controlled by the specific, stored calls (U or D) in such a way that it causes the elevator to stop at the floors, for which the calls are stored, characterized in that the tube (NSB) which prevents the slowing down means (PM, 3 LS) and preferably also the stopping means (1 LS) from being activated on the basis of these calls, is an electron tube with a cold cathode, which can be ignited by hand and, when ignited, prevent the call pick-up tube from igniting and • thereby cause the elevator to pass through with regard to these calls. 32. Control system according to claim 30 or 31, characterized by manually controlled means (NSRB) for extinguishing the passage tube (NSB) for the purpose of interrupting the passage operation. 33. Control system according to one of the preceding claims, characterized by a directional and / or display electron tube (URB or DRB) in the elevator, which can be made conductive when the elevator running in a certain direction on a floor by touching the hand, and by directional means (DjQ) to be actuated when the tube is opened 609 514/133 O 1203XI / 35a and move the elevator in the opposite direction. 34. Control system according to spoke 33, characterized by means (EX, H), the occasional operation of the FahTstuhlanhaiteriiiittel, in which the elevator at dlem furthest in a certain direction of travel, a stored. Call having the floor is stopped, can act to let the directional means (DG) adjust the elevator to the opposite direction of travel. 35. Control system according to one of the preceding claims for an elevator system with a plurality of elevators for a plurality of floors, characterized in that two electron tubes (U, U ' or. D, D') for each intermediate floor. are provided with a cold cathode, which are able to store a call for the relevant floor when ignited, that every ¹ tube has a circle (GR, AC 1) to cause it to ignite by manual operation, and means ( B - 30 and RU or RD) are provided in order to cause the automatic ignition of the other floor tube when one of the two tubes on the relevant floor is ignited. 36. Control system according to claim 35, characterized by means (LCC) which are able to cause the cancellation of both tubes of the floor in question when a floor call is answered. 37. Control system according to claim. 35 · or 36,. characterized in that the lighting of each tube (U, U ' or D, D') after ignition is used as an indicator for the completed call storage and that the two tubes of each floor are connected to each other in such a way that when a tube is ignited, the other is caused to ignite in order to also display the call storage carried out on this other tube. Referred publications:
German Patent Nos. 542672, 644357; Elektrotechnische Zeitschrift, Issue B, Vol. 4, Issue 9, pp. 246 to 248 v. September 21, 1952. For this purpose 3 sheets of drawings