US1889312A - Elevator control system - Google Patents

Description

Nov. 29, 1932. E. GALE I 1,389,312

' ELEVATOR CONTROL SYSTEM Filed March 29. 1927 2 Sheets-Sheet 1 INVENTOR ,FryresfL. Gale ATTORNE Nov. 29, 1932. v GALE 1,889,312-

ELEVATOR CONTROL SYSTEM Filed March 29. 1927 2 Sheets-Sheet 2,

.x'NvENToR finest L. Q ale ATTORNE Patented Nov. 29, 1932 UNITED STATES PATENT; OFFICE manner a. cannon YONKERS, NEW YORK, AssIGNon 'ro ennNnY ELEVATOR COMPANY,

' INC., on NEW YORK, N. Y., A CORPORATION or PENNSYLVANIA ELEVATOR CONTROL SYSTEM Application filed March 29, 1927. Serial No. 179,243.

' My invention relates to a push-button controlsystem for elevators, with circuits controlled by a movable or scale-beam platform.

In push-button control circuits for elevators, it is common practice to include a car gate switch in the operating circuit so that movement of the car cannot be effected by hall or car push-buttons until the car gate .is in closed position. But it frequently happens that the car gate is left open by the last passenger to leave the car, thus tying up the system as this prevents dispatch of the car from the hall push-buttons.

One of the objects of this invention is to provide an electro-magnet energized by the hall button circuits for closing the car gate switch or a by-pass circuit around it, and to mechanically connect such magnet with a movable car platform in such a way that any load on the platform will render the magnet inoperative. Such an arrangement in eifect provides means to control the switch in accordance with tell-tale positions of the platform, so that the magnet with the platform unoccupied and the car gate open, renders the system operable for hall button dispatch,

but with the platform occupied closure of the car gate is necessary to render the system operable for car button dispatch.

Another object of the invention is to provide an electro-magnet movable by the movable car platform to control multiple switches, one of which controls a byass circuit around the car gate switch and t e other a car light circuit to be opened when the car is unoccupied and not under dispatch,

but to be closed when the car is unoccupied and under dispatch by a hall button, so that the empty car will arrive lighted at its destination,'the car light switch having a delayed opening at such time and being arranged to remain closed so long as the car is occupied.

'Another object of the invention is to provide non-interference contactors for a pushbutton system of circuits to be controlled by mechanism of a novel construction having new mode of operation.

A still further object of the invention is to provide push-button controlled circuits exelusive of the car gate switch and reversing switch windings whereby operation of a car or hall button conditions the system to estabhsh direction for car travel and predetermines the stop without efi'ecting car move-' unoccupied.

Other objects of the invention will appear hereinafter, the novel combinations of elements and arrangement of parts being pointed out in the appended claims.

Referring to the accompanying drawings,

Fig. 1 illustrates in a more or less diagrammatic manner, a push-button control system embodying the present invention; and

Figs. 2 to 4 inclusive illustrate alternative constructions and also modified systems of circuits.

In the drawings, C designates the elevator car, comprising in its construction a platform D supported by scale-beam apparatus Eto have vertical movement to two different positions indicative of car platform condition as to whether it is occupied or unoccupied. A car gate G may be of any well known type adapted to be closed manually. Secured to the gate is a roller 4 to coact with the car gate switch or circuit controller H to close the same with the car gate in closed position by engaging a movable member such as the pivoted arm 1, and movement of the gate to open position disengages the roller from said armto permit the latter to open the car gate switch.

Other elements which go tomake up the push-button control system comprise hall and car push-buttons designated h. Z2. and 0. 1)., floor relays f. 1"., floor stop controlling mechanism f. 8., up and down direction relays 8 and9 respectively, hoistway door contacts 12, non-interference switch 10, holding relay 11, and up and down reversing switches in the form shown in Fig. 1, the car gate switch arm 1 constitutes the armature for an electro-magnet K. The eleetro-magnet is connected by a rod and lever connection 6 to the scale-beam lever 7, by which it is rotated bodily about a support 5. When the car platform is in unoccupied position, the electroanagnet K is in operative position as shown with respect to its armature or switch arm 1, so that when energized its magnetic lines are effective to actuate the switch arm to close the car gate switch. ,lVith the car platform in occupied position the electromagnet is rotated into inoperative position so that its magnetic lines are ineffective to close the car gate switch.

In accordance with the present arrangement of circuits, the car gate switch and the reversing switch windings are in a circuit exclusive of the push-button circuits, so that with the car at rest and all circuits dead, all

the hoistway doors closed and the car gate in open position, any floor relay other than the one corresponding to the landing at which the car is standing, can be set by button operation together with an up or a down direction relay, depending on car position and the button pressed. Thus the push-button system is conditioned to predetermine the car stop and establish direction for car movement, with the car gate open, without effecting car movement. This is so because the circuits for the reversing switch windings are exclusive of the push-button circuits and are controlled by the car gate switch also exclusive of the push-button circuits, but dominated by the hoistway door contacts. Hence, with all hoistway doors closed, car movement is rendered effective by closing the car gate switch to complete at that point an energizing circuit for an up or a down reversing switch winding in accordance with the direction relay closed by button operation. The electr0-magnet K is energized by either hall or car button operation and will be rendered effective by movement of the car platform when unoccupied to close the car gate switch or will be ineffective to close this switch if the car is occupied. Therefore, the electro-magnet K is positioned by the platform position to close the car gate switch only when the car platform is in unoccupied tell-tale position, to render car movement effective by hall-button operation even though the car gate be in open position.

Let us assume that the unoccupied car is at the third floor landing with the car gate and car gate switch open and all the hoistway doors closed, and that the first floor hall button 20 is momentarily pressed. By pressing this button a circuit is closed as follows: from a plus main 21, through the hoistway door contacts 12 to wire 23, noninterference relay 10, wire 24, hall button 20 to wire 25, first floor relay winding 19 to wire 26, floor controller s. to wire 27, winding 28 of the down direction relay 9, wire 29, back contacts 30 of up direction switch 8, and thence by wire 31 to the minus line. The down relay 9 now operates to close its contacts 13 in a circuit for the down reversing switch winding 32 to establish direction for car travel. This reversing switch winding circuit is exclusive of the floor relays and is dominated by the hoistway door contacts and the car gate switch, so that even though a fioorrelay and direction relay may be set by hall button operation with the car gate switch and car gate open, the hoisting operation is not rendered effective until the car gate switch and all the hoistway doors are closed to complete an energizing circuit for the down reversing switch winding 32. With the car platform unoccupied, the electromagnet K assumes its operative position as illustrated, to which position it is shifted by being bodily rotated through the connection with the car platform by the action of a balancing spring 17 which moves the platform upwardly as the last passenger steps there from. The electro-magnet K is included in the self-holding circuit 18 for the floor relays and will, therefore, become energized by operation of the first floor relay to close its sclf-holding contacts 22. The electro-magnet K being energized and in its operative position, will actuate the switch arm 1 to close the car gate switch contacts H and thus complete the circuit for the down reversing switch winding 32 to close the hoisting motor circuits (not shown) and start the car.

The completed circuit for the down reversing switch winding may be traced as follows: the same as heretofore traced up to a junction 33 with the wire 23, wire 34, through car gate switch contacts H, wire 35, top contacts 13 of down direction relay 9, wire 36, down reversing switch winding 32, and thence to the minus line by wire 37.

From the foregoing description it will be seen that movement of the car platform shifts the electro-magnet K to two different telltale positions which are indicative of unoccupied and occupied car condition, and that this shifting of magnet position does not of itself affect the contact mechanism which is associated with the magnet.

A passenger first to occupy the car causes its platform to move downwardly a limited distance to be seated against resilient stop members 78. This movement shifts the electro-magnet K bodily, by rotating it to an inoperative position with respect to the car gate switch arm 1. Hence, with the car platform occupied, it becomes necessary in order to render the hoisting operation efiective by car button operation, to close the car gate switch by closing the car gate in order to complete the circuit for a reversing switch winding.

From the detailed description already given for hall button operation, it will be to car movement while under carbutton or ball button dispatch, this relay operating in Conjunction with the self-holding relay--11 for car button operation in a manner to prevent restoration of the hall button feed circuit when the car stops, unless and until. a hatch'way door has been opened and again closcd.-"- 4 -'In the Fig. 2 illustration, the system of circuits is substantially the sameas in -Fig. 1

excepting that herein a switch 38 controls a by-pass circuit 39 around the-car gate switch which is closed when the car platform-is unoccupied to render the hoisting operation effeet-ire under such car condition hall button control even if the car gate is in open position.- This Iby-pass circuit is opened when the car-platform is occupied to necessitate closure of the car gate to render the hoisting' operation'eitective byrcar button control.

The electro-ma gnet K in this instance is supported by a verticallymovable guide rod -40 which-through-tell tale movement of the car platform 'shi fts the electro magnet- K bodily in a straight line movement with respect to its plunge 41 which is eonnected'to the switch arm 4-2. With suchan arrangement, when the platform is unoccupied the magnet is caused to shift by movement of the platform to decrease the air gap between the plunger'and the core 43 of the electro-magnet, so that when the magnet is energized its magnetic lines are effective to actuate the plunger to close the by-pass switch 38. By closing the by-pass switch 38, the hoisting operation is rendered eifective by hall button-operation, with the car gate and car gate switch open and the car unoccupied, in the same manner as effected by closing the car gate switch by the shiftahle magnet K in the Fig. 1 illustratron.

Movement of the car platform as effected by the first passenger to step thereon shifts the electro-ma-gnet K to increase the air gap the hoisting operation effective by car button control, the car gate must be closed to close the car gate switch.

In the Fig. 3 illustration, the circuits are substantially the same as in Fig. 2, the essential' di flerence residing in the provision of an electro-im agnetically operable "by-pass switch 38 of a modified constructionr In this modified construction, one ofthe contacts-of the bypass switch 38 is moved from an inoperativeosition indicated by dotted lines to anzoperative positionillustratcd in full. lines within range-of its coacting contact. This movement effected by thezca-r latform does not close the switch, but p aces one contact in position to be engagedbyits coacting contact when the latter-is actuated by energization of the .electro m-agne't K- and in such manner the by-pass switch is closed;

' It will thus be seen ltha-t'the ca-r platform shifts but :does not close a contact by its movement when unoccupiedias by the last passenger stepping-therefrom, hut:closing of'the I-contacts isthen rendered effective :by ener ization of the electro-anagnet K -'Hence, t 'e closed by-pass switch renders the. hoisting operation effective as controlled by ball :but-

-.ton operation with the car gaterand '1 the car gate switch open if the car is unoccupied;

'Movement of the car. platform as effected by the first-passenger to step thereon, shifts :the contact to the position indicated by dotted lines outof range of its .coacting contact when moved to actuated position-as effected by the electro-magnet' K"; The? by-pass switch isv maintainedi'n such open-circuited position'so long as the car platform. is occupied, thus necessitating closure of the car gate to close the car gatefswitch to render the hoisting operation effective by car-button control; 1 Y

In the arrangement shown .in- Fig. 4, "the electro-magnet K is permanently energized and is shiftable bodily by movement of the car platform so that for unoccupied condition of the latter the electro-magnet assumes an operative position with respect to a switch 51, magnetically to close same against the actionofa springfil toclose a by-pass circuit 62 around the car gate switch. The system .is

thereby rendered operable for dispatch-operation by the hall buttons with the car platform unoccupied even with the roar gate and car gate switch in open position. With the system of push-button control circuits shown, the reversing switch windings are controlled directly by hall and car button operation as in standard practice instead of indirectly .as by direction relays-as illustrated in the other figures. I

The hall button .feed circuit may be traced as follows: from a plus wire 21, through hoistway doorcontacts'l2, wire '56 -to.a junction 57, the by-pass wire 62 and switch .51.to a junction 58, and from thereon to the hall push-buttons by way-of a wire 59 which innot under dispatch the car light circuit 53'is opened at contacts .45 and. also" at contacts 46 in a-shunt circuit around the contacts 45. However, with the platform unoccupied and under dispatch .by a hall button, one of the contacts- 46 i is shifted by "movement of the carplatform to a position within range of its=co actingcontactso that when the latter is in actuated positionias effected by energizationaof an electro-m'agnet 47 in the-self-hold- Ethe shiftablecontact to close the car. light on cuit. Thus Ethe .ca-r light circuit 53 .is closed by hall button dispatchof the fear, and the empty car will arrive lighted. The electromagnet 47 is de-energized when the car stops,

as bythe; automatic opening ofa floor relay, -but =thero'peningi of the .switch 46 is delayed by a dash-pot 49 insorder to maintain: the

ilightcircuit closed subsequently to car. stop,

a-sufiicient length oftime to enable a passen- 'ger--without delay to enterithe car. If the hall passenger should -not enter the car, it is evident that the light -circuit will be opened at theswitch46 at the-expiration'of ashort period of time But if the hall passenger does enter the car,'- his'act of stepping ont'o the car platform-moves the platform, and by so doingshifts the electro-magnet"K downwardly to an inoperative'position with re spect "to the by-pass switch 51' and into operl'ativeposition; with respect to'the switch arm 7 3. In such shiftedpositi-on: of-the electro- :magnet it operates magnetically to.- instantaneouslyppen the hall button feed circuit 59 at the contacts-44tothus-render the hell buttons inoperable as soon as and-while the car platform-is:occupied,and' at the same time close the-contacts 45'to close the car light circuit at that point. In such manner the car light circuit is closed by a'second circuit controlled magnetically by the electro-magnet K and indir ectly by movement of the car platform-.- '1 3 Since by occupying the our platform it is moved to shift the electro-inagnet K to an inoperative position so that its magnetic lines are'rendered ineffective with respect to the switch 51, the latter will thereby be rendered operable to be opened by the spring 61. Opening switch 51 opens the by-pass' circuit around the car gate switch so that it becomes necessary to close the car gate to close the car gate switch in order to close the car button feed wire 52 in order to render the car buttons operable to dispatch the car.

It may be desirable'to. allow-a short time period to elapseafter the last passenger steps off the car platform before restoration of the hall button-feed circuit at the contacts 44 is effected; To this end a clash-pot maybe provided for the switch arm-73. Or a dashpot (not shown) to retard the return movement of the car platform will accomplish the same result. The magnet being movable'with the platform will magnetically hold the contacts 45 closed during an appreciable movement of the electro-magnet -away from the switch arm73," and when such movement is suflicient to render the magnetic lines inefiective to attract arm 73, the spring '(7 will act to close the non-interference contacts 44 and open the car light circuit contacts 45. The

.ma'gnet K? .will then be-in' position to close the contacts 51. 9 ingcircuit 48 of the'Zfloor-relays, it engages For hall button dispatch of the car, enerigization ofv the electro-magnet 47 actuates one of the contacts 46 to engage its cooperating shiftable contact to close-the car light circuit. Such engagement of the contacts 46 open-circuits back contacts 50, both of which are shiftable bodily together with the magnet K and with one of the contacts 46. Said contacts 50 are in series with the non-interferencecontacts44 in the feed circuit of the hall push-buttons, and since the contacts 44 are .closed-with-the car platform unoccupied,

they will not function to prevent interference to movement of the car while under hall button dispatch. 'However, for unoccupied car condition, it will be seen that back contacts 50 are op'en-Circuited by energization of the electro-magnet 47 when a floor relay closes its self-holding circuit and thus interference to movement of car while under dispatch bv aha-ll button prevented. The dash-pot- 49,

=bydelaying the opening of the light circuit contacts 46, likewise will'delay the closing of thenon-interference contacts 50, so that a hall passenger is given ample time to open thehoistway' door and occupy the car before restoration of the hall button feed circuit at contacts 50.

I It will be seen that the electro-magnet provided herein. as in Fig. 1 for example, conseen that the energization of the electro-magnet is controlled manually in both of its telltale positions but that it is effective in only 'one of said positions magnetically to influence the switch to control its closing and opening, and that when it is in its inoperative or ineffective positions, as it is when anyone is in the car, the gate switch can be closed only by closure of the car gate.

Having thus described the invention, what I claim is new and desire to secure by Letters Patent of the United States is 1. A system of control for elevators comprising in combination, a car having a gate, acar gate switch, closable when the car is occupied only by the car gate, and magnetic switch; exclusive of;- said circuitsiand (Wu-- trolled to be closed magnetically to etfect carmeans for closing said. switch with the. car unoccupied. i p z 2. A system of control forelevators comprising in combination, a car having a gate, push-button control circuits, and acar gate dispatch. r

a car gate switch controlled thereby,- selectively operable ,hall push button contaolled circuits,-andclectrmresponsive mean s con-. trolled .byssaid push buttons. to close said; switch and;therebyellectcar dispatch. a 4. A. system of control tor elevators. com==' prising in combination, azcargate switch and anuallycontrolled.el ectigo-responsive,means to close the car gate switch.

5. A .system of; .control .ipr. elevators com prising incombinatio'n, a car. having agate,

a car, gate switch controlled. thereby,;- reversing s it he h s n t ng=w dm ,.s d; car; gate switch being-in, the circuit of said. 4 windings, and electroresponsive means-ar ranged to close said-car gate switch.

6. system of; control for elevators comprising in combinatioma car. having ,a gate, a

car gate switch. controlled thereby, selective ly operable. hall. ,andmar push-button controlled circuits exclusive of said gate switch,

reversing switches having operative windings n a g a ici c it =..o t l by aidl gate switch. to, close .said reversing switches to eilect car dispatch, and electr c-responsive; means controlled by saidpush-buttom circuits 5 g 3 3 her, a power device for actuating said mem- 7. .A system of controlior elevators com-- to ,closesaid cargate switch.-:...-

prising in combination, a carhayinga telltale movablezplatform, and anelectro-magclose the switch with the car occupied.

8. In combination, an elevator car having a, platform movable independently'of the car frame, a power device movable b said platform movement, and a member a apted to be actuated by said power device.

9. In combination, an elevatorcar having a platform movable independently of the car frame, and a magnet having its air gapchanged by movement of said platform.

10. In combination, an elevator car having a platform movable independently of the car frame, an electro-magnet having its air gap changed by movement of said platform, and means to be influenced and non-influenced by said electro-magnet, depending on such change of air gap.

11. In combination, an elevator car having a platform movable independently of the car frame, a push-button system of control comprising an electro-magnetically operable noninterference switch mechanism, part of which is movable by said platform to render the magnetic efiect efi'ective to open-circuit said mechanism when the platform is occupied.

12. In an elevator system, a weight responsive elementassociated with a car, arranged to assume different positions when p :5 the car isoccupied orunoccupied a movable 3. A system of control.forelevatorseompris ngm combination, aq-ar havmg agate,

member, means to control car operation, and a power devicc for the movable member controlled by said car control means and conditioned by said element to render the saiddevice eiiective or .inefiect-ive. to move said member. I

13.; an elevator system, a weight responsive, .element associated with a car, arranged to assume, different positions when. the car is occupied or unoccupied, a movable member, means for actuating said movable member operatively controlled by said element, and manually operable means for renderingltheoperation of said actuating means effective to move said member.

, 14. In an elevator system, a weight 156 sponsive elementassociated with a car, .arranged to assume different positions when the car is, occupied-or unoccupied, a movable.

member, and a power device movable by said weight responsive element torender its influence efi 'ective to actuate said member when said element and said device are of theirpositions.

l5. ln an. elevator system, a weight responsive element associated. with a car, ar-

in only one ranged to assume dilferent positions when the v carisoccnpied or unoccupied, a movablemember, manualmeans for controlling the energization thereof, said device being movable by said element to positions to render its in,- fluenceoperative or inoperative. v

.16. In .an elevator system, a weight responsive element associated with a car, arranged to assume difierent positions when the car is occupied or unoccupied, a movable ed with and positioned by said element whenthe latter assumes one of such positions for efiectiveoperation independently of said elementto close a circuit.

18. In an elevator system, a weight responsive element associated with a car, arrangedto assume different positions when the car is occupiedor unoccupied, a circuit controller, and means conditioned by such elemen; "for "effective s sh independently 1 of said "element upon said-circuit controller-. "'19. In "an" elevator system, a:- weight re sponsiv el element" associated with star,- ar ranged to assume different positions a when the carisoccupied or unocc'ii'pied, a circuit controller, and electro-responsive means con: dition'e'di bysaid element, to thereby render it operative to actuates'a'id circuit controller when sa dele'ment assumes 'one'of its positioh'sf'l' I I 'JQOI'I'n an elevator system, a weight responsive element associated "with *a car, arranged to assume different positions when the caris occupied or unoccupied;- a circuit controller,.and means positioned upon said element-assuming one'ot itspositions to actw (2;; In anti-avatar ystem, a weight re- 2.7- a, w 1,, sp nsiveelement associated with acar, ar-

ranged to assume different positions when the caris occupied or unoccupied, a circuit controller, e1ectro respoiisivemeans for actuoegapiea uiiocc' ipied, circuit controller,

and a p er (1 4 yic'e' foi' actuating the 'circ'l. controller a1 rangedto bel e iiergized withsai elementin either trips positions, and being" movable by said element to'operative and inj operativepositions;

23. In an el evator's ystem, a weight responsive element associated with a car, arranged to assume different positions'when the car is '00- cupied or unoccupied", a circuit controller, a

power device for actuating the cir'cuit controller,. .'sai d device exerting its influence in both positionsot said element and being movable by sa d element to :POSItIOIIS' to render its 1nfiuence' effective when the element is in only one of its positions.

24. In an elevator system, a weight responsive element associated with a car, arranged to assume difl'erent positions when the car is occupied or unoccupied, a circuit controller, a powerdevice for actuating said clrcuit controller movableiby said, element to, render its influence on the circuit controller efiect'ive and inefiective, manual means to connect said device with a source otpower supply, and my means automatically to disconnect said device rom th s e supp y v 25. In an elevator system, a weight responsive element associated with a ,car, arranged .toj have' a tell -tale, movement, and electromagnetically operable means on the car conate Zsaid circuit con'troller, and moved out or operative position upon theeiement assuming its other po's1t1on; I l

trolled-by said tell-tale movement of said element to render its magnetic effect operative and inoperative.

26'. In" an'elevatorsystem, a weight responsive-element associated with a car, arranged to 'have a' tell-tale movement, and an electromagnetically operable device, part of which is movable to different positions by the tellta'le'mov'eme'nt of said element, one of which renders the magnetic effect operative and the other inoperative. 27. In an elevator system, a weight responsive element associated with a car, arranged to have a' tell-tale movement, and an electromagnetically operable device, part of which ismovable-to difierent postions by the telltale-movement of said element, one of which renders'the magnetic efiect effective to actuate another part of said device.

'28. In an elevator system, a weight responsive e1ement' associated with a car, arranged to ihave'a tell-tale movement, and a magnet movable by the tell-tale movement ofsa-id element to operative and inoperative positions? y 29. In an elevator system, a weight responsive element associatedwith a car, arranged to have a tell-tale movement, and a magnet having its "air gap changed in accordance with the tell-tale movement of said element. 7

-30 1mm elevator system, a weight responsiv'e" element associated with a car, arrang'dto have a tell-tale movement, an elec-' tro magnetfand armature therefor, one of the twobeing movable independently of the other by the tell-tale movement of said element to change the air gap to render the electro-magnt {efi'ective and inefiective.

"3151a an elevator system, a weight responsive element associated with'a car, arranged to have a,te1l-talc movement, and an electro-magnetically operable switch, part of which is movable to different positions by the tell-tale movement of said element, one of which jrenders the magnetic eflect effective to' closesaid switch, and the other of which renders itineffective to close said switch.

32. In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, a switch and an.electro-magnet, one of the two being movable to different positions by the tell-tale movement of said element to render the energized electro-magnet operative and inoperative to close'the switch.

33. In an elevator system, a weightresponsive element associated with a car, arranged to have a tell-tale movement, a switch andan electro-magnet to actuate said switch, movable to difierent positions by the tell-tale movement of said element to render its magnetic efi'ect effective and ineiiective.

' 34. In an elevator system, a weight responsive element associated with a car, ar-

ioo

(xiii spon'siyei elementa'ssociated with raiiged to have al-tel'l-tale' movement, a switch,

and an electro-magnet to actuate said switch, movable to' di'fierent positionsby the tell-tale movement of's'aidelement td render its mag netic efieca-efieetive amr ineffective, and means-independent of the movement of said element fofctihtroilirig the energiaation 0f su-ie magnet."-- H f 35. In an elevator systems ranged whaveatelr-taleniove' t wit'ch, an electro-magnevto tau-ta sel manual means tojel'oseaii I I electroqnagnetf ii ndnieans controlled automatically by the car to open said circuit.

36. In an elevator system, a weight responsive element associated with a car, ar-

ranged to have a tell-tale movement, a selectively operable push-button system of control, a movable member, and a power device to actuate same having its power supply controlled by said push-button system and its influencing elfect controlled in accordance with the tell-tale position of said element.

37. In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, a selectively operable push-button system of control, a circuit controller, and a power device to actuate same having its power supply controlled by said push-button system and its influencing effect controlled in accordance with the tell-tale position of said element.

38. In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, selectively operable car and hall push-button system of control, a circuit controller and a power device to actuate the same, having its source of power controlled by said push-button system, movable to different positions by the tell-tale position of said element to render its influence effective and inefiective.

39. In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, a selectively operable push-button system of control, a circuit controller, and a power device to actuate same having its power supply controlled by said push-button system, and being movable by the tell-tale position of said element so that with the car unoccupied it operates to both close and open said circuit controller, and with the car occupied its exerted influence is ineffective to close Said circuit controller.

I dispatch without effecting such dispatch, and an electromagnetically operable switch conner'gizi'ng errata resend- T AVAILABLE com switch to control dispatch of the car, part of said switch being movable by said element Y to render it effective to close the switch with movable"to difierentpositiefis by the tell-tale Y movement of said element torende'r' fitic fie t efi'ectiv nwineflectiv;

the car unoccupied.

- 42. In an elevator system, a weight re sponsive element associated with a car, arranged to have atell-talemovement, reversing switches having operating windings, and an electro-magnetically operable switch 'to control said reversing switch-winding circuits, part of which is movable by'said element to. render it effective to close the switch with the car unoccupied,-and inefi'ective to close the switch with the car occupied.

43. In an elevator system, a weight responsive element associated with a car, arranged to have a'tell-tale movement, selectively operable push-button controlled means, reversing switches having operating windings, and an electro-magnetically operable switch operable together with said means to control said-reversing switch winding circuits, part of said switch being movable by said element to render it elie'ctive to close the switch with the car unoccupied, and ineffective to close the switchwith the car occupied.

-44. In-an elevator system, a weight responsiveelementassociated with a car, arranged to have a tell-tale movement, push-button controlled circuits including non-interference contacts, and electro-responsive means to actuate said contacts, having an air .gap changed in accordance with the movement of said element to render said device operative and inoperative.

&5. In an elevator system, a weight responsive element associated with a car, arranged to-have a tell-tale movement, said car having a gate, a car gate switch controlled by said gate, an electro-responsive actuator for said switch, and means controlled by the tell-tale movement of said element for rendering said actuator effective and ineffective.

4.6. In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, said car having all) having'a gate, a car-gate switch controlled thereby, a push-button system of circuits con.- ditioned by operation of either a hall orcar button regardless of whether the car gate is open-or closed to establish direction for car dispatch and predetermine its stop, car dispatch being effected by closing said gate switch, and an actuatorfor said gate switch movable to different positions by. the telltale movement of said element to be effective and ineffective. T -i 48. In an elevator system, a Weight responsive element associated witha car, ar-. ranged-to have a tell-tale movement, said car having agate, manually controlled means to establish direction for car dispatch and predetermine its stop regardless of. whether the :car gate :is openior closed,:.without efwfecting car movement, a switch operable byclosing to effect 'car' movement, andmeans operable in accordance with thetell-tale po-: sition of-said element to control said switchto close and open independently of movement ofsaidelement. f 49. Inan elevator system, aiweight responsive'element associated with a car,'ar ranged to have a tell-tale-movement, a car ate, manually controlled meansto establish direction 'for car dispatch and to predetermine a stop without eifecting- -car dispatch, a car gate switch arranged to be actuated by the car gate, and an electro-magnetic actuator for said switch, a part of said actuator beingmovable bythe tell-tale movement' of said element towlrender it efl'ective5to=close the switchwvith' the car unoccupied -to efi'e ct L car dispatch, and to render it inefiectiveto clos the switch with the car occupied. z '50; In an elevator system, aweight responsive element associated with a car, ar ranged to have a tell-tale movement, said caihaving a gate, a switch, selectively operable push-button controlled circuits exclusive of said switch, reversing switches having operative windings and having a circuit controlled by said switch, and an electro-responsive device to actuatesaid switch movable by the telltale movement of'said element to operative and inoperative positions.

51, In an elevator system, a weight responsive element associated with a car, arranged to have a tell-tale movement, a-car gate, a car gate switch arranged to be actuated by the car gate, selectively operable push-button controlled circuits exclusive of said switch, reversing switches having operative windings and having a circuit controlled by said switch, and an 'electro-ma'gnet in said push-button controlled circuits arranged to actuate said car gate switch, said magnet being movable to different positions by the tell-tale movement of said'element, to be effective to close said gateswitch with-the car unoccupied and the cargate open, and to be ineifective'to influence saidgate switch with the cart-unoccupied. v

52. :In ,an elevator. system, a weight responsive element associated with a car, arranged to have a tell-tale movement, a movable circuit controller on the car, and means

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