US1291530A - Elevator. - Google Patents

Description

LRJACKSONJB.

ELEVATOR. APPLICATION FILED NQV- 6| ISIS. 1,291,530. Patented Jan. 14,1919.

I 5 $HEETSSHEET I.

1721267 1170 7." Jose 27L R. JKLC7C507'L J77 1. R. JACKSON. JR.

ELEVATOR.

APPLICATION FILED NOV. 6,19,5-

1,291,530. Patented Jan. 14,1919.

6 SHEETS-SHEET 2.

v 'f Lven/bo 7". Jase 29h, [@Jadwom J77 l. R. JACKSON, In.

a ELEVATOR.

APPLICATION FILED NOV- a. 19:5.

1,291,530. Patented Jan. 14,1919,

171/067-0156 7 7, Jose 072', jzlJacicsozz; Jr'r".

J. R. JACKSON, ll.-

usvnoa. H APPLICATION FILED NOV- 6,1915- 1,291,530. Patented Jan. 14, 1919.

6 SHEETS-SHEET 4- Jose hjZ tJackjam J5? 1. n. JACKSON, 1R.

ELEVAIOR.

nrucmou FILED nov. 6. m5. 1,291,530. Patented Jan. 14,1919.

, 0 SHEETS-SHEET 5. f

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.99 i 2 1. J (L 5 7 Jb5e v7Lfi.Jac/c0w=fi J. R. JACKSON, 3n.

ELEVATOR.

APPLICATION FILED NOV- s. 1915.-

Patented Jan. 14,1919.

6 SHEETS-SHEET 6- JM W UNI ED STATES PATENT OFFICE.

JOSEPH 11. Jackson, m, or :eosrron, massacnnsnrrs, ass renon ro anonzo B. SEE,

or BROOKLYN, new YORK.

ELEVATOR.

Specification of Letters Paten Patented Ja-n914, 1919.

a lication filed November 6. 1915; Serial no; 5997s.

4 To aZZ whom it may concern:

I Be it known that I, JOSEPH R. Jackson.

J r.,' a citizen of the United States, and a resident of Boston, in the county of Suffolk and Commonwealthof Massachusetts, have invented an Improvement in Elevators of "which the following description, in connecof the passengers.

The character of the invention may be best understood by reference to the following'de scription of an illustrative embodiment the accompanying dr'aw+' thereof shown in ings, where n,

l Figures 1) gramm-aticallvan elevator car, operating and "controlling instrumentalities and electrical -'25 circuits and connections therefor;

Fig. 4 is a view showing a side elevation of an elevator car in. an elevator well extending through 'severalfloors of a building,- a motor, brake and other devices forcontrolling the Fig. 5 on an enlarged scale 1s a front elevation of the elevator car in a'sect-ion of its well and controlling inst-rumentaht es associated therewith; d Fig; 5 is a detail of a dev ce show-n in Fig. 6 an end-elevation of'the car shown Fig. 5;

in'Fig. 5 and a vertical section through a portion ofthe wallof the. well showing a floor door andmeans for interlocking said door-with the car door;

F igr'i' on an enlarged scale is a horizontal section taken on line 77 of Fig. 6; Fig. 8 onan enlarged scale is a view partly in side elevation and partly in vertical section of a'conibined electromagnetic opening device and check for the car door: and

Fig. 9 is-a view partly in side elevation and partly in vertical section of a timing device for controlling the switch for breaking the circuit to the door opening device.

Referring to the drawmgs the lllustratlve est floor level.

2 and 3 collectively show dia travel on a track 39 mounted on apparatus shown therein as embodying the invention comprises .an' elevator car 5 (Fig. i) carried by in a well' 7 extending through several floors of a building, four floor levels being shown herein for the purpose of'illustration. The car is carried by a cable 8 passing about suitable guide pulleys and connected to a winding drum 9 shown herein located at the low- This drum has a worm wheel 11 fast thereon meshing with a worm 13 on a shaft 15-o-f an electric motor 17. The motor shaft is provided with the usual electro-magnetically operated brake 19; v

The drum shaft has a sprocket wheel 2]; thereon connected by. a sprocket chain 23 with a sprocket wheel 25 which rotates a floor selector wheel 27 to be described. I

Panels :29 and 31 are located adjacent the motor andcarry electrical instrumentalities to be described Referring now to Fig. 5, the elevator car is provided with a door or gate 33 connected by hangers 35 with rollers 37 adapted to the b0d v Of the car.

An important feature of the invention relates to means for automatically opening the car door on its arrival at a floor level. To accomplishthis an electro-magnetic device'is provided typified-herein in the form of a solenoid etl mounted on a bracket. 4:3 carried by the top beam of the usual sling c'arryin the car.- This solenoid is provided with a core, or plunger projecting through and beneath the coil of the solenoid and having an end pivotally connected to a short arm of a bell crank ii'fulcrumed on a pinon a bracket 49 mounted on the body of the car and havingi'ts long arm connected by a link 51 with the car door 33.

'hen the solenoid is energized as more fully hereinafter described, its plunger is drawn upward, thereby rocking the bell and sliding left of Fig.

at afloor I v H -having itS lower end connected to an spring will serve to cushionfthe. opening movement of the door and the energy developed bythus compressing the spring will, be available for subsequently automatically closing the door on the deenergization of the sdlehibid coil asmore fully hereinafter described.

To prevent the slamming of the do'or,

means is provided for checking its closing movement. To this end a valve is provided for the cylinder 53 communicating with the spacebetween'the piston and the lower end of the cylinder, said valve being shown herein i-n the form of a screw 61 tapped into said cylinder-adjacent the lower end thereof and haying a seepage port 63 therein. A washer 65. of leather or other suit-able material is int e-rposed between the head of the screw and thdcylinder. The screw will permit air to secp slo'wly through its port .63 and escape between the head of the screw and saidrfasher with greater or less freedom depending ,on the tightness with which the screw isadjusted to said washer and thus'the closing otthe door may be gradually checked as required. To limit the checking eflect of said .ta-lwe, to the final closing movement of the door; ,thecylinder may have a port 64 intermediate the ends thereof which will permit the. air beneath the piston to escape freely Y untilv the piston reaches'sald port in its downward movement. Then the valve screw .61. will serve to check the further move I I dlfi'erent floor levels should e locked 111 merit-of said piston ,,To permit the automatlc,

rocked-into a vertical channel 71 on the floor door. To hold this latch out of range with. -said channel excepting when the car is lever, there may be provided a rod elongated eye in said latch and its upper .end connected to r coil/I7 mounted on the car body. This sole- (noid ,is energized the core 75 of a solenoid by the completion of a be described, so long as the car is traveling between floors, but on the 'arrit'a'lof the car at a floor this solenoid is dz.- energized and its core is, permltted to drop and permit the channel 71 as shown in dotted lines in Fig. 7 .1 TO render thedownward movement of the rod 7 3 more positive, a helical spring 7 9 encircling the same is mounted on the rod simultaneous opening of the car door 33 and the door at the door and having a roller 96 adapted to be engaged by a long vertical lever 97 havlatch 67 to rock into the issuer and'c onfined-between a fixed guide 81 on the car door and a plun er 83'on the rod.

To'lock the. car. oor in closed position except-1n when it is at a floor level and the solenoid 7 is deenergized, the bracket carrying the solenoid may be provided with a stop 85'(Figs. 1 and 5) adapted. to be engaged by a-heel 87 on the upper end of the latch rod-73. This heel will be in line with the stop 85 when; the solenoid is energized and thereby will prevent the opening of the :door, but-on, thedeenergizat-ion of the solenoid said heel will drop down out of line with said stop and will no longer prevent theopening of the door. The upper end of the latch rod is also provided with a forked toe 89 adapted to receive the solenoid plungen 7 5 and engage the head 75 of said plunger when the door is in its closed position.

When the plunger drops and the heel 87 is out of range with the stop, this forked toe may slide away and separate from said plunger on the opening of the door and on the closing of the door it will automatically reeng age said plunger.

yieldingly limit the downwardroc'k- 7 ing movement of the latch 67 a spring finger 91. (Fig. 6) may be mounted on the door beneath the latch. This will serve to appropriately limit the downward rocking ofthe latch and hold the same in horizontal position to connect the car and floor doors,

but will yield and permit the latch to rock down beyond its horizontal position in the course of the upward travel of the car in case the latch strikes any obstacle on the wall of the well.

' ThGdOOI'S in the wall of the well at the closed position excepting when the car is opposite-a fioor level. -To accomplish this each floor door .is provided with a latch bar 93 (Fig. 1) adapted to-interlock with a dog l'ever95 pivoted on the'well wall adjacent ill ing its lower end pivoted on a bracket 99 at the lower end of the car and its upper end pivot-ally connected to toggle links 101,.

the meeting .ends .of which are pivotally connected by a link 102 to a plunger 103 of a solenoid coil 105.

This solenoid is energized while the car leverand rocks the latter in a contra-cloch-. wise'direction, disengaging the same from the floor door latch 93. The door isnow opened by the energization of the solenoid free to be opened with the car door,

' 1 An important feature of the invention'ref lates toj'means for holding the-doors open for a predetermined length of t me to allow a passenger to enter the car without interference or hindrance by the closing ofthe doori As stated the doors are automatically 41. Obviously, door cannot close until the circuit to the solenoid is broken. Toacoomplish this there-maybe provided a'timin device'typified' herein inthe form of a sollanoidlO'? (Fig. 2)"provided with'a plunger 109 having a lug 111 thereon adapted .to open a switch 113 in the circuit to the door opening solenoid,thereby denergizing the latter and permitting its spring 57 to become effective to rock the hell crank 47 in a contra-clockwise directionand closethe doors. The timer solenoid is energized simultaneously with the door opening solenoid, but theplunger of the former; is reger 109. The cylinder has a head 119 pro-' vided with a valve 121 similarjtothe valve described for the doorcheck cylinder 53 whereby the air is permitted-seen grad ually from the space in the cylinder above the piston and thereby check the upward movement of said piston. By adjusting the escape valve the air may be permitted to escape more or less freely as desired and the upward movementof the piston may be varied so that any interval of time desiredv may elapse before the plunger lug 111 will be effective to shift the switch 113 and deenergize the door opening magnet and permit the doors to close. a

The timer solenoid'plunger should drop quickly on the deenergization of the solenoid to 'allow the" switch 113 to close promptly thereafter. To permit this the cylinder has a port 122 adjacent the lower end thereofwhich will from the c-vllnder onfthedownward m'ove-.

permit the air to escape freely ment of the plunger. q

The elevator car may be provided with a dome light 123 (Fig. 1) which will be -au- 'toi'natically lighted when a push buttonat a floor is pressed to summon the car and will remain lighted while the car is 1n use. The car may also be provided wlth a l1ght'125 arm 141. W hen this magnet is energized cause the arm- 141 to'swing enable the" j passenger t rly .t thresholds ."of the car and flo ori doors and thereby assist (in avoiding m g y p in] the event that the, thresholds should not, be in 'registratiom Mea'ns is lighting; the;

provided for gautomaticall" 'threshold'light whil'e'the d rsare open.

T e car'. is provided witha" panel fconfveniently; mounted at'the side. thereof car'- rying push buttons 127 .correspond'ing to the number of the floors of the building: I

For purposes of illustration four such push buttons 3.1'9Sl1OW11 within the *car nu1n-.; bered,'1, 2, 3- and 4. Then'fany one of these buttons ispressed, 'it will despatch the panel is also provided with a stop button" 129 adapted to'be pressed .to 'arrest the'car while traveling between floors, butwithout" openin I the car door;

he oors are providedwith push buttons (Figs. 1' and'4) .located adjacent the- 'flo or doors and numbered in Fig. 1 of the diagram,l1, 2, 3'and 4 totorrespohd with the floor levels. If it is desired to summon,

the car from one floor to another, the'push button at the floor of the operator is pressed,- thereby despatching thefcar' to said floor. Havingdescribed various instrumentali ties .of the apparatus next will be described circuits and electrical connections therefor.

The circuit for the electr c motor '17 com-' prises a main positive conductor P v( Fig. 3')

connected: by'a conductor a with a contacti segment 133, the latter being connected by'aconductor'a with'the series field17 of said motor, said field being connected in turn by a conductor a? with a 'contactfsegment 135 adjacent the contact segment 133, said segment 135 being one'ofa series of'similar segments 'c0nnected..;'w1'th a r resistances 1'37. contact 139 carrled-by an arm 141 is adaptv ved to slide over-said resistance contactsand cut out resistances to increase'the speed of the motor. This 15 accomplished automatically by a holding magnet .143-containing a plunger 145 connected by a: link 14? with the more fully hereinafter described. it willy gressively cut out the res stances and in-f crease the-speed of the motor. Too rapid upward and pro movement of the arm is prevented by a dash *nected-by a bridgecontact 153 with a fixed contact 155. This hrid-ge contact carried by a lever 15Tfulcrumedintermediate its ends andadapted to'be rocked to cause said bridge contact to connect with said fixed ontacts by a magnet 1-59 adapted to been ergized by a circuitto-be'descnbed to: cause the car to trayel upward. adjacent the threshold of the car door to- 8 car to the 'floor'corresponding thereto. The

duetor a? with the motor armature 17 a connected in turn by a conductor a with a fixed contact 161 "adapted to'be connected by a budge-contact- 163 with a fixed contact 165,

' said bridge contact being carried by the magnet operated lever 157 referred to. 'The fixed contact 165 is connected by aconductor a with, a conductor a leading tothe main negativeline ivl To supplyeurrenj! to the shunt-field 17 of "-the' motor, a conductor a is tapped fromtheconductor ,a'.- referred to and is connected by a conductor a with a, hired contact 167 adapted' to be connected by bridge contact 169 'W1l3l1 a fixed cont-act. 171, said bridge confthctbeingf carried by the'magnet operated )leveifl 157.v The fixed-contact 171 is connected by-a conductor'a, with'the shunt field .of-th'e motor;- the latter being connected by a conductor a with the: conductor a" '5 connected to a'fixed contact 173 adapted to be 'connected the bridge' contact 163 referred-to oi -the lever: 157 with .the fixedcontact 165 connected by the conductors a 'and'a? withfthe main negative line.

- -Thus when; the lever 157 is locked by lts magnet-in a clockwise direction (Fig. 3) it will bridge the fixed contacts described and complete-the circuit for rotating the motor in a" direction for causlng the elevator car to travel'upward in its well.

i When the 'c-ircuit is thus completed "to the motor, acircuit is also;.-compl'eted to the u [agnet- 19 for releasing the brake. To ac-' 3.5

the-aco 'dflictor a and is connected to the f brake .magnet 19,- said magnet. being con-' complish this a conductor is-tapped from nectedzby'ia-conductor b with the conductor a. connected by the fixedeontact 17 3, bridge .contact 163, and fixed contact 165 with the conductors a? and a leading to the main negative. line;

When the lever 157 is rocked tocause its bridge contact- 169 to connect the fixed contacts 167 and 171, it also completes the circuit to the magnet 143 forpullingnup the arm-141 and cutting out resistances 1n the series field. This circuit comprises a, con- Iluctor m connecting the fixed contact 171 with the fixed contact 17 1 adapted to be connected by a swinging arm 17-5 ..with a conductor m connected toy-the magnet 143.

This magnet is connected by a conductor m with the conductor a referred to, leading to the conductor a and the main negative line N. On the energization of this magnet its plunger 147 will be pulled slowly up ward as checked by the dash'pot149 and thereby progressively cut out resistances in the series field to'increase the speed of the motor and eventually completely cut out the series field when the arm contact 139 reaches the contact segment 133 referred to.

When the motor is to be rotated in a direction for-causing the elevator to'travel reales downward in its well;'-a{lever-175"is rocked in a contra-clockwisedirection (Fig. 3) by the energization of ama'gnet'177, thereby completing the cir'cuitto-the motor for reversingthe 'same and also completing-the circuit to the brake magnet for releasing the I same.

Since the bridgecontact' carrying levers and their circuits for controlling the direction of the'motor'and the releasing-of the brake are of usual construction, further de:'

scription thereof is unnecessary herein. j

The levers 157 and 17 5, their 'c ontrolling magnets and the contacts cotiperating with. said levers may all be mounted on thepanel.

29 (Fig. 5-) referredto adjacent the motor.

Next will-be 'described devices and elec-.

trical connections therefor for energizing the magnet 159' for. rocking the switch lever' 4157 in a clockwise direction to cause the car to travelupward to a selected floor. This is accomplished by pressing either a button in the car or a floor button correcuit completed bythe pressing-of this but ton comprises a conductorc (Fig. 3) tapped from 'theconductor a leading from'the main To accomplish this the push button 131 at the second floor is pressed. The cir positive-line P, said conductor a being connected by a conductor 0 with a hand switch 179. Thisswitch is connected'by a conductor 0 (Figs. 1', 2 and 3) with a fixedcontact 181 mounted on the body of the car and adapted to be connected by a switch 183 with a fixed contact 185. This switch is urged away from said fixed contacts to open the circuit by a spring 187. To close the switch it is provided with a stem 189 adapted to be engaged by a cam finger 191 mounted on the car door and so arranged that it will hold the switch closed when the door is shut but will permit the switch to open when the door is opened. The fixed contact is connected by a'conducftor 0? with a fixed contact 193 mounted on 'the'well wall adjacent'a floor door. This fixed contact is adapted to; be connected by a switch195 with a fixed contact 197. The switch has'a stem 199 adapted to be, pressed downward to.

connect the fixed contacts by the cam finger 93 referred to'mountedon-t-he floor door.

When the floor door is opened a spring 201 Y pushes theswitch 195 upward and disconnects the same from said fixed contacts. The floor door operated switch 195 just descrlbed is located adjacent the fourth floor. The fixed contact 197 is connected by a conduc-.

. a Th switches 205, 211 and 217 for the third, second'and first ffloors are controlled by the doors attherr floors by cam fingers "similar to that described for the fourth fio'or.

- A fixed contact 219 is connectedby a conductor r with a fixed contact 220, connected in turn by a switch 220 to. be referred to,

, With-a fixed contact 220; The latter is connected by a conductor 1" Figs.l2 and 3) with ajfixedcontact 221adapte dto batonnected by a switch 223 on the motor speed regulator'arm 141- referred to with a fixed contact. 225. "The switch 223 will be hereinafter referred to as the non-interference switch because after either a car or a floor button is pressed to despatch the elevator it prevents interference with the control of the, elevator by any of the other push buttons inlthe car or at th floors for despatching thecar to difierent floors.- '35 conduc't'or'f (Figs. 1, 2 and 3) WVltlllJlililCh conductor-s one of which 7" leads tothe car The fixed contact225 is connected bv a push buttons 127 and the other branch 7' leads to the fioor push buttons 131.

It will be recalled in the example selected it is assumed it is. desired to call the car from the first floor-to the second floor. A

branch conductor f leads from the conductor 7 tea fixed-contact 227 adapted to be ond floor push button 131 with a fixed contact 23-1 .Rby aconductor 2 (Figsal, 2 and c'oilof a fioor magnet. 233 (Fig. 3) for the second floor. This magnet is connected by a conductor-2 with a branch conductor 2 leading to a fixed contact and with a branch connected by a switch controlled by thesec- This fixed contact is connected 3i with the conductor 2 .leading-to a-fixed contact 237.

'The fixed contact 235 is adapted to'be connected by a switch 239, to be described, with fixed contact241 the latter being connects ed by a conductor 2* with a conductor a leading to the magnet 159 for rocking the -'.lerer it)? to cause the motor to rotate in a direction to cause the elevator car-to travel upward.

The magnet 1-59 is connected by a conductor u with a conductor 24 connected to the conductor a". referred to leading to the main negative line N.

The fixed contact 237 referredto is adapted to be connected bythe switch 239 with a fixed contact 213 connected by a conductor with a conductor (Z leading to the magnet .177 for operating the lever for completing the circuit for causing the motor to rotate in a direction to lower the elevator;

When the elevator is beneath the second tloor. the switch 239 will bridge the con tacts 235 and 21 .1 in readiness to complete the circuit to the up-l'nagnet 159 on the pressing of a car' or a fioor button, and when the'car is above the second floor the switch 239 will bridge the contacts 237 and 243 in readiness to complete the circuit to the down-magnet on the pressing of a car or a. floor button. hen the switch 239 is in mid. position the car is at the second floor and the switch will interrupt the circuits to both the up and down magnets and then the pressing of a car or floor button on the second floor would not cause the car to leave the second floor level.

wheel as stated. is rotated by the-winding drum for causing the car to. travel up and down. The contour of thecam slot'is such that in the course of the rotation of the selector wheel the switch 239 will be brought automatically to its mid position when the 'car is at the second floor; to its position in readiness to complete the circuit to the upnlagnet when the car is beneath the second floor: and in its position in readiness to complete the circuit-Ito the down-magnet when the car is above the second floor.

A switch such as described is provided'on the selector for each of'the other floors and since the principle of operation is the same for all and the selector is of usual constru'c tion, further description thereof is unnecessary. Y

'When the push button 131 at the second floor is pressed it will complete the circuit as described --to the tip-magnet 159. This will rotate the lever 15'? in a clockwise direction and complete the circuits described to the motor and rotate the same in a direction to cause the car to travel upward. It will also energize thebrake magnet and release the brake. 7

It will be recalled this circuit passes; through ,the car door controlled switch and the floor door controlled switches. These switches are closed only when their doors are closed and therefore theyprevent the starting ofthe car until after all of said doors are closed.'

' It will be recalled the circuit to the upinagnet passes through the non-interference. switch 223. 'The arm 141 carrying this' iso switch as stated is moved upward on the energization of the mag et 143 in starting the motor. This automat cally opens the noninterference switch 223 and renders all of the other car despatching buttons ineffective. In order that the circuit to the up-magnet 159 may be complete after the breaking of the circuit by the non-interference.switch, a conductor r (Fig. 3) is tapped from the conductor r and is connected to a fixed contact 251 (Fig. 3) directly above the fixed contact 174 referred to. The arm 141 carrying the non-interference switch, in the course of its upward movement, shifts the arm 174 upward, thereby disconnecting the same from ,the contact 174 and connecting the same with the contact 251. The second floor magnet 233 referred to Is provided with an armature 233 adapted to connect a fixed contact 253, connected to the conductor 2, with a fixed Contact 255, connected in turn by a conductor 2 with the conductor r referred to. When the push button 231 for the second floor is pressed toenergize the magnet 233, it will attract its armature 233 and connect the contacts 253 and 255, The closing of the circuit at this point and the shifting of the switch arm 174 up into engagement with the fixed contact 251 will now .continue the completion of the circuit to the up-magnet and continue the completion of the circuit to the hold-up magnet 143 independently of and free from control by all of the car despatching push buttons.

The motor will continue to rotate to elevate the car until the car arrives at the sec 0nd floor, then the selector switch 239, folergized and permits its plunger to] drop and straighten the toggle links, thereby rocking the long lever 97 (Fig. 1) in a clockwise direction and releasing the floor door locking' dog 95.

Next will be described the circuit for energizing the floor door unlocking magnet 105. This circuit comprises a conductor 0 (Figs..1', 2 and 3) tapped from the conductor 6 leading to the brake magnet 19 referred to and leading to the door unlocking magnet 105 (Fig. 1). This magnet is connected by a conductor 0. with the conductor I) referred to, leading from the brake magnet to the main negative line N. Thus on the denergization of the brake magnet to apply the brake the dbor unlocking magnet 105 is deenergized, thereby 11nlocking the floor door.

' Also simultaneously with the denergization of the brake magnet, the magnet 77 referred to, is deenergized for unlocking the car door and interlocking the car door with the floor door. The circuit for the magnet 77 comprises a conductor 0 tapped from the conductor 0 leading to the floor door 1111,. locking magnet and connected to said car door unlocking magnet 77. The latter is connected by a conductor 0 with the con ductor 0 leading from the floor door un locking magnet to the brake magnet.

On the deenergi'zation of the magnet 77 its plunger will drop and with it the latch rod 73 (Fig.5), thereby causing the heel at the'upper end of said rod to move down out of line with the door locking stop and permit the door to slide open. In the course of this opening movement the forked toe of "said rod'disengages the plunger of the magnet 77.

The car is now at a floor level and the car door and the floor level door opposite thereto are unlocked and .interlocked in readiness to be opened. To accomplish-this, the, door opening solenoid 41 referred to isen ergized. The circuit for this solenoid co prises a conductor m (Fig. 2) which may be tapped from the main positive line and be connected by a conductor m with ;the{'coil of said door opening solenoid ,Figl 1). This coil is connected by a conductor 0: with a fixed contact 257 (Fig. 1). adapted to be connected by a switch 258 with a; fixed contact 257 connected in turnjby conduct-or m with a fixed contact 259 (Fig. 2) at the timer solenoid .for controlling the length of time the doors are heldopen. This lOt fixed contact 259 is normally connected by i the "timer switch 113 referred to, with a fixedv contact 261, said switch being-urged in its position shown by a spring 263. The fixed contact 261 is connected by a conductor 00* with a fixed contact 265 adapt-ed to be connected by a switch 267 with a fixed contact 269. The switch 267 is mounted on n armature of What may be termed the pil'ot magnet 271 adaptedto be energized as more fully hereinafter described. The fixed contact 269 is connected by a conductor a with a fixed contact 273 onthe push but.- ton panel in the car (Fig. 1), said fixed contact being adapted to be connected bv fl a switch 275 with a fixedcontact 277. The

switch 275 is normally maintained in the position shown to connect the fixed contacts '273and 277 bv the spring 279. The switch is adapted to be shifted to brea: said connection by the pressing of the push button,

to :start the car. The fixed contact 277 is connected by conductor 2', 2 and a in series with fixed contacts controlled by the push buttons for the other floors. The fixed contact 281 at the push button for sending the car to the fourth floor is connected by a conductor a with a coil for the pilot magnet 271 referred to, said coil being connected by a conductor 2 with the main negative line N. The circuit described for energizing the door opening solenoid 41 is normally closed excepting where interrupted by the switch 267 at the pilot magnet 271.

Next will-be described a circuit for energizing the pilot magnet on the arrival of a car at a floor level. This circuitcom-prises a conductor 2* (Fig. 2) tappedfrom the positive line m referred to and leading to a fixed contact 283 adapted to be connected by a normally closed switch 285 with a fixed contact 287. The switch 285 is mounted on an armature 289 coiiperating with a magnet 291 adapted to be energized by the pressing of the car stop button 129 referred to. The fixed contact 287 is connected by a conductor. a-

with a fixed. contact 293. This contact is adapted to be connected by a normallyopen The latter is connected by a conductor 2 with switch 295 with a fixed contact 297.

The switch 295 is controlled by a master.

magnet 303'in the form of a solenoid containinga plunger .305 having a nub 307 thereon. When the magnet is-energized the plunger will be drawn'upward with .its nub above the lever arm 301, but when the magnet is deenergized the plunger will drop and cause its nub to engage said arm and close the switch 295. Asthe nub moves-on doiwnward it will escape past the switch and the latter will be opened b v its spring 309.

To check the fall of the plunger when its magnet is denergized. the upper end of said plunger may be connected to a piston 311 in'a cylinder 313 provided with a valve 315 permitting the gradual escape of the air therefrom and the gradual drop of the pluner. c .T he master magnet 303 is energized at the same time the brake magnet is energized to release the brake. The circuit for the master magnet comprises .a conductor 0* (Fig. 2) tapped from the conductor 0 leading from the conductor I) referred to leading to the brake magnet, and said conductor 0 is connected to the .coil of the-master magnet 303. said coil being connect-ediby a conductor. 0 with the conductor.o' leading to the conductor 7) leading in turn to the main negative line N.

When the car comes to a floor level, the brake magnet is denergized to apply the brake and the master magnet 303 also is deenergized. This will permit its plunger to drop and close the switch 295, thereby completing the circuit to the pilot magnet 271 to energize the same. This. will cause its armature to rock up and close the switch 267, thereby completing the circuit to the door opening solenoid 41. The energization of the latter. causes its plunger 45 to be drawn upward, thereby rocking the bell crank i7 in a clockwise direction and opening the doors. s

It requires greater power to pull the solenoid 45 up to open the doors than to hold said doors open. After the plunger has been 5 pulled up by the solenoid a resistance 31? is introduced across the conductors m and r leading from the door opening solenoid 41. and the switch 258 referred to is mounted on a lever 319 having a spring 321 normally closing said switch. On the end of the plunpreviously unlocked car and .floor ger 45 is a lug 321 adapted to engage the lever 319 and open the switch 258 as the plunger'15 approaches its upward limit of movement. This will automatically introduce and render effective the resistance 317.

At the sametime the door opening sole- "noid is energized to open the door. the timing solenoid 107 is energized. The circuit for this solenoid comprises a conductor e tapped'from the positive line as referred to and connected to the coil of said timer, said coil being connected'by a conductor e with the conductor leading to the fixed contact 259. The rest of the circuit for the timer magnet solenoid is completed by the conductors and switches described for the circuit for the door opening solenoid including the switch 267 controlled by the pilot magnet. Therefore. when this switch is closed the 110 circuit will be completed to the timer.

As stated the switch inthe circuit to the pilot magnet isclosedfinerely momentarily as the nub on the plunger of the master magnet 303 passes the switch 295. The energi- 116 zation of the pilot magnet is continued. however. after the openingof said switch and circuit. This is accomplished on the closing of the pilot magnet switch 267 through the conductor a (Fig. 2) leading from the posi- 120 tive line through the timer coil 107, con- \luctor 6'. switch 113, conductor 1' switch 26?. conductor 2 leading to the car despatchin oush buttons. thence through conductor 2* 10 the coil of the pilot magnet 271 and thence through the conductor 2' to the nega-' tive line.

The timer solenoid being energized as described. its plunger 1.09 will be pulled gradually upward as checked by its dash pot until solenoid, permitting its plunger to drop back to its position shown in Fig. 2 and breaks thecircuit to thepilot solenoid 271, thereby permitting it's switch 267 to open. The opening of the latter'switch will inter rupt the circuit to the door opening solenoid independently of the opening of said circuit b the switch 113 so that on the deenergizat1on of the timer magnet 107 and the consequent closing of the switch 113 the circuit to the door opening solenoid will not be again completed. The circuit to the door "opening solenoid will only be completed on the renergizationofthe pilot solenoid as described.

When the car door was opened, the cam finger 191 (Fig. 1) withdrew from the stem of the switch 183, thereby breaking the circuit to the magnet 143 for holding open the noninterference switch 223 and permitting said switch to close and connect with the contacts 221 and 225 in the circuit to the car despatching push buttons. On the closing of the car door, the cam finger 191 closesthe; switch .183 and thereby places I th e circuit in; readiness to be completed for starting l-thecar on the press mg of a car despatching' button. Referringnow to the 'car stopbutton129, asstated this button is adapted to be pressed J30 when'rit is desired to arrest the ear in the conrseof its' travel from one floorto another.

Fori"'exainple. the car may have been despatched to the fourth floor and the passenger may have changed his mind and de- 35 cided to despatch the car to a-diflerent floor.

He therefore presses the stop button and after he has brought the car to a stop presses .the'appropriate-button. to send the car to ifthel floor desired.

The circuit controlled by the stopbutton ,;.co1n'prises a conductor 8 (Fig. 2) tapped from the positive line 'm referred to and connected to a fixed contact 337 adapted to be connected by the switch 339 of the 155 stop button with a fixed contact 341. The latter is connected by a conductor s' with thecoil of the'stop magnet 291 referred to. :saidicoilbeing connected by a conductor 8 with the negative line. 3 The armature 289 of the 'stop magnet carries the switch 220 "referred to in the circuit for the magnets forshifting the levers for closing the circuits to the motor and for deenergizing thebrake magnet. Therefore on theenergiza'tion of the stop button magnet 291, its armature noid includes a switcln28'5 carried by the The .pressing of the stop button, therefore, opens stop button magnet armature 289.

this switch and breaks the circuit to the pilot solenoid and prevents the car door from opening. This is important, since obviously it would be undesirable to open the car door between floors.

The stop button is pressed merely momentarily to stop the car. It is, therefore, necessary to provide a circuit for continuing the energization of the stop button magnet 291 after the momentary pressure on said stop button has been released. To accomplish this a conductor'n (Fig. 2) is tapped from the conductor leading from the positive line :0 referred'to and is connected to a fixed contact 349 adjacent the master magnet 303 (Fig. 2'). This fixed contact is adapted to be connected by a switch 351 with a fixed contact 353. The switch is normally held closed by a" spring 355. The fixed contact 353 is connected by a conductor n with a fixed contact 357 adjacent the stop button magnet 291. This fixed contactis adapted to be connected by a switch 359 with a fixed contact 361 connected by a conductor a with the conductor 8' referred to leading to the coil of the stop button magnet 291. The

coil is connected by the conductor 8 with the negative line as described. Therefore, when the stop button-magnet is energized, the switch 359 being then closed, the circuit will be completed to the coil and continue the energization thereof.

Thepressing of the stop-button not only deenergized the brake magnet to apply the brake, but also dene'rgized the magnet 303 and permitted its plunger 305 to drop. The breaking of the circuit to the pilot solenoid 271 at the stop button magnet prevented the opening of the car door by the dropping of the master magnet plunger 305, since it broke the circuit to the pilot magnet at the stop button magnet. After the nub 307 on the master magnet. plunger has dropped down past the arm 301 of the switch 295 there is no necessity, for continuing the interruption of the circuit to the pilot solenoid at the stop button magnet. Therefore, the hold up circuit for the stop button magnet should be broken. To accomplish this, the

master magnet plunger is provided with a Tug-363 *(Fig. 2') adapted to engage and open the switch' 357 and break'the holding circuit to the stop' button magnet. The

I master magnet 303 (Fig. 2).

opening of this switch occurs after the nub 307 on themaster magnet plunger has passed down out of range with the switch arm 301.

The dash pot for the timer 107 may be adjustedto delay the closing of the doors until after a predetermined time interval has elapsedsuch aswould be appropriate for average conditions. At times. however;

the passengers may desire to startrthe-can without waiting .for this time interval to completely elapse. This is accomplis'hed automaticallyincidentally to the pressing of i a push button in the 'car for starting the car. It will be recalled-that this push but- 5 ton controls two" .oircuits, one passing through the pilot magnet 271 and 'onefor completing the circuit-for starting the car.

The. switch controlled by the 'pushbutton fisarranged between'a set of contacts, for'one go circuit anda set of contacts for-the other circuit. Consequently, on pressing the push button the initial movement of the switch be awayfrom. one 'set and break the 5 circuit to the. pilotmagnet, and its .final 5 movement will bring -it into. engagement withjthe other set and complete the circuit for starting the-car. The'deenergization of -'-the pilot magnet "27l permits its armature. switch '267 to drop and break the circuit to- 30, the timer solenoid 107 and the door opening solenoid 41. The deenergization-of the lat-' ter will permit its spring to close the doors. 'Thus two purposes are accomplishedby each of the. car despatching push buttons tion andrendering the same easy to understand'and operate.

, ,Heretofore, 'so far'as I am aware, when the oar-is ata floor level, 1t 1s necessary to 4 40 open both thefloorlevel door and the car door manually against the strong resistance switch is in mid position on the arrival of ---a car at the floor level. The fixed contact 364 is connected by a conductor h? with a fi xed 'contact 36 (Fig. 2) adjacent the This contact is adapted to be connected to a fixed contact 36%? bya switch 136%? normally held open by a spring 36:. The switch has an arm 36$ projecting beneath the lower end of the master magnet plunger 305, the latter being adapted to engage and close said switch 36% when-said plunger is in its lowest positlon.

65. .The fixed conta t 36iis connected by a ,ing solenoid 41, thereb It also completes. the

in the car, thereby simplifying the construcconductor 71* with a coil for the pilot mag net 271, said coil being connected by a conductor k with the negative line.

When the floor push button is pressed this will complete the circuit just described to the pilot solenoid; 271. The switch 364 is opened by. its spring 36-1 when the caris running sincethen the-master magnet 303 is energized and its plunger 305 is drawn up i out of engagement with said switch, butt; when the car is standing at a floor level the master magnet .isdeenergized and its plun ger is down in aposition to hold said switch closed. The energization' of the pilot solbnoidv completes the circuit to the -door'openopening the door.. circuit to the timer solenoid 107 which will serve to break the circuit to'close the door after'the predetermined time interval has elapsed as de- '85 scribed.

The-movable contact referred to at the selector isengaged the selector switch 239 whenever the car comes .to a rest atafloor:

level and also momentarily closessaid switch in the transit of the car past the floor level, but while the car is traveling the ,hold. up magnet 303 is ener edand itsjplunger is: drawn up away froi n %ieswitch 364, there' by permitting the spri g 364 for the latter to hold. the switch open." This will inter-' rupt thecurcuit and prevent the completion thereof by the pressingof' a floor'button atall times excepting when a car'is atrest at a floor level. It therefore will be impossible -10 0 611 a person at a floor levelto press a button thereat and interfere with the car past such level.

It is possible that a passenger after enter ing the car may change hismind and decid e to leave the. car after its jdoor hasautomati the passage of cally closed and before despatching the .car

to another level. Since the push buttons in.

' the car are in the same circuit with the push buttons at the floor level, it will be possible for him to press a push button in the car and thereby complete the circuit to the pilot solenoid through the selector switch 364 when the selector switch 239 is in mid position while the car is at a floor-level. The

'nergization of the pilot magnet. will complete the circuit to the door opening solenoid e1 and open the door in the manner'described Next will be described the circuit for light 2 VI ing the dome light 123 in the car. This circuit comprises a conductor w (Fig. 2) leading from a source of current to a long, fixed contact 365 adapted to be connected to a similar fixed contact 367 by a switch 369 mount 125 cd ona plunger 371 of a solenoid 373. The

fixed contact367 is connected by a conductor is with the dome light 123 in the car. Said light is connectedby a conductor e0 with the negative line.

of the light controlling magnet 373. This coil is connected by a conductor l with the conductor 0 leading to the conductor 1) leading in turn from the brake magnet 19.

n Thus when the brake magnet is energized to release the brake on the starting ofthe car, the light controlling switch 373 will be energized and complete the circuit to and light the light in the car The brake magnet is denergized on the stopping of the car and therefore the circuit described for the light controlling magnet also will be deenergized on the arrest of the car. This would cause the light to go out. It is desired, however, to maintain the light lighted while and for a time after the car is brought to rest. To'accomplish this a circuit is provided comprising a conductor 11; (Fig. 2) tapped from the conductor 6 referred to leading to the'door timer solenoid 107,'said conductor w being connected to a coil for the light controlling magnet 37 3 said coil being connected by a conductor w with the conductor as referred to in the circuit for the door opening magnet. Thus when the circuits are completed for energizing the door opening solenoid 41 on the. de

energizing of the master magnet 303, the circuit'just described will be completed to the light controlling magnet 373. and continue to hold its switch 369 closed.

- In order that the light may continue light ed during the interval between the opening of the brake circuit and the closing of the door opening circuit, the plunger 371 of the light controller magnet 37 3'may be connected to a piston 37 5 (Fig. 2) in a cylinder 377 having a controlling valve 399- permitting the gradual escape of vair therefrom. Thus onthe opening of the brakecircuit and the consequent deenergi z'ation of the light controlling magnet 37 3, its plunger 371 will be retarded and permitted to move gradually downward. .The contacts 365 and 367 are made sufiiciently long so that the switch 369 will not have an opportunity to leave the same 1 before the door' opening circuit is closed.-. On the occurrence of this event the light controlling magnet 373 will be again energized andpull its plunger upward, the

' light continuing lighted in the meantime.

' The dash pot for thelight controlling solenoid willalsoserv to delaythe extmguishingof the light for. a substantial length of the circuit to the door opening solenoid 41 to initiate the closing of the door. This will prevent the light from going out until after the passenger of the car has had an opportime after the timer magnet 107 has broken 'tunity to pass out of the car through the 'door and the doorhas had an opportunity to close.

To prevent a person from stumbling onentering or leaving the car a threshold light 381 may be provided in the car adjacent the door threshold thereof. The circuit for'this llght ,comprises a conductor 20 (Fig. 1)

leading from the conductor 111 referred to for the light 123 and connected to the light 381.. This light is connected by a conductor to with the fixed,contact 383 adapted to'be connected to a fixed contact 385 by" a switch 387 urged to engage said fixed contacts by a spring 389. To hold the switchi387 open when the door is closed, the door is provided with a cam finger 391 adapted toengage a stem 393 on said switch. When the door is open this camfinger. will move away from said stem and permit said switch to close.

The fixed contact 385 is connected by a'conductor 'w with the conductor w referred to leading from the dome light 123.

It will be apparent from the above that i when the car door is opened the threshold light will be lighted and after the car door is closed the threshold light will be extinguished. I

To automatically arrest the elevator car as it reaches its upper and lower limits of travel, it is provided with the usual cam 395 (Fig. 1) for automatically opening upper and lower switches 397 and..399 in a circuitoic comprising a conductor '0 (Fig. 3) tapped.

from the conductor 0 referred to leading ios from the positive line, said conductorbeing' .connected to the usual slack cable switch 401, said switch being connected by a con ductor o with the lower switch 399 and the upper switch 397, the latter being connected by a conductor a with a circuit breaker 403 (Fig. 3),- the latter being connected by a conductor a with a blow-out magnet 405, the latter being connected by a conductor 0* with the main negative line N.

In electric elevators heretofore used it has been possible for a person tocall the car to a floor levelva'nd then change his mind'andnot open the car door and use the-car. This automatically rendered all of the car despatching buttons ineffective and prevented the call of the car to another floor level. The car'could not be started until one had followed the stairs to the level where the car wasstalled. Then on opening and closing the car door manually the. non-interference switch was? closed and 'the despatch the car.

By my invention th ecar' if not in use/will 189 .buttonsgagain became efiective to operate always respond to the call thereof since ever} time it'aIfliiGs at a floor level the car door will be automatically opened and closed and thereb render the car despatch buttons 7 effective.

lhe automatic opening of the car and fioordoors on the-arrival of the car at a a level and the provision for opening the doors merely by the pressing of a push button ata floor level, serve-as a great convenience to the; usersof the elevator, relieving them of the" work and inconvenience of. manually sliding the doors open, an operation fre quently against .the strong resistance of a. powerful door check which immediately tends to iclose the doors with consequent annoyance and likelihood of jamming or othv erwise injuring the persons-entering or leav -l- .ing the car,

The timer serves .autoinati callytohold thev 'doors open a sufficient length of time to allow the passenger toenter the car,'bu tfdocs not delay, the starting o'f the car if. the-- time'interval thereof is-not required, since ,t;he pressing of the push'button in the car to despatch the s'amejwill'automatically cut;

out the timer on the initial pressure thereon.-

"-Tli e automatic lighting of the domelight inthe car for-the required interval of time furnishes the proper lighting of, the carand -with aneconomyof electricity while the car- 'is notinuse; v The threshold light is a feature which contributes to the'safety of the passengers with" a slight expenditure of electricity since' it. 'is extinguished v at" all times except-ing while thew-door is open.-

The; above and'other features described I contribute to the .-pr oduction ofan electric elevator which can always be-' relid upon d "to operate with ease andisatisfaction under-- all conditions and with complete safety. to

the passengers. lvA-fte rthe car'fhflS been stalrted by the pressing of a push buttonat aifloor it automatically comes to the floor level to which itisj summoned and its .door

automatically opens to receive the passenger, an'dafter he enters "the car and pushes a buttonthedoorautomatically closes and the car travelsto the floor desired and the ydoorautomatically opens to permit {his'exit from the car, all without further attention or operation by the passenger. As soonas the car has made a trip it can alwaysbe relied upon to be; in readiness to make the next trip. It'wi11- be understood that while the in- -vention .has been described more particularly with reference to electric ,ele"ators,

some features thereof areapplicable to other tvoesof. elevators.

Having described one illustrative embodiment of-the invention without limiting the same thereto. what I claim as new and desire to secure byLettersPatent is 11. An elevator comprising, in CombinatlOIlyfi car. controlling elements corresponding to difierent floors. operating means for automatlcally moving sald car to and arrest- .ing the same at any selected floor on manual actuation of the element corresponding to such'fio'or; a door controlling means automatlcallysto open said .door on arrival of the car at-said floor, and mean-s thereafter automatically to close said door without further manualo'peration.

3. An elevator comprising, in combinatlon, acar, a motor therefor, a circuit for net for operating said switch, a controlling circuit for said magnet.v including a floor se lector switch deviceactuated'with said motor and having provision fox-shifting said including a circuit. controlled by said selector,

, automatically to open the door oil arrival of the car a't-said selected floor. 0 I

4- An elevator compris ng, in comb1nation, -a f car, controlling elements corresponding'to different floors operat ng-means for automatically moving said car to and arrestvsaid motor, a-switch in said circuit, a magswitcli' and opening said motor circuit on ara "rival of the car at a selected floor; a door.

and an electrical operating device therefor ing the sameat any-selected-fioor on a ctua- -.tion of-the elementcorre'spondingto such floor;- af'd oor, meanscooperating with said operating means automatically to open said oor; means to hold sa'ld'doorppen for a predetermined time mterval, and means automatically to close said door on the expira- .tion' of said interval.

' 5'." elevator comprising, in combination', a car, controlling elements corresponding to difie'rent floors, operating means for automaticallymoving said car to and arresting the same at any selected floor on actua tion'of the element corresponding to such fioor,a door for the car, doors for the floors,

car door .with any of said floor doors. and

' means-automatically to unlock said connect-' ed doors on the arrival of the car at a select- .ed.fioor.'.' 6. An elevator comprlslng, in combinat1on,'a car. controlling elements corresponding to different floors. operating means for automatlcallv mov ng said car to and arresting the same at any selected floor on actuation of the element corresponding to such floor, a door for the car, doors for the floors.-

meansto lock the car door, means to lock lot means to lock the car door, means to lock the floor do0rs,means cooperating with said op-" eratlng means automatically to connect said the .floor doors, means automaticallyto un-' lock said doors on the arrival of the car ata floor,, means cooperating with said operating means automatically .to open said doors on the arrival of the cars at said floor, and means automatically to close and relock said doors. i

7. An elevator comprising, in combination,--a car, controlling elements correspond- .ing to different floors, operating means for automatically moving said car to and arresting the same at any selected floor on actuation of the element corresponding to such floor, a door, and means cooperating with sa1d operating means automatically to funlock, open, and close said door on the ar-' rival of the car atsaid floor. 8. An elevator comprising, in combination, a car, controlling elements corresponding to different floors, operating means for automatically moving said car to and arresting the same at any selected floor on manual actuation of the element corresponding to such floor, a. door, and controlling means for the latter cooperating with said operating means including an electric circuit, a switch in said circuit, a timer solenoid to operate said switch, and means to prevent said solenoid from actuating said switch until the expiration of a predetermined time interval following the opening of sald door.

9. An elevator comprising, in combi'na tion, a car, switches corresponding to different floors, operating means for automatically moving said car to and arresting the same at a selected floor on actuation of the switch corresponding tos'uch floor, a door, mea/ns cooperating with said operating means automatically to open said door on arrival of the car at said floor, and means controlled from the car'for arrestingthe latter between floors withoutppening said door.

10. .An elevator comprising, in combina 1 tion, a car, controlling elements correspondand arresting the same at any selected floor on actuation of an element correspondlng to such floor and including an electric circuit complete only when the door is closed, means {controlled by' the car operating means for automatically opening the door after the car has stopped at the selected floor and means for 'reclosing the doorto render efi'e,ct1ve again said cortrolling elements.

12. An elevator comprising, in combination, a car, a door, controlling elements corresponding to different floors, operating Y means for automatically moving said car to and. arresting the same at any selected floor on actuation of an element corresponding to such floor and including an electric circuit complete only when the door is closed, means controlled by the car operating means for automatically opening the door after the car has stopped at the selected floor and holding the same open and means including. a pushbutton to cut out said holding means andpermit reclosing of the doorto render efli'ective again said controlling elements.

13. An elevator comprising, in combination, a car, electrlc operating means therefor lncluding switches corresponding to different floors selectively operable to despatch the car to any floor, electric circuits for said operating means automatically to open the latteron the arrival of the car at a floor,

' and means to prevent'control of the car from a floor while said car is in transit, v

14:. An elevator comprlsmg, in combinaswitches; a door, means'controlled by said tion, a car, controlling elements corresponding to difi'eren't floors, operating means for automatlcally moving said car to and arresting thesame at any selected floor on' actuation of the element corresponding to such floor; adoor, means cooperating with said operating means. automatically to open and hold open said door for a predetermined time interval, and means for despatching the 'car without waiting for expiration of said interval.

15.' An elevator comprising, in combination, a car, a door, operating means to despatch said'car to any desired floor including a circuit and a switch'in said circuit con-. trolled byv said door; means coiiperating with said operating means automatically to open said door and break said circuit on arrival of the car at the selected floor, and means without further manual operation. j

16. An elevator comprlsing, 1n comblnation, a car, a door, operating means to des- I patch said car to difl'erent floors, electric controlling means'for said operatmg means including a circuit having car'despatching switches corresponding to said difierent floors and a door controlled switch, means cooperating with said, operating means automatically to open said door and its switch on arrival of the car at a selected floor and prevent despatch of the car to another floor,

and meansv automatically to close said'door .and its switch to allow despatch-of the car .110 automatically to close said door and circuit to another floor without further manual operation.

.17. An elevator comprising, in combination, a car, a door, electric controlling means, a'set of car despatchmg switches on the car compondingto-difl'erent floors, switches at said'floors, operating means to transmit said car to and arrest the'sameat a selected floor on actuation of either a car or afloor switch "correspondlng't'o sald floor, and means cooperating with 'sald' operatlng means auto- "i ffi i allv tO'open and close said door on arrival of the car at the selected floor. 4 1 18; elevator comprising, in combinaopening and closi' "remains at said floor.

ear to aselected cana'door, electric controlling means, cardespatchmg switches corresponding to dlfie'rent floors, op,erat1ng means to transmit to a selected floor on actuation of.

corresponding thereto, means anto'tnatically. to open and close said door on arr val of the carat the selected floor, and

open said door after the automatic gf thereof while the car 1";19. "An-elevator comprising, in combina t1on, ta car,-a door, controlling means lIl'. Qclulhngan electric circuit, car despat'ching switcheson the car corresponding to different floors, operatin means to transmit said oor on actuation of the corresponding thereto, means auton atioally to-open and close said dooron arrival of- -the car at the'sele'cted floor, and

' meanst oopen said door operahlefrom said car after the automatic opening and closing ithereof- Whilelthe car remains at said floor.

td 'mit sal' car to a selected floor onactuation of the switch corresponding thereto, means 7 20; elevator comprising, in combination, a car, a door, car despatching switches nt floors,'operating means to transautomatically-to o'pena'nd close said door on arrival of the car at the selected floor,

and meansonerable from .the' floor to'open said door after the automatic opening and vclosing thereof while the car remains at said floon 21; eldvator comprising, in combinaa cam-means. for causing the samefto "travel 'in its well, a door, electrically driven "means tozeifect automatic opening and shut- ,tingofvthe door when the car has arrived travellinits well, a door, electrically driven *at,',a jfloo17- level, and an, electric governing rmeans. thereforlo effect the closing movea -determined interval after the Y 'opeei' ime Y Anclevator c mprising, in combination, a'car,,means for causing the same to means'to'efiect automatic opening and-shutting of. the door when the car has arrived at m-sfloor level, and an electric governing .ineanscontrolling the supply of current thereto .to efiect closing'movement at a determinedinterval after the-opening move- 23. An elevator comprising, in combinationg-a car, means for causing the same to travel-in its #3 1 o r and: electrical. means for automatically opening the door. whenthe car has completed a predetermined journey,

holding the same open a predetermined time interval, and then automatically closing the same. 1

24. An elevator comprising, in combination, a car, means for causing the same to travel in its Well, a door, and electrical op- .erating means effective automatically'to open I the door when the car has arrived at a se- .lected fioo'r level and to hold the door open a predetermined time interval, there being provision for varying the duration of said interval. I

25. A'n'elevator comprising in combination,'a car having a door, afloor level door, a latch on one of said doors, a channel on the other for receiving said latch and means for automatically moving said latch into said channel on the arrival of the car at a floor level. v V

26. An elevator comprising in combination, a car having a door, a floor level door,

a latch on one of said doors, a channel on the other for receiving said latch, means for automatically moving said latch into said channel on the arrival of the car at a floor level, a controller for initiating movement of the car, and means to disengage sa d latch and channel on actuation of said controller.-

29. An elevatorcomprising in combination, a car, a door, a brake for arresting the car, eledtromagneti'cfmeans for releasing the brake including a circuit and electromagnetic means for automatically opening the car door on the breaking of the circuit for said. electromagnetic brake releasing means.

30. An elevator comprising in combination, a car, a door, and means for autematically opening said door includlng a circuit, a switch in said circuit, a pilot magnet for controlling said switch. a circuit for sa d pilot magnet. a switch in the latter clrcuit and an electromagnetic means for controlling said switch. 7

31. An elevator comprising in combination. a car. a door and means for automat cally opening said door including a clrcuit,

v a switch in said circuit, a pilot magnet'for 100 tion, a carhaving a door, a floor level door, 1

controlling saidswitch, a circuit .for said pilot magnet, a switch in the latter circuit and means susceptible of adjustment" prior to movement ofthe car for automatically;

closing the latter switch'on the arrival of the car at a selected floor level to energize said pilot magnet and complete the circuit for openingsaid door. 7

32. An elevator comprising in combination, a car, a door and means for automatically opening said door including a circuit,-

automatically closing said pilot magnet cir- I cuit on denergization of saidelectromag' net'ic'ibrake-to arrest the car. v

34;. An elevator comprislng 1n combinatlon, a car, a door and means for controlling said doonincluding an operating device.

for opening-- andclosing the same," an electric circuitfor said device and means for automaticallyopening andclosing said circuit to-causesaid device to open the door onthearivalof the-car at a floor. level and to cause said device to close the dooron the expiration.ot apredetermined time interval.

A-n elevator: comprising in combina-: tion, acar, a door and means for opening and closing. said-J door including an electromagneticdevice, a timing device, a circuit for said devices, and means governed by said timing device for opening and closing said circuit to cause said device to openthedoor on the arrival-oiithecar at'afloor level and ta cause said deviceto close. the door on the expiration-of a predetermined time interval.

An elevator comprising in combina-"- tion, a car, a door and means for controlling door including a door opening magnet,

a timinglmagnet, acircuit for said magnets,

aswit'ch insaid circuit, means for automatically closing said switch to render said door openingv magneteffective toopen the door and: a switch 'in said circuit controlled by said timing, magnet for opening said circuit ta permit the closing: ofthedoor.

3.7 An. elevator comprislng 1n combination, a can-a door and means for controlling saidzdoortinclllding adoor opening devlce, a timing device and electrical means for controlling said; devices including a circuit therefor, a. switch in said circuit, means for automatically closing said switch to render said-door opening device efiective to open the door on the arrival of the car at a floor level and 'aswitch in saidcircuit controlled by said timing device for governing the cir-Q cuit to permit closing of said door.

38. An elevator comprising in combination, a car, a door and means for controlling said door including door opening means,

door closing means energized bythe opening of the door, timing means and electrical means for controlling said door opening- 'meansin'cluding a circuit, a switch vin said circuit, means for automatically closing saidswitch onthe arrival of the car at a floor level to render said door opening means efiective to open the door and a switch in said circuit controlled by said timing means for rendering said door closing means efi'ec- Y 'tive to close the door;

39. A11 elevator comprising in combina-.

tion, a car, a door and means for controlling said door including door opening means, electrical means for'controlling said door opening means including a circuit, a switch in said circuit, a magnet for actuating said switch, a circuit for said magnet, means for automatically momentarily closing said magnet circuit on the arrival of the car at a floor level and means operable on the closing of said magnet switch for continuing the energization of said ma et.

- v4:0. An elevator comprising in combination, a car, a 'door, electrically controlled closing means therefor, a t1m1ng magnet, a circuit for controlling said door closing a means, a switch saidcircuit and means actuated by. said t1m1ng magnet for moving said switch after a predetermined time interval to render said door closing means effective to close the door.

41. An elevator comprising in combination, a car, a door, and closing meansfor said door, an electric circuit controlling the same, a switch in saidcircuit and a timin ,device' for automatically 7, actuating sai switch on the expiration'of a predetermined time interval to render said door closingmeans effective to close-the door.

tion, a car,.a door, closing means for said door, a circuit electrically controlling said closing means and timing means for automatlcally controlling sald clrcult lncludmg a solenold havlng-a plunger and means for 42. An elevator comprising in combina retarding the movement of, said plunger on a the energization of said solenoid to postpone the closingof the door until after the expiration of a predetermined time interval,

43. An elevator comprising in combination, a car, a door, and controlling means for said door including a solenoid having a plunger connected to said door, 'a timmg solenoid having a plunger, a circuit for said solenoids, means to complete said circuit to open the .door automatically on the arrival of the-car at a floor level. door closing means energized on the opening of the door, a

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