US1899368A - Elevator door control - Google Patents

Description

Feb. 28, 1933. TORCH 1,899,368

ELEVATOR DOOR CONTROL 7 Filed Feb. 17, 1930 I 4 Sheets-Sheet l FlIIIIIIIII'IIIIIIIIIIIIIIIIIIIIIIIIIllIIIIIIIII'll,lll'llIIIIIIIIIII'III' Fig.1.

.766 7 42 7 73 a I I 2 1 127 INVENTOR L0 1Z6 T0 072 BY Q ' ATTORNEY Feb. 28, 1933'.

L. T ORCH ELEVATOR DOOR CONTROL Filed Feb. 17, 1930 4 Sheets-Sheet '2 Feb.. 28, 1933. L. TORCH 1,8995368 ELEVATOR DOOR CONTROL Filed Feb. 17, 1930 4 Sheets-Sheet 4 'fnz/ehi of Lows Tar-ch I d fi 7 Patented eFeb;;2s,5-1e33 .v I 7 1,899,368? f" v -I Jouisroiicir; 1013 BHI'GAGOJLH i LEVA OR 30103 comets lispimati aaiea February 17, 1939." Serial No. 42am;

I inventionrelates to elevatordoors and a more particularly to", operator controls therefor although certain features thereof may be employed purposes. 1 i p I It contemplatesmoreespeciallyjthe.provision of novel means for controlling the elevation and descent of elevator doorsat floor landings WltllOlltj resort to intricate electrical circuits 'and oPerators'.-

Elevator door operators of have not provenentirely satisfactory irfv that they are intricate :in construction"; expensive and. not entirely dependablein operation. Moreover, theirgcontroljof doormovement is not such as to prevent slamming andffor that reason soon impaii the 'doors as ;well as the operation thereof. I

' Slamming is especiallyprevalent 3 T duty industri a1; elevator" doors andiinore particularly with-double or meekeri doors The power operators therefor ordinarily function independently of the elevator power source 1 of locomotion, JaIld'ikfQI that reason create" a comparatively largeioperatmgtost aside from the maintenance thereof in I effecting the elevation and {descent offtherdoors forfclosing and opening the elevator shaft for egress aindingress as the-'occasion may "39 require. This is entirely obviated =;..with-cthe instant 5 invention in: that; the elevator furnishes the motivating power for opening and closing the doors within fullcontrollto-pre vent slamming or other. destructive impacts.

Oneobject of the. present; invention is to simplify the construction and improve the operation of 'ti'oned.

' 'Another' object the; provision-of riovel 749 means for controlling the" opening and closing of elevator-doors responsiveto the a proach orreceding 'inove'merit, respectively. of the elevator w'i'th'respect toflOorlandingS.

Still another I object is Jthe. provision of means in conjunction with-adelevatorcar for 1 automatically elevating; I and releasing; the

doors responsive to i a predetermined move-f ment' and positionsthereofr ,1

t 'A- further? object is toproyide haven coop- 9, erating means for attachmentlto' arr elevator with equal advantage for other the elevator car. 1 a

' cannning bracket 1 -An additional novel means in con-junction with n elevator i Inthe drawings tion taken from the interior of the a shaft? of -the doorsiin their open position." devices of ChaIacterImen-' for operation and controlii'n accordance-with the teachings of: the instantinvention." l

canand shaft doors toeflect theopenirig closing thereofresponsive to'predetermind: movement of the elevator Icar, thereby controlling theascent and descent thereof,

A still .furtherobjectris the provision of 'fib meansifor normallylocking an elevator door its closed position for release prior to door i displacement responsive'to the movement 10f Still "further object is' the provision of novellatch and camming bracket inthepath thereof for cooperation with a trip" to effect the'displacement of thelatch' wfor a predeter mined distance entirely controlled b yjthe thereof:v a I 1 object is the provision-of car to effect 'openingof shaft doorsandcontrol the closing thereof without slamming D 1 7 it .or other destructive impacts."

i Otherobjectsand advantages will ap ear 'from'ithe following description of an i lustratedv embodiment of the presentinvention; I

Figure 1 is a sectional view inelevation of an elevator-car viewed from the elevator sha'ftim c Figure 2 is "a fragmentary View taken substantially along line "IIII"of-Figure 'Flgure 3 is a fragmentary sectional view in elevation taken substantially along} line II'I-III, ofiFigure' 1'. v

F igure his a fragmentary view ineleva- Fi iure 5 is a similar view ofsa gate momit ed in conjunction with'an elevator doorway- T9. Figure 6 is a sectional viewitaken substanf- Figure 73 is is sectional view takenisub stantially alongline VII t VI-I'mf ;-Figure4'.

Figure -8 is a plan View of the trip which ismounted for attachment to the elevator car for traverse therewithfin a manner shown in: the 'preceding'figuresfi w,

- Figure -9f is a sectional View :takeif'substantially along line of-Figuref 8 which efi'ects therelease as;

Figure is a sectional view taken substantially along line XX of Figure 1 when the doors are in their open or dotted line position and Figure 4 when viewed in connecv tion with the opposite side bracket.

Figure 11is a sectional. V1GW taken, sub- 7 stantially along line XI-XI of Figure 1 when the doorsare in their open or dotted line p osition and Figure 4 when viewed in connection with the opposite side bracket;

Figure 12'is a front view in elevation of the {latch and camming bracket disclosedin Figure 10, parts thereof being broken away to clarify the showing.- A V Figure 13 is a front view in elevation of the latch and camming bracket disclosed in Figure 11 parts thereof beingbroken away to clarify the showing. I 1 a Figure 14 is a front viewin elevation of the latch and camming bracket shown in cooperation with the trip "whichengages the may close. a

latchfor vertical movement upwardly to initially contact with thecamming bracket. V

Figure 15 is a similar view of the latch, camming. bracket and trip in a. further elevated position coincident with the pivotal displacement of the trip by the camming surface for an extent almost sufficient to loose or'release the latch. i

Figure 16 is 'a similar view of the latch, camming bracket and trip with the latter elevated to .an extent for camming along the bracket beyond the latch to a position permitting release of the latter sothatthe doors The structure selected for illustration is shown in association with a building wall 10 having'a substantially rectangular opening 11 provided'therein to define a doorway or opening 12 to an elevator shaft 13Iwhere passage over the floor 14 is necessary for ingress -or egress from an elevator 15 which is .slidably mounted for Vertical movement within the shaft 13. i In orderto effect theclosure of the doorway 12 .to' preclude any passage therethrough as well as decrease the fire hazard to a minimum, a door 16 is mounted in confronting bracket guides 17 and '18 fixed to thewall of the shaft 13 on both sides of the op'ening 12 for guiding the movement thereof along a predetermined vertical path.

The closure or door 16 comprises, in this instance,'a top section 19 and bottom section 20 which have beaded-or v otherwise rein forced meeting edges 21 for oppos'edmove- -ment in accordance with meeker type structures ofknown dBSIgIL'.

i The door sections 19 and 20 are-inter-connectedi by means of tension transmitting wires or ropes 22 which travel over peripherally grooved sheaves 23 revolubly mounted in furcated brackets 24 clamped-or otherwise secured to the guides'17 and 18by means of lugs 25 fixed thereto above each opening.

in the. elevator 13. One end of each of the wires 22 is anchored to latches 26 se cured to the top door section 19 proximate to the meeting edge 21 thereof just inside of the door guides 17 and 18; Accordingly, the other extremity of each. of the wires 22 is anchored to a bracket 27 as at 28, the bracket 27 being attached to the lower door section .20 as at 29 proximate to its meeting edge 21 in alignment'with the latch 26. As shown,

the brackets-27am provided with a raised intermediate portion 30 to accommodate the guides 17 and 18 for termination in latches 31 which confront the'elevator shaft 13 in proximate. spacedrelation therewith. The door sections'19 and 20 are balanced so that guiding the"ascent and descent thereof in a predetermined vertical lane of travel.. As

shown, the elevator 15'is of su-ch size and configuration so that the interior thereof will communicate with the doorway 12 when the floor 14' of the structure is in alignment with the floor 32 of the elevator car15. Of course,

the ceiling 33 of the elevator car 15 is spaced fromlthe floor 32' thereof so that it will extend beyond the opening or doorway 11 to permitlfcreeping of the car 15 downwardly responsive to sustaining a load therein or in the opposite direction subsequent to load removal."

In order that the door sections 19 and 20 may be opened or closedfor control by the movement and position of the elevator car 15, the

latter is provided with trips 34 and 35, totaling inthisinstance four, which are securely fastened theretoin any appropriate position to cooperate with the latches 26 and 31. In this instance, the trips 34are. fixed to the side walls of the elevator car 15 for confronting extension therein proximate to the ceiling 33 thereof to cooperate with'thelatches 26 fixed to the'top door-section 19 while'the trips 35 are securedto the exterior side walls of the elevator car 15 for extension within-the elewith the latches 31 fixed to the lower door 'section20. To this end, the trips comprise anangular plate 36having one side 37 thereof apertured to constitute the securing .bracket while the other angular wall 38 serves .to sustaina'central screw 39 which serves as a pivot for a pin 40. having aligned cylindrical extremities 41 and 42.

determined position, coil springs 43, in this instance two, are interposed between aligned lugs 44and 45 fixed to the pin 40 and clip 46, respectively; the latter being secured to the "vator' shaft 13'below the floor 32 to cooperate In order to maintain the pin 40 in a pre f angular face-38iofth'e bracket 36- by; means of fasteners 4'1. In consequence thereof, the-pin 7 40 will. be 'urgediinla clockwise direction (viewed fromnFigure about the pivot 39 for normal disposition in parallelismwith the angularsedge of the bracket '36 owing to projections 48 fixedto the plate 38 on-opposite sidesiof thepivot-89 inthe path of thepin 410, thereby limiting the'clockwise displacement of the pin 40 responsive itoathe nrg'e-iof the springs 43. The trips sendl are mounted so that the -pins v normally extend in parallelism withthe' side walls of the elevator car 15so that the extremities 41 thereof will project beyond the" forward edge 49, thereof in the path of thelatches 26 and 31.57

The latches 26 and 31am shaped to provide wedge extensions; and 51, i respectively,

' which are inclinedin oppositedirections'to present trip engaging flat edges 52-and 53,

respectively. As i shown, the we'dgeexten- 'sions 50 and '51Xare bent from theylatch 4 neath cams 54 which terminate in parallel manner disclosed in'Figures 10and,11-.} 5 a brackets 26 and 31 ,jrespectively,;or spaced parallelism therewith for; movement withthe door sections 19 and 20 inthepath ofandbe spaced attaching brackets. Iaperturedxto reflceive fasteners 56 therethrough remat h ment to the elevator shaft 13' inthe' path-of the latches 26 and 31 The cams 5 1 are provided with converging edges 57 which are'p'ositioned in the 'path'of the trip pin extensions 41} so'that the lattermay effect the engagement thereof together with thejlatches '26 and 3lfwhich slidably move-therebetween in a ing the normalalignmiiht. off-the pins .40 just Q prior to engaging the caminingedges- 57"1na' manner disclosed more fully in Figuresl iv to 16 inclusive, since the pin 41 carried "by the elevator car 15 will abut;againstthefengag ing'latchedges 52 andx53 to'elfect the separa-.

tion of the door sectionsl19and 20 responsive to the approach :of the elevator car from either direction to the doorway 12 for aligned communication therewith at which position the door 16 is completely openedto permit ingress and egress through the doorway 12.

In thisconnection'it is of utmost importance to appreciatethat'thetrip pin 41 engages the latch edges 52 responsive to the ascent offthe elevator cariinits approach to the doorway 12, thereby-elevatingthe door section 19 and efitecting the corresponding descent ofthe door s'ection20i-owing to the tie rope connection: 22 ithiefb'etween. The

V ascentofthe elevator together withthe: opening or-separationl of theidoor" sections 19a-nd 20rcontinuesuntil'suzcha time asthe trip pins 41 engage the camming-3edge57 ofthebrack ets 54% (see Figure 15) at whichtime the pins 41-01: the trips 34 arepivoted to approach e each other for an extent suflicient to release or becomerdisengaged :from the latches 26 :VVhenthis occurs, the; door sections 19 and '20 gravitate towardaeach otherfor closing the doorway 12 however, the closing speed of the door'sections 19 and 20: is within the r receding movement of the elevator car 15* in that' the'continued upward movement "thereof will cause the pins 41 of the trips135 to become engaged by the latch edges 53 of the 7 lower door section 20.

In consequence thereoflthe door 'secti0ns19 I and 20 cannot approach each other at a speed i in excess of theinitial' acceleration of the elevator as it recedes from the doorway 12.

This is effected regardless of the directional receding, movement of the v elevator car 7 15 in thattone or the oth'erof the latch edges 52or' 53 01:- the: door sections 19 and 20, respective ly, will engage tlie pins il.tocontrolthe closv ingr'novement thereof to an extent preventf ing slamming or other; destructive impacts which occur w1th remeeker or other doors of known construction anddesign.

either direction'will open the'door 16 responsive to the elevators approach to the I doorway 12-, for thetripsi34 situated proximate tothe top'of the elevator car, in thisinstance 7 e5 *WithYthe arrangement ofpartsthus fa r described-it will be apparent th at the movement oftheelevator car"15 within the shaft13 in interiorly thereof, willengage the latches 26- while the trips 35, in this instance .two, fixed exteriorly of the elevatorcar 15 totheside walls thereof belowthe floor 32 will, engage the latches 31', thereby'efiecting the operation and control of the door sections 19 and 20 regardless of the directional movement, there'- of. Similarly, the closing or approach of the door sections-19 and 20-will be control ed by the pins '41 on either. of the'trips 34:01- 35 depending upon the receding direction of the elevator car 15 with respect tothe doorway 12.,

During the receding ascent, of the elevator car 15 1the lower trips 35 ar'e'eflfective in controlling the closing speed of the doorrsections 19 and 20 owing tothe engagement of the latch edge 53 with the pins 41 thereof.

Similarly with the receding descent of :the I elevatorcar 15 fromthedoorway 12, the pins 41- mounted on the trip 34 control the speed with which the sections19 and 20 close ow ingto the engagement ofthe meeting edge 21 thereof with thepins 41. It is obvious that the latches 26 and 31 as well as the cams 54'm'ay be varied inpositionjwithrespect to jeachfother withina wide range depending upon elevator car and shaft construction; size and variation 'to meet the requirements of any particular installation, and consequently the positions of thetrips 34 and 35 will correspondingly vary or be changed to time the opening of the door sections 19 and 20 as well as to effect the release thereof at a predetermined receding position of theelevator car 15 from the doorway 12 in either direction.

It" is apparent, therefore, that a novel means has been provided to operate a closure 16 for an elevator shaft doorway 12 w thout resort to any, 1ntr1cate electrical circu1ts,ap-

Jaratus or power consuming operators.

oreover, mechanical means of this character not only serve to open the doors with precision, but also retard the closing thereof .to

an extent sufficient to preclude destructive slamming and impact which impairs the operation of doors of known construction withi in avery short time. Now then, the elevator car 15 moves for alignment with any selective landing 14 of a building structure,and at that time the trip pins 41 are still n en-u gagement with the latches .26 or 31 depending upon the. directional approach of the elevator car so that the meeting edges 21 and r 21 of the door- sections 19 and 20. will be-s'eparated for an extent suflicient-to assume a position above and below the horizontal edges of the rectangular openingor doorway 12 (see dotted line position thereof- F1gure 3), thereby permitting the elevator car 15 to creep underload, a common occurrence with known elevator structures. 1 r

It is apparentfroin the above description that the trip pins 41 are normally urged by the springs 43 for alignment with the latches 26 and 31. -l or that reason,the ascent'or ,descen't of'the elevator car 15 past a doorway l2 would'open and close the closure 16 or the sections 1.9 and 20 thereof even though it was not the desire or necessity of. the elevator operator to stop at each landing. -To avoid this unnecessary operation of the doors 16,

means are provided to normally displace'the trip pins41 out of the path of the latches 26 and 31 so as to be elfectless in operating the doors 16 unless the elevator is brought to a landing at a floor 14 of the building structure. Y I

To this end, a hand lever 56 is pivoted as at 57 to any portion of the elevator car 15 within convenient range of the attendant.

A quadrant 58 is fixedly mounted to the piv otal axis 57 of the lever 56 so to present a circular series of ratchet teeth 59 in the path of a pawl 60 operated by thumb lever 61 pivoted to the hand lever 56 as at 653.- .ln consequence thereof, the lever 56 may be maintained in any adjusted position within the limits of the quadrant -58,- Beds 63 and v64arejpivoted to each other and the hand axis 57 asuflicient distance to afford the desired displacement of the aligned rods 63 and 64 which, in this instance, are guided by brackets 66 secured tothe wall of the elevator car 15 for extension through the floor 32 and ceiling 33 thereof.

Bell cranks 67 are pivoted as at 68 so that the short arms 69 thereof extend for connection to each end 70 of the rods 63 and 64. The longer-arms 71 of the bell crank levers 67 are pivoted for connection to a link 72 which has a terminal end thereof operatively connected tolevers .73 pivoted as at 7 4to the elevator car 15 beyond the floor 32 and ceiling 33 thereof. As shown, the lovers 73 have the arms thereof provided with elongated slots 75 and 7 6 which cooperate with pins 77 and 78,-Vrespectively, mounted for slidable movementtherein. The pin ,7, 7 is carried by a rod 79 mounted for horizontal movement in aligned: guide brackets '80 and 81 so that an offset parallel extension 82 thereof will move proximate to one of the trips 34;

To this end, the offset extension 82 is guidedin a bracket 83 so as to carry a transversely disposed lu-g84 which extends in the path of the trip pin extension 42 (see Figures 1 and 2), Similarly, thepin 7 8 is carried in a rod 85 guided in brackets 86so that an olfset rod extension 87 will reciprocate in the path proximate to the other trip 34 on the opposite side of the elevator carr l5. As shown, the oil'setextension 87 carries a' transverse lug 88 near the extremity thereof to extend in the path of the trip pin extension 42 of the re spective trip 34, thereby displacing the pin extensions 41 of the trips 34 to approach each other responsive to the counterclockwise movement oflthe handlecontrol lever 56- In consequence thereof, the trips 34 will be ineffective to operate doors 16 or 19 and 20 thereof. I I

The. trips 35 have the pin extensions 41 thereof similarly displaced owing to correspondinglever and link instrumentalit'ies, it being noted that the lugs 84 and 88 are normally vurged by coil springs 89 to assume theirfextreme retracted position so as to be inoperative for displacing the trip pins 41. To this end, the coil springs 89 envelop guide rods 90 fastened to brackets 91 so as to northe sections inally urge the lever 7 3 in a clockwise direction (viewed from Figure 1) Moreover, coil springs 92 envelop therods 63 and 64 for abutment against washers 93 which serve as a fixed support therefor. Pins 94 extend through the rods 63 and 64 so as to serve as a stop for the springs 92 which. impart an urge thereto to assist the coil springs 89 in maintaining the lugs 84 and 88 out of engagementwith the trip pin extensions 42. F or that reason, it is necessary for the attendant to displace the hand control lever 56 againstthe urge of springs 89 and 92 in order ment of said elevator car relative to said shaft door. in either. direction, said means being effective to control the opening'and closing of said door withinthe-acceleration of saidelevator car. I f

In -an elevator structure, thelcombination with an elevator shaft, of ahorizontally divided movable shaft door composedof a top and bottom section, means for connecting said door sections together for opposed-sliding movement to effect the opening andficlos ing of said {shaft door, an elevator car in said shaft, and cooperating means rigidly fixed to said elevator'car and shaft door inrrigidtion with an elevator shaft, of a -movable' shaftfdoor,an elevator car in said shaft, and

cooperating means on said elevatorcar. and

shaft door to operate said door responsive to the approaching and receding movement in either direction. of said elevator car with respect to. said sh'aftdoonsaid cooperating means'beingeifective to control the descentof said doorcwithin the receding speed of said elevator car.

i 5. In an elevator structure, thecombina-i tion with an elevator shaft, ofa movable shaft door, an elevator car insaidshaft, co-i operating means on said elevator car and shaft door to operate said door responsive; to the approaching and receding movement in either direction of said elevator car with respect to said shaft door, and meansfor rendering said cooperating means ineffective for operating said shaft door. f r

6; In an elevator structure, the combination with an elevator shaft, of ahorizontally divided movable shaft door composed" of I a i top and bottom section, means'for connecting said door sections together for opposed slid ing movement to effect the opening and clos ing of said shaftdooiyan elevator car in said shaft, and cooperating means on said; ele vator car and shaft door to operate said door sections responsive to the approaching and recedmg movement in either directlon of said elevator car with respect to said shaft-door.

7 In an elevator str.ucture,the combination'with an elevator shaft, of a horizontally divided movable shaft door'composed of a top and bottom section, means for connecting said door'sections together for opposed 5 sliding movement to effect theopening and closing of said shaft, door, an elevator car in said shaft, and cooperating means on said elevator ,car and shaft door to operatesaid door sections responsive to the approaching and recedingmovement in either direction of said elevator car with respect to said shaft door, said cooperating means serving to control the closing of said doorsections within the receding speed of-said elevator car.

8. In anelevator structure, the combination with an elevator shaft, of a horizontally divided movable shaft door composed of a top and bottom section, means for connecting said door sections together for opposed sliding movement to effect the opening and closingof said shaft door, an elevator car in said shaft, and cooperating meanson said elevator car and shaft door to operate said door.sections responsive to the approaching and receding movement in'either direction of said elevator car with respect tosaid shaft door, saidcooperating means serving to control the closing ofsaid door sections within the receding speed of said elevator car, and

meansfor displacing said cooperating means relative to each other for enabling'the ele-,

vator to pass said shaft door without the op eration thereof.

9. In an elevator structure, the combina-' tion with an elevator shaft, of a horizontally divided movable shaft door composed of a top and bottomsection,means for connecting said door sectionstogcther for opposed slid ng movement to effect the opening and closing of said shaft door, an elevator car in said shaft, and cooperating means on said 'ele' vator car'and shaft door to operate said door section's responsive to the approaching and receding'movement in either direction of said elevator ca'r withfrespect to saidshaft door, said cooperating means serving to control the closing of said door sections within the receding speed of'saidelevator car, said coopcrating means'being positioned for displacement ofthe bottom door section below the elevator car to permit creeping thereof.

10. In anelevator structure, the combination with an elevator shaft, of a horizontal- 1y divided movable shaft door composed of a top and bottom section, means for connecting said door sections together for opposed sliding movement to effect the opening and closing of said shaft door, an elevator car in said shaft, cooperating means on said elevator car and shaft door to operate said door sections responsive to the approaching and receding movement in either direction of said elevator carwitlr respect tosaid shaft door, means for normally locking said doc-r sections in their closed position, and means on said elevator-car for releasing said locking means prior to'theengagement of said cooperating means in opening said door sectionsr K 11; In an elevator structure, the combina- 'in opening said door. V a

12. In an elevator structure, the combinatlon with an elevator shaft, of a movable tion with an elevator shaft, of'alqmo-vable shaft door, an elevator; carjin said shaft, co-

operating means on said] elevator car and shaft doorto operate sa d doorresponslve to the approaching and receding movement in either direction o-f 'said elevator car with respect to said shaft door, means fornormally locking said'shaft door againstmovei'nent from the exterior, and means on said elevator car for releasing said lockmg means prior to the engagement 'OfSZLld. cooperating means shaft door, an elevator car in'saidshafhcooperating means on sa d elevatorcar and shaft doorto operate said door responsive to the approaching and receding movementin either direction of said elevatorcar with respect to said shaft,-means for normally looking said shaft door against movement from the exterior, means'on said elevator car for releasing said locking means prior tothe engagementof said cooperatingmeans in opening said door, and means fordisplacing said cooperating means relative to each other for enabling the elevator to pass said shaft door without the operation thereof. a

13. In an elevator structure, the, combination with an elevator shaft, of a movable shaft door, an elevator car in said'shaft, and

cooperating means on said elevator car and shaft door to operate said door responsive to theapproach of said elevator car to said shaft door in either direction,.said cooperat mgmeans comprising a lever pivoted to said elevator car, a pivotal lever stop on said shaft door, and a lever camming surface on said elevator shaft in thepath of said levergand stop to control the cooperation therebetween,

14., In an elevator structure, the combination with an elevator shaft, of a movable shaft door, an elevatorcar in said shaft, and cooperating means on said elevator car and shaft door to operate 1 said door responsive to the approach of said elevator car tosaid ver pivoted to said elevator car,.a pivotal lever stop on said shaft door, and a lever camming surface'on said elevator shaftin the path of said lever and stop to control the coe 1 operation therebetweenp v shaft door ineither direction, said cooperat-. ingmeans comprising a spring impelled le-- door, said cooperatingmeans serving-tolcontrol the 'closingiof said door sections within thereceding speed of said elevator car, means i for displacing said cooperatingmeans relative toieach' other-"for enabling theelevator to passsaid shaft door without the operation 7 7 thereof, saidCooperatmgmeans comprising; agleverpwoted to 'saidielevator car,-aylever stop; on said shaftdoor, and a lever camming surface on said i elevator shaft in the path a of said lever and stop to control the cooperation therebetween; 1 I

16. In an;elevator-structure, the combination-with an elevatorshaft, of a horizontally divided movable "shaft door 1 composed of va a top and bottom: section, means for connectsing, said door sections together for opposed s-lidingqmovenient to effect the openingaand closing of said shaft "door, anelevatorcar i elevator'car and shaft door toZ PeratG said door sections responsive to the approaching. 1 and receding movement in either direction of said elevator car with respect to'said shaft door, said cooperating meansserving to control the closing of said door sectionswithin p the receding speedofsaid elevator'car, means in said shaft, and cooperating meanswon said for displacing said cooperating means relative to each other for enabling the elevator to pass saidshaft door Without the operation thereof, said cooperating means comprising a lever pivoted' to said elevator car, alever. stop on said shaft door, and a lever camming ,a surface on said elevator shaftin the path of i said lever and stop to control the cooperation thereloetween, there being'cooperating means positioned inthe corner regions of said door i sections and elevator car.

17. In anelevator structure the combina tion with an elevator shaft, of a movable V shaft door, an elevatorcar in said shaft, and:

cooperating means, on said elevator car and shaft door to operate said door responsive to I I the approach of said elevator car to said shaft door in either direction, said cooperating;

means comprising a lever pivotedto said elevator car, a lever stop on said shaft door, there being levers pivoted to said elevator car in the corner regions thereof, and stop means in the corner regions of said door to cooperate with said levers," and camming are brackets fixed to the said elevator shaft in the :path of said levers.

18. In an elevator structure, the combination with anelevatorshaft, ofya movable shaft door, an elevator car in said shaft, and

cooperating means on said'elevator car and shaft door to operate said door responsive to.

the approach of said elevator car to said shaft door in either direction,} said cooperating means comprising a lever plvoted to said elevator car, a lever stop on said shaft door,

and a levercannningsurface on said elevator shaft in the 'path of said lever and stopto control the cooperation therebetween,

therev being levers pivoted to said elevator :car in the corner regions thereof, and stop means in the corner regions of said door to cooperate w1th said levers, and means for normally locking said door against movement,

and means in advance of said levels for re; leasing sa1d locking means. 7 V

19. In an elevator structure, the combina- I tion with an elevator shaft, of a doorway in said shaft, a movable shaft door mounted in said shaft to close said doorway, an elevator car 1n sa1d shaft, cooperating means on said elevator car and shaft door to operate said 1 door responsive tothe approach of said elevator car to'said shaft door in either direc-' tion, said cooperating means serving to maintain said doorvin open position with respect to said doorway while said elevator car is in allgned communlcatlon wlth sa1d doorway or. wlthin creeplng range thereof.

In witness whereof, I subscribe my name.

: LOUIS TORCH.

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