US1257109A - Controlling means for elevator-doors. - Google Patents

Description

I. W. PEELLE.

CONTROLLING MEANS FOR ELEVATOR DOORS.

APPLICATION FILED APR.8. 1916.

1,257,109 Patented F65) 1918..

JOHN w. PEELLE, or BROOKLYN, new roan, .assrsnon T0 rrrn PEELLE comrenr, on

NEW YORK, N. Y., A CORPORATION OF NEJV YORK.

Specification of Letters Patent.

Patented ldelo. 3.9,

' Application filed Aprilfi, 1916. Serial No. 89,878.

To all whom it may concern:

Be it known that 1, JOHN VJ. PEELLE, a citizen of the UnitedStates, residing at the borough of Brooklyn, in the city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Controlling Means for Elevator-Doors, of which the following is aspecification, reference being had therein to the accompanying drawings, which form a part thereof.

My invention relates to controlling means for elevator doors and more particularly to a motor actuated mechanism common to, and operative in relation to, all of the doors in an elevator shaft.

A controlling means for elevator doors made in accordance with my invention is especially adapted for use in connection with vertically sliding elevator doors, which ordinarily are made in a plurality of sections so connected as to have simultaneous movement in opposite directions. In those doors of this type which are commonly known as semiautomatic, one of the door sections is of relatively greater weight than the other, so as to secure an overbalancing of the sections in a manner to cause the doors to either automatically open, or automatically close, according to which section is overweighted. In this type of doors, it is necessary to provide a limit stop to prevent the opening or closing of the doors except under the control of the elevator operator.

Heretofore in semi automatic elevator doors where the opening or closing of the doors is under the control of a motor, it has been necessary to provide each door with its own motor, thus complicating the elevator installation and making it prohibitive to use this mechanism in connection with in expensive installations such as are commonly used in factories'and warehouses. To obviate this condition, I provide a controlling mechanism which is common to all doors in an elevator shaft but may be used in connection with any one of said doors, without having any operative effect upon the other doors, said mechanism being controlled from the car and its operative efiect being deter,- mined by the position of the car in the. elevator shaft. In the embodiment of my invention shown in the accompanying drawthe extent that no door can be opened unless a car is on a substantial level with the sill of the doorway closed by the door to be opened, the motor for imparting movement to the door will act as a check or retard in controlling the movement of the door section upon which it operates when the same has movement, the draft mechanism actuated by the motor being so associated with the several doors that it will be normally in the operative relation to each of said doors but will pass from this relation upon the actuation of any door.

In addition to its functions in opening and closing the several elevator doors, the motor and its draft mechanism may be utilized as a supplemental lock for preventing the opening of anydoor while the elevator car is in travel, or when it is not at the door to be opened. I The invention consists primarily in such novel features construction and combina- 1 tion of parts as are hereinafter set forth and described and more particularly pointed out in the claims hereto appended.

Referring to the drawings Figure 1 is a front ele ation of series of elevator doors showing trolling means therefor:

Fig. 2 is a side view of the adjacent body portion of two doors in the closed position; and

Fig. 3 is a detailed view showing the limit two of a my constop mechanism and the controlling means therefor.

Like letters refer to like parts throughout the several views.

In the accompanying drawings, 1 have illustrated my invention in connection with .the elevator doors upon the two adjoining floors of a building, it being understood that by a mere extension of the draft cables and their appurtenances, the controlling means may be applied to any desired number of doors in a shaft. In the drawin I have also illustrated the invention in connection with semi-automatic doors of the self-opening type, in connection with which the form of the invention shown is especially adapted.

lathe drawings, the elevator shaft itself at opis illustrated at a, said shaft havin posits sides thereof parallel guide rails b for the elevator doors. Each of the doors shown comprises two sections, 'an*uppr section and a lower section :3 these sections being caused to move simultaneously and to the,

same extent in opposite directions by the flexible connections e passing over vthe pulleys or sheaves ,f. The lower. section a? in the tom of the irlventionshown, :is heavier than the upper section 0- so as to cause the door vto have a normal tendency to open.

This over-balancing of the upper door section by the lower section may be secured by making the lower section of heavier construotion, or by merely; applying thereto an overhalancing weight 3:.

" The section :5 in the term of the invention shown is provided with a flanged top rail an 'ular bracket 2' b" means of which ower may be applied to the doors for closing same.

In semi-automatic doors, it is essential to provide restraining means counteracting the normal tendency of the doors to move under gravity, such means being in the nature of a limit stop which must be released to permit the opening or closing of the doors. In, the form of the invention shown, this limit stop comprises a latch bar is pivoted at k, the head of said bar being normally projected beneath the top rail or bar 9 of the section 0?. Acting upon the lower arm of the bar is is a lever m upon one arm of which the spring n, acts in a manner tonormally project the head of the bar is in the path of the top rail or bar 9. Carried by the lever on is a plunger a normally projecting in the path of a cam p carried by and movable with the elevator car 9. By

providing actuating means for the limit stop of the character shown in the accompanying drawings, and means carried by the car cooperating therewith to release said limitstop when the car is on a substantial level with the sill of the door to be opened, only one door of all those in a shaft may be opened at a time and that door will be the one at which the car is located at the time. Other, and manually operative, means for locking door sections together may be employed if desired, however.

Also acting upon the doorsections at each doorway in the shaft, is a motop-actuated controlling mechanism normallyin the op erative relation to'all doors in a shaft to provide in the upper'part of any door and that the operation of either of these mechanisms alone will not permit the opening of the door. It .will also be ob served that the operation of one of these mechanisms is entirely automatic under the control of the elevator car, so that there must be Sucha definite sequence in the operations of the controlling or-locking-mechanislns as will-insure the presence of the car at the door which is .opened.

In the form of the invention shown, I the elevator shaft upon opposite. sides thereof, pulleys or sheaves H over which pass draft cables 8-8 which also pass through openings in the brackets 2' carried by the several door sections d. Each of said draft cables has thereon adjacent each bracket 2' and normally in engagement therewith respectively, a plurality of blocks or balls't-t firmly. secured to said cables. 'The depending ends of the cables 88" have attached thereto weights M and the other ends thereof .are connected to the piston of a compressed air motor 41, or to any other desired form of motor., The motor "0 shown in the drawings is ofan old and well-knowntype and a detail description thereof will not be entered into. The Tmotor is controlled by means of an old and well known form of magnetic valve to in circuit with the circuit controlling push buttons w and 'w carried by the elevator car g.

The operation of the herein described controlling fo1lows:-

. When a car is between floors,-the limit stopmechanism of all of the doors in the mechanism. is substantially as shaft, will be so set as to have thelatch bar is projected in a manner to cause the upper end thereof to be in the path of the top rail of bar 9 of lts door and all of the blocks or balls t -t upon both sides of the several doors'will be inoperative engagement with 'the'under side of their cooperating brackets 2. As the car passes each floor, in the form of the invention. shown, the cam' 79 thereof will engage the plunger 0, and through the lever m oscillate the bar k in a manner to dlsengage it from the top bar 9. By reason of the fact that the section 03 is overweighted the release of the bar It would permit the automatic opening of the door, if the motor j 4:, through the Y cables s.s and the balls tt' thereon, did not prevent movement of the doors. As the car passes each floor the stop is will return to its normal projected position beneath the top bar 9.

If it be desired to open any door, the car memos controlled by the rate of movement of the.

cables s-s'.

It will be observed, however, that while the door at the doorway where the elevator is stopped is permitted limit stops it since the blocks t-t' operative upon said other doors. will recede from the angles i.

When it is desired to close the door, the operator merely pushes the button 'w which will actuate the valve w in a manner to re- I verse the motor '0 and raise all of the blocks or balls Pt, and thus raise any door which may happen to be open at the time, said blocks or balls coming to rest directly beneath all of the angles '1'. of the several doors preparatory said doors. The mechanical closing of the doors under the control of the operator avoids any necessity for any nice proportioning of the relative weights of the different sections of the doors when a plurality of sections are used. If it be desired to fully close the doors before starting the car, the blocks or balls t-t will hold the doors in the closed osition until the car has been started, and tlie limit stop 75 becomes operative in relation to the door which has just been closed.

it is not my intention to limit the invention to the precise details of construction shown in the accompanying drawings, it being apparent- Without departing of the invention. I

Having described the invention, what I claim as new and desire to have protected by Letters Patent is 1. A controlling mechanism. for elevator doors which doors consist of two sections operatively connected, whereby they will have simultaneous vertical movement in opposite directions, and the upper of said sections'being overbalanced, by the lower, said mechanism consisting of astop operative upon the lower door section of each door in a shaft. when it is in the closed posifrom the spirit and scope tion, actuating means for each of'said stops,

mounted in said. shaft, means carried by an elevator car coiiperating with said actuating means whereby said stop can be released only when the car is at a dooropening, a

motor, a plurality of cables operatively conto'open the remaining doorswillbe held closed solely by their to the next actuation of any of that such may be varied nected with said motorand extending vertically in the shaftupon opposite sides of each door in said shaft, a plurality of blocks carried by each of said cables, a block upon each cable being adjacent the lower section of each door in the shaft, brackets carried by the lower section of each door, said cables passing freely through said brackets and said blocks normally engaging the under side of said brackets respectively, and means carried by the car whereby said motor may be actuated to lower said blocks to permit the opening of any door in the shaft when the stop mechanism therefor is released by the car, or to raise said blocks, to close any door which is opened.

2. T he combination of a plurality of elevator doors which comprise two vertically sliding sections movable in opposite directions, the lower of which overbalances the upper, of a plurality of stops operative upon the lower sections of said doors respectively when they are in the closed position, actuating means for said stops mounted adjacent each door, means carried by an elevator car cotiperating with said actuating means re spectively, a motor, cables operatively connected with said motor and extending upon opposite sides of each door, manually operative controlling means for said motor carried by the elevator car and operative independently of the movement of the car; and coiiperating means carried by said cables respectively and the lower section of each of said doors whereby said cables may have movement independently of said door section or ma have movement with any door section the stop for which has been released, when said motor has movement in one direction, and any opened doors will be closed when'said motor has movement in the -0ppo site direction.

3. Acontrolling mechanism for elevator doors omprising two sections operatively conncctcd whereby they will have simul taneousanovement in opposite directions, the upper of said sections being overbalanced by the lower, embodying therein a top bar upon the lower section, lateral extensions upon the said top bar,alimit stop adapted to pass under one of said extensions when the door is closed, actuating means for said limit stop, means carried by an elevator ear cooperating with said actuating means, an angle bracket having an opening therethrough carried by the lower section of each door in a shaft, a... motor, with said motor, puileys at the top of the shaft about which said cables pass, said cables passing through the openings in the brackets on each of the door sections respectively, blocks secured to said cables below said brackets whereby any door section may have downward movement with cables connected said cables and saidhlbcks willrgede from my si'g'natiire in the presence of two subthe door sectidns'remeiining-in clsed p0siscribing witnesses, this 4th day of April, jtion, sethatjthe seyerifl doors of the shaft 1916. v maybe selectively .openeiijas determined'by JOHN W. PEELLE. 5 .thezpositionj pfthe elevator car and 0011- Witnesses:

bmlh ng meansfor said motor. JUDITH Human;

n wimessjwhereof I have hereunto @ifixed CLAmcE FRANCK.

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