US1173192A - Elevator signaling apparatus. - Google Patents

Description

P. T. KENNY.

ELEVATR SIGNAUNG APPARATUS.

APPLICATION FILED ocT. 3, 1901.

Patented Feb. 29, 1916.

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ELEVATOR SIGNALING APPARATUS.

APPLICATION Flu-:n 00113, 1901.

Patented Feb.29,1916.

2 SHEETSSHEET 2- UNITED STATES PATENT orme PAUL T. KENNY, OF NEW YORK, N.' Y., ASSIGNOB '10 ELE'VTOR SUPPLY &. REPAIR COMPANY, A CORPORATION 0F ILLINOIS.

Specification of Letters Patent.

Patented Feb. 29, 191 6.

Application led October 3, 1907. Serial No. 395,696.

vator Signaling Apparatus, of which the following is a specification, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates tok an elevator signaling apparatus, and my `object is to improve and simplify lthe construction.

One of my objects is to provide a series of electrically-operated visual signals, one for each floor, for each car, with mechanism for operating .the same in each-direction of movement of the car by means of up and down controllers at each floor to be operated by the passengers, and which I have'generically termed passengers buttons.

Another bbject is to provide a particular arrangement of mechanism for restoring to normal condition the mechanism set bythe passengers buttons.

A furtherobject is to provide a construction by which the elevator gates or doors at the floors may restore-to normal condition the mechanisms set by the passengers buttons and which shall be more economical in wiring than has heretofore been the casein prior devices.

My invention will be set forth in the claims. y f

In the preferred embodiment of my invention shown in the drawings, Figure 1 represents a general diagrammatic view; Fig. 2

a detail of the same; and Fig. 3 a diagram are intended to show the main features of.

stillmore simplified than Fig. 1. Fig. 4 is'a further diagram of a portion of a construction shownin Fig. 1.

All these drawings are diagrammatic and the apparatus more clearly than constructional drawings will do. I have shown my invention diagrammatically in the drawings instead of by illustrat-- ing the same in its particular mechanical construction, because it may -be morel readily-understood and appreciated and 1t will of the invention may erated .visual signals,

be evident to any mechanic skilled in the art how my lnvention could be embodied, and I belleve that a more thorough understanding be had from the diagram than by illustrations of the particular mechanlcal devices which might be made use of. A

Referring to the drawings, 1 and'2 represent elevator carsl moved up and down in their shafts by a suitable hoisting mechanlsm not shown, and passing the floor gates or doors 3, 4, 5 and 6. The gates 3 and 5 are assumed to be at the third Hoor, and 4 and 6 at the fourth door, shown in each car a series of electrically-opsuch as ordinary incandescent lamps 7 and 8 in car 1, and 9v and 10 in car 2, the lights 7 and 9 represent ing the third floor, and 8 and 10 the fourth floor. In order to operate the same I have provided at each floor up and down mechanlsm to be operated by the intending passengers and'which I have generically termed passengers buttons. 11 and 12 represent the up and down passengers buttons at,

the third floor, and 13 and lfithose at the lfourth floor. They may obviously be of any .deslred construction, as will be evident to any oneskilled in the art. I have provided mechanism corresponding to each buttonwhich is set by itsbutton when the latter is operated, preferably by closing, a break in a normally-open circuit.

In4 the construction illustrated in the drawings I have provided setting magnets 15, 16, 17 and 18, connected to the passengers buttons 11 to 14, respectively, at one side, and at the other side connected to contacts 19, 20, 21 and 22. 23 to 26 represent pivoted switch arms which normally rest upon their respective contacts justgnamed, as indicated be connected to the return wire 27, which leads back to the source of electro-motive source as indicated, for example, by dynamo 28. When the button 12, for example, is pressed, a circuit will be closed from the dynamo through the button magnet 16,.con tact`20, switch arm 23, and back to the dynamo, thus energizing the setting mag- -by 23, 26, for example, and said levers may net 16 and drawing the switch arm over to the position of switch arm 25, that is, so that the switch arm 23 will leave contact 20 and touch a contact 29. Each of the other switch arms is provided with. a contact similar to 29, as indicated by to 32. The switch arms 24 and 25 are represented in full lines as having been thrown, the up button 11` on the third floor, and the down button 14 on the fourth floor, being assumed to have already been operated. When a switch arm is thrown to its set position, itwould immediately light up one of the lights in the car,'. providing that thecircuit from that light.

was closed by the switch arm as soon as it was thrown, but instead of lighting up the light immediately I have preferred to pro-l vide a commutator which coperates with the mechanism which is set by the push-but ton so that neither one alone willy display `the signal. In the embodiment shown in the drawings the commutator for car'1 comprises fixed contacts 33 to 36 and a moving contact 37 which is moved correspondingly with the movement of the car, although usu ally much slower as is commonin the art. The commutator for car 2 comprises similar fixed and moving contacts represented by In order that only the proper signals may be iven, that is, inorder that an up signal sha not be given fora car which is moving downwardly, and vice versa, I have provided what I have termed a directional 2 means which is operated by the movement of the car as it reverses its direction of movement, so as to render the mechanisms which have been set `bythe up passengers buttons, for example, incapable of coperating with the commutator to display the signals when the .car is moving down, and. vice versa, so that false signals will not be given. In the construction indicated in Fig. 1 I have provided a vibrating switch for each car indi` cated generically by 44 and 45, which are thrown when the cars reverse their direction of movement, as will be evident to any one skilled in the art. The car 1 at therleft is indicated as moving downwardly, and the switch 44 is indicated in its down position. Car 2 is indicated as moving upwardly, and

switch 45 is shown in its up position. A-

wire 46 from contact 36. leads to the movable contact 47, and from contactv 34 `a wire 48 leads to Contact 49. 50 and 51 represent stationary `contact springs which, when the switch is in the position shown, contact with 47"and 49 so as to close the breaks. Referring to carl, it will be seen that 'a circuit has been closed through lamp 8 which is indicated as lighted. The circuit may be Y traced from lamp 8, through the commutator contacts 35, 37, 36, hy wire 46 to contact A 47, to Contact 50, through magnet 84 to'conlcan operate the signal. I prefer to so arrange the moving and stationary parts of the commutator that thefsignal will be displayed only when the car is approaching the ioor corresponding to that signal, and is, for example, one or two oors away. A

53 and 54 are stationary contactsprings lsimilar to 50 and 51 which engage with the portions 49 and 47 when the 'switch is 'thrown over tothe left. The directional switch 45 is provided with four similar stationary contact springs55 to 58. The car 2 is moving'up and the switch 45 has been thrown so that the bridging contacts 59 and 60 are touching the springs 55 and 56.v

From the stationaryf contacts 38 and 40 wires-62 and 61 are connected to the bridging contacts 59 and 60, respectively, which latter contacts therefore close the circuit fromthe stationary' contacts to the s rings L 55 and 56. As the springs 55 and' 3 are both connected 'with the up passengers-button-set lever 24 of the third floor, and the car 2 is adjacent to and moving toward the third floor, a circuit will be closed from contact 38 of the commutator by wire 62I and spring 55 to the stationarycontact 30 of the up mechanism for the third floor, and from there by passengers-'button-set switch-arm 24 and returnwire to the source of supply. Thiswill light .up the lamp 9 in car.2 and signal the 'car to stop at the third floor. If

the up push-button 13 were also pushed the light -10 would also light up, because as "shown at 42 the moving contact of the commutator is arranged to touch the stationary contacts at times such thatthe signal will be given about two vloors ahead of where the car is to stop. It will also be obvious that when the' directional switch 45 is thrown to the opposite position, it will touch the contacts57 and 58 to put the commutator for' car 2 ink communication with the down passengers-button-set levers ,for

both floors, and that when the directional switch 44 is thrown to the left it will touch contacts 54 and 53 and put thepcommutator of. car l in-communication with the up passengers-button-set levers. In order to throw these switches as the cars' reverse their direction of movement, various means may be ein loyed as will be evident to any one skilledl in the elevator art, but a convenient mechanism is a loose or frictional connection with the overhead mechanism (not a contact in one shown) which will throw I have indicated direction or the other.

-contact 66. 67 and 68 are` magnets connected to the stationary spring contacts 69 and 70, respectively, which -are alternately engaged by the common contact 71.A When the switchl 45. is in the position shown and the car reverses its `directionof movement, the contact 64 will touch the spring 66, energize magnet 68 (because a circuit is closed throughthe magnet and by wire 7 2 to return i wire 27) and throw the switch over to the right to the down position of the switch, that is, to 'the same position as indicated by switch 44. This will break the circuit through magnet 68 as contacts 70 and 71 will separate. Contact V71 will, when the switch 1s thrown, engage with the contact 69 ready to throw the switch 45 back to its present position when the car again moves upwardly. It will be observed that switch 45 constitutes one form of a directional means operated by the movement of the car and rendering the up passengers-button-set mechanisms incapable of coperating with the commutator of that car to display the signal `when the ca r is moving down, and vice versa, that is, when car 2 is moving down, for example, the mechanism set by the up push-buttons cannot coperate with the commutator of car 2 Ato give the signals, and vice versa.

The car l has a similar arrangement for throwing the directional switch 14, 73 being the frictionally-driven portion, with its contact 74, stationary contacts 75 and 76,

magnets 77 and 78, spring contacts 79 and 8O and common contact 81.

lIn order to restore the passengers-buttonset mechanisms to normal condition, various means may be provided, but I prefer to accomplish the restoration by mechanism operated by the Hoor gates or doors. Various mechanisms have been proposed in the prior art for restoring push-button-set mechanism to normal condition b v means of the operation of the floor gates, but I have been enabled to accomplish this with a saving in wiring which is advantageous in many instances. In the construction shown I have provided a normally-open restoring circuit for each Hoor, and these circuits are vpreferably independent of each other so that the closure of one such circuit cannot `re store the passenges-button-set mechanism of any other floor. These circuits control the restoration of the mechanisms which have been set, to normal condition, preferably by actually causing such restoration byy means of mechanism operated by the said circuits.

Referring tothe embodiment of my invention illustrated in Fig. 1, 83 to 86 are Irestoring' magnets which when fully energlzed operate toA draw the switch arms 23 to 26 to the left to break the signal circuits and restore the switch arms to normal condition. It will be observed that these magnets are shown to be in series with the lights in the cars. Each of these incandescent lamps obviously comprises an ohmic resistance, and the ,magnets may be so wound that when the circuit through the corresponding light and a magnet is closed, enough current will vpass to light up the light, but not enough to fully energize the' magnet. If the light is short-circuited, however, by a shunt around the same, enough current will flow tothe magnet to fully energize the same, that is. suiiiciently to restore the push-.button-set mechanism to `normal condition. I have provided such a shunt or shortcircuit around each light for this purpose. Referring .to Fig. 2 which shows a detail of the up circuit for lamp 9, it will be observed that current is'passing through the restoring magnet 85, but not suiiiciently to fully energize the same. 87, 88 is one of the restoring circuits which, it will be observed, comprises a short circuit around the lamp. When the switch 89 (which represents the door switch) is closed, sufficient current will pass to the magnet 85 to fully energize theA same and draw the switch arm 21 .to its normal position, where it will make contact with contact 19, or, in other words, to restore the push-button-set mechanism to normal condition, in this case .also restoring the signal to normal condition.

Referring to Fig. 1, the restoring circuit just described is indicated by the same iigures of reference. l90 and 91 are stationary terminals closed by contact 89 mounted on a pivoted arm 92 under constantstress from spring 93. So long as gate 5 is closed it holds the arm 92 in the position shown, so

that the restoring circuit is open. but when the gate is opened in the direction of the small arrow, the portion 89 will close the break between the terminals 90 and 91, thus shortcircuiting lamp 9, as current will pass by wire 88 to wire 62 and back to magnet 85, as before described. Each of the other floor gates is provided with a similar switch indicated by 94 to 96, and as each of the other signals is provided with a similar short circuit closed b v such switches, it will be observed that the same operation takes place for the particular push-button-set mechanism controlled by the switch. It will also be observed that the directional switches prevent the restoration to normal condition switch 23 if push-button 12 hadbeen oper.

ated. lThe switch 45 therefore is one form of mechanism automatically connectingithe 10 restoring circuits with only ythose magnets correspondingto the up passengers-buttonset mechanisms when the car 2 is moving up, and vice versa. Obviously the directional switch44 has the same function with relation to the circuits corresponding to car 1. The provision of a. single restoring circuit for each oor gate and directional switch mechanism throwing the circuits into connectionv with the up or with the down magnets which control the restoration, is of advantage, because it does away with the necessity of running more than one circuit to each floor gate, and if these restoring circuits are independent of each other as they are shown to be in the diagram, the opening of one gate will not restore to normal condition the push-buttonset mechanism of any other floor. In Fig. 3

I have shown in simplified diagram the construction illustrated in Fig. l, so that it may be more easily followed, similar portions being indicated by the same reference characters. I have shown this figure to more clearly indicate the prominent features of the diagram shown in Fig. `1.

In Fig. 4 I have'shown a diagramof i Fig. 1 indicating how the up-and-down restoring switches are connected with the restoring magnets through the directional i0 switches which are thrown by the cars movement, and that it isonly necessary to have one wire from each switch in its own shaft. t I am aware that my invention may be embodied in constructions widely diiferent in appearance from those illustrated in the drawings, and I therefore do not confine myself to the construction shown.

WhatI claim is:

l 1. In an elevator signaling apparatus in -comprising an up and a down passengers button at each iioor, mechanism corresponding to each button set by its button, and a commutator, connections whereby saidsignals are operable only by the joint action of .said conimutator and a passengers-buttonset mechanism corresponding to the signal, said commutator-comprising a part moved correspondingly with the car and adapted to coperate with said button-set-mecha- 8-5 nims in succession in each direction of its movement to operate said signals, directional means operated by the movement ofthe car and rendering the up passengersbutton-set mechanisms incapable of coperating with the conimutator to operate the signals when the car is moving down, and vice versa, and restoring mechanism to automaticallyY restore said passengers-button-set mechanisms to normal condition.

3. In an elevator signaling aparatus in combination, a plurality of cars, a series of electrically-operated signals, one for each iioor. carried by each car, means for operating the same comprising an up and a down passengers-button at each floor, mechanism corresponding to each button set by its button, and a commutator for each elevator, connections whereby` said signals areoperable only by the joint action of av commutator and a passenger-s-button-set mechanism corresponding to the signal, each of said commutators comprising a part moved correspondingly with its car and adapted to coperate with said button-set-mechanisms in succession in each direction ofl its movement to operate said signals, and directional means for each car operated by the movement of its car and rendering the up passengers-button-set mechanisms incapable of cooperating with the commutators to operate the signals when the cars are moving down, and vice versa.

4. In an elevator signaling apparatus in combination, a plurality of cars, a series of 120 electrically-operated signals, one foreach Hoor, carried by each car, means for operating the same comprising an tup and a vdown passengers buttonv at each Hoor, mechanism corresponding to each button set by its button, and a commutator for each elevator, connections whereby said signals are operable only by the joint action of a commutator and a passengers-button-set mechanlsm corresponding to the signal, each of 13 said commutators comprising a part' moved correspondlngly with its car and adapted to cooperate lwith said button-set-mechanisms in succession in each direction of its movement to operate sald signals, directionalA ing down, and vice versa, and restoring mechanism to automatically restore said passenger/s button-set mechanisms tonermal condition. I

5.l In an' elevator signaling apparatus in combination, an electric signal comprising an ohmic resistance, means for setting 'the signal comprising a passengers button at a floor and mechanism set by 'said passengerfs button, restoring mechanism for restoring said passengers-button-set mechanism` to normal condition and comprisinga magnet in series with said signal, mechanism operated by said magnet when fully energized to restore the button-set mechanism to normal condition, a normally-open shunt circuit around said resistance, and means for closing said shunt circuit to'fully energize said magnetu Y 6. In an elevator signaling apparatus in combination, anl electric .signal comprising an ohmic -resistance,means for setting the signal comprising a passengers button at a, oor and mechanism set4 by said passengers button, restoring mechanism forV restoring 'said passengers-button-set mechanism to normal condition and comprising a magnet in series with said signal, `mecha- '40- nism operated by said magnet when fully energized to restore the button-set mechanism to normal condition, afnormally-open shunt circuit around said resistance`,.a ioor gate, and means operated by said licor gate for closing said shunt circuit.

7. In an el'evator signaling apparatus in combination, a car, electrically-operated signaling means, mechanism for operating the same comprising an upand a down passengers button at each tloorand mechanism for each button set by operation of the corresponding button, a gate at each floor, restoring mechanism adapted to restore said Ipassengers-button-set mechanisms to normal condition and comprising a normally-open restoring switch for each licor closed by operation of its corresponding gate and a magnet corresponding to each passengers-button-set mechanism and adapted to control the restoration of the same, and mechanism, automatically connecting said restoring switches with only those magnets corresponding to the up passenger s-button-set mechanisms when the car is moving up, and

vice versa, and a commutator having a part moved correspondingly to themovement of the car and arranged to cause the operation of a signal onlywhen said car is approaching the floor to whichgsaid signal corresponde.

8. In an elevator signaling apparatus in combination, acar, electrically-operated signaling means, mechanism for operating the same comprising an up and a down passengers button at each licor and mechanism for each button` set by operation of the correspending` button, a gate at each floor, restoring mechanism adaptedto restore said passengers-button-set mechanisms to normal ,condition and comprising a normallyopen restoring switch for each ioor closed by operation of its corresponding gate and a magnet corresponding to each passengersbutton-set mechanism` and adapted to control the restoration of the same, and mechanism automatically connecting said restoring switches with only those magnets corresponding to the-up passengers-button-set mechanisms when the car is moving up, and vice versa, said restoring switches being independent of each other whereby the closure of one of said switches cannot restore the passengers-button-set mechanism of any other floor, and a commutator having a part moved correspondingly to the 'movement of the car and arranged to cause the operation of asignal only when said car is approaching the door toy which said signal corresponds. Y l,

9. Inan elevator signaling apparatus in combination, a car, electrically-operated signaling means, mechanism for operating the same comprising an up and a down passengers buttonat each door and mechanism' for each button set by operation of the corresponding button, a gate at each licor,

restoring mechanism adapted to restore said 'passengers-button-set mechanisms to' normal condition and comprising a normally-open restoring' switch for each :door

closed by' operation of its corresponding gate and a restoring magnet corresponding to each passengers-button-set mechanism to restore the same to normal condition, and mechanism automatically connecting said restoring switches with only those magnets corresponding to the up passengers-buttonset mechanisms when the car is moving up, and vice versa, and a commutator having a part moved correspondingly lto the movement of the car and arranged to cause the operation of a signal' only when said car is approaching the floor to which said signal corres ondal 10. n an elevator signaling apparatus incombination, a car, a slgnaling device for each of a plurality of floors, means for operating the same comprising an up and a down passengers-button for each Hoor and mechanism for and s et by each button and a part moved correspondingly with the car and adapted to coperate with f said mechanisms to operate all said signaling devices in successlon 1n each direction of movement of lthe car, said means also includingy mechanism rendering said moving part 1ncapable of so coperating with the up passengers-button-set mechanisms when the car is moving down, and vice versa.

11; ln an elevator signaling apparatus in combination, a car, a signaling device for each of a plurality of ioors, means for operating the same comprising an up and a down passengers-button for each floor and' mechanism for and set by each button and a part moved correspondingly with the car and adapted to coperate with said mechanisms to operate all said signaling devices in succession in each direction of movement of the car, said means also including mechanism rendering said moving part incapable of so coperating with the up passengers-button-set mechanismswhen the car is moving down, and vice versa, another car, 'and means corresponding individually thereto for restoring the said passengersbutton-set, mechanismsto normal condition.Y

includingv mechanism rendering said moving part incapable of so coperating withv the up passengers-button-setmechanisms when the car is moving down, and vice versa.

13. En -an elevator signaling apparatus in combination, a car, a signal-controlling circuit for each of a plurality of. floors, a signaling device foreach floor, each operated by one ,of said circuits, means controlling said circuits and comprising an up and a down passengers-button for each ioor and mechanism for 'and set by each button and a commutator coperating therewith and having a part moved correspondingly with the car and adapted to close all said clrcuits 1n succession 1n eachv direction of movement of the car, said means also including' mechanism rendering said moving part incapable of so, coperating withl the up passengers-button-set mechanisms when the car is moving down, land vice versa, another car, and means corresponding individually thereto for restoring said passengers-button-set mechanisms to normal condition. f

14. ln an elevator signaling apparatus in combination, a car, a signal-controlling circuitfor each of 'a plurality of iioors, a signal lamp for each fioor eachoperated by one of said circuits, means controlling said circuits and comprising an up and a down passengers-button for each floor -and mechanism for and set by each button and a commutator coperating therewith and having a part moved correspondingly with `the car and adapted to close all said signal circuits in succession in each direction of movementof the car, said means also including mechanism rendering said moving part incapable of' so coperating with the up passengersbutton-set mechanisms when the car is moving down, and vice versa.

15. In an elevator signaling apparatus in combination, two cars, and for each floor and corresponding to each car a single signaling device adapted to cause a signal to be given in eachA direction of movement, of its car, means for operating the same yin each direction .of movement of the cars and com-l prising an up and a down passengersbutton at each iioor, and for each button signal-controlling mechanism set whenever that button is operated 4and adapted to control the operation of the corresponding signalsol ing devices for that floor, and for each car switch mechanism automatically operated by that car and rendering the up passengersbutton set mechanisms incapable vof controlling the operation of the said signaling devices corresponding to that car while that car is moving down, and restoring mechanism corresponding to each car for restoring the passenger-s-button-set mechanisms.

' 16. In an elevator signaling apparatus in combination, two cars, and for each fioor and corresponding to each car a single lamp adapted to cause a signal to be given in each direction of movement of its car, means for operating the same in each direction of movement of the cars and comprising an up and a down passengers-button at each floor, and for-'each button signal-controlling mechanism set whenever that button is operated and adapted to control the operation of the corresponding lamps for that door, and for each car switch mechanism automatically operated by that car and rendering the up passengers-button-set mechanisms incapable or controlling the operation of the said lamps correspondingl to that car while lthat car is moving down, and restoring mechanism corresponding to each car `for restoring the passengers-button-set mechanisms.

17. in an elevator signaling apparatus in combination, 'two cars, and for each floor and corresponding to each car a single signaling device adapted to cause a signal to be given in each direction off movement or its car, means for operating the same in each direclGO A vair/3,192

tion of movement of the cars and compris-V ing an up and a down, passengers-button at each Hoor, and for each button signalcontrolling mechanism set whenever that button is operated and adapted to control the operation of the corresponding signaling devices for that floor, and for each car switch mechanism automatically operated by that car and rendering `the up passengers button set mechanisms incapable of controlling the operation of the said signaling devices corresponding to that car while that car is moving down, and a commutator operated by that car and causing its signals 'to be given successively, and restoring mechanism corresponding to each car for restoring the passengers-button-set mechanismsl 18. In an elevator signaling apparatus in combination, two cars, and for each floor and corresponding to veach car a single signaling device adapted to cause a signal to be given in each direction of movement of its car, means for operating the same in each direction of movement of the cars and comprising an up and a down passengers-button at each Hoor, and for each 'button a single signal-controlling mechanism set whenever that button is operated and adapted to control the operation of the corresponding signaling devices for that floor, and for each car switch mechanism automatically operated by that car and rendering the up passengers-button-set mechanisms incapable of controlling the operation of 'the said signaling devices corresponding to that car while that car is moving down, and restoring mechanism corresponding to each car for restoring the 'passengei"sbutton-set mechanisms.

19. In anelevator signaling apparatus in combination, a car, a signal, means for operating the same comprising a passengers-button on a'oor and a device set thereby whenever said passengers-button is operated, a magnet arranged to control the restoration of said device, a circuit therethrough having a normally-open switch automatically closed when said passengers-button is operated and said device is set, a short circuit arranged to control the restoration-operation of said magnet, and a circuit-shifting switch operated by the car and automatically rendering said short circuit incapable of controlling the magnet during one direction of movement of the car.

20. In an elevatol signaling apparatus in combination, a car, signaling means, means for operating the same comprising up and down mechanisms corresponding to a floor and arranged to be set by a passenger on a floor, a restoring magnet for each passenger-set mechanism and a circuit therefor having a normallyopen switch therein closed automatically when said passengerset mechanism is moved to its signal-setting position, a single normally-open switch controllable by the car operator, and circuit-shitting mechanism serving to connect said single normally-open switch with said restoring magnets alternately.

2l., In an elevator signaling apparatus in combination, a car, signaling means, means for operating the same comprising up and down setting circuits and mechanism corresponding to and lset'by each circuit, and means operatedby the passenger on the floor for closing said circuits, an electricallycontrolled restoring means Jfor each passenger-set mechanism, a single normally-open switch controllable by the car operator, and a circuit-shifting switch serving to connect said single normally-open switch with said restoring means alternately, said circuitshifting switchA being independent of said setting circuit. whereby the passenger may close a setting circuit at any time and irrespective of the direction said car or any other carlma-y be moving.

22. ln hn elevator signaling apparatus in `combination, a car, a single signaling means for each of a'plurality of floors, means for operating' the same in each direction of movement of the car comprising a commutatoil adapted to operate each signal as the car approaches its floor and up and down signal-controlling mechanism corresponding to each direction of movement of the car and arranged to be set by a passenger on a floor, another car having a similar signaling device for each loor controlled by said passenger-set mechanisms, and circuit-shifting mechanism arranged to prevent the down passenger-set mechanism from transmitting a signal to an tip-moving car when 'the other car is moving down.

9.3. in an elevator signaling apparatus in combination, a car, signaling means, means `for operating the same comprising an up and a down passengers-button at a floor and mechanism corresponding to and set by each button, an electrically-controlled restoring magnet and circuit for each passengersbutton set mechanism, circuit changing mechanism including a single nornally-open switch and a circuit-shifting switch serving to connect said single normally-open switch with'said restoring magnets alternately, .said circuit-changing mechanism also including a part moved correspondingly with the car during its travel and adapted to cooperate with said circuitshifting switch inclosing the circuits to said magnets, whereby the circuits through said normally open switch and to said magnets are closed only when the car is near the said iioor.

l 24. In. an elevator signaling apparatus in combination, a car, an electrically-operated signal-giving device and circuit therefor, a commutator adapted to close said circuit as alternately, and means for restoring the Setting-circuit switches.

Signed at the borough of Manhattan in I the county, city and State of New York, this 3:)

28 day of September A. D. 1907.

PAUL T. KENNY.

Witnesses:

RoMoLA GORDON, G. A. LEE'.

Images