US1254331A - Elevator signal system. - Google Patents

Description

A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

APPLICATION FILEDAPR. 16. 1913.

. Patented Jan.22,1918.

4 SHEETS SHEET 1.

A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

I APPLICATION FILED APR. 16| I913. 1,254,331.

m H w m m 4 f w m Ev "Ii/E8858 dgwxfi/ L ATTORNEY A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

APPLICATION FILED APR. 16, 1913.

4 SHEETSSHEET 3 mvss s ATTORNY A. LE BLANCf ELEVATOR SIGNAL SYSTEM.

APPLICATION FILED APR. 16, 1913.

1,254,331. Patented Jan. 22,1918.

4 SHEETS-SHEET 4- INVENTOR UNITED STATES PATENT. onnion.

ALEXIS LE BLANC, OF NEW YORK, N. Y., ASSIGNOR TO GURNEY ELECTRIC ELEVATOR COMPANY, OF HONESDALE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ELEVATOR SIGNAL SYSTEM.

Application filed April 16, 1913.

To all whom it may concern:

Be it known that I, ALEXIS LE BLANG, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful 1mprovements in Elevator Signal Systems, of which tl e following is a specification, reference being had to the accompanying drawings. forming a part thereof.

My invention relates to elevator signal systems and its object is to provide a simple and eliicient call and indicating system which is easy to install and reliable in action. It also includes improvements in various d tails of construction. and in certain devices which form parts of the system.

1 will describe my invention in the follow" ing specification in which the various cooperating parts of the system will be specifically described and the novel features of such parts and of the system as a whole will be pointed out in appended claims.

In the drawings,

Figure l is a diagram showing an elevator car and station indicators together with as many of the electrical circuits and other devices as are necessary to describe a practicable embodiment of my invention.

Fig. :2 is another diagram of a car and a pressure responsive arrangement for actu ating certain parts of the station indicators.

A detail of construction is illustrated in Fig. 3 this being a switch and arrangements for actuating it, controlled either by the position of the car or by the position of the switch.

A push-button and indicator case is shown in front elevation in Fig. 4: and Fig. 5 is a sectional plan view taken through the center thereof to show a feature of construction of the push-button.

One of the station indicator actuators is shown in sectional side elevation in Fig. 6.

Figs. 7 and 8 are sectional elevations of portions of this device at right angles to the section in Fig. 6, taken on the lines 7-7 and 88 respectively.

A door actuated switch used in this system is illustrated in sectional elevation in Fig. 9 with the position of the door below it shown.

F ig. 10 is a top plan view of this door switch.

Specification of Letters Patent.

Patented Jan. 22, 1918.

Serial No. 761,435.

A sectional plan view of the door switch is shown in Fig. 11, the section being taken on the line l1-11 of Fig. 9, and Fig. 1:2 is a sectional elevation of a portion of this device taken on the line. 1i2l2 of Fig. 11.

Referring first to Fig. l, I will describe the system itself and its operation, after which I will specifically describe the various mechanisms and devices shown in the other figures of the drawings, using throughout like characters of reference to designate similar parts.

10 designates a source of electrical supply, preferably of low voltage, such for example as a storage or primary battery. From one of its terminals runs a conductor 11 which goes to the car 12 through a flexible portion H In the car it passes through an operators switch 13 by means of which the operator in the car controls the supply of current to all the devices associated with his car and its hatchway and stations. From this switch runs a flexible conductor M to a feed wire 14.

At each floor or station is a single pushbutton for which lamps energized by the bat cry 10 are provided. At each of the intermediate stations are two of these lamps 20 and 21 the first of which is preferably colored red. At the bottom station only the red lamp 20 is necessary while at the top station (not shown) only the uncolored lamp 21 is required. One terminal of all these push-button lamps is connected with feed. wire l-ilby a branch wire such as 15. The other terminal of all the red lamps 20 is connected through a conductor 16 with a stationary contact 31 of a direction switch 30, and the other terminal of all the uncolored lamps is connected through a conductor 17 with a stationary contact 32 of the same switch. The direction switch has a n1ov-= able contact arm 83 which is .Etl'l'fll'lfiktl to rest upon contact 31 when the car approaches or is at the upper end of its path of travel or is moving downward, or to rest upon the contact 82 when the car is at the lower end of its path of travel .or is moving upward. This contact arm is connected by a conductor 18 with the other terminal of battery 10.

Consequently whenever the operators switch 13 is closed the red push-button lamps at all the floors are lighted when the car is its run or is moving downward of the uncolored push button lamps are lighted which will be the case if the car is at the bottom of its run or is moving upward.

The push buttons themselves are desig nated by 40 and each is connected with the side of the battery through the branch conductors 15 with the feed wire 14. Back of each push button is a spring contact 411 with which tl e button first engages who actuated and after which it is moved against a stationary contact which is connected with an arm l?) which is normally raised against contact 4.4: by a spring but which may be pulled down against contact -15 by a magnet 46 when the latter is energized. 4:7 and l8 are relay windings arranged to close a contact between an arm 4-9 and a stationary contact above the winding 17 or with a similar contact above the winding 48.

The indicators each comprise a movable member or arm 50 which is actuated by the movement of the car. This is arranged to move over a series of stationary contacts 51 as the arm moves to its central position, which are connected respectively to a series of lamps 52 which are preferably colored red. The upper two contacts are connected to the upper lamp and the other contacts are connected each to one of the lamps. The other terminals of all of these lamps 52 are connected with conductor 16.

If the arm is below these contacts and is moved upward toward its central position it moves over a series of contacts 53 which are similarly connected with a series of lamps 54 which are preferably uncolored. The other terminals of lamps 54 are connected with conductor 1?. By providing two ccnta'cts for each of the end lamps as shown, it is energized twice and indicates the general position of the car a little earlier.

lVhen near and at its central position the arm 50 also touches a stationary contact 55.

In conjunction with each door is a door actuated switch 60 each of which comprises a magnet winding 61 which controls the opening of a circuit at G2, and another magnet winding 63 which controls the opening of a circuit at (34-.

At each landing is a pair of interlock re lays each pair of which comprises a magnet winding arranged to d aw down an armature T1 against a contact T'Zto close a circuit and another magnet winding 73 arranged to draw down its armature 7% against a contact T5.

In the car is a signal lamp the circuit through which is controlled bv a relay which comprises a magnet winding 81 which when energized draws its armature 82 against a contact 83. St is the usual illuminating lamp for the car which is fed from mains 85 "one of which is connected with the contact inseam 83 and the other of which is connected through the si l lamp 80 with armature 82. Consequently when the magnet winding 81 is energized, the signal lamp circuit will be closed and the signal lamp illuminated.

As reference has been made to the various devices shown in Fig. l, T will now describe the operation of the system illl'lstrated in this figure, reser *ing until later a more specific description of the construction and operation of the devices used. in the installalion of such a system.

It has been stated that when the elevator car approaches or is at the top of its run or is moving downward, the arm 33 of the direction switch 30 will rest upon contact 31. As feed wire 14; is connected with wire 11 from the side of the battery 10, cir cuits will then be closed from this feed wire through branch wire 15, through red push button lamps 20, conductor 16, direction switch 30 and conductor 18 to the other side of the battery. Consequently all of the red push button lamps 20 will be illuminated. This will show at each floor the fact that the car has approached or is at the top oi its run or that it is moving downward.

But if the car has approached or is at the lower end of its run or is moving upward, the arm 33 of the direction switch will rest upon contact 32. Under these conditions no circuits can be established through the push button lamps 20. but the uncolored lamps 21 will then be illuminated through circuits from branch wires 15, conductor 17 and direction switch 30. Thus either all of the down push button lamps 20 or else all of the up push button lamps 21 are always illuminated whenever the operators switch 13 i closed, so that person in any hall can see at glance whether a given car is going 111 or down.

Let us assume that the car is above station and is either at the upper end of its path travel or is moving toward that station. person desiring to go down then presses ans 1 button 40 at that floor. This push buton is connected with the -lside of battery 10 through one of the branch wires 15. he inward movement of the push button moves contact l1 against: contact 42 and completes a circuit through contact 4--'land relay winding 47 and through a conductor 90. through wires 16 and-18 to the other side of the battery. Thus winding 47 is energized and pulls down arm 4-9 onto the stationary conact above this winding. This establishes a circuit from feed wire 1-1- and branch 15 to the indicator arm 50 and to and through winding 61 of the door swi ch to wire 16 and thence to the other side of the battery, thus energizing the winding 61.

The inward movement of the push button at the same time closes a circuit from itself through a conductor 91 through winding l U ii of the interlock switch at that floor to wire 18 and thus to battery. The magnet 70 will then pull down its armature T1 to which conductor 91 is also connected, against contact 72 which establishes a circuit through wire 92 and through the closed contacts out all of the door switch contacts 62 to conductor 93 which is connected with conductor 11 and with the side of the battery. This results in the interlock n'iagnet 7O maintaining a circuit, from the battery through relay winding 47 after the push button. is released and the energized relay winding 47 maintains the circuit through door switch winding 61.

With the circuits in this condition the downward movement of the car will move indicator arm toward its central position. If the latter is not already on one of contacts 51, it will continue to more until touches the upper of this series of contacts. This will cause the upper of the red lis'hts 52 at this station to be illuminated. It has been shown that the plus side of the battery is now connected to the indicator arm 50 and the circuit will be completed through the upper of contacts 51, upper of lamps 52, wire 16, contact 31, arm 33 and wire 18 back to the battery. Further movement et arm 50 in the same direction will move it ett of the upper of contacts 51 when the upper red light will go out. After this arm 50 moves onto the next of contacts 51 when the upper red lamp 52 will again I e illum nated. Still further movement of the arm 50 will bring;

it consecutively onto the succeedii cci c'ts 51 so that the other red lamps will be illuminated successively. The pat are so adiusted that the arm 50 will reacn its central osltion when the car is at t e landing;

P for which the indicator is pi;'oletl. The person who pushed the button \Yll. therefore be advised of the approach of the car.

Just before the car reaches ti e landing, the indicator arm 50 will touch the stationary contact his will close a circuit through wires 9-1, 95 tlexilole con luctor 95 throu 'h car relay windin S1 flexible con O D ductor 36 and wire 96 to the battery. The rela windinn' 81 thus enere'izcd its 3 o armature 82 against contact 83 which closes the circuit from mains 85 through car signal lamp 80. This shows the car operator that a stop is desired at the landing he is approachin v When a plurality of e raters are in stalled together the push o H, indicator and door switch devices and circuits there for are duplicated so that there is a complete set of all of these parts at each floor for each car. Only as many of these parts as are necessary to fully disclose the operation of the system are shown in the dia rain as the duplication of them on the drawing; would only lead to confusion. It

noted however, that there is a push button for each car at each floor, for each of which. are two direction indicating lamps 20, 21, so that a person standing in a hall can see at a glance which cars are available for taking him down and r-Jhich for taking him up. If he pushes the button for any down car this will one q ize all of the relays l7 at his floor so that the indicator lamps of all down cars in a limited distance from his floor will be illuminated as the different cars approach. Consequently the passemrer can see which of the cars is nearest his floor. The car signal lamp of the first car to approach the door will be the first one to be illuminatet.

llow we will assume that he car operator stops his car at the landing B at which the button had been pressed for a down car. In opening the hatchway door the electrical connection. at (32 influenced by ma gnet wind- 61, as "\Vlli hereinafter be shown, is broken. This breaks the circuit t trough interlock magnet winding; 70 which in turn allows its armature to be lifted from contact 72. This cuts oti the current supply from all the relay magnets 47 on that particular floor. The effect of this is to clear the tloor and to leave the system in the con-- dition it was in before a huttoi'i tor a down car had been actuated.

if any of the cars were at the lower ends ot their paths of travel or were below station B anl moving upward toward it the "olored push button ligh s 511': for every an ear Wlil no illunnna tet passenger desiri such butswitch 30 connected i any i this case the (lllG' tion t l. A

- v'. "3 a 4 s onaected wire it] and has a circ .i .Olh-Cfl'l magnet winding; 46 and 9? to wire 1?. This it draw the ture ahcve vindmg 16 away from con- 7 i i onto contact ell-C ll be down onto thi inn".

he. rest of the operation will be similar to that previously described, except that magnet winding 73 of the interlocl i l ow the winding" lZGCl and armature pulled contact above the latter wind will he energ zed instead of winding 70, and iagnet winding 63 of the door switch will he energized instead 0 winding 61. The

cater contact 50 will move upward tow rd its central position causing the low uncolored lamp -34 to he lighted twice and each or" the other lamps to be lighted consecutively. At a redeterminel distance of the car from floor B, the arm 50 will close the car relay magnet circuit at contact the operator will get his sienal as helll the door it will in this case be the contact at 6 1 that is broken and the relay contact of the interlock switch that clears the floor.

Thus each push button serves for a down call or for an up -all whenever a car is in condition to respond to such a call. Any or all push buttons on a given floor which are in condition to transmit a down call (which condition. is clearly indicated by the illumination of the red push button) will transmit its signal to any of the cars which approach the floor from above. Any or all of the push buttons which are in condition to transmit an up call, will transmit its signal to any of the cars which approach the floor from below. Moreover these down and up calls are noirinterteringas are also the clearing devices for the floors, that is the door switches 30 and the interlock relays.

There is one push button at each elevator shaft so that in a large installation with a long line of elevators a passenger is not required walk to a central poetion but may press the nearest button which happens to be in condition to transmit the oarticular signal which he desires.

The switch for causing the illumination 01 the indicator lamps 5 5-1. is preferably adjusted to move from one of its contacts to the next as the car moves from one floor to the adjacent one so that a 3813011 in a hall can see how far away the car is. But the device is so arranged that none of the indicator lamps is ilhn'ninated except when one or more of the cars near the doc and then only it a button has been pressed. This is of decided advantage especially in a tall building with many elevators because the indicator lamps "for all cars more than a predetermined distance away are dead' so that the passenger will see only the indicator lights for the nearest cars. it has been pointed out that none of the ir. icator lamps is illuminated unless button has been pressed. It is also true that only the down indicator lamps become illum nated after a button for a down signal has been pressed and only the up indicator lamps become illuminated after button for an up signal has been presesd.

in order to show more in detail some of the mechanisms which it have devised for carrying out this system. 1 will describe the devices shown in the other figures of the drawings.

in Fig. 2. a pressure changing" device is shown which is placed about halt way up the shaft. Between this and the car 12 is a flexible member 101 which may be the cable comprised of the flexible conductors 11 1-5, and 96: This is so arranged that as the position of the car changes, a greater or less amount of the weight of the member 101 will act upon the fluid below a diaphragm 102 in the pressure changing device. This fluid is in communication with a tube 103 in the hatchway which tube is closed at its ends and is connected by branches 10-1 with pressure responsive devices .105 one of which is provided for each lloor or landing.

One of these is shown more in detail in G. This comprises a casing within \illICll 1s a flexible diaphragm 106 with which is connected a vertically movable rod 107 which starts to move upward when the pressure below the diaphragm 10G reaches a predetermined value sullicient to raise a weight 108 and continues to rise in proportion to the change of position of the car. against the action 01 an adjustable spring; 109. its upwarn movement is limited so that after it has moved up as far as it can, a continued rise in the pressure will have no eiliect upon the rod.

lVhen the pressure decreases, it will at a predetermined point allow the rod 10? to move downward until it reaches the lower limit of its movement after which further decrease in the pressure will have no eliect upon the rod 107.

The weights 108 are diii erent atthe different tloors and are so pr portioned as to cause the dilierent rods to be in the center of their path of movement when the car is at the floor for which the pressure rcsponsive device is provided. This part of the apparatus is made the subject matter of another application for Letters Patent filed il 113th 1913, serially numbered 761.44-36. the aforesaid api'ilication is a more elaboiate decri :LlOn of this mechanism.

These pressure responsive devices 10;) are the actuators for the floor indicators. A. part of rod 10? forms a rack 110 with which meshes ninion 111 on a shaft which is rotatably ported in blocks 1123 and 113 (it insulati. material. To the shat't are allixed two arms 11 i and 115 in each of which is an oiienina carrying a ball 11-: and 115 Springs 11-1 and 1143 move with the arms and are arranged to press the balls outward.

in the insulating block 112 is a continuous metallic ri g 118 a d concentric therewith are metallic pieces 11?. A groove is formed between the ring; 116 and the pieces 11? in the block 112 and the bull 11 lruns in this groove. These parts form the movable arm 50 and the series of lamp contacts 51 and 53 of 1.

in block 118 is a ring 118 similar to ring 116 and connected with the same conductor, and a segment 119. An annular groove is prov ded t r the run of ball 11?)". The segment 119 forms the contact of Fig. 1.

It may be seen that the apparatus illustrated in Figs. 6, 7 and 8 performs the functions hereinbefore described for illuminating the indicator lamps 52, 5-1 and as the car approaches a landing and for closing the circuit for car relay magnet 81 when the car is near or at the landing.

Referring now to Fig. 3 the :means for actuating the direction switches will be described. The hoisting rope or the counterweight rope passes over a sheave 31 on the shaft of which is frictionally mounted an actuator comprising two arms and 36. The switch arm 33 is pivoted to swing about the axis of the shaft onto the stationary contacts 31-32. A spring 37 is under tension between the switch arm 83 and a fixed point directly above its pivot.

The operation of this part of the device is that if switch arm 33 is upon contact 31 and the car ascends. it will cause the sheave 34: to rotate in a direction indicated by the arrow. The actuator will move with it and its arm 85 will engage the switch arm to push it to the left. As soon as the switch arm passes its center, the spring 8? draws it over onto contact Further movement of the actuator brings its arm 85 against switch arm again, after which it will slip on the shaft of sheave 34; at its point of frictional connection therewith.

Obviously a downward movement of the car will cause actuator arm 36 to move switch arm 33 onto contact 81. The space between the arms is provided to allow a limited reverse movement of the car to take place without atl'ecting the direction switch. This permits the car operator to return to a floor he has passed without showing change of direction at the push-button lights.

Such an arrangement shifts the direction switch when the car moves, but as it is desirable to have this switch in its down position when the car is at the upper end of its run even if at rest, I have provided other means for accomplishing this. In Fig. 3, 120 is a pressure responsive actuator connected with the tube 103 by branch 121. This is adjusted to raise its rod 1.22 when the car at the upper end of its run causes the pressure in tube 103 to reach a predetermined value. The rod 122 is connected with the lower arm of a bell crank lever 123, the upper arm of which is moved to the right against the opposition of a spring 1241, and to force the switch arm 33 over past its center so that spring 37 will carry it over to the down contact 31.

125 is another pressure responsive actuator connected with tube 103 by branch 126. This one has a rod 127 connected with the lower arm of a bell crank lev r 128, to the upper end of which is connected a spring 129 which pulls it over to the left when the pressure in tube 103 reaches the point it has when the car is at the lower end of its run. This will cause switch arm 83 to be moved onto up contact 32.

A desirable form of push button and indi cator is illustrated in Fig. at. The push button itself, 40, is in the center of this casing which is adapted to contain all of the station mechanism shown in Fig. 1 except the door switch 00 and the interlock relays 70.

In this case the down push button lamp 20 is directly above the push button back of a panel 17 on the back of which is arranged to show the word Down when this lamp is illuminated. The up push button lamp 21 is back of a similar panel 4-8 below the push button which is arranged to show the word Up when this lamp is illuminated.

The five down indicator lamps 52 are back of the five circular openings above panel 4:7, and the up indicator lamps are back of the circular openings below panel 18. The circular openings are covered with curved glass disks which project beyond the outer surface of the casing and are preferably formed with facets so that the lights may be seen from the sides of the device as well as from in front of it.

I prefer also to make the push button itself with a similar glass surface as is shown at 19 in Fig. 5 and to place within it push button lamps 20 and 21 in circuit with the lamps 20 and 21 respectively.

One of the push button lamps will thus be always lighted and if they are made to correspond in color to the lamps 20 and 21 the push button itself will be illuminated with either a red or white light and will indicate apart from the lamps 20 and 21. the direction of car travel. Obviously, the lamps 20 and 21 and the panels 17 and %8 may be omitted if desired.

It may be seen that a person desiring to signal a car to stop at his landing can see at a glance which of the cars is in condition to receive a down call and which are in condition to receive an up call. If he pushes one of the buttons for a down call. this will cause the down indicator lamps 52 for all cars which are in condition to receive such a call, and which are within six floors of the landing for which the button has been pressed, to be illuminated. If a car is five or six floors above the landing or comes within such distance after the button has been pressed, there will be a red light show at the upper circular opening. This light will go out and be lighted again when such a car is at the fifth floor above the landing. Then when the car reaches the fourth floor above the landing a light will appear at the next to the upper opening. These lights will respectively approach the push button until the car reaches the landing.

As the indicator lamps for several cars may showat the same time, the person who pushed the button may readily see which of such cars is nearest him. of course a similar el'lect will be produced it a signal tor an up car has been sent in.

I have arbitrarily called the down push button lamps and the down indicator lamps red. and the others uncolored as this is a preferred arrangement. but no limitation is intended by such description.

Referring now to Figs. 9, 10, 11 and 12, I will describe the construction of the door switch therein illustrated and will point out its operation more specifically.

This device is supported upon a metallic plate so which may be set into the door cas-. ing above the sliding door 66. A hole is provided in plate 6.3 in which is a ball 67 which projects below the plate into the path of movement of a projection 68 which is preferably a leaf-spring as shown.

130 is a plate of insulating material and 131 the base of an iron magnet frame. Two pairs of uprights 13:2 rise from this base and are connected by cross members 133 to complete the, magnet frame. The plate 130 and magnet frame base 131 are spaced from the plate (35 and from each other by corner lugs and these parts secured to ether by screws 13 1-.

Extending centrally through the parts 130 and 131 is a vertically movable rod 135, the lower end of which is enlarged, of inverted cupshape, and is positioned directly above the ball 6?. To the upper end of this red is atlixed a non-magnetic flat bar 136 near the ends of which are secured magnet core sections 137 and 138, which project through the cross members 138 of the ma gnct frame into the magnet windings (31 625 respectively. The structure just described is a rigid one so that when the rod 135 is raised the magnet core sections are raised with it.

Under the core section 13? is a lower magnet core section 110 which is also vertically movable within magnet winding 61. The lower end of this section is enlarged as at 111 to limit its upward movement by engagement with the base 131 of the ma net frame and below this is secured a washer 112 of insulating material of still larger diameter.

Under core section 138 is a similar lower core section with a lower enlarged end 1491 to which is secured an insulating washer 145.

14-6 is a spring contact mounted upon the insulating plate 130 and above it and in sulated therefrom is another spring contact 1-17, the end of which projects over the an nular shoulder formed by the washer 1-l2. These spring contacts are arranged to close a circuit at the point 62.

Another pair of spring contacts H8 and 149 are similarly mounted on plate 130 with the end of contact 149 overlapping the washed These are arranged to close acircuit at the point (it.

When the door is opened by being moved to the right, the spring 68 will raise the ball 61' and this will ti rce the rod and its 1W0 connected upper magnet core sections 13? 138 upward. If nether of the magnet windings 61G3 are ener ized, this movement or the door will have no further cliect. But it a button has been pressed at the floor at which this door switch is mounted for a down signal, this, as has been pointed out, will cause magnet winding 61 to be encrgized. This then will cause the upward movement of upper magnet core section to raise with it lower magnet core section 1 10 but will have no effect upon lower core section 143. When lower magnet core section 110 raises, its connected washer 1-l2 will raise spring ctntact 117 "from spring contact 116 and will break the circuit which had been closed at 62. This will cut oil the curr at supply from magnet winding of the interlock relay and will clear the floor of all existing down signals. lhus the opening of any door 01 a given landing will clear any and all down signals which have been sent in by pressing one or all of the buttons at such landing which have been pressed tor down signals.

Similarly, after an up signal has been sent in the winding (33 will be energ'zed that the act of opening the deer will cause lower magnet core section 118 to be raised and its washer 1-15 will raise spring contact 11-9 from sprirg contact 118 to break at (it the current supply to interl clz relay winding T3. This will clear the floor of all up sig nals.

Although the varicus devices which 1 have described are capable of performing the funct ons required of them for an operative installation 01 my system it is (bvious that many of the details of construction may be varied widely and that other devices than those specifically described may be utilized w thin the scope of this invention and within the limitations of the appended claims.

One of the advantages of this svsem is the ease of installation as many of the devices are self-contained and may be as sembled and even adjusted in the shops. The wirirg needed in the building is also extremely s mple so that the cost of installa tion is'small compared with such systems as have herctotore been used.

What I cla m is:

1. In combination with an elevator car. a station signal transmitter, circuits therefor, means acuated by the moven'ient oi" the car for-changing said circuits whereby the same mo ement of the signal transmitter may be utilized for sending a down signal when the l t t l (El connect the down signal transmission line with the supply of energy and for causing the upward movement of the car to actuate the direction switch to connect the down signal transm ssion line with the supply of energy, a lost motion connection in said actuating means to permit a reversal of movement of the car through a material space without allecting the direction switch, and. a station signal transmitter arranged to complete a circuit through whichever of said transm ssion lines is connected ith the supply of energy.

In combination with an elcntor car, a down signal transmission line. an up signal transmission line, a direction switch arranged to connect one or the other of said transmission lines with a supply of energy, means for causing the downward mo ement of the car to actuate the direction switch to connect the down signal trans iission line with the supply of energy and for causing the upward movement of the to actuate the direction switch to connect the up signal transmission line with the supply of energv, cther means for actuating the direction switch when the car reaches the ends of its path of travel, and a station signal transmitter arranged to complete a circuit through whichever of the transmission lines is connected with the supply of energy 4. In combination with an elevator car. a down signal transmission line, an no signal transmission line, a direction sv sch arranged to connect one or the other of said. transmission li es with supply of energ, means for causing the downward movement of the car to actuate the direction switch to connect the down signal transmi sion line with a supply of energy andfc-r causing the upward movement of the car to actuate the direction swi ch to connect the up signal transmission line with the supply of energv, a lost inction connection in said actuati b means to permit a reversal of movement of the car through a limited space without affecting the direction switch. other means for actuating the direction switch when the car reaches the ends of its path of traveh and a station signal transmitter arrarged to complete a circuit through whiche er of said transmission lines is connected with the supply of energy.

est :7

5. In combination with an elevator car, a down signal transmission line, an up signal t'ansmission line, a supply of energy, a di recticn switch arranged to connect the sup ply of energy with one or the other of said transmission lines, a rotatable shaft connected with the car, an actuator frictionally connected with said shaft and arran ed to be lllOYCCl a limited distance from side to side by rotation of the shaft. in opposite directions to move the direction switch to con nect one or the other of said transmission lines n t the supply of energy, said actuator comprising a pair of spaced arms adapted to engage the switch and arranged to pro vide a limited reverse movement of the actuator without aliiecting the direction switch, and a station signal transmitter arranged to complete a circuit through whichever of said transmission lines is connected with the supply of energy.

6. in combination with an elevator car, a down signal wire. an up signal wire, a direction switch comprising two stationary contact with which said w'rcs respectively are connected, and a pivotally supported contact arm arranged to swing from one to the other of said contacts, a source of electrical supply connected. with the switch a m, a. rotatable shaft connected with the car, an actuator frictionally connected with said shaft and arranged to be moved from side to side a limited distance by the rotation of said in opposite directions, said actuator comprising two spaced arms, one on each side of said switch arm, each a1 tlllLQCl. to force t c switch arm from one of shid contacts to cause it to move on to the other contact, the engagen'ient of the switch arm with the contact being arranged. to limit the movement of the actuator and the spacing betiveen 'tihe actuator arms being provided to permit a reversal of movement; of the act uator through a limited space without at iiectmg the Silc'Cll arm, and a push button arranged to complete a circuit through whichever of said signal wir s is connected with the source of electrical supply.

Y. In combination with an elerator carfa down signal wire, an up signal wi e. a di rection switch comprising two stationary contacts with which said wires respectively are cornice-ted, and a pivotally supported contact arm arranged. to swing from one to the other of said contacts, a tension spring coiniccted with said arm and with a fixed point. above its pivotal. support. a source of electrical supply connected with the switch arm, a rotatable shaft connected with the car, an actuator frictionally connected with said. shaft and ar'anged to be moved from to side limited distance by the rotaticn of said shaft in opposite directions, said actuatorcomprising two spaced arms one on each side of said switch arm, each arranged to force the switch arm past it center from one of said contacts to cause it to be moved onto the other contact by the spring, the engagement of the itch arm with the contacts being arranged to limit the movement oi? the actuator and the spacing between the actuator arms being provided to permit a reversal of movement of the actuator through a limited 5 iace without affecting the switch. arm, and a push buttou arranged to com: plete a circuit through whichever ot' signal wires i connected with the source or electrical supply,

8. in combination with an elevator car, a plurality of s blOll signal transmitters, circuits therefor, means actuated by the movement of the car for changing said circuits whertoy tl e s ne increment of any of the signal transn tors may be utilized tor sending a down signal when the c is at the upper end of its run or is me; cg down ward toward said transmitter, or an up signal. when the car is at the lower end oi? its travel. or is moving upward toward said transmitter.

9. An elevator signal system comprising a single station signal transmitter arranged to send either down or up signals when actuated, and means at said transmitter to in dicate which of said signals it will send.

10. An elevator signal system comprising a single tation signal transmitter a u god to send either down. or up signals wl en actuated, a pair of lamps at said transmitter, and means for illiuniuating one of said lamps when too transmitter is in condition to send a down signal and for illuminating the other lamp when the transmitter is in condition to send an up signal.

11. An elevator signal system con'i 'irisiug a station push button means arranged to send down and up signals when actuated, a pair of lamps within said push button means, and means for illuminating one of said lamps when the push ht ton means is in condition to send a down si nal. and. for ilhtm'iiuating the other lamp when too push button means is in condition to send an up signal.

12. [in elevator signal system comprising a station push button means ha ring a transparent taco, said push button means being arranged to send down and up signals when actuated, pair of lamps of different apearance within said push button means,

and means for illuminating one of said lamps when the push button means is in condition to send a down signal and for illuminating the other lamp when the push button means in condition to send an up signal.

13. in combination with an elevator car, a down signal circuit, an indicating lamp therefor, an up signal circuit, an indicating lamp therefor, a direction switch arranged to be actuated by the movement of the car arranged to connect one or the other of said. signal circuits with a source of electrical supply, and means for causing the downward movement or" the car to actuate the direction switch to connect the down signal circuit with the source of electrical supply and to close a circuit through its indicating lamp and for causing the upward move ment of the car to connect the up signal circuit with the source of electrical supply and to close a circuit through its indicating amp, a lost motion connection in said actuating means to permit a reversal of movement of the car through a limited space without affecting the direction switch, and other means for actuating the cirection switch when the car caches the ends of its path of travel; and a station signal transmitter ar ranged to complete a circuit through whichrer of said signal circuits is connected. with the source of electrical supply.

l t. in elevator system comprising a plurality of station signal transmitters each arranged to send either down or up signals when actuated, and means at each transmitter to indicate which of said signals it will send.

15. An elevator signal system comprising plurality of station signal transmitters arranged to send down and up signals when actuated, a pair of lamps of unlike appearance at each transmitter, and means for illuminating the lamps of one appearance at each transmitter when the transmitters are in condition to send down signals and for illuminating the other lamps at the transmitters when said transmitters are in condition to send up signals.

16. In combination with an elevator car,

a signal therein, a station signal transmitter, circuits between said transmitter and the car signal, means actuated by the move ments of the. car for changing said circuits whereby the same movement of the signal transmitter may be utilized for energizing the car signal for a down call when the car is at the upper end of its run or is moving downward toward said transmitter, or for up signal when the car is at the lower end of its travel or is moving upward toward the transmitter.

17. In combination with an elevator car, a signal therein, a circuit for said car signal, a down signal transmission line, an up sig nal transmission line, a direction switch arranged to connect one or the other of said transmission lines with a supply of energy, means for causing the downward movement of the car to actuate the direction switch to connect the down signal transmission line with the supply of energy, and for causing an. upward movement of the car to actuate the direction switch to connect the up signal transmission line with the supply of energy and other means for actuating the direction switch when the car reaches the ends of its path of travel, and a station signal transmitter arranged to complete a circuit through whichever of said transmission lines is connected with the supply of energy, and con trol said car signal circuit,

18. In combination with an elevator car, a signal therein, a circuit for said car signal, a plurality of station signal transmitters, circuits therefor, means actuated by the movement of the car for changing said circuits whereby the same movement of any of the signal transmitters may be utilized to control said car signal circuit for a down signal when the car is at the upper end of its run or is moving downward toward said transmitter, or an up signal when the car is at the lower end of its travel or is moving upward toward said transmitter.

19. In combination with an elevator car, a signal system comprising a signal in the car, a circuit for said signal, a station signal transmitter arranged to control said car signal circuit to send down and up signals when actuated, and means at each transmitter to indicate which of said signals it will send.

20. In combination with an elevator car, a signal system comprising a signal lamp in the car, a station push button arranged when actuated to control said signal circuit to cause the car signal lamp to be illuminated for down and up signals when actuated, a pair of lamps within said push button, and means for illuminating one of said push button lamps when the push button is in condition to send a down signal and for illuminating the other push button lamp when the transmitter is in condition to send an up signal.

21. In an elevator signal system, a down signal circuit, an up signal circuit, an elec trio station signal transmitter, including a signal push button and a selector relay for changing said signal circuits so that a signal may be sent through either of said circuits by the same push button.

22. In combination with an elevator car, a down signal transmission line, an up signal transmission line, a station signal transmitter, including a push button and a selector, said push button being arranged to send a signal through one of said lines for one direction of car movement, and to first actuate the selector and to then send a signal through the other line for the other clirection of car movement.

23. In combination with an elevator car, a down signal circuit, an up s gnal circuit. an electric station signal transmitter, including a push button and a selector relay associated therewith and a relay circuit, said push button being arranged to send a signal through one of said signal circuits for one direction of car movement and to first close the selector relay circuit and to then send a signal through the other signal circuit for the other QllI'QCtlOll of car movement.

24:. In combination with an elevator car, a down signal transmission line, an up signal transmission line, a direction switch arranged to be actuated by the movement of the car and arranged to connect one or the other of said transmission lines with a supply of energy, a station signal transmitter arranged to complete a circuit through whichever of said transmission lines is connected with the supply of energy, and a selector relay associated with said transmitter controlled by said direction. switch and arranged to cause the same movement of the transmitter to close the desired circuit.

25. In combination with an elevator car, a down signal circuit, an up signal circuit, an electric station signal transmitter, a selector relay'associated therewith, a relay circuit, said transmitter being arranged to send a signal through one of said signal circuits for one direction oi"? car movement and to first close the selector relay circuit and to then send a signal through the other signal circuit for the other direction of car movement, and a direction switch arranged to be actuated by the movel'nent of the car and to control said s gnal and relay cificuits.

26. In combination with an elevator car, a signal lamp therein, a circuit for said signal lamp, a car signal relay arranged to control said circuit, a relay winding there-tor, a signal system comprisi a source of electrical supply, a station signal transmitter, a down signal. circuit and an up signal circuit between said transmitter and said car signal relay whereby the energization of the relay winding from said source of electrical supply may be coi'itrolled, another supply of electrical energy in the car, and means controlled bv the energizaticn of said relay winding for connecting said other supply of electrical energy with the signal lamp circuit.

In coi'nbination with an elevator car, a signal therein, a. station signal transmitter,

circuits between said 't'l'illlSl'llltltQl and the car signal, means actuated bv the movements of the car for changing said circuits wh by the same movement of the s gnal transmitter may be ut lized for energizing a circuit for a down call when the car is at the upper end of its run or is moving downward toward said transmitter or another circuit for an up signal when the car is at the lower end of its travel or is moving upward toward the transmitter, and means actuated by the movement of the car in the direction for which a car signal circuit has been energized, to complete said circuit.

28. In combination with an elevator car, a signal therein, a circuit for said car signal, a

plurality of station signal transmitters, circuits therefor, means actuated by the movement of the car for changing said circuits whereby the same movement of any of the signal transmitters may be utilized to control said car signal circuit for a down signal when the car is at the upper end of its run or is moving downward toward said transmltter, or an up signal when the car is at the lower end of its travel or is moving upward toward said transmitter, and means actuated by a downward movement of the car as it approaches a station from which a down signal has been sent and by an upward movement of the car as it approaches a station from which an up signal has been sent, to

complete the car signal circuit.

29. In combination with. an elevator car, a signal system comprising a signal lamp in tit} car, a circuit therefor, a station push button means arranged when actuated to control said signal circuit for down and up signals when actuated, a pair of lamps within said push button means, and means for illuminating one of said push button lamps when the push button means is in condition to send a down signal and for illuminating the other push button lamp when the transmitter is in condition to send an up signal, and means actuatec. by a downward movement of the car as it approaches a station from which a down signal has been sent and by an upward movement of the car as it ap proaches a station from which an up signal has been sent, to complete the car signal lamp circuit.

30. In combination with an elevator car, a plurality of station doors, a plurality of station signal transmitters, circuits therefor, means actuated by the movement of the car for changing said circuits whereby the same movement of any or" the signal transmitters may be utilized for sending a down signal when the car is at the upper end of its run or is moving downward toward said transmitter, or an up signal when the car is at the lower end of its travel or is moving upward toward said transmitter, and means actuated by the opening of a door at the station tron which a signal has been sent for deenergizing whichever of said circuits has been utilized for sending a signal.

31. In combination with an elevator car, a plurality of station doors, a signal in the car, a circuit :tor said car signal, a plurality of station signal transmitters, circuits therefor, door switches in said circuits, means actuated by the movement of the car for changing said circuits whereby the same movement of any of the signal transmitters may be utilized to control said signal circuit for a down signal when the car is at the upper end of its run or is moving downward toward said transmitter, or an up signal when the car is at the lower end of its travel or is moving n ward toward sai l transmitter, said door switches being actuated by the opening of a door at the station from which a signal has been sent for breaking which ever transmitter circuit has been utilized for sending a signal.

in an elevator signal system, a station door, a station signal transmitter, a down sijnal transmission line, an up signal trans mission line, a selector associated with the transmitter for cl anging said transmission lines so that a. signal may be sent through either of said lines by the some movement 01" the transmitter, and means actuated by the opening of the door for breaking whichever signal transmission line has been utilized for a signal.

33. In combination with an elevator car, astation door, an electric station signal trans n'iitter, a down signal circuit, an up signal circuit, selector relay associated with the transmitter for changing said circuits so that a signal. may be sent through. either of said circuits by the same movement of the transmitter, means actuated by the moven'ient of the car for controlling said selector relay, and a door switch in said signal circuits actuated by the movement of the door and arranged to break whichever signal circuit has been utilized for a signal.

34-. In combination with an elevator car, a station door, a si ":l in the car, a station signal transmitter. a door switch, circuits between said transmitter and the car signal through said door switch, n'ieans actuated. by the movement of the car in dili'erent directions for causing the same movement of the transmitter to energize one of said circuits for one direction of car movement and to energize another of said circuits for the opposite dircctiou of car movei'nont, and means actuated by the movement of the car in the direction for which a car signal circuit has been energized to complete said circuit, said door switch being arranged to be actuated by the opening oi the door for breaking whichever transmitter circuit has been energized by the transmitter.

ln combination. with an elevator car,

a plurality of station doors, signal in the car, a circuit for said car signal, a switch For each door, a plurality of station signal transmitters, circuits between said transmitters and the car through said door switches, and means actuated or 1 for changing said circuits whereby the same movement of any of the signal transmittens may be utilized to control said car signal circuit for a down or an up signal,

mean actuated by a downward movement of the car as it approaches a station from which a down signal has been sent or by an upward movement of the car it approa ches a station from which an up signal been sent to complete the car signal cirthe movement of the cuit, said door switches being arranged to be actuated by the opening of a door at the station from which a signal has been sent for breaking whichever circuit has been utilized by a transmitter for controlling the car signal circuit.

36. In combination with an elevator car, a station door, down signal circuit, a holding magnet therein, an up signal circuit, a holding magnet therein, a station signal transmitter comprising a single push button and arranged to energize either one or the other of said circuits, and means actuated by the opening of the door for dee'nergizing the holding magnet in whichever circuit has been energized by the transmitter 37. In combination with an elevator car, a station door, a down signal transmission line, a holding magnet therein, an up signal transmission line, a holding magnet therein, a direction switch arranged to be actuated by the movement of the car and arranged to connect one or the other of said transmission lines with a supply of energy, a station signal transmitter comprising a single push button and arranged to complete a circuit through whichever of said transmission lines is connected with the supply of energy, and means actuated by the opening of the door for dee'nergizing whichever holding magnet has been completed by the transmitter.

38. In combination with an elevator car, a station door, a down signal wire, a holding magnet therein, an up signal wire, a holding magnet therein. a door switch in said wires, a direction switch arranged to be actuated by the movement of the car and arranged to connect one or the other 01? said signal wires with a source of electrical energy, and a push button arranged to complete a circuit through whichever of said signal wires is connected with the source of electrical energy, said door switch being arranged to be actuated by the opening of the door to deenergize the holding magnet in whichever of said circuits has been completed by the push button to break said circuit.

39. In combination with an elevmor car, a station door, a signal in the car, a circuit for said car signal, a down signal wire, a holding magnet therein, an up signal wire, .1 holding magnet therein, a door switch in said signal wires, a direction switch arranged to be actuated by the movementof the car and arranged to connectone or the other of said signal wires with a source of electrical energy, and a station signal transmitter comprising a single push button arranged to energize a circuit through which over of said signal wires is connected with the source of electrical energy and to control said car signal circuit, said door switch being actuated by the opening of the door to deenergize the holding magnet in whichever signal circuit has been energized by the push button.

40. In combination with an elevator car, a station door, a down signal circuit, a hold ing magnet therein, an indicating lamp for said down signal circuit, an up signal circuit, a holding magnet therein, an indicating lamp for said up signal circuit, a direction. switch arranged to be actuated by the movement ot the car and arranged to connect one or the other oil? the signal circuits with a source of electrical supply and to close a circuit through one or the other o't said indicating lamps, a station signal transmitter con'iprising a single push button and arranged to complete a circuit through whichever of said signal circuits is connected with the source of electrical supply, and means actuated by the opening of the door for deenergizing the holding magnet in whichever signal circuit has been con'ipleted by the transmitter to break said circuit.

ii. In an elevator signal system, a station door, a down signal trmismission line, a holding magnet therein, an up signal trans mission line, a holding magnet therein, a station signal transmitter, comprising a push button and a selector tor changing said transmission lines so that a signal may be sent through either of said lines by the same miiwcmcut ot' the transmitter, and means actuated by the opening oi. the door for docuergiziug the holding magnet in whichever signal transmission line has been untilized to! a ml to break said line.

In combination with an elevator car,

a station door, a signal in the car, a station signal transmitter, a door switch, a pair oi? holding magnets, circui between s .d transmitter and the car signal through said door switch. and holding naguets, means actuated by the movement of the car in diii' erent directions for caus the same movement of the transmitter to energize a circuit for one direction of car movement and to energize another circuit for the opposite direction of car movement, and means actu fl by the movement of the car in the direction for which a car signal circuit has been energized to complete said circuit, said door snitch being arranged to be actuated by the opening of the d or for deenei-gizing whichever holding magnet has been energiz-ccd by the transmitter to break its circuit. combination with an elevator car, a it ot station doors, a plurality of i ,ul transmitters, circuits therefor, holding i'nagnets in said circuits, means actuated by the movement the car for changing said circuits whereby the same movement of the signal transmitters may be utilized for sending a down signal when the car is at the upper end of its run or is moving downward toward said transmitter. or

Y static? s gn ill) up signal when the car is at the lower end of its travel or is moving upward. toward said transmitter, and means actuated by the opening of a door at the station from which a. signal has been sent for decnergiw ing the holding magnet in whichever of said circuits has been utilized for sending a sig nal to break said circuit.

ll. in combination with an elevator car, a plurality of station doors, a signal in the car, a circuit for said car signal, a switch for each door, a plurality of station signal transmittors, a pair of holding magnets for each station, circuits between said transmitters through said door switches and holding magnets, and means ictuated by the move ment of the car tor changing said circuits whereby the same moven'ient of any of the signal t ansmitters may oe utilized to con trol said car signal circuit for a down or an up signal, n'ieans actuated by a downward movement of the car as itapproaches lion. from, which a down signal has been sent or by an upward movement of the car as it approaches station from which an up signal has been sent to oomph-lite the car signal circuit, said door switches being arranged to be actuated by the opening of a door at the station from which a signal has been sent for deenergizing the holding magnetin whichever circuit has been utilized by a transnitt r for controlling the car signal circuit to break said circuit.

In combination with an elevator car, a station indicator signal, a station. signal transmitter, circuits therefor, means actuated by the car reaching the ends oil its travel and by the movement of the car in diti'erent directions for causing the same movement of the transmiliteiito control a circuit for a downward movement of the car and to control another circuit tor an upward movement of the car, and other means actuated by the movement of the car for actuating the station sir ial after said transmitter has been actuated.

4:6. in combination with an elevator car, a down. station indicator signal, an up station indicator signal, a station signal transmitter, circuits therefor, means actuated by the movementof the car for changing said circuits whereby the same movei'nent ot the signal transmitter may be utilized for sending down signal when the car is at the upper end of its run or is moving downward, or an up signal when the car is the lower end of its run or is moving in, ward. and other means actuated by the downwarc .inovement o1 the car for actuating the down station indicator signal after the transmitter has sent a down signal or by the upward movement or" the car for actuating the up station indicator signal after the transmitter has sent an up signal.

In. combination with an elevator car,

a staa plurality of station indicator lamps at a station, a statlon signal trai'ismitter compi ng a single push button, circuits there for, means actuated by the moven'ient oi: the

car in. dil'lercnt directions for causing the same movement of the push button to con trol. a circuit for a downward moment of the car and to control another circuit for an upward movement of the car, and other means actuated by the movement oil the car as it approaches the station for siuxaissivcly illuminating the station indicator lamps at a station after the push button at that station has been actuated.

l8. in combination. with an elevator car, a plurality of. down station indicator lamps at a s ation, a plurality of up station indicater lamps at a station, a station signal transmitter compr sing a single push button, circuits ticreitor, means actuated by the movement of the car for changing said circuits whereby the same moven'int oi": the

push button may be utilized for sending either a down signal or an up signal, and other means actuated by the downward movement ol the car at. it approaches the station. for successively illuminating the down indicator lamps at a station after the push button at that station has sent a down signal, or by the upward movement of the car as it approaches the station for successively illuminating the up indicator lamps at the same station.

In combination with an elevator car, a ion indicator signal, a station signal transmitter arranged to send down and up signals when a ituated, means at said transmitter to show which of said signals it will send, and other means actuated by the movement of the car for actuating the station in dicator signal after said transmitter has been actuated.

50. In combination with an elevator car, adown station indicator lamp, an up station. indicator lamp, a station signal transmitter, pair of lamps at said transmitter, means actuated by the movement of the car for illuminating one of said pair of lamps when the transmitter is in condition to send a down signal and for illuminating the other of said pa of lamps when the transmitter is in con dition to send an up signal, and other means actuated by the movement of the car from above tor illuminating the down station indicator lamp after a down signal has been sent and by the movement of the car from below for illuminating the up station indicator lamp after an up signal has been sent.

51. In combination with an elevator car, a, plurality of down station indicator lamps, a plurality of up station indicator lamps, a station push button arranged to send down and. up signals when actuated, a pair of lamps within said push button, means actuail-ed by the movement of the car in dillerent directions for illuminating one of said push button lamps when the push button is in condition to send a down signal and for illuminating the other push button lamp when the push button is in condition to send an up signal, and other means actuated by the movement of the car as it approaches the station from above for successively illuminating the down station indicat r lamps and as it approaches the station from below for successively illuminating the up station indicator lamps.

52. In an elevator signal system, a push button and associated means arranged to send down and up signal when actuated, a, casing for said push button, a pair oi lamps within said casing, means for illuminating one of said pair of lamps when the push button is in condition to send a down signal and for illuminating the other of said pair of lamps when the push button is in condition to send an up signal, a plurality of down station indicator lamps, a plurality or" up station indicator lamps, and means for successively illuminating the down station indicator lamps after the push button has been actuated to send a down signal and the up station indicator lamps after the push button has been actuated to send an up signal.

53. In an elevator system, a casing com prising a centrally disposed push button having a transparent face, means associated with said push button whereby said button is arranged to send down and up signals when actuated, a pair of lamps of ditli'erent appearance within said push button, means for illuminating one of said lamps when the push button is in condition to send a down signal and for illuminating the other of said lamps when the push button is in condition to send. an up signal, a plurality of down station indicator lamps above said push button, a plurality of up station indicator lamps below the push button, and means for successively illuminating the down station indicator lamps alter a down signal has been sent by the push button and for successively illuminating the up station indicator lamps after an up signal has been sent by the pusl'i button.

54,-. In combination with an elevator car, a signal therein, a .tation signal transmitter, circuits between said transmitter and the car signal, means actuated by movements of the car in different directions for causing the same movei'nent ot' the transmitter to energize a circuit for one direction of car movement, and to energize another circuit for the opposite direction oi car movement, a station indicator signal, and means actuated by the movement 01'. the car in the direction for wnich car signal circuit has been energized, to complete said circuit, and to actuate the station indicator signal.

in combination with an elevator car,

a signal therein, a station signal transmitter, circuits between said transmitter and the car signal, means actuated by the movements of the car for changing said cir cuits whereby the same movement of the signal transmitter may be utilized for energizing a circuit for a down signal when the car is at the upper end of its run or is moving downward toward said transmitter or another circuit for an up signal when the car is at the lower end of its travel or is moving upward toward the transmitter, a down station indicator signal, an up station indicator, and means actuated by the movement of the car in the direction for which car signal circuit has been energized, to complete said circuit and to actuate one of said station indicator signals.

56. In combination with an elevator car, a signal therein, a station si nal transmitter, circuits between said transmitter and the car signal, means actuated by movements of the car in different directions for causing the same movement of the transmitter to energize a circuit for one direction of car movement, and to energize another circuit for the opposite direction of car movement, a set of down station indicator lamps, a set of up station signal lamps, and means actuated by the movement of the car in the direction for which a car signal circuit has been energized, to complete said circuit and to successively illuminate one of indicator lamps.

57. In combination with an elevator car, a station. door, a signal. in the car, station signal transn'iitter, door switch, circuits between said transmitter and the car signal through said door switch, means actuated by the movement of the car in different directions for causing the same movement of the transmitter to energize a circuit for one direction or car movement and to energize another circuit for the opposite direction oi? car movement, a. station indicator signal and means actuated by the movement of the car in the direction for which a car signal circuit ha been energized to complete said circuit and to energi e the station indicator signal, said door switch being arranged to be actuated. by the opening of the door for breaking whichever transmitter circuit has been energized by the transmitter.

58. In combination with an elevator car, a station door, a signal in the car, a station signal transmitter, a door switch, a pair of holding magnets, circuits between said transmitter and the car signal. through said door switch and holding magnets,-means actuated by the movement of the car in different directions for causing the same movement of the transmitter to energize acircuit tor one direction of car movement and to energize another circuit tor the opposite direction of car movement, a down station indicator signal, an up station indicator signal, and means actuated by the movement oi the car in. the direction for which a car signal circuit has been energized to complete said circuit a id to actuate the corresponding station indicator si nal, said door switch. being arran ed to be actuated by the opening of the door for deenergizing whichever holding n'iagnet has been energized by the transn'iitter to break its cir cuit.

59. In combination with. an elevator car, a station door, a signal in the car, a station signal. transmitter, a door switch, a pair of holding magnets, circuits between said transmitter and the car signal through said door switch and holding magnets, means actuated by the movement of the car in different directions for causing the same movement or the transmitter to energize a circuit for one direction of car movement and to energize another circuit for the opposite direction oi? car movement, a set oi down station indicator lamps, a set of up station indicator lamps, and means actuated by the movement of the car in the direction for which a car signal circuit has been onergized to complete said circuit and o successively illuminate the indicator lamps of the corresponding set, said door switch being arranged to be actuated by the opening of the door for deenergizing whichever holding magnethas been energized. by the transmitter to break its circuit.

60. In combination with an elevator car, a down signal circuit, a holding magnet therefor, a down interlcck relay in said circuit, an up signal circuit, a holding magnet therefor, an up interlock relay in said circuit, station signal transmitter comprising a single push button and arranged to momentarily energize either of said circuits and said interlock relays being arranged to maintain the GZlClQIlI Zillil-OU of whichever circuit is en 'ized by the g transmitter.

61. In combination with an elevator car, a station door, a down signal circuit, a hold ing magnet therefor, a down interlock relay in said circuit, an up signal circuit, a holding magnet theretor, an up interlock relay in said circuit, a station signal transmitter comprising a single push button and arranged to momentarily energize either oi' said circuits and said interlock relays being arranged to maintain the energization of whichever circuit is energized by the transmitter, and means actuated by the opening of the door for deli ergizing the interlock relay and the holding magnet in whichever circuit has been energized by the transmitter.

G2.- lu combination with an elevator car, a station door, a signal in the car, a circuit for said. car signal, a down si nal wire, a

holding relay in magnet therefor, an up interlock said circuit, an up signal wire, a, holding magnet therefor, an up interlock relay in said circuit, a door switch in said signal wires, a direction switch arranged to be actuated by the movement of the car and arranged to connect one or the other of :aid signal wires with a source ol electrical energy, and a station signal trans mitter comprising a single push button arranged to energize circuit through whichever of said signal wires is connected with the source or electrical energy and through its interlock relay to energize one of said holding magnets and to control. the car Sig oal circuit, said door switch being actuated by the opening of a door to deenergize the interlock relay to cause it to break the circuit, through a holding magnet in whichever signal circuit has been energized by the push button.

63. In combination with an elevator car, a station door, a signal in the car, a station. signal transn'iitter, a door switch, a pair 0t holding magnets, a pair of interlock relays, circuits between said transn'iitter and the car signal through said interlock relays, means actuated by the movement of the car in different directions for causing the same movement of the transmitter to energize circuit for one direction of car movement and to energize another circuit for the opposite direction of our movement, and means actuated by th movement of the car in the direction for which a car signal circuit has been energized to complete said circuit, said. door switch being arranged to be actuated by the opening of the door for deeuergizing whichever interlock relay and holding mag-- net has been energized by the transmitter to break their circuits.

(it. In combination with a phrality oi? elevator cars, a station signal transmitter comprising a signal push button tor each tar, circuits for said transmitters, means acti'lated by the movements of said cars for ch the circuits for their respective transmitters where 'iy any push button may be utilized when its car moving downward for sending a down signal to all of the cars moving toward the transn'iit-ter from above or when its car is mming upward for sending an up signal to all of the cars moving toward said transmittc" from below.

In combination .vith a plurality of elevator cars, a station signal transmitter comprising a signal push button for each car, circuits for said transmitters, means actuated by the movements of said cars for changing the circuits for their respectiwt ansmitters whereby any push button may be utilized when its car is moving downward for sending a down signal to all of the cars which are at the upper end of their runs or are moving toward said transmitter from above, or may be utilized when its car is moving upward for sending an up signal to all of the cars which are at the lower ends of their runs or are moving toward said transmitter from below.

66. In combination with a plurality of elevator cars, a station signal transmitter for each car, circuits for said transmitters, means actuated by the movements of said cars for changing the circuits for their respective transmitters whereby any transmitter be utilized when its car is moving downward for sending a down signal to all of the cars moving toward the transmitter from above or when its car is moving upward for sending an up signal to all of the cars moving toward said transmitter from below and means at each transmitter to indicate which of said signals it will send.

67. In combination with a plurality of elevator cars, a plurality of station signal transmitters for each car, :ircuits for said transmitters, means actuated. by the move mento't said cars for changing the circuits for their respective transmitters whereby any transmitter may be utilized. when its car is moving downward for sending a down signal to all of the cars moving toward the transmitter from above or when its car is moving upward and for sending an up sig nal to all of the cars moving toward said transmitter from below and means at each transmitter to indicate which of. said signals it will send.

68. In combination with a plurality of elevator cars, a signal. in each car, a sta tion signal transmitter con'iprising a single push button for each car, circuits between said transmitters and the car signals, means actuated by the movements of the cars in different directions for so changing laid circuits that any push button may be utilized when its car is a down car for energizing a circuit for a down signal and means actuated by any car approaching the station from above after said circuit has been energized for closing said energized circuit to.

actuate its respective car signal; and that any push button may be utilized when its car is an up car for energizing a circuit 5 an up signal and means actuated by any car approaching the station n below after said circuit has been ener d for clo ing a circuit to actuate its respe 69. In combination with a plurality elevator cars, a signal in each car, a. circuit for each car signal, a pluralitv of station signal transmitters each comprising a single push button for each car, circuits theretl oin means actuated by the movement or the car for changing said circuits, whereby the same movement of any of the push buttons may be utilized to control said car signal circuits for a down signal, for the cars r in which are at the upper ends f their runs or are moving downward ti ,vard said push button or an up signal for such cars as are at the lower ends of their runs or are moving upward toward said push button and. means actuated by a downward movement Olii any car as it approaches a station from which a down signal has been sent and by an upward movement of any car as it approaches astation from which an up signal has been sent to complete its respective car signal circuit.

70. In combination with a plurality of elevator cars a station door for each car, a down signal circuit, an up signal circuit a station signal transmitter comprising a single push button. for each car, and arranged to energize said circuits for all of the cars and means actuated by the opening 01 any one of the doors for deenergizing whichever circuit has been energized by a push button.

71'. In combination with a plurility of elevator cars, a station door "for each car a door switch for each door, a down signal circuit running in series through the door switches at said station, an up signal circuit running in series through the door switches at said station and a station signal transmitter comprising a single push button for e ch car, means actuated by the movements of the cars, for so changing said circuits that any transmitter may send a signal through a down signal circuit or through an up signal circuit and means in said door switches for causing the opening of door to break whichever signal circuit a signal has been sent through.

72. In combinaation with plurality of elevator cars, a station door for each car, a down signal circuit, an up signal circuit, a station signal transmitter for each car, each transmitter comprising a single push button. a holding magnet for the down sig il circuit and another holding magnet for the up signal circuit and being arranged to energize either oi? said circuits and means actuated by the opening of a door for deenergizing the holding magnet in whichever circuit has been energized by the tn .sniitter.

73. In combination with a plurality of elevator cars a station. transmi for each or car, each transmitter comprising a single push button, a down holding ina 'nct, and an up holding magnet, circuits for said holding magnets, a down signal circuit, an up signal circuit, means actuated. by the move ments of the cars for putting said transmih ters in condition to send a signal through the down signal circuit or through he up signal circuih a down interlock relay and an up interlock relay at each station, and means actuated. by any transmitter in. con d1 tion to send a down signal for momentaril; closing a circuit through its down holding magnet and for the down interlock relay,

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said down interlock relay being arranged to maintain said. circuit and being provided with means for closing and maintaining the circuits through the down holding magnet of all other transmitters at its station which are in condition to send a down signal.

T l. In combination. with a plurality or elevator cars, a station transmitter for each car, signal circuits therefor, each transmit ter comprising a single push button being arranged to n'iomentarily close a circuit for a down signal or for an up signal, a down interlock relay in the down signal circuit, and an up signal interlock relay in the up signal circuit, said relays being provided. with means arranged to maintain the circuit momentarily closed through it by a transmitter.

75. In combination with a plurality of elevator cars, a door for each car at each station, a station transmitter for each car, signal circuits therefor, each transmitter comprising a single push button. and being arranged to momentarily close a circuit for a down signal or for an up signal through one or the other of said signal circuits, a down interlock relay in the down signal circuit, and an up interlock relay in the up signal circuit, said relays being pr vided with means arranged to maintain the circuit momentarily closed through them by a transmitter; and means actuated by the opening of any of said doors for releasing which ever of said interlock relays is maintaining a circuit to break said circuit.

76. in combination with a plurality of elevator cars, a station. door for each car, a down signal circuit, an up signal circuit, a station transmitter for each car, each transmitter comprising a single push button, a holding magnet for the down signal circuit and another holding magnet for the up nal circuit and being arranged to energize either of said circuits, an interlock relay for each signal circuit, and means actuated by the opening of the door for decnergizing the interlock relay in whichever circuit has been energized by the transmitter to thereby deenergize all holding magnets which have been actuated by the transmitters for sending a like signal.

77. In combination with a plurality of elevator cars, a station door for each car, a signal in each car, circuits for said car signals,

.- a down signal wire, an up signal wire, a

door switch for each door, said signal wires passing in series through said door switch. an interlock relay in each of said signal wires, a direction switch for each car arranged to be actuated by the movement of its car, and arranged to connect one or the other of said signal wires for each car with a source of electrical energy and a push button for each at arranged. to energize a circuit from whichever of said signal wires is connected.

headset with the source of electrical energy and to control said car signal circuits, the door switch being arranged to be actuated by the opening of the door to deenergize the inter lock relay in whichever signal circuit has been. energized by the push button and to de energize all holding magnets which have been energized by the push buttons for a similar signal.

78. In combination with a plurality of elevator cars, a station door for each car, a door switch for each door, a signal in each car, astation signal transmitter for each. car, each transmitter comprising a pair of holding magnets, a pair oi? interlock relays and circuits between each transmitter and the car signals through said holding magnets, interlock relays and door switches, means actuated by the movements of the car in diil'erent directions for causing the s: me movement of the respective transmitters to energize a circuit for one direction oi car movement and to energize another circuit for the opposite direction of car movement, and means actuated by the movement of the car in the direction for which a car signal circuit has been energized to complete said circuit for its signal, said door switches being arranged to be actuated by the opening of a door to de'energize whichever interlock relay has been energized by the transmitter to break its circuit and the circuits of all the holding magnets which have been energized by the transmitters for a similar signal.

79. In combination with a plurality oi elevator cars, a plurality of station doors for each elevator car, a door switch for each door, a plurality of station signal trans1nitters for each car, each of said transmitters comprisin a pair of holding magnets, circuits for said transmitters, means actuated by the movement of each car for changing the circuits oi? its transmitters whereby the same movement of the signal transmitters may be utilized when their car is moving downward for sending a down signal to all of the cars which are moving downward toward said transmitter, or may be utilized when their car is moving upward for sending an up signal to all of the cars which are moving upward. toward said transmitter, a pair of interlock relays at each station, and means actuated by the opening of a door at the station from which a. signal has been sent for deenergizing the interlock relay at said station in whichever ct said circuits has been utilized for sending the signal to br ak said circuit and to dciinergize each holding magnet at said station which has been ener gized for sending a similar signal.

80. In combiiuttion with a plurality of ele- 'vator cars, plurality of station doors for each car, a door switch for each door, a push button at each station for each car, each push button comprising a down holding magnet .llO

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