US2558622A

US2558622A - Selector mechanism floor unit

Info

Publication number: US2558622A
Application number: US622464A
Authority: US
Inventors: Mignocchi Serge; Mignocchi Louis
Original assignee: SERGE ELEVATOR CO Inc
Current assignee: SERGE ELEVATOR CO Inc
Priority date: 1945-10-15
Filing date: 1945-10-15
Publication date: 1951-06-26
Anticipated expiration: 1968-06-26

Description

J1me 1951 s. MIGNOCCHI ETAL 2,553,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 1 I if INVENTORS SERGE M/GNOCCH/ LOU/S M/GNOCCH/ BY S I m ATTORNEY June 1951 s. MIGNOCCHI ET AL 2,553,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 2 INVENTORS SERGE M/GNOCCH/ LOU/S M/GNOCCH/ June 6, 1951 s. MIGNOCCHI ET AL 2,558,622

SELECTOR MECHANISM FLOOR UNIT Filed Oct. 15, 1945 4 Sheets-Sheet 3 nil Hlu HERE". 5'' :g

giaiiiiliil i lg 2::22 I-laga IN V EN TORS SERGE M/G/VOCCH/ LOU/S M/G/VOC CH/ ATTORNEY Patented June 26, 1951 SELECTOR MECHANISM FLOOR UNIT Serge Mignocchi and Louis Mignocchi, New York N. Y., assignors to Serge Elevator (30., Inc.,

Bronx, N. Y.

Application October 15, 1945, Serial No. 622,464

17 Claims. 1

The present invention relates to a floor selector utilized in automatic elevator systems, such as the push-button type.

In elevator systems of this type, in order to automatically bring the car to a selected floor in response to a call impressed with a push-button in the hall or in the car, certain mechanism is used for automatically closing and opening the electrical circuits which control the operation of the motors used in the system. This mechanism includes direction switches, which determine the direction of motion of the elevator car in response to a call, a relay that corresponds to each floor and switches that are opened and closed by the car movement to control the floor relay and the car stopping relay. These elements and the mechanical means that operate them and which is directly connected to the car movement are together known as the floor selector.

Heretofore these elements were mounted on a panel board in groups corresponding to each other and not to the particular floor for which they operated the car and were usually therefor so separated from each other that floor selectors of the prior art occupied relatively considerable space. Further, with prior art floor selectors, since all the elements of the selector corresponding to a particular floor were not grouped together in the same space as a unit, they did not lend themselves to ready and easy inspection for repair or replacement should the selector for that particular door, for some reason be out of order.

The present invention therefore contemplates an integral unit for each floor that has mounted on it all the switches and contacts that correspond to each floor and which integral unit is so arranged that the elements thereof will be operated in proper sequence by the car movement.

The present invention contemplates the provision of a floor unit that has mounted on it'a floor relay and the contacts therefor, the up and down direction switches, the switch contacts which control operation of the floor relay and the stopping relay and a cam that is so constructed and arranged that the switches are opened and closed in proper sequence so that the car will properly respond to the signal impressed on the hall or the car button and place the system in condition to stop the car when it reaches the floor to which it has been called.

There is thus provided a floor selector unit in which all of the elements of the automatic system corresponding to each floor are grouped together in a comparatively small space so that the selector mechanism is small and compact lends itself to ready and easy inspection.

As is well known, the distance between each floor may vary or the position of the follower that operates the floor selector may change somewhat during operation so that it will not accurately correspond to the position reached by the elevator at the floor corresponding to the se lector unit so that the car may be stopped above or below the floor level, a circumstance that it is desired to avoid.

The present invention therefore also contemplates the provision in a directly connected floor of a readily adjustable means for each selector unit whereby the position thereof relative to the position of the car in the hatchway may be adjusted in the event that they become misadjusted, so that the car will be stopped when it is positioned at the floor corresponding to the selector unit.

The present invention still further contemplates the provision of a non-rigid resilient connection between the selector unit and the follower that is driven by the movement of the car and " so that no strain is placed on the connection as the follower travels past the connection thereby eliminating probability of resulting damage to the connecting means.

The present invention still further contemplates the provision of a floor unit for a selector mechanism that is standard in all its parts and may be utilized without change to various types of buildings and various types of automatic elevator systems.

These, other and further objects, advantages and uses of the present invention will be clear from the description which follows and the .rawings related thereto in which:

Fig. 1 is a front elevation of a selector mechanism, according to the present invention, the front cover being broken away to show the arrangement of the floor unit comprising it and the traveller positioned at a terminal;

Fig. 2 is a partial front elevation thereof, the follower position at the other terminal;

Fig. 3 is a section on the line 22 of Fig. 1;

Fig. 4 is a lateral section across the traveler or cross head H! of Fig. 3;

Fig. 5 is a partial plan view of Fig. 2;

Fig. 6 is a side elevation of a floor selector unit according to my invention, viewed from the side shown in Fig. 2;

Fig. 7 is a section on the line tA-AA of Fig. 4;

Fig. 8 is a partial section looking up, across the selector;

Fig. 9 is a section on the line -5 of Fig. 4;

Fig. 10 is a top front perspective view of the cam means that operates the switches of the selector unit;

Fig. 11 is a side elevation of the floor selector unit viewed from the right of Fig. 1 and showing the cam in one position of its operation;

Fig. 12 is a partial side elevation of the selector unit cam in another position of its operation;

Fig. 13 is a section on the line 9-9 of Fig. 8;

Fig. 14 is a side elevation of the selector cam unit in still another position of its operation;

Fig. 15 is a section on the line H-H of Fig. 10;

Fig. 16 is a section on the line i2-i2 of Fig. 7;

Fig. 17 is a rear elevation of the operative cam showing an adjusted position of the arms in broken lines;

Fig. 18 is a schematic outline of one cam nose;

Fig. 19 is a schematic outline of the other cam nose;

Fig. 20 is a partial schematic wiring diagram, just sufficient for an understanding of the invention.

Referring now to the drawings and particularly to Figs. 1, 2, 3 and 5, a floor unit [0, one for each floor served by the elevator system, in the illus tration six floors and a basement, is arranged in the housing [2 and secured thereby by any satis factory means, provision being made therefore as by the openings 14 in the member 16, which will receive the required supporting crews (Fig. 6).

The traveler or cross-head 18, which drives the operating cam 29, of each unit and which cams are mounted for oscillation on the shaft 22 in each selector unit 19, is driven by the worm shaft 24.

The cam 20 and shaft 22 are tensioned in operative position by means of the spring 23 expanding between the washers and 2?.

The shaft 24 is journaled in suitable bearings mounted in the side walls 25 and 28 and is operatively driven through the gear 32 which is connected directly to the elevator car in any suitable manner so that the shaft 24 will move in accordance with the movement of the elevator car.

The traveler i8 is provided with internai threads (not shown), which mesh with the worm threads on the shaft 24 so that rotation of the latter will cause operative reciprocation of the traveler between the selector unit corresponding to one terminal floor, such as the basement of the building, and the selector unit 3'6, corresponding to the other terminal floor, such as the top or sixth floor of the building (Figs. 1 and 2).

Movement of the traveler iii from the one terminal position illustrated in Fig. l at the unit 34 to its other terminal position at the unit 3'6 (Fig. 2) and corresponding to the movement of the elevator car brings the follower 38 extendin therefrom into engagement with the resilient arm 42 mounted on a cam 20 positioned in its path of movement.

When the car is positioned at a floor corresponding to a unit iii, the follower 38 rests between the

arms

46 and 42 of that floor unit. This is illustrated in Fig. 1, when the car is at the basement floor and Fig. 2 when the car is at the sixth or top floor of the building.

In these positions, the arms 49 and 42 are in a substantially straight vertical position, whereat as will be described, the up and down direction switches are opened by the selector unit and the stopping coil switch has been closed to stop the car.

As the follower 38 engages the arm 42 and continues its movement, each cam 29, the arm 42 of which is engaged, will be rotated from the position illustrated in Figs. 1, 5 and 11, whereat they point to the traveler that is positioned below them, into the position illustrated in Figs. 2 and 14, whereatin the latter position the follower 38 has cleared the arm 49 and moved past it, the

arms

48 and 42 now pointing to the traveler posi tioned above them.

As we shall in more detail describe, when the traveler is below a unit the up directional switches i. for the floors above it will have been closed and the down directional switches opened by the cam movement operated by the movement of the follower 33 against the arm 42 and when the tray-- eler is above a unit, the down directional switches for the floors above it will have been closed and the up directional switches opened by the cam movement operated by the movement of the fol lower 38 against the arm 49.

As will be also explained in further detail this movement of the cam 20 about the shaft 22 also operates the switch contacts (to which we wili later refer) of the floor selector which control the starting and the stopping of the car in response to the registration of a call.

Movement of the traveler, under the influence of the car as it drives the shaft 24, from its upper limit position at the unit 36, brings the follower 38 into engagement with the other resilient arm 49 to move the cam, the arm of which is engaged about its shaft 22 in the opposite direction to again cause the switch contacts to close and open for the purposes that we shall further describe.

It will thus be seen that movement of the traveler I3, by the elevator car, oscillates each cam 20 as it moves therepast in either direction, movement from right to left of Fig. 1 corresponding to movement of the elevator car from the basement of the building to the top floor thereof and movement from left to right of Fig. 1 corresponding to movement of the elevator car from the top of the building, to the basement.

In order to insure that the traveler l8 operates in a trul horizontal position so that it will be relieved of strain and insure unvarying engagement of the

arms

42 and 42 by the follower 38, we mount the traveler H! on the angle support 44, so that the traveler l8 reciprocably slides thereacross between the right and left of Fig. 1,

The follower l 8 is provided with the upstanding elements H and 2|, in the space between which the member [9 is seated, the elements l! and 19 being integral and connected at the underside of the follower.

The member I!) is pivoted to the follow-er l8 by means of the pin 23 so that it may be raised in rotation in a counter clockwise direction as viewed in Fig. 2 and lowered, when rotated in a clockwise direction as viewed in Fig. 2, by the spring 48.

The angle 46 is secured to the underside of the follower l8, which connected the elements I! and 2!. The horizontal leg of the angle 46 is spaced from the underside of the follower I8. In the space formed thereby, the horizontal leg of the stationary angle 44 is seated.

This construction thereby prevents any. rotation or displacement of the follower in a counter clockwise or clockwise direction about the shaft 24, as viewed in Fi .2, under the influence of the movement of the traveler I8 by the worm gear 32.

The angle support 44 may be secured in any suitable manner in the housing I and the angle 46 secured in any suitable manner to the follower I8. Thus, it will be recognized that the angle 46 reoiprocates as a unit with the follower on the stationary angle support 44.

The traveler I8, which moves on the angle 44 thereacross, is resiliently held thereon by means of the tension spring 48, one end of which is secured to the head 50 mounted on the internally threaded collar 52 extending from the traveler and which meshes with the thereads 32. The other end of the spring 48 is secured to the pin 54 which is secured to the member I9 and which pin extends down through the elongated opening 25 in the integral connection between the elements I1 damage to the traveler and the

arms

40 and 42 in the event of such displacement. The traveler I8 is thereby permitted to pass over a thus misplaced selector unit 34 because the member I9 may be raised up against the tension of the spring 48 when the follower 38 engages an arm of the misplaced selector unit.

- On return of the traveler I8 in the opposite direction of its movement, the misplaced selector unit is now in the proper up or down elevator position corresponding to that of all the other selector units.

Referring now particularly to Figs. 6 and 9, each unit .I0, is preferably built from a bracket 56 on one face 58 of which the floor relay 60 is mounted as by any satisfactory means. Separating the face 58 from the relay coil 60, we provide the insulating member 62 on one side of which is secured one lead 64 (Fig. 11) and on the other side of which is secured one lead 66 (Fig. 6), to which leads reference will be further made when the schematic wiring diagram is described. At this point, it is necessary to point out only that the lead 64 is free at one end so that it will be connected to one side L2 of the line.

Extending down through the opening 68 in the horizontal face I0 of the bracket 58, we provide the carrying member "on which the floor relay armature I4 is mounted. Riveted to the armature 14, We provide the insulated switch member I6 through the opening I8 of which the

movable contact elements

82 and 84 extend. The

membres

82 and 84 are connected in parallel by the lead 85 and are secured to one side of the line LI by the lead 81.

When the circuit through the relay coil 60 is closed by a call or car button for a particular floor, as an example say the top or sixth floor as will hereafter be explained, the armature 14 of the unit corresponding thereto, say 36, is attracted against the tension of the spring 86 (one end of which is secured to the lug 88 on the face I0 and the other end of which is secured to the armature carrying member 72) to bring the terminal 88 on the element 82 into engagement with the terminal 9I on the member 92 and to v bring the terminal on the element 84 into engagement with the terminal 94 on the member 96 to close the respective switches which they comprise.

When the armature I4 is released, it is returned to normal position by the spring 86 on the pivot formed by the face I0 on which the armature carrying member 12 is mounted to thereby disengage the contact 90 from the contact 94 and the contact 88 from the contact 9| and thus open the respective switches formed by these contacts.

Referring now to Fig. 1, in this position, the traveler l8 and follower 38 have been moved to the lowermost position whereat the elevator carhas been stopped at the basement floor so that all of the cams 20 for each selector unit above the basement floor have been rotated into the positions illustrated, pointing to the traveler, whereat the down direction switches have been opened and all the up direction switches closed. We shall now describe how this is accomplished by the selector unit embodying the present invention.

Referring to Fig. 10, each cam 20 on one face 96 thereof is provided with a nose 98 which is engaged by the cam follower I00 riveted to the resilient arm I 02. The cam follower I 00 comprises a roller I04 which rides on the face of the cam nose 98 against which it is held by the resilient arm I02 (see Fig. 8 and Fig. 5). In Fig. 3 one of the arms of the starting and stopping control switches in rear of the directional switches now being described is broken away for clarity in depicting the structure, as is done in Fig. 6.

Intermediate the resilient arm I02, we provide on each face thereof a contact I08 and a contact I08 and on the somewhat resilient arms III) and II! the contacts I I4 and I I6. The contacts IIlIi and I I4 constitute an up-direction switch and the contacts I08 and H6 a down-direction switch. When the cam 20 is oscillated so that the cam follower is positioned at the lowest part II 8 of the cam nose 98, the tension of the arm I02 forces the cam follower thereagainst to bring the terminal I06 against the terminal H4 and thus close the up direction switch (see Figs. 10 and 19).

This is shown in the position of the cams as illustrated in Fig. 1 and will occur when the cams are rotated in a clockwise direction as viewed in Fig. 1 corresponding to the down travel of the elevator car. Thus when the car is traveling down the cams of all selector units corresponding to floors above the car will have been rotated into the position illustrated in Fig. 1 since the traveler I8 has moved past the unit corresponding thereto.

However when the cams are rotated in a counter-clockwise direction corresponding to the up travel of the elevator car the cams 20 will be rotated in the opposite direction, to assume the position illustrated in Fig. 2. As the cam moves into this position, the high point H9 of the cam nose 98 will be brought against the follower I00 to thereby move the arm I02 toward the arm I I2 to bring the terminal I08 into engagement with the terminal I I6 and the terminal I06 away from the terminal II4 to close the down directional switch and open the up directional switch.

When, however, the car reaches a particular floor, the follower 38 is positioned between the

arms

40 and 42, which are then in an upright position with the traveler therebetween of the floor corresponding to that unit. At this time the follower I00 is at an intermediate position l 2 l of dwell on the nose 98 Whereat contact H16, is disengaged from contact H4 and contact 38 is disengaged from contact H6. Thus in this neutral position, when the car is at a floor corresponding tothat selector unit, both up and down directional switches are opened so that if a call is registered for that floor no circuit will be made through either the up or down directional switch f r that floor but for calls registered above or below the car, proper circuits will be made through the up or down directional switches of the corresponding floor selector unit.

That is, if the car has been moved below a floor the up directional switch corresponding to that floor will have been closed so that a call will be registered for that floor by closing the circult through the up directional switch corresponding to. the floor but if the car is above the floor at which the call is registered the circuit will be made through the down directional switch corresponding to the floor.

When the car is positioned at the floor, the hall or car button of which is operated, the car will not be moved in either direction since neither the up coil or down coil may be energized because the contacts 495 and 18 are positioned out of contact with the corresponding

contacts H

2 and 5 l6, the follower Hi being positioned at the intermediate or neutral point of dwell I21. It will of course be understood that impressing the hall or car button efiects the opening of the car doors by conventional means and electrical circuits which are not shown since they form no part of the present invention and are well known.

The bases of the members or reeds 84, 95, I92,

HQ and H2 are insulated from each other, as

by the fiber insulation iii, and are mounted on the member if; as by the elongated screw H5 extending through the member and the end plate Ill. The member or reed N32 has the lead HS secured thereto, the member or reed H8 having the lead I28 secured thereto and the member or reed H2 having the lead E22 secured thereto (Fig. 13). The lead H8 is connected to the member or reed 8d and the member 96 is connected to the lead 9! (Fig. 6)

The two members or

reeds

92 and 36 are connected in parallel by means of the jump wire 55. Since the floor units are separate individual structures, the other ends of the leads I28 and V22 are free so that they may be connected to the respective upv and down coil terminals.

In order to understand the operation of the floor unit with respect to starting and stopping oi the car in response to a call registered by the hall or car buttons, reference will now be made more particularly to Figs. 11 to 16 in conjunction, with the schematic wiring diagram illustrated in Fig. 29 with respect to the schematic wiring diagram, attention is called to the fact that only two circuit lines Li and L2 are shown and only'such elements of a conventional elevator system as are necessary for an understanding :of our invention; switch contacts being shown in the open or closed position assumed by them when the car is at rest at a floor. The wiring diagram for the elements corresponding to but a single floor are shownin Fig. 15 since it is merely illustrative of the operation of a sllector mechanism supplied with a floor unit according to our invention.

Upon closing either the hall button E-ZS or the car button 133 for any iioor to which the car i to re p nd, a i cuit i mad ro gh the floo el y i cor esp nd n to that QQ through the ordinar l clos c m a xmo ntcd n t floor n t (whic sha be d sc ibed on. which t ela co l or that o r also mounted.-

In der to in se uence o en and lose t ese t rmin a h c is m e in the she we arrange on each cam 29 01 a floor unit I", e no e E5 on the other s de of he f ce 96 o the 2a an th pera io f wh ch we shall now describe.

' n the pes cn illustrated inv Fi ref rin i t e es ipt o hi h l s. s ecifically however to Figs. '10 to 16 and 18, the iollowfil wh ch al o. prefe bl ha th r lle -42, or a cam x t on th it e lear m or a em fleet is nqsiticned at the lowest point hid of the earn nose I32 on one side thereof (the down side). The follower (I is mounted on the resilient member or reed {46 so that the roller {42 is always held against th face of the cam 29 and in this position pushes the terminal hi8 into contact with the terminal 55.8 .on the member I52. On the other side of the member 32 is mounted another terminal E54 which is pushed into contact with the terminal 1.55 on the member E58. The resiliency of the member 545 brings the terminal Hill .on the other face thereof out of engagement with the terminal 182 on the member or reed I53. T -:3 i h o io s um d by th c m f9? the units above the lowermost floor the Switches formed by the contacts 53 and i511 and the contacts I5 3 and 155 are closed but the switch formed by the contacts :52 and lid is open. It should at this point also be recognized that the follower I06 is at the lowest point 11-5 on the cam nose 88 to concurrently close the switch (H4 and N15) to the up coil and open the switch (898 and US) to the down coil, all of which occurs in those floor units of the floors above which the car is positioned.

Thus a circuit will be made from Ll through a hall button 29 or car button 13!}, the lead I (one end ofwhich is connected to the mem: bar 158 and the other end of which is iree for connection in the elevator system) the switches formed by the contacts I55 and $54, terminals 15.3 and i 13, the floor relay 6;] to the line L2 (Fig. 20). The floor relay is thus energiaed {to close the

floor relay contacts

88 and 9| and 90 and 9Q.

It will be understood that Fig. 11 illustrates the position of the cam 28 assumed by it for all fioor units above the ear, in the illustrgation Fig. l for all units above unit 34%; Fig. 12 illustrates the position of the cam assumed by ;it for the floor unit corresponding to the floor at which the cam positioned, in the illustration Fig. l the unit 3 and Fig. 14 illustrates the position assumed by the cam for all floor units below the car, in the illustration Fig.2, the units below the unit 36.

The members or reeds M6, I52, I53 and 16.4 are mounted on the element l6 between it and the plate E69 by means of the set screw Ill and are separated from each other by any suitable insulating means H3.

The member or reed M6 is connected to the member or reed 8'2 (and so the terminal 9!) ;by means of the lead liil and the member or reed Hi l by means of the lead [68, which is free at its other end so that it may be connected in the elevator system and thus connect the stop.- ping coil ll!) into the circuit, as will be further described.

It is understood that circuits and the means for starting the elevator car in the proper direction, upon registering a call through the hall or car buttons, need not be shown as my floor selector unit may be used with any kind of elevator system, such as conventional automatic push-button types.

Upon registering a call with a hall or car button at a particular floor, as stated the floor relay coil will become energized to attract the armature 14 and close the switches formed by the

contacts

88 and 9| and 90 and 94. This is accomplished since the movement of the car tothe basement floor (in the illustration) has rotated the cam 20 of every floor unit above the basement floor in a clockwise direction by engagement of each arm 40 by the follower 38 as the traveler I8 is moved from left to right in Fig. 1 to close the switches connecting the hall or car buttons to the floor relay coil for the corresponding floor.

This forms a holding circuit from LI through lead 01, jumper wire 85,

terminals

88 and 9|, lead I10 terminals I48 and I60, through the floor relay coil 60 to L2. Concurrently a circuit is made from LI through lead 91,

terminals

90 and 94, lead I I8, terminals I06 and I I4, lead I20, through the up coil I12 to the other side of the line L2, thus closing'the up direction circuit for any floor above the car position, in the illustration given (Fig. 1) above the basement floor.

Since there are no floors below the basement floor, the floor unit34 for that floor, need not be provided with the contacts I08 and H6, although We prefer to make all units, standard and thus do not distinguish between them.

The cam 26 in the next position of movement as illustrated in Figs. 12 and 13 (when the car is at a floor), as it is rotated by movement of the follower 38, pushes the member or reed I48 away from the member I52, which latter inturn leaves the member I58 to bring the terminal I54 out of engagement with the terminal I56. Thus the circuit from the hall or car buttons is first broken so that the floor relay coil 60 as the car reaches the floor corresponding to that unit I0 will not continue to be energized except through its holding circuit formed by the terminals I48 and I50, as heretofore described.

Further rotation of the cam by the follower 38 as the elevator moves in the up direction, further, pushes the follower I to move the member or reed I46 away from the member or reed I52 to open the switch formed by the terminals I and I48 and close the switch formed by the terminals I and I62 leading to the stopping coil I18.

The switches formed by the terminals I62 and IE0 and the terminals I48 and I50 are of the conventional make before break type. That is, the

circuit is made through the stopping coil before the circuit is broken through the floor relay coil as otherwise the stopping coil could not become energized.

The circuit through the floor relay coil is broken and the circuit through the stopping coil is made when the high point I14 of the nose I32 is reached. This occurs when the follower 38 is positioned between the arms 40 and. 42, as illustrated by the unit 34 in Fig. 1 and the unit 36 in Fig. 2, which happens when the car is at the floor corresponding to the particular unit.

Should the floor relay coil of a unit I0 be energized by the registration of a call thereat, as previously described, as the car reaches the corresponding floor, a circuit will be madethrough the stopping coil from LI, terminals I60 and I62 (which are alive since the floor relay circuit is not yet broken), the lead I63 and the coil to L2 to close the stopping coil contacts I14. This forms a holding circuit for the stopping coil from LI, through contacts I14, the timer coil contacts I16 through the stopping coil I16 to L2. Thus, if the floor relay of a unit is energized, when the car reaches the floor corresponding thereto, it will be stopped by the operation of my unit and the circuit elements which it controls through the stopping coil.

A parallel circuit is made from LI, the contacts I14, through a conventional timer coil I18 to L2. Therefore, after the lapse of a selected time, the timer coil contacts I16 are opened to break the circuit through the stopping coil I10 and place the system in condition for its further operation by de -energizing the stopping coil I10.

If a call is not registered at a particular floor, the car will continue to move therepast since the stopping coil will not be energized, bringing the follower 38 into engagement with the arm 42 to rotate the cam 26 into the position illustrated in Fig. 2 by all the units, except that 36 for the top floor. This is shown in Figs. 14 and 15.

In this position the follower I42 is moved beyond the high point I14 of the cam to the low point I60 thereof (Fig. 18), whereat the member or reed I46 moves away from the member or reed I 64, to open the stopping coil circuit for that floor, and toward the member and reed I52 to push it toward the member or reed I 58 and thus close the circuit from the hall or car button through the floor relay coil for that unit that has been passed and thus place the unit in condition to have the coil 64. therefor energized for registration of a call.

Concurrently the follower E60 reaches the high point H9 of the cam nose 98 (Fig. 19) to open the coil I12 and close the down coil I82. Thus when the car passes a floor unit going in the up direction, it will again spontaneously close the switch formed by the contacts H38 and H6 to the down coil and simultaneously open the circuit to the up coil and concurrently place the unit in condition to have a call registered at that floor by placing the floor relay coil therefor in condition to be energized.

It should be noted that, if the hall or car button is held in, even after the car starts to move other calls, may nevertheless be registered since the circuit is first broken through the hall or car buttons immediately after the car reaches the floor when terminal I54 is moved away from terminal I56.

In operation, should the car be at the base ment floor as illustrated in Fig. 1 and a call be registered at the top floor, movement up of the car is initiated by conventional means but in the up direction since the contacts I I4 and I 06 in the up coil I12 circuit for the unit corresponding to the top floor have been closed by our novel unit construction, the floor relay coil of the unit 36 corresponding to the top floor is energized and the car stop ed when the follower 38 is positioned as illustrated in Fig. 2. Should the floor relay coil of any floor unit below it be energized, the car will stop at that floor first, since the member or reed I46 for that floor unit is moved toward the member or reed 164 to close the circuit through the stopping coil therefor.

As each cam 26 is rotated into the position illustrated in Fig. 2 (car moving up) the circuit to the up coil is opened and. the circuit to the down 11 coil closed. Thus if the car is above a floor it must move downward to a floor below and if the car is below a floor it must move upward to a fioor above the car since the directional circuits are spontaneously placed in operative condition by the car movement in either direction.

It should be noted here that, if desired, since there will be no calls registered for floors above the top floor, the switch comprised by the terminals Hi3 and lid leading to the up coil, fo the top floor unit may be dispensed with, although for reasons of convenience in standardizing the units, as stated with reference to the bottom floor unit, we preferably do not distinguish between it and any other floor unit.

Should the car, for example, be at the top floor, as illustrated in Fig. 2 and a call registered at a floor below, for example at the lowermost floor, each cam will be moved in a clockwise direction by engagement first of the arm 42 and then the arm 49. This causes the follower Hill to be moved from the low point ace of the nose 532 (on th up side) through the high point l'l i neutral or intermediate, the car at the floor, to the low point I44 (on the down side) and the follower 00 to be moved from the high point l 59 of the nose 98 (on the up side) through the intermediate or neutral point lZl, the car at the floor, to the low point i i8 (on the down side) It should be noted again, that when the car moves from a lower floor to a higher floor, the cam 29 is rotated in a counter-clockwise direction to reverse the movement of the followers Hit and H353.

Through unforeseen circumstances the car may be stopped above or below a floor because the arms M3 o 52 may have changed their position relative to the position of the car relative to the floor landing. A fraction of an inch displacement of an arm may mean that the car will be stopped inches above or below the corresponding floor landing. In order to provide means for easily adjusting the position of the arms 42 and 4G with respect to the follower 33, I preferably provide the construction illustrated in Fig. 1'7.

The arms 49 and 12 are made from an integral 2i! and each

arm

56 and 32, we provide the threaded element i5 8 on one end of which is threadedly mounted the knurled set screw I99, the arm 48 being positioned between it and the cam 26, and on the other end of which the knurled set screw I92 is thread-edly mounted, the arm 42 being positioned between it and the cam Zil.

Each arm is tensioned against its corresponding adjusting set screw so that movement of the set screw will selectively force the corresponding arm toward the cam 2i! or permit it to move away therefrom against the set screw, as illustrated by the broken lines of Fig. 1'7. Thus the arm 4%} or 42 may be easily adjusted in position to cause the elevator to stop at the desired point in the hatchway without the necessity of taking the floor selector unit apart or electrically disconnecting it from the system.

It will now be apparent that we have provided a floor selector unit in which the switches required to determine the direction of car movement, initiating starting and stopping of the car,

registration of a call for a floor and the floor relay coil are grouped for a given floor in a single unitary structure that will be standard for all buildings.

We have only shown such details of a conventional automatic elevator system as are required for an understanding of our invention since they can be supplied by those skilled in the art to whom this description is directed. It will of course be understood that our invention may be applied to either alternating or direct current installations and to installation of more than one speed.

While we have shown in some detail a specific embodiment of our invention, we do not intend to be limited thereto, but desire to claim our invention as broadly as the appended claims and the prior art will permit.

We claim:

1; A floor unit for a selector mechanism comprising a supporting structure, a relay mounted on said structure having an armature movable toward and away from the coil thereof, a pair of normally open switches connected in parallel and closed by the armature upon energizing the coil, a cam mounted for movement on the structure, an up direction and a down direction switch controlled by the cam to open the down direction switch and concurrently close the up direction switch at one position of the cam movement and to open the up direction switch and concurrently close the down direction switch at another position of the cam movement, said cam concurrently opening both up and down direction switches in an intermediate position of the cam movement, said up and down direction switches connected in parallel to one of said pair of normally open switches, a second pair of normally closed switches connected to the coil and to the other of said normally open switches and a last mentioned normally open switch for connection to a stopping coil, said first mentioned normally open switches closed upon energizing said coil, said normally closed switches opened by said cam and the last mentioned normally open switch closed by said cam at said intermediate position of the cam movement.

2. In a floor unit for a selector mechanism, a supporting structure, a coil mounted on said structure, an armature normally resiliently held away from said coil, a pair of switches controlled by said armature to be closed thereby upon energizing the coil, a cam movable from a first position to a second position and back to the first position, an up direction and a down direction switch, a nose on the cam for operating the up and down direction switches and having a low point at one of said positions, a neutral point intermediate said positions and a high point at the other of said positions said nose at the low point opening one of said up and down direction switches and concurrently closing the other of said up and down switches and at the high point closing the first mentioned of said up and down direction switches and concurrently opening the second mentioned of said up and down switches, said up and down switches connected in parallel to one of the pair of switches controlled by said armature, a group of switches comprising a pair of normally closed switches and a normally open switch, a second nose on said cam for controlling said group of switches, said second nose having a low point at one of said cam positions whereat the closed switches and the open switch of said group are in normal position, a high point at said intermediate position whereat the normally closed 13' switches of the groups are open and the open switch of the group is .closed and a second low point at the other of said cam positions whereat the closed switches and the open switch of said group are in normal position.

3. The floor unit of claim 2, said first normally closed switch of said group being opened by the cam before the second normally closed switch of said group is opened.

4. The floor unit of claim 2, said group of switches being of the make before break type.

5. In a floor unit for a selector mechanism, an up direction and a down direction switch, a group of switches comprising a normally closed switch and a normally open switch and a cam movable between two positions for concurrently operating the switches, the up direction switch being open and the down direction switch being closed at one position of the cam movement and the up direction switch being closed and the down direction switch being open at the other position of the cam movement, said group of switches being in normal condition at both positions of cam movement and said up and down direction switches being open at an intermediate position of cam movement, the said normally closed switch of said group being open and the normally open switch of said group being closed at said intermediate position of cam movement.

6. In a floor unit for a selector mechanism, a supporting structure, a cam, a shaft on the structure and carrying the cam, cam noses on one face of the cam and separated by the shaft, the profile of one cam nose having a low point, a high point and a neutral point intermediate the low and high point, the profile of the other cam nosehaving a high point intermediate two low points, said neutral point on the first cam nose and said high point on the second cam nose being radially opposite each other and said high point on said first cam nose being radially opposite a low point on said second nose and said low point on said first nose being radially opposite the other low point on said second cam nose, an up and a down direction switch having a common member, said common member engaged by the first nose to open and close the up and down switches upon movement of the cam on the shaft, and a pair of switches having a second common member, said second common member engaging said second nose to open and close each one of said pair of switches.

7. In a floor unit, a supporting structure, a coil, an armature mounted in the structure for attraction of the armature upon energizing the coil, a pair of normally opened switches controlled by the armature and closed upon energizing the coil, one side of said switch for connection to one side of a circuit, a, second pair of switches, one of said switches being normally opened and the other of said switches being normally closed, said switches having a common member, one side of said switches connected to the coil and the other side of said switches for connection in the system, the common member being connected to one of the switches controlled by the armature, an up and down switch having a common member, said common member of the up and down switch being connected to the other side of said other switch controlled by the armature and a cam rotatedly mounted on the structure for opening and closing each of the said first pair of switches upon movement of the common member therefor and concurrently in selective sequence opening and clos- 14 ing the up and down switch upon movement of the common member therefore.

8. In a floor unit, a cam, a group of three switches connected in series, the first pair of switches of said group having a common movable member, the following pair of switches of said group having a second movable common member, and a group of two switches having a movable common member, the first two switches of said group of three switches being normally closed and the third switch of said group of three switches being normally open, said cam moving the movable common members of said group of three switches to in sequence open the first two switches and close the third switch, said third switch being closed before said second switch is open and said cam opening both switches of said group of two switches upon closing the third switch of said group of three switches and one switch of said group of two switches being opened and the other of said group of two switches being closed upon opening the third switch of said group of three switches.

9. In a fioor unit, a cam movable between two positions, a group of switches connected in series and having a common movable member, said cam, upon movement in one direction to an intermediate position, moving the common member to open one switch of said group and close another switch of said group, said cam at both positions moving the common member to close the first switch of said group and open the second switch of said group and a second group of switches having a second common movable member, movement of the second common member by the cam at one position closing one of said second group of switches and concurrently opening the second of said group of switches and at the other position opening the first switch of said second group of switches and concurrently closing the second of said second group of switches, both of said switches of said second group of switches being opened at the intermediate position of the cam by movement of the said second common member.

10. In a fioor unit for a selector mechanism having a relay mounted thereon, a pair of switches for energizing the relay to register a call at the floor unit and for energizing a coil to initiate stopping of an elevator car, said switches having yieldable arms, one arm being common to both switches and a cam mounted for oscillation between two positions and engaging the common arm to in sequence open and close said switches, said first mentioned switch being closed and said second mentioned switch being opened at both positions by movement of the common arm by the cam and said second mentioned switch being closed and the first mentioned switch being opened at an intermediate position by movement of the common arm by the cam.

11. In a floor selector unit for a selector mechanism having a relay mounted thereon, an up direction and a down direction switch, said switches having yieldable arms, one arm being common to both switches, said common arm being connected in a circuit including said relay and a cam mounted for oscillation between two positions and engaging the common arm, one of said up and down switches being closed and the other of said up and down switches being opened at one position by movement of the common arm by the cam and the first of said up and down switches being opened and the second of said up and down switches being closed at the other of said positions by movement of the common arm by the cam, both of said up and down switches being opened at an intermediate position by movement of the common arm by the cam.

12. In a floor selector unit for a selector mechanism having a relay mounted thereon, a call registering switch, a switch for initiating the stopping of a car, an up direction switch, a down direction switch and means, movable between two positions, for opening and closing said switches, said registering switch being closed at both positions and opened at an intermediate position by said: means, said initiating switch being opened at both positions and closed at the intermediate position by said means, and one of said direction switches being closed and the other direction switch being opened by the means at one position, the other direction switch being closed and the first direction switch being opened by the means at the other position, both direction switches being opened by the means at the intermediate position.

13. In a floor unit for a selector mechanism; a floor relay coil; a stopping coil; a plurality of electrodes forming a group of switches having a common member, the common member movable between a first and second electrode of said electrodes and being connected to the floor relay coil, said first electrode, common member and relay coil in a firstcircuit and said second electrode, common member and floor relay coil in a 0 second circuit, a third electrode of said electrodes against the second electrode, a fourth electrode of said electrodes coupled to said stopping coil; said stopping coil arranged in a third circuit having. contacts therein controlled by the stoprection and in a down direction for serving a plurality of floors, said elevator system having coils forcausing movement of the car in the up and the down direction'a plurality of fioor units, each one of said floor units corresponding to a floor,

a plurality of said floor units, each unit removably mounted in the selector mechanism to form a side by side group thereof, a traveler reciprocably movable from and between each end of the group of units, a cam rotatably mounted in each unit, an arm extending up from each side of the cam in a unit in the path of movement of the traveler across the selector mechanism in position to be engaged by the traveler upon movement thereof across the selector mechanism to thereby rotate the cam, each unit having a down direction switch for connection to a coil for cansing movement of an elevator car in the down direction and an up direction switch for connection to a car for causing movement of the elevator car in the up direction, each down direction switch of each floor unit being open when the up direction switch of that unit is closed and each up direction switch of each unit being open when the down direction unit of that switch is closed, a floor relay coil for initiating movement of the elevator car; each unit having a; switch connected to the floor relay coil, said switch connected to the floor relay being closed upon oscillation of the cam by engagement of the arm by the traveler. J

15. The selector mechanism of claim 14, said arms being resilient to permit movement therepast of the traveler.

16. The selector mechanism of claim 14' and including a member extending through the arms on each side of a cam on a unit and a means on the member in engagement with each cam for selectively adjustingthe position of each arm with respect to the cam to thereby select the position whereat the arm is engaged by the traveler. Y

17'. A floor selector for an automatic elevator system serving a building having a plurality of floors and said system having a car reciprocable between a first terminal floor and a second terminal floor and comprising a housing, a traveler mounted in the housing for reciprocation thereacrcss corresponding to movement of the car between the first terminal floor and the second terminal floor, a plurality of cams spaced in a line of cams in the housing in the path of reciprocation of the traveler, each cam corresponding to a floor of the building, a first of said plurality of cams at a first end of said line of cams corresponding to the first terminal floor and a second of said plurality of cams at a second end of said line of cams corresponding to the second terminal floor, a pivot securing each cam in'the housing, anarm secured on each side of each cam and in the path of reciprocationof the traveler whereby the cam is moved counterclockwise on the pivot upon engagement of an arm and movement of the traveler from the first end toward the second end of the line of cams and in clockwise direction on the pivot upon engagement of the other arm and movement of the traveler from the second end toward the first end of the line of cams, a group of switches to be selectively and sequentially opened and closed upon movement of the cam by the traveler, a pair of switches to be selectively opened and closed by movement of said cam in sequence with the opening and closing of said group of switches, and including a member extending between and through the arms on each cam and an adjusting means for selectively positioning each arm on a cam relatively to the said cam.

SERGE MIGNOCCI-II. LOUIS MIGNOCCl-II.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATEJI'IKE:

Number Name Date 593,121 Quarin Feb. 2, 1897 1,669,509 Eyrse May 15, 1928 1,983,794 Fitzsimmons Dec. 11, 1934 2,020,733 Moehler Nov. 12, 1935 2,279,220 Baum Apr. 7, 1942 2,318,761 Curtis May 11, 1943 2,319,946 Osborne et al May 25, 1943 2,322,563 Bruno June 22, 1943 2,431,929 Goff Dec. 2, 1947