US1655288A - Control system - Google Patents

Description

Jan. 3, 1928. l1,655,288

D. PEccERlLLo CONTROL SYSTEM Jan. 3, 1928.

D. PECCERILLO CONTROL SYSTEM Filed Jan. 31. 1927 3 Sheets-Sheet 3 Patented Jan. 3, 1928.

UNITED STATES DOMINICK PECCERILLO, OF NEW HAVEN, CONNECTICUT.

CONTROL SYSTEM..

Application Iled January 31, 1927. Serial No. 164,899.

lMy 4invention relatos to motoncontrol systems, and particularly to that class of control systems which are employed in connection with elevators, hoists, and similar 6 apparatus. The obje-ct of .my invention. is toprovide a control system in which an au tomatic leveling-device may be cut intov and out of. action by means of a manuallyoperable master control-switch which l mountedin the car for; overning its operation, whereby the additionalfelfortand loss of time, incident .to the manipulation vof separate means',.is avoided. With this gen eral object in view, my inventonconsists in a controlsystem characterized by'having a master-control-.switch for controllingl .the ordinary movements of the .carwhicln in one positiorn; will divert av control-current through an automatic leveling-switch operable by the movement ofthe car, and when in another position Willrender the said leveling-'switch inelfective by causing a control-current to flow through an'independent v channel, -wherebyboth the normal control and theautomatic leveling. bea-ecomplished bv means of. a singlehandle.

My invention jfurtlier consist a control ,system characterized as above and having .l

certain other details of construction and 3 Combinations of pa-rtsas will be hereinafter describedl and particularly recited in the claims.

I am aware that control systems have been proposed in which the car is automatically leveled by means of an automatic levelingswitch which is rendered effective-or ineffective by means of a manually-operable second switch separate Aand distinct from the inaster-control'switch and` usually cut into 40 and out of play by the movements ofadoor.

Such control systems, however, are not only mechanically and .electrically complex, but

in some respects are futile andoccasion-oonsiderable loss of time AAto the passengers.

Thus, if the action of the leveling-device is dependent upon the movement of the door,

it .very often happens that the passengersl leave and enter the car the'insta-nt that the .door isvopened and before the leveling-.dem vvive .has liadtime to perform itsunction.-` f

Under my invention, as will hereinafter appear, vthe leveling-device isf brought into play h v merely movingthemaster-controlswitch so as to -breakthe normal control-- 5 circuits. The leveling-device thus has ample wlienthee vcar is travelinglin the down di-` the position in which it disonnects the normal, controlcircuits andin which it has placed the" car, which has vstopped slightly Abelow the, floor-level, under the control of the automatic leveling-swit^h, 'which will immediately function to move the car inI the upV direction to bring'it level with the floor;

.Figfc is a corresponding view, the parts fbeing in the positions due to'them afterthe automatic leveling-switch hasleveled the car; and i Higifi' is. av-ievv,correspondirrfrto Fig. 1 but showing a'differert form which ,a nont'rol system constructed in accordance w'ithmy invention may assume.

-In Figs.. 1,2`and 3 of the drawings, I have shownmy improved control system associated with an automatic .stop-mechav:nrsmand circuiti'offthe type ,shown in my copending application, filed January 21,

1926, Serial No. 82,748,and patentedFebruary 8, 1927,.No..`1,616,821 in which the -drivingnnotorconsists `-of an armature 10 and a eld-magnetfwinding 11, which latter is operatively conneted'to a. positive lino conductor `V12 and to a negative line-conductor `1'3 in ,the .usual manner. .A resistor 111 is interposed in the circuit through the armature during the startingT period. This resistor is cut out of the armature-circuit shortly after the start of the motor by a slow-acting automatcffswitch 15,?also in the usual'mannerj* The currentjs sent through-the armature 10in one direction, as for instance to'cause 1the motor't'o drivethe carupward, by an automatic'sw'itch 1,6 having double contacts` asshoyvn, and opera-ted by whatl .shall call thefupfcontrol solenoid 17. .Current is also sent to-gthe armature but in theopposite direction by,.anx automatic switch 18v having douljilecontactsasshovvn` and operated by a solenoid .19, .which I shall designate the i.dov vn-contrc'il solenoid. One terminal. of

each ofthe solenoids 17 :and 19is connected by a conductor 20 to thefn'egative line-con ductor 13. The opposite terminal of the Llp-control solenoid 17 is connected by a con duetor 21 to theup-control Contact 22 of the majteicontrol-switch 23, which is mounted in the elevator car, generally designated by the numeral 24, and moving,r in a Sha'lftway 25. The remaining terminal of the downcontrol solenoid 19 is connected by a con ductor 26 to the down-control contact 27 ot the master-control-switch 23. The conduc tor 21 of the 11p-control solenoid17 is also connected by means 'of a conductor 28 to an up-control'contact`29 of -an auto mati'e levelv ingswitch 3 0 Carried bythe car, the inner down-control Contact 31 of t'he 'switch being connected by a conductor 32 to the conductor-2620i the downcontrol solenoid 19.

The'automa'tic leveling-switch above vre- `ferred to,comprises a lever 33 pivotally mounted'in a clip, 3ft and carrying. at its v innerwend a 'c ontactf adapted to alternat'elyfngage either ofthe contacts 29 and 3l'afore$aid,f,and 'carrying at its outer end La roller' .3.6. whichsiadaptdto .C0-ect', with laefefrie's of leveling-cams 37, one of 'which'.is located: near eachoor-level. Each of these ,ja"1"n's o'nly one of which is shown) is formed With'jffnfetral 38 and an tip-control step 391 The contact' 'of the switch-lever 33.215 normally .heldn engagemenbwith .d'o'yvirc'ont'rol ""lntgiclt1 1Qby`means of a .SP'I'Ig'BBai 'f TIeCIi'I'J'BLtvliQh motints the pivotal'lever 33, igconnected by a conductor 40 lto a con- :tact 11', otlthe vmaeter-coritrol-Esvvitch, which v lattei cl'rt'a't i`s' 'adapted tobe electrically .cbiltl zreferred to l is .l coned'iiii' my, co-fp endingf' application above res'cri tion 'other than to that it Ais inten' edA toetfectrthe ftit-oriratic stoppage llof 'the' car .under .certainlonfditions', 'as is' outlined 4in 'the' tvvo 'succeeding' pa`ragraphs, and

omprisee a leyer 50. p ivoted inl a clip 51and at` it's l ltjyvf'r end a'fontact 52 4adapt- 'dt "engage theiuxiliary 'Contact 48 'afore gailubgt normallyI heldin engagement with titer 'end ofa the lever 5:0 tisfprovided Wi' aroller 55 adapted to ,engage a cam 56 al), 'the car movesin the shaftWay'Q.

'a complementary' contact `2by in Fig. 2, so as to cause theswitch-blade 13 to connect the downcontrol contact 27 with the central-contact of the mastercontrol'switch. In this position of the controlnhandle, the automatic Stop-switch 49 is placed'y in series with the maeter-control .switch so that the control-current is forced to-pass through the automatic stopswit-ch on its way to the down-control solenoid 19. In this position of. the handle 46,'tl1e` path ot the control-current.would be as ollows: from the main-line conductor 12 through the conductor 59, clip 51', lever 50, contacts 52 and 53, conductors 71, contacts 70, switchlade 43, contact 27, conductor 26, and through the' down-control solenoid 19. Now,`nhen in its downward travel with the car, the roller 55 of thc'op-switch 49 strikes the cam56, the lever 50 Will 'be rockedw'ith the effect of separating the contacts 52 and 53 and .so automatically "breaking:r the control-Circoit` 'tothe down-control solenoid and'hence stopfthe car. i c 'Simi larly, if the car' is traveling upward' 'and if it is desired` to make 'an automatic stop, the handle 416"offthefvmaster-control switch .is moved so as" to' `cause thef switchblade 43 to connect theup-coiitrol contact`- 22 andthe central-contactO,'sothzrt here again" t o the iup-control 'Solenoid v17.' the roller strikes the 'cam 56, the control-current twill: be automatically broken 'a' above'g'an'd 'the upward travel of 'the car stop'ped. Y The positive main-'line condctrt 12eitends to the niais'ter-control-svit'ch'24"aforesaid, where it is connected to tivo conta-ctsl and with vhich,ihojveverf, t-l''e'v'iliels'ht invention is not'conterr'iedfl s'hlo'rtconductor ing ini'themdowrn direction andthat-'lthleo'lacrator fvl'ishes to stop*atfthetloor-leiiel' 610, this he may dofby moving'thbontrolgl'ever from the position in' which it'is'isliorvn in full lines, in to the'p'osition ifwhi'ohfLit-is shown by vbroken lines in Fig. 1:,This'Tnox'r-- ment 'ofthe lever '4f/twill dicohnect the direct control-'circuit and will couple the'lcvelingswitch' -3() and automatic. Stolilti'itclr49 in series,\vit.h eachother and withfthe":contacts 41 and -42 of the inastercontrobsu'itch, whereby, when the switches 30 andfl19 are `actuated aszwill be shortly described, the lCur- 'rent from the main line-conduetorwill be.

compelled to pass through theconductor 59, clip 51, lever 50, Contact contact-arm 4S, conductor 47, contactylQ, switch-blade 43, Contact 41, conductor 40, lclip 34, lever 33,

and Contact. 35, before it can' energize either of the solenoids 17 or 19, as may bc required to effect the raising or lowering)Y oi the car, dependent upon whether it has stopped below or above the desired floor-level. It the car has stopped below the floor-level, the control-current will continue its flow from a contact 35 through t-he contact 29, conductors 2S and 2l to the lip-control solenoid 17. On the other hand, if the car has stopped above the fioorlevel, the control-current will continue its How from the contact 35 through the Contact 31, conductors 32 and 26 to the downcontrol solenoid 19.

With the mastencontrol v#witch in the position'shown by broken lines in Fig. l and by full lines in Fig. 2, the continued downward travel of the car, due to its momentum, from the position shown in Fig. l int-o the position shown in Fig. 2.(in which latter it has moved slightly below the floor-level 60), will causel the roller atthe outer end of the'lever to engagfethe cam 56', with the efect of movingthe'contact 52 into engagement with the auxiliary Contact 48. This downward movement'of the/car will also cause the roller 3G at.the 'outer end-of the lever 33 to ride up upon .-'thestep 39 of the' leveling-cam 37, whereby the upcontrol solenoid 17 will be energized for moving thecar in the up directionbythe" current fiowing to it from the main line-conductor 12, through the V'.islir't conductor 59,`clip 51, lever 50, contact 52', aii'xli'ar'y contact 48, conductor'47, Contact 42, switch-blade43, contact 41, conductor 40, clip 34, lever 33,;c'Ont'act`35, up-control contact 29, Aconductor 28, andf conductor 21. This energieationI of the up-c'on'trol solenoid will causeftlhecar to move upward until the roller36f, atftlie outerl end offthelcver 33, rides oil ofthe `step 390i the cam 37 and onto the neutral step 38 thereof, whereby the supply of current to the 11p-control solenoid is automatically shut off. The parts will now occupy the position shown in Fig. 3.

Conversely, should'the ca'r have been travcling -in the up direction and overridden the floor at which itis desired to stop, the contact 35 would be held in engagement with the contact 31 by the spring 33a so as to energize thedown-control solenoid for-moving the car downward until the roller 3G, at the outer end ofthe lever 33 engages the cam 37 and rides up upon its neutral step 38, with the effect of moving the contact 35 out ot engagement with the contact 31 and into its neutral position shown in Fig. 3, .so that current can reach neither of thetwo solenoids 17 or 19 by this route.

To start from the floor, the operator merely moves the switch-lever 44 so that its blade 43 connects either the contacts 27 and 58 or the contacts 22 and 57, dependent upon the desired direction of travel, so that the control-current may pass through direct paths,

independent of the action ofeither off the automatic switches 30 or 49. Thus, if it is desired to cause the car to move in the up direction, the switch-blade 43 is lnoved so as to connect the contacts 22 and 57 so that the control-cm'rent. will flow from the main-line conductor 12 through the contact 57, blade 415, contact 22` conductor 21 to the lip-control solenoid 1T. lf, on the other hand, it is desired to cause the car to move in the down l `contart 48, which latter isconneted to the automatic leveling-switch' as shown. f

It' the operator desires 'to cause' the'car to stop automatically at any'given floor, when the car is traveling in' the 'down ldiretti-1in, for instance, he may accomplish this by moving the handle 4G ofJ the mastercontrol-switch into its .intermediate tion, in which it 'i sindicated by' brken lines in Fig. 2, before 'movi'vrigfiitfintoits central position, as shown- 'by'fullliiies in` the same ligure, so as t'o place the contacts 52 and 53' of the automatic stop-Switch 'ijn series with the master-control-switch, with the. result that the control-'eurrent"will be broken and the canstopped when the cam 56 moves the contact v52 away f rmpthe'c'ontact as hereinbetore described. A

The control system shown- F ig. 4 is 'on'e having the same characteristics as4 that shown in the preceding figures, but is arranged to function independentlymof the automatic stop-switch, whi'chis the feature of my co-pendingV application'v above referred to, and not necessarily combined 'with my present invention (though preferably). lu this arrangement of parts, the lever 33 is provided with a pin Gl embraced by a U-shaped centering-spring 62 which tends to maintain the contact at the lower end et the lever in a neutral position between the contacts 29 and 3 1. The. roller 35 at the outer end of the lever 33 enters a cam-groove. G3 in one` face of a hloclc 64. The vcunigroove 63 aforesaid comprises a down-control reach G5 which is adapted to'ho'ld the contact 35 in engagement with the down control contact 3l, a neutral reachSG, and an lip-control reach G7, which' is adapted to hold the contacV in engagement with the nii-control Contact. 29'.l Under this arrangement of parts, the Contact 42 is'directly contuo nected tothe main line-conductor 12, as shown.

Should the car be brought to a stop slightly belowthe Hoor-level, the roller 3G of thelever 33 will be located in the upcontrol reac l1 .67 of the block 64, with the effect of holding .the Contact 35 in engagement witl1.the Contact 29, so that current Will reach .the up-oontrol solenoid 17 by tlowing from the main line-conductor 12 through the Contact 42,--switch-blade 43, Contact 4l, conductor 410,'-clip 3-'l-, lever. 33, contact 35, Contact 29, conductor 28, andrconductor 21, with'the efect of causing .the car to move upwardv .until the roller 36 Aengages the neutral reach 66 of the block 6ft, at which time the contact 35 will be,.located ,mid- .-waybet-ween the two contacts 29 and 31.

the event that thecar should override thetloor at'. whichitis lintended 'to stop When-traveling in the up .direction, the down-controlreach 65v of.. the cam-groove 63 .will' 'se1ve to hold the lever 33 so that its contait is in engagement .with contact` 31, with-.the effectthat the down-.control Solenoid will beenergized so as to cause the car-.t0 lmove downward until the roller 36 Aengages theA neutral-reach 66 ol" the calnl.

. I wishltolcall attention to the tact that in. the control systems shown in Figs. 1 to 3V inclusive and in that shown :in Fig. 4, the master-control-switch possesses the tapacity of connecting itself in series with the auto- :i5

tis rendered effective or inelfective by the matic 'leveling-switch 33, so'that the latter former. A

From the foregoing it will be seen that ,under my invention it isonly necessaryto manipulate the 1naster-control-switch by means of its single. handlefl to cause the (rar to operate in vits normal Way in either the up or down ..direction, or .t-o bring the automatic control-switch into action. By my invention,therefore, theaut-omatic con- .trol-switchv isenabled to come into action so closely after the shutting olf of the main .control-circuits that the car is brought into alignment with the desired floor-level before, in the normal course of events, the operator of the carhas had time to open a door to permit passengers to eitherleave or enter the car.

I claim:

1. A control system, includingacar; a motor therefor; a plurality of control-circuits for the said motor; an automatic leveling-switch operable by the movement of the car; a master-control-switch carried by the said car and manually operable by means of a single handle, which when in one posivtion will cause a motor-control current to flow through the said automatic levelingcontrol solenoidand a down-control solenoid and havingtwo channels 4.ofhfiovg one of said channels-@including lbpthfthe .said master-control-switch a'id 'the automatic leveling-switch, andthe other Echannelfbeing independent of the said. leveling-Switch.;

3. A control system, includin ,a1 feaI "",fa motortherefor; an automatic lev 'ng.- i operableby the movi'nentof thecar; ond automatic switch.A also operablefbyuth'e vmovement of vthe i car; a rnastercntrol-. vswitch carried by the said carjand manually operable byl a single hand1e,."whi:ch Vwhen' `1n one osition will place 'thesaid automatic levehng-switch'and the saidsecond automaticswiteh in series with tliesaid mastercontrol-switch and when ina'nother position will render j the said automatic svi/,itchesL etective vby Causing @the control-current to of the.saidautomatic'switclaeyl 4. A control system, 'including -a car; a motor therefor; a plurality' of control-foirflow through a channel which is independent lcuits for the said motor; an automatic leveling-switch'operable by lthe movement of the car; a master-control-switch carried byfthe said carand manually .operablel 'by lmeans of a singlel'handle', which when'inojne'p'osltion will cause al"mo tor-control current.t o flow throughthe said'automatic levelingswitch, and when in,` another position will render the said automatic leveling-switch ineffective .by causing a'control-current to fiow throuofh a channel which is independent of the said leveling-switch` 5. A controlsystem, including a cari; a motor therefor; an automatic leveling-switch operable by Ithe movement of the car; a master-control-switch carried by the said car and manually operable by a single handle, and va control-circuit governed by the said master-control-switch and including an upcontrol Ysolenoid and a down-control solenoid and having two channels ot `flow, one of said channels including .both the said mastercontrol-switch and the automatic leveling-switclnfand the other channel being independent of the said leveling-switch,

6. A control system, includimY a car, a motor'therefor, an automatic levelling-switch operable by the movement of the car, an

automatic stop-switch also operable by the movement of the car, a master-controlswitch carried by the said car and manually operable by a single handle which, when in one position, will cause a control-current to flow through the said automatic levelingswitch, so as to be controllable thereby, and when in a second position, to cause a controlcurrent to flow through the said automatic stop-switch, so as to be controllable thereby, and when in a third position to render both of the said automatic switches ineiective by a control-current to flow through a channel which is independent of the said automatic switches.

7. A control system, including a car, a motor therefor, an automatic levelingswitch operable by the movement of the car and including a movable Contact and two stationary contacts, a spring for holding the said movable contact in a neutral position between the said stationary contacts, and a cam for positively moving the said movable Contact into engagement with either of the said stationary contacts, a mastercontrol-switch carried by the said car and manually operable by a single handle, which, when in one position, will cause a motorcontrol-current to flow through the said automatic leveling-switch and when in another position will render the said automatic leveling-switch ineffective by causing a control-current to flow through a channel which is independent of the said levelingswitch.

In testimony whereof, I have signed this specification.

DOMINICK PECCERILLO.

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