US1580363A - Elevator - Google Patents

Description

Patented Aprl 13, 1926.

BES-T ;wlLA

PATENT -FF1CE.

MIL'IION BABUOH, LOS ANGELES, CALIFOBNIA, ASSIGNOR T0 WESTI'NGHOUSE' ELEC'IBIC & KANUFACTURING COMPANY, A COBEORATION OF PENNSYLVANIA.

ELEVATOB.

Applicatipn flled October 10, 1821. Serie). N0. 508,869.

T0 all w/zom z't mqy conerfl:

Be it known tlmt I, M1LTON BARUCH, 21 citizcn cf tl1e Unificl States, residing ab Los .-\ngeles, in t-he county of Los Angeles and.

State 01 Californiiz, have inventad a new and nseful'lm] rmement in Elevators, of which the'following is a specificati0n- My in vention relates to elevators and it may be a lvanlageously applied to passenger eevators ope'ratix'xg in buildings, although, 0f comse, being equally applicable to freight elevators and hoists of various descriptions.

In tl1e lollow ving specification the applicaiio'n of my invention' to a Passenger elevator will be describ ed 'lhe princi al dbjectof the invention is to provide, an elevgxtor wh'.h is so constructed 'thnt it will automaticgxlly 3stume a p0sition in which the floor of tl 1rewahis level Svith the floor of the buildi ng ilifflle event tha& the car is stopped wil:h fl1efioot-of the can'out of level w1th the-floor of the bu'ilding, P'rovided such stopping occnrs within'a certain disinnen 0f the levcl Position, this distmice cm 5 0ithei side' 0f tl1e level position being hereinafcndesignatul as the leveling zone..

A fnrtl1er objeCl; of the ini*ention is t0 provide means f013' accomplis'lxing the firsh.

nzuned object qnite indepehdently of tl1e op- 0 emtor 0f the eleimtor. A still furt-henobject 0f tlx'e inxenfz'ion is 10 provide means by which tlie aboveobjects may be=atlained witlxut the use of sWitches o1 cmns carried b v the cm o'r situafted in the' hatchway and \i'i th a. high of accuracy 3 still furtherbbject of'ihe invention is to provide means Whereby the leveling mechanisin is lxeld out of engagement atiall times except a't tl1e time or just before l;l1e time tlmt tlxe cx u comes to rest.

A still further object of tl1'e invention is t0 provigle means for accolnplishing tlxe above objeet-s Wlll(.ll will l e extremely flexible in installafion-so flmlg'ihese nxgmis can be applied '(0 eiistin i elevntors or-nnbe readily m0 li liecl to snit nlmot any comlition met within 'pmct'ice.

Furth'er objects and edvantages will be mgde evident hereinaft-r-r.

plied.

Fig. 2 is an elevation on an enlarged senle showmg the leveling fingers am]. a leveling roller. y

Fig. 3 is a front elevation shoning the level1ng roller in'its snpport.

Fig. 4= is a partial section on an enlmged SCaleon a plane representecl by the line- 4-4 cf Fig. 1.

Fig. 5 is a sectio n 011 a plane reprcsente l l y the line 55 0f Fig. 2.

Fig. 6 is a diagram of c0nnection.

In tl1e form of the invention shown I provide a cm 11 wl1ieh is suspended by cables 10 which pass up to suitable counter-weiglxts and hoistin 9; mechnnism, not shown. Securcd to tlxe top of the ca1 11 is n flexible tapc 12 whih asses over sheuvcs 13, 14, 15 ancl 16, being ben uttaclxed to tl1e bottom O'f the cm: The member 12 is prefembly formed of thimsteel altlmnglx any othep material lxaving sufiicient strength. flexi 15 bility aml permanence mnjr be nsecl. 'llxe cm 11 passes up mnl down in a lmtchway serving floors 17, 18 an l 19.

Sedured 011 tl1e flexible member 12 2.re a 'series of projections 20. one of fhese prejeetions' being provided for e'ach of the floors 17, 18 und-.19. The pr0jections 20 consist 'of a member 21 on'wl1zgtmay be termed t-he back of tl1e member 12 an. a member 22 on the face 0f .the member 12, these members being' secnred togetl1er through holes or slots in l-he member 12 by. menns ofbolts 23. Carried 011 u pln25 -in eaehof the lnembexs 22 i's a. toller 26.

Euch 0f the'sheaves 13,14, 15 und 16 has a rim shaped as in Fig. 4, which is =Provided with a groove 27 to allow tlxe members 21 to pass 'readily therearound. 1 ita.ted at some convenicnt point are a pair of leveling finge rs 31 and 32. Rollers 30 tur ning about stafiionary pins are loeated opposite lzhe figers 31 ancl 32 for' the purpose ofholding the voller 26 in contact with shown through the cables 10.

BES? AVA1LABLE COP\ these fingers as shown in Fig. 2. The fingers 31 and 32 are calrriegd 011 pivots 33 'ancl are provided With projectins between which a tension spnng 34 is stretched, this spring tending to pull the extensions 35 against stops36. A contact 37 is carried by laut insulated from auch 0f the members 35, this contacl: touching andmaking electric al connection with a contact 39 whenever the member 35 is pushed away from the stop 36 against the action of. the spring 34. The pivots 33 are fiXed in n. hox 40 which is carried on an arm 41 pivoted at 42 to sorne stationary position of the build- .ing structure or mcchanism; A hell crank 43 forming an extension of the arm 41 is connected to the plunger 44 0f a magnet having a windin 45.

The methocl 0 connection can best be unclerstood from Fig. 6 in which is the armature of the. elevator -motor which is mechanically connected to raise and 'lower the car by rneans of suitable' mechanism not The armi1- ture 50 is magnlatically linkeclwith a field 51 excited fr0m a source not shown. The

'I armature lzads 52 and 53 of tl1e motor armature 50 are connected to wires 54 and 55. The wire 54 is connected to 'contacts 56 ancl 57 ancl the wire i's connected t6 contacts 58 and 59. The contacts 56 and 58 form par t of an up cor'1tactor 60 having a coil lthe contactor 60 bein'g so constructed that the contacts 56 and-58 are Closed whenever the winding 61 isnergized. In the same way the contacts 57 and 59 forxn part -0f a down contactor 62 having a winding 63. The Contacts 58 and 57 areoonnecte'd to a negative wire 65. In series -with the gvire 65 isra resistance 66 whichmn.y be cut in und out of circuitby means of contactors 67 which may be eithex: automatic'ally enetgized orwhich ma be cdntrolled by a car switch 70 in accor ance with standard practice by means, nol: shown.

The motor 50 01 somelportionhf the mechanism drivenbythe motoris providc d witl1 a brnke opbratcd by magnel; 71.- The contacts 37 and 39 operxted by the finger 3].

am for convenience designated as the up contact 72 und the simila1 fingerso1iexiated by l:l1e arm 32are designated as the down contact 73. The car switch 70: is provided witlr.nn operating handle 74 which may Opcrafic an arm 75 making contact with.the.

sogxncnts 76, 7 78 79, 80 an l 81. y The opcmtmg handle 74 may he also attached to other fornis of control'snch, fr. examyile,

2\S pnslx lmtfong auch ns'is nsekl in automatic 0lvv::lmt The contact 81 ls nonnecteql llxrongzlr 21 wirr with a wir-e 91 Connecl'ing tlxe'winding 61 h) .the (vnnl'n'nfi 72. The other l'enninnl 0l' ihn win ling 61 is connected tn 3 uommon wiru 92 whivh is connrrcted t0 0ne tennihal. 01 'the-ninding 63, tl1e wire 92 fthe contacts57 and59 nre opened.

is also connected t0 one terniinul 0f The magnet 45, the other terxninal of which is con nectecl through a wird 96 witl1 the segments 77 am] 80. A positive wire 97 is conncctml t0 the segments 78 and 79 und so one sl(le of the contact 72 an l 73 by means 0f wiro 93. The otl1er si(le of the winding 63 is connected through u wire 99 with 0n0 side 0f the contact 73 und through a wire 100 with the segxnent 76.

The mthod of operation is as follows: In the diagram 0f Fig. 6, the operat'rng handle 74 is shown in its ml 0r neutral position, this being the position into wl1ich the handle is throwh when it is (lesirerl' t0 stop the cm. In the event that it is desire l t0 start the car upwardly, the handle 74 is rotated in a clock-wise direction, first connecb ing the contacts 77 and 78 togother which connects the wire 96 with the positive side '0f the circuit. This energizes the magnet 45 which pnlls upwardlyon the core 44 and draws the b0x 40 und the fingers 31 and 32 0ut of the patl1 of the rllers 26. This is done for the purpose of Prevcntlng the rollers 26 from striking aguinst the fingers 31 and 32 while moving ab a high specd an(l thus causing undue wear to the fi'ngers 21ml what is more important n very di sagreeable clicklng noise.- If the handle 74 is rotatccl further in a clockwise (lirecti0n, the contact 76 is also connectecl t0 the cont-act 78 thus con'niecting the wire 100 with .tl1e positive downwardly. The resistance 66 may noxwbc automatically cutout '0f circuitby the conlVhenevr it is desired tost qp, .the handle 74 is moved back to the ofi:' position 215 shown in Fig. 6, the winding 63 is de-energized fi%nd he brake magnet 7lbeing in series with both of the windings 61 and63, the'brake is applied 'tactors 67 in accordance with Standard prawhenever. 'both of these windinfgs arekleenergized. The application of the brake stops the Gar. The moving of the hamll74 the neutralpositionopens the circu1t tn the contct 77 und de-energizes thg ma'gnct 45 thus 'allwing the fingers 31 and 32 to drop int0 the position 'shown in Fig. 2 in whiclfPosition they are engaged by--one 'of the roller 26. 1n tl1e' cvent th alz tlxe car stops wit-h the roller 26ln posiklion showr1 in Figz'. 2 'neitllhr 0f the'-fingers 31- m mve lrway frmn the sfops 36 an l neither" .the contzwls 72 m 73 am closed 'eozceptperhaps momentmily as the cnr comos to rest.

This c'entral posi-tion of the-r0llers 26 norm- BEST AVAlLABL'E COP\ said fingers imperative at all times excep t when sa1(l operating handle is in the ofl position; and means independent oi said operating handle by which the aetnation of one ol said fingers causes Sald contro'ller t0 assumc a position t0 move tlxe rar dovvn und tlw nein-- ation 0f the other finger Causes said 001.- troller t0 assume a osition (0 movelsaid car up.

12. In an electrlc elevator, the combination of a car; an electric mo'tor for actnatdng said car; a controllcr connected to operatej said motor in a forward 01' in a reverse d1rectxon; an operatmg handle carr1ed 1-n szud car by whmh an operator can set sa1d controller to operate said nlotor in either direction; a pair of fingers; .a strip 'o f flexible flat material attached to seid ear and passing in proximity to seid fingers; aseries of projections. on said flexible-strip each so constituted und plaeed as to actnate one of said fingers when the .ca'r stops a little above; a predetermined point and to actuate the other finger iw hei1 the car stops a little below a predeterm1ned 'point; means for rendering said fingen; in-

operative als all times except when said operating handle is in Ehe ofl" position; and means independent cf said operating handle by which the actuati on of one of Said fingers causes said controller to assume .a position to move the car down and the actuation cf the other finger canses sajd controller to assume a osition to move 'said car up.

13. In an electric celvator, the combination of: a car; an electric 'motor for actuating said car; a. controllerco nnected to operalze said inotor in a forward 'or in a reverse direction; an operating handle arried.in said car by which an operator can Set said controller to operate said motor in either dilection; a palir of fingers; a flexible memher attached to said car; a series 0f Projections 0n said flexible member each so comstituted and placed as to actuate one of said fingers when the car steps a little ahove a predetermined point and to actsuate theother Enger when the car etops a little belowa pfedetermined point; a maggnet con trolled by tne mov eme nt*of 'the operat1ng handle for .drwing said fingers out of ihe path of said projectmns ab all times except when. said .operating handle is in the off o1 neutral posltion and means independent of said 0perating handle by which the nc tnation of oneof said fingers ca nses said controller to 8.ssume a posltion to move the car down an l the actuation 026 the othe1 fingen canses said controller to assnme a position tu 1n0ie said car' 14. In an electric elevator, the combihation of: acar; an electno motor for actuatmg said car; a conliroller eonne cted to operate said motor in a forward er in a reversedh rection; an operat1n'g handle car'r1ed in saui' handle for drawlng said fingers out of the' path of said projections ab all times except when said operating handle is in the ofi o1 neutral osition; and' means independent of said Operating handle by which theactuation of one of said fingers canses said controller to assumea position to move the car down and the actnation of the other finger causes 'said conlsroller to assume a p0sit1on t move said car np.

15. The combination with an elev:ilior cm and an electric motor for actuating the car,

of manually operable means for controlling the mtor, a flexible member attached to said car, and means controlled by seid flexible mcrnber for controlling said motor when said manual'means is inoperatu' e.

16. The combination with an elevator car and an electric motor fo r actuating the car of manually operable means.for controllin the motor, a flexible memb'er attached to sai carand means comprising an electro-responsive switching device controlled by said Y flexibkz member for controlling said inotor Wh'en said manual means is imperative.

17. The combination with' an elevator car and an electric motor for actuating the Gar, of manually operable meaixs :lfor controlling the motor, a flexible member attaehed tq said car, a plurality o'f adjustably mountejd projetztions carried by said member; and

switching mans controlled by said projections for eflecting automatic operations of said mo fior to actuate salid car'-to predetermined pointslof car travel.

18. 'lhe combination with an elevator car 0f manually operable means for controlling the motor, -a flexible menaber attaehed bo said ear, a plnrality of adjust-ably mounted projections carried by said member, and switching 1neans controlled bysaid proji;ctions for eflecting automatic ope'rat1ons of said motor to ixctnate seid 'car snbstantially and an eleetric moto1l for abtuating th e car,

to a selected level independently of said ma-nually opex;able me.ns.

' 19. "Ehe combination with an elevator ca? and an electric motor im: actuating the car of'manually opexahl a meang for controlling the motor, aiplur&yj pi switch 0perating membersactuated i1.:igipo1danee with the car -movement, und electttisponsiYe means conlirolle d hy. said members for cuntrollizjxg said v BEST AV/YLBLE CP\ mean is jn0pera(- 5 of manually operable mcaps for controlling 'the motor, a plurality of cum membe1s actuuted m nccoidance w1th the cm movenxent,

means for co-operating with said members to'control said motor, and means for rentiering said cooperating means ineffective.

In bestimony whe'reof, I hzwe hereunto set my band at Los Angeles, California, this 30th day of September, 1921.

MILTON BARUCH.

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