US985509A - Switch. - Google Patents

Description

E. CARPENTER SWITCH.

umoumn 2111111 MAY 9, 1907.

Patented Feb. 28, 1911.

3 SHEETSSHEET- 1.

ATTOR N EY C. E CARPENTER= SWITCH.

APPLIOATION FILED MAYB, 1907.

985,509. Patenteti Feb. 19H.

8 SEEETS -fZ-HBET 3.

\VITNESSES: INVENTOR @dM UMZ @7262 ATTORNEY .a motor,- and contemplates'in its preferred drawings";'for the purpose of disclosing my -the'form illustrated in f is "a'diagraminati'c-view of a modification of .lfmydevice;

35 having a core-4. The upper en is providedfwith a small] collar having a Q proiection arranged to operate in. a slot '6, formed in a v thereto atailrod- 8,,carrying a lurality of -fidisk .z-inte m die t disk? th .zl fillsal ifi :nations operated by resistancefiout of a motor circuit, I 4

I have' illustratedifnfthe accompanying 'said drawings: Figurel is an elevation of 'oneform of my device,

bottom of the .disk and 'upon the tail rod.

. ,connected with a which-o crates in a suction or das -pot' 14, to =retard the upward. movement of the tail I'Od when the core 4; is attracted. At a point UNITED sTATasaATENT onerous 1 (1 0., 0F MILWAUKEE WISCONSIIL, WISQQ S .pSpepiflcatjon of netters at l, t: "a ncationmea'iray 9,1901. sae aamss 2 Y L 2' 1 To' all ,whpm 'if ma'y concerh: i

' Be it known that I, CHARLES E. CARPEN- fTnR, a citizenof the'United States, residing at New York city, in the county of New Yorkand State of New York, have invented new and .useful Improvements in Switches, of which the following is a full, clear, concise,'and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relatesto improvements in switches, one of the objects thereof being the provision of a single 'electro-responsive'. device foroperating a plurality of switches successively.

My inventionis particularly adapted to switches for" controlling theresistanc'e of" and'23'. All of these contacts preferably able studs, =se'curedto' the base, and the engagement thereof, bythe various disks, changes the=position of the rollers whereby "a new surface is presented. The contact brush 15 is arranged to engage a'pair Ortontacts 24 and 25,- also mounted upon the base 2. 1 r

It will be noted that when the tail rod is .111- its normal or downposition that the distancebetwee'n the contacts 19 and form, the provision-of a plurality of switches tween the- contact 21 and 21 and the switch arranged to be successively closed by meansf member 10, and that-the'distance between the a s g olenoid, f01 cu tinga contacts 22 and 23 and the switch member is greater than the distance between the switch member and 'ts contacts, and that thedistan'ce between the brushes and their respective contacts is" greater "than the distance between the switchr'n'ember 11 and its respective contacts. y this arrangement when the t a il 'r'odis raised-by the-core ;1=,;the switchmemb'er 9 will" engage its-contacts first,- tlie' springsupporting the same, however, permitting; the tail rod to continue to until theswitcli' member 10 engages its contacts -"and sofon until the brushes *15 bridge the contacts and 25. Above the top of thejsolenoid 3 is'mou-nted a switch '26 supported at 27; and arranged to engage contact 28. This switch is arranged to be opened by a projection '29on the upper end of the core 4L when the-core reaches-the upward limit of its travel. Suitable bind- 4 ing posts 36,131, 32, 33, 34,35'and 36 are provided upon the face of the'base 2'by ,which the various circuit "connections of the switch may be made, a In the circuit. arrangement illustrated in Fig. 2, the binding stSO is connectedby a conductor 37 with one terminal ol the rm- "ture 38 of'the'motor 39. The opposite terminalgof the armature 38 is connected with ib nd n'apos .31- Trh bi di g p t 32 s 'qo ed ibi'aq li t r "k w ee t rr m n ret-e. an e e' ii etlt n e terin hjfield'" beingcqn e ed invention, one. embodiment thereof, and 1n Fig. 2 is a diagram- 'atic View of the 'circuit' ar'rangement of F'g. 1, and Fig. 3

In the embodiment of my invention illustrated in 1, upon a suitable panel or base 2, preferably formed ofslate or other insulating material, islniounted a solenoid '3 Y i d, of the core guide plate 7 v 'JThe lower end of the core" has secured" d 11. Eac contact is the tail rod upon spring 12 interposedbetween the a collar 13 secured Theend ofthe tail rod is' piston rod, the iston' of contacts 9, 1 0 an a, 4 p ee? ea m 3 with f 6, i t P t te-ta l; b twe,

ed to'engage a pair of contacts19 and-- isarra'ngedto engagea pair of contacts'22 take/the form of rollers supported onsuit v and the sw tch member 9 is less thanthe distance bellO binding post 35, which is also connected with the positive side 44 of the line. The binding post -32 is connected by conductor 45 with the contact 19, and extending between the contacts 19 and 24 is an armature resistance 46 divided into sect-ions and connected withthe contacts 21, 22' and 24. One terminal of the winding of the solenoid 3 is connected by conductor 46 with the contact28 of the switch 26. Between the switch and the contact 28 is connected a resistance 47. The switch 26 is connected by conductor 48 with the binding post 31. The opposite terminal of the winding of the solenoid 3 is connected by conductor 49 with the binding post 33, which is connected by a a closed .from the positive side 44 of the line,

line. solenoid 3 and the solenoid immediately atthrough conductors 4-3 and 48, across switch 26, by conductor 46, through the winding of the solenoid 3, thence by conductors 49 and 50, across switch 52, and by conductors 53 and 54 to the opposite conductor 55 of the This energizes the winding of the tracts its core, raising the tail rod 8, and as the tail rod rises, the disk 9 bridges the contacts 19 and 20, thereby establishing the motor circuit from the positiveside 44 of the line, by conductors 43 and-40, through the armature 38 of the motor 39, thence by conductors 37 and '56, to the contact 24', through all the resistance 46, across the contact disk 9, and by conductor 54 to the opposite side'55 of the line. The field circuit of the motor is established from conductor 40 through the field 42, and by conductor 41, to conductor 45, thence by way of contacts 19 and 20 and conductor 54, to the.opposite side 55 of the line. The motor thus starts with all the resistance in circuit and as the core of the solenoid continues to raise the tail rod 8, the disk 10 will bridge contacts 20 and 21 to cut out oneseetion of resistance. A continuedupward movement of the tail rod causes the disk 11 to bridge contacts22 and 23 to cut out another section of resistance. and finally contact brush 15 will bridge the contacts 24 and 25, thereby cutting out the last section of the resistance 46, and the motor .will be operating at full speed. When the core 4 of the solenoid 3 reaches the extreme upward limit of its travel, the projection 29 thereof engages the switch 26, opening the same and inserting The contacts 20, 21, 23 and 25' resistance 47 in series with'the winding of the solenoid 3, thereby cutting down the current to prevent over heating the. magnet, as it is well understood that the magnet requires more current to start and raise the 7 tail rod 8, than it does to maintain the same in its-raised position. v

In a lifting solenoid of the construction shown, having a fixed number of'amp'ere turns in the winding thereof, the pull on the 7 plunger would increase as the plunger rises and the magnetic gap 15 closed, and true would tend to increase the speed of'the rise of the plunger rod against the action of the dash-pot.

This difference in pull, however, 30 in the present device is compensated for by the springs on which the various contacts of the tail rod rest, and which as the contacts are successively closed increase the resist-, ance to pull on-the plunger. l In Fig. 3 I have shown a modification of my device wherein -I have dispensed with the dash-pot for regulating the 'upward movement of the core of the solenoid, and in place thereof, I have provided a means for regulating the movement of the core of the solenoid, through the action of the winding of the solenoid. This means is illustrated as a second winding connected across the armature terminals. In this structure the upper winding 5" of the solenoid 3 serves to raise the tail rod to a starting position,

and the lower winding 58 which is connected across the armature terminals, by conductors 59 and 60, serves, as the counter electroemotive force of" the armature increases,

to raise the tail rod to successively close theswitches, In operation when the 'switch 52 is closed. circuit will be established from] the positive side 61 of the line, by conductors 62 and 60, across the switch 52, by conductor 63, across the switch 26, bv conductor 64, through the winding 57 of the solenoid, and thence by conductor 65, to the opposite side 66 of the line. thus being energized, raises the core 4 of the solenoid to its initial position, and the disk 9 bridges the contacts 19 and 20, -there-- by establishing the armature circuit from conductor 62, through the armature 67, by conductor 68, through resistance 46, across the disk 9, and b conductor 65. to the op posite side 66 of the line. The field circuit is established at the same time from the conductor 62, through the field 69, and thence by conductor 70, across the contact 19. and by conductor 65 to the opposite side 66 of the line. The armature thus starts with all resistance in circuit and the wind-- ing 58 is energized by the circuit across the armature terminals extending from one terminal of the armature, byconductor 60, across the switch 52, by conductor, 71, through the winding 58 of the soicnoid 3,

and thence by conductor 59,'to the opposite The winding 57 terminal of the armature 67. As the coun- {ti a eleet etire to ce qttheearmatu eiina iyblifl estri fls'sliffi gi B ,SQlQ ,lQl-d :35,

. increased by the windin 5 8, ;-,*tlie 5 iswitches llli li a d .:ai1. mas ely 15 motor acelerates- In this case also, how- -ever, the springs of the contacts on the tail rod offer an increasing resistance, thereby making the speed at which the plunger of the solenoid rises the same under-all, conditions.

While in Fig.3 I have shown two independent windings, one; placed upon the other, it is obvious that one winding maybe superimposed upon the :other or one sole-' noid spool may be telescoped upon the other,

and ina certain class of work this construction is preferred. It will be further under-. stood that I do not-wish to be limited to the precise construction scribed, but may make various changes therein. For instance, instead of arranging .the coils'to'ass'ist-one another, Imay arran e the same to cooperate in other ways.

aving thus. described my invention what Iclaim as new and desire to secure by Letters Patent is:

1. In a controller for electric motors, the combination with an electro-responsive 'de-.,

vice, aimember movable thereby, a plurality- 40 of. switch members resiliently mounted on. said member,- a plurality of contacts so positioiied 'a'sto be successively bridged-by the switch members upon the movement of the memberf by the electro-responsive device, and'resistances'connected to certain of said jfcontact s to-be short-circuited by said switch members. v I

2. In'aimotor; controller, the combination with a. .movablef h operating" winding therefon-a plurality of switches resiliently mounted on said movable memher, a plurality ofcontacts arranged to be successively-engaged by said switches, a re-; sistance connected to' cert-am of said -con-.-

' springs interposed between said SWltCll memtacts whereby said resistance will be shortcircuited .as the contacts are engaged by -said -switches, and means for controlling "the movement of the movable member.

3. The combination with a solenoid, a longitudinallymovable core therefor, a plu- -ralrit v of switch member's resiliently mounted thereon, a plurality of stationary contacts arranged in' pairs, resistances connected to said stationary contacts, the distance .between each pair of stationary contacts and illustrated and dewith a resistance, of an electro-responsive their respective switch member being inc a d awa h b t m i s i tcpn hth between the switch meziib'iis b' seeasi l mistr es 1 t e Isa ah; has m r ts dqw a i ed iijdall wie firth rod. to continu'e to theilgist r r.,-) mi vmovable core ,tlieretor, an extens on on said core, collars on-said.-Xtension,,-a plurality 7 of disk contacts loosely mountedjon said extension, springs interposed between each disk and the collar next below it, a laminated contact secured to the lower end of said extension, and a plurality otstationary contacts arranged in-pa-irs and having resistances connected thereto, said contacts being arranged to be bridged successively.

A motor controller comprising a solenoid, a movable core therefor, an extensidn on said core, collars on said extension,a plurality of switch members loosely mounted on said extension, springs interposed between each switch member and the collar next below it,

a plurality of stationary contactsarranged in pairs, resistances connected to said contacts, the distance between the contacts and their switch members increasing toward the 'bottom of the extension, whereby when the core is raised the pairs of contacts will-be successively engaged and the resistances removed from the motor circuit step by step. 6. The combination'wit-h a solenoid, of a movable core therefor, a plurality of collars, on said core, loosely mounted on said core,-springs, interposed betWeen-eachswitch. member and the collar next below it, a plurality of station: ary contacts'arranged in pairs and having. resistances connected thereto, said -contacts being adapted to be successively engaged by the switch members, the'sprin'gs beingadapted to yield as the switch members engage their respective contacts to allowthe core to move to final position to bring the last switch member in engagement with-its pair of stationary contactsL V 7. ,In a motor controller,thecombination with solenoid winding ada'ptedto be connected across the circuit, and a winding adapted to beeconnected across the armature terminals, of a longitudinally movable core for said windings, a'- plurality of switch members loosely mounted on said core,.

sive1y' engagedi p i e allowing the core to move through the switch members until the last'conta'cts are bridged.

'8' In a motor controller, the combination a plurality of switch members winding, a longitudinally movable plunger therein, a pluralit of contact disks loosely "mounted on-the unger,- springs surroundving the plunger e tween said d1sks,va laminated brush contact at the bottom of said f pung'er, a plurality ofcon tacts arranged in 10 toward t airs and connected to said resistance, the distance between each pair of contacts and their res ective bridging contact increasing he bottom of the plunger, whereby the contacts will be engaged successively, and means to control the movement of said plunger.

In witness whereof, I have hereunto subscribed my name'in the presence of two wit- 15 nesses.

CHARLES E. CARPENTER.

\Vitnesses V I c A. J. HORTON, ROBERT LEWIS Anus.

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