USRE12538E - Electric motor - Google Patents

Description

No. 12,533. 'l REISSUED OCT. 9, 1906.

C. H. KEENEY. ELEGTRIG CONTROLLER.

APPLICATION FILED MAR. 30, 1904.

2 SHEETS-SHEET 1.

@y I Y @@@M/ WZ J5 wwm.

Albi'olum.

REISSUED 00T. 9, i906.

0. H. KEENBY. ELECTRIC CONTROLLER'.

APPLICATION FILED MAB. 30, 1904.

E SHEETS-SHEET 2.

UNITED STATES CHARLES H.

PATENT OFFICE.-

KEENEY, or MiLWAUKEE, wiscoNSiN, ASsIeNoE, BY

MESNE ASSIGNMENTS, ro EMiL BRAND.

err-:orme CONTROLLER.

No.v 12,538.

Specification ofessued Letters Patent.

Reissued Oct. 9, 1906.

' Original No. 687,829, dat-eel December 3, 1901. Application for reissue filed March 30, 1904. Serial No, 200,849.

To all whom, it may concern,.-

Be it known that I, CHARLES H. KEENEY,

residing at Milwaukee, in the countyof Mil- Waukee and State of Wisconsin,'have invented a new' and useful Improvement in Electric'Controllers, of whichth'e following is a description, reference being had to the -ac- A conpany'ing drawings, which are a part of this speciiication'.

Ihe object of my invention is to provide an'v improved electric-current controller adapted in an electric System to automatically control, reverse, and Shut off the electric current. Y

The'invention is directed chiey to the j novel :construction and arrangement of the controller, including the electric'system in which it is embodied'and'its various parts,

whereby a'maXimum of efficiency is Secured in a combination. of devices having a minimum of parts. f i

' The' invention consists-of the devices, their parts and combinations, as hereindescribed and claimed, or the equivalents thereof.

In thedrawings, Figure I is a diagram of an electric system in which my improved devices may be employed, the devices embodying my nvention'being indicated thereon in `suitable relations to. `the electric system.

, in Fig. 2.

Fig. 2 shows amas'ter-solenoid and devices therewith that are controlled or actuated` thereby or related thereto. Fig. 3 is a side elevationof the solenoid and devices shown Fig. 4 is a detail, partly in section, of devices shown in Figs. 2 and 3. Fig. .5 is a front view of an auxiliary frame supporting a brush circuit-closer'. Fig. 6 is a frontl view, partly section, ofv a solenoid-reversing switch; and Fig.. 7 is an edge view of the reversing-switch shown in Fig. 6.

`My present invention is embodied in several devices or sets of devices and their connections and relations to each other in an` electric-motor system, which may be such as is shown in l, and for convenience of reference and description these devices .or setsfof devices may be designated as'follows: a master-solenoid A, a plurality of circuitclosers B, an automatic cut-ofi'. C, a handswitch- D, and a solenoid-reversing switch E.

Besides these theme are other electrical and mechanicalI devices going to make up the y complete mechanism, but which it is not portant tosegregate or specifically'individu- The electric connections of the several electrieal .devicesare shown on the dia-grain Fig. 1, and theseveral lines thereof are hereinafter described, and the operations of the devices inconnection with the lines are explained..

In the drawings, l represents a slab of slate 'which is adapted to be afiiXed in upright position to a suitable support, andthis slab or slate serves as a suitable Support for the devices embodied in my invention and as an insulatorvtherefor. -Any equivalent means of support and insulationfor t'hedevices may be employed; but a slate is deemed preferable. Asolenoid-frame 2 is secured detachably to the Slate,and asolenoid-Spool 3 and its coil 4 are mounted in the frame substantially as is common in the construction of solenoids. A soft-iron solenoid-plunger 5 is loose and is adapted to move vertically .in the spool of the solenoid. A lifting-bar is secured conveniently by an arm 7 to the lower end of the plunger 5 and depends vertically therefrom. The bar 6 is advisably provided with a piston-valve 8, which enters a dashpot 9 and is adapted to act on a liquid niedium in the dash-pot, whereby the too rapid descent ofthe lifting-bar is prevented when it is dropped by the master-solenoid being denergized. The lifting-bar 6 is also provided With a number of catches 10,secured adjustably thereon, the number of catches corresponding with the number of devices to sets of these contact-pieces are shown; but y the number may be increased to any extent required, or vno more than two sets may be employed. These contact-pieces are severally terminals of lines of the electric system.

A number of electric-circuit closeii, 12 12, preferably constructed. of laminated copper and correspendingV in number with the sets ot' contact- pieces 11 and 11, are so mounted as normally to be out of contact with thc contactieces 11 Il, but to be capable of being` IOO lfte ,and thereby-put'severally one after another into electrical contact withA their severalusets of* contact-pieces 1,1 or- 11%,

' that the hook ent down movement of the lowermost bar is provided with carbon contact-pieces 29 forwardly into the path thereof.

. Tame 11 Each of the brush circuit-closers 12 is mounted on an auxiliary frame 13, which frame is slidable vertically at one side on the liftingbar 6 and at the other side on shifting rods 14 14, which rods are mounted slidably endwise vertically in posts 16, fixed on the slab 1. Each of the frames 13 is provided with a hook 17, pivoted thereon and` advisably in bell-crank form. A tilting rodV 18, slidably endwise vertically in the frame 13, passes loosely through an a erture therefor 1n one arm of the bell-crank hook 17 and is held therein byfa pin through the upper extremity of the rod. The vhook-tiltlng rod 18 is held downwardly by a spring 19, and thereby the hook 17 is tilted rearwardly out of the path of the catch 10, with which the hook 17 1s adapted to engage when the hook is tilted A spring 20 about the rod 18 under the arm of the hook 1 7 is adapted to hold the hook yieldingly forward in the position shown in Fig; 4, so when the rod 18 is elevated, as shown in Fig. 4, will be in the path of the catch 1 0, but permitting the hook to yield rearwardly suificientl to permit the catch to' pass the hook when t e bar 6 goes down and causing the hook to resume such position as to be caught by the catch and held thereto releasably, thereby lifting the frame 13 as the bar 6 is, elevated. A nut 21 on each of the frames 13 below the uppermost onexserves as a buffer that on the movement of any of these frames 13 upwardly will contact with and lift the rod 18 in the frame 13 above it, tilting the hook 17 into the position shown in' F ig. 4. v

A stop 21a, fixed on the slate 1, acts to limit the downward movement ofthe lowermost rod 18, but permits a slight inde endlirush circuit-frame 13, and thus throws the'hook carried by said lowermost frame into position to allow said hook to be caught by the lowermost catch 10 of the lifting device, and hence provides for the movement of said lowermost wardly Y The owest set of contact-pieces 11a are provided with auxiliary contact-pieces .22 22,

which auxiliary contact-pieces 22 are advisably of carbon, being mounted in meta-l cups 23,movable vertically in guide-frames consisting of the-metal arms 24 25, which are affixed' to the contact-pieces 11a. The cup 23 is provided with a standard 26, that passes loosely 'through the frame member 25 and is provided with stops-consisting of a nut or nuts on its upper end for limiting the movement of the cup and auxiliary cont-act-A iece downwardly. Alspring 27, coiled about tlie standard 26 below the frame member 25, holds the cup 23 and the' auxiliary contact-piece'downwardly yieldingly. A metal, bar 28 is mounted and lnsulate on the lowest frame 13, and this this lowest frame 13 is first lifted held vup to its Workby the cam 33. 33 are withdrawn by the descent of the rod 29, registering with and adapted to contact the piepes 22 22. This device forms a carbon break lfor the electric line of which the contact-pieces 11a are terminalsLthe. break being adapted to close the line in advance of the closing accomplishedV by the brush- 12 `belonging to this set of terminal ter-solenoid. :On the reverse down 4movement of the brush-carrying frame the brushes 120 separate from contacts 11, and all the ielces when. y the mascurrent is carried bythe carbon breaks 22 and 29 until said carbon-breaks are finally separated b the continued down movement of the brush-carryingfframe. By this arrangement the arcing occurs entirely between the carboncontacts, and hence prevents the burning between the contacts .11 and the brush which would occur if the current were broken between the contacts .11 and the laminated brushes. The brushes 1.2 are insulated on the frames 13, as well as the break-bar 28. l

In connection with each of the frames A13 there is a supporting-hook 30, lsuependedfgo loosely on a pin fixed in the post 16, suitably located-therefor, and these hooks -areadapted i each to i engage releasably a shoulder: or catch 31 on the frame 13. These hooks-.are

'held yieldinglv normally -in a suspendedposition out of the path of the shoulder 31 by a spring 32,

but are adapted to be slightly tilted into the path of the shoulder by means ofa button-cam 33,'secured adjustably on the rods 14 and 14, The rod 14 at its lower end is provided with a laterally-projecting ICO arm 34 and the rod normally rests -on the post 16 immediately below its lower end. The arm 34 projects above and in the path of the lowest-frame 13 and so as to'be convIOS.'

tacted directly by thev nut 2-1 thereon and lifted thereby as the auxiliary frame' 13 goes u By the movement upwardly of the rod 1 4 tlle cams 33 force, the hooks 30 into the path ofthe catches 31 and as each of the frames 13 is raised its catch 31 is carried lpast the hook llO 30 and'is then engaged-thereby, whereb the l frame 1 3 is heldin this elevated position, ,olding the circuit-closer 12 in ycontact with the terminal'pieces 11 until the frame is released 'from the hook 30, which release is accom-l plised by theslipping of the hook from beneath the catch when 14', which occurs by ravity when the rod is no longer supported vy the lowestframe- 13.

The rod 14, whichis substantially a prolongation of the rod 14 and isprovided with a ca1`n`33, that bears' against the lowest hook 30, is pivoted at its lower end to one arm of a bell-crank armature-frame 35 and is liftedV the hook is n'longerV The cams ing thereof electrically. The rod 14aL is released and drops-down by the tilting of the bell-crank frame when Athe armature is released. The lower end of the rod 14a is advisably jointed at 37 to the-upper portion of the rod, and a stop` 38 on the rod may be employed as an additional means for limiting the movement of the rod downwardly, the sto resting on the lowest frame 13. The coi .ofthe electromagnet 36 is in a shunt-line vof the electric system, A. cam 39, projecting' downwardly `fromf the lowest frame 13, is ada ted to contact wedgin'gly with an arm of t e bell-crank frame 35 and tilt the frame to a position in which the armature thereon is substantially in the position shownin Fig.

when at rest.

2 when'the lowest frame 13 is at the'lowest limit of itstravel--thatis, in-its position In connection with the electromagnet 36 a solenoid 40 may also `be employed. The

'electromagnet is adapted by the release of its armature when the e ectrical energy becomes l very light to let down the rod 14a, and thereby let down thelowest'frame 13, and conseqlu'ently all the other frames 13, thus opening a l lthe electric lines closed-.by the circuitclosers 12 and the break 28, thus putting the motor out of action when the current bethe' line that inclu-des the coil of the electrocomes too weak. The solenoid 40 is adapted when there is an overload of theelectric currentl to short-circuit the ele'ctroinagnet36, and thereby` permit 'the lower releasing-rod to drop by reason of the bell-crank armature V35 being released by the electromagnet .36,

whereby the motor is put out of action 'the same as when there isan underload. This solenoid 40 has t'he usual spool and coil, with a soft-iron core or armature 41 and a circuit-1 lcloser 42, adapted to'contact with the lineterminal vcontact-pieces 43 43 in avshunt of magnet 36.. The specific forms of the electromagnet 36 andthe solenoid 40 a-re not ma- Y teria] to thisinvention; but I preferably employ devices like those shown in my Patent,

4 ofthe master-solenoid. there is' acircuitcloser 44, preferably in the formof a Inetalslide provided with'a guide-rod 45, that is movable endwise in a block 46, 'fixed on the vslate 1.` This block 46` is one of the line-terrninal'contact-'oieces, and the other terminal contact-piece 47vis also secured to the slate 1. The 'circuit-closer'44 is provided with acarbon noint 48, .which fits movably in; the

metal -portion of the circuit-closer 44 'and is forced outwardly yieldinglyby a spring 49,'

Secured toand' lcrumed on the metal portion of the circuit-closer. Normally the car- ,hun ppint rests pnadead-block I5() ofv insupiece 47.

lating material, which is iixed on the slate 1 adjacent to the terminal contact-piece 47..

.tion movablyby the frictional contactr of the carbon point 48 on the block 50 and contactdrawn into the solenoid, asA shown in Fig. 2, and the bar 6 is thereby lifted into the posi- When the solenoid-plunger4 5 is'A tion shown in Figs. 2, 3, and 4, an arm 51, of j insulating material, secured to the lower end of the plungerv5, engages a projecting part of the circuit-closer 44 and lifts the circuitcloser and holds it in the'position shown in Fig. 4, in-which the electric circuit of the coil of the master-solenoid is broken. 'When the plunger 5 goes down, the arm 51 engages" an adjustable member 52 on a projecting finger 53 of the circuit-closer 44 a'nd moves the' circuit-closer down until the carbon point 48 contacts with the terminal piece 47, thereby closing the electric circuit of the master-solenoid coil. When the uppermost frame 13 is lifted to its elevated position, an arm 54, of insulating material, fixed on the frame, engages anadjustable member 55 on the finger 5 3 and lifts the circuit-closer 44V into theposi-v E and shown in detail in Figs. 6 and 7) con- IOO sists of two solenoids and mechanism and apparatus in connection therewith. for closing and reversing electric lines. The metal frames 56 57 of these solenoids'are mounted in insulation conveniently on the slab 1. The means for mounting these solenoid-frames or IOS solenoid-poles,`which I prefer., is shown in Figs.. 6 and `7,. in which projections on the frames 57 are securedv directly to electric-lineterminal contact-pieces 58 58a, 5 9 59?, 66 60, v

and 61 61a by bolts or screws. These contact-pieces areseverally fined on the slab r1,

preferably by'means of a threaded metal rod 62, which forms electrically a part of an electric circuit. Nuts 63 63 turn on the rod162, one against each side of a contact-piece, and clamp `it Vin position adjustably on theA rod. Another nut 64 turns 'on the rod against the surface of the slate, and a corresponding nut may be employed on the otherside of the slate, turning on the rod to secure the rod 'in position'in the slate.; The solenoid-coils 65 66 are wound on spools andare mounted the frames 56 and`57v, respectively, 4in the usual manner of solenoids. The plunger-armatures 67 68 forthese coils are provided, re-

spectiVely, with shifting rods 69Y 70, which a vibrating lever 71, pivoted centrally, on a suitable support, conveniently on the slate 1. This construction secures a reversely-synchronous movement of the plungers 67 68 in the'solenoid-coils and of the circuit-@losers mounted on the rods 69 and 70. Each of the line-terminal contact-pieces show n in Figs. 6 and 7 is provided wlth a carbon contactpiece 72, mounted in a metal cup 73 which is movable endwise in a metal arm therefor secured Vto and forming a part of the contactpiece. The carbon contact-piece is held -to advanced position yieldingly by a spring 74. The construction is substantially like that shown and described in connection with the carbon contact-pieces 22. 4For each of these carbon contact-pieces 72` a complementary carbon contact-piece 75 is provided,which complementary contact-pieces are mounted in pairs on kfour metal break-bars 76 76a 77 7 7, severally mounted on the rods 69 and 70, one bar at each end of each rod. These 4bans are provided with enlarged apertures through which the rods 69 and 70, respectively, eX-

tend, and the bars are curved at this point, so

as to be capable of a sli ht tiltable adjustment on the rods. The ars are secured in place on the rods by nuts 78, turning by pltved, andwthese 'circuit- closers 79, 7 9, 99,"

an are severally mounted in pairs on the 'in'ly..

screw-thread on the rods at the two'sides of the bars. The bars are insulated on the rods. This construction forms `a plurality of circuitclosers in setsof the style and character known as breaks For closin circuits between each set of 'line-terminal contact-pieces shown on Fig. 6 a circuitcloser, preferably of laminated copper, is em- 99 shifting rods 69 and 70, respectively, above and. below sets of terminal contact-pieces. The constructionand disposition of the parts are such thatthe' circuit-closer 79 will contact with the terminal pieces 58 and'58a at the same time that the circuit-closer 99 will contact with the terminal ieces 6l and .61, and so that the circuit-cl ser. 79 will contact with the terminal pieces 59 59"i at the same time that the circuit-closer 99al contacts with the terminal pieces 60 6 0a andA by reversal that ,these c'ircuit-closers will in the same relation be separated'from the terminal pieces, thus opening th'e circuits correspondeferring to the dia am -1, which illustrates a system of e ectric line-wiring in connection with the several devices combined in -my invention, it will be noted that the devices and wiring there shown above and includingthe bindin -po'sts K are mounted on the slate 1 and in t is form are ada tedto be connected up through the binv ing.-

\posts Kto the motor M and to' the two lines of the electric circuit 80 80h.

In referring'to the electric lines that are shown on the diagram it is found convenient the electric` to trace them and refer to themas directly i follows; but I do not wish to be understood as stating that the electric current runs in or `on the Wires in the directionsIl indicated, as with a medium so subtle as electricity and so instantaneously ermeating in all directions in which a suita le conductor isvfound it is not proper to speak of electricity as running in a certain channel or line.

(lommencing for a convenient startingpoint with the line 80, which runs-to a binding-post K, the' line continues as 80a, includving the coilof the-solenoid 40, to a contactpiece 11. From said contact-piece 11"L a ine (designated 80C) runs to the metal switch D, pivotedon the slate 1'. From a terminal contact-piece 81, fixed o'n the slate 1,A a line 80d runs to and forms the solenoid-coil 66 inf4 the reversing-switch and thence is continued in the line 80e toa terminal contact-piece 61L and therefrom as theline 8()f to the .bindingpost K", and thence by a line 80` to the main line 80h. From a terminal contact-piece 82,

forms the solenoid-coil 65, andthence to the .line 80e. A line 80k connects the two termifixed on the slate 1, a line v801 runs to and\r runs to the' binding-post K2 and therefrom as line 80 to the other side of the armature of themotorM;A A line 80'connects the ter- -minal contact-pieces 60a and 61a. A line 80p connects the terminal contact- pieces 58 and 59. -the slate 1, are connected by aline 809, which runs therefrom to the terminal contact-piece 47, adapted to be contacted bythe 'circuitcloser 44.v A line 8()r runsfrom the contactpiece 46 to and forms the Solenoid-coil 4, and thence, as line 80S, is continued to the line 80f. A line 80t runs from'the terminal contactpiece 59 to the several contact-pieces 11' and 11, forming one side of the several steps of contact-pieces 11 and 11- and thence to and Switch contact- pieces 83 and 84, xed in forms the coil of the electromagnet 36, and

thence to-,the binding-post K', where it connects with the motor shunt-line 80 and leads Vto-the line 80h.. 'Between the contact-pieces 1 1 and 1 1a resistant mediums are employed in the line 80, A line 80" runs from the line 80'? at post 11, therein to the other set of. terminals 1 1 1 runs thr ugh a-contact-piece 43 and thence to a terminal contactiece 8? fixed-in the slate 1, and from an Aa jacent contact-piece 88, fixed in the slate 1, a'branch line 8O.W leads, by way ef line 802 to the other contact-piece 43. A line 80y connects line 80q .to the contact-I ieee 11, connected toline 80. A lamp 89 1s adisably employed in line 80y as a resist- 'ance From the line 8()t a branch line 80V,

switch D and arts relating thereto are such that the. switc D when in an vupright position will rest on the insulating-block between the contact-pieces 81 and82, andvalso on the segmental elongated insulating-block 86 between thecontact-pieces 83 land 84. When the switch is swung either to rightor leftitA first contacts with 81 or 8,2 and therelafter on being swung farther awa from the= block 85 contacts coincidently wit 83 or 84. A rearwardly extendin insulated metal member 98 o the switch is adapted tolcontact coincidently with the terminal pieces 87 and ,88, servingas a circuit-closer.

' In the use of the controller above described, including the necessary wiring or electrical' lines, which may 'be as shown inthe diagram- Y matic View Fig. 1, and connected uplto a motor and to asourceof electrical energy, it would operate substantially as follows: Assumingv the controller to benen-active or dead, with the switch-arm resting "on the insulating- blocks 85 and 86 and on the blocks ,87 and 88, the core of the master-solenoid b eing at the lowest limit of its travel, and all the electrical lines in which the contact-pieces for the brush-circuit closers are included being accordingly open, thereupon on swinging the switch, say, to the right it first contacts with terminal contact-piece 81 whereu on one solenoid-coil of the reversing-switch is energized and its core drawn up and mechanically the core of the othersolenoid-coil pulled down, closing the circuit of the motor-armature M in such manner as to cause the motor to rotate in one directionsay tothe right. A further movement of the switch contact with contact-piece 83, `w ereupon the master-solenoid is energized and also the electromagnet-. The core of the mastersolenoid is thereby drawn up, and the lifting-` bar 6 is lifted up; causing its lowest catch 10 to engage with the hook 17 of -the lowest brush-frame, and vthereby raisingi fthe said lowest frame. Oi course the rai 39 out of contact with the armature .of the electromagnet; but said armature is prevented from turning and thus-loweringv the lower releasing-rod,- pivoted thereto, by reason of the fact that the said armature is now held to the Vvelectromagne't by ,the vmagnetization of Asaid magnet. With the raising of the lower brush-carrying frame the carbon- contacts 29 and, 22 are irstfbrought into engagement,

.and following this the brushes `12 are brought vin to contact with the first set of termina contact-pieces 11,"closing the circuit and starting the motorthrough all the resistance in the controller. The lower brushcarryin frame being thus lifted, is lcaught andfhe d up mechanically by the 'holdinghook 3() pertaining thereto, which hook enages the shoulder 31 on the said frame, as ereinbefore described. As the solenoid aputs it' in' ngy of the' lower brush-carrying frame raisesf'the wedge `enoug piece to close the electric line. 4Also the .vproaches the u per limit of its travel in the master-solenoi the projecting arin 51 of the core'catches the circuit opener and closer '44 for the master-solenoid, and carrying it alon opens or breaks the line of the master-solenoi.

coil, cutting the solenoid out of the circuit by permitting the core `and the lifting-bar 6 to drop .by gravity. It will be understood that thecircuit opener and closerv cannot be fastened rigidly'to the solenoid-core,but lost play of the saidsolenoid-circuit opener and closer is provided, so as to permit an independent movement of the solenoid-core to thereby allow the said core to Valmost complete its movement up or down'before makin or breaking the' circuit of the solenoid. hen the core and the liftin -bar. approach the lowest llimit of theirtrav, the arm of .the core engages the projection 53 fromthe solenoid-.circuit opener and closer and carries said circuit opener and closer down with them, thereby A .bringingthe contact of said circuit opener and closer into engagement with the contact-.

piece'47., beneath the dead block or piece 50, y -and thereby again closes the circuit of the master-solenoid coil. The movement of the core upwardly is then repeated, carrying upwardly therewith the second brush-circuit closer and cutting out one step of the resistance ofthe controller. The master-solenoid is now again denergized by the shitting of the solenoid-circuit opener and closer, and

ing the circuit of the master-solenoid, and as the core then drops the 'arm 51, carried thereby, en ages and restsv on the projection' 53 from tie solenoid opener and closer; but, as the brush-frame carrying the uppermost brush-circuit closer is .provided with a projecting arm 54, that receives thereon the pro- ]ection 53` from the solenoid-circuit opener IDO In the form shown in the drawings,

IIC

and closer, the said circuit opener'and closer i issupported against being moved down far to contact with the lower contactsolenoid-circuit opener and closer being thus prevented from going down supports the lift-fing-bar against falling. On swinging the switch D back to the block 85 the lower insu,-i Ilated-circuit-closing member 98 ofthe switch v will contact with the pieces 87 and 88, closing their circuit,v. thereby short-circuiting the electroma'gnet, denergizing itand perm-ity tilt, permitting the in cutting out ythe motor, as in ot ting the armature-frame to tilt in order-to let down the lower holdinv -rod 14Hl and-permitting the hook 3()` to s i from engagement with the shoulder 31 of t e lowest brush-carrying'ramejwhich thereupon drops and lets down the 'upper holding-rodflfl, vpermitting the hooks 30 above to slip from engagement with the shoulders of the other brush-carrying rameand allowing said frames to drop by gravity, thus cutting out the motor. The apparatus isthen in initial non-active position. By Swingin the switch D to vthe contact-pieces 82 an 84 the lsame movements andoperations are obtained, except the reverse movement 'of the lmotor secured by the reversing of the. switch Ej ,In case of an electric underload of the electric current the electromagnet 36 releases its armature and-.the bell-crank frame 35 tilts, letting down rod 14 pieces 43 43, `cutting out the electromagnet` 36 and permitting its armature-frame 35 to rod 14 Ato drov resulting er cases of the drop ing f the 'rod 14, What claim 'as .my invention is 1. In an electric controllera single solenoid and its reciprocable core, circuit-closers adapted to be moved sepa-- rately andv successively by the repeated movementsof the core into contact With their respective sets of circuit contact-pieces.V

2. In an automatic electric 'controller system, a single solenoid and its core, a means attached to and actuated by the core for initially closin an electric circuit, and other means attac for successivelycutting out resistance after the initial closing of the' circuit.

3. In an electric controller system, a solenoidI and its core, a means attached to and' actuated by the vcore for initially closing an electric circuit, other means attached to and actuated by the core for successively cutting out resistance after the initial closing of the circuit,and means for automatically breaking the initial closure by a predetermined unsive y into contact derload overload rent.

1. In an electric oid. and its core, a plurality of circuit-closers adav ted to be moved separately and succes- With their respective sets oi circuit contact-pieces, means secured to and moved by the `core of the solenoid'for moving the circuit-closers to their contactor breaking-of electric curpieces, and other means for holding the circuit-closers releasably in contact with the oontact-pieces.`

5. Inan electric controller, a master-solenoid and its core,

a plurality of cireuit-elosers I mounted'- movably,

and cutting out themotor-electrically the same as if the switch I) a plurality of. '.cult-closers.

ed to and actuated by the core -ada ted to be put lrelease sively-into closure with controller, a master-solensolenoid-core adapted-'tobring the circuit- 'means attached vto the closers singly successively to closure With their V several electric'lines, other means adapted to hold the circuit-closers releasably'in closure with their lines, and means for automatically releasing the `circuitclosers and permit-ting them to' break their closures Withtheir lines.

6. In an electric controller, a master-solenoid and its core, a' plural-ity of circuit-closers, means carried by the core adapted .toclose up the-circuit-closers, means to hold the/circuit-closers in closure releasably, an electromagnet adapted when energized tov lock said last-enumerated means and when denergized to releasesaid means and-'permitthe circuit-closers to break heir closures. y

7. In combination, in an electric controller` system, a master-solenoid ,and its core adapt'- ed to close up circuit-closers, arielectromagnet adapted to release the circuit-closers, and a solenoid-revers electric current. i

8. In combination in an electric controller system,'a' master-solenoid and its core adapted to close up circuit-closers,an electromaging switch for reversing the net adapted to release the circuit-losers auand a solenoid and lits tomatically on underload of electric current,

core adapted on overy load of electric current to short-circuit said electromagnet causing 49. In combination in mounted thereon, 'a bell-crank hook mounted on the frame, a spring-Withheld actuatin rod ada ed to be thrust against and to tiIt the hooli, and a ada ted tobe put into engagement With and hol said frame'releasably.

10. In combination in troller, a movable frame 4having a circuitcloser mounted thereon, a bellcrankv hook mounted on the frame, a' spring-Withheld. actuating-rod adapted to be thrust against and lto tilt the hook, a yielding supporting-hook into en agement with and hol said frame releasab y, and means for movinip and locking said supportinghook 11.. In anelectric controller, a plurality of circuit-closers adapted to' be lifted succestheir lines, .a verticallyreciprocable lbar provided With means for severally and successively enga in and lifting said circuit-closers, -and a into which a ed t'o retard t and thereby theA movements ofthe bar upwardly. c.

12. In anelec'tric controller, a master-solenoid and Aits core,`.a bar attached to and `adapted t0 be lifted by the energizing ofthe solenoid, a plurality of circuit-closers one above the other adapted to be severally successively emotion of the bar doWnWa it to release said ciran electric con-l to -increase the time betweenv an electriclcontrollen, a movable frame ha 'ing a circuit-closer ICO yielding supporting hook IIO -potl piston on the bar plunges adavtr 1y lifted by the bar into closure with their several lines7 the lowermost closer being arranged to be lifted lfirst', and means adapted to hold said low ermost closer in closure when l it has been lifted to closure.

13. ,In an electric controller, a master-solenoid and its core, a bar attached to and adapted to be4 lifted by the energizing of the solenoid, a plurality of circuit-closers one above the other adapted to be severally successively lifted by the bar into closure with vtheir several lines, the lowermost closer bein arranged to' be lifted first, means adapte to hold said lowermost closer in closure when it has been lifted to closure, and independent means adapted to hold each closer above the lowermost one in closure when each closer has been 14. In an electric controller, a master-solenoid and its core7 a bar attached to and adapted to be lifted by the energizing of the solenoid, a plurality of circuit-closers one above the other adapted to be severally successively lifted bythe bar into closure with their sevlifted bythe bar into closure with their sev eral lines the lowermost closer being arranged' eral lines the lowermost closer being arranged to be lifted first, means adapted to hold said lowermost closer in closure when it has been lifted to closure, and independent means adapted to `hold each closer above the lowermost closer in ,closure when severally lifted thereto, said last-enumerated means being arranged to be put into position to support the circuit-closers above the lowermost one A by the elevating of the lowermost circuitcloser. l

. 15. In an electric controller, a master-solenoid and its-core, a bar attached to and adapted to be. lifted by the energizing of the solenoid, a plurality of circuit-closers one above the otheradapted to be severally successively to be lifted first, means adapted to hold said l Ilowermost closer'in closure, and `an electromagnet adaptedby an-underload of current thereon to release means for holding the low-v ermost.4 .closer` inclosure and permity that closer to drop breaking the circuit; 16. In an electric controller system, a mas ter-solenoid and its core, a plurality of circuit-closers disposed and "adapted by the reciprocation of said core caused bythe energizing and denergizing of the solenoid to successively cut out resistance a main electric circuit, a circuit-closer actuated by the reciprocation of said core to automatically cut out and to cut in the solenoid-line, and means on the last moved of the successivelymovable resistance cut-out circuit-closers adapted to block said solenoid-line circuitcloser and preventit from moving to place to cut in the solenoid-line.

17. In a' solenoid-reversing switch, a pair ofsolenoids and their cores, means connecting said cores mechanically ,so that When one is drawn into itssolenoid by electric energy.' the other will be Withdrawn from its solenoid fss mechanically, and circuit-closers at both end of both solenoi'ds pools connected to the cores and adapted to be closed reverselyin sets by the ener 'zing electricallyl of one or the other of the so enoids. A y 1 18. In a solenoid-reversing switch, a solenoid and its core7 a circuit-closermounted on the outer end of said core, a non-magnetic extension of the inner end of said core, and a circuit-closer mounted on the non-magnetic extension of the core.

19. In combination, a single solenoid and its core arranged to reciprocate, and means actuated by the core whereby the initial movement of the core will close a circuit and 4each suceeding duplicate movement in one direction will close a circuit and cut out aA unit of resistance..

20. In an electriccontroller system, a single solenoid and its therein-reciprocating core, and a series of devices movedby the core for successively cutting out a new unit offresistance mechanically each time the solenoidis energized.

2 1. In anI electric controller system, a solenoid and its` core, means for. successively cutting` out a unit of `resistance mechanically each time-the solenoid is energized,and other means for breaking the initial circuit and setting in all of the units of resistance at a predetermined overload or underload of theelectric current. In testimony whereof I aix my signature in presence of two Witnesses.

yci-niiuns H. KEENEY.

` Vlitnesses':y V i A. L. MoRsELL, ALMA .K LUG.

loq

Images