US1015328A - Magneto-circuit controller. - Google Patents

Description

E. S. LINCOLN. MAGNETO OIRGUIT CONTROLLER. APPLICATION FILED JAN. 27, 1910. 1,01 5,32 Patented Jan. 23, 1912..

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MAGNETO CIRCUIT CONTROLLER. APPLICATION FILED JAN. 27. 1910.

1 ,01 5, 328. Patented Jan. 23, 1912.

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tm'iirnnsrar as r 'ggrnnrorrron EDWIN LINCOLN, 0F BROOKL'INE, MASSAOHUSETTS, ASSIGNOR TO'ELEGTBIC GOODS MANUFACTURING COMPANY, A CORPORATION OF MAINE.

MAGNETO-CIRCUIT CONTROMER.

Specification of Letters Patent. Patents: 1-52.11, 23,1912. Application filed January 27, 1910. Serial No. 540,415. v

To all whom it may concern:

Be it known that I, EDWIN S. LINCOLN, citirzen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Magneto-Circuit Controllers, of which the foliowing is a specification.

My invention relates to ignition systems adapted to generate high tension electric current for the purpose of'energizingthe ignition devices of engines or motors of the internal combustion type, and thereby to produce a spark at suchdevices for the purpose of firing a charge of combustible in the cylinders of such engines.

More especially my invention has reference to ignition systems in which is employed a source of electricity, preferably a magneto electric generator having a revoluble armature carrying a generating winding, in which electric current is generated as a result of the rotation of the armature; the fluctuations in the flow of the current generated in the generating windings being utilized to energize inductive means which are in operative connection with the igni- Such fluctuations are com= moniy "most effectively secured by interrupting the flow of current produced in the generating windings at a time when such flow is approaching its maximum, the sudden cessation of current flow operating to render operative the said inductive means with which such' windings are connected. For the purpose of ettecting the interruption of the flowof current in the energizing winding, it has been customary to intercalate in the circuit in which said winding is included, a circuit breaker embodying two relatively movable contacts, normally in electrical engagement with each other, which are caused to separate at the desired instant, and so open the circuit which is energized by the generating winding.- In many cases said circuit breaker is electrically operated by a magnet which is arranged,

when magnetized by the current flowing through the same, to attract one of said movablecontacts,and, by causing it to separate from the other contact with which it. is normally in engagement, to interrupt the continuity of the energizing circuit. It has heretofore been the usual practice to connect the winding of said magnet in series with the generating winding, so that the new oi the current generated in the generating winding,- through the magnet Winding, pro

duces the magnetism therein which causesthe operation ofthe circuitbreaker. An objection to this practice is founded in the consideration that when the generator winding and the magnet windingare thus connected in series, the presence of the numerous convolutions of wire,co'mprised' in' said magnet winding ordinarily has the effect of introducing intothe circuit in which the generating winding and the primary winding of the induction'coil are included, a reaction producing elementwhich operates to retard the rapidity of the fluctuations of the current in the said primary winding, and so materially decreases the electrical efficiency of the current inducing means.

The object ofmy invention, therefore ,is

to construct an ignition systemct the type described, in which the circuit in which is included the generating winding by which the inductive means is energized. is electrically distinct from the circu t in which is ncluded. the magnet winding by, which the circuit breaker intercalated in such gen erating winding is actuated, sothat the fluctuations of current in such generating Winding will not be retarded by being obliged to traverse said magnet windings. To attain this object I have devised the novel formof magneto electric generator, and have associated the same in operative relation with cooperating electrical. apparatus as hereinafter more particularly and fully described in. the specification, illustrated in the drawings accompanying the same, and designated in the claims. l

In the drawings,-Figure 1 shows, partly in section and partly in diagram, one preferred embodiment of my invention. 2 is a view taken on the plane XX, Fig.1. Fig. 3 shows, partly in diagram and partly in section, a modification of my invention; Fig. 4 is a view partly insection and partly in diagram showing my invention adapted for use in connection with multi-cylindered motors, i

Referring to said Fig. 1, at 1,1, are the magnets, preferably of the permanent type and of the horse shoe or U form, commonly employed in magneto electric generators and adapted to produce -a magnetic field. In the magnetic Fig.

magnets, is located the armature 2, which is 'rotatably mounted by the journals 3, 3, in

the bearings 4, 4. Said armature 2, which may be of any approved type, comprises a core portion 5 on which are coiled. current generatingwindings, comprising an energizing winding 6, which is adapted to generate the current by which the inductive means is energized, and an auxiliary winding adapted to generate the current for oper-- I therefrom as by the bushing 9. A wiper 10 is preferably resilientlyheld in engagement with one end of the plug 8 as shown. .At 11- is a binding post, mounted for example, on the bearing 4; said binding post being in grounded connection with said terminal 7 of the energizing windings through the ar-- mature journal?) and the bearing 1 which is in contact therewith. At 12, is represented the primary winding of an induction coil, or the like, with which is associated in an inductive relation the secondary winding .13, of which the terminals are electrically connected, to the spark points 14 and 15, preferably contained in a spark plug of any approved construction and located in usual manner in the cylinder of anengine or motor not shown in the drawings. The wiper 10 is electrically connected to one terminal of said primary winding'l2, the other ter minal ofthe same being in electrical connection with the binding post 11 through a circuit which includes separable contacts embodied in a movable vibrator l6 and an adjustable contact screw 17 which is normally resiliently held in engagement therewith; both separable contacts forming a part of a circuit breaker which is actuated by an electroniagnet- 18. Thus said primary winding 12 of the induction'coil is normally electrically connected in series with the ener izing winding 6 carried by the armature, an current generated in said winding 6' will flow through the said primary winding 12 so long as the vibrator 16 remains in engagement with the contact screw 17. A condenser 19 is preferably connected in shunt around the vibrator 16 and the. contact 'screw 17 as shown. The current by which said elcctromagnet-18 is energized when it desired to operate the circuit breaker is supplied from airauxiliary winding 20, which is wound upon the revoluble armature 2 adjacent the said energizing winding (3, and which is electrically connected with said electromagnet 18 as will hereinafter appear. By the rotation oi. the armature 2, currentw-il be generated in the auxiliary winding which is utilized to energize the electromagnet 18 at the moment when its operation is desired. One terminal of said auxiliary winding 20 is grounded on the armature at 21 and is thereby in electric eon nection with the armature bearing 4 and the binding post 22 which is preferably mounted thereon as shown. The other terminal of-the auxiliary winding is led toa conducting sleeve 23, which maybe carried in the open end of the armature journal 3 and separated therefrom by the insulating bushing 24. Said sleeve 23 carries a contact arm 25, adapted to engage, as the armature revolves,

in certain of its positions,-with a contactmember 26, carried on a casing .27, which may be mounted upon the end of the bearing 4 and has a capacity for angular adjustment with reference thereto. Said contact member 26 is insulated from said casing 27 in any approved manner, as by an insulating bushing 28, and its outer end preferably terminates in a binding nut as shown. From binding post 22 a conductor leads to one terminal of the magnet 18, the other terminal of said magnet being electrically connected with said contact member 26. It is thus evident that when said contact arm 25 and contact member 26 are in engagement, the

winding of the magnet 18 will be in series with the'auXiliary winding 20. Hence the current which-will be generated in saidauxiliary winding 20, as a result of the rotation of the armature, will flow through the wind.-

ing of said electromagnet 18 and will magnetize the same, attra ting the vibrator 16 toward the magnet an separating the same from the contact screw 1:1; thus opening the .circuit in which is included the energizing winding 6 and the primary winding 12 of the induction coil. In practice I so adjust the relative positions of said contact arm 25 of the contact member 26 that the said contact arm 25 will come in engagement with the contact member 26 at a moment when the flow of current in the energizing wind ing is approaching its maximum. At such timethe engagement of the contact arm 25 and contact member 26 will close the circuit from the auxiliary winding through the electromagnet and will energize the latter, causing it to actuate the vibrator 1G and to render the circuit breaker operative to open the circuit in which is included the energizing winding 6, and the primary winding of the induction coil. The resulting interruption t0 the flow of ci'irrentin the primary winding will operate to induce high tension current in the secondary winding in the usual manner, which will produce an electric discharge between the spark points 141 and 15. Should it be desired to advance or to retard the spark this result may be cured by angularly rotating the casing 26 by means of a suitable connection, not

shown which is adapted to engage a lever arm 28. In this way the moment of the engagement of the contact arm 25 with .the contact member 26, may be delayed or hastened, with a corresponding variation in the moment of the energization of the circuit breaker magnetand of the spark production. In practice, I calculate the current generating capacity of the auxiliary winding and the number of convolutionsincluded in the magnetwinding so that said auxiliary winding will, in all its positions within the limits of the capacity of adjustment of said casing 26, generate sufficient current to render said circuit breaker operative in any of such positions.

' In Fig. 3 is illustrated an embodiment of my invention in which the same is shown asapplied to a magneto electrical generator of the high tension type, in which is employed a revoluble armature on which are associated inan inductive relation a primary winding and a secondary winding; and in which a high tension current, adapted to energize the ignition devices, is induced in said secondary winding by the operation, at the desired instant, of a circuit breaker intercalated in the circuit of the primary winding. In said embodiment is also illustrated a modified system of wind ing the revoluble armature, so that the energizing winding and the auxiliary winding are integral or continuous, although pro vided with such electrical connections and said auxiliary windings and the particular "circuits to which they are designed to supply electrical energy. In said Fig. 3 is further illustrated a circuit breaker embodying slight modifications in the manner causing the operation of the same and differ ing slightly from thatshown in Figs. 2 and in such mode of operation. Referring to said Fig. 3. 32 represents an armature which is 'rcvolubly mounted in a magnetic field,

' but situated and constructed preferably substantially like that illustrated in Fig. 1.

Said armature is mounted by means of jour-' nals 33 in the bearings 3-1, and embodies a core 35 on which are carried the generating windings 3G and the secondary windings 37 superimposed thereon in an inductive relation. One of the terminals ot the secondarv windin is connected to a plug 38 mounted in the end of journal 33 and insu lated therefrom, as by the insulating bushing 23!), while the ther terminal of said secondary winding is grounded on the armature at 40, and'isthus in electrical connection with a binding post 41, which is preferablyniounted upon the armature bearing 34. as shown. At 42 and 4-3 are represented spark pointswhich are preferably comprised in a spark plug of any approved construction, located in an engine cylinder, not shown in the drawing. Spark point 42' is connected to thebindingpost it while spark point 43 is in engagement with plug 38 preferably by means of a wiper 44 which is resiliently held in contiguous contact with the exposed outer end of said plug." The generating windings, wound in an inductive relation to the said secondary winding, are divided into two groups; that group between the ternii nal of the same numbered and an intermediate convolution, torexainple 46 con-- stituting the auxiliary winding, and that group between convolution 4-6 and-terminal 47, comprising the energizing winding. The terminal of the auxiliary'winding is connected to a conducting sleeve t8 which is mounted-in the end of the armature bearingand suitably insulated therefrom as by the insulating bushing-4C9. Preferably the said sleeve 48 isadapted to carry a plug 50 from which it is insulated, preferably by the bushing 51; said plug-50 being-in connection with the terminal l? of the primary winding, as shown. A wiper 52is adapted to engage the plug 50 on its exposed end. A brush 53 is also provided, which, in the embodiment of my invention now being described, continuously contacts-with an exposed portion of the surface of said conducting sleeve. At t is a binding post, mounted on the armature-bearing, as shown. It

vis therefore, evident that .the generating windings of the armature'core thus di vided into two groups, which although mechanically continuous, are electrically distinct. Such groups are the auxiliary wind-.

ing, having its terminal in electrical connection with the brush 53 and its other'terminal 46 in electrical connect-ion with said binding. post 54:, through the armature bearing and the armature journal, and an en ergizing winding constituted by the convolutions of the generating windings which are located between the terminals 46 and t7, the terminal 46 being in electrical connection with the binding post in the manner divides, one branch of the circuit returningto wiper 52 through a circuit breaker which includes aunovable contact carried. by the vibrator 57, anda stationary contact, normally'engaged by said movable contact, and

carried in the tip of the adjustable contactscrew 58. Beyond saidpoint- :36 the other just above indicated, and its terminal 47 branch of said circuit leads through the winding of an clectromagnet- 59, which is designed to aciuate'tlie movable vibrator 57 which forms'a part of said circuit breaker, and. back to the brush 53. Asa result of the construction and connections above described it is apparent that the circuit through lil1 1'l81g. lZlI1g winding is normally closed through th, movable vibrator 57 and the contact screw 58,- while the circuit through the energizing winding of the said armature; the intensity of its flow rising to a maximum and then dying away, according to the position occupied by the said armature relative to the magnetic field. The current so produced will flow through the circuit in which the separable contacts com- .prised in vibrator 57 and contact screw 58 of the circuit breaker are included. Si multaneously with the production of the current in the energizing winding, current will be generated in the auxiliary winding,

such current also approaching its maximumflow as the armature approaches a certain angular position relative to the magnetic field. In practice the number of convo1utions in said electromagnet and the strength of the curr'ent'flow in the auxiliary winding are so interrelated that when the 1 flow of current in the energizing winding is' approaching its maximum, the flow of current from said auxiliary winding to the electromagnet which is in'series therewith will magnetize the said magnet 59 sufliciently to attract the armature 57 and therebyto cause the separation of the same from the contact screw 58. In consequence the circuit through the energizing winding will be opened and the flow of current therethrough suddenly interrupted. As a result of the sudden interruption in the flow of the current in said energizing winding, high tension current will. be induced in the secondary winding which is inductively associated on the magneto armature with the energizing winding, and in consequence an electric discharge between the spark points 42 and 43 will be produced.

When it is desired to control the instant of the spark production more accurately than is possible with a circuit breaker having the mode of operation just hereinbefore described in connection with Fig. 3, a timing device comprising a rotating contact arm and an" angularly shiftable contact member adapted to engage said arm, constructed substantially as above described in connection iwith F igs.. 1 and 2', may be employed,

Suchitiming device may be readily applied ,to the embodiment of my invention shown in Fig. 3 by any person skilled in the art to which my invention pertains in view of the description of the same herei-nbefore contained, and it will not be necessary for me to described the construction of the same in further detail.

In Fig. 4 is illustrated the preferred manner of applying my invention for the purpose of energizing the ignition system of motors having more than one cylinder. In such figure is shown a magneto embodying my invention, combined with a distributing and timing device, hereinafter called adis tributer-timer, adapted to electrically-con nect the said magneto successively in' opera-' tive relation with the ignition systems of difl'erent engine cylinders and when so 0611 nected to render said magneto effective to energize the same. Referring to said Fig. 4, 61 represents an armature revolubly mounted in a magnetic field situated and const-ructed preferably substantially like that shown in Fig. 1. Said armature is mounted by means of journals 62 in the bearings as, and embodies a core portion 64:, on which are coiled current generating winding, comprising an energizing winding 65, and an auxiliary winding 66. One terminal of said energizing winding is grounded on the armature at 67, while the other terminal is in connection with a conducting plug 68, mounted in the left hand armature journal 62, as shown in said Fig. 4, and suitably insulated there-. from as by the bushing 69. A wiper 70 is resiliently held in engagement with the plug 68 as shown. In a similar manner one terminal of the auxiliary winding is grounded on the armature at 71 and the other terminal is conducted to a plug 72 preferably mounted in the right hand armature journal 62 and insulated therefrom by the bushing 73; a wiper 74; being also resiliently held in engagement wherewith as shown. As in Fig. 1, a binding post99, mounted for example, 'on the left hand bearing 63, is in electrical connection both with the terminal 67 of the energizing winding,'and with the terminal 71 of the auxiliary winding through the armature journal 62 and the bearing 63 which is in contact therewith. In operative relation with the magneto is combined a distributer timer adapted to electrically 0on nect said magneto to the igniting devices of the desired cylinder and contcmporaneo'usly with such conn,ection to effect the actuation of the devices by which said magneto is rendered operative to produce a spark at such ignition devices. In general said distributer timer embodies arotating member carrying contact making arms, hereinafter called timer arms, and a stationary member or casing carryinga plurality of insulated contact blocks with which said timer arms "are adapted to engage, and in consequence of such engagement to establish the electrical connections as hereinafter more particularly set forth. In said Fig. 4 is shown a distributer timer as preferably constructed for use in combination with a-magneto for the purpose of energizing the ignition systems of a four cycle motor having four cytlmders.

As appears in said figure the di ributer tuner comprises astationary member or casing 75, preferably if insulating material and carrying eight contact blocks 76, 77 78, 79,

80, 81, 82, and 83 as shown. Such contact blocks are two .kinds, the distributer contacts 76, 77, 78, and 79, and the timer contacts 80, 81, 82, and 83; the distributer con- .tacts being disposed at substantially. equal angular intervals of approximately 45 over substantially concentric with the circumference on which the bearing surfaces of the .di-stributer timer contacts. are disposed, so

that as. said rotating member revolves each of the-timerarms carried thereby in turn successively engages with each of the distributer contact-blocks and with each of the timer contact blocks. Said rotatingmember is preferably positively driven so as to ro- -tate ata definite relative speed with referencesto" the armature. Preferably said rotatmg member is gear driven from said mature and n the modificatlon of my invention now under description is assumed to rotate once-in every four revolutions of the armature,'it being further assumed. that the magneto armature is driven at one half the speed as that of'the motor. At 86,?57, 88, and 89 are represented induction coils which are adapted respectively to energize spark points 90, 91', 92, and 93, preferably carried by spark plugs located in the dif ferent cylinders of the engine and connected with the secondary windings of said induc-' tion coils by appropriate electrical conductors; The distribut er contact 76 is electrically connected with one terminal of the primary winding of the induction coil 86, the other terminal thereof being electrically connected to a conductor-94. In a similar manner the distributer contact 77 is electrically connected to said conductor 94 through the primary wind of the induction and the distributer contacts 78 and 7 9 ar in electrical connection with said conductor 94 through the induction coils 88 and 89, respectively. Said conductor 94 leads to the wiper/Z0 through separable contacts, of which one 'is carried upon a contact screw 95 and the other upon a movable armature 96 forming apart'of an electrically actuated circuit breaker which; is actuated by an electromagnet 97. Preferably a condenser 98 is connected in shunt around said separable, contacts. The binding post 99 is electrically connected with the rotating member of the distributer-timer and is therefore in electrical communication w1th each of said timer arms 84 and 85. Itis thus apparent that as the rotating member of thetimer arm revolves, the energizing winding 65 will be placed successively in series with each. one

'of the induction coils. The timer. contacts 80, 81, 82,- and 83 are preferably collectivelyelectrically connected to a conductor 100 which leads through the winding of the electromagnet 97 to the wiper 74. It is therefore apparent that when either of the timer arms engages with any one of the timer contacts, the auxiliary winding 66 on the armature will 'be placed in series with the electromagnet 9S. Inasmuch as the timer contacts and the distributer-contacts are arranged in pairs, of which each member occupies approximately diametrically opposite positions, the two timer arms will con temporaneously engage the timer contact and the distributer contact comprising one pair. Furthermore each pair of contacts will become engaged in succession as the r'otating member revolves, each pair being so engaged twice during each complete revolution of said rotating member. Preferably the distributor contacts have a contact sur face extending over a greater are than that of the timercozitacts, and the same are so located with respect to the timer contacts that one timer arm of the rotating member engages the same slightly before the other timer arm engages the timer contact, Which is paired with the same.

The embodiment of -my invention just hereinbcfore described, operates in the following manner: As the motor rotates the armature is revolubly'driven thereby, and such revolution will produce analternating electric current in the generating windings; such current flowing first in one direction during one-half of a revolution of the armature, and inthe reversed direction-during the other half of such revolution and in either case attaining its maximum intensity of flow as the generating windings carried on the armature reach a definite angular position with reference to the magnetic field ample, engages the distributer contact 76.

Such engagement will place the energizing winding 65 in series with primary winding of the induction coil 86 and the current pro- :duced in said energizing windingv will flow through said coil and; energi'e the same,

Following such 'energination .o the induciao 55 producing function oi my 6 contact 79, and the timer contact 82.

tion coil 86 the other timer arm 85 will engage the timer contact 80; the moment ofsuch engagement corresponding to the instantwhen it is desired to produce a spark at the spark points 90 to which induction coil 86 is connected. In consequence the auxiliary winding 66 will be connected in series with the winding of the electromagnet 97 by which the circuit breaker is actu- J ated. The flow of the current generated in said auxiliary winding as the armature rotates, will magnetize the saidelectromagnet and in consequence will. cause the sudden separation of the contacts carried on the movable armature 96 and the contact screw 95, thus suddenly opening the circuit in which is comprised the energizing winding and the primary winding of the induction coil. As a result of the sudden opening of the circuit just mentioned, high tension current will be induced in the secondary winding of the induction coil and an electric discharge at the spark points 90 will be produced which will explode the charge of combustible in the motor cylinder in which said spark points are located. The con,- tinued rotation of the armature through approximately one half of a revolution will bring it into a position in which a current,

generated in the energizing winding in consequence of such rotation and flowing in a reversed direction to that usthereinbet'ore mentioned, will approach its maximum intensity of flow. As the armature appreaches such position of maximum flow, the

timer arm 84, assuming the same to rotate in an anti-clockwise direction, will have rotated approximately 45 and will engage the distributor contact 77, thereby causing 40 the induction coil 87 to become energized by 'such How of current. Immediately after such energization of the induction coil 87, the timerarm 85 will engage the timer contact 81, again completing the circuit through the electromagnet 97 and causing the actuation of the circuit breaker in a manner analogous to that just l'iereinbetore described, and thereby producing electric discharge at the spark points 91. Thus the alternating flows of current produced in the repeated twice during the lion oi the arn'iaturc,

will take place, first, reason'ot' the contemporantams engagement of timer arnisSiv and S5, rcspectivelv, with distributor contact 78,'and the timer contact 81, and second, at spark point 93 by reason of the contcn'iporaneous engagement of said timer arms respective y, with the distributor Durat spark points 92 bying the next ensuing two revolutions of the magneto armature, the timer arms of the rotating member'of the distrlbuter tuner,- although occupying positions diametrically ogposite to those in which they have ust been described will again, engage in succession with thetimer contacts 80, 81, 82, and 83, and contemporaneously with such en gagement will also engage with distributer contacts 7 6, 7 7, 78, and 79, respectively, and in consequence the electric discharges at. the spark points 90, 91, 92, and 93 will be repeated.

If desired, means maybe provided for angularly rotating stationary member of the distributer timer within predetermined limits and thereby to hasten or delay the time of engagement of the rotating timer arms with the distributer and timer contacts. In consequence the spark may be advanced or retarded as desired within the limits of ad-' justnint. Moreover the advance or retardation of the spark may be also secured by providing means whereby the timer contacts alone are angularly movable, the distributer contacts remaining substantially fixed, the change of position in such timer contacts operating to vary the instant when the circuit breaker is actuated and the inductive means rendered operative to produce a spark.

The changes required in order to apply the modifications ust hereinab'ove mentioned to the embodiments of my invention described can be easily effected by any one skilled in the art and I do not deem-it necessary to describe the same in further detail.

It will be observed that in any of the embodiments of my invention hereinbefore. described the reactance which is offered by the winding of the magnet by which the circuit breaker is actuated, is not included in the circuit through which flows the current, which energizes the inductive means em ployed to produce the high tension current. Hence the'fluetuat-ions of said. energizing current are not subjected to the retarding influences of said reactance and the electric activity of the said inductive means is'in consequence, considerably greater than would bethe case were such magnet winding connected in series with the circuit by which the inductive means is energized. The use of my invention, therefore contributes to materially increase the efliciency of the ignition system as a whole, besides supplying a simple and easily controllable manner of regulating the instant of spark production.

Vhile I have described my invention more particularly as applied in connection with an induction coil of the common type having a primary and a secondary Winding, the principle of my invention may be readily applied by any one conversant with the art: to any other form of current inducing means means including an energizing @i 111g prim11:31wiiLv .m Whic j'iha ariatio ns 0f the current flow flew, said instrumental Zing circuit, caused insf rm aaiapie-i to tanbrol such cuuent ilgas mcluchng an.

Electric circuit for ncumiing 't-"ne 5211119, are

utilized to induce an electric'current 0f high pot gntial in said coil. I

1 c1a1m 1,, in comblmtlon Wlth a cw sh'umen'mlities for wntrofiing thd current in 5 Air. energizing slrcui, sa strumentaliti em $196 fa? actuating thg an bne pcrtian of Sam V wally connectad. 1n sm r relartmn said -energizing circuit, motile? 00; of said windings cmmecwci in gizing relation Wifih s'aic? circuit; 2. in Combination @3111 an eleciric circuitfm; ner?" and a] circuit intermpbing flu in said en ircuit, 52 7 ing :1 nmgnetizing circuit 1' same; an lm-n" gg c ne l ating ym wmcungs 0 ergizing 1511 said mm.

, and another porn-0n 0.6. sama x 1516 11 1 magnatizmg 1, in 410mblna iilmi an mduah nzwing wiubh: cm're ings grouped. intezz plum distinct portionigml an 11 meeting one por lion at ing winding 5s i n, gnerglzipg Sal-cl 3 My Wmdmg, mrmn A mtercnlated 1n sald enarglzl ng clr mm'smd circuit interrupter including; net for actuatmg the .s'anm arm. ammrw discharge a mvomble generatig; an energlz- =11 elec'tmmag

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