US1039454A - Magneto-electric machine. - Google Patents

Description

F. R. SIMMS. MAGNETO ELECTRIC MAGHNE.

APPLIGATION FILED 00T.9,1911.

1,039,454. Patented Sept. 24, 1912.

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SECON DALY E'. R. SMMS.

MAGNET@ ELECTRIC Mmmm.

APPLTO FILED OGT,9,1911. ,@39,454. Patente Sept. 24, 1912.

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UWE/W01? B @@mw@ www MAGNET() ELECTRIC? MACHNE.

LPLICATON PIL ED OGT.9,1911.

Patented sepn24,1912.

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R .O U m y m -UNTTED sTATns PATENT onrion.

FEDE'RICK RICHARD SIMMS, OF KILBU'BN, LONDON, ENGLAND, ASSIGNOR T0 SIMMS MAGNETO COMPANY, OF NEW YORK, N. Y.

MAGNETo-ELnd'rnrc MACHINE.

specication' of Letters Patent. Patented Sept. 24, 1912.

Application filed October 9, 1911. Serial No. 653,539.

To all/whom t may concern:

Be it known that I, Fnnnniucic It. SIM-Ms. n subject of the King of Great Brit-ain, resid ino' at Wilbeck `Works, Kimberley Road, l" illesden Lane, Kilburn, London, England,

have invented certain new and useful Improvements in Magneto-Electric Machines; and I do hereby declare the following to be ay full, clear, and exact description of the invention, such as will enable others skilled in the art. to which it appertains to make 4and use the same.

This invention consists in the novel features hereinafter described, reference being had to the accompanying drawings which ,illustrate an embodiment of the invention which I .have selected for the purpose ot' illustrating the same and the said invention is fully disclosed in the following descrip? tion and claims.

Referring to the drawings, Figure l rep-- rcsents a vertical longitudinal sectional vien' of a high tension magneto electric machine embodying my present invention. y Fig. 9. is an end elevation of the same. Fig. 3 is a partial end elevation with the commutator removed. Fig. 4: .is a plan view of the commutator detached. Figs. 5 and 6 are sectional views on the lines 5-5 and 6-6 ot Fign' respectively. Fig. 7 is matic represent-ation of the circuits, showing the switch in the accumulator position.

2 vThis invention relates to high tension y'magneto electricmachines lintended for use le'sIecia-lly in a dual ignition system in which a attery or accumulator is employed for the purpose of energizing the primary winding of the armature of the high tension magneto electric machine when the magneto is not in operation, the armature acting in such case as an induction coil and enabling the 'iguiting sparks to be produced by interrupting the primary current by means of an automatic trembler and distributing the high tension current produced in the secondary winding to the ignition plugs in the usual manner, a suitable switch being provided for y closing the circuit through' the magneto alone or through the battery and trembler,

ticularly to said switch having also an oil position in which the battery is cut out of action and the magneto is earthed in the usual way.

My presentinvention addresses itself parthe provision in a magnetoot and main body of the contact breaker.

a diagram-Y the kind just described of a. cominutator, the construction and operation of which is hereinafter more fully described.

In order that my invention may be fully understood, I have selected for purposes ot illustration an embodiment of tliesamecon sisting of a magneto electric machine of the well known Simms high tension type containing my present invention.

In the accompanying drawings, 1 represents the permanent magnets, 2. the armature comprising the primary and secondary coils 3 is the high tension terminal of the collecting'brush holder 4.

5 is the distributer provided with terminals a, I), c and d for distributing the high tension current to the various spark plugs.

One end of the low tension or primary winding of the armature is connected to the armature core, and thus to the frame of the magneto, and the other end is led through the hollow spindle of the armature to a contact breaker carried at one end of the armature shaft and is connected to a fixed partof the contactl breaker, to wit, a metalblock 6, see Fig. 3 which is secured to but insulated from the supporting disk 7, which forms the The block 6 is provided with a platinum pointed screw 8 and a bell crank lever 9 carries a second platinum pointed screw 10 adapted to make contact at the proper time with the screw or contact S. The bell crank lever J is pivotally mounted on the disk 7 and is` electrically connected to the frame ofthe magnete. .The bell crank lever 9 is also provided with a fiber heel 11 which is adapted to engage two segmental surfaces 12, 12 on the inner peripheral face of a ring 13 surf rounding the contact breaker and secured to or forming part of an annular casing 14 revolubly mounted with respect to the frame of the magneto and to which is connected the timing lever 15. The segmental surfaces are separated by recesses 16, 16 intowhic vthe fiber heel 11 may eXtend,'thus permi ting the contacts 8 and 10 to come togethert and said lcontacts are separatedand held separated Whenever the fiber heel 11 is in engagement with .either of the segmental surfaces 12, 12. This sudden interruption of the primary or low tension circuit induces a. current ot high potential in the secondary or high tension circuit, producing a aming of great heat at-the points of each ot sparking plugs in turn through the of the distributer. he parts hereinbetore described are the usual parts et a high tension electric mag neto of the Simms type and do not in themselves term part o1 my present invent-ion.

rlthe contact breaker is provided With a pair ot brushes for engaging the commuw, tator hereinafter described, one or said brushes being carried by the bloclr 6 and the other by the disk 7, said brushes being arranged in diametrically opposite positions With respect to the axis of said disk.V ln the present instance each brush consists oit a cylindrical block or carbon 17 and 18 respectively the brush i7 fitting in a cylindrical casing` secured to the block 6 and the brush 18 being similarly mounted in a casing on 20 the disk 7, said brushes beingprovided With the usual pressure springs located in said casings in rear of the brushes.

The annular casing 14 is provided With a cover containing the commutator, said cover comprising a metal ringjY 20, see `Figs. Ll, 5y

and 6 and Fig. l, closed by a circular body Q1 of insulated material fitted therein. @n the inner tace of said insulated material, a tiat metal annular plate, preferably of brass, is embedded in and supported by the insulat ing material and said metal plate is then savved in tivo directions across the center, thus dividing it into tour pieces which are permanently secured to theinsulating ruaterial and have their inner faces inthe same plane. Two of these segments are connected to the battery or accumulator or other eX- traneous source of current and the remaintwo are not connected. ln the drawings, 23, 24 and 25 repro sent the segments of the coininutator, of. which segments 22 and 24 are provided with binding' lposts 22. and 24e respectively. While the commutator may befornied by 4e5'providingv a ring of greater thickness than required, which ringl is tirst savved partially through and then embedded inthe insulating material-2l, the .solid portion of the ring is thencut away leaving the separate 5G ments separated by the savv cuts indicated at 26., Fig'. il, which are only Wide enough for good insulation. This method oi construc- I tion; insures the faces of the segments which engage the brushes l? andl, being in the same plane; v Moreover by providingthe d isconnected segments Q3 and 25 between the 'connected' segments 22 and 2e the.brushes fwill alwaysrub over ,the same inetalliematerial during thel rotation of the Yarmature 'and' all vthel brush engagingporticns oit the commutator 4willvvear evenly, Which isnot'4 'thecase VWhere the brushes pass from .a metal "segment over'intervening portions ot'other f rr'i'aterial.` The -savv cuts being so narrow,`

55 the brushes which are ot considerabl Greater y for thispurposelF prefer to employ the prises tivo forked contacts 36' and 37 inoui..

`nected vvit-hithe contact tl. liTith Athe n y y v1n the position shown in Fig. /,inrvhicb Width readily/bridge over the. makingl the operation ot the coininutat noiseless and trictionless-2 las possible. p .i length otthecon M,ted segments 2Q 2' and their arrangement in the commutat is such that current can only pass from t battery through the primary coil of t armature when the contact breaker poir ts and l0 are. separated, as these points are i parallel with the conunutator segments ano consequently Contact between them 'would short circuit the commutatorseginent and cause an excessive"`current through the accumulator due tod'ecreased'resistance in the circuit. This necessitates a' considerable 5 length ot insulationbetyveenthe segments 22 and 24 which. ,is",supplied bythe' insulated and non-connected segments and 25, rlhe position' of the'vcoxnmuta'tor with respect to the casing' i4, is determined by any desired means.' l'nthis instance a pin is provided on one' of said parts to a recess in the other, said pin being shown on the casing Bland the -recessQO' being shown in the ring ofthe 'commutator.v i

ln the center ot the conunutator in ing block Qlis a brush holder??Y carry a. spring' actuatedbrush 28 1which makes conm tact. with a serein7 y29 passing through the contactbrealrer inlan axial d'irectionand securing'the same tojthe armature spindle. The brush yholder 27 projects from the ezt-- terior ot the linsulating`bloeit- '21 and is ene gaged by a contact 3,0:on the outer end et a spring plate lpi'votally connected to the frame ofthe magneto. rlhis spring serves the vdouble purpose lot securing2 commutator in place, asV clearly shown l? 2,y and also forming' a' connection tor earthing the magneto.'

In Fig. 7 ,lt'have illustrated diagra' unat'- cally the circuits includingjthe controlJ`- switch ,for the magneto and'lacbmulator circuits. 'This svvitch islillustrated atf'fi 'end l ,oit switch' rwhich forms the subject me my application" `tor Letters'latent ot 'United States, Serial No. 596,638, tiled l0, 19M). The switch, however, fol part ort my 'present invention and is orly ce scribed yherein e tor purpose 'ot cle As indicated "in 'l -gi Y, the switch conifed on switch bar for joint'inovement, but

insulated from each. other.` v4The switch' is lalso provided 'with co'ntacts38, 39',"a0,*fil

and i2 and the forlr'edfcontact't corr nectedvwith a trembler@ which' is also co non accumulator is inQcirouit, as" in startin automobile engine,v the 'circuit is as :tolle as: from -tlieaccumulator by vvfire 50 to co' t I-2,through the forked Contact 3T? to co.

41, thence through the trembler to the other forked contact 36, thence to contact 3S, thence by wire 51 to binding post 24a and segment 24, thence to brush 1S and to earth, to wit, the frame of the magneto which is represented in the diagram by a dotted line; thence by wire 52 to the primary coil, thence by wire (thro-ugh the hollow spindle of the armature) to the block 6 of the contact breaker', thence to brush 17, thence to commutator segment 22, thence through binding post 22 and wire 54 to the accumulator. When the Contact breaker is in reverse position the position of the brushes will be reversed and thus the armature will always be magnetized in the proper direction, that is first in one.direction and then in the opposite direction, thus always tending to increase the magnet-ization of the magnets.

The secondary or high tension Winding of the armature has one end connected with the primary or low tension winding and through this winding to earth,.the other end of the secondary or high tension winding being connected to the high tension terminal 3 and thence to the distributer from which the current is distributed to the spark plugs indicated at 60, 61, 62 and 63.

By swinging the switch lever so as to bring the forked contact 36 into engagement with the contacts 39 and LLO, the magneto will be earthed and the accumulator circuit broken. By moving t-he switch still farther in the same direction, the cart-hing circuit of the magneto will be broken and the magneto circuit restored.

It will be observed that the battery ignition is timed a little later thanthe magneto, this being necessarily so, as otherwise the contact breaker on the magneto would tend to short-circuit the self-starter just at the time when it was being brought into oper ation. The result, however, is thatimmediately after the engine has got under way by virtue of the battery and coil, the magneto takes up its ordinary function, and does the work of ignition, even though other later sparks may still be caused to jump across the plugs under the immediately following influence of the battery system.

What I claim and desire to secure by Letters Patent is l. In a high tension magneto electric machine for a dual ignition system, the oombination with a rotary armature, of a rotary part operatively connected with said armature, a pair of brushesv carried by said rotary part and electrically connected in circuit with the primary coil of the armature, a commutator provided with a plurality of metallic segments forming substantially a circle, the surfaces of said segments forming ,f 'the entire brush engaging surface of the commutator, said segments being insulated from each other and certain of said segments only being provided with means for connecting them electrically with an exterior source of electrical energy. Y

2. .ln a ,high tension magneto electric ma-` chine foi' a dual ignition system, the combinat-ion with a rotary armature, of a rotary part operatively connected with said armature, a pair of brushes carried by said rotary part and cuit with the primary coil of the armature, a commutator provided with four segments arranged in a substantially complete circle and having their ends separated a shorter distance than the width of said brushes, said segments being insulated from each other, and two alternate segments being provided with means for connecting them electrically with an exterior source of electrical energy.

3. In a high tension magneto electric machine for a dual ignition system, the combination with a rotary armature, of a rotary part operatively connected therewith, two brushes carried by said rotary part and electrically connected in circuit with the primary coil of the armature, a commutator comprising a block of insulating material having a metal ring connected therewith, said ring being divided into four separate segments, two only of said segments being provided with means for connecting an exterior source of electrical energy thereto.

4f. In a high tension magneto electric machine for a dual ignition system, the com-- bination with a rotary armature, the primary coilof which has one end connected to earth, of a rotary part operatively con- Y nected with the armature, two brushesv ,car-` ried by said rotary part, one of said brushes electrically connected in cirbeing connected'to the primary coil, and

the other to earth, a commutator provided with contactsegments adapted to be connected in circuit with the poles of an accumulator, and provided with a brush holder and brush engaging a portion of said rotary part connected with the primar coil, and a detachable arm connected wit the frame of the magneto and detachably engag-l ing said commutator brush holder, for earthing the magneto.

5. In a high tension magneto electric machine for a dual ignition system, the combination with the rotary armature, of a rotary circuit breakerv connected therewith and provided with a fixed and a movable contact in circuit with the primary coil of the n armature and means for operating said movable contact as the contact breaker is rotated,

vtwo brushes carried by said contact breaker,

one ofwhich is electrically connected with each of said contacts, a commutator provided with brush engaging contacts in circuit with an exterior source of electrical energy, said brush contacts `being so located with respect to the means ,for operating the `movable contact of the circuit breaker, as

SIL"

, connected with said casing, brushes carriedl to 'maltecontact with said brushes when the contacts of the contact breaker are open,

said brush engaging contacts being insulated -from eachother and Widely separated.

G. ln a hi h tension magneto electric machine for a d nation with the rotating armature, 'of a rotary ycircuit breaker` connected therewith,

- and 4provided with a fixed and a movable contact, in circuit Withvthe, primary Winding of the armature, a casing movable in a rotary directionprovided With means for operating: the movable contact, a timing lever nation With-therotating armature, of a rofeo tary .circuit breaker connected therewith, andfprovided with a fixedl and a" movable contact, in circuit with the primaryvvvinding of the armature, a casing movable in a rotary 4direction provided vvithnleansl for operating the movable contact, a timing lever connected with said casing, brushes car- 1ried-byfsa1d contact breaker, andy-connected in circuit-With the primary Winding of 'the armature, a detachable -commutator providedwith separated contacts for engaging said brushes, means ,for connecting said contaets with. an external, source of electrical energ ,means foi-detachably securing said uall ignition system, the combi` commutator to the timing lever casing, and interlocking devices on said casing and coinmutator for determining the relative positions thereof. t

8. ln a high tension magneto electric machine for a dual ignition system, the combination with the rotating armature, or" a r0- tary circuit breaker connected therewith, and provided'with a xed and a. movable Contact, in circuit with the primary Winding of the armature, a casing movable in a rotary direction provided with means for operating the movable contact, a timing lever connected VWith said casing, brushes carried by said contact breaker, and connected in circuit With the primary Winding of the armature, a detachable commutator. forming the cover for the timing lever casing, and inclosing said contact breaker, said comma conta/cts insulated from each other and so located as4 to make contact with said brushes onlyl when the contacts of vthe Contact breaker are separated, a brush holder and `brush mounted in said comniuta tor, said vbrush engaging a part onl lsaid lcontactbreaker connected vrith the primary Winding 'andsaid brush holder 'having a part extending to the exterior' of the commutator andan arm securedto yand 4connected'electri'callywith the magneto traine, and having a part at'its outer endto engage said brush holder, to lmalte contact therewith and to hold the commutator in position,

in therpresence of ytwo Witnesses. l FREDERCK' 'RCHARD 'Smil/l,

Witnessesr" ff, f f."

' ARTHUR'V.W.COYE, t .f vRICHARDYtaaMief.7 f,

. Contea of thiefpatent maybe obtained for ve cents each,y b5/addressing thev @ominitatouerV of latents,

Washington, D. @.21 v 4 tator being provided With brush engaging 1 t In testimony whereof 'l aix my signature,

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