US1304782A - Consin - Google Patents

Description

A. C. KLECKNER AND W. BROWN.

MAGNETO.

APPLICATION FILED JAN-17.1919. 1,304,782.

Patented May 27, 1919.

7SHEETS-SHEET 1.

miii'r A. C. KLECKNEE AND W. BRGWN.

MAGNETO.

. i I APPLICATION FILED JAN.17\l9|9\ I 1,304,782. Patented May 27, 1919.

ISHEETS-SHEET 2.

A. C. KLECKNER AND W. BROWN.

MAGNETO.

APPLICATION FILED JAN. 17. 1919.

Patented May 27, 1919.

I SHEETS-SHEET 3.

mu @A WW b J b m 0 5 k QR A. C. KiLECKNER AND W. BROWN.

MAGNETO.

APPLICATION FILED JAN. 17.19I9.

Patented May27, 1919.

7 SHEETS-SHEET 4.

A. c. KLECKNER AND w. BROWN.

MAGNETO. APPLICATION FILED JAN. IL 1919- Patented May 27, 1919.

TSHEETS-SHEET 5.

A. c. KLECKNER AND w. BROWN.

MAGNETO.

APPLICATION FILED JAN. 17.1919. 1,304,782.

Patented May 27, 1919.

-? SHEETS-SHEET 6.

A. C. KLECKNER AND W. BROWN.

7 MAGNETD. APPLICATION FILED JAN-17.1919. 1,304,782. Patented May 27, 1919.

TSHEETS-SHEET I.

UNITED STATES PATENT OFFICE.

ARTHUR C. KLECKNER AND WALTER. BROWN, 01 RACINE, WISCONSIN, ASSIGNORS TO WEBSTER ELECTRIC COMPANY, OF BACINE, WISCONSIN, A CORPORATION OF WIS- CONSIN.

MAGNETO.

Specification of Letters Patent.

Patented May 27, 1919.

Applicationfiled il'anuary 17, 1919. Serial No. 271,576.

To all whom it may concern:

. Be it known that we, ARTHUR C. KLEGK- NER and WALTER BRow I, citizens of the United statea residing at Racine, in the county of Racine and State of Wisconsin, have invented a certain new and useful Improvement in Magnetos, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to improvements in magnetos and is especially concerned with improvements upon magnetos intended to 'be used on automobiles and other vehicles propelled by internal combustion engines.

The objects of our invention are:

First: To provide a magneto which is simple in design, compact, andin which the parts are so assembled relatively to each other as to permit economical manufacture;

Second: To provide a magneto so constructed as thoroughly to exclude dust and moisture from the parts in the interior thereof;

Third: To provide a magneto comprising a rotary armature and a sleeve surrounding said armature, and provided with soft iron pole pieces which may be shifted by movement of the sleeve relative to the armature, so as to time the generation of maximum voltage in the armature in order to time the explosion of the engine, the construction of the armature sleeve being such as to permit these two members to move relatively to each other and in close proximity to each other, in order to reduce the air gap between the sleeve and the armature;

Fourth: To provide a magneto embody ing' an armature andsleeve construction which can be easily and economically manufactured;

Fifth: To rovide a magneto having a novel formv o armature;

Sixth: To provide a magneto having a novel lubricating" system;

Seventhz'To provide a'magneto of the armature and sleeve type having novel means for conducting current from the armature to the means for transforming the armature current from low to high potentia Eighth: To provide a magneto comprising a distributor, the distributer arm or contact being driven from the armature shaft through a helical gear connection in which the distributer arm and the contacts with which it co-acts are so located as to permit a compact arrangement of the parts and a symmetrical casing for the magneto.

Further objects will appear as the description progresses, reference being had to the accompanying drawings, in which Figure 1 is 'a plan view of our improved magneto;

Fig. 2 is a side elevation, portions thereof being broken away;

Fig. 3 is an end elevation of our magneto with the cover removed and a portion of the timing cap or lever broken away;

Fig. 4 is a perspective view of the cover of our improved magneto;

-Fig. 5 is a central longitudinal section through our magneto;

Fig. 6 is a central longitudinal sectional detail taken upon a line corresponding-to line 66 of Fig. 3;

Figs. 7, 8 and 9 are vertical transverse sections taken upon lines .77, 88 and 99 respectively of Fig. 5;

Fig. 10 is a sectional detail taken upon line 1010 of Fig. 8;

Fig. 11 is a plan view of the distributer Fig. 12 is an enlarged sectional detail taken upon line 12-12 of Fig. 7

Fig. 13 is an enlarged sectional detail taken upon line 13l3 of Fig. 'i';

Fig. l i is a perspective view of a locking washer used in the construction of our improved magneto;

Figs. 15 and 16 are side elevations of the timing sleeve which we employ in our magneto, these two views being taken at right angles to each other.

Figs. 17 and 18 are end views respectively of the opposite ends of the timing sleeve;

Fig. 19 is a transverse section of the timing sleeve, taken upon line 1919 of Fig. 16;

Fig. 20 is a plan view of one end of the timing sleeve embodied in our magneto, showing the interrupter mechanism mounted thereon;

Figs. 21 and22 are side and end elevations. respectively of the interrupter lever;

Fig. 23 is a transverse section taken upon line 23 of Fig. 5; and

Fig. 24 is a more or less diagrammatical sketch showing the electrical connections of our improved magneto.

Referring to the drawings and for the time being to Figs. 1 to 5- inclusive, our improved inagneto comprises a two part casing, one part 30 of which will be referred to for the sake of convenience as the. base member, and the other part 31 of which will for a similar purpose be referred to as the cover member. These two members are separated along .a line or plane which, as shown in Fig. 2, is inclined from one end of the magneto to the other, the lower end of'this separating line or plane being at the end at which the distributer and interrupter mechanisms are located. This construction permits easy access to the interrupter mechanism for the purpose of adjustment and repair. The cover member 31 is secured to the base member 30 by means of the screws 32, as shown in Fig. 2 in full lines, and in Fig. 5 in dotted lines. The lower edge of the cover member is grooved as shown at 33, and receives a suitable gasket, which, when the two casing members are clamped together by means of the screws 32 thoroughly seals the casing against ingress of dust and moisture. The base portion of the casing comprises the top, bottom and side walls 34, 35, and 36 respectively forming a compartment for receiving the armature, which will be described later. Thebottom and side walls 35 and 36 respectively are extended beyond one end of the top wall and provided with. an end wall 37 The end of the base member 30 opposite the end wall 37 is provided with an opening, the purpose ofwhich will be described later on. Both portions of the casing are formed of die castings, and soft iron pole pieces 38 (see Fig.

9) are cast into the base member betweenthe top wall 34 and the bottom wall 35, the opposed inner faces of these pole pieces being suitably conformed, aS shown in Fig. 9. A pair of U magnets 39 are disposed with their poles in contact with the pole pieces 38.

A timing sleeve 40 is rotatably mounted between the pole pieces 38. This timing sleeve, as shown in Figs. 5 and 15 to 19 inclusive, comprises a cylindrical die casting having the ring-shaped end portions 41 and 42 joined by the annular segmental side members 43. Alternating with the side members 43 are other annular segmental side members 44, the ends of which are-dovetailed into the rings 41 and 42, as shown at 45. These side members 44 are formed of soft iron and form pole pieces which, by the rotation of the sleeve 40, may be shifted relative to the stationary pole pieces 38 and the armature to time the ignition in a manner well understood by those skilled in this art. Ring-shaped bearing members 46 and 47 are die cast onto the opposite ends of the sleeve, and co-act with rings 48 and 49 die cast into the base member 30. The rings 46, 47, 48, and 49 are made of brass, steel, or other suitable metal forming a good bearing surface.- The rings 47 and 49 are provided with end flanges 50 and 51 respectively forming end thrust bearings for the sleeve 40.

An end ring 52 is secured to the outer end of the sleeve 40 by means of screws 53, as shown in Fig. 5, and receives the ball races 54 and 55 which are spaced by the bearing balls 56. These races and balls form a .ball.

'in closes the ball races'59 and spaced by the bearing ball 61, which together form a bearing for the trunnion 62 at the inner end of the armature.

It should be noted that the ball races 54 and 55 and 59 and 60 are so formed that any wear upon these races can be compensated for by moving the race 54 inwardly. This is accomplished by means of the screw plug 63, which has screw-threaded engagement with the outer end of the bearing ring 5 and bears against the outer end of the race 54. rotating the plug 63 in the proper direction to move it inwardly, the ball race 54 can likewise be moved inwardly, and thus compensate for any wear upon the races 54, 55, 59 and 60. In order to secure the plug 63 in any of its adjusted positions we provide it with a pin or pins 64, which co-act with a locking washer 65, shown in detail in Fig. 14. This locking washer is provided with a plurality of openings 66 lying upon the circumference of a circle concentric with the center ofthe washer 65, and a pair of spring tongues 67 having portions projecting from both sides of the washer. The washer is also provided-with an outwardly extending lug or tongue 68, which engages a correspondingly formed recess in the inner side of the ring 52 (see Fig. If a line 69 be drawn through the center of the tongue 68 and of the washer 65, as shown in Fig. 3, it will pass between adjacent openings at a point one fourth of the distance between the sides of two of the openings 66. By thus to the washer 65 by steps corresponding to one-half the distance between the holes 66 adjustment of the plug relative to the washer would. necessarily have to correspond to the distance between the openings 66. It will therefore be seen that by providing the washer 65 with openings 66, the centers of which are offset relative to the line passing through the center of the tongue 68 and the center of the washer, and making the washer reversible, we have provided means whereby the plug 63 may be adjusted through small arcs and held in its adjusted positions, thereby permitting the adjustment of the ball race 5 by very slight gradations.

A thrust bearing ring 70 is secured to the open end of the base member 30 by means of screws 71 (see Fig. 3) and holds the sleeve 40 and its associated armature 58 in the base member. A timing lever 72, which also forms a cap for closing the open end'of the base member 30, is secured by means of screws 74 to the bearing ring 52. This timing lever is provided with an opening 75 for receiving any suitable or customary means for adjusting it.

From the above description it will be clear that when the timing lever 72 is adjusted angul'arly about its axis it carries with it the sleeve 40, and by thus moving the soft iron pole pieces 44 relative to the stationary pole pieces 38, proper timing of the ignition may be secured in a manner well understood in this art. We prefer to provide the inner face of the timing lever 72 with a groove 77 for receiving a gasket 78, to prevent any ingress of moisture or dust to the interior of the magneto. An 'arcu'ate shaped opening 79 is formed in the upper side of thesle'eve 40 to permit adjustment of the sleeve 40 relative to the grounding brush 80, which will be referred to more in detail later on. A second arcuate shaped groove 81 is formed in the lower side of the sleeve 40 and at the end opposite from the end in which the groove 79 is formed, to receive the sleeve 82 of-the lubricating wick 83 and permit the adjustment of the sleeve relative to this tube and wick. A second lubricating wick 84' projects through the 'arcuate shaped opening 85 in the end of the sleeve 40, as shown in Figs. 5, l7 and 18. The wicks 83 and 84 bear against the corners of the races and respectively to supply the ball bearings at the opposite ends of the armature with lubricant.

A hollow boss 90 projects upwardly from the bottom of the base member 30 and is provided with a pair of alined apertures 91 and 92 for receiving the end of the trunnion 62. The walls of the apertures 92 are not intended to serve as bearings for the trunnion 62, but receive the latter member more or less loosely. The lower end of the hollow boss 90 is closed by means of a cover plate 93, which is held in place by means of screws 94: or any other suitable means. This plate is provided with upstanding flanges 94 and 95 respectively, which fit tightly against the inner walls of the hollow boss. The llOllOWl boss and the cover 93 form an oil well or sump communicating with a recess 96 formed in the base member, and likewise closed by the cover 93. A duct 97 extending longitudinally of the base member provides communication between the oil well and the wick 83. A sump 98 formed in-the upper side of the bottom wall 35 serves to collect any excess grease which may flow into the sleeve through the wicks83 and 84.

The ,oil collectedin the sump- 98 is discharged therefrom through the hollow screw 99, as shown in Fig. 23. The bore of the screw 99 is partially filled with felt or other material 100 to exclude dust and moisture from the interior of the magneto. A pair of gaskets 100 and 101 prevent the escape of lubricant from the hollow boss along the trunnion 62. The upper wall of the hollow boss 90 is thickened and a bearing sleeve 102 extends therethrough. A shaft 103 is rotatably mounted in said bearing sleeve and is provided at its lower end with a helical gear 104, which co-acts with a helix105 cut in the periphery of the trunnion 62. A distributer arm 10% is secured to the upper end of the shaft 103 and carries at one end a cylindrical brush holder 105', ,in which is slidably mounted the brush or contact member 106. The contact member 106 is urged upwardly by means of the spring 107 confined between the contact member and the bottom of the brush holder 105. The sleeve 105 is provided with a. spring contact member 108, one end of which bears against the end of the contact member 109, which is rigidly supported in the block of insulation 110. The bottom side of the block of insulation is, as shown in Fig. 8, inclined from one side to the other side of the magneto casing so as to form an inclined race for the brush 106. The inclination of the shaft 103 is such that the end of the spring member 108 lies substantially in a line drawn through the axis of the worm 105 or the trunnion 62, and the downturned portion 111 of the contact mem ber 109 lies at substantially the center of the The lower ends of the shanks 113 are ari of these screws. being ranged on a circle substantially concentric with the downturned end 111 of the contact member 109. Consequently, as the distributer arm 104' is rotated, the brush 106 contacts successively with the lower ends of the contact members 112. By using the construction just described, in which the transmission between the trunnion 62 and the shaft 103 consists of a worm and worm gear, it is possible to change the ratio of the gear connection between these two members without altering their centers, by merely providing worms or gears of different pitches. By inclining the shaft 103 transversely of the casing, we are able to use a casing of minimum width and symmetrical inoutline. It will be clear that if the shaft 103 extended vertically, the casing for the magneto must either be made excessivelywide or unsymmetrical. alternatives by inclining the shaft 103 from the vertical.

The upper ends of the-contact members 113 are provided with binding nuts 115 by means of which'the conductors for convey-' ing the secondary current to the spark plugs can be secured to the contact members 112. The distributer arm 104 is provided With a counter-weight 116 to counter-balance. it against the effect of the sleeves 105' and 106.

A pair of metal plates 120 and 121 are secured to the inner end of the sleeve 40- by means of the screws 122, 123, and 124, each insulated from the plates by means of insulating sleeves, as shown in Fig. 7. The plate'121 is insulated from the end of the sleeve 40 by means 'of a sheet of insulation 125, and the plate 120 is insulated from the plate 121 by means of a sheet of insulation 126. The plate 121 carries a pivot post 127 upon which is pivotally mounted the interrupter contact arm 128, one arm of which carries a fiber plug 129 coacting with the cam 130 formed on the trunnion 62, and the other arm of which carries a con-tact 131, which co-acts with the stationary contact screw 132, which is adjustably mounted in the lug 133 formed inte- 133 is a kerf 134 therethrough portions, which can be grally with the plate 120. The lug divided by cuttin into two paralle \Ve have avoided both of these urged toward each other by means of the screw 135. This arrangement provides means for locking the screw 132 in any of its adjusted positions. The contact 131 is normally .held against the end of the screw 132 by means of a spring 136, one end of which is secured to the post 137, which is grounded in the end of the, sleeve 40. The plate 120 carries a spring pressed brush 138, which bears against the lower side of the arcuate shaped contact 139 (see Figs. '5 and 7 This contact member 139 is molded in and supported by the block of insulation 140, and has an integral extension 141, the upper end of which is electrically connected with the binding screw 142.

r The reference character 143 indicates a casing formed of insulating material, which incloses the primary and secondary coils of is not important, and has consequently not been illustrated in detail. The contact member 144 shown in Fig. 5 is connected with the ungrounded end of the secondary winding, and makes contact with the end portion 145 of the contact member 109. The portion 145 merely rests upon the end of the contact 144, so that it can be lifted therefrom with the cover member 31. The contact member is provided with an upwardly extending pointed electrode 146, which is spaced from the peripheral edge of the hole 147 in the cover 31. The end of the secondary winding opposite the end which is connected to the contact 144is grounded, and consequently the space between the electrode 146 and the edge of the hole 147 forms a spark gap which is designed to act as a safety spark gap for the secondary circuit. The spark between the electrode 146 and the edge of the hole 147 may be observed through a small window 148 formed of mica or any other suitable material.

One end of the armature winding is grounded upon the armature, as will hereafter be described, and the brush 80, referred to above, bears upon the outer periphery of the armature. The brush 80 is slidably mounted in a brush holder sleeve 149, which is grounded in the top Wall 34 of the base member. A spring 150 holds the brush 80 in contact with the armature in a well known A terminal clip 151 (see Figs. 5,

manner. 12 and 13) of copper or other material of high conductivity, establishes an electrical connection between the brush holder 149 and the binding screw 152, which is mounted in the insulation block 153 forming a portion vertical edges of the side members 159 and ing by means of the insulation sleeve 156, and carries a contact member 157 which contacts with one end of the conductor 158, extending lengthwise through the trunnion 62 and insulated therefrom as shown in Fig. 5. The inner end of the, conductor 158 is connected with the ungrounded end of the armature winding.

Before describing the circuit or electrical connections of our improved magneto, we shall describe the interrupter lever and the armature somewhat more in detail. Referring to Figs. 21 and 22 it will be seen that the interrupter lever 128 is stamped from a single piece of metal and comprises two side members 159 which are connected together along their upper edges by the web 160, which is integrally connected with the side members 159 part way around the registering openings 161' in the two side members which receive the pivot post 127. The web 160 is disconnected at its edges from the bent inwardly as shown at 161, then along the opposite edge-s of the side members 159, as shown at 162, then back across to the opposite vertical edges of the side members, as shown at 163, then along the latter vertical edges, as shown at 164, and finally across the lower ends of the side members 159, as shown at 165'. The portions 163, 164 and 165 form a pocket or recess 166 for receiving one end of the fiber plug 129 shown in Fig. 7. The fiber plug may be retained in place by means of pins extending through holes 167 in the side members 159 and holes 168 in the portions 161 and. 165 of the web. The interru ter lever just described can be easily, quiclily and economically stamped from sheet metal.

The construction of our improved armature will be easily understood from an inspection of Figs. 5 and 9. The ends of the trunnions 57 and 62 are both' grooved in the manner in which the trunnion 62 is shown to be grooved at 170 in Fig. 5. A rectangular casting comprising the side members 171 and the end members 172 is then cast around the ends of the trunnions 57 and 62 forming a rectangular frame, the side members 171 of which are segmental in cross s ection .as shown in Fig. 9. The side members and end members of this rectangular frame are preferably formed of brass, but may be formed of other materials if so desired. The armature core comprises a plurality of I-shaped laminations 173 around the stems of which is wound the armature winding 174. The cross members of the I-shaped laminations are segmental in shape and of just suflicient width to close the opening between the segmental members 171 of the rectangular frame, as shownin Fig. 9. In making our improved armature, after the frame member has been formed and the winding has been placed upon the I-shaped laminations, the assembled core and winding is simply dropped into the opening between the segmental side members 171 of the frame, and held in place by means of screws 175 or any other suitable means.

Heretofore armatures for magnetos have been constructed which comprise end pieces and side members, but so far as we are aware these members have never heretofore been formed integral with each other but have always been insulated from each other. lVe have found by experiment that this continuous metal frame surrounding the armature apparently has no detrimental effect upon the generating capacity of the magneto, and it eliminates many of the difficulties heretofore experienced in manufacturing armatures of this type.

Having thnsf described the mechanical features of our improved magneto, we shall now refer briefly to the electrical connections thereof, which we have shown more or less diagrammatically in Fig. 24. 1 In this figure the reference character 176 indicates the winding of the armature, one end of which is shown to begrounded on the armature at 177 and the other end of which is shown connected with one end of the conductor 158 extending through the trunnion 62 of the armature. The opposite end of this conductor is, as previously described, in contact with the spring contact 157 supported by the binding p0st'155, which, as described, is insulated from the base of the magneto. A conductor or cable 17 8 connects the binding post 155 with the binding post 154. This binding post 154 has connected thereto one end of the coil 179, which, for the purpose of convenience, will be called the energizing coil of our transformer or induction coil. The coil 179 is wound upon one leg of the transformer core 180 and the other end thereof is connected with one end of the coil 181 wound upon the leg 182 of the transformer. The coil 181 will hereafter be referred to for the purpose of convenience as the choke coil. The other end of the coil 181 is connected, as shown, to the binding post 152,-which, as heretofore described, is grounded through the clip 1,51 and brush holder 149. A conductor 183 connects the binding post 142 with the common point of the coils 179 and 181. A condenser 184 is shunted across the ends of the coil 181. The secondary winding 185, which is wound upon the same leg of the transformer as the choke coil 181, has one end grounded upon the choke coil 181, as illustrated, and the end 186 of th secondary winding is connected with the contact 144 which leads to the distributor.

In operation the contacts 131 and 132 are normally closed and the current generated in the armature will, for the purpose of convenience, be considered as flowing out through the conductor 158, from which it passes through the spring contact 157, conductor 178, binding post 154, energizing coil 179, conductor 183, binding post 142, arcuate contact member 139, interrupter contacts 132 and 131, to the interrupter leyer 128, and backthrough the frame of the machine to the grounded end of the armature. This current sets up a flux in the core of the transformer which is repressed by the choke coil 18 1, this choke coil being short-circuited through the followingpath: binding post 152, clip 1'51, brush holder 149, through the grounded portions of the frame, to the interrupter 128, contacts 131 and 132, arcuate contact 139,

binding post 142, and conductor 183. When the contacts 131 and 132 are opened the coils 179 and 181 are thrown in series and the current flows through these coils in such a direction that the current in the coil 181 assists the current in the coil 179 toset up a flux in the transformer coil. The path of the current when these coils are connected in series is as follows: from the armature winding to the conductor 158, spring contact 157, conductor 178, binding post 154, coil 179, coil 181, binding post 152, terminal 151, brush holder 149, brush 80, back to the armature winding.

Due to the action of the two coils 179 and 181 the flux in the leg of the transformer coil about which the coil 181 is wound will build up very rapidly, and this flux cutting through the secondary winding 185 will induce a current of high potential in this coil, which is conducted to the sparlg plugs through the conductor 186 and the distributing apparatus 1 I The circuit above described is substantially that shown in the application of Richard Varley, Serial No. 113,962, filed August 9,

1916, and since this application discloses and we. claim as new and desire to secure by Let:

ters Patent of the United States is:

1. A magneto comprising a two part oasing, the lower part of said casing having top, bottom, and side walls forming a compartment for receiving an armature, the said side and bottom walls being extended beyond one end of said top wall and provided with an end wall, the other end of said lower part being open, a magnet having pole pieces on opposite sides of the lower lever secured to the end of said sleeve adj acent the open end ofthe lower parti'of said casing and forming a cap for closing said open end.

2. A magneto comprising a two part casing, the lower part of said casing having top, bottom, and side walls forming a compartment for receiving an armature, the said side and bottom walls being extended beyond one end of said top wall and provided with an end wall, the other end of said lower part being open, a magnet having .pole pieces on opposite sides of the lower sures for said sleeve, an armature rotatably mounted between said pole pieces, end 010-- sures for said sleeve, an armature ratatably mounted in,said sleeve, .and having a trunnion extending from each end thereof, bearings in said end closures for said trunnions, and a timing lever secured to the end of said sleeve adjacent the open end of the lower. par-tof said casing and forming a cap, for

closing said open end.

3. A magneto of'the class described compart I prising a casing forming a compartmenofor receivlng a timing sleeve and armature, said compartment being inclosed by top, bottom, and sid walls and one end wall, and being open at one end, a magnet having pole pieces on opposite sides of the lower part of said I compartment, a timing sleeve rotatably mounted between said pole pieces, an armature rotatably mounted in said timing sleeve, and a timing lever secured to said sleeve and constituting acap for closing the open end of said compartment.

4. A magneto comprising a two part casing, the lower part of'said casing having top, bottom, and side walls forming a compartment for receiving :an armature, the said side and bottom walls being extended beyond one end of said-- top wall, a timing sleeve rotatably mounted insaid compartment, a hollow boss extending upwardly from the extended portion of the bottom wall of the lower part of said casing, and having an opening 1n each end wall thereof, the said openings being coaxial with said timing sleeve, an armature in said timing I sleeve having a trunnion extending from each end thereof, one of said trunnions e'x--.

T tending through the apertures in said hollow boss and provided between the end walls of said hollow Boss with "a worm gear, coacting thrust bearings formed on said casing and sleeve to prevent said sleeve from moving toward said hollow boss, a timing lever secured to the end of said sleeve 0 posite said hollow boss and forming a cap or the open .end of the lower part of said casing which holds said thrust bearing in co-acting relation, a plurality of terminals mounted in the upper part of said cover and insulated from each other, the lower ends ofsaid terminals lying in a plane inclined from one side of said casing toward the other side, a distributing shaft rotatably mounted in the upper end of said boss and having its inner end extending into the hollow portion of said boss and provided with a helical gear meshing with said worm, the axis of said shaft being substantially normal to the plane of the lower ends of said terminals, a distribrting armsecured to the upper end of said distributing shaft and provided with a brush positioned to successively contact with the lower ends of said terminals as said distributing shaft rotates about its axis.

5. A magneto comprising a two part casing, the lower part of sa d casing having top, bottom, and side Walls forming a compartment for receiving an armature, the said side-and bottom walls being extended beyond one end of said top wall, a timing sleeve rotatably mounted in said compartment, a hollow boss extending upwardly from the extended portion of the bottom wall of the lower part of said casing, and having an opening in each end wall thereof, the said openings being coaxial with said timing sleeve, an. armature in said timing sleeve having a trunnion extending from each end thereof, one of said trunnions extending through the apertures in said hollow boss and provided between the end walls of said hollow boss and a worm gear, coacting thrust bearings formed on said casing and sleeve to prevent said sleeve from moving toward said hollow boss, a capfor the open end of the lower part of said casing, which holds said thrust bearing in coacting relation, a plurality of terminals mounted in the upper part of said cover and insulated from each other, the lower ends of said terminals lying in a plane inclined from one side of said casing toward the other side, a distributing shaft rotatably mounted in the upper end of said boss and having itsinner end extending into the hollow portion of said boss and'provided with a helical gear meshing with said worm, the axis of said shaft being substantially normal to the plane of the lower ends of said terminals, a distributing armsecured to the upper ends of said terminals, a distributmg arm secured to the upper 'end of said distributing shaft and provided "with 9.

- brush positioned successively to contact with the lower ends of said terminals as said dis tributing shaft rotates about its axis.

6. A magneto comprising a two part casing, the lower part of said casing having top,

7 bottom, and side walls forming a compartopenings being coaxial with said timing sleeve, an armature in said timing sleeve having a trunnion extending from each end thereof, one of said trunnions extending through the apertures in said hollow boss and providedbetween the end walls of said hollow boss with a worm gear, a cap for the open end of the lower part'of said casing, a plurality of terminals mounted in the upper part of said ,cover and insulated from each other, the lower ends of said terminals lying in a plane inclined from one side of said casing toward the other side, a distributing shaft rotatably mounted in the upper end of said boss and having its inner end extending into the hollow portion of said boss and provided with a helical gear meshing with said worm, the axis of said shaft being substantially normal to the plane of the lower ends of said-terminals, a distributing arm secured to the upper end of said distributing shaft and provided with a brush positioned successively to contactwith the lower ends of said terminals as said distributing shaft rotates about its axis.

7. A magneto comprising a two part casing, the lower part of said casing having top,

low boss extending upwardly from the ex tended portion of the bottom wall of the' lower part of said casing, and having an opening in each wall thereof, the said openings being coaxial with said timing sleeve, an armature in said timing sleeve having a trunnion extending from each end thereof, one of said trunnions extending through the apertures in said hollow boss and provided between the end walls of said hollow boss with a worm gear, a cap for the open end of the lower part of said casing, a plurality of terminals mounted in the upper part of said cover and insulated from each other, a dis tributing shaft rotatably mounted in the upper end of said boss and having its inner end extending into the hollow portion of said boss and provided, with a helical gear meshing with said worm, a distributing arm 8. A magneto comprising a casing having a compartment formed therein for receivingan armature, a timing sleeve rotatably mounted in said compartment, an armature mounted to rotate within said sleeve, the said sleeve being provided with a circumferential slot, a brush extending through said slot and bearing on said armature, and means for angularly adjusting said sleeve in said compartment.

9. A magneto comprising a casing having a compartment therein for receiving an armature, a timing sleeve rotatably mounted in said compartment, an armature mounted to rotate within said sleeve, the said sleeve being provided with a slot, a brush extending through said slot and bearing on said' armature, and means for angularly adjusting said sleeve in said compartment.

10. A magneto comprising a permanent magnet, a timing sleeve rotatably mounted between poles of said magnet, an armature in said timingsleeve, means for rotatably supporting said armature, interrupter mechanism secured to said timing sleeve, means for angularly shifting said timing sleeve and means for conducting current from said mounted on said timing sleeve and contact ing with said contact member.

12. Amagneto comprising a permanent magnet, a timing sleeve rotatably mounted between poles of said magnet, an armature in said timing sleeve, means for rotatably supporting said armature, interrupter mechanism secured to said timing sleeve, means for angularly shifting said timing sleeve, andmeans for conducting current from said armature to said interrupter mechanism.

13. In a magneto comprising a field magnet structure, pole pieces and a rotor, a distributer block disposed adjacent one end of the field magnet structure and above the adjacent end of the rotor, a worm on the rotor, the under surface of the distributer block being oblique to a horizontal plane assing through the axis of said worm, a p urality of distributer contacts in said distributer block disposed around a center in the same vertical plane as the axis of said worm, a shaft disposed with its axis perpendicular to the under surface of said distributer block, a

gear on the lower end of said shaft driven from said worm, and 'a distributer arm on the upper end of said shaft arranged to cooperate with said distributer contacts when the shaft is rotated.'

14. In a magneto of the class described, a

' cated in a vertical plane passing through the axis of said worm, a distributer arm arranged to cooperate with said distributer contacts, and a shaft disposed with its axis oblique to the vertical, carrying said distributer arm on its upper end, and at its lower end provided with a pinion cooperating with said worm.

15. An armature comprising side and end pieces forming a rectangular frame, a trunnion extending outwardly from each end piece, the said side pieces being segmental in crosssection, a shuttle member provided with a winding, the edges of the heads of said shuttle being shaped so as to fit in the rectangular opening in said frame, the outer sides of said segmental side pieces and the heads of said shuttle being conformed to form a substantially continuous cylindrical surface, and means for holding said shuttle member in said rectangular frame.

'16. An armature comprising side and end pieces forming a rectangular frame, a trun nion extending outwardly from each end piece, the said side pieces being segmental in cross-section, a shuttle member provided with a Winding, the edges of the heads of said shuttle being shaped so as to fit in the rectan gular opening in said frame, and means for holding said shuttle member in said rectangular frame.

17. A magneto comprising a two part cas-.

ing, current enerating means located in the lower part 0 said casing, a pair of coils located in inductive relation'and supported in the upper part of said casing, but independently thereof, a block of insulation mounted on the upper part of said casingyterminals mounted in said insulation, a brush rotata bly mounted on the lower part of said casing so as to contact successively with said terminals, and means for conducting current from one of said coils to said brush comprising a contact member mounted 1n said insulation, and a spring member having one end in electrical contact with said brush and the other end in electrical contact with said contact member.

18. A magneto comprising a two part casing, current generating means located in the lower part of said casing, a pair of coils located in inductive relation'and supported in the upper part of said casing, a block of insulation mounted on the upper part of our names this 2nd day of anuary, A. D.

said casing, terminals mounted in said in- 1919.

sulation a brush rotatably mounted on the lower part of said casing so as to contact ARTHUR KLECKNER' successively with said terminals, and means WALTER W for conducting current from one of said Witnesses: coils to said brush. E. M. F0121),

In Witness whereof, We hereunto subscribe B. E. NELSON.

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