US1214014A - Magneto. - Google Patents

Description

R. C. DANLY.

MAGNETO.

APPLICATION FILED APR.3, 1914.

1,214,014. Patented Jan. 30, 1917.

2 SHEETS-SHEET 1.

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MAGNETO.

APPLICATION FILED APR. 3. 1914.

Patented Jan. 30, 1917.

2 SHEETS-SHEET 2- agamm alinement with the journal box ROBERT C. DANLY, OF CHICAGO, ILLINOIS.

MAGNETO.

Specification of Letters Patent. Patented J an. 30, 1917.

Application filed April 3, 1914. Serial No. 829,235.

To all whom it may concern:

Be it known that 1, ROBER C. DANLY, a citizen of the United States, residing at Chicago, in the county of'C-ook and State of Illinois, have invented certain new and use ful Improvements inMagnetos, of which the following is a specification.

My invention relates to electromagnetos for use in connection with internal combustion engines, wherein the charge of combustible fluid is ignited by means of an electric spark produced at recurring intervals by means of an electric current generated by a magneto deriving motion from a moving part of the engine mechanism and suitably connected with theignition mechanism.

' The object of my, invention is to providef a magneto simple in its construction,

generating an electromotive force to produce 1 a strong current, and substantially proof against displacement of parts, and when once adjusted will continue to operate efficiently and positively for the purpose required. These objects are attained by means of the mechanism illustrated in the accompanying drawings, in which Figure 1 is an end elevation of a magneto having my invention embodied in its constr'uction; Fig. 2 is a partial bottom view of Fig.1; Fig. 3 is a vertical, longitudinal cross section of Fig. 1; Fig. his a plan view of the armature; Fig. 5 is an end ele vation of Fig. 4; andFig. 6 is a viewin perspective of one of the poles of the magneto.

Referring to the drawings, wherein the same reference numerals designate like parts throughout the several views, 1 represents a substantially rectangular case adapted to carry the operative parts of the mechanism, and including top and bottom walls and 3, respectively, an end wall 4, havmg integral therewith a centrally disposed journal box 5, and 6 represents oppositely disposed arms integral with the case and provided with laterally disposed studs 7. arranged in the same horizontal plane as the axis of the journal box 5.

8 represents a removable end wall for the opposite .end of the case, andintegraltherewith is a journal box 9 disposed in axlal 5, at the opposite end of the case.

10 represents the poles of the magnets, and they form the side walls of the case 1 K and are made integral therewith by being placed within the mold in the casting of the case and having the molten metal, preferably brass, poured around them in a manner to rigldly' connect them with the body of the case, the pole members being provided with longitudinally disposed grooves 11 upon their opposite edges that receive a part of the metal of the body of the case in a manner to securely connect the poles therewith in an interlocking manner.

12 represents a permanent built up field magnet, preferably of the horse shoe form, having its poles securely connected with the poles 10 and side walls of the case-.1 by being received between laterally extending rib members 13 at opposite ends of the case that terminate at their upper ends in lip members 14 that are swaged closely against the edges of the bars of the magnets in the assemblage of the parts of the mechanism, and 15 represents a band of flexible material that is bent around the upper end of the magnet and secured to opposite sides of the base of the case 1 by means of screws 16.

The pole members 10 of the field magnet 12 are accurately finished upon their semicircular, faces, and 17 represents a rotatable armature including a core 18, comprising'a series of separate plates of H-form of magnetic material, having axial openings therein that receive the armature shaft 19, the plates being keyed to the shaft and 20 represents spacing blocks at opposite ends of the armature of non-mag11etic material arranged at right angles with the body of the core, and longitudinally disposed spacing bars 21 of similar material connected with opposite ends of the blocks 20 and secured thereto by means of rivets 22. The H-shaped plates are clamped together at their opposite ends by means of sector heads 23 of non-magnetic material at opposite ends of thearmature and through rivets 24. The cross heads 20 and bars 21 divide the space between the heads of the H-shaped core into two oppositelyvdisposed longitudinal channels that cured to the free end of a clip member 26;

Y means of a clamping screw 32. The binding the lower set of rivets 24 extending beyond the disk for a purpose to be described here after.

28 represents a plate upon the opposite side of the insulator disk 27 parallel with the clip 26, and the two members are secured to the disk by means of rivets 29.

30 represents a coil of resilient conductor wire surrounding the shaft 19 at a distance therefrom, having one end connected with one of the rivets 29 and its opposite end to the inner slotted end of a binding post 31 by post 31 includes a body portion 33 that is received by an opening in a boss 34i upon the upper wall of the case 1 and insulated from the boss by means of a sleeve 35, a collar 36 near its upper end, a threaded lower end that receives a nut 37 and 38 and 39 represent insulating washers upon the outside and inside of the boss on the case, re" spectively, the washer 38 having one side fiattenedand engaging with the boss in a manner to secure it against rotation, as shown in Fig. 3. The upper end of the post is cylindrical above the collar 36 and rec'eives a coiledeompression spring 40 and a pair of wire'clamping disks A1 that are se cured upon tire post by means of a split ring 42 that is partially received by an annular groove upon the upper end of the post, and 43 re resents a-conductor received between the, dlsks and that may lead to the ignition mechanism of an engine; the spring &0 operating to automatically hold the disks in engagement with the conductor. Secured to one 'end of the armature shaft 19, adjacent the bearing box 5, by means of a nut 44: and key 45, is a rocking arm 46, having a slotted opening 4:? that may receive a reciprocating rod whereby the magneto may be operatively connected with the ignition mechanism of an engine. .The opposite end of thearmature shaft 19 is journaled in the bearing box 9 in the'end wall 8, that is secured in position by screw studs 48, and when the parts are finally adjusted a seal 49 is placed upon one of the screws to insure that the inclosed parts of thernechanism will not be secretly or privately tampered with. v

Lubricant is supplied to the bearing 9 through the conduit 50, and a drip opening 51 is provided in the wall 8, below the jour nal, to carry away any surplus that might otherwise be carried into the interior of the case and destroy a proper insulation-of the Integral with the arm 46 are oppoparts. sitely disposed arms 52, at right angles wlth the axis of theshaft 19, and provided with i open ended slots 53 that receive sleeve members 54;, that are jonrnaled upon pins are secured to the arms by means of washers 56, and split rings 57 received by annular grooves in the extended ends of the pins. The sleeves are provided with annular grooves that receive the inner ends coiled tension. springs 58, the opposite end of the springs being connected in the same manner with like sleeve members 59 carried by the studs 7 at the ends oi the arms The magneto is one of the oscillating type and is designed to secured to an engine by means of screws received by threaded openings 60 in the base of the case 1, rnotion being imparted in one direction to the armature against'the force of thesprings 58 by means of a reciprocating rod 61 that engages with the free end of the arm 46, the

rod being actuated by a moving part of the engine properly timed with the movement preferred manner, and the springs 53 oscillate the armature rapidly in an opposite direction. inducing an electroinctive force therein. The coil 30 takes the place of a brush and winds andunwinds asthe armature oscillates, and is subject to no disarrangement that would break or impair the current, and an accidental turning of the armature beyond the limits of its actuating movement in either direction is prevented by the binding post 31 contacting with the extended ends of the rivets 24.

What I claim-as being my invention, and desire to secure by Letters Patent, is:

1..A magneto including, in combination, a casing having top and bottom and one end wall comprising a one-piece structure, a second separable end wall, an armature journaled in said end wall, laterally extending the top and bottom walls of said case ina manner to rigidly secure said pole pieces in operative relation without other securing means, a field magnet having its pole re ceived between said ribs and engaging with the outside faces of said pole pieces and having said swaging elements closed against the sides of said magnet in a manner to secure it in close contact with said pole pieces 2. A magneto including, in combination, a case, an oscillatory armature journaled in said case, an insulated binding post carried by said caseja coiled resilient current conductor having its opposite ends rigidly connected with said post and armature, respectively, and stop members cartied' by said 1353 tending beyand Saki core, a binding post carried by saifi case, said rivets contacting 10 with said post in a manner to limit a retative movement of said armature.

ROBERT C, DANLY. Witnesses 1mm; FRIES, A. H. Dxmssnn.

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