US1840674A - Electric generator construction - Google Patents

Description

Jan. 12, 1932. J. K.-LENCKE ET AL 4 ELECTRI C GENERATOR CONSTRUCTION Filed Oct. 24, 1929 4 Sheets-Sheet l INVENTORS, J'omv K. Lave/ 5. HERMAN Sum 10.

A TTORNEY.

4 Sheets-Sheet 2 Jan. 12, 1932. .1. K. LENCKE ET AL ELECTRIC GENERATOR CONSTRUCTION Filed Oct. 24, 1929 I NVE NTO PS. Jon/v K. Lave/ 5. HEfiMflN Sal/MID.

BY ATTORNEY.

Jan. 12, 1932. J. K. LENCKE ET AL ELECTRIC GENERATOR CONSTRUCTION Filed 0ct.'24-, 1929 4 sheets-sheet a INVEHTORS- Jbf/N K. Lave/ 5. BY //ERMflN Scum/a.

H TTORN EY.

Jan. .12 1932. J. K. LENCKE ET AL 1,840,674

ELECTRIC GENERATOR CONSTRUCTION Filed Oct. 24, 1929 4 Sheets-Sheet 4 INVENTORS. Jo/m/ K. L ENG/(E,

BY HERM/IN SCI/MID. Wm,

A TTORNEY,

25 hereafter.

Patented Jan. 12, 1932 UNITED J'OHNK. LENGKE AND HERMAN SCHMID, OF KINlSTQNpNEW'YORK, IASSIGNORS APOLLO MAGNETO CORPORATION, A'CORPORLA-EION OF-DELAWAHE ;,j-

' ELEGTBIG-GEfiERATOB. consrnucrrron Application filed bacte ia i'aaaf, serial'no'. 462,162.

This invention relates to casings and parts for electric generators and particularly magneto generators commonly used for ignition systems for internal combustion engines An object of the invention is'topro'vide simple, cheap and 'efiicient casings' for the working parts of the generator easily'p'roduced and easily replaced in case of damage,

Another object is to provide that theisev- 1 eral main casings and certain associated parts are produced by die casting or mould; ing so as to require a minimum of hand worl'r for their production. y

A further object is to provide a generator wherein the insulating casings such as the collector, distributor and other parts subjected to high voltage are of simple and rigid construction. j

A further object of the invention isjto provide generator parts of simple construction that will not give trouble in service and which may be easily replaced; f a E I Further objects will be apparent to those skilled in the art and are briefly referred fto In the accompanying drawings: v Figure 1 is a side View, partly in perspective, of a magneto generator employing casings embodying this invention;

Figure 2, a view partly in section of the base member of the magneto;

Figure 3 is a front view of the base member;

Figure 4 is a view partly in section of the frame member of the magneto which forms a unit;

Figure 5 is an end view of the frame member looking into the armature bores;

Figure 6 is a front external view of the collector cover; V

Figure 7 is a sectional view on the line 6, 7, Figure 6; 4

Figure 8 is a rear internal view 0 cover, Figure 6;

Figure 9 is an external view of the end plate or plates for the open end of the main frame, Figure 4;

Figure 10 is a view of the inside of the end plate, Figure 9;

the

Figure 11 is a sectional view of the end a plate, Figure 9; i I

Byway of'i'llustration, the magneto Figure l isshown-as designed for use'with a six cylinder engine for supplying ignition current thereto, but can be designed forany other number of cylinders: 'The present applic'ation willtherefore be'largely limited to 'describihg claiming specific details of construction of the *casi'n'gs" and parts made integraltlierewith or imbedded therein'gp'arhearsay-seas manufacture aiidsal'e of these parts or-casin s for-replacements constitutes a busines'gyiv is desired to protect by patent as distinguishedfrom the business protected bypatents-on-the'rna'gneto as a whole? Ap- 'plicant's' t herefore" he'rein claim the specific construction of the specific partsfdescribed herein and usually sold as repairer replaceent parts, the sale of {which often constitutes-a separate business iroim'tha-t of the a em? Complete magn etos.-" I

1 1 "nume'r 1 "1 denotes theb'asemen bei as a whole, forming part of the casing-of the :I'nagnetd'up'on 'which all other parts are supported. This has a" bottom'portion-2 "whichisjcomnionly tapped forbolts, whereby the base may-be secured to the engine. Thes'e tappe'd holes are shownin dotted lines and it islsometimes desirable to secure the magneto tothe"e1igine by a clamp passing over the ma eto using the tapped holes for loeating owel pins. As such clamps are well known the are not described in detail. The base memer has a portion 3 preferably formed integral therewith and at right angle s-to the base 1-. This is'formed with an outwardly extending boss 4' provided with the internal shoulders 5, 6, 7, whereby a shaft 8 and its front bearing may be supported within the'boss' Two or more holes 9, 10

"may be providedin the'face of 3, to engage pins or" bolts in the main frame, one of which bolts is'shown at 11.

i The upper rear surface 12 of boss 4 on the flange 3 is made to fit against and below the shoulder 13 of the main frame shown in Figure 4c. 'The lower portion 1i of the base is made to'fit theinner flange 15 of the main frame, and dowel pin 16 in the frame may The foregoing design of base plate en ables it to be easily constructed by die casting and permits the bearing portion to be cast inte raltherewith andthe complete base mem er to be easily assembled to the main frame, Figure 4', the parts being; aocurately lined up by the engaging pins and surfaces, and firmly secured in operating position by the bolts as described. v

Oil cups 20,,20a may be provided having ducts communicating withthe iinterior :of

that portion ofthe,b ss :4; supporting the shaft bearingwhereby the samemay be lubricated; And a flange 21 is provided on each side of the base, set back from the extreme outer edge thereof to which the magnet strap 22 extending over the magnets 23,

, 23a, may be secured bymeansof screws on each side, the screwson one side bein shown at 24, 24a and the arrangement on t e other side not shown being the same. A'recessed portion 21a is formed between the flanges 21 for containing a magnet clamping means,

Z-f which isgsecured by a screw through the threaded hole 216. 1 4 A; I Y

The main o-frameFigure forms withits associated parts, mounted upon or cast therein, a unit. It may be a-die casting having the bolts previously referred to cast therein or attachedthereto in any suitable manner. This frame also carries four pole pieces of the usual type, two of whichare shown at 25, 26 These pole piecesv extend through to the outer surface of the frame and contact with the magnets 23, 23a, and form the inner faces of the circular bores 27, 28 for the armatures of the magneto generator. Concentric with these boresare the slightly larger bores 29, 30 to give the ends of the armature additional clearance, and concentric with 29, 30 are the slightly larger bores 31, 32 for gears attached to the armatures for driving the same. v

The bore 33 is provided in which to mount a bearing for the shaft 8 and the bore 34 to provide a space for a gear on said shaft which engages the gear in 32. i

The front end of the frame is provided with apertures 35, 36 and bores 37, 38 In the latter are mounted the outer ball races 39, 40 of the bearings for the armatures.

An oil cup 41 is provided having a duct 42 connecting with the race 39 and a similar cup 41a and duct (not shown) is provided for oiling the race 40. An oil cup 43 and ducts 44, My are provided to admit oil to the ducts 4:46, 44k in the end plate, Figure 20, and from these ducts the oil flows to the bearing therein. Similar ducts 440, Md ar provided c01nmuniating- Ewit h bearg a. V v v a The finished flanges l5, 46 are placed in the ends of-theopenings,35i-and 36, Figured, and maybe insertsin the anain frame when it is made, or may be put in afterward.

The shoulders 47*, 48 are provided to form seats for the collector covers shown in Figures 16, 17, '18and hereinafter described.

, , Suitable webs 49, 50,51 are provided to t fie'n mai frame an. th ji as e fl 'n 53 are provided-to prevent sidewis'e' movetj of. .t h i s s ;12 f i d 1 re cated'betweeri them?! he opening fiaisprovid d Iliold ew .9 "spac fb ee ii h b er gsfl i a't i ijae'd 3;ene? 1'btt s ev 'art a liii hgee hs am es dengaging. hel eel ri f er 56" beipl'ac'df between the This main frame, Figure also forms part of the external casing o'f 'the' magneto and itwill be observed can made a'ndsold as a unit complete with the 1 parts heretofore'fl de scribed as attached to or iinbedded therein, such asthe pole pieces 25,26, andth'atit can be easilydisassembled from the base member, Figure '2," the other ni te descrihe p The interrupter'fend' plate, Figures" 9,10, 11, sconsists prefei'fably,of:ia die casting, or t s ngs steam, adePfed"' -b' f a ed we o t a n a,

. .i K m to the maia-fraifity screws, him of. which is shown. F ur and as, which clearance hua sbr e iof "are "shown at 59, are provided, Tappedfholes," some of which are's'hown'atf60, Figure'i5, arep'rovided for these, screws the main frame.

outwardly extending bosses 61, 61d are 'provided upon which'ihay be mountedthe usual interrupter casings, one for each armature, theupper one being shown at 62 in Figurel. This'plate has the annular'depressions 63,

'64 concentricwith the"armature-bores 27, 28

in which are placed the outer ball races'65, 66 and'th'e insulation 65ay66a for the-armature bearing. Openings 67, 68 permit the armature shafts'to extend out into the: in-

terrupter casings 67a, 63a which contain the -usual.--1nterrupter mechanisms. These end plates, or a single plate if 57, 517a. and-57b are,madei integral, forms a cover for the gears in the unit frame.

The'0pening'69 is P vided so that sha ft .8 may extend therethrough and into ahou ing 70 for a gear carried 0118 to drive a gear on a shaft. leading to -the distributor mechanism in casing 71.

The housing 70 is clamped distributor head.

1 ondary or high tension contact with 104.

screws to the end plate 57 (when the end plate is made in one piece) or to the bottom portion thereof designated by the numeral 57?) when the end plate is in three pieces. This housing carries a grease cup 7 a for supplying grease to the gears therein and has a clamp portion 7 3 in which may be clamped, by means of screws pressing the portion 73, the neck or shank of a distributor head and mechanism which is supported thereby.

The collector casings are shown in Figures 6, 7 and 8. As both are alike, only one will be described in detail. These consist of the bakelite or other mouldings of sulating material and are shown in position at 103 and 104 in Figure 1. .These are provided with terminals 99, 99a which connect via cables with terminals 76 and 77 in the These terminals 99, 99a connect with springs, one of which is shown at 104, Figure 7, which springs connect to rotating contacts on the armatures which contacts are, in turn, connected tothe secwindings. These casings are provided with the recess 105 for the spring 104 and a recess 106 to ermit the end of the armature carrying the high tension contact to project therein to tion 107 is provided to contact with the 108 in the edge of the casingl shoulders 47, 48 on the main frame. The casings are secured to the main frame by screws into the frame passing through holes For the'sake of brevity t e drawings and description in this application have been confined to the features herein claimed.

We claim:

1. In an electric generator, a base having a projecting portion forming a bearing support, a frame having two armature bores therein, and means on said bearing support and frame for securing said members together. V

2. In an electric generator, acast frame, a plurality of pole pieces therein, bearing members in one end of said frame, and downwardly projecting portions on said frame having means for securing said frame to a base.

3. In an electric generator, a unit frame having a portion forming a housing for a driving shaft and gear and forming a su port for one of the bearings'for said sha two armature bores in said frame and an extended portion on the for the armature gears. I

4. In an electric generator, the combination of, a supporting frame, two sets of pole ieces therein, bearing members, oil cups, and bolts whereby the frame may be attached to a base, all of the foregoing being assembled and constructed to form a unit part. 5. In a frame for an electric generator, as

The tapered flanged por-' frame forming a casing es on the down the claimed in. clai1n4, magnet flan frame extending over the top an sides thereof.

6. A frame for magneto generators having a main body portion constituting a housing for two armatures and a portion forming an end for said housing portion and bearing supports, said frame having a laterally extended portion forming a gear casing, and a cover for the gear casing end of the frame, said cover forming a bearing support.

7. In a magneto generator, in combination with a unit frame having two armature bores therein, end plates adapted to be secured to the end of said frame said plates enclosing said armature bores and forming bearing supports, and laterally projecting bosses on the outer surface of said plates forming interrupter supports.

8. In combination with a main frame having two parallel armature bores therein and an end portion forming bearing supports, collector casings of insulating material adapted to be mounted on said end portion and to close the open ends of said frame.

In testimony whereof we afiix our signatures.

JOHN K. LENCKE. HERMAN SCHMID.

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