US1395429A - Ignition apparatus - Google Patents

Description

A. C. KLECKNER.

IGNITION APPARATUS.

APPLICAIION FILED SEPT. 18. 1920.

1,395,429. Patented Nov. 1, 1921.

3 SHEETS-SHEET 1.

lA. C. KLEGKNER.

IGNITION APPARATUS.

APPLICATION FILED SEPT. I8' 1920.

Patented Nov. 1, 1921.

3 SHEETS-SHEET 2.

n I IIN; A \\NI NINQ @MALAWI A. C. KLECKNER.

IGNITION APPARATUS. APPLlCATloN FILED SEPT. I8. 1920.

1,395,429. 4 Patented Nov. 1, 1921.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

ARTHUR C. KLECKNER, 0F RACINE, WISCONSIN, ASSIGNOR TO WEBSTER ELECTRIC COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

IGNITION APPARATUS.

Specification of Letters intent.V

y' l Patented Nov. 1, 1921.

'had to the accompanying drawings, forming a part of this specification.

Iy invention relates to certain improvements applicable to those several types and styles of internal combustion engine ignition apparatus that may be comprehensively classified as unitary oscillating magneto ignition equipments. While ignition equip- 'ments of the general class mentioned differ somewhat, inso far as details of construction are concerned, they all comprise a plug carrying make and break electrodes, and an oscillating magneto together with its appurtenant operating spring, or springs, push finger, or equivalent part that is engaged by an engine driven actuator, and a .trip finger that serves to actuate the electrodes in timed relation to the magneto; the magneto and its aforesaid appurtenant parts being mounted upon a supporting shelf or bracket that is carried by the plug; the plug, the magneto and its aforesaid appurtenant parts, and the shelf or bracket being applicable to and removable from an engine as a unit.

More specifically my present invention contemplates: Y

1st. The provision of an ignition equipment of the class mentioned which comprises improved and extremely satisfactory means for cocking the magneto.

2nd. The provision of an ignition equipment of the class mentioned ywherein the magneto, bracket, the push finger and the trip finger are so constructed and arranged that they may be applied to various styles of plugs, thereby enabling me to eliminate the necessity for carrying in stock a multiplicity of different brackets or a multiplicity of push and trip finger combinations. In other words, I provide an arrangement of magneto, bracket, push and trip lingers that is' standard for all installations and which may be applied to plugs of various styles and sizes. f

3rd. The provision in a magneto ignition equipment of the class mentioned of a composite structure which is operatively connected with the magneto rotor and which provides the push finger, the trip finger, the means for disengaging the push finger from the engine driven actuator, and preferably the means for attaching the operating springs to the magneto rotor, the several parts of this composite structure being so constructed and arranged that they may be assembled and secured together in a great variety of ways'in order to meet the requirements of different installations.

These and other objects of the present invention will appear as the following detailed description progresses. v

In the accompanying drawings illustrating one embodiment of my invention,

Figure l is a top plan view of a unitary oscillating magneto ignition equipment constructed in accordance with my present invention.

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig.' l and looking in the direction indicated by the arrows.

Fig. 3 -is a disassembled view in perspective of the several parts of the composite structure which provides the push finger, tripfinger, the .means for disengaging the push finger from the engine driven actuator and the means for attaching the operating springs to the magneto rotor.

Fig. 4 is a view illustrating how the said composite structure functions to effect the disengagement of the push finger and engine driven actuator and Fig. 5 is a fragmentary Vertical sectional view taken on the line 5 5 of Fig. 2.

Similar characters of reference refer to similar parts througho t the several views.

For the purpose of c nvenience in description, I have used numerals to designate the various parts of the unitary magneto ignition equipment and letters to indicate the actuator and its appurtenant parts which may properly be considered part of the en- In the drawings, at 10, I have illustrated the usual plug which is provided with the iange l1l and with a ledge 12. The plug, ange and ledge are cast as a single integral part, the plug being adapted to project into an opening in an engine cylinder andarranged to be held in' position by suitable bolts which pro'ect through. the bolt holes 13 13 in the fiange 11. Carried by the plug casting, are the usual stationaryand movable electrodes indicated respectivelyat 14 and 15. The stationary electrode 1s 1nsulated from the plug casting and is provided with a cli-p 16 which is arranged to coperate with a conductor leading fromY the insulated terminal of the magneto. The movable or rocking electrode is provided with the arm 18 which, at the proper instantK in the operation of the magneto, 1s engaged by the magneto trip linger to effeet the separation of the electrodes. Projecting laterally from the arm 18 is a pin 19 and interposed between the pin 19 and a cotter pin-engaging in an aperture in the plug ledge 12, is a tension spring 20, 1t being thel function of this spring normally to hold the movable or rocking electrode in engagement with the stationary electrode and to oppose separation of the electrodes. Interposed between the arm 18 and the plug casting is a compression spring 21, the purpose of which is to prevent the escape of pressure around the movable electrode by holding the beveled shoulder at the inner end of the electrode tightly in engagement with a correspondingly shaped seat in the plug casting. This last mentioned expedient is well known in the art to which my invention relates and need not be illustrated in detail.

I contemplate that the size and conformation of the plug casting ,and the disposition 'of its several parts, hereinbefore specilically mentioned, will vary considerably in di'erentinstallations. For instance, different engines re uire that the plug 10 have a variety of di erent sizes and shapes. In some lnstallations, it is necessary that the ledge 12 be disposed vertically instead of horizontally in'order thatthe magneto may be carried in the position most suitable to the particular requirements 'of the engine with 4which it is used. A great number of variations in the plug casting and in the construction and relative arrangements of its several parts which may be required 'in different installations, will at once suggest themselves .to persons skilled in the art to which my mvention relates. However, despite the respects in which the plug castings for use with various engines may differ, I find it desirable to provide each plug casting with va horizontally, or otherwise suitab y disposed ledge 12.

'I shall now describe a magneto and appurtenant devices which may be more 'orless standard and which may be readily applied to for use in connection with any plug provided with a ledge of the kind herein-v before mentioned.

The magneto generator is illustrated at 22v and while the particular type and construction of the magneto generator per se, is not important 'in so far as my present invention is concerned, I prefer that the magnete shall be of the well known Webster tripolar type. A magneto of this ty e is shown inllgatent No. 1,180,489, dated pril 25th, 19

The magneto shown in the accompanying drawings comprises side plates 23-23 which provide bearings for the magneto rotor or inductorghaft 24. It will be noted that one of the side plates provides an exceptionally long bearing for the rotor shaft, this long bearing being afforded by a hollow boss25 which projects outwardly away from the side plate. The boss 25 projects freely through an aperture in a plate 26 which is rigidly secured to the adjacent side plate 23 by a plurality of screws 27-27.

While I have Shown the plate 26 as being formed separate from the magneto side plate and r1gidly attached thereto byscrews 27-27, it will be understood that the plate 26 might, if desired, be made to constitute o ne of the magneto side plates. This variation in the arrangement is so obvious that it Aneed not be illustrated.

that the le ge 12 ofevery plug structure, de-

signed to be used as a part of an equipment of my lnvention, will be provided with suitable bolt holes Ispaced to correspond to the bolt holes in the flange 26", to the end that any plate 26 and parts carriedthereby may be applied to the ledge 12 ofany one of the plug structures. r

l shall now describe the composite oscillatmg structure which is secured upon the magneto rotor shaft and `which provides:

1st. The push finger.

2nd. The trip finger.

3rd. The means for disengaging the push finger from the engine driven actuator at the properinstant in the cycle of engine operation, and p 4th. The means through which the operating springs are connected with the rotor shaft.

lThe ,several principal parts of this composite structure consist of sheet metal punchings which are perhaps most clearly illustrated at 30, 31, 32 and 33 in Fig. 3. Each of these punchings is' provided with a central aperture 34.

Referring now, specifically, to the punching 30, it willbe noted that it is somewhat elongated and is provided at its ends with `two openings 35-35, these openin s being 36-36 as shown in Fig. l. Also formed in the punching 30 are nine apertures 37-37 which are equally apart and which are disposed in the circumference of a circle concentric with the opening 34.

The pu'nch1ng31 is provided with a truly circular peripheral surface and is providedv the opening 34 of punching 32.

Punching 33 is provided with the arcuate surface 41 which is struck upon the same radius as the periphery of the punching 31. Furthermore punching 33 is provided with a tooth or finger 42 which, as will presently appear, constitutes the trip finger which Y effects the separation of the makeand break electrodes at the proper instant -in the cycle of operation. Moreover punching 33 is provided with nine apertures 43-43 spaced 40 apart and located inthe circumference of a circle concentric with the opening 34 in the said punching 33.

Attention is directed to the fact that all of the openings 37, 38, 40 and 43o-f the several punchings are disposed equal distances from the centers of the circles in which they are arranged so that a'plurality of apertures in contiguous punchings may be brought into register when the punchings are concentrically arranged as shown in Fig. 5. The comv-n posite structure comprising the punchings 30 to 33 both inclusive is secured together by three rivets 45 which extend through registerin apertures in the several punchings.

Di erent installations require different relationships and different angular adjustments between the push finger 39 and the trip linger 42. Y

It'will be seen that with the punchings 32 and 33 in the relationship shown in Fig. 3 whenever an' aperture inthe punching 33 is brought into registry with an aperture in the punching 32, two other apertures in the punching 33 will also register with apertures in punching 32. Thus with the punchings 32 and 33 in the relationship shown in' Fig. 3, they are capable vof being given nine differ-l ent angular adjustments. However, the

punchings may be placed in three Vrelation-- ships dierent from the one shown in Fig. 3. For instancewith the 1punching 32 in the position shown in Fig. 3 the punching '33 might be changed side for side. Again with the punching 33 in the position shown in Fig. 3, the punching 32 might be changed side for side. Again both of the punchings might be changed side for side from the position shown in Fig. 3.

Since the apertures in the punchings 32 and 33 permit nine angular adjustments for each of these relationships, itwill be seen that I am enabled to get thirty-six different adjustments between the push finger 39 and the trip finger 42.

Since there are nine apertures in the punching 30 it will be understood that any one of the thirty-six different combinations of unchings 32 and 33 may be given nine diffrent angular adjustments with respect to the punching 30.

Since punching 31 is truly circular and is provided with three apertures disposed 120 apart, it will be seen that the apertures in this punching will always cooperate with the rivets regardless of the relative adjustments between the punchings 32 and 33 or between these last mentioned punchings and the punching 30.

After the several punchings 30 to 33 have been properly assembled and have been secured together to form a composite structure of the kind shown in Fig. 5, the opening afforded by the several central apertures 34 is converted by means of a suitable tool into a conical bore so that the composite structure may be slipped over the tapered end of the rotor shaft as shown in Fig. 5. The composite structure is, furthermore, preferably provided with a suitable keyway adapted to cooperate with a Woodruff or other key carried. by the rotorshaft. The structure is conveniently held upon the shaft by a suitable nut as shown.

It will be noted ythat the arms 26.2l of the stamping 26 are provided with roller posts 50 which are fitted into suitable openings in the said arms. Interposed between the rollers carried by the roller posts 50 and the rollers carried'by the rollerpost 36 of the punching 30, are the comparatively heavy springs 51-51 which normally hold the composite structure and the magneto rotor in a definite angular position` with respect to the field structure of the magneto.

t I may suggest that when it is found desirable to p ace the punching 30 as close to the vstampmg' 26 as has lbeen illustrated in F 1g. l, a portion of the metal of the un'ch#v ing 30`A at the edges of its ends next a 'acent the-springs is cut away (as shown in ig. l) in order that the endsof the punching may not interfere with the free operation of the springs. vThis is, of course, an expedient which may or may not be employed as conditions require.

The engine driven actuator comprises a push 'rod A having one end thereof ad'ustably threaded into a casting B, a nut being provided to maintain the desired adjustment between the push rod A andca'stiis ing B. The casting B is provided with a circular bore `in which is fitted an eccentric D which is, in turn, rigidly mounted upon i the shaft E. The shaft E is journaled in a bracket F and is provided with a hand piece G Wherewith to. turn the eccentric D with respect to the casting B. It is the purpose of the eccentric to permit the operator to advance and retard the occurrence of the spark. If desired,'the casting B may be rovided with a suitable spring pressed ball adapted to engage in either one of two recesses in the eccentric D so that the operator, without difficulty, may quickly adjust the eccentric running The bracket F is mounted upon any suitable movingpart of the engine as, for instance, upon the exhaust valve operating rod indicated at I. The particular bracket shown may be secured at any desired position upon the rod I by set screws J-J. The tension spring K is desirably interposed between the casting B and the bracket F, it being understood that this spring normally tends to move the casting `B and push rod A in a clockwise direction as theparts are viewed in Fig, 2.

Secured upon that end of thewpush rod A opposite the casting B is a wedge or cam member indicated at L. This wedge or cam is secured tothe h rod A1 by suitable rivets indicatedat It. will be noted that the wedgeor cam member embraces the end of the push rod and that the side portions of the wedgel are inclined asfindicated at 1-1.

Normally, the sides-ofthe cam or wedge member L rest upon the arcuate surfaces of the punchings 3,1 and 41 as is clearly illustrated in Fig. 2. In this event, the end of 40 the push rod lies adjacent the push finger 39 as is also clearly illustrated in Fig. 2. In the operation of the engine, when the exhaust valve I is moved to .the right, .(Fig. 2), the push rod is also moved to the right. The end of the push rod engages the push finger 39 and moves the latter and parts connected therewith in a clockwise direction' (Fig. 2) thus cooking' the magneto rotor agamst the tension of the operatin springs 51-51. Shortly after the push rod engages the push finger 39, the inclined surfaces 1-1 of the cam or Wedge member L, engage and ride upon the arcuate peripheral surfaces of the. punchings 31 and 41. As a resultv of the coperation of the inclined surfaces of the wedge member with -the arcuate surfaces of the said punchings, that end of the push rod lwhich is in engagement with the push finger is raised as it moves to the right (Fig. 2) At eration, the wedging action between the surfaces 1-1 and the arcuate surfaces of the punchings 31 and 33 causes the push rod to be lifted out of engagement with the push fingerl and when this occurs, the operating to its proper positions for starting andV the proper instant in the cycle of engine op-4 such that the trip finger 42 will effect the separation of the electrodes at the instant when the peak of the current wave generated in the magneto windings is attained.

It will be understood, of course, that the angle through which the magneto rotor is moved on its cooking movement may be regulated to a nicety by the inclination of the surfaces 1--1 of the member L.

Having thus described my invention, what I claim as new and desire to secure-by Letters Patent of the United States, is

1. An ignition apparatus comprising an oscillatory push finger, an arcuate surface adjacent said push finger, said arcuate surface constituting part of the circumference of a circle having the push finger axis as its center, and an engine-driven actuator arranged to engage and move the push finger, the actuator being provided with means arranged to cooperate with said arcuate surface to disengage the actuator from the push finger when the latter has been moved through a predetermined-angle.

2. An ignition apparatus comprising an operating mechanism consisting of an oscillatory push finger, means'fixed with respectv to the push finger providing an arcuate surface adjacent said push finger, and a push rod for engaging said push finger, said arcuate surface being struck from a center co- 4 incident with the push finger axis, said push rod provided with a cam portion adapted to bear against said arcuate surface when the pushfinger is moved by the push rod', 110 the co-action of said cam portion and arcuate surface serving to dsengage the push rod and push finger when the push nger has been moved through a predetermined angle; f

3. An ignition apparatus comprising an oscillatory push finger, `means fixed with respect to said push finger providing an arcuate surface concentric .with the axis around which the push finger moves, and an 120 engine-driven actuator arranged to engage and move said push finger, the actuator being provided with a cam portionwhich coacts with said arcuate surface to disengage the actuator from the push finger when the 125 latter has been moved through a predetermined angle.

4. An ignltion apparatus comprising' an oscillatory push finger, means fixed with reuate surfaces, one on each side of the push finger, an engine-driven actuator arranged to engage and move the'push finger, and means on said actuator arranged to co-act With said arcuate surfaces to disengage the said actuator from the push finger When the latter has been moved through a predetermined angle.

5. An ignition apparatus comprising an oscillatory push finger, means fixed with respect-to said push finger providing two arcuate surfaces, one on each side of the push finger, said arcuate surfaces being concentric With the axis of push finger movement,

an engine-driven actuator adapted to engage and move the push finger, and means carried by the actuator arranged to coperate with said. arcuate surfaces to disengage the actuator from the push finger when the latter hasbeen moved through a predetermined angle.

6. An ignition apparatus comprising an oscillatory push finger, means at the side of said push finger roviding an arcuate surface concentric with the axis of push finger movement, an engine-driven actuator arranged to engage and move the push finger, and means carried by the actuator arranged to cooperate with said arcuate surface to disengage the actuator from the push finger When the latter has been moved through a predetermined angle.

7. An ignition apparatus comprising an oscillatory push finger, an arcuate surface immediately adjacent said push finger, said arcuate surface being struck from a center coincident with the push finger axis, an engine-driven actuator arranged to engage and move said push finger, and means carried by the actuator arranged to coperate with the arcuate surface to disengage the actuator from the push finger when the latter has been moved through a predetermined angle.

8. An ignition apparatus comprising an oscillatory push finger, means providingarcuate surfaces on opposite sides of the push finger, an engine-driven actuator arranged to engage and move the push finger, and a pair of cam portions depending from the actuator, each of said cam portions adapted to cooperate with one of said arcuate surfaces to disengage the actuator from the push finger when the latter has been moved throulgh a predetermined angle.

9. n ignition apparatus comprising an oscillatory member provided with a push finger, a second member fixed with respect to the rst, said second member being provided With a trip finger, and having an arcuate surface concentric with the axis around which said members oscillate, an engine-driven actuator arranged to engage and move the push finger, and means carried by the actuator arranged to coperate with said arcuate surface to disengage the actuator from the push finger when the latter has been moved through a predetermined angle. y

l0. An ignition apparatus comprising an oscillatory member provided with a push finger, a second member disposed immediately adjacent the first and provided with a trip finger, said means being provided With a plurality of equally spaced apertures arranged in concentric circles of the same diameter, one of said members being provided With less apertures than the other, and rivets extendingv through registering apertures to secure said members together.

11. An ignition apparatus comprising an oscillatory and substantially disk-shaped member, provided With a push finger, a second substantially disk-shaped member disposed immediately adjacent the first and provided with a trip finger, a plurality of equally spaced apertures in said members, said apertures being arranged in concentric circles of the same diameter, there being less apertures in one of said members than in the other, and rivets extending through registering apertures serving to Secure said members together. Y

l2. In an apparatus of the class described, a composite oscillatory structure comprising a member provided with a push finger, a member provided with a trip finger, and a member constituting a spring yoke, equally spaced apertures in eachA of said members., said apertures being arranged in concentric circles of the same diameter, there being less apertures in one of said members than in the other, and rivets extending through registering apertures in said members to fasten the same together.

13. In an ignition apparatus, an oscillatory composite structure, spring means normally retaining said composite structure in a definite angular position, said composite structure comprising: a member provided with a push finger, a member provided with a trip finger and means for rigidly securing said members together in a plurality of relationships and relative angular adjustments.

14:. In an ignition apparatus, an oscillator composite structure, spring means normally retaining said composite structure in a definite angular position, said composite structure comprising: a member provided with a push finger, a member provided with a trip finger and means for rigidly securing said members together in a plurality of relative angular adjustments.

l5. lin an ignition apparatus, an oscillatory structure comprising a push ringer, means carried with the push finger providing an arcuate surface struck from a center coincident with the axis of push movement, a push rod mounted on a moving pivot, the other push rod being adapted to enga e finger and being provided Wit a Wedge riding upon the arcuate surface aforesaid, said'wedge and arcuate surface coperating to disengage the push r'od from the push finger substantially as, and for the purpose, set forth.

,16. In an `ignition apparatus, an oscillatory structure comprising a push finger,

provided means carried with the push fingerproviding an arcuate surface, said arcuate surface being struck from a center coincident With the axis of push finger movement on a radius less than the distance from the push finger tip to the axis of push finger movement, a push rod mounted at one end on a moving pivot, the other end of the push rod being a push rod mounted at one end onfa mov- -in pivot, the other end of the push rod y' being adapted to engage the push finger and being provided With a Wedge riding upon the arcuate surface aforesaid,said Wedge the push,- and arcuate surface coperating to disengage vthe push rod from the push finger substantially as, and for the purpose, set forth.

18. An ignition apparatus of the class de- -scribed comprising an oscillating member provided with an arcuate surface struck from a center coincident With the axis of said oscillatory member, a push finger provided on said oscillatory member, side members disposed one on each side of said oscillatory member and secured thereto, each of said side members provided with anarcuate surface struck .from the same center as the' arcuate surface of the first mentioned member, but on' a shorter radius, a push rodhaving one end thereof mounted on a moving` pivot,- and its other end adapted to engage -said push finger, said lastmentioned end of the pushl rod being provided with dcpending -Wedge portions which rest upon the arcuate surfaces of the side members, said AWedge portions coperating with the arcuate surfaces of the side members to disengage the push rod from the push finger, and also, by lying on opposite sides of the first mentioned member, serving to retain the push rod in operative relation to the push fin er. v l

n Witness whereof, I hereunto subscribe my name this 15th day of Se tember, 1920.

V ARTHUR C. KECKNER. Witnesses:

y E. H. LANGDoN, vN. A.. Bo'rsFoRD.

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