US1029903A - Sparking device for internal-combustion engines. - Google Patents

Description

O. O. WILLIAMS. SPARKING DBVIOE FOR INTERNAL GOMBUSTION ENGINBS. APPLICATION I'ILED DEG.1l, 1909.

1,029,903. Patented June 18,1912.

UNITED sTATEs PATENT orrion CHARL C. WILLIAMS, OF CLEVELAND, OHIO, -ASSIGNOR T0 THE G; H. WILLIAMS COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

SPARKING DEVICE FOR INTERN AL-COMBUSTION ENGINES.

To all whom may concem:

Be it known thatI, CHARL C. WILLIAMs, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Sparking Devices for Internal-Combustion Engines, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to sparking devices for internal combustion engines,.its object being to provide a device of this Character in which the length of time in which the prima-ry Circuit is closed, may be independent of the speed of revolution of the engine, in an efficient and economical manner.

A further object is to so arrange'the parts that theymay be readily accessible, so that they may be co-nveniently removed, repaired, or new parts substituted.

The said invention consists of means which hereinafter are fully described and more particularly set forth in the claims.

The annexed drawing and'the 'following description set forth in detail certain mechanism embodying my invention, the disclosed means, howe-ver, constituting but oneI of various mechanical forms in which' the principle of .the invention may be applied.

In said annexed drawingz-Figure lis an end elevaton of a device embodying my invention. Fig. 2 is an ax'ial cross'section thereof. 'Fig. 3 is a cross section taken upon the plane indicated by line III -III in Fig.

2, and viewed in the direction indicated by the arrow in said figure. Fig. t is an ele- Yation of the end of the device, opposite that illustrated in Fig. 1. Fig. 5 is a detail cross-section.v F ig. 6 is a section similar to that. shown in Fig. 3, illustrating a modified form of my invention. i

`As iscustomary, the timer or cam shaft VA projects into the housing of the sparking device embodying my invention. This housing comprises three main `parts, 1a part B, which carries the terminals z and t, mounted in suitable' insulating thimbles t2, of the secondary circuits, and which' is of the ordinary well-known construction,

Specification of Letters Patent.

Application filed December 11, 1909.

Patented June 18, 1912.. Serial No. 532,527.

further" amplification of the description thereof being thereforeunnecessary in this application. A second member C of the housing is provided with a ball bearing c, and in this bearing is mounted the journal a of the timer or cam shaft, suitable balls being interposed between the journal and 'bearing, as is shown. Upon this housing member C is mounted a third and inclosing housing member D, which is removably secured to the member C by means of suitable screws (Z. An opening (Z' is provided in the member D,

,through which the shaft A projects. The

gine. As shown in Fig.V 6, the shaft is provided with a recess (L2, in which is located a coil-springta',3 bearing upwardly against a cylindrical pawl at. The outer end of this pawl bears against the interior surface of the toothed member E, in which surfaceis formed a groove e' beginning in the cylindrical interior bearing surface of member E, and ending in a shoulder 62., As shown, the shoulder is formed at that end of the groove farthest removed fro-m its point of intersection with the cylindrical bearing surface above referred to, in the direction of forward rotation of the engine, such forward direction being indicated by the arrows in the figure. It will therefore be seen that '/when the engine, and consequently the shaft, is rotated in the forward direction, the member E and the shaft are fixed to each `other,

and when the engine and shaft are rotated in the opposite direction, the member E may be held in a stationary position without interfering with the continued onposite rotation of such shaft, the pawl a* disengaging such member E, as will be readily understood.

Each tooth is 'formed with a radial surformed therein, Fig. 5, is a member H formed r 111g o nected in the usual manner,to oneof the terminale K of the primary .circu1t, the otherv face' e3 and 'with a tangential surface 6*, which is continued 'across 'the member E until it joins'the inner. end of the adjacent` radial surface 63,.. As shown, the radial sur- 5 faces 63 are'I located in advance of the tangential surfaces 84, with reference to the for- Secured upon -the interior of the housing member 'D'andl adjacent -to an opening d* with a split nut h, whose thread is engaged oby'a thumb screw J having its head upon the exterior and its'inner end projectmg 2-5' toward and -in the path of oscilla-tion of the oscillatory member F.. This screw forms a' second contact member, and ,its supporting member His suitably insulatedfromthe casas shown. The said member H 1s conterminal of such circuit being grounded through the engine, as Will be understood. VAs will be noted, the inner or contact end of the screw J may be'adjusted toward or from the oscillatory member F byjturning the screw. The latter is .fixed m\ any desired position by means of av suitable' screw .f passing through the split'porti'on of the nut, 4G as'will be understood. 1

i the form of the I Fig. 3, the memberF is provided wlth a `-yielding portion f whichcarries Lthe contact pointl f' which makesthe direct contact'between the member F and the inner enjd of '50 an interior space,

`- the osci ,the screWJ The lfree, end of the member fis ,provided with a book-portion, z, against whose inner surface the outer or free end j'of 'the spring normally rests. `This leavesv into which during `contact will be pressed, away from the the 'sprin I inner sur acerpf the hook portion 2 and] 1n y the reverse'direction offmovem'entrthereof. When the above described'structure is in f its normal ori'esting position, in which the rotaryzmember E is out of engagement with occupie's a normal .or neutralvposition in which the axis of member F`,`;point o f -at 6,07 tachment 'of 'spring Gr with the latter, and

point of attachment of thezsprin'g with the casing D,

fore be noted thatthe member F is .capable of movement in both directions vlaterally of said neutral position. 1;[n this position the device illustratedl in llatory contact member F; the latten` are infalin'ement; VIt will therer 'contact'screw J is out of engagement with the oscillatory member F.

When the engine is rotated in a forward` direction, the teeth e successively engage the oscillator;7 member F, and movesame away froinv the inner end of the screwcJ, against the action of the spring G.

'fter the eng'aging tooth has passed a give'ndistance, y-

member F is released and snaps toward the screwls end, as the result of` the action of the spring, and a dist-ance'suflicient toucause the contact portion f' to engage the contact portion of the screw. Immediately after such contact, the spring' again positively returns the member F to its normal position, which .position it occupies until thenext tooth repeats the same o eration. It will be seen that ythe length of`1p time during vwhich contact is maintained-.between 'the screw end and the contactvportion f' depends upon the dist-ance'between said contact portion when l`the member is in its normal position, and

such screw' end. That is, the nearer the screw end is to such portion f'. when said member is in said normal pdsition, the longer will such contact, an the farther away that said two parts are, the shorter .will be-'such contact. The strength of the spring G is made such that the member F will 'always recover its normalrposition before the' next succeedingl tooth .comes into action, so that it will beseen that the length of time of the successive contactperiods will always be independent oflthe Velocity, of revolution of the teeth '8, and hence in-' dependent of -the Velocity of the timer or cam shaft. The total'lengt-h of time, therefore, in which the primary` circuit is complete a's directly proportionate to the numberof revolutions for any given adjustment/ of thescrew J.'

By mounting the two contact members F and J on the detachable housin member D and securing them by means o the removable screws d', it will be seen tthat these parts of the mechanism lmay be'readily detachedfor inspection and removed for repairs. These parts, when 'embodied in an automobile, mayalso be removed and car.- ried away for the purpose'of preventing janautomobi'le from being-stolen dr used byV unauthorized persons.

Instead of providing'the oscillatory memi ber F with the'yielding port-ion or spring f,

the\ said member F may-,be hmadej'rigid throughout, andthe yieldi'ngA portionA of .the mechanism be 'made a part of 'the adjustable contact membe`r J Such a modification is shown 1n.Fig. 6, in whichthe inner end -of the screw is shown` to be provided with a .centralbore into which projects a pin facarr'ying upon its outer lend 'a head fi, which latter forms the direct' contact portion .ofv

the member. A suitable coil spring f5 is'interposed betweenv theqhead ftandthe main body of the screw, as Will; be readily under- Stood.

Having fully described my invention, What I claim therefore, and desire to secure by'Letters Patent is `'1. In a sparking device for internal combustion engines, the combination of an oscillatory contact member arranged to have a neutral position and movable in both directions laterally from said position; a second contact member =\normally out of contact With said oscillatory member; and a member adapted to intermittently engage and disengage said oscillatory member, Whereby said two contact members are caused to engage each other, the engagement of said engaging member With said oscillatory member'being such as to effect the movement of the latter away from said second contact member; said oscillatory member being free from electrical connection during such lastdescribed movement. i

2. In a sparking device for internal combustion engines, the combination of an oscillatory contact member arranged to normally occupy a neutral position; movable in bothv directions laterally from said position, and

provided with al yielding portion; a second and stationary contact member normally out of contact With said oscillatory member, and lying in the path of oscillation of said yielding portion of the oscillatory member; and a member adapted to intermittently engage and disengage said oscillatory member to effect its oscillation in both directions laterally of said neutral position, Whereby said yielding portion iscaused to intermittently engage said stationary contact member; said oscillatory member being free from electrical connection during its oscillatory movement away from said latter member: said engaging means being adapted to effect the positive movement of said oscillatory contact member away from said stationary contact member, the latter being always out of engagementwith said oscillatory contact member during such' movement.

3 In a sparking device for internal combustion engines, the combination of an oscillatory contact member, spring means tending to Iimpart to said member a neutral position, and arranged to permit it to move in both directions laterally of said neutral position and against the action of said spring means; a member adapted to intermittently engage and disengage said oscillatory member; and a stationary contact member lying inl the path of said oscillatory member, normally out of engagement there- With, the movement imparted to the oscillatory member by'the engagement of the engaging member being in a direction away from said stationary member; said oscillatory member being free from electrical connection during its movement away from said stationary member.

4. In a sparking device for internal combustion engincs, the combination of an oscillatory contact member; means tending to impart to said member \a neutral position while allowing it'to move in both directions `laterall`y of said position and in opposition to said means; a member adapted to intermittently engage and disengage said oscillatory member, Whereby such movement in both directions is effected; and a second contact member lying in the path of oscillation of said oscillatory contact member; one of said contact members being provided With a y'ielding member comprising the contact portion thereof; said oscillatory member being free from electrical connection during its movement aivay from such .second contactmember; said 'engaging means beingadapted to effect the positive, movement of said oscillatory contact member away from saidA stationary contact `member, the latter being always out of engagement with :said oscillatory contact member during such movement.

5. In a sparkingdevice for internal combustion engines, the combination of a suitableV housing member; an oscillatory contact member mounted on said member; a

coil-spring having one of its ends secured to said housing member andits other end secured to said oscillatory member; a second contact member; said spring adapted to impart to said oscillatory member a normal position in which it is out of contact With said second contact member, and whereby it may be moved toward and from the latter in opposition to such spring; and a member adapted to intermittently engage said oscillatory member to move same away from said second-named contact member, ivhereby such oscillatory member is intermittently released and impelled toward said secondnamed contact member by the action of said spring.

6. In a sparking device for internal combustion engines, the combination of a suitable housing member; an oscillatory contact member mounted on said member; a coil-spring having one of its ends secured to said housing member and its other end secured to said oscillatory member; a second *contact member; said spring adapted to impart to said' oscillatory member a normal position in which it is out of contact with said second contact member, and whereby it may be moved toward and fr'om the latter in opposition to such spring; and a member adapted to intermittently engage said oscillatory member to move same away from said second-named contact member, whereby such oscillator)7 member is intermittently released and impelled towardsaid secondnamed contact member by the action of said spring; said OsLll'atoI 'y member being free' osella tor'7 contect member during nhV1 of electrical' cpnnection 8Ltall times while; movement z 10 I oul'J of contact With said secondmmed `Vcon- Signed by me, this 9th day of December,

ta-et member; said engaging means being 1909.

5 adapted mflecfi the positive movement of CHARLE c. WILIAMS/ x 'said oscillatory contact member away from Att'ested by'- f said statonary -contact memberrthe' lat'cer` CUIT' B. MUELLER,

being alwys gut of engagement with said WINIFRED WALTZ.

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