US995489A - Ignition system for internal-combustion engines. - Google Patents

Description

I c. L. SILVA. V IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED IEB.23,1910.

995,489. I I I r I Patented June20, 1911.

WITNESSES. INVENTOR QUPMa/m. Claude L. SLlvco,

J Q. KW

A TTORNE Yd UNITED STATES PATENT OFFICE.

CLAUDE L. SILVA, OESAN DIEGO, CALIFORNIA, ASSIGNOB OF TWENTY-FIVE AND ONE- HALF bNE-HUNDBEDTHS T0 PERCY J. BENBOU'GH AND FORTYNINE ONE-HUN- DREDTHS T0 H. GOON, JOHN A GILLONS, CLAIR A. NELSON, N. HABGBAVE, W. V.

OFABRELL, D. A. GABRA, L

iflIAN 1?. OWEN, A; O, WALKER, N. D. KUHLMAN, F. M.

MADISON, v. E. HAWKmsFI." "1. -1 anocKEr'r, Am) r. .J. BENBOUGH, ALL or sen DIEGO, CALIFORNIA.

reunion" s rs'rnm ron INTERNAL-COMBUSTION- Enemss.

Specification of Letters If'ateizt;

-Paana una2o;1911.

Application filed February 23, 1910. Serial n. 5,288.

To all whom it may concern: 7

Be it known that I, Cnarinn L. S1LvA,'a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Ignition Systems for Internal-Combustion Engines, of which the following is a specification.

My present invention relates generally to ignition systems for internal combustion engines and more particularly to an improvement upon the system shown and'described in my pending application filed'fMay'21, 1.909, and serially numbered 498088 ,which embodies a single condenser which alter nately charges and discharges upon successive contacts'made at the timer, an'dm which it is necessary to provide the timer The object of my present inventionis', therefore to provide an improvement with respect .to the adaptation of ,my improved system to the use of timers which are ployed on the use .0 mentioned. I accomplish this-primarily by the use of two condensers which are'connected in series and charged from a suitable source of constant current of uniform poten tial, and by'arranging-the circuits whereby at the malie of each thereof, one orb-these condensers is discharged and the other, is

charged, this operation alternating throughout the cycle of operations. a

In the accompanying drawing,"Figure 1 is a diagram of my improved apparatus as applied to a two-cylinder engine, uni- Fig.2 is the same as applied to a fours-cylinder enme. a 7 ga Referring now tojthese figures, 10 represents a battery-supplying a constant current throu h conductorsll and 12 which are bridgec l adjacent said battery by the condensers 13 and 14, connected in series by v a wire 15 from which leads round wire 16.

current suppl means or "hat m 'ya Thus, initially, the potentia in each'of the condensers is equal to one-half that of the battery 10, which course be a generator to be e spark plug of resent systems and thus obviate additional segments as .above driven without definite relation to the engme. i Z

The conductors 11 and lead current and 18 of the bus-bar andfth ro'ugh the rimaries 19.0f the 'spark' coils-which imliice into their respective secondaries'20 and raise the potential suflicient ,mycause' a s ark to Jump the gap-iii their respectives ar plugs 21. From the. primaries 19, t e current leads throngh'conduct'ors '22 to the respective segments 23, 24, 25 and 26,0f the timer "27, the rotating brush 28 of which is grounded -ZQ. 1

The operation is as follows: Condenser 13 is at zero potential when the timerbrush 28 IS contacting with segment23 and condenser denser 14 to rise in potential to that of the battery 10. ;-As the timer brush 28 revolves 'and makes contact with'se'gment' 2413f the tuner, and at the instant of contact, current tion coil 19, contact through .ground 16,- into common con ductor 15,, completing the circuit of condenser 14,-c aus ing this condenser to rapidly fall to zero,,potentia As the potential of condenser '14- falls, lines of force thread throu h secondary coil 20 inducing current, by induction therein,of sufiicient Volta e to 'm'np the spark plug 21, causinga spark t erey. At such a time thereafter current flows from battery 10 into switch 31 through conductor 18, rimary winding 19, into conductor 22, throng contact 24 of timer, into brush 28, to ground; wire 29, into and through condenser 13, over conductor 11, charging condenser 18 to potential of the battery 10. As

through thesplit-and separated. portions 17 flows, from condenser-14min;- line conductor 12,.sw1tch 1, and conductor 18,into24i%nduc-- into timer brush 28, into "grinind wire 29}, and

14 -has the potential of thebattery 10 due to a the; flowing from battery 10, over conductor 'll, thrqugh switch 31, into conductor the timer continues to revolve, it makes contact with segment 23, cau'sing condenser 13 to di charge, creatin a ssark thereby. This .comp etes a full cyc e. bviously t the second or condenser-chargin current flowing in opposite relation to t e first or. disor a dirty plug. This is due in part to the absence of mechanical devices such as cams, relays, vibrators and contacts which depend upon their proper adjustment for successful operation. v

In installing my improved system where a present system is in operation, the onl change to be 'm'adein the latter is to split- 1 its bus-bar to receive the current conductors,

and this, together withthe absence of all f expenslve parts such as magnetos insures a low first cost, while the fact that there is.

nothing to be adjusted, no lag ing to compensated, or remedied, and .t at the current consumption is-strictly in accordance with the number of ignitions made, insures an economical maintenance. J t A dual or alternative system magebe eref ated by supplyin a battery 30 to cut in by meansof ouble pole, double throw switch 31 in the conductors l1 and 12, and

uith this arrangement the system operates through the ordinary vibrators. W1th the condenserscut in, however, the discharge is Copies of tl ils'patent may be obtained for so rapid that.the vibrator'has not time to oscillate, and this fact eliminates the time constant that everfllvibrator has and permits synchronous spar 'ng with relation to the position of the pistons of multicylinder engines.

I claim: I

1. In an ignition system, a current source, two condensers in series havin their neutral point grounded and their connected to the current source, an induc tion coil having its primary and secondary winding connected to a pole of the current source, an ignition device in the secondary circuit, and a timer in the primary circuit.

2-. In an ignition system, a source of current, two condensers in series having. their. middle point grounded and their free terminals connected to thecurrent source, induction coils the primaries of which are connected to the current source, i ition devices connected to thesecondarieso the induction coils, and means for producing a dischar e of one condenser through the primary win" ing of a coil' andat the same time causing the other condenser to receive the full potential'of the current source. I

3. In an electric gnition system, a current source, a pair of condensers in series havlng their middle point grounded and their free 2 terminals connected to the current source, a

timer h g a g ound connection, contacts" ree terminals controlled by said timer, induction coils having their primaries connected to the current. source and to the aforesaid contacts,-

and ignition devices connected to the second aries of the induction coils.

In testimony whereof I afiix my signature in presence of two witnesses.

CLAUDE L. SILVA.

Witnesses:

- F. A. BARRON, E. F. CAMP.

five centseach, by addressingthe Commissioner of Patents, Washington, D. C." I

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