US1277078A

US1277078A - Ignition system.

Info

Publication number: US1277078A
Application number: US3884815A
Authority: US
Inventors: John W Jepson
Original assignee: Symington Gould Co
Current assignee: Symington Gould Co
Priority date: 1915-07-09
Filing date: 1915-07-09
Publication date: 1918-08-27
Anticipated expiration: 1935-08-27

Description

J. W. JEPSON.

IGNITION SYSTEM.

APPLICATION FILED JULY 9.191s.

- 1 ,277,078 Patented Aug. 27, 1918.

[NI/EN TOR ATTORNEYS STATES PATENT oFFIoE.

JOHN W. JEPSON, OF DEPEW, NEW YORK, ASSIGNOR- T0 GOULD COUPLER COMPANY, A CORPORATION OF NEW YORK.

IGNITION SYSTEM.

Application filed July 9, 1915.

To wllwhom it may concern:

Be it known that I, Jenn IV. JErsoN, a citizen. of the United States, and a resident of Depew, county of Erie, and State of New York, have invented certain newand useful Improvements in Ignition Systems, of which the following is a specification.

My invention relates to ignition systems and more particularly to ignition systems for the ignition of gas engines. It is especially applicable to the ignition of gas engines driving automobiles.

The general object of my invention is to provide such a system which is not only simple in construction and operation but which is more efficient. To this end I provide a system having a battery and generating armature for feeding the ignition circuit and charging the battery and so arranged that as the speed of the engine and the armature driven thereby is increased on starting, the voltage produced by the armature is added to that of the battery to cause the ignition circuit to more quickly build up so that a more efficient ignition is obtained at such time. As a further feature I arrange the parts so that current through the interrupter or induction coil feeding the sparking devices or both is alternated in direction, thereby preventing the building up of the platinum points, contacts or electrodes by the sparks passing thereacross.

Further objects, features and advantages will more clearly appear from the following description taken in connection with the accompanying drawings which form a part of this specification.

In the drawings, Figures 1 and 2 are dia-' grains illustrating one embodiment of my invention Figs. 3 and 4 are diagrams illustrating a modification; and

Fig. 5 illustrates another embodiment.

Referring to Fig. 1, 1 represents the secondary high tension winding of an induction coil having one terminal 2 connected to the ground, the other terminal 3 being adapted to be connected to sparking devices to supply or feed the same 1n a well known Specification of Letters Patent.

Patented Aug. 27, 1918.

Serial No. 38,848.

manner. The primary i of the induction coil s connected in series in an ignition circuit 111 series with a storage battery 5, armature winding 6, interrupter 7 and commutator 8 provided

witlrcontact portions

9 and 10. A cam 11 operates the interrupter 7 in a: well knowninanner, and a condenser 12 is placed in shunt about the interrupter. A lamp or work circuit 10 is shown conncctcd across the battery to be supplied thereby when the generating armature is not running at sufficient speed. The ignition circuit may be traced as follows: from the positive side of the battery 5, through the primary i of the induction coil, brush 13-, contact 9, armature-or magneto winding 6, brush contact 16, interrupter 7, brush lei, contact 10, brush 15 and to ground to which the negative side of the battery is connected. The armature windings 6 are preferably of the magneto type although carried by an armature structure 17 provided with another set of .n'mature windings connected to a commutator 18 having brushes 19 and 20-, the latter being connected to the ground and the former to the positive side of the battery through a series field coil 21 opposing the shunt fields 22 which set up the necessary field for the armature. In this way the armature windings connected to the commutator will act to supply current to charge the battery and supply the work circuit 40 when running at suificient speed. Suitable automatic and hand switches may be provided for disconnecting the battery from the commutator 18 when the battery has been charged and for opening the ignition circuit when not in use. Instead of opening the charging circuit when the battery has been charged, the charging current may be automatically reduced or eliminated in any suitable or well known manner, leaving the commutator still connected in circuit.

hen the engine for which the ignition system is designed is being started the bat-- tery supplies the necessary current through the ignition circuit above described sufficiently to energize the primary 4-. of the induction coil to produce the required sparks at the sparking devices. Under these conditions the magneto armature winding (5 produces practically no voltage. As the engine speeds up and so drives the armature 17 an electromotive force is generated in the wind ings (5 which, by reason of the commutator S, is always in the same direction as that of the battery 5 in the ignition circuit above described. F ig. 2 illustrates the circuit connections with the electromotive force produced in the windings 6 in the opposite direction from what it was under the conditions of Fig. 1. The ignition circuit in F ig. 2 may be traced as follows: from the positive side of the battery 5, through primary it. brush 13, contact 10, brush 1%, interrupter 7, brush contact 16, armature winding 6, contact to ground and the negative side of the battery. Thus the commutator 8 alternately connects the battery and magneto armature windings 6 whereby the voltage of one is in the same direction as the voltage of the other in the ignition circuit whereby the voltage of the ignition circuit increases with the speed of the magneto. That is, the comn'iutator S reverses periodically the connections between the battery and armature windings 6 so that the voltage generated by the latter and the battery will be in the same direction and cause the ignition circuit to quickly build up. This is important because as the speed of the engine increases with the consequent lessening of the interval of time between sparks a lesser amount of time is given for energizing the induction coil, but with my arrangement the full energization of the induction coil. is obtained because as the speed incr es the windings 6 add an increasing electromotive force to that furnished by the battery to build up and energize the ignition circuit and induction coil.

As shown in Figs. 1 and 2, the induction coil is connected on the battery side of the commutator 8 so that the primary lalways builds up with current in the same direction. The interrupter 7, however, is connected on the magneto armature winding side of the commutator 8 so that the currentthrough the interrupter will alternate at each building up of the ignition circuit, thereby preventing the platinum points or contacts of the interrupter from building up by the carryin of particles from one to the other always in the same direction, as is the case when the current passes through such an interrupter always in the same direction.

The system illustrated in Figs. 3 and t the same as that of Figs. 1 and 2 except that the induction coil is connected on the magneto armature winding side of the commutator 8 instead of on the battery side thereof, so that the current in the primary winding t of the induction coil builds up the coil in alternate directions. The ignition circuit in Fig. 3 may be traced as follows: from the positive side of the battery 5, through the brush 13, contact 10, brush 1 1-, interrupter 7, primary l, brush contact 16, armature windings 6, contact 9, and brush 15 to ground to the negative side of the battery. Vihen the magneto windings 6 build up in the opposite direction the current in windings and interrupter l is in the opposite direction, the circuit being traced as follows: from the positive side of the battery through brush 13, contact 9, windings 6, brush contact 16, primary 4, interrupter 7, brush 1%. contact 10, and brush 15 to ground to the negative side of the battery.

In each case the electromotive force produced by the windings 6 is added to that of the battery, causing the ignition circuit and induction coil to build up more quickly as the speed increases and as time given for building up is decreased. If desired, the interrupter 7 may be placed on the battery side of the commutator 8, but as above pointed out, this is not so advantageous.

The arrangement shown in Fig. 5 is the same as that shown in. Fig. 1 except that the interrupter 7 and commutator S are combined in one apparatus. As there shown, the interrupter is carried upon a disk 26 rotated in synchronism with the engine and armature 17. Each time the disk 26 makes a halt revolution one of the relatively stationary rollers 2'7 engages one arm 28 of the interrupter, causing the interrupter contacts to be separated. a condenser 29 bcing connected in shunt about the interrupter contacts. The disk 26 carries two contacts 30 and 31 adapted to contact with stationary brushes and 33 alternately as the parts rotate. The brush 35 is connected to ground, the contact 31 is connected to one of the interrupter contacts 34. while the other interrupter contact 35 is connected to one terminal of the magneto arn'mture windings (5, the other terminal oi which is connected to the contact 30. The ignition circuit may be traced as follows: from the positive side of the battery through the primary 4t, brush contact 30, windings (S, interrupter contacts 35, 3 t, contact and brush to ground and the negative side of the battery. Upon reversal of electromotive force in windings 6, the contacts 30 and 31 will. be in reverse position, so that the current building up the induction coil will pass from the battery and primary 4, through brush contact 31, interrupter contacts 34, 35 (in the opposite direction from what it was before) windings S (in the opposite direction also) contact 30 and brush to ground and the negative side of the battery. The combined interrupter and commutator of Fig. may be substituted in the systems of any of the other figures, and many other changes and modificatrons may be" made" without departing.

from the spirit and scope or my invention in its broader aspects;

Having fully and clearly described my inventions what I claim as new and desire to secure by Letters Patent, is:

1; A system or the class described having an ignition circuit containing. a battery, magneto armature and interrupter inseries with one another, a commutator acting. toso efiect wnnec'tion of the battery and mag neto. armature that the voltage or one is maintained in the same direction as the volt age of the other in said circuit whereby the voltage of the igi-i-tion circuit increases with the speed of the magneto, a work circuit, and armature windings driven synchronously with the magneto armature and connected' tocharge the battery and supply the work circuit when running at su fiicient speed.

2. A systemof the class described having an ignition circuit with a battery, magneto armature and interrupter in said circuit, a commutator acting toreverse the connections between the battery and: magneto armature so that the voltageof each will always be in the same direction to build up the ignition circuit, and armature windings connected incircuit withthe battery to chargethe battery when running at suflicien't speed g 3. A' systemof the class described having a generating armature, a battery and an ignition circuit in operative relation, and a commutator reversing the connections be. tween the battery and armature so that the voltage generated by the armature and battery will be in the same direction to build up the ignition circuit, said generating armature having windings connected to charge the battery when running at sufficient speed.

4. A system of the class described having an ignition circuit with a battery and generating armature in seriestherein, a commutator reversing the connections between the battery and armature so' that the voltage generated by the armature and battery will be in the same direction to build up the ignition circuit as the speed of the armature increases, said generating armature having windings connected to' charge the battery when running atsufiicient speed, and a work circuit connected across the battery to be supplied by the said last-mentioned armature windings and battery.

5. A system" of the class described having ignition circuit operating with a battery, generating armature and induction coi'l'in series therein and in series with one another, the inductioncoil having a secondary circuit adapted to feed sparking devices, said generating armature having windings connected charge the battery when running at sufficient speed, and a work circuit connected across the battery to be supplied by the said last-mentioned arn'ia ture windings and battery.-

'6. A system or the class described having a generating armature, a battery and an ignition circuit inseries, an induction coil in series in said: circuit, the secondary of which is adapted to supply sparking devices, and a comnmtator reversing the connections between the battery and armature so that the voltage generated by the armature and battery will be in the same direction tO'bIllIl up the ignition circuit and means on said armature for feeding a-- work circuit.

7. A system of the class described having an ignition circuit with a battery, generat i-ng armature a-n'd interrupter in series therein, a commutator reversing the connections between the battery and armature so that the voltage generated by the armature and battery will be llif the same directionto build upthe ignition circuit, and an induction coil in said circuit the secondary of which is adapted to supply sparking devices.

8. A system of the class described having an ignition circuit, a battery, generating armature, and interrupt-er all in series, and a commutator reversing the connections between the battery on the one haud and the armature a 'nd interrupter onthe other hand so that the voltage generated by the arma= ture and battery will be in the same direction to build up the ignition circuit but the current through the interrupter will alternate in direction, and means automatically charging. said battery.

9. A system of-the class described having an ignition circuit with a battery, genera-ting armature, commutator and interrupter all operating in series with one another, a secondary circuit in inductive relation to said ignition circuit, and means revolving with the generating armature and adapted to charge the battery.

10. A system of the class described having. an ignition circuit, a battery, generating armature, commutator and interrupter all in series with one another, anda secondary circuit in inductive relation to said ignition circuit, said commutator reversing the connections between the battery on the one hand and the armature and interrupter on the other hand so that the voltage generated by the armatureand battery will be in the same direction to build upthe' ignition circuit but the current through the interrupter will alternate in direction, and a winding on said armature for charging the battery.

11. A system of the class described having an ignition circuit with a battery, generating armature, interrupter and induction coil inoperative relation thereto, and a commutator reversing the connections between the battery on one hand and the armature, inter rupter and induction coil on the other hand,

' duction coil will alternate in direction.

12. A system of the class described having an ignition circuit with a. battery, generating armature and induction coil in ope ative relation thereto, and a commutator reversing the connections between the battery on one hand and the armature and induction coil on the other hand, whereby the voltage generated by the armature and battery will al ways be in the same direction to build up the ignition circuit but the current through the induction coil will alternate in direction.

18. A system of the class described having an ignition circuit with a battery, generating armature, interrupter and induction coil in series therein and in series with one another, and a commutator reversing the connections between the battery on one hand and the armature, interrupter and induction coil on the other hand, whereby the voltage generated by the armature and battery will always be in the same direction to build up the ignition circuit but the current through the interrupter and induction coil will alternate in direction.

14. A system of the class described having an ignition circuit with a battery, generating armature and induction coil in series therein and in series with one another, the induction coil having a secondary circuit adapted to feed sparking devices, and a commutator reversing the connections between the battery on one hand and the armature and induction coil on the other hand, whereby the voltage generated by the armature and battery will always be in the same direction to build up the ignition circuit but the current through the induction coil will alternate in direction.

15. A system of the class described having an ignition circuit with a battery, gene 'ating armature and induction coil in operative relation thereto, the induction coil having a secondary circuit adapted to feed sparking devices, and a commutator reversing the connections between the battery on one hand and the armature and induction coil on the other hand, whereby the voltage generated by the armature and battery will always be in the same direction to build up the ignition circuit but the current through the induction coil will alternate in direction.

16. A system of the class described having an ignition circuit with a battery, generating armature and induction coil in series therein and operating in series with one another, the induction coil having a secondary circuit adapted to feed sparking devices.

17. A system of the class described having an ignition circuit with a battery, generating armature, interrupter and induction coil in series therein and operating in series with one another, the induction coil having a secondary circuit adapted to feed sparking devices.

18. A system of the class described having an ignition circuit, a battery. generating armature and induction coil all in series with one another, and a commutator reversing the connections between the battery and armature so that the voltage generated by the armature and battery will be in the same direction to build up the ignition circuit. the induction coil having a secondary circuit adapted to feed sparking devices, and the armature having a winding thereon for feeding a work circuit.

19. A system of the class described having an ignition circuit with a lmttery adapted to feed the same and an interrupter in operative relation thereto, a generating armature having two windings, one cooperating with the battery to teed the ignition circuit and one connected to charge the battery. and a secondary circuit in inductive lation to said ignition circuit.

20. A system of the class described having an 'ignilitm circuit; with a battery adapted to feed the same and an interrupter in operative relation theretoya generating armature having two windings. one cooptaating with the battery to teed the ignition circuit and one connected to c large the battery, and an induction coil in the ignition circuit having a secondary adapted to feed. sparking devices.

- 21. Av system 01 the class described having an ignition circuit with a battery adapted to feed the same and an interrluiter in operative relation thereto, a generating armature having two windings, one connected to feed the ignition circuit and one connected to charge the battery, and a commutator reversing the connections between the battery and armature so that the voltage generated by the armature and lmttcry will be in the same direction to build up the ignition circuit.

22. At svstem of the class described having an ignition circuit with a battery adapted to feed the same and an interrrupter in operative relation thereto, a generating armature having two windings, one connect:- ed to feed the ignition circuit and one con nected to charge the battery, the battery and first mentioned armature winding being in series with one another in said circuit, and a conmmtator reversing the connections between said first me t oned armature winding and the battery, whereby the voltage gener ated by said first mentioned armature winding and battery will be in the same direction to build up the ignition circuit.

- 23. A system of the class described having an ignition circuit with a battery adapted tofeed the same and an interrupter in operative relation thereto, a generating armature having two windings, one connected to feed the ignition circuit, and one connected to charge the battery, an induction coil for feed ing sparking devices, the induction coil, battery and said first mentioned armature winding being in series with one another in said circuit, and a con'nnutator reversing the connections between the battery on one hand and the first winding and induction coil on the other hand, whereby the voltage generated by said first mentioned armature winding and battery will be in the same direction to build up the ignition circuit but the current through the induction coil will alternate in direction.

Qet. A system of the class described having an ignition circuit with a battery adapted to feed the same and an interrupter in operative relation thereto, a generating armature having two windings, one connected to feed the ignition circuit and one connected to charge the battery, an interrupter for the ignition circuit, the interrupter, battery and said first mentioned armature winding being in series with one another in said circuit, and a commutator reversing the connections between the battery on one hand and the first mentioned armature winding and interrupter on the other hand, whereby the voltage generated b said first mentioned armature winding and battery will be in the same direction to build up the ignition circuit but the current through the interrupter will alternate in direction.

25. A system of the class described having an ignition circuit with a battery, a generating armature and an induction coil with its primary in series therein, and a commutator reversing the connections between the battery and armature so that the voltage generated by the armature and battery will be in the same direction to build up the ignition circuit, the primary of the induction coil being on the battery side of the commutator so that it always builds up in the same direction.

26. A system of the class described having an ignition circuit with a battery, a generating armature and an induction coil with its primary in operative relation to said circuit, and a commutator reversing the connections between the battery and armature so that the voltage generated by the armature and battery will be in the same direction to build up the ignitioncircui t, the primary of the induction coil being on the battery side of the commutator so that it always builds up in the same direction, and connections whereby the secondary of the induction coil is adapted to supply sparking devices.

mentioned armature by one winding, an induction coil the secondary of which is adapted to supply sparking devices, said second armature winding and the primaryof the induction coi being connected in circuit in series with the storage battery, an interrupter in series in said circuit, and a commutator acting to so connect the battery and said second armature winding that the voltage applied to said circuit by the second armature winding will always be in the same direction as that of the battery.

28. In a system of the class described a storage battery, generating means comprising a magneto armature winding and an armature winding connected to charge the battery, an ignition circuit having the battery and said magneto armature winding in series therein, a coil in inductive relation to said circuit for supplying sparking devices, and an interrupter and commutator in said circuit, said commutator acting to so connect the battery and magneto armature winding that the voltage of one is in the same direction as the voltage of the other in said circuit.

29. In a system of the class described a storage battery, generating means comprising a. magneto armature winding and an armature winding connected to charge the battery, an ignition circuit having the battery and said magneto armature winding in series therein, an induction coil having its primary in series in said circuit and its secondary adapted to supply sparking devices, and an interrupter and commutator in said circuit, said commutator acting to so connect the battery and magneto armature winding that the voltage of one is in the same direction as the voltage of the other in said circuit.

30, In a system of the class described a storage battery, generating means comprising a magneto armature winding, anignition circuit having the battery and said magneto armature winding in series therein, an induction coil having its primary in series in said circuit and its secondary adapted to supply sparking devices, and an interrupter and commutator in said circuit, said commutator acting to so connect the battery and magneto armature winding that the voltage of one is in the same direction as the voltage of the other in said circuit.

31. In a system of the class described a storage battery, generating means comprising a magneto armature Winding and an armature winding connected to charge the battery, a Work circuit connected to be supplied by the battery and said second armature winding, an ignition circuit having the battery and said magneto armature Winding the same direction as the voltage of the in series therein, an induction coil having other in said circuit. 10 its primary in series in said circuit and its In testimony whereof, I have signed my secondary adapted to supply sparking dename to this specification.

vices, and an interrupter and commutator JOHN W. JEPSON. in said circuit, said commutator acting to \Vitnesses:

so connect the battery and magneto arma- P. V. ENGLISH,

ture winding that the voltage of one is in A. R. CLIFFORD.

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