US811656A

US811656A - Spark-coil.

Info

Publication number: US811656A
Application number: US22593004A
Authority: US
Inventors: Charles P L Noxon
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-09-26
Filing date: 1904-09-26
Publication date: 1906-02-06
Anticipated expiration: 1923-02-06

Description

No. 811,656. PATENTED FEB. 6, 1906. O. P. L. NOXON.

SPARK COIL.

APPLICATION FILED SEPT. 26, 1904.-

2 SHEETS-SHEET 1.

No; 811,656. PATENTED FEB. 6, 1906.

G.P.L.NOXON.

SPARK COIL.

APPLICATION FILED SEPT. 26. 1904.

2 SHEETS-SHEET 2.

WITNESSES: INVENTOR 4/ Z I ATTORNEYS To all whom it may concern:

connected in a circuit.

UNITED STATES PATENT OFFICE.

I Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed September 26, 1904. Serial No. 225,930.

Beit known that 1, CHARLES P. L. Noxon, of Syracuse, in the county of;Onondaga and State of New York, have invented a certain new and useful Spark-Coil, of which the following is a specification.

My invention relates to induction-coils which are particularly efiicient in use; and it conslstsm the combmations and means herei inafter set forth and claimed. In describing this invention reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is a diagrammatic view of a preferable construction of an induction-coil embodying my invention, shown as operatively Fig. 2 is a similar diagrammatic view illustrating a modified construction embodying said invention. Fig. 3 is a top lan of an induction-coil arranged in a case, t e cover of the case being removed. Fig. 4 is a vertical sectional view on line A A, Fig. 3.' Figs. 5 and 6 are views similar to Fi 4, illustrating modified constructions of induction-coils, a mechanical means formakiFng and breaking the circuit being shown in 1 is a primary conductor, 2 a secondary conductor, and 3 a core, all of which parts maybe of any desirable form, size, and con-' struction suitable for use in induction-coils. The conductors 12 are respectively connected in the ordinary manner in a primary circu1t and a secondary circult, and a suitable source of electric energy 4, mechanical means 5 for making and breaking a circuit, and a current interrupting means are connected in the primary circuit, the means 5 being usually the ignition-controlling mechanism of the internal-combustion engine to which my induction-coil is connected and the currentinterrupting means comprising a terminal 6. An armature 7, which is normallyin electrical contact with the terminal 6, is moved from the terminal for breaking the primary circuit and is engaged with said terminal for completing the circuit by any suitable means, as a spring 8.

9 is an electromagnetic means for attracting the armature 7 when the primary circuit is broken by the current-interrupin means and for preventing such armature rom: returning into engagement with the terminal 6 to complete the, circuit. Said electromagnetic means 9 is preferably arranged with its core extendin longitudinally between the armature 7 an the core 3 and forming, essentially, a continuation of said core 3 and with its coil or conductor connected in shunt inthe primary circuit. 1t thusfollows that the electromagnetic means 9 bridges the gap formed in the primary circuit when the armature 7 is separated from the terminal 6.

, The conductor or coil of the electroma netic means 9 is of high resistance relative y to the portion of the primary circuit throng which no current passes when the circuit is broken at the terminal 6 in order that the major part of the current may 1pass through the terminal6 instead of throug such means 9, and said electromagnetic means is insufficient in power to attract the armature 7 when engaged with theterminal 6; but when the armature 7 is attracted by the core 3 the means 9 is of sufficient strength to prevent the return of the armature until the mechanical means 5 breaks the primary circuit, whereupon the means 9 loses its power and ceases to attract the armature 7, whichthen returns into contact with the terminal 6. The electrical resistance of the electromagnetic means 9 is suflicient to reduce the amperage of the current flowing over the primary circuit when the armature 7 is separated from the terminal 6, so that the core 3 is prevented from performing its necessar function of causin a magnetic field capa le of making the in uction-coil operative and also has no perceptible influence on the armature to prevent the return thereof.

As preferably constructed the electromagnetic means 9 is provided with a spur 10, in-

serted into the opposing end of the core 3, and is also provided with an external electric conducting-case 11, which encircles the coil or conductor of said means and is arranged with one end face in substantially the same plane as the face of the core of said means engaged with the armature 7.

In Fig. 5 I have shown a modified construction of the electromagnetic means for preventing the return of t e armature, the same com risin two cores 12, driven into the core of t e in notion-coil, and coils 13, wound around the projecting ends of said cores.

The electromagnetic means 9 for preventing the return of the armature when the cur- IIO alinement with the core 3, in which event the armature of the current-interruptin means is not attracted by the core 3. In t 's form of my invention the current does not flow through the primary conductor of the induction-coil when the armature is out of contact with the terminal engaged by said armature to com lets the primary circuit.

To t ose skilled in the art it Will be understood that by preventing the return of the armature of the current-interruptingmeans immediately after the current is broken the roduction of more than one spark is avoi ed, and the current passes through the mechanical means 5 uninterruptedly and with maximum power and with minimum wear of the I separable contacting surfaces of the currentinterrupting means, owing to the elimination of unnecessary makes and breaks of the circuit. Moreover, when the mechanical means 5 operates to break the circuit a small current is passing over the same, and a minimum amount of sparkin and wear of the separable contacting 'sur aces of the primary circuit results. My invention is therefore particularly ractical and efficient, especially when use with internal-combustion engines, in which great difliculty is experienced by undue corroding and burning of the terminals for igniting the charges, and as my inductioncoil 1s excited but once for each explosion it is therefore especiall economical in connection with engines w 'ch are run at varying speeds.

The construction and operation of my induction-coil will now be readily understood upon reference to the foregoing description and the accompanying drawings, and it will be apparent to those skilled in the art that more or less change may be made therein without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a primary circuit, a secondary circuit, means for interrupting the current in the primary circuit, means for holding the first-mentioned means in its position assumed when the current is interrupted thereby, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose described.

2. The combination of a primary circuit, a secondary circuit, means actuated by the current in the primary circuit for interrupting the'current 1n said primary circuit, electromagnetic means for holding the first-mentioned means in its position assumed when the current is interrupted thereby, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose specified.

3. The combination of a primary circuit, a secondary circuit, means for breaking the prierases mary circuit to interrupt the current therein, electroma netic means for holding the firstmentione means in its position assumed when the current is interrupted thereby, said electromagnetic means being connected in the primary circuit to bridge the gap formed in the primary circuit by the first-mentioned means to interrupt the current therein, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose set forth.

4. The combination of a primary circuit, a secondary circuit, means actuated by the current in the primary circuit for breakin the primary circuit to interrupt the current t erein, electromagnetic means for holding the first-mentioned means in its position assumed when the current is interrupted thereby, said electromagnetic means being connected in the primary circuit to bridge the gap formed in the primary circuit by the first-mentioned means to interrupt the current therein and being of greater resistance than. the part of the primary circuit through which no current passes when the first-mentioned means has interru ted the current, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose described.

5. The combination of a primary circuit, a secondary circuit, means for interrupting the current in the primary circuit comprising a terminal in the primary circuit, an armature movable relatively to the terminal for mak ing and breaking the primary circuit at the terminal, electromagnetic means for holding the first-mentioned means in its position assumed when the current is interrupted there by, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose specified.

6. The combination of a primary circuit, a secondary circuit,electromagnetic means having a core, and conductors connected respectively in said circuits, means for interrupting the current in the primary circuit, the operation of said means for interrupting the current being effected by the magnetic action of the core, means for causing the sec ond-mentioned means to return to its position assumed before the o eration thereof to interrupt the current in tiie primary circuit, means for holding the second-mentioned means in its position assumed when the current is interrupted thereby, and mechanical means for making and breaking the primary circuit, substantially as and for the purpose set forth.

7. The combination of a primary circuit, a secondary circuit, means for interrupting the current in the primary circuit, said means including an armature, and a plurality of means connected in the primary circuit for attracting the armature, one of said means continuing to attract the armature after the other mentioned means to return to its position as, 'sumed before the operation thereof to interru'ptthe current in the primary circuit, electromagnetic means forholding the first-mentioned means in its position assumed when the current is interrupted thereby, saidelectromagnetic means having a core arranged endwise relatively to the first-mentioned core and forming essentially a continuation thereof, and mechanical means for making and breaking the primary circuit, substantially as 1 and for the purpose specified.

9. The combination with an induction-coil, of means'for making and breaking'the primary circuit of the induction-coil, and means for breaking and holding open the primary circuit during the time the first-mentioned means is in its position assumed when making the primary circuit.

10. In an induction-coil, a core, a primary conductor, and electromagnetic means having a conductor connected in circuit with the primary conductor, and a core fixed to the first-mentioned core, substantially as and for the purpose set forth.

11. In combination, an armature, the primary conductor of an induction-coil and means for attracting the armature independ' .ently of the primary conductor, said means being in electrical connection with the primary conductor when the circuit therethrough is complete, substantially as and for the purpose specified.

12. In an induction-coil, a core, a primary conductor, electromagnetic means arranged end to end relatively to the core and having a conductor connected in circuit with the pri mary conductor when the circuit through said primary conductor is complete, a core forming essentially a continuation of the firstmentioned core, and a conducting-shield encircling the conductorof the electromagnetic means, substantially as and for the purpose described.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 24th day of September, 1904.

CHARLES P. L. NOXON.

Witnesses:

D LAVINE, F. G. BODELL.