US1549890A - Ignition system - Google Patents

Description

Aug. 1s, 1925. 1,549,890

E. B. NOWOSIELSKI 'l IGNITION SYSTEM 'Filed March 51, 1921 2 sheets-sheer 1 INVENTOH www 51A/wwwa Patented Aug. 18, '1925.

UNITED STATES' 1,549,890 PATENT OFFICE.

EDWARD B. NOWOSIELSKI, F BLOOMFIELD, NEW JERSE'I, ASSIGNOR TO SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

IGNITION SYSTEM.

Application led March 31, 1921. Serial No. 457,379.

To all whom it may concern:

lBe it known that I, EDWARD B. NowosiELsKI, a citizen of the United States, residing at Bloomfield, in the county of Essex,

State of New Jersey, have invented certain new and useful Improvements in Ignition Systems, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

This invention relates to an ignition system employing distributing mechanism for high tension currents.

rlhe invention has for its object means for furnishing high tension currents to both the regular ignition circuits of an internal coinbustion engine and to an auxiliary circuit or circuits, such as for example, the circuit of an ignition mechanism in a fuelize1".

The fuelizer herein referred toy is completely described in the Journal of the Society of Automotive Engineers of September, 1920 and a detailed description needl not be given here as it forms no part of the 26 present invention. In brief, however, the device comprises a passageway parallel to the main passageway in a carbureter ythrough which a 'small amount of carbureted gas is shunted and ignited; the burnt 3o gas being injected by suitable means into .the incoming main supply to the engine so as to mix with, heat and dry the incoming gas for better consumption within the engine.

It is a specific object of this invention to provide in an ignition system a .magneto having a distributor block for the regular cylinder ignition circuits of an internal combustion engine and a separate distribui tor block for the ancillary circuit or circuits, the high tension current being fed to the conductive elements of both blocks by a common rotary distributing finger.

In the accompanying drawings there is shown a specific embodiment of my invention, in which Figure l Yisa vertical medial section through a magneto adapted for use in the system provided with my novel distributing mechanism, the distributor finger being shown in vertical position and in position to distribute the current to the `ancillary device.

YFigure 2 is an end View of the magneto,

with the cover plate removed, the distributing linger being in position to distribute the current to one of the regular cylinder ignition circuits.

Figure 3 is an interior view of the cover plate showing the auxiliary distributor block and Figure 4 is a diagram of the distributing circuits.

Now referring to the several figures in detail 1 represents the base of a magneto in which is mounted a rotor 2 adapted in its rotation to cause the magnetic fiux generated by magnets 3 to flow through a core 4 to generate a current in an induction coil encircling the core. The current from the coil is led through a spring pressed contact 46 and an insert ina connector 6 to a spring pressed brush 19and thence to distributing mechanism forming the subject matter of my present invention. Keyed to the rotor is a gear wheel 7 meshing with a second and larger gear wheel 8, the hub 9 of which rotates in a bronze bearing 10 suitably secured in an end plate 11 of the magneto. Secured to the gear wheel 8 by means of screws 12 is an insulating block 13 made of bakelite, americanite or the like in which is embedded a distributing finger 14 having two terminal ends, one end 15 extending radially of the block and the other end 16 being bent at right angles to the first portion and extending in a direction parallel to the rotative axis of the block. Electrically connected with the insert 14 is a pair of electrodes 52 suitably spaced from the grounded screws 12 so as to form a safety spark gap therewith. Riveted to the finger 14 is a stud 17 extending into a bore 18 in the insulating material and making contact y with the spring pressed brush 19 inserted in a projecting end of the connector 6.

Cooperating with the end 15 of the dis tributer finger is an annular distributor block 20 of insulating material secured to the end plate of the magnetol by suitable screws 21, said block having embedded in the annular wall thereof spaced segments 22 so positioned that in the rotation of the distributor finger, the end 15 will be in turn opposed to each of them s o as to form a jumpfspark gap as is clearly shown in Fig. 2.` The segments 22 are connected through suitable terminals 23 and by means of cables 44 partially lying in channels 24 in the block 20 to the cylinder spark plugs of an internal combustion engine.

Mounted on a cover plate 25 suitably retained on the end plate or" the magneto as by spring clips 26 is a second distributor block 27 of insulating material, held therein by means of screwsl 28- passing through the block and tapped into the cover plate. Within the block 27 there is a Maltese-cross spider 29, bent as is clearly shown in Fig. l, the terminal ends 30 being positioned to be each in turn opposite to the terminal end 16 of the distributor finger as the latter rotates, to form a jump-spark gap therewith as is clearly shown in F ig. 1. The terminal ends 30 are preferably equal in number to the segments 22 and are preferably spaced midway between them. The hub of the spider is provided with a terminal screw 31 to which is adapted to be secured as by a thumb nut 32, a cable 45 leading to the fuelizer spark plug. Also embedded in the block 27 is a spring ipressed thrust button 33 for the purpose o restraining the distributor linger block 13 and 'its gear wheel 8 against lateral vibrational movement in the bearing 10. The block is corrugated as is shown at 47 to increase the hazard against surface leakage from the terminal ends 30 to the cover plate. To cause' an effective high tension current to be induced in the secondary coil, the primary circuit of the induction coil is opened at appropriate times by means of a cam 34 secured to the rotor engaging a bumper 35 on a pivoted arm 36 carrying a contact 37, adapted to cooperate with a stationary contact 38, the pivoted arm with its bumper and contact and the stationary contact being mounted on an annular base 39 adjustably rotatable about .a hub 40 doweled into the end plate. The contact points are shielded against dust and dirt and against lubricating oil by means of an arcuate shield 48 secured to the stationary contact member under the lock nut 49, said shield having ears 50, only one of which is shown embracing the stationary contact supportl 51. The magneto illustrated is one capable of producing 4 sparks per revolution of the rotor shaft, said shaft being geared in a o'ne to one ratio with the engine crank shaft. The primary circuit is opened each time that the distributor finger is opposite either a segment or a terminal end so as to induce an effective secondary current. in the coil, and since as illustrated there are but four lobes to the cam corresponding to the four sparks capable of being produced by the magneto in one revolution of the rotor shaft, while there are in all eight terminal ends and segments, the gear wheels 8 and 7, the former of which carries the distributor lin er,are geared in a two to one ratio, so t at the cam makes two revolutions for one revolution of the distributor finger, thereby opening the circuit eight times and producing eight sparks in the secondary circult for each one revolution of the finger. A lever 41 having an end 42 engaging a slotl 43 in the breaker base 39 is provided to rotate the base around the hub 40 to thereby carry with it the bumper so that the time of break of the circuit may be varied with respect to the angular position of the rotor to vary the time of ignition inthe engine cylinders when desired, as will be readily understood by those skilled in the art.

It is to be understood that although I have chosen to illustrate the invention as applied to a distributor mechanism capable of furnishing five sparks, that the number of segments and terminal ends on the distributor blocks may be varied to produce any other number of sparks, with thek proper choice of cam and gear ratio.

Furthermore although I have chosen to illustrate and describe the terminal ends as being electrically joined, it is apparent that each terminal end may be furnished with a cable connecting means so that the magneto is capable of ring an eight cylinder internal combustion engine, and the number of terminal ends and segments on both blocks may be varied to fire any` number of cylinders, witha proper choice of cam and gear ratio. l

Having thus described my invention what I claim is:

1. In an ignition system a distributing mechanism comprising a distributor block having segments for connection with the spark plugs of an internal combustion engine, a second distributor block having a terminal end for connection with a spark plug'and a distributor finger to regularly lll!) distribute ignition current to said segments and terminal end.

2. In an ignition system a distributing .mechanism comprising a distriutor block having segments for connection withY the spark plugs of an internal combustion engine, a second distributor block having terminal ends alternating with the segments for connection with a spark plug, and a distributor finger to regularly distribute current alternately to' said segments and terminal ends.

3. In an ignition system a distributing mechanism comprising a distributor block having equally spaced apart segments for connection with the s ark plugs of an internal combustion engine, a second distributor block having terminal ends equally spaced apart alternating with the segments and disposed substantially midway therebetween for connection with a spark plug, and 'a distributor nger to regularly distribute current alternately to said segments and terminaL ends.

4. A distributing mechanism for use-in a system, of the class described'comprising a distributor` block having a circular recess; segments embedded in the annular Wall of .said recess,va second distributor block.sup

ported adjacent the first block and having a plurality of electrically connected terminal ends and a distributing finger revoluble -ends supported adjacent to said first block,

the terminal ends-extending toward said recess, and a distributing linger. having a radial portion for transmitting current to the segments and another portion at right -angles to the iirst portion for regularly distributing ignition current to the terminal ends alternately with said segments.

6. In an ignition system an ignition de,- vice, comprising an end plate, a distributer block secured thereto, a second distributor bloclr supported adjacent the first block and a distributor linger operated by the ignition device to regularly distribute current to both -of said distributor-blocks. Y

y 7. In an ignitionl Asystem an ignition ydevice, comprising an end plate,a distributer block secured thereto, a cover plate for the end plate, a second distributer block, secured therein, supported. adjacent the first block and a distrlbuter finger operated by the ignition device to regularly distribute .ignition current alternately to both of said distributer blocks.

f8. In anignition system an ignition device,lcomprising an end plate, a distributer block secured thereto, a second distributer block supported adjacent the first block and a distributer'inger bperated by the ignition device to distribute i ition c'urrent to both of said 'distributor locks alternately and means for enclosing both distributor blocks.

9. In an ignition system a magneto corn-v prising an end plate, a distributer block having an annular recess secured thereto,

segments inthe annular wall of said recess, a cover plate for the end plate, a second distributer block secured therein coaxially arrangedv with the first distributer block and.v having terminal ends,'a bearing in said end plate, a gear wheel journaled in saidbearing carrying a distributer finger, said finger rotating in the annular recess of the first dis. tributer block and having means to transmit current in time to each of said segments and terminal ends and lmeans to generate anv efective current only when the distributer finger -is opposed to the segments and terminal ends.

In testimony WhereoffI aiiixvmy, signature.

EDWARD B. NOWOSIELSKI.

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