US1402387A - Ignition device for internal-combustion engines - Google Patents

Description

' H. R. VAN DEVENT IGNITION DEVICE FOR INIERN N ENGINES.

APPLICATION FILED 1,402,387. Pawn an. 3,1922.

SHEET I.

l vummtoz WW AM H. R. VAN DEVENTER.

IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED OCT. I3, I917.

1,402,387, I Patented Jan. 3 922,

I 'v I l l g. I

I I I avwcntox HARRY neivnonrn VAN nnvnnrnn, orsnra'rnn, sorrrn 'GAROLIN company, or NEWARK, NEW JERS Y,

srmrnonn nnnc'rniceic on new JERSEY. r

A, essrclxron. To A CORPORATION G N DEVICE NT RN L-C M USTION ENGINES.

i-eeasea.

ing is a specification, reference, being bad to, the accompanying drawing. v

The invention relates to new and useful improvements in-ignition devices and more particularly to ignition device having a fixed and a movable electrode to which current is supplied by a magneto generator.

An object of the invention is to provide an ignition device of the above character which includes. independent supporting brackets, one of which carries the electrodes and the other the magneto generator, and to provide means for positioning said brackets relative to each other so as to maintain proper synchronism in the movements of the current generating member'ofthe magneto generator and the movable electrode, and also so as to ensure proper synchronism between these parts when the brackets are replaced after having been removed for any purpose.

' In the drawings,

Fig. 1 is a side view of the ignitiondevice withthe generator in place;

' Fig. 2 is a front view of theignitio'n device, the generator being removed to show the actuating mechanism;

Fig. 3 is a top plan view of the two parts of the bracket assembled.

, The invention consists broadly in the supporting means for the electrodes and the movable generator. In the present embodlment of the invention, I have provided two supporting brackets which are independent .so that when the brackets are attached to Specificationiof Letters Patent.

electrode 0.

Patented Jan. 3.19 22.

' 1 Application filed octet is, 1917. Serial No. 196,373.

the engine cylinder they will be held in fixed relation to each other by: these interengagmg parts cooperating with the means wh ch secures the brackets to the engine cylinder. This prevents either bracket from becoming loose on its supporting means and shift ng so as to throw the current generatlng member and the movable electrodes out of synchronism. I

It, is understood, of course, that in this type of ignition device the time interval at whlch the current rises to a maximum peak s very short and in order to produce an efficient spark, the movable electrode must be moved to separate the electrodes for producingthe spark within this short interval of time when the current generated by the magneto is at a maximum. After the parts have been properly adjusted, so. as to bring about a synchronism in the movements of the current generating member and the movable electrode to secure maximum spark, these interengaging parts between the brackets will prevent any shiftmg of one bracket relative to the'other, and, therefore, maintain the synchronism and the maximum spark.

Furthermore, the brackets at times must be removed to permit the cleaning of the electrodes and when they are. replaced the interengaging parts ensure that the brackets shall be put back in exactly the same relation to each other as they were when the parts were adjusted for a maximum spark, and, therefore, said brackets may be removed and replaced without disturbing the synchronism of the moving parts referred to and without disturbing thismaximum current generation. and the spark produced thereby.

. The invention will be better understood by a brief reference to the drawings in detail wherein my improved ignition device is shown as embodying two supporting brackets indicated at 1 and 2 in the drawings. The bracket 2 is provided with a sleeve 3, which projects into an opening in the cylinder wall and mounted in this sleeve is a fixed electrode i and a movable Said electrodes are provided with the usual ignition points 6 and 7 respectively, which are normally in contact and which are separated for the purpose of producing the'ignition spark. The movable outer end.

electrode is provided with an arm 8 at its A spring 9 bearing at one end against the said arm and at its other end against an abutment 10, serves to hold the ignition points in contact. The bracket -2 is clamped to the cylinder wall by a stud bolt 11, on which is the usual threaded t .12 i i V g The bracket 1 is located at one side of the bracket 2 and as a means for positioning said brackets relative to each other and holding them in this predetermined position, I have provided interengaging fitted parts. The adjacent faces 12 and 13 of the brackets are milled so as to fit snugly together.

The bracket part 1' is provided with recesses 14c adapted to receive lugs 15 carried by the bracket 2] These lugs and recesses form the interengaging parts referred to above and serve as a means together with the milled faces 12 and 13 for exactly positioning one bracket relative to the other and holding said brackets in this predetermined position. The bracket 1 is held against thecylinder wall by stud bolts 16 and 17, on which are threaded nuts 18.

From the above, it will be readil seen that the two brackets may be readily removed from the engine for the purpose of cleaning the electrodes and when so removed the two brackets are entirely separate from each other and the bracket 2 carrying the electrodes may be completely immersed in 'gasolineor the like forcleaning the electrodes. After the electrodes have been cleaned, the brackets may be again placed on the engine cylinder and these interengaging parts will exactly reposition the brackets, ,just as they were before removal from the engine, so that when once the parts are in proper synchronism, that is, the movable "electrode is operated just at the right time interval to correspond tov the maximuni current generation, this synchronism of the parts will always be maintained.

Furthermore, by these interengaging parts the two'brackets may be assembled when detached from the engine and they willposition said brackets in exactly the position they will have on the engine and they may be held in this position by hand and the generator operated to see whether or not proper spark is produced, and this operation of the generator and the movable electrode will be under as near normal conditions as can be obtained.

The bracket 1 is provided with a shelf 19 on which is mounted the magneto generator G. Bolts 20 pass up through the shelf and are threaded into the base of the generator. On the shelf carrying the generator is an upwardly extending standard 21. The trip .lever 22 is supported by a shaft fixed to'the standard 21. Said trip lever is provided with a cam projection 22 adapted to strike hanging arm 25 mounted onthe supporting bracket 1. A spring 26 engages aroller on the pin 24: and also a'roller on the pin 27,

carried by a lug 28 .on the shelf 19 and'extending downwardly. therefrom. V

A push finger 29 is adapted to engage the shoulder on the trip lever and movethe same to a predetermined point where it is released, so that the'springs may return the trip lever,causing the same, to actuate the movable electrode, and also thearmature or current-generating member ofv the magneto generator. A generator armature is pro- 'means for operating the armature, it will be understood that these parts may be greatly varied, as the essential feature of the invention consists in the two supporting brack ets, one of which carries the electrodes and the other of which carries the magneto generator. which brackets'when detached from the engine cylinder are entirely. separate from each other, so that the bracket carrying the movable eletrodes may be immersed in gasoline or the like for cleaning,'as above noted, and when the parts are re-assembled, the interengaging featuresv of the brackets bring about the same position of the brack ets relative to each other as before they were removed from the engine cylinder thus ensuring that the movements of the armature and the movements of the movable electrode, will always be in proper synchronism after once these parts have been adjusted.

These interengaging parts also, as above which the bolts pass for securing the brackets to the engine cylinder wear so that the brackets might otherwise shift on the bolts. If there is any shifting of'one bracket, it will be imparted likewise to the other, so that both brackets will, as stated, he properlv held in fixed relation to each other.

lVhile I have shown separate means for securing the brackets to the engine cylinder, it is understood, ofcourse, that the construction of the brackets and the arrangement of the brackets relative to each other and the securing means therefor, may be greatly modified solong as the means for maintaining the position of the brackets relative to each other is utilized,.asthis is the broad feature of my invention.

Having thus described my invention,

- vided with a forked arm 30, adaptedto enmoans? What I claim as new and desire to secure by LettersPatent, is

1. An ignition device including in combination, a supporting bracket, a fixed and a movable electrode carried thereby, a second supporting bracket, a magneto generator mounted onsaid second bracket, a trip lever and actuating springs for oscillating the armature of the generator carried by said second bracket, ,means for securing said brackets to the engine cylinder, and means for holding the brackets in a fixed position relative to each other.

2. An ignition device including in combination, a supporting bracket, fixed and movable electrodes 7 carried thereby, a second supporting bracket, means for securing said brackets to the engine cylinder, means for holding the brackets in fixed position relative to each other, said second supporting bracket having a supporting shelf for a magneto generator, a magneto generator carried thereby, a standard carried by said shelf, a trip lever supported by said standard and adapted to oscillate said armature, a lug carried by said shelf, an overhanging arm carried by said second bracket, and springs connected'respectively to the trip lever and to the lug and overhanging arm for actuating the trip lever.

In testimony whereof I hereunto affix my signature.

HARRY RANDOLPH VAN DEVENTER.

Images