US902783A - Ignition system for explosion-engines. - Google Patents

Description

R. VARLEY.

IGNITION SYSTEM FOR EXPLOSION ENGINES.

APPLIUATION FILED OCT. -1, 1906.

Patented Nov. 3, 1908.

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IGNITION SYSTEM FOR EXPLOSION ENGINES.

APPLICATION FILED OUT. 1, 1906.

902,783. Patented Nov. 3, 1908.

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APPLICATION FILED OCT. 1, 1906.

902,783,. Patented Nov. 3, 1908.

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i/ @0000 v EI-muowiio'm 5mm CH'lozneqj a Ma j 4/ RICHARD VARLEY, F ENGLEWOOD, NEW JERSEY, ASSIGNOR TO THE AUTOCOIL COMPANY,

A CORPORATION OF NEW JERSEY;

IGNITION SYSTEM FOR EXPLOSIONENfG-INES.

Specification of Letters Patent.

Patented Nov. 3,. 1908..

Application filed October 1, 1906.: SeriaLINo. 336,869.:

.glewood, in the county of Ber en and State of New Jersey, have invente certain new and useful Improvements in Ignition Systerns for EXplosion-Engines, of which the following is a full, clear, and exact description.

My invention relates to an ignition system for explosion engines,- and pertains .to several features of improvement in a combined timer and distributor of the general type employed in connection-with a single in duction coil for discharging it successively in the different cylinders. I

' One of-the principal objects of the-invention is to provide a timer and distributor of the above character which is capable of use when a dynamo furnishes the primary current, and when a battery furnishes the primary current, without readjustment, or any other manipulation than switching into circuit the required source.

A further object of the invention is to provide a single-meansprojectingfrom the casing for adjusting the primary current dura tion or dwell, to'suit any special conditions; or to compensate for wear of the parts. This adjustment is furthermore secured simultaneously for both dynamo or battery ignition, so that when made for either the adjustment, the time, relation, or any factor-,-,

will not be impaired .by the substitution of the other.

Additional objects are to rovide a distributing switch or flier whic is-readily removable whenever desired, and which isinsured against being improperly re laced when the parts are re-assembled; a so to make use of-a single vibrating leverfor securing all the above functions, and toobtain an adjustment of the primary dwell by simply moving the primary circuit breaking lever with relation to its 0 crating cam.

With these and other objects in view the invention consists in the features of construction hereinafter-set forth and claimed,

- In the drawings: Figure "1 is a sectional view of a timer and d1stributer embodying the rinciples of m invention. This section is taken on the ine II of Fi 2. Fig. 2 is a longitudinal sectional view 0 the same. Fig. 3 is a top or Ian view. Fig. 4 is a sec-- tion on the llne Ii 7IV of Fig.2. Fig. 5 is a diagrammatic-view showing an -arrange-. ment of circuits which may lie-employed.

In operating. motor cars there are three factors-in the matterofthe electric ignition which. require attention on the art'ofthedriver; The first is, ofcourse, t e relation- 9f the -spark(orthe firstspark of the cascade- 1f a vibrator induction coil is used) to the engine strokex This is constantly being variedby the usual timing lever onthnsteeringwheels The second matter: which-requiresattention is the duration or dwell ofthe -primary current. This is apt to become variedin use by wear.- Accordmgly it is important to have means by which this is accomplished. Lastly; itis-usual to. have two independent sources of p'rimarycurrent, and these are fre-v quently su stituted forone another. A battery-and-a magneto ordynamo are exam les of alternative primary current sources often used. It isdesirable that the shifting from one-current source to another does not necessitate any re-positioning ofthe first two named adjustments. vention- I secure all these requisites, so that the driver may shift from one current source to another as often as he pleases without impairinglany ofthe adjustments, and may vary t e dwell for the primary current Without interfering at all with the throw of movement of the timing lever on the. steering wheel. 7

Referring to the drawings in which like In carrying out my in-' parts are designated by the same reference sign, 1 indicates a frame or casing, preferably jeot upwardlythe studs 12. These studs-are I unsymmetrical with respect to one another 'm an way, as, for example, by having one stud at or than the others.

Positioned on the flat ace .11 of the shaft is an insulating block 13, the upper part of which is chambered or hollowed out as shown at 14, and

- ber or insulatin material, having embedded therein or attac ed thereto, a plurality of in-' ternal metallic segments 17. .These seg-' ments lie in the ath of rotation of the spring blade 15 above escribed, and constitute the terminals for connection to the various spark lu 1% indicates a thin metallic rim depending from the upper casing 16 to which it 1s firmly secured, and serving to guide the upper casing in proper concentric relation to the lower casing 1. U

' 19 indicates screws for holding the parts 1n connected relation. 4

The to 20 of the upper casing 16 has a c lindrica guiding piece 21, in which is a p unger 22. 23 indicates a spring for normally impelling this plunger downward, and the plunger thereby serves to keep the insulating block 13 firmly set u on the face -11 of the half-time shaft," This p unger also serves as a'terminal connection for the switch blade.

of the practical construction which I employ are particularly shown in Fig. 1. I

26 denotes a rimary c1rcuit breaking lever or vibrator plvoted at 27 upon the easing 1, and having an arm 26 spring impelled by spring 28 to move the lever 26 toward the cam 9.

' 29 denotes a roller on the lever 26 to engage said cam. The outer end of the lever .26 plays between two contact points which may be of platinum compound if desired. One of the contact. oints 30 forms part of a sliding bar'31 guide on the stationary metallic base 32 in any suitable way. The base 32 is fixed to the casing 1, but insulated therefrom by an insulating plate or block 33. Means are provided for adjusting the bar 31 slidably on the base 32, so that the position of the contact point 30 is varied with respect to the lever 26. This is accomplished by a thumb wheel 34, having a stem screwthreaded at 35 into the base 32. This stem has collars 36 which hold the bar 31 between them so that when the thumb wheel 34 is turned, it is moved in and out, and varies Means are rovided for keeping the the position of the bar 31', and the contact point 30.

3-7 denotes a fluted part of the stem 35 which is engaged b a spring impelled plunger or detent 38 to old the parts in any adustment to which the may be set.

The bar 31 hasfixed thereto an insulating plug 39, and a spring blade 40 is normally tensloned to bear against this plug. The blade 40 is for this purpose mounted on a base 41, which is insulated from the casing by the plate 42. v The blade 40 also has a contact 43, in the path of the vibrating lever 26, this contact being engaged at the opposite position of throw from the contact 30. The contact 30 is connected to the potential terminal of a dynamo or magneto machine, and the other contact 43 is put in connection with the potential terminal of a battery. These connections are made b ordinary wires leading to the base 32 and t e base 41, as will be sufficiently obvious. The other terminals of the battery or dynamo are, of course, rounded in the usual way on the frame or the machine.

The operation is as follows: As the half time shaft 8 rotates its cam 9 impinges against the roller 29 and se arates the lever 26 from the contact 30. T 's abruptly terminates the primary current of the dynamo or magneto, sugposing the circuit thereof is otherwise close and a disruptive discharge is produced in the secondary of the induction cell in the usual way. At'almost the same instant the lever 26 moves over into contact with the contact point 43, establishing the battery current, supposin that its c1rcuit is otherwise completed. he batte therefore o crates its induction coil whic has a tremb er, and produces a cascade discharge. Thus the spark of the dynamo ignition and the first spark of the battery cascade ignition occur about the same time, as is required. If the duration of the batte cascade is not suflicient, it may he lengt ened by turning the thumb wheel 34, so as to move the bar 31 upward in Fig. 1. This results in a longer contact between lever 26 and contact point 43, so that .the primary circuit of the battery is closed for 'a longer time. But this movement of contact point 43 is accompanied by a corresponding movement of point 30, so that the relation of dynamo ignition and battery ignition which is required, and as above indicated, is not disturbed by such adjustment. In other words, the timing of the explosions in cylinders remains substantially simultaneous for battery and dynamo, notwithstanding the movements of the thumb wheel 34. I regard this as a very important feature of the invention, since the driver has merely to turn the thumb wheel 34 until the right result is secured with his battery ignition, and then leave the mechanism alone. Otherwise it would be contact point 43.

necessary after having secured the proper battery ignition, to manipulate other adjustments to compensate for the disturbance in the timing of the dynamo ignition. In practice, the adjustment-of the thumb wheel 34 should only be made occasionally to compensate for wear.

A diagrammatic representation of the circuits is shown in Fig. 5. B is the battery grounded at G, and including the primary N of an induction coil, and connected to D is a dynamo or magneto machine (which I shall term generally a dynamo in the claims), grounded at G, and including the primary N of an induction coil, and finally connected to the contact point 30. The secondaries S and S each have one terminal grounded and the other terminal run to the spring blade or flier 15. The variousspark plugs P, P, P and P are connected to the segments 17. A plurality of switches Y are included in the primary and the secondary circuits so that either the dynamo or the battery can be used as desired. In practice I provide a single switch for connecting either the battery or the dynamo as desired, and it is to be understood that any suitable or desired switching means may be employed.

A feature of the invention relates to means for preventing cree )age currents within the upper casing 16. he potential of the secondary discharge is, of course, very high, and loss may occur b reason of the current creeping to groun over intervening insulators. This creepage is due to a thin filmof moisture which gathers on all objects in humid weather. The effect is of course reduced by increasing the surface over which the current may creep.

In Fig. 4 I have illustrated a method of increasing the surface by the corrugations 45,

-which are produced by vertically fluting the material of the block 16 between the seg ments 17. The effect of these flutings is to substantially double the amount of surface over which the creepage currents must pass. The outer surface is also circumferentially fluted at 46'for the same purpose.

What I claim, is I 1. In an ignition system for explosion engines, a dynamo circuit, a battery circuit, a vibrator, contacts in the path of said vibrator for closing said dynamo circuit or said battery circuit by movements of the vibrator.

in opposite directions, and means for simultaneously adjusting said contacts with res act to the vibrator but Without changing tlieir relation to one another.

2. In an ignition system for explosion ongines, a vibrator, a pair of contact points respectively engaged y said vibrator in its to and fro movement and simultaneously adjustable while maintained at a fixed distance of separation from one another.

3.. In an ignition system for explosion engines, a cam, a vibrator engaged thereby, a contact adjustable into the path of said vibrator and included in one prima circuit, and a spring blade su ported a fixer distance from said contact an also in the path of said vibrator, said spring blade lying in a separate primary circuit. 1 v a 4. In an ignition system for explosion engines, a cam, a vibrator engaged thereby, and a pair of contacts in the path of said vibrator in its to and fro movement, and means for.

simultaneously adjusting said contacts with respect thereto.

5. In an ignition system for explosion engines, two separate primary circuits, means for breaking said circuits, a casing for inclosing said means, and a stem extending through the wall of the casing and arranged to adjust the primary dwell for both of said circuits.

6. In an ignition system for explosion engines, a pair of separate primary circuits, a single means for interrupting said circuits, a casing, and means pro ecting through said casing for simultaneously adjusting the dwell for both said primary circuits;

7. In an ignition system for explosion engines, a primary, circuit including a dynamo, a second primary circuit including a battery, means for interrupting said circuits, a casing, and means projecting through the casing for varying the dwell of said battery primary circuit without disturbing the relative time of adjustment of said dynamo primary circuit with respect to the engine stroke.

8. In an ignition system for explosion engines, a plurality of separate primary circuits, means for interrupting said circuits, a casing, and a single thumb Wheel projecting through said casing for adjusting the duration of the interruption of both of said primary circuits.

9. In an ignition system for explosion engines, a shell or casing of insulating material, and a plurality of metallic segments internally positioned thereon, the internal walls of said shell'or casing being corrugated between the segments, as and for the purpose set forth.

10. In an ignition system for explosion engines, a half-time shaft having a disk or circular plate thereon, said plate having a cam integral with the lower face thereof and extending downward, and said plate also having a pin projecting upward from the upper. face thereof, means in the path of said cam for interrupting a circuit, and means on said disk and pin for establishing different circuits in a predetermined order.

In witness whereof, I subscribe my signature, in the presence of two'witnesses.

RICHARD VARLEY; Witnesses:

FRANK S. OBER, WALDO .M. OHAPIN.

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