US1293467A - System of selective electrical distribution. - Google Patents

Description

C. F. KETTERING & W. A. CHRYST.

. SYSTEM OF SELECTIVE ELECTRICAL DISTRIBUTION.

APPLICATION FILED MAR. 6. I916.

1,293,467. Patented Feb. 4, 1919.

2 SHEETSSHEEI I.

I W "I I C. F. KETTERING & W. A. CHRYST. SYSTEM OF SELECTIVE ELECTRICAL DISTRIBUTION.

APPLICATION FILED MAR. 5. 1916. 1,293,467. Patented Feb. 4, 1919.

2 SHEETSSHEE[ 2.

' our co-pending CHARLES FfKETTERIN G AND WILLIAM A. THE DAYTON ENGINEERING LABORATOR CHRYST, OF DAYTON, OHIO, ASSIGNORS TO IES COMPANY, A CORPORATION OF OHIO.

SYSTEM OF SELECTIVE ELECTRICAL DISTRIBUTION.

Specification of Letters Patent.

Patented Feb. 4, 1919.

Original application filed November 20, 1912, Serial N 0. 732,483. Divided and this application filed March 6, 1916. Serial No. 82,416.

To all whom it may concern:

Be it known that we, CHARLES F. KETT R- ING and WILLIAM A. CHRYsr, citizens of the United States of America, residing at Dayton, county of Montgomery, and State of Ohio, have invented certain new and useful Improvements in Systems of Selective Electrical Distribution, of which the following is a full, clear, and exact description.

This invention relates to improvements in electrical systems, and especially to that type of systems employed in conjunction with combustion engines for furnishing ignition thereto, and for various other purposes.

Among the objects of the present invention is to provide a plurality of electrical sources and circuits having controlling elements operable to accomplish certain predetermined functions as regard to the above mentioned electric sources and circuits.

The present application is a division of application, Serial No. 732,483, filed November 20, 1912.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein preferred forms of the present invention are clearly illustrated.

In the accompanying drawings:

Figure 1 is a diagrammatic view of the electric circuits and connections embodied in the present invention.

Fig. 2 is a perspective view of the switch unit included in the embodiment of the in-,

vention disclosed in diagrammatic Fig. 1.

, Fig. 3 is a view m rear elevation of the switch unit with the outer casing removed to more clearly illustrate the supporting plate and detent.

Fig. 4 is a detail view of the common contact plate employed in the present embodiment of the invention.

Fig. 5 is a view in elevation of the switch assembled, with a portion of the switch casing being broken away, so as to clearly show the operation and construction of certain of the push button or controlling elements, and their relation to the latching detent, when in operative and inoperative positions.- It will be understood, of course, in this view that certain of the elements have been omitted for the sake of clearness.

Referring to the drawings, and more parimpulse is secured for each explosion of the engine, by having a main circuit intermittently opened and closed by the operation of the engine actuated timer cam. That is, each time the main circuit is made and broken by the timer cam, a sparking impulse is inducted into the secondary circuits -in the usual manner.

However, as has been explained heretofore, it is always desirable to have some means for securing a vibrating spark efi'ect, under certain conditions, such as for instance, when starting the engine or at such times as the ordinary single spark ignition, of either the battery or magneto type. does not efliciently meet the requirements.

In the present instance, the induction coil is so constructed and arranged that it will,

upon certain circuit connections being made, give the vibrating coil effect.

However, in the present instance, the system has been so designed that the vibrating spark efiect can only be secured at such times as the engine actuated timer cam is off contact, that is, at such times as the contacts of the timer are in position to open the main circuit.

The present system also embodies the idea of introducing a resistance unit in the main. circuit, which will prevent a needless flow of current, in the event that the circuit-remains closed for an extended period, as would be the case where the timer contacts remain in circuit closing position, brought to a stop.

The above described invention is included in the co-pending application of C. F. Kettering, Serial No. 643,547, filed August 11, 1911. a

Again, the present system provides a condenser which is connected directly across the when the engine is timer contacts and which also 1s connected across the contacts which are normally ineluded within the vibrating coil circuit. It has been found that if the condenser circuit were compelled to pass current through the resistance unit, the efiiciency of the condenser would be greatly reduced, therefore, this circuit is shunted around the resistance unit.

Referring to Fig. 1, the numeral 20 indicates a battery of any suitable type, one pole of which is connected by means of the wire 21 to the contact plate 22, which in turn is adapted to be forced into contact with the common contact element 23, by means of the operation of the button 24. When this button 24 has been operated to close the battery circuit, the current will pass through the following course: from the battery 20, through wire 21, independent contact arm 22, one of the arms 25 of the common contact elements 23, wire 26, resistance unit 27, which is preferably constructed of iron wire, or in fact, of any material wherein the resistance thereof increases as its temperature rises, thence to the timer 28, via .the wire 29, which is common to both the magneto or generator and battery circuits. From the timer, the current passes through the Wire 30, coil 31, which is wound about the core 32, and which performs the function of the primary winding of an induction coil, and also serves to so energize the core element 32, as to attract the contact carrying armature 33, which, as will appear hereinafter,

vmakes it POSSlblB to secure the vibrating spark effect, under .certain conditions. From this coil, the current passes through the wires 34 and 35, to the opposite side of the battery 20.

When the magneto type of ignition is to be brought into'efiect, the button 36 is depressed to close the contact s37 and 38, so

that current from the magnetoor dynamo electric machine 39, or storage battery 40,

- as the case may be, passes through the wire 41, contact 37 and 38, wire 26, resistanceunit 27, wire 29, acrossthe timer 28, wire 30, coil 31, back to the opposite side of the generator, Via

the wires 34- and 42.

Now, when it is desirable to secure the vibrating spark effect, thebutton 43 is depressed 0 close the contacts 44 and 45, and when the structure shown in dotted lines in Fi 2 is employed, the depression of the button 43 will also depress the button 24,

thus ,closing the contacts 22 and 25, by the operation of the button 43.

This arrangement, of course, can be eliminated and the buttons 43 and 24 operated independently of each other to secure the same efiect. It will, of course, appear that other means for securing the closing of the necessary circuits may be secured by a different arrangement of certain of the contact and circuit connections.

However, when the construction 1S similar from the battery 20, through and also tends to depress operation of the to that shown in Fig. 2, the current will flow wires 35 and 34, to the coil 31, through the armature 33, contact element 46, wire 47, through the contact elements 44 and 45, through the common contact plate 25, and plate 22, back to the battery, via wire 21.

Now, as soon as the core 32 becomes sufficiently energized by current passing through the winding 31, the armature 33 will be attracted toward the core, thus breaking the contact between the armature 33 and the plate 46, which will, of course, produce a sparking impulse in the proper secondary circuit. As soon as the current is broken in this circuit, of course, the spring 48 will retract the armature 'into contact with the plate 46, and a similar action to that just described, will again take place. This intermittent opening and closing of the circuit will be continuous until such a time as the timer element'28 is moved so as to close the main circuit, or until the buttons 43 and 24-have been released.

When the form of switch shown in Fig. 2 is used, it will 'be understood that the operation of the button 43 not only tends to close contacts 44 and 45, but due to the plate extensions shown in dotted lines in Fig. 2, tends to close ' contacts 22 and 25 by depressing the button 24. This completes the circuit for the vibrating spark type of ignitlon.

The construction'of the button 24 is such that When it is depressed it will be latched in contact making position due to the eflect of the latching. detent 70. The construction ofthe button 43, however, is such that no latching effect will take place upon the depression thereof, inasmuch as the detent is ineffective relative to this button.

The above construction of the various buttons is clearly set forth and claimed in our co-pending application, Serial No. 732,483, filed November 20', 1912, which eventuated into U. S. Patent No. 1,211,378, and it is not deemed necessary to give a detail description and showing of this construction in the present application.

When the operator depresses button 43, this tends to close the contacts 44 and 45.

the button 24 closing contacts 22 and 25. Now, as soon as the operator releases the button 43, it will immediately return to normal position and thereby allow the contacts 44 and 45 to assume their normally supported positions. However, the button 24 will remain in depressed position. thus closing thecircuit for tlie single spark type of ignition, which is a desirable type of ignition to be used during the engine.

The condenser 49 is connected directly across the contact points 50'and 51 of the timer element 28, and it will be seen that a condenser circuit is created between the armature 33 and the plate 46, one side of which may be describedas being from the armature 33, through the wire 30, through wire 52, to one side of the condenser. The other side of this circuit consists of the plate 46, wire 47, plate 44, button 43, ground connections 53 and 54, wire wire 29, to the other side of the condenser, via wire 56.

The ground connections 53 and Fiji, which are respectively connected to the button 43 and the Wire 55, will be seen to form a shunt around the resistance element 27, so that the efficiency of the condenser may be maintained.

The mechanical construction of a preferable form of switch to be employed in the present system, is clearly shown in Figs. 2 and 7, and comprises a number of elements which are similar in construction to certain elements described, claimed and shown in our co-pending application, which eventu- -ated into the aforementioned U. S. Patent Referring to Fig. 3, there is shown a com mon contact element 23, which is mounted on but insulated from the supporting plate 57 by means of an insulating plate 58. In the present form of the invention the latching and locking elements arecombined in a single unit; that is, the releasing button which controls the latching detent 70, has provisions whereby the locking of the switch may be readily effected. The releasing pin 59 has a shank portion 60 provided with an annular groove 61, within which is normally positioned a spring pressed plunger element 62. annular groove and is of greater depth than the depth of said groove and normally is arranged to lie directly in alinement with the plunger 62, so that while the button may be depressed or pushed in, by exerting pressure against the button 59, it will be impossible to turn said button on its axis, without first inserting the key element 64, which upon being inserted within the opening formed in the center of the button element, will depress the plunger element 62, to such an extent thatit will be possible to turn the entire button or controlling element 59, in

order to effect, first, a release of all buttons which are in depressed position, and second, to lock or prevent from operation, any of these buttons until the controlling element is returned to its normal or open position.

IVhile the form of mechanism herein shown and described, constitutes a preferred form of embodiment of the invention, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What we claim is as follows:

1. In an ignition system, the combination A cut-away portion 63 leads from said.

with a battery having circuit connections including timing mechanism; a main switch for closing the battery circuit to secure single spark ignition; an auxiliary switch for controlling the circuit connections for giving vibrating spark ignition, said auxiliary switch having provisions for actuating the main switch when the auxiliary switch is operated; and means for latching the main switch in circuit closing position when actuated by said auxiliary switch.

3. In an ignition system, the combination with a battery having circuit connections including timing mechanism; of a main 90 switch for closing the battery circuit to secure single spark ignition; an auxiliary switch for controlling the circuit connections for giving vibrating spark ignition, said auxiliary switch having provisions for actuating the main switch; and means effective to latch the main switch in circuit closing position but ineffective to latch the auxiliary switch in circuit closing position.

4:. In a system for supplying combustion and explosion engines with ignition, the combination with battery and magneto systems, comprising circuit connections and timing mechanism; a battery circuit including a circuit interrupter independent of the timing mechanism; a magneto circuit including the timing mechanism and having a resistance unit embodied therein; and a condenser connected across the contacts of the circuit'interrupter in the battery circuit, and in shunt relative to said resistance unit.

5. In a system for supplying combustion and explosion engines with ignition, the combination with a plurality of ignition systems; means for controlling one of said ignition systems to secure a determined type of ignition; and means operable only subsequent to the actuation of the above mentioned means to bring into effect a different circuit in shunt, relative 'to the timing mechanism, to secure vibrating spark ignition.

7. In a system for supplying combustion and explosion engines with ignition, the combination with a battery ignition system, including circuit connections and timing mechanism; means for closing one of the circuit connections through the timing mechanism to secure single spark ignition; and means operable subsequently to the operation of the above mentioned means to close additional circuit connections, whereby vibrating spark ignition may be secured at such times as the timing mechanism maintains the first mentioned circuit connections in open condition.

In testimony whereof we afiix our signatures in the presence of two subscribing witnesses.

CHARLES F. KETTERING. WILLIAM A. CHRYST.

' Witnesses:

J, W. MCDONALD, O. D. Mower.

Images