US957270A - Combined magneto and battery switch for electric igniters. - Google Patents

Description

A. J. STUDNIOKA & G. W. CAMPBELL. COMBINED MAGNETO AND BATTERY SWITCH FOR ELECTRIC IGNITERS. APPLIOATION FILED NOV. 18, 1908. 957,270. Patented May 10, 1910.

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COMBINED MAGNETO AND BATTERY SWITCH FOR ELECTRIC IGNITERS. APPLICATION FILED NOV.1B,\1908.

957,270. Patented May 10, 1910.

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ALBERT J'. STUDNICKA. AND CHARLES W. CAMPBELL, OF MINNEAPOLIS, MINNESOTA.

COMBINED MAGNETO AND BATTERY SWITCH FOR ELECTRIC IGNITERS.

To all whom it may concern:

Be it known that we, ALBERT J. S'rUDNIoKA and CHARLES \V. CAMPBELL, citizens of the United States, residing at Minnea olis, in the county of Hennepin and State 0' Minnesot'a, have invented certain new and useful Improvements in Combined Magneto and Battery-Switches for Electric Igniters; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to ignition mechanism for explosive engines and has for its especial ob ect the provision of improved switch mechanism for rendering either a battery or a magneto operative at will through the same sparking lugs.

To theabove en s the invention consists of the novel devices and combination of devices hereinafter described and defined in the claims.

As is well known, it has become the practice to use both battery and magneto to supply the s arking current to explosive engines, but it has been considered necessary to employ different sets of sparking plugs because it is impossible to connect two circuits to a sparking plug at the same time.

Our invent-ion rovides an improved switch, which is a apted for use either in connection with a single cylinder or a multiproved switch cylinder explosive engine and by means of which, when the battery is thrown into ac tion the magneto is thrown out of action, preferably by openin the sparking circuit of said magneto and s ort-circuiting the armature circuit-thereof through a portion of the battery circuit. The dynamo, when its sparking circuit is thus opcnedand its armature short-circuited, will not, of course, generate current.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referrmg to the rawings, Figure 1 is a digrammatic view illustrating our invention connected to a multi-cy'linder engine. Figs. 2 and 8 are plan views of'the imtproved switch. Fig. 4 is a plan view of e imwith the upper head thereof Specification of Letters Patent.

Patented May 10, 1910.

Application filed November 18, 1908. Serial No. 463,167.

]removed, and Fig. 5 shows the improved switch partly in elevation and partly 1n vertical section.

The numeral 1 indicates a multircylinder explosive engine, equipped with four sparkin plugs 2, one for each cylinder.

he numeral 3 indicates the magneto, the field of which is grounded on the engine and is provided with four secondary contacts.

The numeral 5 indicates a battery and the numeral 6 indicates a sparking coil inclosing case as an entirety.

The parts so far described may be treated as of standard, well-known construction and arrangement, the said sparking coil being, as indicated by the wiring thereof, what is known as a separate unit vibratory coil.

Our improved switch preferably has a cylindrical case or body 7 of vulcanized rubber, wood fiber or other suitable insulating material and it is provided at its'upper end with a detachable head 8 of'similar insulatinggmaterial.

otatively mounted within and extended axially through the case 7 is a shaft 9 of the insulating material, preferably such as above indicated. This shaft has reduced ends 10.

.It constitutes trunnions, generally one in the upper and one in the lower head of said case. This shaft 9, for the four cylinder engine shown, is provided with four metal contact segments 11, the hubs of which are readily secured to said shaft. These segmental contact-s are completely insulated from each other and they are preferably located vertically one over the other. At its up said shaft 9 is provided with a radia ly projecting lever 12 that works through a suitable slot in the case 7 and the hub of which is formed. witha segmental compact flange 18.

The lever 12 on itsupper surface carries a air of contacts 14 and 15, which, when said lever is positioned, as shown in Figs. 2 and 4, engages the impending ends of contacts 16 and 17 applied to the top 8 of the case. A pair of binding posts 18 and 19 are also apphed to the said'case top 8. The said binding post 19 is primarily connected by wire 20 to the contact 16 and the binding post 18 is connected to one end of a s ring contact arm 21, the free end of which a ways er end,-

maintains contact with the segmental flange 13 or said lever 12. For cooperation with each contact segment 11, the case 7 is provided in its sides wlth three contacts, 22, 23 and 24, which contacts are alforded by binding posts with inwardly projecting extremi-.

ties.

In the construction illustrated, the contact segments 11 extend through approximately ninety degrees and hence the contacts 22 and 24 are located diagrammatically opposite to each other and the contact 23 is located midway between the two. .VVith, this construction, the contact segments 11 may be moved, as shown in Fig. 2,. so as to connect the contacts 22 and 23, or they may be moved as the sparking coil are connected by wires 27 to the contacts 22. The contacts23 are connected by wires 28, one to each offlthe spark ing plugs 2. The secondary eontacts'4 of the magneto 3 are connected by wires 29, one to each of the contacts 24. A wire 30 connects the contact 17 to the. other terminal of the battery 5. The binding post 18 is connected y Wire 31 to the engine frame; and the armature of the magneto 3 is connected by wire 32 to the binding post 19. f

In practice, a suitable timer or distributor will, of course, be used to regulate the amount of lead which will be given to the sparks produced in the several cylinders in respect to several pistons.

The operation of the ignition mechanism above described, briefly stated, is as follows: When the battery is-to be used to supply the spark producing current, the lever 12 will be set in the position indicated in Figs. 2, 4 and 5. When thus set, the'current will flow from the battery as follows: through the wire 25, the primary or sparking coil 6 and the wire 26 to the frame of the enginel, from thence through wire 31, binding post 18, contact arm 21, segmental flange 13-and lever 12 to. contact 14 of said lever, and from thence through contact 17 and wire 30 back to the said battery 5. The current induced in the secondary of the sparking coil will flow through wires 27 to contacts 22, thence through segmental switch contacts 11 to contacts 23 and from thence through wires 28 to the respective sparkingplugs usually un-' der control of timer not shown.- One of the electrodes of each sparking plug will, of course, be connected to the engine frame and hence this induced current, as well as the primary of the battery current will finally return to the battery through the wire 31,

cylinder explosive engines,

binding post 18, spring contact 21, lever 11, contacts 14 and. 17 and'wire, 30. When the said parts are adjusted as above stated, the armature of the, magneto .3 will he short-circuitedthrough the wire 32, binding post 19, wire 20, contacts =-16-and 15, lever 12, its flange 13, s ring contact 21, binding post 18, wire 3l an the frame of the engine, it being understood, of course, that one side of the armature of the'm'agneto 3 is customarily grounded through the said engine frame. At this time, it will-also be notedthe sparking circuit of the magneto armature is broken because. there is .no connection between the contacts 23 and 24, to which the Wires 28 and-29, respectively, are connected. Hence, when the battery is in action, the magneto is cut out of action. When the magneto is to be thrown into actionand the battery cut out of action, the contact segments 11,,- by means of the lever 12, are

moved into the position indicated at Fig. 3. When the parts'arethus adjusted, the bat tery circuit is broken because there is no electrical connection between. the contacts 22 and 23 to which the wires 27 and 28*,respectively, areconnected, and at this time the magneto circuits are closed as follows: from the secondary contacts 4 through wires 29 to contacts 24, thence through the segmental switch con-tacts 24, thence throughthesegmental switch contacts 11 to contacts 23 and from thence through the wires 28 to the respective sparking plugs 2.

at we claim 1s- I 1. In anignition mechanism for multicylinder' explosive engines, a single sparking plug for each-cylinder, a'battery, a magneto, a common switch, a sparking coil having a multiplicity of secondary wires extending to said common switch, magneto secondary wires also extending to said common switch, secondary plug wires extending from sald switch to the several sparking plugs, a primary sparking'circuit including said battery and saidcommon switch, and a primary magneto circuit including said common switch, substantially as'described.

2. In an ignition mechanism for multia single sparking plug for each cylinder, a battery, a magneto,

a common switch having a multiplicity of.

fixed and a multiplicity ofmovable contacts, a sparking coil having .a multiplicity of secondary wires extending to-fixed contacts of said switch, magneto secondary wires con-' necting said magneto to other fixed contacts 'ofsaid common switch, secondary plug wires connecting the several sparking plugs to still other fixed contacts of said common switeh,a primary sparking circuit including said'battery and said commonswitch, and a primary magneto circuit including said common switch, the fixed and movable con cuit and break the secondary magneto cir- 10 tacts of said common switch being so related cuits.

that, in one position, they will close the sec- In testimony whereof we affix our signaondary magneto circuits to said sparking tures in presence of two witnesses.

plugs and break the primary magneto cir- ALBERT J. STUDNIGKA. cuit and the primary and secondary s'park- CHARLES WV. CAMPBELL, ing coil circuits, and in another position will Witnesses:

close the primary and secondary sparking HARRY D. KILGORE,

coil circuits and the primary-magneto cir- F. D. MERCHANT.

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