US1186246A - Combined ignition and radio system. - Google Patents

Description

H. II. VAN DEVENIER.

COMBINED IGNITION AND RADIO SYSTEM, APPLICATION FILED APR.20,1915.

UNITED STATES lra',ritiri? carica. g

HARRY RANDOLPH VAN DEVENTER, OF vSUIiI'IEIlEI, SOUTH CAROLINA, .ASSGNOB, BY HESNE ASSIGNMENTS, TU SPLITDOBF ELECTRICAL CGMPANY, OF NEWARK, NEW JERSEY, A CORPOBATIQN OF NEW JERSEY. i

HBINED IGNITION AND RADIO SYSTEM.

Specication of Letters atexit.

Patented June e, 191e.

Appucauen :ned April 2o, isis., serial No. 22,585.

To all 'whom z't m ay concern Be it known that I, HARRY RANDOLPH VAN- DEVENTER, a citizen of the United States, residing at Sumter, in the county of -Sumter and State of South Carolina, have invented certain new and useful Improvements in Combined Ignition and Radio, Systems, of' which the following is a specification, reference being had to the accompanyin drawing. T

' 'his invention relates to combined 'ignition and radio s stems and more particuy larly to the use yo what is commonly termed gh tension generator so arranged as .t0 deliver current for jump spark ignition pur oses, which can, at the same time, be

use as n source of energy for radio transmission in connection with any suitable form of apparatus.

High tension generators or magnetos for" ignition are in common use in connection' with internal combustion engines. Wireless hicles driven by telegraph systems are often installed onvesuch engines, for instance, aeroplanes and airships.

My invention, for the sake'of illustration, may be considered as-ap lied to'l au. aeroplane engine. Here it wil be evident that among its advantages are the elimination of batteries heretofore necessary for supplying the radio equipment, a reduction in weight, as only a single generator for both the engine ignitionvand the wireless is used; sim- -plicity of connections and apparatus, and a wound armature type in whichthe revol'ublearmature cai-riesaprimary and secondar Winding, or the type of generator in vyhic a revolving elementl is employed which does not carry the windin s, the latter being- Vrelatively lined. I pre er the lettertype of magneto and for the sake of illutration show m system as usedntherewitli. I show here on y sudicient parts of said magneto to properly illustrate my invention, as the operation` and construction 'of such a magneto is already welt-known to those skilled in the art, except in regard to the special construction .herein described and claimed.

1 denotes the usual magnet. 2 the shaft of the rotating element which comprises the magneticrlmembers 3 and 4 of perma- -nent and opposite polarity. Carried on insl the shaftl is the gear 5 whicl engages distributer geai'nvhicli carries the rotatingv element Tof the distributer arranged to contact in the normal way with thesegments 8 and JTwhich connect to' the spark plug cables, one of which is shown. at 10. The.

rotating element 7 of the distributer is 00n- -nected to a terminal post 11.- The generating coil 12 of the magneto is supported in a movable field structure comprising the pole' piece's, one of which is shown at 13, the magnetic end plates 14 and'15 and nonmagnetic rin s 16 andy i7: This .structure together wit the intf-rrupter mechanism comprising the box or casing 18, the cam 19 and the usual interrupter contacts 20 and 21 :is angularly adjustable about the axis of the rotor by means of the handle 22 for .the purpose of varyingthe timing of the ignition.

The coil 12 carries two windings, a primary and secondary, one end of the secondary being grounded on the core of the coil and the ree end of same connecting to the contact member. 23 which is freely movable with the coil and which 'engages a fixed con-- tact member 24 carried on the insulated block 25 positioned' in the bend 'of the magnet. The circuit'being completed from 23 to 24 is carried from 24 by any suitable vmeans to the terminal 26 and also to a safety spark gap point 27 which is located at suiiicient distance from the edge ofthe magnet l -to only operate when the'gap in the external .circuit is excessive. It Will now be observed that there is a' circuit for the secondary current from the coil by Way of 'contacts 23-and 24 to sparkv gap point 27 to the magnets or frame ofthe machine and to the-core ofthe coil, or by Way of contacts audi toterminel 26' and that if the 20 syntonic systeml such as the Braun..

latter connected to terminal il, the circeuit will be completed by way f the travA "cling Contact 7 ot the distributer to the ya, rions spark plug terminals, tvoof Winch .5 are indicated at 8 and 9 and passing over the cables l0, the current Will be completed through the spark plugs in the engine and back to the frame of the magnet, a plug being indicated. at 28 and the path of the 10 secondary current theretln'ough beingindi cated by the-connecting dotted lines. It. will be` observed that terminals l1 and 2 6' form a gap'in series in the secondary circuit of the magneto between the high tension generating winding and the dietributer and to these terminals l connect any suitable forni otradio transmitting equipment.

l shoev here. diagrammatimilly the apparatus coinnxonly used in connection with a Suitable condcusers and 3l) are employed in connection with the primary 3l, ol a suitable transformer, the secondary of which connects to the radiating Wires 33 and which may be oit suitable inductance and capacity in accordance with the results desired. `Any suitable method of operating the sending circuit may be employed. l show a key arranged in an opeuatiye manner.

3g Motors as now commonly constructed have 6 and 8 cylinders, and in the case oli the latter running at ordinary speeds and driving the magneto having a distributor arranged for 8 cylinders, approximately g5 12.000 impulses per minute will flow in the circuit between the coil l2 and the moving member .'Ifof the distributer. These iinl pulses it will be'observed may pass througl'i the radio equipment consisting of the con- 40 densers 29 and 30 and the winding 31 and the passage ot this current may be suitably deflected from said condensers and winding by the operation oit` the key 35, or it it is not desired to use the radio equipment, key 35 may be arranged to be permanently closed.

in any well-known manner. And' it is obvious that it the -l-;\.y 1s operated at the usual rate of speed as used in `hand teleg-` raphy that the ignition circuit will not be materially interfered with. In fact by the proper adjustment of the condensers 29 and 30 and the coil 3l, I .find it practical to opcrate the system as shown with practically no effect on the ignition the flow of current through the spark plugs is practically uninterrupted.

One serious objection to a combined system as just described has been the attempt to utilize generators in which the intensity of the spark `was varied in unison With the ignition tin'iing. ln theqireterred form of generator here shown thecoil 12 is angularly adjustable about the artis of the magneto shaft for timing purposes and the intensity of the current is not varied by the position intcrrupter contacts 2O and '1 9 is the cam operating the interrupter.. It 'will be seen that one end ot the secondary luriruling 37 connects lo the terminal. and spark ot"L 1i tt* fr NVV gap point .al an( tia ne moraine mem )ci 7 of the distributer is coxulected to terirnual 11. 26 and ll connect to the wire-less clp/uprnent as shown.

It will be'understood that many modihcaf tions and departures can be made from the` mechanical arrangement as here shown. Therefore the invention consists broadly in the combination between a high tension ignition magneto and a nradio transmitting 38 is the condenser across the- 'Ily equipment vand more specifically with means whereby' the radio equipment may be con-- nected in the high tension Vcircuit or the magneto without rendering the current flow ing therein unfit for ignition purposes, and

also lthe arrangement whereby the timmv l r) ot the magneto may be varied without affecting the intensity ot' the current in the' radio circuit.

Having thus described my invention, I

l. The combination With (renerator having primary and secondary circuitsy of a ilistributer, ignition spr King devices eonnected thereto, a circuit l tween said secondary circuit and distributer., Sark gap terminals in said circuit monnet on said generator and radio signaling means con lnected to the terminals ot' said spark gap.

2. The combinati on with a generator hun. ing primary and secondary windings and circuits, of a distributer, .ignition sparking devices connected thereto, a circuit between said secondary circuit and said dist-ributer, a safety spark gap between said circuit and the frame oi the generator, a spark gap 'in series in said secondary circuit between said secondary Winding and distributor, and radio signaling means connected. to said last ,y mentioned gap.

3. In combination with an ignition dynamo having a high tension Winding, one end whereof is connected to the fame of said the frame of said dynamo for generating electric oscillations in the. radio-signaling means.

4. In combination, an ignition dynamo comprising primary field, a normally fixed secondary field structure having adjustable poles, revoluble means associated with the primary field -for directin the flux therefrom through'said secon ary poles alter nately and oppositely, a coil on said structure, a lever connected to the secondary field and adapted when moved to turn the same so as to effect an angular displacement of the secondary tield poles to advance and retard the spark, and radio signaling means connected to said coil.

In combination, an ignition dynamo comprising field magnets, a normally fixed adjustable generating coil in the space within the magnets, an insulating block mounted within the field magnets, and adjacent said coil, a fixed contact on said block, a movable contact carried on the coil together. with circuit connections completed through said contacts, said connections including radio signaling mea-ns.

6. In combination with an ignition dynamo having a permanent magnetic lield structure with a power shaft journaled in bearings in its opposite limbs, a rotor, a generating coil between the limbs separate from said rotor, an interrupter and a distributer outside one limb and connected to the .power shaft, ay circuit connecting said coil and distributer, radio signaling means connected to said circuit and means vin said circuit for generating electric oscillations for the radio-signaling means.

7. In combination, an ignition dynamo,

a generating coil, a current supply circuit therein, a plurality )t igniting devices connected therewith, radio signaling means connected to said supply circuit, and means whereby the timing of said igniting devices may be varied without affecting the intensity of the current in said supply circuit, said means including a timing lever external said dynamo whereby said generating vcoil may be axially adjusted in relation tothe shaft of said dynamo. 5

In testimony whereof I hereunto affix my` signature in the presence of two Witnesses.

HARRY RANDOLPH VAN DEVENTER. Witnesses: f

E. H. RHAME, c EDNA IsLER.

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