US1134983A

US1134983A - System of electrical transmission.

Info

Publication number: US1134983A
Application number: US85062714A
Authority: US
Inventors: Richard A Engler
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-07-13
Filing date: 1914-07-13
Publication date: 1915-04-06
Anticipated expiration: 1932-04-06

Description

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Patented Apr. e, 1915.

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SYSTEM 0F ELECTRICAL TEANSMISSUN.

APPLICATION msn wuts 19H IMJ 0R EN lag/1A nyA. ENGLER. SYSTEM 0F ELECTRICAL TRANSMISSION.

AFFLICATION F1LD JULY-13.1914A Patented Apr. 6, 1915.

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RICHARD A.,A.. ENGLEB, 0F D'UBUQUE, IWA.

SYSTEM OF EIhECTRIClAL TRANSMISSION.

- specification or Leners Patent. 4

Patented Apr. 6, 1915.

Application ned my 1s, 1914.. sriamassdsz?.

' T0 all 1li/wm it may concern'.-

Be it known that I, RICHARD A. ENGLER, citizen ot' the United States.l residing at Dubuque, in the county of Dubuque and State of Iowa, have invented a certain new and useful Improvement in Systems of Electrical Transmission, of which the following is a fulL'clear, concise, and exact de scription, reference being had to the accompanying drawings,- forming a part of this specification.

My invention relates to systems of electrical transmission and employs a sound producing electric lamp in an operating circuit, means for impressing wave form current upon said circuit to cause varying sound waves and light rays to emanate from the lamp, circuit controlling responsive devices respectively subject to the action .of the sound waves and light rays, a receiving responsive device, and a circuit for the receiving responsive device which is jointly controlled by said circuit controlling responsive devices.

In the preferred embodiment of the invention the means for im ressing wave form current is inthe form oa telephone transmit-ter while the'circuit controlling responsive devices desirably reside in a second telephone transmitter which e operated by the sound waves emanating from the electric lamp and a resistance controlling device which is subject to the influence of the light rays emanating from said lamp to change the resistance according to the light rays due to the telephonie current impressed upon the lamp.

I will explain my invention more fully by reference to the accompanying drawings showing preferred embodiments and certain uses thereof but to which embodiments and uses the invent-ion is not-to b e limited, Figure 1 being a diagram showing a system of circuits and apparatus that constitute one form oi' the invention; and Figs. 2, 3 and diagmuis of modiications of the embodiment of j-the invention illustrated in Fig. 1.i

Like parts are indicated by similar characters of reference throughout the. different figures.

Referring first more particularly to Fig. '1, there is there illustrated a primary or inducing main telephone circuit that includes a talking battery or other source of suitable current 1,\ an impedance coil 2, a

lamp 3 supplied with current from the battery 1 and shown in the form of an arcophone or aspeaking arc having carbons 4, a primary winding 5.0i an induction coil,

and some means for regulating the intensity 50 of the .light produced by the lamp for a given flow of current, this means being pref- I erably in the form of a rheostat f5. The means for effecting fluctuationof the cur? rent in the main circuit is in the 'form of a 65 .telephone transmitter 7 of usual construction, though the invention is not .to be limited to the employmentof a telephone transmitter. When this transmitter is spoken into current variations occur in the 7o main circuit because the impedance coil A2. prevents the flow of rapid fluctuations of current through it, there being a corresponding variation of the flow of current through the carbons 4 of the lamp 3. The light at 75 the arc or other light producing center of the lamp varies in response to the variation of current in the main circuit, the lamp producing correspondingly varying sound waves and .light rays. IThe condenser 8 is located 80 in bridge of the main circuit, the battery l and rheostat 6 being upon one side of this bridge wliile the rest of the apparatus which has been so far specifically described is upon the other side of the bridge. denser serves to increase the value of the etl'ect produced in the arc. The condensing lens 9 1s traversed by varying light rays produced by the lamp while the metallic dia? phragm 10 is subject to the varying sound 90 waves producedby the lamp. For the sake ofconvenience the elements 9 and 10 form 'component parts of the walls of a housing 11 which is desirablyv employed for inclosing the lamp. The lens 9 is employed in order 95 'that it may concentrate. the light rays emanating from a portion of the lamp and direct the same upon a selenium cell 12-or other sensitive medium whose resistance is varied through a wide range upon small 100 variations in the intensity of the light whereby the light may effectively serre to vary the resistance of a circuit throughout a comparatively wide range, to which end the element l2 may-be directly included in 105 the circuit. whose resistance is thus to be modified in accordance with the variation Off light emanating from that portion of thelamp 3 which 1s individual to the lens ,9.

The circuit illustrated in Fig-1 includes, 1n 11 This cony, I Latn-1,1?

, 2 insignes ...dition to the selenium cell 12, a primary 1 3 of :in induction coil and a battery 14, or other suitable source of current, for supplying the selenium cell and the circuit inc ud- 5 ing the same with current. A condenser 15 is desirably included in direct shunt of'the battery 14 to increase the value of the effects ultimately produced in the primary 13 by the operation of the varying light upon the cell 12. Q

The sound waves emanating from a portion of the lamp that is individual to the diaphragm 10 impinge upon said diaphragm to vary the intimacy of its constant 15 engagement with a contact 16, thereby to vary the resistance of a circuit in which this diaphragm and contact are .,.tluded This .circuit contains, in addition to the diaphragm 10 and contact 16, the primary 17 of an induction coil and a battery 18, or

other suitable source of current, for pplying the circuit with current. -Ai ndenser 19 is desirably included in di ct shunt of the battery 18 to increase the value of the effects ultimately produced in the primary 17 by the operation of the varyingsound waves upon the diaphragm 10.

TheV primaries

5, 13 and 17 are respectively provided with

secondaries

20, 21 and 22. n

Fig. l, these secondaries are'shown as ing serially included in a secondary lcircuit that is common to the circuits including the various primary windings. This secondary circuit is shown as also including a winding 23 which is disposed aboutthe permanently magnetized core 24, the elements 23 and 24 being preferably similar to the windin and coreof a telephone receiver. Telep onic current impressed uponthe main telephone circuit that includes the lamp 3, the varying light and sound waves emanating from the lamp, the current in the circuits including the

primary windings

5, 13 and 17, and the current traversing the

coils

20, 21, 22 and 23, should be maintained in phase to which end a condenser 25 is serially included in the circuit that contains the coils`20, 21, 22 and 23 to neutralize the lag that would otherwise be due to the self-induction in the magnet winding 23, and closed circuits containing coils 26 and 27 are placed in secondary relation to the primaries .13 and-17 respectively, these closed or auxiliary second ary circuits serving to offset the sli ht lag that would otherwise be present in t e primaries 13 and 17. The slight lag in these primaries would btherwise be due to the fact that the counter M. M. F. produced in the

secondaries

21 and 22 would be slightly less than the M. M. F. of said primaries since the winding 23 has effective resistance, the auxiliary secondaries 26 and 27 rectifyin'g this condition. By the entire arrangement described all of the current uct-ua-l tions in the various primary circuits are incoming impedance.

phase with the light raysxd sound waves of the speaking lamp a'nd also with the variations in the operated transmitter 7'.

The 'circuit arrangement illustrated in Fig. 1 is preferred since,each reproducing element has the shortestim'ible circuit and least resistance accompanied by corresponding greatest percentage of variation 0j the current flow, though I do not wish to be" limited to the inclusion of the main secondary coilsin the same circuit nor do I wish to be limited to the inclusion of the auxiliary secondary coils in seperate circuits. The receiver that includes the elements 23 .and 24 may itself be provided with a diaphragm 28, such as is found in a telephone receiver, and this diaphra may be in constant though varying enga ement with a tained in the circuit which also inc udes iiny suitable agency that is to be cont olled by the receiver.

contact 29. The elements 28 and 'l are con- This circuit may include an impedance coil 2'A having a -circuit arrange-,-

ment similar to that of the impedance coil 2, in whichl event the receiver correspon to the receiver 24 and controlled by the elements 28 and 29 may have a diaphragm free of a contact to enable the a lication of such nal receiver to the ear. y including the receiver winding 23 in asecondary circuit and causing it to iniluenee the operation of an extraneous device such as the dia.

phragm 28, such secondary circuit can have the smallest possible and conmint resistance most eectively to overcome the impedance in the circuits containing the primary windin Iii the arrangement illustrated in Fig. 2 the elements v 10, 16, 12 and 13 are included in serial relation in a circuit path -`that is in shunt -of .the impedance coil 2 and consequently in parallel with the circuit path that includes thetransmitter- 7 whereby current emanating from the battery 1 is supplied to the clefmentsl 10, 1,2ali11d 16 withouthe necessity'o emp.oyin` g t e auxili atter 14. In Fig. 2 the primary windinzgxiB Servei the purpose of an impedance coil when the surges of the current are the wrong way. For4 1nstance, if the transmitter spoken into increasesA the current iiow then current flow would tend to decrease in the branch talking circuit, a result which is prevented by the impedance furnished by said primary 13. Also, the two secondary currents induced at 2O and 2l would tend to neutralize each other were it not for the impedance furnishedby the primary 13. But when the current in- .creases in the main talking circuit and the reaction of the arc of the lam also causes an increase of current in these circuits, then the secondaries function properly together, that is current dow is aiiowed in them, thus over- In the system of Fig. 2 current variations vtend to be set up in both ist tbf u'iin and secondary talking circuits by the action 'of the transmitter 7 but it is retarded or choked in the secondary talking circuit, being a surge in the 'wrong direction, but the variation of tbe main circuit starts the arc to act to set up a surge in the proper direction in the secondary talking circuits.

Fig. 3 illustrates the primary transmitter 7 and the transmitting elements 1'2. 10 and 16 in serial relation in the same telephonie which is jointlj,J controlled by said circuit controlling responsive devices.'

3. A system of electrical transmission including a sound producing electric lamp and its operating circuit; a telephone transmitter for lmpressmg telephonie current upon said circuit to cause 'varying vsound waves and light rays to emanate from the lamp; circuit controlling responsive devices respectively subject to the action of the sound waves and circuit, the circuit path that includes these ;liglit rays; a receiving responsive device;

-elements being in shunt of the impedance.

device 52. In the form ot' the invention illustrated by Fig. 3 the primary coils 1? and 17 are replaced by a, primary coil 13 in inductive relation to a secondary coil 211 that replaces the secondary coils Q1 and 22.

In the arrangement illustrated in Fig. 4, the primary talking current is impressed upon the speaking lamp by means of'an induction coil having a primary 29 included in a closed local circuit with the transmitter 7 and the transmitter battery 30 and a secondary coil 31 included in series with the speaking lamp. In this arrangement the battery 1 is separated from the transmitter T and in order that the battery 1 may be maintained in proper association with the speaking lamp the secondary 31 is included in circuit with the lamp through condensers 32. By this arrangement great microphone variations may be secu-red with the aid of a circuit ct' small resistance.

While l have herein shoivn and particularly described the preferred embodiment oi. my invention I do not Wish to be limited to 4the precise details of construction and circuit arrangemcnt shown. as changes may readily be made without departing from the spirit of my'invention, but

Having thus described my invention I claim as neu' and desire to secure byLetters Patent the olloivingz- 1. A system of electrical transmission in- A cluding a sound producing electric lamp and its operating circuitrmeans for impressing wave form current upon said circuit to canse varying sound waves and light rays to emanate from'tlihmp; circuit controlling responsive devices respectively subject to the action of the sound waves and light rays; a receiving responsive device; and a circuit for the receiving responsive device which is' jointly controlled by said circuit controlling responsive devices.

2. Asystem of electrical transmission including a sound producing electric arc lamp and its operating circuit; means for impressing wave form current upon said circuit to cause varying sound waves and light rays to emanate fromtlie arc lamp; circuit controlling responsive devices respectively subject @to the-action of tbe sound waves and light rays; a receiving responsive device; and a c;.cu1t for the receiving responsive device and a circuit for the receivin responsive l device which is jointly controlle by said cir- -ing responsive device-which is jointly controlled by said circuit controlling responsive devices.

A system of electrical transmission including a sound producing electric lamp and Aits operating circuit; means for impressing wave form current upon said circuit'. to cause varying sound waves and light rays to emanate from thelamp; circuit controlling responsive devires respectively in the form of a transmitter operated by sound waves emanating from the lamp; a circuit resistance varying element operable by the varying rays of the lamp to effect changing resistance;l a circuit controlled by said circuit controlling responsive devices; and a receiving responsive device controlled'bysaid circuit. I

6. A system of electrical transmission including a sound producing electric arc lamp and its operating circuit; means lfor impressing wave form current upon-said circuit to cause varying sound waves and light rays to emanate from the arc lamp; circuit controlling responsive devices respectively in the form of a transmitter operated by sound waves emanating from the arc lamp; a circuit rcsistancc varying element operable by the'varyinfi rays of tbe lamp to effect chantring'resistance: a circnitlcontrolled by said circuit controlling responsive devices; and

a receiving` responsive device controlled by said circuit.

7. A system of electrical transmission includinsy a sound producing electric lamp and its operating circuit; a telephone transmitter for impressing telephonie current upon said circuit to cause varying sound waves and light rays to emanate from the lamp; circuit controllingres onsive devices respectively in the form o a transmitter operated from the arc lamp;

by sound waves emanating from the lamp; a circuit resistance varying element operable by the varying raysmf the lamp to effect changing resistance; a circuit controlled by saidcircuit controlling responsive devices; and a receiving responsive device controlled by said circuit.

8. A system of electrical transmission in cluding a sound producing electric arc lamp and its operating circuit; a telephnneiransmitter for' impressing telephonie current upon said circuit to cause varying sound waves and light rays toemanate from the arc lamp; circuit controlling responsive devices respectively in the formof a transmitter operated by sound waves unan-ating snc controlled by said responsivedevices;

and a receiving responsive .de' vice controlled by said circuit.

a. circuit resistance varying element operable by the varying rays of .the .lamp to effect induction windings interposed between the circuit controlling responsive devices and the circuit for the receiving responsive device.

12. A system of electrical transmission including a sound producing electric arc lamp and its operating circuit; a telephone transmitter f or impressing telephonie current uponsaid circuit to cause varying sound waves and light rays to emanate from the arc lamp; circuit controlling responsive devices respectively subject to the action of the sound Waves and light rays; a receiving responsive device; a circuit for the receiving responsive-device which is jointly controlled by said circuit. controlling responsive dejvices; and induction windings interposed between the circuit controlling responsive lsponsive device.

13. A system of electrical transmission in- `cluding a sound producing electric lamp and j :its .operating circuit; means for impressing `isvave form current upon said circuit to cause 9. A system of electrical transmission `in-aavarying sound waves and light rays to emacluding a sound producing electric lamp and lts operating circuit; means for impressing wave form current upon said circuit to cause varying sound Waves and light rays to emanate from the lamp; circuit controlling responsive devices respectively subject to theI action of the sound waves and light rays; a receiving responsive device; a circuit for the receiving responsive device which is jointly controlled by said circuit controlling responsive device; and induction windings interposed betweenthe circuit controlling responsive devices and the circuit for the receiving responsive device.

10. A syst-em of electrical transmissionincludiug a sound producing electric arc lamp and its operating circuit; means for impressing wave form current upon said circuit to cause varying sound waves and light rays to emanate from the arc lamp; circuit controlling responsive devices respectively subject to the action of the sound waves and light rays; a receiving responsive device; a

circuit for the receiving .responsive device which is jointly controlled by said` circuit controlling responsive devices; and induction windings interposed between the circuit controlling responsive devices and the circuit for the receiving responsive device.

11. A system nf electrical transmission including a sound producing electric lamp and its-operating circuit; a telephone transmitter for impressing telephonie current upon said circuit to cause varying sound waves and light rays to emanate from the lamp; circuit controlling responsive devices respectively subject to the action of the sound waves and light rays; a receiving responsive device; a circuit for the receivin responsive device which 1s jointly control ed by said circuit controlling responsive device and nate from the lamp; circuit controlling responsive devices respectively in the form of atransmitter operated by sound wa ves emanating from the lamp: a circuit resistance varying elementoperable by the varying rays of the lamp to effect changing resistance; a circuit controlled by said circuit controlling responsive devices; a receiving responsive device controlled by said circuit; and induction windings interposed between. the circuit controlling responsive devices and the circuit.for the receiving responsive device.

14. A system of electrical transmission including a sound producing electric arc lamp and .its operating circuit; means for impressing wave form current upon said circuit to cause varying sound waves and light 'rays to emanate from the arc lamp; circuit controlling responsive devices respectively in the form ofv a transmitter operated-by sound waves emanating from the arc lamp; a circuit resistance varying element operable by the varying rays of the lamp to effect changing resistance; a circuit controlled by said circuit controlling responsive devices; a. recelvmg responsive device controlled by said devices and the circuit for the receiving re Copies of this patent may be obtained for il varying rays of the lamp to eiect changing resistance; a circuit controlled by said c ir cuit controlling responsive devices; a receiving responsive device controlled by said circuit; and induction windings interposed between the circuit controlling responsive de- 1Vlees and the circuit for the receiving'responsive device.

16. A system of electrical transmission including a sound producing electric arc lamp-f and its operating circuit; a telephone transmitter for impressing' telephonie' current upon seid circuit to cause varying sound waves and light rays to emanate from the arc lamp; circuit controlling responsive devices respectively in the form or' a transmitve cents each, by addressing the Conum'ssioner o! Patents, Washington, D. C.

w g Itis hereby certified that in Letters Patent No. 1,134,983, granted April 6, 1915, i upon the application of Richard A. Engler, of Dubuque, Iowa, for an-improvement T5? in Systems of Electrical Transmission, an error appears in the printed specifica Y tion requiring correction as follows: Page 4, lines 2142-2, strike out the Words and semicolon and a receiving` responsive devices; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent OHicc.

. signed and sealed this 20th day of July, A. D., 1915.

[SEAL] R. F. WHITEHEAD, 8 'Acting Uommz'ssz'oner of Patents.