US2129332A - Telephone system - Google Patents

Telephone system Download PDF

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Publication number
US2129332A
US2129332A US15342A US1534235A US2129332A US 2129332 A US2129332 A US 2129332A US 15342 A US15342 A US 15342A US 1534235 A US1534235 A US 1534235A US 2129332 A US2129332 A US 2129332A
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United States
Prior art keywords
station
local
transmitter
radio
sub
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Expired - Lifetime
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US15342A
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English (en)
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Mastini Domenico
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Individual
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Individual
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Publication of US2129332A publication Critical patent/US2129332A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]

Definitions

  • the station 10 My arrangement requires no change at the cen- I consists of a transmitter I1 and a receiver I9, 10
  • the complex I required being at the individual subscriber's sta consists similarly of a stationary wireless transtions where there is added what I call a committer 2I and a receiver 23, with the correspondplex, which is used instead of the ordinary in- .ing aerials.
  • Fig. 1 is a schematic view exemplifying the In case 1 the conversation circuit is established 20 general principles of my invention, and in the following manner:
  • a micro- Fig. 2 is a diagram of the circuits which I phone at the radio station I is hung up, the may employ. transmitter ll of station I is inoperative, and
  • the complex I Under the actuation of plified in high frequency amplifier 29, and is this remote control, the complex I is connected passed on to a detector tube 3
  • the central station 5 While the ordinary telethe detected high frequency oscillations prophone apparatus 9 at the sub-station is disconduce a direct current and this will give rise to nected from the network, and gives rise to a potential at the ends of a variable poten- 35 operations in the network circuit of the centiometer 33 in the cathode circuit of the detral station similar to those which would have tector. A portion of this potential is passed to been produced had the apparatus 9 called the a low frequency amplifier 35, while the total apparatus 3 directly.
  • the radiant energy, modpotential drop acts on the grid circuit of a sub- 40 ulated at the remote radio station I, passes to sequent tube 31.
  • This tube. 31 is directly cou- 40 the complex I, and the voice-modulated current pled with an amplifying stage (tube 39), the passes over the previously established wire confunction of which is to amplify both the moduversation circuit of the telephone network to lated current and the direct current.
  • a bridge system is provided in the plate cir- Conversely, an incoming call made from any cuit of the tube .39 across the points (apices) 4,5 subscribers station Will actuate a transmitter in of which there is connected an impulse relay 4
  • a regulating rethrough the radiated energy actuates a receiver sistance 45 in the bridge, the latter, in the abin the remote station I and upon response of the sence of a carrier wave. can be set to zero, or 50 latter, completes the conversation circuit I3. balanced.
  • Calling impulses coming in from station I may then be sent over the line to the central station.
  • the oscillator grid circuit of the transmitter I1 is connected to the movable element 65 and to the upper contact 61 of a dialing device 69; A:
  • is also associated with the element 65 and the terminals of a grid biasing bat-.
  • tery 13 are connected, respectively, to the contacts.
  • the grid biasing battery therefore, is intere mittently interposed in the grid circuit of the oscillator by actuation of the dialing device, the polarity of the battery and its potential being such that the grid receives a blocking negative voltage when the said battery is in circuit.
  • the oscillator may function normally.
  • the interruptions of the oscillating current, or of the carrier wave, corresponding to the desired subscribers number, operate, at the receiver 23, to cause the relay 4
  • a slow release relay 15 is actuated thereby.
  • This relay is of thermic type and, after being energized, holds the armature attracted for thirty seconds or for any other suitable period of time.
  • a contact 11 of this relay actuates the transmitter T and a contact!!! actuates a buzzer 8
  • therefore, will send oscillations, which are modulated by the inherent frequency of the buzzer and which are received by the movable receiver I9 and passed to the associated telephone apparatus 83. There they produce a call and, if it corresponds to the number of the sta-.
  • 1 now sends a carrier wave which, after amplification and reception through the stationary receiver 23, actuates the relay 4
  • actuates relay 41 which switches in the telephone line and at the same time closes the feed circuit of the stationary transmitter 2
  • the-plant issimplifiedflit' being suflicient to establish connection with the central exchange in the manner described previously, and, in a central having local batteries, to send out another calling current.
  • circuit described herein only by way of example may be modified in different ways.
  • other rays for example, light rays, may be employed instead of radio connections.
  • a remote radio transmitter In combination, a remote radio transmitter, a local telephone sub-station, a central station, wire lines normally interposed between said local sub-station and said central station, local radio receiving apparatus and means whereby radio signals received by said local receiving apparatus from said remote radio transmitter cause the disconnection of the local sub-station from the wire lines and the connection of the radio receiving apparatus thereto instead.
  • a remote radio transmitter a local radio transmitter, a local radio receiver, a local telephone sub-station, acentral telephone station, Wire lines normally connecting said substation to said central station, and means responsive to an incoming radio signal, from said remote station, for causing the sub-station to be disconnected from said wire lines and for causing the connection to said lines of said local radio transmitter and said local radio receiver.
  • a remote radio transmitter a local radio transmitter, a local radio receiver, a local telephone sub-station, a central telephone station, wire lines normally connecting said substation to said central station, and means whereby a signal from said remote transmitter, after demodulation by said local receiver, causes the disconnection of said wire lines from said substation, the connection of said local radio receiver and said local radio transmitter to said wire lines and the energization of said local transmitter.
  • a remote :radio transmitting and receiving station a local radio transmitting and receiving station situated near a local telephone sub-station, a central station, wire lines normally interposed between said local substation and said central station, and means by which the local radio transmitting and receiving station, by the action of the energy transmitted from the remote radio transmitting and receiving station, is connected to the central station and the local telephone sub-station is disconnected.
  • a telephone sub-station two wire lines normally connecting the sub-station and the central station, a local radio transmitter and receiver associated with the sub-station, a remote radio transmitter and means for disconnecting said sub-station from said wire lines and connecting said local transmitter and receiver thereto in lieu thereof, said means being responsive to radiant energy received from said distant radio transmitter.
  • a central telephone station a sub-station, two wire lines extending from the central station to the sub-station, a local radio transmitter and receiver disposed in proximity to the sub-station, a remote radio transmitter and receiver, means whereby a carrier wave received by the local radio receiver causes disconnection of the sub-station from the lines and connection to said lines of the'local radio transmitter and receiver as well as energization of the local transmitter and means at the remote transmitter for producing calling impulseswhereby said remote radio transmitter and receiver may be placed in communication with a predetermined sub-station associated with said central station.
  • a central telephone station a sub-station, a communication channel, constituted by at least two wires, extending from the central station to the sub-station, a local radio transmitter and receiver disposed in proximity to the sub-station, a remotely disposed radio transmitter and means associated with said local radio transmitter and receiver for operatively connecting both of them to said communication channel and for disconnecting the sub-station therefrom in response to the reception by said local receiver of a carrier wave from said remote transmitter, said means, upon cessation of said carrier wave, also functioning to disconnect said local transmitter and receiver from said communication channel and to reconnect the substation thereto.
  • a remote radio transmitting and receiving station a local radio transmitting and receiving station situated near a local telephone sub-station, a central station, wire lines normally interposed between said local substation and the central station, means by which the local radio transmitting and receiving station, by the action of the energy transmitted from the remote radio transmitting and receiving station, is connected to the central station and the local telephone station disconnected, means for transmitting a calling signal, means responsive to said calling signal for producing momentary energization of the local transmitter, and a signal device at said local sub-station energized by said signal, said last-named means and said device being operative contemporaneously.
  • a remote radio transmitting and receiving station a local radio transmitting and receiving station situated near a local telephone sub-station, a central station, wire lines normally interposed between said local substation and the central station, means by which the local radio transmitting and receiving station, by the action of the energy transmitted from the remote radio transmitting and receiving station is connected to the central station and the local telephone station disconnected, means for producing momentary energization of the local transmitter and for modulating the carrier wave of the local radio transmitter for sending to the remote radio receiver a calling signal, and a signal device at the local sub-station, both said device and said lastnamed means being activated by a calling signal coming from the central station.
  • a remote radio transmitting and receiving station a local radio transmitting and receiving station situated near a local telephone sub-station, a central station, wire lines normally interposed between said local station and the central station, means by which the local radio transmitting and receiving station, by
  • the action of the energy transmitted from the remote radio transmitting and receiving station is connected to the central station and the local telephone station disconnected, means for producing momentary energization of the local transmitter and for modulating the carrier wave of the local radio transmitter for sending to the remote radio receiver a calling signal, a signal device at the local sub-station, both said device and said last-named means being activated by a calling signal coming from the central station, and means for disabling said means for producing momentary energization in response to said energy received from the remote radio station.
  • a remote radio transmitting and receiving station a local radio transmitting and receiving station situated near a local telephone sub-station, a central station, wire lines normally interposed between said local station,
  • the local radio transmitting and receiving station means by which the local radio transmitting and receiving station, by the action of the energy transmitted from the remote radio transmitting and receiving station is connected to the central station and the local telephone station disconnected, means for producing momentary energization of the local transmitter and for modulating the carrier wave of the local radio transmitter for sending to the remote radio receiver a calling signal, a signal device at the local sub-station, both said device and said lastnamed means being activated by a calling signal coming from the central station, and means for disabling said means for producing momentary energization in response to said energy received from the remote radio station and means at the remote radio transmitter for producing carrier wave impulses which after demodulation by the local radio receiver are sent to the central station for selecting and calling the desired subscriberstation.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US15342A 1934-04-12 1935-04-08 Telephone system Expired - Lifetime US2129332A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT788231X 1934-04-12

Publications (1)

Publication Number Publication Date
US2129332A true US2129332A (en) 1938-09-06

Family

ID=11316586

Family Applications (1)

Application Number Title Priority Date Filing Date
US15342A Expired - Lifetime US2129332A (en) 1934-04-12 1935-04-08 Telephone system

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Country Link
US (1) US2129332A (enrdf_load_stackoverflow)
BE (1) BE408922A (enrdf_load_stackoverflow)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488153A (en) * 1947-03-04 1949-11-15 Jay D Wiener Portable telephone extension
US2508613A (en) * 1947-03-19 1950-05-23 Autophon Ag Arrangement for radio-telephone traffic through exchange between mobile stations andbetween such stations and a telephone network
US2523914A (en) * 1947-05-09 1950-09-26 Automatic Elect Lab Radiotelephone system
US2530815A (en) * 1949-02-02 1950-11-21 Automatic Elect Lab Mobile radiotelephone system having a single channel and a single frequency
US2536825A (en) * 1948-03-26 1951-01-02 Stromberg Carlson Co Multiplex telephony
US2564660A (en) * 1946-08-02 1951-08-21 Ollie J Allen Means for interconnecting radio and telephone systems
US2616032A (en) * 1948-10-20 1952-10-28 Automatic Elect Lab Single channel mobile telephone system
US2649539A (en) * 1948-02-21 1953-08-18 Bell Telephone Labor Inc Microwave carrier telephone system
US2791692A (en) * 1952-06-20 1957-05-07 Jr Edward Theordore Kurtzner Pulse-beacon transmitter circuit
US2883521A (en) * 1952-10-23 1959-04-21 Motorola Inc Radio dispatching system for railroad use
US2894121A (en) * 1956-02-28 1959-07-07 Warrick D Morison Jr Radiotelephone system featuring switching circuit for portable radio transmitter andreceiver
US2907874A (en) * 1955-02-25 1959-10-06 Westinghouse Electric Corp Microwave communication system
US3065421A (en) * 1957-05-21 1962-11-20 John M Hart Radio-telephone communication system having means for automatic direct dispatch between mobile stations
US3193623A (en) * 1961-08-07 1965-07-06 Automatic Elect Lab Wireless extension telephone
US3210665A (en) * 1962-12-31 1965-10-05 Gen Electric Mobile radio with timing circuit for automatically energizing the transmitter upon receipt of a call
US3254159A (en) * 1962-04-10 1966-05-31 Bio Tronics Res Inc Telephone adapter
US3267379A (en) * 1963-07-10 1966-08-16 Dan E Bloxsom Automatic radio telephone and signaling communication device
US3286184A (en) * 1963-09-11 1966-11-15 Western Electric Co Portable telephone system
US4468538A (en) * 1982-12-16 1984-08-28 Gte Automatic Electric Inc. Wireless telephone system with high level dial pulse signalling
US4469918A (en) * 1983-03-23 1984-09-04 Gte Automatic Electric Inc. Wireless telephone system with high level dial pulse signalling
US4471166A (en) * 1982-12-16 1984-09-11 Gte Automatic Electric Inc. Wireless telephone extension unit with high level dial pulse signalling

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564660A (en) * 1946-08-02 1951-08-21 Ollie J Allen Means for interconnecting radio and telephone systems
US2488153A (en) * 1947-03-04 1949-11-15 Jay D Wiener Portable telephone extension
US2508613A (en) * 1947-03-19 1950-05-23 Autophon Ag Arrangement for radio-telephone traffic through exchange between mobile stations andbetween such stations and a telephone network
US2523914A (en) * 1947-05-09 1950-09-26 Automatic Elect Lab Radiotelephone system
US2649539A (en) * 1948-02-21 1953-08-18 Bell Telephone Labor Inc Microwave carrier telephone system
US2536825A (en) * 1948-03-26 1951-01-02 Stromberg Carlson Co Multiplex telephony
US2616032A (en) * 1948-10-20 1952-10-28 Automatic Elect Lab Single channel mobile telephone system
US2530815A (en) * 1949-02-02 1950-11-21 Automatic Elect Lab Mobile radiotelephone system having a single channel and a single frequency
US2791692A (en) * 1952-06-20 1957-05-07 Jr Edward Theordore Kurtzner Pulse-beacon transmitter circuit
US2883521A (en) * 1952-10-23 1959-04-21 Motorola Inc Radio dispatching system for railroad use
US2907874A (en) * 1955-02-25 1959-10-06 Westinghouse Electric Corp Microwave communication system
US2894121A (en) * 1956-02-28 1959-07-07 Warrick D Morison Jr Radiotelephone system featuring switching circuit for portable radio transmitter andreceiver
US3065421A (en) * 1957-05-21 1962-11-20 John M Hart Radio-telephone communication system having means for automatic direct dispatch between mobile stations
US3193623A (en) * 1961-08-07 1965-07-06 Automatic Elect Lab Wireless extension telephone
US3254159A (en) * 1962-04-10 1966-05-31 Bio Tronics Res Inc Telephone adapter
US3210665A (en) * 1962-12-31 1965-10-05 Gen Electric Mobile radio with timing circuit for automatically energizing the transmitter upon receipt of a call
US3267379A (en) * 1963-07-10 1966-08-16 Dan E Bloxsom Automatic radio telephone and signaling communication device
US3286184A (en) * 1963-09-11 1966-11-15 Western Electric Co Portable telephone system
US4468538A (en) * 1982-12-16 1984-08-28 Gte Automatic Electric Inc. Wireless telephone system with high level dial pulse signalling
US4471166A (en) * 1982-12-16 1984-09-11 Gte Automatic Electric Inc. Wireless telephone extension unit with high level dial pulse signalling
US4469918A (en) * 1983-03-23 1984-09-04 Gte Automatic Electric Inc. Wireless telephone system with high level dial pulse signalling

Also Published As

Publication number Publication date
BE408922A (enrdf_load_stackoverflow)

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