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DE568139C - Soundproof final telephone call - Google Patents

Soundproof final telephone call

Info

Publication number
DE568139C
DE568139C DEN31436D DEN0031436D DE568139C DE 568139 C DE568139 C DE 568139C DE N31436 D DEN31436 D DE N31436D DE N0031436 D DEN0031436 D DE N0031436D DE 568139 C DE568139 C DE 568139C
Authority
DE
Germany
Prior art keywords
soundproof
telephone call
background noise
final telephone
final
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEN31436D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAX NAUMANN DR
Original Assignee
MAX NAUMANN DR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE403504D priority Critical patent/BE403504A/xx
Application filed by MAX NAUMANN DR filed Critical MAX NAUMANN DR
Priority to DEN31436D priority patent/DE568139C/en
Application granted granted Critical
Publication of DE568139C publication Critical patent/DE568139C/en
Priority to DEN36487D priority patent/DE625198C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Description

Schalldicht abschließende Telefoneinsprache Es ist bereits bekannt, die Einsprache von Telefonen mit schalldichten Gehäusen zu versehen, welche unmittelbar an dem Mund des Sprechenden anliegen. Um den dumpfen Klang der in einen solchen Apparat gesandten Sprache im Empfangsapparat nach Möglichkeit zu mildern, hat man bereits Entlüftungsöffnungen am Gehäuse angeordnet. Wenn die Dumpfheit der Sprache jedoch so stark gemildert werden soll, daß die einwandfreie Verständigung nicht beeinträchtigt wird, ist es zweckmäßig, die Öffnungen so groß zu machen, daß jemand, der sich in der Nähe des Sprechenden befindet, bei absoluter Ruhe im Raume das Gespräch - wenn auch undeutlich - vernehmen kann. Um letzteres zu verhindern, ist es bisher nur bekannt, an die Entlüftungsöffnung einen längeren Schlauch anzuschließen und so den dort austretenden Schall unverständlich zu machen.Soundproof final telephone callback It is already known to provide the voice of telephones with soundproof housings, which immediately rest against the speaker's mouth. To the dull sound of in such a One has to soften the language sent to the apparatus in the receiving apparatus as far as possible already arranged vents on the housing. When the dullness of language however, it should be tempered to such an extent that perfect communication is not possible is affected, it is advisable to make the openings so large that someone who is in the vicinity of the speaker, the conversation in absolute quiet in the room - albeit indistinctly - can hear. To prevent the latter, it is so far only known to connect a longer hose to the vent and so to make the sound emitted there incomprehensible.

Die Erfindung sieht nun vor, statt dessen an der schalldichten Einsprache mit Entlüftungsöffnung oder in ihrer Nähe eine Vorrichtung zur Erzielung eines Nebengeräusches anzubringen.The invention now provides for the soundproof entry instead with a ventilation opening or in its vicinity a device to achieve a background noise to attach.

Die Gestaltung und Betätigung dieser Vorrichtung kann beliebig sein. Es ist denkbar, daß sie von Hand aus angetrieben wird oder mechanisch, indem beispielsweise nach Aufziehen eines Federwerkes .ein Klöppel leicht gegen einen Teil des Telefongehäuses anschlägt. Die Betätigung kann auch elektrisch, beispielsweise durch Anschluß an den Telefonstrom,erfolgen. Hier wäre dieAnbringung eines der bekannten elektrischen Summer denkbar.The design and operation of this device can be any. It is conceivable that it is driven by hand or mechanically, for example by after pulling up a spring mechanism. a clapper lightly against part of the telephone housing strikes. The actuation can also be electrical, for example by connection to the telephone stream. Here the attachment would be one of the known electrical ones Buzzer conceivable.

Claims (3)

PATENTANSPRÜCHE: i.. Schalldicht abschließende Telefoneinsprache, bei welcher der beim Sprechen durch eine Entlüftungsöffnung austretende Schall unverständlich gemacht wird, gekennzeichnet durch die Anordnung einer Vorrichtung zur Erzielung eines Nebengeräusches, die außen an der Einsprache oder in deren Nähe angebracht ist. PATENT CLAIMS: i .. soundproof final telephone objection, in which the sound exiting through a ventilation opening when speaking is incomprehensible is made, characterized by the arrangement of a device for achieving a background noise that is attached to the outside of the speech or in its vicinity is. 2. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß die Vorrichtung zur Erzielung des Nebengeräusches unmittelbar von Hand aus oder durch Ablaufen eines Uhrwerkes zu betätigen ist. 2. Arrangement according to claim i, characterized in that the device for Achieving the background noise directly by hand or by running a Movement is to be operated. 3. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß die Vorrichtung zur Erzielung des Nebengeräusches elektrisch zu betätigen ist, beispielsweise aus :einem Summer besteht.3. Arrangement according to claim i, characterized in that that the device to achieve the background noise can be operated electrically, for example: consists of a buzzer.
DEN31436D 1931-01-20 1931-01-20 Soundproof final telephone call Expired DE568139C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE403504D BE403504A (en) 1931-01-20
DEN31436D DE568139C (en) 1931-01-20 1931-01-20 Soundproof final telephone call
DEN36487D DE625198C (en) 1931-01-20 1934-03-20 Soundproof final telephone speech

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN31436D DE568139C (en) 1931-01-20 1931-01-20 Soundproof final telephone call

Publications (1)

Publication Number Publication Date
DE568139C true DE568139C (en) 1933-01-14

Family

ID=7345965

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN31436D Expired DE568139C (en) 1931-01-20 1931-01-20 Soundproof final telephone call

Country Status (2)

Country Link
BE (1) BE403504A (en)
DE (1) DE568139C (en)

Also Published As

Publication number Publication date
BE403504A (en)

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