US1604532A - Electrodynamic telephone - Google Patents

Electrodynamic telephone Download PDF

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Publication number
US1604532A
US1604532A US713481A US71348124A US1604532A US 1604532 A US1604532 A US 1604532A US 713481 A US713481 A US 713481A US 71348124 A US71348124 A US 71348124A US 1604532 A US1604532 A US 1604532A
Authority
US
United States
Prior art keywords
diaphragm
ribs
telephone
electrodynamic
magnets
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 - Lifetime
Application number
US713481A
Other languages
English (en)
Inventor
Riegger Hans
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
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
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US1604532A publication Critical patent/US1604532A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane

Definitions

  • This invention relates to improvements in electrodynamic telephones, and has for its music and speech.
  • My invention consists essentially in providing upon the telephoneI diaphragm, which itself is not concerned in conducting electric currents and the magnetic flux, ribs through which the telephone currents flow and which ribs arc so disposed between'the pole-shoes of the exciter magnets that it is traversed by the magnetic ux.
  • the electric currents and the magnetic field then generate forces which are at right angles to the plane ofthe diaphragm. so that the diaphragm is vibrated.
  • it is possible to distribute such current carrying ribs all over the surface of a diaphragm it is possible to exert forces upon the diaphragm, which act fairly uniformly over the entire surface.
  • Fig. 2 a horizontal section along line A-B of Fig. 1,
  • Fig. 3 a modified construction in crosssection
  • Fig. 4 the same in horizontal section along line C-D of Fig. 3.
  • a sinuous rib 2 is fastened on the underside of the diaphragm 1, which may for instance, consist of mica.
  • This rib consists preferably of a strip of aluminium, in order 0 to keep the weight as low as possible.
  • the strip passes along between the magnetic poles 5 in such a manner, that each longitudinal rib is situthe coil tween t s 6.
  • the diaphragm is clamped behe frame 7 and the cover 8. A rush of current flowing through the aluminium strip produces at all points of the magnetic fields a force of equal size and equal direction, so that the diaphragm rises or falls along its entire extent.
  • the diaphragm may be made of any suitable size, so that in this manner a telephone capable of large volumes of sound is produced.
  • pole-shoe 21 across iron bridge 22, the pole-shoe 23 and the yoke 50.
  • the other magnetic field passes from the pole-shoe 24 across the bridge 25.
  • the ribs 12 to 17 As ed with the arrangement according 1 and 2 winding space for the electromagnets is saved by the present construction, so that ample space is available for the exciting coils 26.
  • the ribs are cemented to the diaphragm by means of bent over edges. In order to render the attachment more reliable parts of the edges of the strips may be passed through the diaphragm and bent over on the upper side of the diaphragm.
  • AWhat I claim as my invention and desire to secure by Letters Patent is l.
  • a non-conducting non-magnetic diaphragm a plurality of ribs of suitable material adapted to conduct the telephone currents, said ribs being distributed over the surface of said diaphragm and fixed to it, and means for producing a magnetic field, Whose lines of force cut said ribs in a transverse direction.
  • a non-conducting non-magnetic diaphragm a plurality of ribs of suitable material adapted to conduct the telephone currents, said ribs being distributed over the surface of said diaphragm and fixed to it, and magnets disposed adjacent to said diaphragm in suitable polarity sequence with relation to said ribs to cause similarly directed magnetic flux to transversely cross ribs traversed by the current in similar direction.
  • an electrodynamic telephone in combination a non-conducting non-magnetic diaphragm, a plurality of ribs of suitable material adapted to conduct ⁇ the telephone currents, said ribs being distributed over the surface of said diaphragm and fixed to it, and magnets for producing a magnetic field Whose lines of force cut said ribs in a transverse direction and a frame adapted to support and hold said diaphragm and pole shoes for said magnets connected with said frame to Jform a rigid unit therein.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)
US713481A 1923-06-08 1924-05-15 Electrodynamic telephone Expired - Lifetime US1604532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES63058D DE410114C (de) 1923-06-08 1923-06-08 Elektrodynamisches Telephon

Publications (1)

Publication Number Publication Date
US1604532A true US1604532A (en) 1926-10-26

Family

ID=27770804

Family Applications (1)

Application Number Title Priority Date Filing Date
US713481A Expired - Lifetime US1604532A (en) 1923-06-08 1924-05-15 Electrodynamic telephone

Country Status (6)

Country Link
US (1) US1604532A (de)
AT (1) AT103800B (de)
CH (1) CH109033A (de)
DE (1) DE410114C (de)
GB (1) GB217192A (de)
NL (1) NL15444C (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419608A (en) * 1935-05-29 1947-04-29 Submarine Signal Co Electrical oscillator
US2437085A (en) * 1943-03-12 1948-03-02 Rca Corp Heat detection device
US2444967A (en) * 1936-03-23 1948-07-13 Submarine Signal Co Oscillator
US2517565A (en) * 1939-01-21 1950-08-08 Harvey C Hayes Electrodynamic transceiver for transmission and reception of sound
US2789161A (en) * 1951-04-05 1957-04-16 Joseph B Brennan Loud-speakers
US2978669A (en) * 1954-03-08 1961-04-04 Harris Transducer Corp Underwater electrodynamic acoustic transducer with air-filled composite diaphragm
US2978671A (en) * 1951-08-11 1961-04-04 Harris Transducer Corp Electrodynamic transducer
US3018465A (en) * 1954-05-04 1962-01-23 Harris Transducer Corp Compliant acoustic radiating means
US3027541A (en) * 1951-08-11 1962-03-27 Harris Transducer Corp Structure for use in an electrodynamic transducer
US3066200A (en) * 1958-08-11 1962-11-27 William Ward Jackson Speaker device
US3164686A (en) * 1959-09-21 1965-01-05 Tibbetts Industries Electrodynamic transducer
US3171904A (en) * 1960-06-23 1965-03-02 Poutot Georges Robert Electrodynamic loud-speakers and microphones

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419608A (en) * 1935-05-29 1947-04-29 Submarine Signal Co Electrical oscillator
US2444967A (en) * 1936-03-23 1948-07-13 Submarine Signal Co Oscillator
US2517565A (en) * 1939-01-21 1950-08-08 Harvey C Hayes Electrodynamic transceiver for transmission and reception of sound
US2437085A (en) * 1943-03-12 1948-03-02 Rca Corp Heat detection device
US2789161A (en) * 1951-04-05 1957-04-16 Joseph B Brennan Loud-speakers
US2978671A (en) * 1951-08-11 1961-04-04 Harris Transducer Corp Electrodynamic transducer
US3027541A (en) * 1951-08-11 1962-03-27 Harris Transducer Corp Structure for use in an electrodynamic transducer
US2978669A (en) * 1954-03-08 1961-04-04 Harris Transducer Corp Underwater electrodynamic acoustic transducer with air-filled composite diaphragm
US3018465A (en) * 1954-05-04 1962-01-23 Harris Transducer Corp Compliant acoustic radiating means
US3066200A (en) * 1958-08-11 1962-11-27 William Ward Jackson Speaker device
US3164686A (en) * 1959-09-21 1965-01-05 Tibbetts Industries Electrodynamic transducer
US3171904A (en) * 1960-06-23 1965-03-02 Poutot Georges Robert Electrodynamic loud-speakers and microphones

Also Published As

Publication number Publication date
NL15444C (de)
AT103800B (de) 1926-07-26
GB217192A (en) 1924-09-11
CH109033A (de) 1925-05-16
DE410114C (de) 1925-02-26

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