GB290031A - Improved means for recording and reproducing sounds in dictating machines - Google Patents

Improved means for recording and reproducing sounds in dictating machines

Info

Publication number
GB290031A
GB290031A GB1098627A GB1098627A GB290031A GB 290031 A GB290031 A GB 290031A GB 1098627 A GB1098627 A GB 1098627A GB 1098627 A GB1098627 A GB 1098627A GB 290031 A GB290031 A GB 290031A
Authority
GB
United Kingdom
Prior art keywords
recording
improved means
reproducing sounds
dictating machines
diaphragm
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
GB1098627A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1098627A priority Critical patent/GB290031A/en
Publication of GB290031A publication Critical patent/GB290031A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Stringed Musical Instruments (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

290,031. Sibley, J. E. Jan. 19, 1928, Diaphragms. - A sound diaphragm a of steel, mica, &c. is arranged behind the usual recording or reproducing diaphragm of a dictating machine and is diametrically supported on a wire b stretched by screws c, the diaphragm being otherwise free at its circumference.
GB1098627A 1928-01-19 1928-01-19 Improved means for recording and reproducing sounds in dictating machines Expired GB290031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1098627A GB290031A (en) 1928-01-19 1928-01-19 Improved means for recording and reproducing sounds in dictating machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1098627A GB290031A (en) 1928-01-19 1928-01-19 Improved means for recording and reproducing sounds in dictating machines

Publications (1)

Publication Number Publication Date
GB290031A true GB290031A (en) 1928-05-10

Family

ID=9977937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1098627A Expired GB290031A (en) 1928-01-19 1928-01-19 Improved means for recording and reproducing sounds in dictating machines

Country Status (1)

Country Link
GB (1) GB290031A (en)

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