GB260246A - Improvements in or relating to acoustic instruments - Google Patents

Improvements in or relating to acoustic instruments

Info

Publication number
GB260246A
GB260246A GB25616/26A GB2561626A GB260246A GB 260246 A GB260246 A GB 260246A GB 25616/26 A GB25616/26 A GB 25616/26A GB 2561626 A GB2561626 A GB 2561626A GB 260246 A GB260246 A GB 260246A
Authority
GB
United Kingdom
Prior art keywords
plate
relating
ear
layer
pneumatic cushion
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
GB25616/26A
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
Publication of GB260246A publication Critical patent/GB260246A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

260,246. Bloch, A. Oct. 26, 1925, [Convention date]. Hearing-appliances; stethoscopes.- To isolate desired sounds from parasitic noises a plate 1, covered by a layer of swansdown 7 and preferably oval or pear-shaped, which is connected to, or may be replaced by, a stethoscope or the like, is secured to a pneumatic cushion 4 surrounding the ear of the listener, so that the thickness of the layer of air between the plate and the ear can be adjusted to resonance with the desired sounds. The plate may slide within a similarlyshaped member 3 to which the pneumatic cushion is attached.
GB25616/26A 1925-10-26 1926-10-14 Improvements in or relating to acoustic instruments Expired GB260246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR260246X 1925-10-26

Publications (1)

Publication Number Publication Date
GB260246A true GB260246A (en) 1927-06-30

Family

ID=8884965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25616/26A Expired GB260246A (en) 1925-10-26 1926-10-14 Improvements in or relating to acoustic instruments

Country Status (1)

Country Link
GB (1) GB260246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447470A (en) * 1943-12-17 1948-08-17 Oxzyn Company Noise insulating ring for earphones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447470A (en) * 1943-12-17 1948-08-17 Oxzyn Company Noise insulating ring for earphones

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