GB185294A - Improvements in sound transmitters - Google Patents

Improvements in sound transmitters

Info

Publication number
GB185294A
GB185294A GB1990821A GB1990821A GB185294A GB 185294 A GB185294 A GB 185294A GB 1990821 A GB1990821 A GB 1990821A GB 1990821 A GB1990821 A GB 1990821A GB 185294 A GB185294 A GB 185294A
Authority
GB
United Kingdom
Prior art keywords
mouthpiece
reflector
sound transmitters
transmitters
sound
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
GB1990821A
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 GB1990821A priority Critical patent/GB185294A/en
Priority to CH98921D priority patent/CH98921A/en
Publication of GB185294A publication Critical patent/GB185294A/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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

185,294. Watkins, F. A. July 25, 1921. Mouthpieces. - Relates to transmitters of the type having a hcllow reflector mounted in the mouthpiece, and consists in fastening-means for the mouthpiece and reflector. A ring member 12, which engages in an opening in the diaphragm housing, has a rib 15 which secures a parabolic reflector 16 with sound passages 23 and a retaining-clasp 19 into which the mouthpiece 10 is forced..
GB1990821A 1921-07-25 1921-07-25 Improvements in sound transmitters Expired GB185294A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1990821A GB185294A (en) 1921-07-25 1921-07-25 Improvements in sound transmitters
CH98921D CH98921A (en) 1921-07-25 1921-07-26 Sound transmitters for telephones.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1990821A GB185294A (en) 1921-07-25 1921-07-25 Improvements in sound transmitters

Publications (1)

Publication Number Publication Date
GB185294A true GB185294A (en) 1922-09-07

Family

ID=10137133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1990821A Expired GB185294A (en) 1921-07-25 1921-07-25 Improvements in sound transmitters

Country Status (2)

Country Link
CH (1) CH98921A (en)
GB (1) GB185294A (en)

Also Published As

Publication number Publication date
CH98921A (en) 1923-04-16

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