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GB334196A - Improvements in or relating to mouthpieces for telephone transmitters - Google Patents

Improvements in or relating to mouthpieces for telephone transmitters

Info

Publication number
GB334196A
GB334196A GB1254729A GB1254729A GB334196A GB 334196 A GB334196 A GB 334196A GB 1254729 A GB1254729 A GB 1254729A GB 1254729 A GB1254729 A GB 1254729A GB 334196 A GB334196 A GB 334196A
Authority
GB
United Kingdom
Prior art keywords
mouthpiece
cap
mouthpieces
relating
disc
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
GB1254729A
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 GB1254729A priority Critical patent/GB334196A/en
Publication of GB334196A publication Critical patent/GB334196A/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
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

334,196. Marr, A. April 23, 1929. Mouthpieces and attachments.-The mouthpiece 7 of a telephone transmitter has a removably fitted domed cap 8 provided with a constricted aperture 8a and a disc 10 is clamped between the mouthpiece and cap, the disc being provided near its periphery with a plurality of apertures 10a, the com. bined area of which is not less than that of the aperture 8a. The cap 8 may be secured by a ring nut 9 fitting on the mouthpiece as shown or the mouthpiece may be screw-threaded internally or externally to co-operate with a threaded portion on the cap 8.
GB1254729A 1929-04-23 1929-04-23 Improvements in or relating to mouthpieces for telephone transmitters Expired GB334196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1254729A GB334196A (en) 1929-04-23 1929-04-23 Improvements in or relating to mouthpieces for telephone transmitters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1254729A GB334196A (en) 1929-04-23 1929-04-23 Improvements in or relating to mouthpieces for telephone transmitters

Publications (1)

Publication Number Publication Date
GB334196A true GB334196A (en) 1930-08-25

Family

ID=10006630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1254729A Expired GB334196A (en) 1929-04-23 1929-04-23 Improvements in or relating to mouthpieces for telephone transmitters

Country Status (1)

Country Link
GB (1) GB334196A (en)

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