GB321612A - Improvements in micro-telephones - Google Patents

Improvements in micro-telephones

Info

Publication number
GB321612A
GB321612A GB295029A GB295029A GB321612A GB 321612 A GB321612 A GB 321612A GB 295029 A GB295029 A GB 295029A GB 295029 A GB295029 A GB 295029A GB 321612 A GB321612 A GB 321612A
Authority
GB
United Kingdom
Prior art keywords
microphone
casings
receiver
covers
clamped
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
GB295029A
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.)
Fuld & Co Telephon
Original Assignee
Fuld & Co Telephon
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 Fuld & Co Telephon filed Critical Fuld & Co Telephon
Priority to GB295029A priority Critical patent/GB321612A/en
Publication of GB321612A publication Critical patent/GB321612A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

321,612. Skerrett, H. N., (Fuld & Co. Telephon-und Telegraphenwerke Akt.-Ges., H.). Jan. 29, 1929. Hand - combination sets; earpieces; mouthpieces.-The covers 10, 11 of the receiver 3 and microphone 5 respectively of a micro-telephone, screw into the front of casings 6 and 7 and are so formed as to afford no grip for the hand. The covers can only be unscrewed by special tools, which fit the hexagonal opening 12 in the cover 10 and the slots 13 in the cover 11. The handle 1 and casings 2, 4 are formed in one piece, of insulating material, by squirting or pressing, and the walls 6 and 7 of these casings protrude beyond the receiver and microphone, which are flanged and clamped on to shoulders formed in the casing, by the covers 10 and 11. A ring 15 rest on another shoulder behind the microphone and carries contacts 16, 17, the latter being ring shaped at 20 and clamped between the microphone flange and its shoulder. A metallic tube 23 through the handle 1 is provided at either end with terminals 24, 25 and serves as one lead to the receiver, the other being an insulated wire passing through the tube.
GB295029A 1929-01-29 1929-01-29 Improvements in micro-telephones Expired GB321612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB295029A GB321612A (en) 1929-01-29 1929-01-29 Improvements in micro-telephones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB295029A GB321612A (en) 1929-01-29 1929-01-29 Improvements in micro-telephones

Publications (1)

Publication Number Publication Date
GB321612A true GB321612A (en) 1929-11-14

Family

ID=9749098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB295029A Expired GB321612A (en) 1929-01-29 1929-01-29 Improvements in micro-telephones

Country Status (1)

Country Link
GB (1) GB321612A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165419A (en) * 1984-09-29 1986-04-09 Toshiba Kk Loudspeaker construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165419A (en) * 1984-09-29 1986-04-09 Toshiba Kk Loudspeaker construction
US4623034A (en) * 1984-09-29 1986-11-18 Kabushiki Kaisha Toshiba Loudspeaker construction

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