GB191325659A - Improvements in Telephone Repeaters. - Google Patents

Improvements in Telephone Repeaters.

Info

Publication number
GB191325659A
GB191325659A GB191325659DA GB191325659A GB 191325659 A GB191325659 A GB 191325659A GB 191325659D A GB191325659D A GB 191325659DA GB 191325659 A GB191325659 A GB 191325659A
Authority
GB
United Kingdom
Prior art keywords
microphone
core
screw
bearing
microphonic
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
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.)
Western Electric Co Ltd Great Britain
AT&T Corp
Original Assignee
Western Electric Co Ltd Great Britain
Western Electric Co Inc
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 Western Electric Co Ltd Great Britain, Western Electric Co Inc filed Critical Western Electric Co Ltd Great Britain
Application granted granted Critical
Publication of GB191325659A publication Critical patent/GB191325659A/en
Expired legal-status Critical Current

Links

Landscapes

  • Telephone Set Structure (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Transceivers (AREA)

Abstract

25,659. Western Electric Co., [Woodward, F. T., acting for Western Electric Co.]. Nov. 10. Telephonic relays.-A magneto-microphonic repeater, particularly applicable to wireless receiving-apparatus, is so constructed that the microphonic part may be easily replaced by one having a differently-tuned diaphragm. The magnet core is adjustable from the interior of the instrument. A cylindrical base 5 bearing connecting-screws is integral with a barrel 6 having within it the receiving-coil 12 and adjustable core 18. This core is screw-threaded at 19 and has a square end taking into a corresponding hole in the toothed disk 25, which meshes with a pinion 30 on the thumb-screw 32. By this means, the core 18 can be screw-adjusted vertically. The diaphragm 54 of the microphone is provided with a magnetic plunger 55, and is preferably made of gold-plated magnetic material. The microphone chamber has an insulating-lining 56 secured in place by a metal stud 57 with a flat top bearing a conical electrode 65 with an upturned edge 66. The circuit through this electrode is completed by way of the stud 57, which is connected with the pillar 71 on the terminal 37 by a flat spring 70. When the microphone is to be replaced, this spring can be turned aside and the part 50 bearing the microphone removed.
GB191325659D 1913-11-10 1913-11-10 Improvements in Telephone Repeaters. Expired GB191325659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191325659T 1913-11-10

Publications (1)

Publication Number Publication Date
GB191325659A true GB191325659A (en) 1914-07-23

Family

ID=32580459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191325659D Expired GB191325659A (en) 1913-11-10 1913-11-10 Improvements in Telephone Repeaters.

Country Status (1)

Country Link
GB (1) GB191325659A (en)

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