GB260946A - Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like - Google Patents

Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like

Info

Publication number
GB260946A
GB260946A GB1732526A GB1732526A GB260946A GB 260946 A GB260946 A GB 260946A GB 1732526 A GB1732526 A GB 1732526A GB 1732526 A GB1732526 A GB 1732526A GB 260946 A GB260946 A GB 260946A
Authority
GB
United Kingdom
Prior art keywords
devices
sound recording
electromagnetic
reproducing
reproducing devices
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
GB1732526A
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.)
AT&T Corp
Original Assignee
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
Priority claimed from US66624A external-priority patent/US1709571A/en
Priority claimed from US111209A external-priority patent/US1628666A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB260946A publication Critical patent/GB260946A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
    • 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
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

260,946. Western Electric Co., Inc., (Assignees of Harrison, H. C.). Nov. 3, 1925, [Convention date]. Magnets.-The limbs of the permanent magnet of a telephone relay, sound reproducer or like instrument having a balanced armature are tapered, as shown, and are provided with inserts 21 of permalloy of reduced cross-section, the magnetic flux being thereby maintained more nearly constant.
GB1732526A 1925-11-03 1926-07-10 Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like Expired GB260946A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66624A US1709571A (en) 1925-11-03 1925-11-03 Electromechanical translating device
US111209A US1628666A (en) 1926-05-24 1926-05-24 Electromagnetic device

Publications (1)

Publication Number Publication Date
GB260946A true GB260946A (en) 1927-10-10

Family

ID=26746972

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1732526A Expired GB260946A (en) 1925-11-03 1926-07-10 Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like
GB366227A Expired GB271409A (en) 1925-11-03 1927-02-09 Improvements in electromagnetic devices, suitable for use in sound recording and reproducing devices and the like

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB366227A Expired GB271409A (en) 1925-11-03 1927-02-09 Improvements in electromagnetic devices, suitable for use in sound recording and reproducing devices and the like

Country Status (4)

Country Link
BE (1) BE335046A (en)
FR (2) FR620382A (en)
GB (2) GB260946A (en)
NL (1) NL22500C (en)

Also Published As

Publication number Publication date
GB271409A (en) 1927-10-27
FR620382A (en) 1927-04-21
FR32964E (en) 1928-06-06
BE335046A (en)
NL22500C (en)

Similar Documents

Publication Publication Date Title
US720621A (en) Apparatus for electromagnetically recording speech.
GB260946A (en) Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like
GB445935A (en) An improved sound reproducing device
GB354618A (en) Improvements in talking heads for electro-magnetic sound recording
GB334493A (en) Improvements in and relating to apparatus for producing sound
GB341531A (en) Loud speakers
GB233733A (en) Improvements in or relating to telephone instruments
GB254403A (en) Improvements in electromagnetic microphones or the like, adapted to be actuated by agramophone or like record
GB306044A (en) Improvements in and relating to sound reproducing apparatus
GB263478A (en) Loud speakers
GB276708A (en) Improvements in sound recorders and reproducers
GB335340A (en) Improvements in and relating to electrical sound reproducing and recording instruments and apparatus
GB273619A (en) Improvements in sound reproducing machines
GB235920A (en) Improvements in telephone receivers
GB300837A (en) Improvements in and connected with sound reproducing instruments
GB278406A (en) Improvements in or relating to loud-speaking telephonic receivers
GB322275A (en) Improvements in or relating to sound reproducing devices
GB315109A (en) Improvements relating to sound reproducing devices, such as loud speakers
GB260286A (en) Improvements in electro-magnetic units for operating the diaphragm of sound reproducing devices
GB414967A (en) Improvements relating to permanent magnets
GB194117A (en) Improvements in and relating to electromagnets
GB211826A (en) Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals
GB350748A (en) Improvements in sound reproducing and recording devices
GB272990A (en) Improvements in or relating to electro-magnetic apparatus for use with gramophones in conjunction with loud speaking telephonic apparatus
GB322813A (en) Improvements in or relating to electrical pick-ups and like reproducing or recordingdevices