GB227560A - Improvements in telephone receivers and the like - Google Patents

Improvements in telephone receivers and the like

Info

Publication number
GB227560A
GB227560A GB2800123A GB2800123A GB227560A GB 227560 A GB227560 A GB 227560A GB 2800123 A GB2800123 A GB 2800123A GB 2800123 A GB2800123 A GB 2800123A GB 227560 A GB227560 A GB 227560A
Authority
GB
United Kingdom
Prior art keywords
armature
diaphragm
magnets
casing
block
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
GB2800123A
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.)
LESLIE GEORGE TOPLIS
Original Assignee
LESLIE GEORGE TOPLIS
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 LESLIE GEORGE TOPLIS filed Critical LESLIE GEORGE TOPLIS
Priority to GB2800123A priority Critical patent/GB227560A/en
Publication of GB227560A publication Critical patent/GB227560A/en
Priority to FR594633D priority patent/FR594633A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

227,560. Toplis, L. G. Aug. 1, 1924. Magnetic instruments.-In telephone receivers of like sound recording or reproducing apparatus having magnets with North and South poles on each side of an armature or diaphragm, the similar poles of the two permanent, or constantly excited, magnets are disposed opposite each other, and the speech &c. carrying coils are wound so as to produce opposite effects on opposite sides of the diaphragm or armature. The diaphragm 6 may be clamped between the two halves 1. 2 of the casing, which are drawn together by a ring 7. The magnets 3, 13 may be spaced from the ends of the casing for adjustment purposes by washers 8, 18. An armature 6 may be connected by a rod 27 to a diaphragm 26, Fig. 4. The armature 6 may be attached at each end to a block 6<a>, Fig. 5, which may be adjusted to tighten the armature by means of a screw 6b attaching the block 6<a> to the casing 1.
GB2800123A 1924-08-01 1924-08-01 Improvements in telephone receivers and the like Expired GB227560A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2800123A GB227560A (en) 1924-08-01 1924-08-01 Improvements in telephone receivers and the like
FR594633D FR594633A (en) 1924-08-01 1925-03-06 Improvements in sound reproducing and recording devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2800123A GB227560A (en) 1924-08-01 1924-08-01 Improvements in telephone receivers and the like

Publications (1)

Publication Number Publication Date
GB227560A true GB227560A (en) 1925-01-22

Family

ID=10268671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2800123A Expired GB227560A (en) 1924-08-01 1924-08-01 Improvements in telephone receivers and the like

Country Status (2)

Country Link
FR (1) FR594633A (en)
GB (1) GB227560A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1895813A1 (en) 2006-08-28 2008-03-05 Technology Properties Limited Acoustic tranducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1895813A1 (en) 2006-08-28 2008-03-05 Technology Properties Limited Acoustic tranducer
US7577269B2 (en) 2006-08-28 2009-08-18 Technology Properties Limited Acoustic transducer

Also Published As

Publication number Publication date
FR594633A (en) 1925-09-16

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