GB421192A - Improvements in or relating to telephone or like receivers and to headbands therefor - Google Patents

Improvements in or relating to telephone or like receivers and to headbands therefor

Info

Publication number
GB421192A
GB421192A GB1732633A GB1732633A GB421192A GB 421192 A GB421192 A GB 421192A GB 1732633 A GB1732633 A GB 1732633A GB 1732633 A GB1732633 A GB 1732633A GB 421192 A GB421192 A GB 421192A
Authority
GB
United Kingdom
Prior art keywords
ring
limb
polepiece
wires
headband
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
GB1732633A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1732633A priority Critical patent/GB421192A/en
Publication of GB421192A publication Critical patent/GB421192A/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
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support

Abstract

421,192. Receivers; head-sets. STANDARD TELEPHONES & CABLES, Ltd., GRACE, B. B., and ROBERTON, J. S. P., 63, Aldwych, London. June 17, 1933, No. 17326. [Class 40 (iv)] [See also Group XXXVI] A telephone receiver, more particularly for use with wireless headphones, comprises an L - shaped magnetic member 4, part or all of which is permanently magnetized, a complete or incomplete ring 6 of magnetic material having a tongue 17 welded to one limb of the magnet so that the ring is parallel to the second magnet limb and a polepiece 5 welded to the end of the second limb so as to be parallel to the first limb and positioned centrally with respect to the ring. The polepiece is formed of a nickel-iron alloy as described in Specification 295,668, [Class 40 (iv)], and has an axial hole 21 drilled therein for about one-third of its length from the tip. An insulating strip 7 is threaded on the polepiece which also receives the coil 10 which is wound on thin ebonite cylinders without spool cheeks, the ends of the coil being taken to terminal members on the strip 7. These may comprise coiled springs 8, Fig. 2, in which the ends of the conductor leads are gripped, or spring clips, Fig. 3, each formed from two looped pieces of wire 18, 19. A paper ring and the usual diaphragm are retained on the ring 6 by an earpiece screwing on to casing 1. As shown in Fig. 1, the receiver is supported from the headband by a spring clip 3 the straight legs 12 of which pass through holes in the flanges of a member 13 of shallow channel cross section. The headband comprises two wires 14 covered with artificial leather 16, the ends of the wires being passed through further holes in the upper flange of member 13 and held in place by a rivet or eyelet 15. Instead of the wires 14 and member 13, a single piece of strip metal can be shaped as a headband, the ends being made of shallow channel cross section with the flanges drilled to take the legs 12 of the clip 13.
GB1732633A 1933-06-17 1933-06-17 Improvements in or relating to telephone or like receivers and to headbands therefor Expired GB421192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1732633A GB421192A (en) 1933-06-17 1933-06-17 Improvements in or relating to telephone or like receivers and to headbands therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1732633A GB421192A (en) 1933-06-17 1933-06-17 Improvements in or relating to telephone or like receivers and to headbands therefor

Publications (1)

Publication Number Publication Date
GB421192A true GB421192A (en) 1934-12-17

Family

ID=10093195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1732633A Expired GB421192A (en) 1933-06-17 1933-06-17 Improvements in or relating to telephone or like receivers and to headbands therefor

Country Status (1)

Country Link
GB (1) GB421192A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875233A (en) * 1987-10-16 1989-10-17 Derhaag Robert L Headset construction and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875233A (en) * 1987-10-16 1989-10-17 Derhaag Robert L Headset construction and method of making same

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