GB261871A - Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus - Google Patents

Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus

Info

Publication number
GB261871A
GB261871A GB2302825A GB2302825A GB261871A GB 261871 A GB261871 A GB 261871A GB 2302825 A GB2302825 A GB 2302825A GB 2302825 A GB2302825 A GB 2302825A GB 261871 A GB261871 A GB 261871A
Authority
GB
United Kingdom
Prior art keywords
horns
relating
reproducing apparatus
wireless telephone
sound reproducing
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
GB2302825A
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.)
Johnson and Phillips Ltd
Original Assignee
Johnson and Phillips Ltd
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 Johnson and Phillips Ltd filed Critical Johnson and Phillips Ltd
Priority to GB2302825A priority Critical patent/GB261871A/en
Publication of GB261871A publication Critical patent/GB261871A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

261,871. Johnson & Phillips, Ltd., and Penney, J. R. Sept. 15, 1925. Loud-speakers.-A loud-speaker horn 4 has a detachable mouth-piece 4b which fits within themain portion and is secured by means of inclined bayonet slots 8 therein co-operating with studs 7 to form a tight joint. The loud speaker is supported on feet 5, 6, and the lowest part of the horn forms a dust-trap. Specifications 218,031, 218,753, and 219,070 are referred to.
GB2302825A 1925-09-15 1925-09-15 Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus Expired GB261871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2302825A GB261871A (en) 1925-09-15 1925-09-15 Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2302825A GB261871A (en) 1925-09-15 1925-09-15 Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus

Publications (1)

Publication Number Publication Date
GB261871A true GB261871A (en) 1926-12-02

Family

ID=10188943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2302825A Expired GB261871A (en) 1925-09-15 1925-09-15 Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB261871A (en)

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