GB244031A - Sound funnel for radio-telephony or other sound reproduction - Google Patents

Sound funnel for radio-telephony or other sound reproduction

Info

Publication number
GB244031A
GB244031A GB1996/25A GB199625A GB244031A GB 244031 A GB244031 A GB 244031A GB 1996/25 A GB1996/25 A GB 1996/25A GB 199625 A GB199625 A GB 199625A GB 244031 A GB244031 A GB 244031A
Authority
GB
United Kingdom
Prior art keywords
sound
telephony
radio
funnel
strips
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
GB1996/25A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB244031A publication Critical patent/GB244031A/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)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

244,031. Jorgensen, G. K. V. Dec. 2, 1924, [Convention date]. Wood tubes.-A sound-magnifying horn is built up of two superposed layers of wooden strips a, c, glued together, the inner layer being held together by a helically-wound steel wire b which cuts into the edges of the strips. The Specification as open to inspection under Sect. 91 (3) (a) states also that the same manufacturing process may be applied to tubular wooden articles. This subject-matter does not appear in the Specification as accepted,
GB1996/25A 1924-12-02 1925-01-22 Sound funnel for radio-telephony or other sound reproduction Expired GB244031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK244031X 1924-12-02

Publications (1)

Publication Number Publication Date
GB244031A true GB244031A (en) 1926-03-04

Family

ID=8150170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1996/25A Expired GB244031A (en) 1924-12-02 1925-01-22 Sound funnel for radio-telephony or other sound reproduction

Country Status (3)

Country Link
US (1) US1587587A (en)
CH (1) CH112424A (en)
GB (1) GB244031A (en)

Also Published As

Publication number Publication date
US1587587A (en) 1926-06-08
CH112424A (en) 1925-11-02

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