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GB237255A - Sound amplifying and reproducing device for talking machines and other sound reproducing instruments - Google Patents

Sound amplifying and reproducing device for talking machines and other sound reproducing instruments

Info

Publication number
GB237255A
GB237255A GB17983/25A GB1798325A GB237255A GB 237255 A GB237255 A GB 237255A GB 17983/25 A GB17983/25 A GB 17983/25A GB 1798325 A GB1798325 A GB 1798325A GB 237255 A GB237255 A GB 237255A
Authority
GB
United Kingdom
Prior art keywords
sound
reproducing
box
instruments
amplifier
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
GB17983/25A
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 GB237255A publication Critical patent/GB237255A/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
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Headphones And Earphones (AREA)

Abstract

237,255. Midence, A. July 18, 1924, [Convention date]. Horns, arranging and supporting.-A sound reproducing and amplifying device is constructed with a longitudinally collapsable light horn supported from a sound box and mounted at its small end on the outlet thereof. The amplifier is constructed in the form of flexible bellows 1, made from sheep skin preferably lined with parchment. The large end, the depth of which is preferably equal to the diameter of the soundbox, is secured to a frame 2, which is connected by bars of adjustable length to the sound-box 4 to permit of varying the length of the amplifier so as to vary the amplification and quality of the sound. As shown, two lazy-tong linkages 6 are pivoted to the frame. 2 and sound-box 4 respectively.
GB17983/25A 1924-07-18 1925-07-14 Sound amplifying and reproducing device for talking machines and other sound reproducing instruments Expired GB237255A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR237255X 1924-07-18

Publications (1)

Publication Number Publication Date
GB237255A true GB237255A (en) 1925-10-22

Family

ID=8882929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17983/25A Expired GB237255A (en) 1924-07-18 1925-07-14 Sound amplifying and reproducing device for talking machines and other sound reproducing instruments

Country Status (1)

Country Link
GB (1) GB237255A (en)

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