GB224125A - Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus - Google Patents

Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus

Info

Publication number
GB224125A
GB224125A GB150124A GB150124A GB224125A GB 224125 A GB224125 A GB 224125A GB 150124 A GB150124 A GB 150124A GB 150124 A GB150124 A GB 150124A GB 224125 A GB224125 A GB 224125A
Authority
GB
United Kingdom
Prior art keywords
trumpets
horns
relating
reproducing apparatus
sound producing
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
GB150124A
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
Priority to GB150124A priority Critical patent/GB224125A/en
Publication of GB224125A publication Critical patent/GB224125A/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)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

224,125. Graham, E. A. Jan. 18, 1924. Drawings to Specification. Sound magnifying and directing appliances.- A loud-speaker &c. horn is lined, either throughout or over the narrower inlet portion only, with a hard smooth-surfaced enamel, whilst the outer surface and, if desired, the inner surface of the bell portion is coated with a rough-surfaced sound-deadening enamel.
GB150124A 1924-01-18 1924-01-18 Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus Expired GB224125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB150124A GB224125A (en) 1924-01-18 1924-01-18 Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB150124A GB224125A (en) 1924-01-18 1924-01-18 Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus

Publications (1)

Publication Number Publication Date
GB224125A true GB224125A (en) 1924-11-06

Family

ID=9723085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB150124A Expired GB224125A (en) 1924-01-18 1924-01-18 Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus

Country Status (1)

Country Link
GB (1) GB224125A (en)

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