GB220675A - Improvements in or relating to cabinets for use with sound reproducing devices - Google Patents

Improvements in or relating to cabinets for use with sound reproducing devices

Info

Publication number
GB220675A
GB220675A GB797323A GB797323A GB220675A GB 220675 A GB220675 A GB 220675A GB 797323 A GB797323 A GB 797323A GB 797323 A GB797323 A GB 797323A GB 220675 A GB220675 A GB 220675A
Authority
GB
United Kingdom
Prior art keywords
cabinets
relating
sound reproducing
reproducing devices
receiving
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
GB797323A
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 GB797323A priority Critical patent/GB220675A/en
Publication of GB220675A publication Critical patent/GB220675A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

220,675. Graham, E. A. March 20, 1923. Receiving sets, construction of.-In a loudspeaking apparatus comprising a telephone receiver g and a sound-amplifying horn a arranged inside a cabinet d which may also contain other receiving apparatus, one side of the cabinet is formed as a sound-controlling cover j slidable by means of rods k, and the inner end of one of the rods controls a switch in the receiving or amplifying circuit so as to hold such circuit open when the, cover is completely closed. Specification 194,782, [Class 40 (ii), Phonographs], is referred to.
GB797323A 1923-03-20 1923-03-20 Improvements in or relating to cabinets for use with sound reproducing devices Expired GB220675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB797323A GB220675A (en) 1923-03-20 1923-03-20 Improvements in or relating to cabinets for use with sound reproducing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB797323A GB220675A (en) 1923-03-20 1923-03-20 Improvements in or relating to cabinets for use with sound reproducing devices

Publications (1)

Publication Number Publication Date
GB220675A true GB220675A (en) 1924-08-20

Family

ID=9843319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB797323A Expired GB220675A (en) 1923-03-20 1923-03-20 Improvements in or relating to cabinets for use with sound reproducing devices

Country Status (1)

Country Link
GB (1) GB220675A (en)

Similar Documents

Publication Publication Date Title
GB220675A (en) Improvements in or relating to cabinets for use with sound reproducing devices
GB496487A (en) Improvements in cabinets for sound reproducing instruments
GB238558A (en) Improvements in loud speaking telephones
CA243778A (en) Cabinet mechanism for combined radio and sound reproducer cabinets
GB230962A (en) Improved arrangement of wireless receiving apparatus
GB282127A (en) Improvements relating to sound reproducing apparatus
GB433304A (en) Improvements relating to cabinets for the storage of telephone instruments
GB329034A (en) Improvements in or relating to portable wireless sets
GB264602A (en) Improvements in and in the manufacture of horns
GB274689A (en) Improvements in and relating to sound amplifiers
GB320766A (en) Improvements in or connected with sound reproducers, musical instruments or the like
GB292414A (en) A speaking automaton
AU1302123A (en) An improved device for retaining the hinged lids of talking machine cabinets and the like in various positions
GB213083A (en) Improved horn for gramophones, wireless and like apparatus
GB230780A (en) Improvements relating to electromagnetic sound reproducers
GB237997A (en) Improvements in telephone receivers
GB227222A (en) Improvements in cabinets for wireless apparatus
GB320687A (en) Improvements in or relating to apparatus for the production and reception of electric signals including television apparatus and the like
GB297151A (en) Improvements in or relating to acoustic horns
CA6948S (en) Cabinet for loud speaker radio reproducer
AU782522A (en) Combination sideboard and cabinet sound-reproducing machine
AU2384225A (en) Improvements in or connected with loud speakers and other sound receiving, sound reproducing or sound transmitting apparatus
CA200354A (en) Phonograph cabinet and tone arm
GB369156A (en) Loudspeaker with electric talking machine and wireless set built therein
GB172562A (en) Improved cabinet talking machine