[go: up one dir, main page]

FR532882A - Perfectionnements aux boîtes de résonance des machines parlantes - Google Patents

Perfectionnements aux boîtes de résonance des machines parlantes

Info

Publication number
FR532882A
FR532882A FR532882DA FR532882A FR 532882 A FR532882 A FR 532882A FR 532882D A FR532882D A FR 532882DA FR 532882 A FR532882 A FR 532882A
Authority
FR
France
Prior art keywords
resonance box
talking machine
machine resonance
talking
box
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
Other languages
English (en)
Inventor
George Hetherington
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 filed Critical
Application granted granted Critical
Publication of FR532882A publication Critical patent/FR532882A/fr
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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/50—Anvils or other supports opposing stylus forces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR532882D 1918-07-25 1921-03-29 Perfectionnements aux boîtes de résonance des machines parlantes Expired FR532882A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US246690A US1339337A (en) 1918-07-25 1918-07-25 Sound-box for talking-machines

Publications (1)

Publication Number Publication Date
FR532882A true FR532882A (fr) 1922-02-14

Family

ID=22931786

Family Applications (1)

Application Number Title Priority Date Filing Date
FR532882D Expired FR532882A (fr) 1918-07-25 1921-03-29 Perfectionnements aux boîtes de résonance des machines parlantes

Country Status (3)

Country Link
US (1) US1339337A (fr)
FR (1) FR532882A (fr)
GB (1) GB156134A (fr)

Also Published As

Publication number Publication date
US1339337A (en) 1920-05-04
GB156134A (en) 1922-02-23

Similar Documents

Publication Publication Date Title
FR532882A (fr) Perfectionnements aux boîtes de résonance des machines parlantes
FR497360A (fr) Perfectionnements aux machines à coudre
FR513218A (fr) Perfectionnements aux machines à tricoter
CH77597A (de) Dynamoelektrische Maschine
FR521224A (fr) Perfectionnements aux machines magnéto-électriques
FR500058A (fr) Perfectionnements aux enroulements pour machines dynamo-électriques
FR503070A (fr) Perfectionnements aux machines dynamo-électriques
FR500885A (fr) Boite de résonance pour machines parlantes
FR506210A (fr) Perfectionnements aux coussinets de machines
FR496303A (fr) Perfectionnements aux machines dynamo-électriques
CH83157A (de) Gießmaschine
FR505453A (fr) Support pour mitrailleuse-pistolet
FR20984E (fr) Machine magnéto-électrique
FR494078A (fr) Perfectionnements apportés aux cartons pour mécaniques jacquard
FR505367A (fr) Machine magnéto-électrique
FR490236A (fr) Machine à enlever les couvercles de boites
CH82317A (fr) Machine magnéto-électrique
FR516926A (fr) Machine parlante
CH80549A (de) Sprechmaschine
FR490088A (fr) Perfectionnements apportés aux machines pour fabriquer des bouteilles
CH80399A (de) Buttermaschine
FR501740A (fr) Perfectionnements apportés aux tabulateurs de machines enregistreuses
FR534469A (fr) Perfectionnements aux machines à tricoter
CH83491A (de) Nähmaschine
CH80684A (de) Nähmaschine