US1716772A - Loud-speaker - Google Patents

Loud-speaker Download PDF

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Publication number
US1716772A
US1716772A US215543A US21554327A US1716772A US 1716772 A US1716772 A US 1716772A US 215543 A US215543 A US 215543A US 21554327 A US21554327 A US 21554327A US 1716772 A US1716772 A US 1716772A
Authority
US
United States
Prior art keywords
cone
diaphragm
periphery
plane surface
loud
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 - Lifetime
Application number
US215543A
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English (en)
Inventor
Gale Walter George
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
Application granted granted Critical
Publication of US1716772A publication Critical patent/US1716772A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Definitions

  • WALTER enonen GALE on .cAvEasirAM, NEAR "REA Ins, ENGLAND, AssrerioR T0 REGINALD IVESON nEnHAi/L'on Lennon, ENeLAivn LOUD-SPEAKER.
  • This invention relates to improvements in the construction of loud speaking telephone devices'known-asloudspeakeraas used in the reception of radio telegrapliyand telephony.
  • the invention is particularly applicable to loud speakers of the type having'the usual resilient armature and 'electro-magnetic system coupled with a diaphragm which if of conical shape, as is frequently the case, is tached to the a-rmatu-reat its apex.
  • the conical diaphragm of a loud speaker is supported by a number of resilient or flexible fingers or strips formed by making parallel or divergent cuts in the thickness of the plane surface or wall of the cabinet, so that the said fingers or strips are integral with such plane surface or wall and are coupled at or near their free ends to the base or periphery of the diaphragm,
  • the eferesaid plane may the p or both.
  • the flexible strips surface or frame employed to support. the electro magnetic systeni' such the inner'or outerwall of alc abinetror box or any Wall plaque or frame andthe diaphragm consists of a hollow cone of paper, anetal foil, "thin wood, silkor the likeior'a OOIfibiIlittiOIlsOf the like materials attached .in :the usual manner at a point :at .ornear the apexof the cone to the vibratory body, the periphery of the cone resting on the plane surface which isso cut or formed or built as to have a num 3 berof the resilient strips on which the pe .iplacedtoform outwardly radiating linqgers extending from .a point .atsor nearthe centre of the base of theIcone to theperiphery I of the cone.
  • the circumference of thefcone may, be strengthened by pleating or folding and the periphery of the cone may be attached to the flexible fingers by; any suitable means. In this manner the cone is suspended between the armature and the .fiexible strips and has no framework in contact with the conical, *surfaceand the flexibility of the said fingers diminishes the; effect of time lag previously referred to.
  • a rim or band of felt, cloth, rubber or the like may be fixedtothe periphery of the 1 cone or to the plane surface where contact with the cone is made or the periphery of the cone may be coated with hair orflock,
  • an adhesive, or felt or other material insmall pieces may be attached to the periphery of the cone or to the plane surface may be arranged in an ornamental design and that they may be formed in any manner other than radially extended from the centre.
  • Figure 1 is a plan of the member hereinbefore referred to as the plane surface seen the underside of Figure 2.
  • the cone 1 is attached to the sound post 5 at or near to the apex by suitable means, cone washers 11 and clamping nuts 12 being preferred as shewn in Figures 2 and 4 and the sound post 5 is attached in any appropriate manner to the armature or other Vibratory body.
  • the circumference of the cone may be strengthened by means of a rib or fold 9 in order to assist in maintaining circular shape.
  • the electro-magnetic system 3 may be housed between the plaque or member 7 and the cone 1 but may be also situated opposite the apex of the cone and outside the cone and where the electromagnetic system is housed as shown in the drawings the adjust ment means 6 may protrude.
  • Damping spacers of felt, wool or hair or thelike 4 may be placed between the cone 1 and the fingers 2, or the periphery'of the cone may be coated with flock or rest on a felt or the like band, or the dampingspacers 4 may be placed at intervals round the edge of thze cone or on the plane surface or member
  • the cone may be attached to the members 2 at any point but is preferably secured at the In Figures 2 and 1 the fingers areshown raised above the plane of the member 7 by reason of initial tension applied to the cone before securing the apex to the sound post 5 by means of nut-s 12 but this is not essential to the eflicient operation of the device. What I claim is e e 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
US215543A 1926-08-30 1927-08-26 Loud-speaker Expired - Lifetime US1716772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21316/26A GB279587A (en) 1926-08-30 1926-08-30 Improvements in loud speakers

Publications (1)

Publication Number Publication Date
US1716772A true US1716772A (en) 1929-06-11

Family

ID=10160805

Family Applications (1)

Application Number Title Priority Date Filing Date
US215543A Expired - Lifetime US1716772A (en) 1926-08-30 1927-08-26 Loud-speaker

Country Status (5)

Country Link
US (1) US1716772A (enrdf_load_stackoverflow)
DE (1) DE493182C (enrdf_load_stackoverflow)
FR (1) FR640227A (enrdf_load_stackoverflow)
GB (1) GB279587A (enrdf_load_stackoverflow)
NL (1) NL22552C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE493182C (de) 1930-03-05
FR640227A (fr) 1928-07-09
NL22552C (enrdf_load_stackoverflow)
GB279587A (en) 1927-11-03

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