US1877992A - Energy-translating device - Google Patents

Energy-translating device Download PDF

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Publication number
US1877992A
US1877992A US480174A US48017430A US1877992A US 1877992 A US1877992 A US 1877992A US 480174 A US480174 A US 480174A US 48017430 A US48017430 A US 48017430A US 1877992 A US1877992 A US 1877992A
Authority
US
United States
Prior art keywords
diaphragm
energy
cone
translating device
sections
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
US480174A
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English (en)
Inventor
John D Seabert
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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
Priority to BE382496D priority Critical patent/BE382496A/xx
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US480174A priority patent/US1877992A/en
Application granted granted Critical
Publication of US1877992A publication Critical patent/US1877992A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges

Definitions

  • My invention relates to energy-translating current at audio frequencies. More particularly, my invention relates to speakers of the cone type and improvements therein for obtaining more efficient reproduction of sound waves.
  • the diaphragm element In the analysis of the operation of speakers of the cone type, more particularly, the diaphragm element, it has been found that, at the higher audio frequencies, the diaphragm does not vibrate as a piston but does vibrate in sections; that is, the Whole area of the diaphragm is noteffective, Whereas, for an eiiicient reproduction of low-frequency sounds,
  • one object of myinvention to provide means for extending the lowfrequency response of an energy-translating device. It is another object of my invention to provide means for producing a speaker capable of responding to frequencies of the order of '25cycles. r l
  • Another. object of my invention is to provide means, forcausing the diaphragm of a cone speaker to vibrate as a unit.
  • Figure I is a front View of my device ner, of associating the driving units with the diaphragm. l i
  • Fig. i is a view, in cross-section, along the line IV-JVof Fig. 1 p
  • Fig. 5 is a view,in cross-section, along the line VV. of Fig. 2.
  • the vibratory element 1 is shown as comprising a plurality of relatively small coneshaped sections 3, the edges-5 of which intersect in the form ofa portion of a hyperbola, as clearly illustrated in Figs. 4 and 5.
  • This particular construction functioning as trusses to resist distorting forces, adds materially to the strength and rigidity of the diaphragm.
  • the diaphragm is, accordingly, mounted on'a frame by means of a flexible edging of leather 7 or other suitable material.
  • an individual driving unit 9 Associated with each section, at the apex thereof, is an individual driving unit 9. These driving units are connected electrically from the same source of audio-frequency current and are so connected as to operate in '20 time phase, thereby causing the associated sections of the diaphragm to also operate in the same manner.
  • a frame or supportll maintained in spacedrelationship to the diaphragm by 26 means of a plurality of bracket arms 13, is employed as a mounting for supporting the driving units 9 in their respectivepositions withregard to their associated-diaphragm sections.
  • An energy-translating device comprising a vibratory element having a plurality of intersecting sections, the intersections being of such character :as .to resist distorting forces applied to the vibratory element.
  • the whole assemblage ' may be B mounted upon a stand 15', whereby it may be conveniently'moved from one place to another.
  • the above-described energy translator may be set into a bafile orhorn in accordance p with present practice in order to realize the full benefit of the device.
  • An energy-translating device comprising a vibratory element and means foractuating said element as a unit, said means comprising a plurality of independent driving units each associated with a section of said ing a vibratory element having a. plurality of. sections ⁇ of substantially cone-shape and driving means comprising a plurality of lndependent driving units associated with

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
US480174A 1930-09-06 1930-09-06 Energy-translating device Expired - Lifetime US1877992A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE382496D BE382496A (en(2012)) 1930-09-06
US480174A US1877992A (en) 1930-09-06 1930-09-06 Energy-translating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480174A US1877992A (en) 1930-09-06 1930-09-06 Energy-translating device

Publications (1)

Publication Number Publication Date
US1877992A true US1877992A (en) 1932-09-20

Family

ID=23906943

Family Applications (1)

Application Number Title Priority Date Filing Date
US480174A Expired - Lifetime US1877992A (en) 1930-09-06 1930-09-06 Energy-translating device

Country Status (2)

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US (1) US1877992A (en(2012))
BE (1) BE382496A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632055A (en) * 1949-04-18 1953-03-17 John E Parker Loud speaker system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632055A (en) * 1949-04-18 1953-03-17 John E Parker Loud speaker system

Also Published As

Publication number Publication date
BE382496A (en(2012))

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