US1722007A - Sound-amplifying device for sound reproducing and recording instruments - Google Patents

Sound-amplifying device for sound reproducing and recording instruments Download PDF

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Publication number
US1722007A
US1722007A US96008A US9600826A US1722007A US 1722007 A US1722007 A US 1722007A US 96008 A US96008 A US 96008A US 9600826 A US9600826 A US 9600826A US 1722007 A US1722007 A US 1722007A
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US
United States
Prior art keywords
sound
diaphragm
casing
gongs
base
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
US96008A
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English (en)
Inventor
O'donnell Patrick Shaughnessy
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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
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Application granted granted Critical
Publication of US1722007A publication Critical patent/US1722007A/en
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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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers

Definitions

  • This invention relates to, and has for its object the provision of improvements in, sound reproducing apparatus.
  • the invention consists broadly in the arrangemcnt according to which the vibrations of the sound to be reproduced are adapted to set up sympatheticvibrations in tuned gongs.
  • FIG. 1 is a side elevation of a loud speaker (particularly for use in connection with wireless apparatus) in accordance with the invention, the casing thereof and certain other parts being shown in section.
  • Figure 2 is an end elevation of the same looking from the left of Figure 1.
  • Figure 3 is a similar end elevation of all those parts to the right of line X-X of Figure 1, certain of the parts being shown in chain dotted lines.
  • FIG 4 is a side elevation of a detail.
  • the loud speaker therein illustrated comprises an electromagnet 1 the armature 2 of which is adapted to vibrate in accordance with the vibrations of the sound to be reproduced.
  • the vibrations of thiselectromagnet are adapted to be transa mitted' to a diaphragm 3 of conical shell formation through the medium of a transmission device which.
  • the armature'2 carries a cup 7 which con tains the other diamond 4.
  • A' gspring 6 is provided for with: respectto saidjsleeve in s ch. aiwgyit at; thediamond 5 is presseddown-upon thetliainonde.
  • the bracket 9 and the electromagnet 1 are both supported from a common base 10 which consists of a glass disc and is supported. in spaced relation from the back 11 of the loud speaker casing by means of four supporting feet 12 spaced around its circumferential periphery.
  • the electromagnet is mounted. to this base in the neighbourhood of its centre and'the bracket 9 is made in the form of asleeve 8.
  • the loud speaker casing is of cylindrical t formation the back 11 thereof thus being disc shape. mounted therewithin at spaced intervals around the circumferential wall of said casing a number of tuned gongs 13 each of which represents a definite musical note.
  • These gongs are of spiral type and are located as The front thereof is open and has shown in radial planes with respect to the cylindrical casing and with their mounting points nearest the open end of the casing. They are mounted to an annular base 14 extendingaround the inner periphery of the casing as shown.
  • the gongs are partly isolated from one another by means of baffle plates 15- also arranged in radial planes.
  • bafile plates come between the. outer halves only ofeach pair of the .gongs (i. e. the halves nearest the openend ofthe casing) and are formed so that they becamenarrower 'as theyappro'ach the. centre of thecasingjnear to which theyv terminate. .They: also are mounted to'said base 15 andat their inner ciprocably mounted in a sleeve 8 carried by'a ends carry anannulus 15.. l 1
  • the electromagnet 1 consists of a core .1 havingenergisable pole pieces 1" arranged one each side of the'armature 2 and adapted alternately to attract and repel the same.
  • the armature 2 is mounted to a somewhat resilient bridging piece 2 one end of which is rigidly mounted to the base 1 to which the core 1 is mounted and the otherend of which is mounted to said base in such away as to be adjustable with respect thereto in a vertical sense.
  • Such adjustment is adapted to be efl'ected by means'of an adjusting column passing through a hole in said base 10.
  • Thebase 1? is secured to the base 10 by means of a suitable cement.
  • T e cup 7 is made in one unit with the disc '17 and with a suitable screw 19 by which said.
  • Aloud speaker comprising a dia hragm for producing thesound waves, a puralityof tuned gongs mounted in the path which said sound waves are adapted to takevand baflie plates located between adjacent pairs of said gongs.
  • 'A 16 d speaker comprising a casing hav- 1 ing a sound wave exit, a sound wave producing diaphragm located within said casing, a plurality of tuned gongs of the spiral type mounted within said casing, said gong be disposed adjacent said sound wave exit an 1 in planes approximately radial with respect to the approximate axis of saidsound wave exit and battle plates located between adjacent pairs of said gongs in such a way as only partially to isolate said pairs of gongs.
  • Aloud speaker comprising a cylindrical casing having one end open to provide a sound wave exit, a sound wave producing diaphragm located within said casing, a plurality of tuned gongs of the spiral type mounted around the inner periphery of said casing in planes approximately radial with respect to the axis-thereof and baflle plates located between adjacent pairs of said gongs in such a way as only partially to isolate said pairs of Q 4.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Otolaryngology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
US96008A 1925-05-11 1926-03-19 Sound-amplifying device for sound reproducing and recording instruments Expired - Lifetime US1722007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1722007X 1925-05-11

Publications (1)

Publication Number Publication Date
US1722007A true US1722007A (en) 1929-07-23

Family

ID=10889181

Family Applications (3)

Application Number Title Priority Date Filing Date
US96009A Expired - Lifetime US1722008A (en) 1925-05-11 1926-03-19 Sound-reproducing apparatus
US96010A Expired - Lifetime US1730286A (en) 1925-05-11 1926-03-19 Sound-producing apparatus
US96008A Expired - Lifetime US1722007A (en) 1925-05-11 1926-03-19 Sound-amplifying device for sound reproducing and recording instruments

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US96009A Expired - Lifetime US1722008A (en) 1925-05-11 1926-03-19 Sound-reproducing apparatus
US96010A Expired - Lifetime US1730286A (en) 1925-05-11 1926-03-19 Sound-producing apparatus

Country Status (5)

Country Link
US (3) US1722008A (fr)
BE (3) BE335673A (fr)
DE (2) DE463897C (fr)
FR (3) FR613216A (fr)
GB (3) GB256677A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943412C (de) * 1951-06-13 1956-05-17 Elbau Elektrotechnik Aappbau Schutzkoerper fuer Schallstrahler
DE949406C (de) * 1953-06-07 1956-09-20 Wilhelm Silberkuhl Dipl Ing Tonschrank mit mehreren Lautsprechern, durch die Resonatoren angeregt werden
US3015366A (en) * 1956-12-14 1962-01-02 George M Bishop Speaker system

Also Published As

Publication number Publication date
FR613216A (fr) 1926-11-12
BE335673A (fr)
DE463897C (de) 1928-08-06
US1730286A (en) 1929-10-01
BE335674A (fr)
US1722008A (en) 1929-07-23
FR613218A (fr) 1926-11-12
BE335672A (fr)
GB261154A (en) 1926-11-18
GB259103A (en) 1926-10-07
DE463898C (de) 1928-08-06
GB256677A (en) 1926-08-11
FR613217A (fr) 1926-11-12

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