US2382692A - Mechanical-electrical sound reproducer - Google Patents

Mechanical-electrical sound reproducer Download PDF

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Publication number
US2382692A
US2382692A US454871A US45487142A US2382692A US 2382692 A US2382692 A US 2382692A US 454871 A US454871 A US 454871A US 45487142 A US45487142 A US 45487142A US 2382692 A US2382692 A US 2382692A
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US
United States
Prior art keywords
mechanical
moving component
electrical sound
sound reproducer
sound
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
US454871A
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English (en)
Inventor
Courcy Georges
Durand Marcel Paul
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Individual
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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 US2382692A publication Critical patent/US2382692A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Definitions

  • the invention relates to a mechanical-electrical sound reproducer for phonographs.
  • plclr.ups magnet or crystal sound reproducers
  • Figure 1 is a sectional view of a reproducer the moving component of which is constituted by av diaphragm or blade capable of ilexing.
  • Figures 2 to 4 are views of reproducers in which the moving component. which is itself rigid, is articulated about knife-edges: ⁇ Figure 2 is an embodiment including a single modifier, Figure is an embodiment with two opposed modiers, Figure 4 is an embodiment with four opposed and balanced Figure. 5 is a variant oi Figure 4 in which the moving component is not articulated about knife-edges but merely held by the exible spirals -oi the modifiers.
  • I and 2 are the two portions ⁇ oi' the housing made of an insulating substance assembled by bolts 3; 5 is the needle which is rendered solid with moving component 6 by (Cl. HSL-100.41)
  • binding screw 1 means of binding screw 1; 8 are capsules of a resistant conducting substance such as agglomerated carbon, 9 are conical metal spirals the contacting surface of which, with 8, varies with the oscillating of 6 and on each of which the pressure can be adjusted by a cap I0 screwed into the housing.
  • a resistant conducting substance such as agglomerated carbon
  • the moving component is constituted by a exible blade or diaphragm squeezed between the two portions of the housing; in Figures 2 to 4 the moving component is solid and articulated about knife-edges II and I2 which are integral with thetwo portions of the housing; in Figure 5 the solid moving component is held by the exible spirals of the modilers.
  • the current to be modulated is led, on the one hand, to the moving component by wire I3 and, on the other hand, by wire I4 to cap I which is assumed to be conducting, both said components thus being in contact by-jmeans of the spiral 9 and capsule 8 forming a resistance.
  • a third wire I5 connects the second cap I0 to a compensated mounting (push-pull).
  • wire I4 leads to two caps I 0 diametrically opposed with respect to the centre of oscillationv of 6 whereas Wire I5 leads to the other two caps I0.
  • a mechanical electrical soundv reproducer for phonographs comprising a casing formed oi' two blocks of insulating material secured together and forming an opening between them, a stylus holder extending into said opening and a pluralityA sule.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Lubricants (AREA)
US454871A 1941-10-24 1942-08-14 Mechanical-electrical sound reproducer Expired - Lifetime US2382692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR879597T 1941-10-24

Publications (1)

Publication Number Publication Date
US2382692A true US2382692A (en) 1945-08-14

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ID=9361883

Family Applications (1)

Application Number Title Priority Date Filing Date
US454871A Expired - Lifetime US2382692A (en) 1941-10-24 1942-08-14 Mechanical-electrical sound reproducer

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US (1) US2382692A (en))
BE (1) BE447677A (en))
FR (1) FR879597A (en))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432066A (en) * 1945-04-26 1947-12-02 Well Surveys Inc Commutator design
US2542457A (en) * 1946-12-31 1951-02-20 Soundscriber Corp Electrodynamic pickup
US2566761A (en) * 1948-12-07 1951-09-04 Dubilier William Hearing aid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432066A (en) * 1945-04-26 1947-12-02 Well Surveys Inc Commutator design
US2542457A (en) * 1946-12-31 1951-02-20 Soundscriber Corp Electrodynamic pickup
US2566761A (en) * 1948-12-07 1951-09-04 Dubilier William Hearing aid

Also Published As

Publication number Publication date
BE447677A (en))
FR879597A (fr) 1943-02-26

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