US1943884A - Ferromagnet system for converting electric oscillations into acoustic vibrations or conversely - Google Patents
Ferromagnet system for converting electric oscillations into acoustic vibrations or conversely Download PDFInfo
- Publication number
- US1943884A US1943884A US481128A US48112830A US1943884A US 1943884 A US1943884 A US 1943884A US 481128 A US481128 A US 481128A US 48112830 A US48112830 A US 48112830A US 1943884 A US1943884 A US 1943884A
- Authority
- US
- United States
- Prior art keywords
- spindle
- armature
- ferromagnet
- conversely
- acoustic vibrations
- 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
Links
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Definitions
- FIG. 175339 This invention has reference to a terromagnet ferromagnet system according to the invention, 7 system of devices for converting electric oscillaand tions into acoustic vibrations or conversely, such Figure 4 is a side view of this portion. as gramophones, loud speakers, microphones and Referring to Figures 1 and 2, the armature 4 is i the like. arranged between two magnets 1 and 2 of an elec- It has been proposed to damp the movement of tric pi p With p p c e a ature 4 the armature in the magnetic field of such syshas a pcrtion 5 W ch S rves as 1 holds!
- the coil is positioned so as to be influenced either According to the invention, for this purpose the by the lines of force mu h the armature or 30 ends of the spindle of the armature are arranged lines of force through e 01 both of the so as to be resilient in the direction of the axis. poles of the magnet System- Such a ge- In one embodiment of t invention th Spin ments of coils are well-known in the prior art and 11 is mounted between t springs which may do not require further description or illustrabe laminated if desired.
- the term transducer to avoid any undue amount of latitude of the aris u in s i its usual meaning to mature by wear of the ends of the spindle, the dslgnate y device takmg Power from one elec' Springs are provided with aper'tures m which the trical, acoustical or mechanical system and furconical ends of the spindle are journalled.
- the invention may be Clea-fly um cen er, an means or resi iently supporting said s indle for mo nen derstood and readily carried into effect some emg on1y Vex t the dlrecmon of Its bodiinents thereof will be described with refer-- A ferromagnetic Stem for a transducer ence to the accompanying drawing, in W comprising an armature, a rigid spindle forming 0 Flgllre 1 1s a bottom w of a f 01 a @911- the center of vibration of said armature. and
- a ferromagnetic system for a transducer ferent construction of an electric pick up with a comprising an armature, a rigid spindle rigidly Cir connected thereto, and means for supporting the ends of said spindle, said means permitting rotational and axial movement only of said spindle.
- a ferromagnetic system for a transducer comprising, an armature, a spindle forming the center of vibration therefor and flexible leaf springs cooperating with the ends of said spindle for permitting movement thereof in the direction of its axis.
- a transducer comprising a magnet system having .pole pieces, an armature adapted to be vibrated between said pole pieces, a spindle on which said armature is mounted, and thin, flat springs supporting the ends of said spindle in such a manner that the spindle is resiliently mounted in the direction of its axis.
- a transducer comprising a magnet system having pole pieces, an armature adapted .to be vibrated between said pole piece, a spindle on which said armature is mounted, a pair of thin, flat, flexible spring members each of which is mounted at at least one end and provided with an aperture in which an end of the'spindle is seated, said spring members mounting said spindle for flexible movement in the direction of its axis only.
- a transducer comprising a magnet system having pole pieces, an armature adapted to vibrate between said pole pieces, a spindle on whichsaid armature is mounted, a pair of thin, fiat spring members resiliently supporting said spindle for movement in the direction of its axis, and means for supporting each end of both of said spring members, said means being supported from said pole pieces.
- a ferromagnetic system for a transducer comprising an armature, a spindle on which said armature is mounted, and resilient means for supporting the ends-of the spindle, said means being resilient only in the direction of the longitudinal axis of the spindle.
- a ferromagnetic system as claimed in claim 8 in which the spindle ends are mounted between two flat, comparatively thin springs.
- a ferromagnetic system as claimed in claim 8 in which the spindle ends are mounted between springs provided with apertures in which the spindle ends are journaled.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Moving Of Heads (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL351805X | 1929-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1943884A true US1943884A (en) | 1934-01-16 |
Family
ID=19785066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US481128A Expired - Lifetime US1943884A (en) | 1929-09-19 | 1930-09-11 | Ferromagnet system for converting electric oscillations into acoustic vibrations or conversely |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1943884A (fr) |
| FR (1) | FR700686A (fr) |
| GB (1) | GB351805A (fr) |
-
1930
- 1930-08-14 FR FR700686D patent/FR700686A/fr not_active Expired
- 1930-08-16 GB GB24600/30A patent/GB351805A/en not_active Expired
- 1930-09-11 US US481128A patent/US1943884A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB351805A (en) | 1931-07-02 |
| FR700686A (fr) | 1931-03-05 |
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