US341263A - Telephone-transmitter - Google Patents
Telephone-transmitter Download PDFInfo
- Publication number
- US341263A US341263A US341263DA US341263A US 341263 A US341263 A US 341263A US 341263D A US341263D A US 341263DA US 341263 A US341263 A US 341263A
- Authority
- US
- United States
- Prior art keywords
- electrode
- transmitter
- telephone
- diaphragm
- telephonic
- 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
- 230000001702 transmitter Effects 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 101700080604 INVE Proteins 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003116 impacting Effects 0.000 description 2
Images
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
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Definitions
- My invention has relation to that form of telephonic transmitters wherein the pulsations or variations in the electric current are produced by varying the resistance or electric conductivity of carbon or like electrodes; and it has for its object the simplicity of construction and the arrangement of parts for obtaining an effective form of instrument, wherein the usual pressureregulating devices for the electrodes are dispensed with and the elec trodes themselves or their connections made to inherently or automatically adjust or regulate the pressure upon or between the elec trodes as the diaphragm vibrates inwardly and outwardly.
- My invention accordingly consists of a telephonic transmitter having a carbon block or electrode made in the form of a cog, ratchet, or other toothed wheel or roller arranged or disposed so that an inherent or self-adjusting gravity pressure is obtained between it and the remaining electrode, as hereinafter more particularly described and claimed.
- A represents any suitable form of boX or case having a door or hinged side, a, to which is suitably secured the diaphragm 13.
- a metal stud or bar Upon the inner face of the latter and at its center is fastened a metal stud or bar, 0, to the outer end of which is pivoted a metal link, D.
- a cog, ratchet, or other toothed wheel, E made of carbon or like material, to form an electrode, which, being pivotally supported, impinges by gravity upon a disk of carbon or electrode, E, rigidly afiixed, preferably in an inclined position, as shown, to the upper end of a metal bracket, E, suitably secured to hinged door or side (I.
- All of said metal bars, links, and brackets are preferably made of brass, but any other suitable material may be used.
- the toothed electrode E rides or moves up and down upon the fixed electrode E, or follows the vibrations of the diaphragm to antomatically or inherently increase the pressure between or upon said electrodes as the diaphragm moves inwardly and decrease such pressure as the diaphragm moves outwardly.
- the to-and-fro movement of electrode E it tends to and rotates upon the electrode E, to distribute the wear evenly upon all the teeth of the electrode F.
- the transmitter is placed in the line or battery circuit in the usual or other desired way.
- ⁇ Vhat I claim is- In a telephonic transmitter, the combination of diaphragm B, havingpivoted link D, provided at its outer or free end with a toothed electrode, E, a fixed inclined electrode, E, and circuit-connections with an electric battery or generator, substantially as shown and described.
Description
(No Model.)
J. F. McLAUGHLIN.
TELEPHONE TRANSMITTER.
No. 341,263. Patented May 4, 1886.
. INVE R/ ATTO Y UNITED STATES PATENT OFFICE.
JAMES F. MCLAUGHLIN, OE PHILADELPHIA, PENNSYLVANIA.
TELEPHONE-TRANSMITTER.
SPECIFICATION forming part of Letters Patent No. 341,263, dated May 4, 1886.
Application filed March 23, 1885. Serial No. 159,760. (No model.)
To aZl whom it may concern: I
Be it known that I, J AMES F. McLAUGH- LIN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Telephonic Transmitters, of which the following is a specification, reference being had therein to the accompanying drawing, which is a vertical longitudinal section of telephonic transmitter embodying my improvements.
My invention has relation to that form of telephonic transmitters wherein the pulsations or variations in the electric current are produced by varying the resistance or electric conductivity of carbon or like electrodes; and it has for its object the simplicity of construction and the arrangement of parts for obtaining an effective form of instrument, wherein the usual pressureregulating devices for the electrodes are dispensed with and the elec trodes themselves or their connections made to inherently or automatically adjust or regulate the pressure upon or between the elec trodes as the diaphragm vibrates inwardly and outwardly.
My invention accordingly consists of a telephonic transmitter having a carbon block or electrode made in the form of a cog, ratchet, or other toothed wheel or roller arranged or disposed so that an inherent or self-adjusting gravity pressure is obtained between it and the remaining electrode, as hereinafter more particularly described and claimed.
In the drawing, A represents any suitable form of boX or case having a door or hinged side, a, to which is suitably secured the diaphragm 13. Upon the inner face of the latter and at its center is fastened a metal stud or bar, 0, to the outer end of which is pivoted a metal link, D. In the end (I of link D is mounted a cog, ratchet, or other toothed wheel, E, made of carbon or like material, to form an electrode, which, being pivotally supported, impinges by gravity upon a disk of carbon or electrode, E, rigidly afiixed, preferably in an inclined position, as shown, to the upper end of a metal bracket, E, suitably secured to hinged door or side (I. All of said metal bars, links, and brackets are preferably made of brass, but any other suitable material may be used.
As the diaphragm moves inwardly and outwardly under the influence or" impacting sound waves, the toothed electrode E rides or moves up and down upon the fixed electrode E, or follows the vibrations of the diaphragm to antomatically or inherently increase the pressure between or upon said electrodes as the diaphragm moves inwardly and decrease such pressure as the diaphragm moves outwardly. During the to-and-fro movement of electrode E it tends to and rotates upon the electrode E, to distribute the wear evenly upon all the teeth of the electrode F.
The transmitter is placed in the line or battery circuit in the usual or other desired way.
\Vhat I claim is- In a telephonic transmitter, the combination of diaphragm B, havingpivoted link D, provided at its outer or free end with a toothed electrode, E, a fixed inclined electrode, E, and circuit-connections with an electric battery or generator, substantially as shown and described.
In testimony whereof I affix my signature in presence of two witnesses.
JAMES F. MoLAU-GHLIN.
Vitnesses:
JOHN Roncnns, S. J. VAN STAVOREN.
Publications (1)
Publication Number | Publication Date |
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US341263A true US341263A (en) | 1886-05-04 |
Family
ID=2410346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US341263D Expired - Lifetime US341263A (en) | Telephone-transmitter |
Country Status (1)
Country | Link |
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US (1) | US341263A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100111887A1 (en) * | 2008-04-25 | 2010-05-06 | L'oreal | Composition with a heating effect containing foaming surfactants |
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0
- US US341263D patent/US341263A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100111887A1 (en) * | 2008-04-25 | 2010-05-06 | L'oreal | Composition with a heating effect containing foaming surfactants |
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