US254190A - Telephone-transmitter - Google Patents
Telephone-transmitter Download PDFInfo
- Publication number
- US254190A US254190A US254190DA US254190A US 254190 A US254190 A US 254190A US 254190D A US254190D A US 254190DA US 254190 A US254190 A US 254190A
- Authority
- US
- United States
- Prior art keywords
- telephone
- transmitter
- conducting
- pellets
- berliner
- 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
- 239000008188 pellet Substances 0.000 description 8
- 229910001369 Brass Inorganic materials 0.000 description 6
- 239000010951 brass Substances 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 102100016838 AXIN2 Human genes 0.000 description 2
- 101700047552 AXIN2 Proteins 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001702 transmitter 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
- This invention relates to that class of telephone-transmitters in which a button or similar inclosed mass of conducting material is interposed in the circuit of an electric current, and by letting sound-waves act upon the said button cause undulations in the said current.
- My present invention consists in forming such buttons or masses of conducting pellets orglobules-as, for instance, lead shot of a fine grade or any such well-rounded particleswhich, when pressed together in the form of a button, will not, shift.
- buttons have been made previously of loose conducting particles-iron or brass filings, oral'so crushed carbon; but in all these instances the irregularity in the form of each particle caused them to shift under the influence of continuous Vibrations. To prevent this shiftin g isthe object of this invention.
- A is a metal diaphragm clamped in the usual manner between two blocks, B B, as in an ordinary telephone, and provided with a mouth-piece, G.
- D and E are brass blocks, connected to one another by an elastic tubing, F. This tubing is bound around the. brass blocks by wires or bands gg.
- the space between D and E is filled with conducting-globules, of metal or other material-such as shot or similar well-rounded particles, Gwhich will not shift.
- the block 'D is fixed to the diaphragm by a screw, d, and by means of conductorsp and n this transmitter can be inclosed in a telephonic circuit, in which case by speaking into the mouth-piece G the pressure between the conducting pellets or globules in the mass Gr is varied incorrespondence with each sound-wave according to well-known electrical laws.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
(No Model.)
E. BERLINER.
TELEPHONE TRANSMITTER.
Patented Feb. 28,1882.
EG f p u zmfaz' ,4 v
mus Photo-Ulhugnpher, Washington n. c.
UNITED STATES PATENT ()FFICE.
EMILE BERLINER, OF BOSTON, MASSACHUSETTS.
TELEPHONE-TRANSM ITTER.
SPECIFICATION forming part of Letters Patent No. 254,190, dated February 28, 1882. Applicationfiled December 15, 1 881. (No model.)
To all whom it may concern: Be it known that I, EMILE BERLINER, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Telephone-Transmitters, of which the following is a specification.
This invention relates to that class of telephone-transmitters in which a button or similar inclosed mass of conducting material is interposed in the circuit of an electric current, and by letting sound-waves act upon the said button cause undulations in the said current.
My present invention consists in forming such buttons or masses of conducting pellets orglobules-as, for instance, lead shot of a fine grade or any such well-rounded particleswhich, when pressed together in the form of a button, will not, shift.
I am aware that buttons have been made previously of loose conducting particles-iron or brass filings, oral'so crushed carbon; but in all these instances the irregularity in the form of each particle caused them to shift under the influence of continuous Vibrations. To prevent this shiftin g isthe object of this invention.
In the drawings, A is a metal diaphragm clamped in the usual manner between two blocks, B B, as in an ordinary telephone, and provided with a mouth-piece, G.
D and E are brass blocks, connected to one another by an elastic tubing, F. This tubing is bound around the. brass blocks by wires or bands gg. The space between D and E is filled with conducting-globules, of metal or other material-such as shot or similar well-rounded particles, Gwhich will not shift.
To the block E is fastened a square screw, J, which runs through the adjusting-nut H and frame K. By this arrangement the tubing F can be pulled out or pressed together, thereby adjusting the pressure with which the conductin g-pellets bear against one another.
The block 'D is fixed to the diaphragm by a screw, d, and by means of conductorsp and n this transmitter can be inclosed in a telephonic circuit, in which case by speaking into the mouth-piece G the pressure between the conducting pellets or globules in the mass Gr is varied incorrespondence with each sound-wave according to well-known electrical laws.
I am aware that pellets of conducting material arranged in a tube one ball behind the other have been used ere this, and this I do not claim as my invention; but
EMILE BERLINER.
Witnesses:
Gno. WILLIs PIERcn, J. H. CHEEVER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US254190A true US254190A (en) | 1882-02-28 |
Family
ID=2323486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US254190D Expired - Lifetime US254190A (en) | Telephone-transmitter |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US254190A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899657A (en) * | 1955-10-28 | 1959-08-11 | Multiple path coherer | |
| US20070008737A1 (en) * | 2005-07-06 | 2007-01-11 | Jenkins William T | Futuristic Christmas ornament |
-
0
- US US254190D patent/US254190A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899657A (en) * | 1955-10-28 | 1959-08-11 | Multiple path coherer | |
| US20070008737A1 (en) * | 2005-07-06 | 2007-01-11 | Jenkins William T | Futuristic Christmas ornament |
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