US252024A - Mechanical telephone - Google Patents
Mechanical telephone Download PDFInfo
- Publication number
- US252024A US252024A US252024DA US252024A US 252024 A US252024 A US 252024A US 252024D A US252024D A US 252024DA US 252024 A US252024 A US 252024A
- Authority
- US
- United States
- Prior art keywords
- diaphragms
- telephone
- wire
- sound
- air
- 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
- 210000000188 Diaphragm Anatomy 0.000 description 40
- 239000000203 mixture Substances 0.000 description 12
- 238000009432 framing Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 6
- 239000007799 cork Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 240000000218 Cannabis sativa Species 0.000 description 2
- 101710024788 HOMER1 Proteins 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 235000012765 hemp Nutrition 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
- 235000012766 marijuana Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
- A63H33/00—Other toys
- A63H33/30—Imitations of miscellaneous apparatus not otherwise provided for, e.g. telephones, weighing-machines, cash-registers
- A63H33/3016—Telephones
Definitions
- Figure 1 is avertical section of our improved telephone; Fig. .2, a front view of the same with the sound-collector and mouth-piece removed. Like letters refer to like parts in each figure.
- This invention relates to improvements in the class of telephones termed mechanical, in which the transmission of a sound-wave or tone depends entirely upon the vibration of the sound-wave conducted by wire or other substance.
- the object of our invention is the construction of a telephone in which the diaphragms can be rendered uniform in pitch and 3 5 vibration, and so arranged in position that the sound-wave, in its impact upon the diaphragms, is magnified or intensified in the transmitting and receiving instruments, thereby producing a clear and distinct repetition of sounds from 0 one instrument to the other.
- the letter A represents a' suitable box or casing, having at- 5 tached thereto the diaphragms a a, which are drawn intoa concavo-convex shape by means of the buttons e c, drawn together by screw-tap f on the conducting-wire u.
- These diaphragms are firmly secured at their outer rim or edge to theframingpp,said framingbeingheld in place by ends r and sidess of the box.
- the box, diaphragms, and frames form an air-chamber, B, and are provided with segmental blocks q, inserted above and below, to overcome sharp angles ofcorners to render the sound more smooth.
- the letter D represents a sound-collecting chamber, formed by the curved cover F and the diaphragm a, with its framing p, in which is inserted a mouth-piece, h, having a number of holes,j, in its surface, openinginto the soundohamber, as shown, and through which air-vi brationsaretransmitted tothe ear.
- the mouthpiece h converges with a hole over the button 6 on the diaphragm.
- the letterE represents an air-chamber formed by diaphragm a, and back of the box and sides s s r r.
- the letters d (1 represent corks or other insulating substances, through which the conducting-wire passes, and which serve to regulate the excessive vibration of thediaphragms and the twanging sound of the wire.
- the cork d also closes the chamber E, rendering it a dead-air chamber, the same as B when the valves are closed.
- the diaphragms are brought to the same degree of tension by the screw-top f, and being of the same size and texture and shape (concavo-convex) and on the same degree of tension, the vibration orimpact of sound upon one is taken u p by the other and transmitted by the conduetin g wire or cord to the otherinstrument.
- the air-chamber B In transmitting sounds the air-chamber B is closed, the air-chamber in the receiving-instrument being open, and vice versa.
- the air-chambers B and E both being closed when transmitting sounds and containing inert air, but subject to expansion and contraction by the impactof the sound-wave and alternation upon the diaphragms, the force or intensity of the wave is increased or magnified to an extent that a whisper at one instrument is heard in a clear and audible whisper at the other, though a long distance may intervene between the two instruments connected by a Wire or other conducting snbstance.
- the two telephones are brought in unison of vibration by using a straight conducting-wire between the same at a convenient distance and adjusting the diaphragms with the screw-tap until a clear and equal tone or wave length is received or given off by each.
- the diaphragms are made of parch m en t, skin, or other suitable material, and have a vibrating surface seven or eight inches (more or less) in diameter each. Diaphragms, however, can be made of metal, animal, or vegetable substances.
- the conducting-line may be made of copper, steel, or galvanized-iron wire, or hemp or linen cord.
- the double concavo-convex-shaped diaphragm of the same size, material, and texture and degree of tension,in combination with the conducting-wire, buttons, adjusting screw-tap, and insulating-cork, substantially as described.
- diaphragms a a and framing p with openings 27, forming the front and rear walls of an airehamber, substantially as set forth.
- the combination with the diaphragms a a and framing p, with openings i, of a valve-plate for opening or closing the openings in the framing p, substantially as and for the purpose set forth.
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
G-.-K. & E. 0. FARRINGTON.
(No Model.)
MEGHANIGAL TELEPHONE.
No. 252,024. Patented Jan. 10,1882.
N PETERS vh m umo m hen wmin gan. D4 0 UNITED STATES PATENT OFFICE.
GEORGE K. FARRINGTON AND HOMER. G. FARRINGTON, OF KIRKSVILLE, MISSOURI, ASSIGNORS OF ONE-THIRD TO BRADFORD S. POTTER, OF
SHIPPENSBURG, PENNSYLVANIA.
M ECHANICAL TELEPHONE.
SPECIFICATION forming part of Letters Patent No. 252,024, dated. January 10, 1882.
Application filed September 14, 1881. (No model.) I
To all whom it may concern Be it known that we, GEORGE K. FARRING- TON and HOMER G. FARRINGTON, citizens of theUnitedStates ot'America,residingat Kirksville, in the county of Adair and State of Missouri, have invented certain new and useful Improvements in Mechanical Telephones, of which the followingisaspecification,reference being bad therein to the accompanying drawings.
Figure 1 is avertical section of our improved telephone; Fig. .2, a front view of the same with the sound-collector and mouth-piece removed. Like letters refer to like parts in each figure. This invention relates to improvements in the class of telephones termed mechanical, in which the transmission of a sound-wave or tone depends entirely upon the vibration of the sound-wave conducted by wire or other substance.
It is a well-established fact in physics that if two tnning-tbrkshavingthesamepitch stand near each other and one be made to vibrate the other will vibrate also, giving forth the same 2 5 note or tone, because it responds readily to corresponding wave-lengths in the air; but ifthey have a different pitch or are not in unison and are placed in the same position and one be made to vibrate the other will not respond, because 0 it does not vibrate with the same wave as the air or sound wave that strikes upon it.
The object of our invention, therefore, is the construction of a telephone in which the diaphragms can be rendered uniform in pitch and 3 5 vibration, and so arranged in position that the sound-wave, in its impact upon the diaphragms, is magnified or intensified in the transmitting and receiving instruments, thereby producing a clear and distinct repetition of sounds from 0 one instrument to the other.
The nature of our invention will be herein described fully, and then pointed out in the claims.
In the annexed drawings, the letter A represents a' suitable box or casing, having at- 5 tached thereto the diaphragms a a, which are drawn intoa concavo-convex shape by means of the buttons e c, drawn together by screw-tap f on the conducting-wire u. These diaphragms are firmly secured at their outer rim or edge to theframingpp,said framingbeingheld in place by ends r and sidess of the box. The box, diaphragms, and frames form an air-chamber, B, and are provided with segmental blocks q, inserted above and below, to overcome sharp angles ofcorners to render the sound more smooth.
The letter D represents a sound-collecting chamber, formed by the curved cover F and the diaphragm a, with its framing p, in which is inserted a mouth-piece, h, having a number of holes,j, in its surface, openinginto the soundohamber, as shown, and through which air-vi brationsaretransmitted tothe ear. The mouthpiece h converges with a hole over the button 6 on the diaphragm. There are also communicating openings '5 i from air-chamber B into sound-collectorchamberD, said opeuin gsibeing opened or closed by a circular valve or plate, as or, having counter-openings therein, as shown at k k In, Fig. 2, which are brought over the holes i i t at pleasure by moving the valve by the knob or projection, the valve turning on pins mm m m in slots 1 Z H.
The letterE represents an air-chamber formed by diaphragm a, and back of the box and sides s s r r.
The letters d (1 represent corks or other insulating substances, through which the conducting-wire passes, and which serve to regulate the excessive vibration of thediaphragms and the twanging sound of the wire. The cork d also closes the chamber E, rendering it a dead-air chamber, the same as B when the valves are closed.
The diaphragms are brought to the same degree of tension by the screw-top f, and being of the same size and texture and shape (concavo-convex) and on the same degree of tension, the vibration orimpact of sound upon one is taken u p by the other and transmitted by the conduetin g wire or cord to the otherinstrument.
In transmitting sounds the air-chamber B is closed, the air-chamber in the receiving-instrument being open, and vice versa. The air-chambers B and E both being closed when transmitting sounds and containing inert air, but subject to expansion and contraction by the impactof the sound-wave and alternation upon the diaphragms, the force or intensity of the wave is increased or magnified to an extent that a whisper at one instrument is heard in a clear and audible whisper at the other, though a long distance may intervene between the two instruments connected by a Wire or other conducting snbstance. The two telephones are brought in unison of vibration by using a straight conducting-wire between the same at a convenient distance and adjusting the diaphragms with the screw-tap until a clear and equal tone or wave length is received or given off by each.
The diaphragms are made of parch m en t, skin, or other suitable material, and have a vibrating surface seven or eight inches (more or less) in diameter each. Diaphragms, however, can be made of metal, animal, or vegetable substances.
The conducting-line may be made of copper, steel, or galvanized-iron wire, or hemp or linen cord.
Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-
1. In a telephone, the double concavo-convex-shaped diaphragm, of the same size, material, and texture and degree of tension,in combination with the conducting-wire, buttons, adjusting screw-tap, and insulating-cork, substantially as described.
2. In a telephone, the combination of the 252.02&
diaphragms a a and framing p, with openings 27, forming the front and rear walls of an airehamber, substantially as set forth.
3. In a telephone, the combination, with the diaphragms a a and framing p, with openings i, of a valve-plate for opening or closing the openings in the framing p, substantially as and for the purpose set forth.
4. In a telephone, the combination of the chambers D, B, and E, formed by the casing A, diaphragms a a, and curved cover F, substantially as shown and described.
5.- In a telephone, the combination, with the curved cover F, diaphragm a, and transmitting-wire, of the mouth-piece h, with its inner open end registering over the button 0 of the transmitting-wire, and provided with a plurality of openings,j.
6. The combination, in a telephone, of the curved cover F, mouth-piece h, diaphragm a, perforated framing p, sliding valve 00, diaphragm a, casing A, and transmitting-wire, substantially as described.
In testimony whereof we affix our signatures in presence of two witnesses.
GEORGE K. FARRINGTON. HOMER G. FARRINGTON.
Witnesses:
CHARLES STILL, HENRY W. ECKERT.
Publications (1)
Publication Number | Publication Date |
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US252024A true US252024A (en) | 1882-01-10 |
Family
ID=2321323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US252024D Expired - Lifetime US252024A (en) | Mechanical telephone |
Country Status (1)
Country | Link |
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US (1) | US252024A (en) |
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0
- US US252024D patent/US252024A/en not_active Expired - Lifetime
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