US378183A - Mechanical telephone - Google Patents
Mechanical telephone Download PDFInfo
- Publication number
- US378183A US378183A US378183DA US378183A US 378183 A US378183 A US 378183A US 378183D A US378183D A US 378183DA US 378183 A US378183 A US 378183A
- Authority
- US
- United States
- Prior art keywords
- diaphragm
- board
- drum
- base
- telephone
- 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
- 239000004744 fabric Substances 0.000 description 8
- 210000001699 lower leg Anatomy 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- 241001608519 Bursera fagaroides Species 0.000 description 2
- 239000004859 Copal Substances 0.000 description 2
- 241000333074 Eucalyptus occidentalis Species 0.000 description 2
- 210000000282 Nails Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000284 resting Effects 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
- Our invention relates to an improvement in acoustic telephones; and it consists in the pe culiar construction and combination of devices, that will be more fully set forth hereinafter, and more particularly pointed out in the claims.
- Figure l is a front elevation of an acoustic telephone embodying our improvements.
- Fig. 2 is a vertical central sectional view of the same.
- A represents a base-board, which is made of wo0d,and is circular in shape and provided with a central opening, B.
- the face and edges of the board are covered with velvet cloth, as at O, the said cloth having its edges drawn over and upon the rear side of the base-board, and secured thereto by means-of a circular sheet of tin, D, the latter having its edges secured to the base-board by means of headed nails E.
- F represents a pair of screws which extend through the base-board, one above and the other below the central opening, B, the function of the said screws being to secure thetelephone to a wall or other supporting object.
- a hook, G From the face of the lower side of the base-board projects a hook, G, from which is suspended a mallet, H, that is used for calling the operator at the distant station.
- I represents a circular drum which is made of sheetmetahpreferably of tin.
- a diaphragm, K which is made of linen or other suitable cloth, and has its edge secured to the sides of the drum by means of cords L,which are wound and tied tightly around the drum, so as to surround the edge of the diaphragm, as shown at Fig. 2.
- the outer side of the drum is then covered with velvet cloth, as at M.
- From the inner edge of the drum pro ject two or more securing-pins, N, which are adapted to enter corresponding openings made in the face of the base board, and whereby the drum and the diaphragm are secured centrally to the base-board.
- the space between the base-board and the diaphragm and inclosed by the drum constitutes an air-chamber with which the opening B communicates.
- 0 represents a button, the shank of which passes through an opening made in the center of the diaphragm, the button resting against the front side thereof.
- a wire,P is attached to the shank of the said button and is drawn ti ght-ly,so as to tightly stretch the diaphragm, and extends through the opening B, the other end of the said wire being attached to a similar button in the diaphragm of a companion acoustic telephone located at the distant station.
Description
' (No Model.) 8
N. B. S'T UBBLEFIELD & S. O. HOLGOMR, MECHANICAL TELEPHONE.
No. 378,183. Patented Feb. 21, 1888.
M; H M
p Hal a 8 8 v I WW I W TIG..Z. l7
. l; JL
mike Elem I UNITED STATES NATHAN B. STUBBLEFIELD PATENT OFFICE.
AND SAMUEL O. HOLCOMB, OF MURRAY,
KENTUCKY.
MECHANICAL TELEPHONE.
SPECIFICATION forming part of Letters Patent No. 3'78, 183, dated February 21,1888. Application filed February 19, 1887. Serial No. 228,231. (No model.)
To all whom it may concern.-
Be it known that WG,NATHAN B. STUBBLE- FIELD and SAMUEL C. HoLooMB, citizens of the United States, residing at Murray, in the county of Galloway and State of Kentucky, have invented a new and useful Improvement in Acoustic Telephones, of which the following is a specification.
Our invention relates to an improvement in acoustic telephones; and it consists in the pe culiar construction and combination of devices, that will be more fully set forth hereinafter, and more particularly pointed out in the claims.
In the drawings, Figure l is a front elevation of an acoustic telephone embodying our improvements. Fig. 2 is a vertical central sectional view of the same.
A represents a base-board, which is made of wo0d,and is circular in shape and provided with a central opening, B. The face and edges of the board are covered with velvet cloth, as at O, the said cloth having its edges drawn over and upon the rear side of the base-board, and secured thereto by means-of a circular sheet of tin, D, the latter having its edges secured to the base-board by means of headed nails E.
F represents a pair of screws which extend through the base-board, one above and the other below the central opening, B, the function of the said screws being to secure thetelephone to a wall or other supporting object. From the face of the lower side of the base-board projects a hook, G, from which is suspended a mallet, H, that is used for calling the operator at the distant station.
I represents a circular drum which is made of sheetmetahpreferably of tin. Over theouter side of the said drum is stretched a diaphragm, K, which is made of linen or other suitable cloth, and has its edge secured to the sides of the drum by means of cords L,which are wound and tied tightly around the drum, so as to surround the edge of the diaphragm, as shown at Fig. 2. The outer side of the drum is then covered with velvet cloth, as at M. From the inner edge of the drum pro ject two or more securing-pins, N, which are adapted to enter corresponding openings made in the face of the base board, and whereby the drum and the diaphragm are secured centrally to the base-board. The space between the base-board and the diaphragm and inclosed by the drum constitutes an air-chamber with which the opening B communicates.
0 represents a button, the shank of which passes through an opening made in the center of the diaphragm, the button resting against the front side thereof. A wire,P,is attached to the shank of the said button and is drawn ti ght-ly,so as to tightly stretch the diaphragm, and extends through the opening B, the other end of the said wire being attached to a similar button in the diaphragm of a companion acoustic telephone located at the distant station.
In order to obtain the best results, we coat the diaphragm with copal varnish on both sides, which varnish, after it is dry, contributes materially to the resilience of the diaphragm and increases its sensibility, thereby enabling it to vibrate with maximum amplitude and mobility. The outer side of the diaphragm is then gilded or bronzed.
The simplicity of the telephone will commend itself to the public,while its advantages for talking over crooked or crossed lines will be seen at once.
Having thus described our invention, we
claimthe eye of the button, substantially as described.
In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.
NATHAN B. STUBBLEFIELD. SAMUEL C. HOLOOMB. Witnesses:
OSCAR HOLT, B. B. LINN.
Publications (1)
Publication Number | Publication Date |
---|---|
US378183A true US378183A (en) | 1888-02-21 |
Family
ID=2447182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US378183D Expired - Lifetime US378183A (en) | Mechanical telephone |
Country Status (1)
Country | Link |
---|---|
US (1) | US378183A (en) |
-
0
- US US378183D patent/US378183A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US378183A (en) | Mechanical telephone | |
US406255A (en) | Picture-hanger | |
US336123A (en) | Meat-hook | |
US818421A (en) | Hat-hanger. | |
US323773A (en) | Jonathan | |
US355363A (en) | Mechanical telephone | |
US1354775A (en) | Fly-swatter | |
US324356A (en) | Acoustic telephone | |
US360005A (en) | Banjo | |
US357967A (en) | Ments | |
US364658A (en) | John c | |
US294238A (en) | Acoustic telephone | |
US1230521A (en) | Bracket. | |
US1057307A (en) | Rope-clamp. | |
US1010102A (en) | Garment-hanger. | |
US398490A (en) | Hanging device for clothes-lines | |
US998431A (en) | Toggle. | |
US622982A (en) | Clothes-drier | |
US927208A (en) | Broom-hanger. | |
US318611A (en) | Geobge st | |
US982111A (en) | Mail-tying device. | |
US1729233A (en) | Acoustic vibrator | |
US999282A (en) | Garment-hanger. | |
US1208989A (en) | Coat-hook. | |
US841907A (en) | Clothes-line reel. |