US259782A - Fog-horn - Google Patents

Fog-horn Download PDF

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US259782A
US259782A US259782DA US259782A US 259782 A US259782 A US 259782A US 259782D A US259782D A US 259782DA US 259782 A US259782 A US 259782A
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horn
fog
base
vibrator
trumpet
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
    • G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air

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  • Fog-horns have been made with a vibrator or tongue of thin sheet metal resting against a hollow case, and these have been fastened into a circular base, from the edges of which base the trumpet-shaped tube projects. These fog-horns have been blown by a plunger acting within a sheet-metal tube. Toy musical instruments have been made with a harmonica with numerous notes upon a casing that is connected to the trumpet.
  • Fog-horns have been made of a whistle or horn attached to the flat end of a cylinder in which is a piston moved by a rack and pinion, and the horn has been screwed to the cylinder or to a mouthpiece; but the base of the vibrator has either been soldered directly to the horn or else there has been a double conical expanding chamber between the vibrator and the born.
  • foghorns of this character the primary vibrations from the tongue are not concentrated, and theair as it issues through the vibrator has to expand before it reaches the interior of the trumpet portion ofthe horn. Hence alarge portion of its resonant eii'ect is lost and the foghorn has an indistinct and muffled sound. This is particularly the ease in the ordinary foghorns used on sailing-vessels, and which are usually made of common sheet-tin.
  • My present invention relates to the combination, with the vibrating tongue and base, of a conical concentrator intervening between the base and the flaring horn or trumpet, whereby the primary atmospheric vibrations due to the tremulous movement of the tongue are concentrated upon the base of the trumpet and impart to the same a vibration which sets the air in motion, producing a loud distinct sound that can be heard a long distance in a fog.
  • Figure 1 is a longitudinal section of the fog-horn complete; and Fig. 2 is a section,in larger size, of the concentrator and mouth-piece.
  • the air-forcin g cylinder at is made of sheet metal, with a sheet-metal plunger, 1), around which, near the end, there is a winding of fibrous material to form a packing.
  • the plunger 1) is closed at the end, so as to act in expelling the air.
  • the cylinder at is contracted to the screw-coupling c, and there is a corresponding screw, (1, around the base of the primary vibrator 6, so that the two parts can be screwed together, or a mouth-piece, f, be screwed at the base d, when it is desired to blow the foghorn by the mouth, instead of using the airforcing cylinder and plunger.
  • the primary vibrator is made of the tongue 0, that lies fiat against the side of a hollow or trough-shaped case, t.
  • the ends of both the tongue and case pass through the base d.
  • the improved fog-horn composed of the air-forcing cylinder, a close-ended plunger, a screw-connection, a vibrator, a horn, and a conical concentrator between the base of the vibrator and the small end of the horn, substantially as set forth.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)

Description

P. TOPPEL.
FOG HORN.
(No Model.)
No. 259,782. Patented June 20, 1882.
UNITED STATES PATENT OFFICE.
PETER TOPPED, OF JERSEY CITY, ASSIGNOR TO ROBERT FOULDS, OF PASSAIU, NEW JERSEY.
FOG-HORN.
SPECIFICATION forming part of Letters Patent No, 259,782, dated June 20, 1882. Application filed January 16, 1882. (No model.)
To all whom it may concern Be it known that I, PETER TOPPEL, of J ersey City Heights, in the county of Hudson and State of New Jersey, have invented an Improvement in Fog-Horns, of which the followin g is a specification.
Fog-horns have been made with a vibrator or tongue of thin sheet metal resting against a hollow case, and these have been fastened into a circular base, from the edges of which base the trumpet-shaped tube projects. These fog-horns have been blown by a plunger acting within a sheet-metal tube. Toy musical instruments have been made with a harmonica with numerous notes upon a casing that is connected to the trumpet. Fog-horns have been made of a whistle or horn attached to the flat end of a cylinder in which is a piston moved by a rack and pinion, and the horn has been screwed to the cylinder or to a mouthpiece; but the base of the vibrator has either been soldered directly to the horn or else there has been a double conical expanding chamber between the vibrator and the born. In foghorns of this character the primary vibrations from the tongue are not concentrated, and theair as it issues through the vibrator has to expand before it reaches the interior of the trumpet portion ofthe horn. Hence alarge portion of its resonant eii'ect is lost and the foghorn has an indistinct and muffled sound. This is particularly the ease in the ordinary foghorns used on sailing-vessels, and which are usually made of common sheet-tin.
My present invention relates to the combination, with the vibrating tongue and base, of a conical concentrator intervening between the base and the flaring horn or trumpet, whereby the primary atmospheric vibrations due to the tremulous movement of the tongue are concentrated upon the base of the trumpet and impart to the same a vibration which sets the air in motion, producing a loud distinct sound that can be heard a long distance in a fog.
In the drawings, Figure 1 is a longitudinal section of the fog-horn complete; and Fig. 2 is a section,in larger size, of the concentrator and mouth-piece.
The air-forcin g cylinder at is made of sheet metal, with a sheet-metal plunger, 1), around which, near the end, there is a winding of fibrous material to form a packing. The plunger 1) is closed at the end, so as to act in expelling the air. The cylinder at is contracted to the screw-coupling c, and there is a corresponding screw, (1, around the base of the primary vibrator 6, so that the two parts can be screwed together, or a mouth-piece, f, be screwed at the base d, when it is desired to blow the foghorn by the mouth, instead of using the airforcing cylinder and plunger.
The primary vibrator is made of the tongue 0, that lies fiat against the side of a hollow or trough-shaped case, t. The ends of both the tongue and case pass through the base d.
Instead of attaching the born or trumpet direct-ly to the edges of the base d, as has heretofore been done, I introduce the conical concentrator 1 between the edges of the base and the trumpet, and the inner end of thetrumpet is reduced in size to correspond with the small end of the concentrator, and the two are soldered firmly together. The result of this construction is that the air which is set in vibration by the tongue acts directly at the apex of the trumpet and gives a distinct and musical sound that is adapted to be heard at a long distance.
I claim as my inventionl. The combination, with the fog born or trumpet and the vibrator, of a conical concentrator with its larger end soldered to the base of the vibrator and its smaller end to the small end of the horn, substantially as set forth.
2. The improved fog-horn, composed of the air-forcing cylinder, a close-ended plunger, a screw-connection, a vibrator, a horn, and a conical concentrator between the base of the vibrator and the small end of the horn, substantially as set forth.
Signed by me this 9th day of January, A. D. 1882.
PETER TOPPEL.
Witnesses:
Gno. T. PINcKNEY, WILLIAM G. Mortr.
US259782D Fog-horn Expired - Lifetime US259782A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790504A (en) * 1954-03-26 1957-04-30 Charles R Hooe Collapsible megaphone signalling device
US3490501A (en) * 1966-06-28 1970-01-20 Stokman Hans Multiple-use accessory notably for handling liquids
US5200932A (en) * 1992-01-17 1993-04-06 Ljung Bo H G Underwater audible signalling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790504A (en) * 1954-03-26 1957-04-30 Charles R Hooe Collapsible megaphone signalling device
US3490501A (en) * 1966-06-28 1970-01-20 Stokman Hans Multiple-use accessory notably for handling liquids
US5200932A (en) * 1992-01-17 1993-04-06 Ljung Bo H G Underwater audible signalling device

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