US1526254A - Sound-reflecting device for tauking machines - Google Patents
Sound-reflecting device for tauking machines Download PDFInfo
- Publication number
- US1526254A US1526254A US590423A US59042322A US1526254A US 1526254 A US1526254 A US 1526254A US 590423 A US590423 A US 590423A US 59042322 A US59042322 A US 59042322A US 1526254 A US1526254 A US 1526254A
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- US
- United States
- Prior art keywords
- sound
- reflector
- horn
- cabinet
- machines
- 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
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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
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Definitions
- This invention relates to a talking machine 01" the kind in which the sound is led by the tone arm into a motor cabinet and propagated from the latter by means of an angular, vertically disposed sound reflector.
- the object of the invention is to secure the greatest possible sound amplification concomitant with the restricted space available, and the invention consists in arranging the reflector on a sound board opposite a horn whose outer edges are deeply indented or scalloped so that, by placing the apex of the reflector close to the horn in two diametrically opposed indentations, the horn can be of substantial size whilethe indentations allow an undainped propagation of the sound.
- the horn is arranged so as to project diagonally from one corner of the cabinet, the reflector being arranged across the opposite corner.
- the horn may be of substantiall square crosssection and termed with one indentation at each side.
- Fig. l of the accompanying drawings represents a side view of the arrangement
- Fig. 2 a plan of the same.
- the motor cabinet 1 of the talking machine contains an angular, vertical reflector 6 which is arranged on a sound board 7 across one corner of the cabinet. Projecting diagonally from the opposite corner of the cabinet is a horn 3 which receives the sound from the tone arm :2 and emits the waves onto the reflector.
- the outer edges of the horn are deeply indented or scalloped, and the arrangement is such that the apex of the reflector is situated close to the horn in two diametrically opposed indentations.
- the horn is preferably of substantially square cross-section and formed with one indentation at each side.
- the reflector is placed in the indentations 4t of the hori zontal sides, while the indentations 5 of the vertical sides provide unobstructed passage for the sound waves.
- a talking machine cabinet of the character described the combination with an angular, vertical reflector arranged across one corner of the cabinet, of a sound board supporting said reflector, and a horn aranged so as to project diagonally from the opposite corner of the cabinet, the horn being provided with deeply indented outer edges and situated close to the reflector with the apex of the latter disposed in two diametrically opposed indentations.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
Feb. 0, 1925. 1,526,254
6. STlLLE SOUND REFLECTING DEVICE FOR TALKING MACHINES Filed Sept. 25- 192;
Patented Feb. 10, 1925.
GURT STILLE, OF BERLIN-ZEHLENBORF,
GERMANY, ASSIGNOR TO TELEGRAPHIE- GESELLSGH AFT MIT BESCHRANKTER HAFTUNG SYSTEM STILLE, OF BERLIN, GER- MANY.
SOUND-REFLECTITQT C- Application filed September 25, 1922.
To all whom it may concern:
Be it known that I, CURT STILLE, a citizen of the German Republic, residing at Berlin-Zehlendort, Germany, have invented certain new and useful Improvements in Sound-Reflecting Devices -for Talking Machines, of which the following is a specification.
This invention relates to a talking machine 01" the kind in which the sound is led by the tone arm into a motor cabinet and propagated from the latter by means of an angular, vertically disposed sound reflector.
The object of the invention is to secure the greatest possible sound amplification concomitant with the restricted space available, and the invention consists in arranging the reflector on a sound board opposite a horn whose outer edges are deeply indented or scalloped so that, by placing the apex of the reflector close to the horn in two diametrically opposed indentations, the horn can be of substantial size whilethe indentations allow an undainped propagation of the sound.
Preferably, in order to make the best possible use of the cabinet space, the horn is arranged so as to project diagonally from one corner of the cabinet, the reflector being arranged across the opposite corner. The horn may be of substantiall square crosssection and termed with one indentation at each side.
Fig. l of the accompanying drawings represents a side view of the arrangement, and
Fig. 2, a plan of the same.
The motor cabinet 1 of the talking machine contains an angular, vertical reflector 6 which is arranged on a sound board 7 across one corner of the cabinet. Projecting diagonally from the opposite corner of the cabinet is a horn 3 which receives the sound from the tone arm :2 and emits the waves onto the reflector. The outer edges of the horn are deeply indented or scalloped, and the arrangement is such that the apex of the reflector is situated close to the horn in two diametrically opposed indentations.
By arranging the reflector on a sound DEVICE FOR TALKING I'Y'EACEINES.
Serial No. 590,423.
board, its vibrations will be considerably amplified, and the relation of horn and reflector is such that the horn can be of substantial size without occupying too much space, while the indentations allow the sound waves to be propagated by the reflector without impedance and distortion.
The horn is preferably of substantially square cross-section and formed with one indentation at each side. The reflector is placed in the indentations 4t of the hori zontal sides, while the indentations 5 of the vertical sides provide unobstructed passage for the sound waves.
I claim:
1. In a talking machine cabinet oi the character described, the combination with an angular, vertical reflector, of a sound board supporting said reflector, and a horn having deeply indented outer edges and be ing situated close to the reflector with the apex of the latter disposed in two diametrically opposed indentations.
2. In a talking machine cabinet of the character described, the combination with an angular, vertical reflector arranged across one corner of the cabinet, of a sound board supporting said reflector, and a horn aranged so as to project diagonally from the opposite corner of the cabinet, the horn being provided with deeply indented outer edges and situated close to the reflector with the apex of the latter disposed in two diametrically opposed indentations.
3. In a talking machine cabinet of the character described, the combination with an angular, vertical r flector arranged across one corner of the cabinet, of a sound board supporting said reflector, and a horn of substantially square cross-section arranged so as to project diagonally from the opposite corner of the cabinet, each side of the horn being formed with a deep indentation in its outer edge, the reflector being arranged close to the horn with its apex in two diametrically opposed indentations.
CURT STILLE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US590423A US1526254A (en) | 1922-09-25 | 1922-09-25 | Sound-reflecting device for tauking machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US590423A US1526254A (en) | 1922-09-25 | 1922-09-25 | Sound-reflecting device for tauking machines |
Publications (1)
Publication Number | Publication Date |
---|---|
US1526254A true US1526254A (en) | 1925-02-10 |
Family
ID=24362211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US590423A Expired - Lifetime US1526254A (en) | 1922-09-25 | 1922-09-25 | Sound-reflecting device for tauking machines |
Country Status (1)
Country | Link |
---|---|
US (1) | US1526254A (en) |
-
1922
- 1922-09-25 US US590423A patent/US1526254A/en not_active Expired - Lifetime
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