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US 3,960,046 AGranted
Music teaching device
OwnerAlan Chong Seong Choonginventor
Life of this patent
Estimating the term…
Abstract
A music teaching device in which the musical scale is marked on a circular disc co-operable with a second disc bearing musical information the two discs being relatively rotatable about their centers to relatively align the scale markings with the information on the second disc.
Claims18
A music teaching device comprising:
- a first plate member having at least one separate indicium at each of 12 regions, which regions are spaced substantially at a common radius from a common center and are positioned at locations corresponding to 12 equiangular divisions spaced 30.degree. apart about the entire periphery of a circle defined about said center;
- indicia at first, third, fifth, sixth, eighth, 10th and 12th ones of the regions, counted in one direction about said center, including numerals indicating respective degrees of a major musical scale;
- a second plate member being provided having at least one separate indicium at each of 12 regions defined thereon, these regions being spaced substantially at a common radius from a common center and positioned at locations corresponding to 12 equiangular divisions spaced 30.degree. apart about the entire periphery of a circle defined about the said center of the second plate member;
- indicia on said second plate member at first, third, fifth, sixth, eighth, tenth and 12th regions, counted in the same direction as said one direction about said center of said second member, said indicia on said second plate member including alphabet letters respectively representing the notes of a C major scale beginning with the letter C;
- and
- pivot means securing said two plate members together allowing relative rotational movement between the members about a common axis passing through their respective centers.
3 more elements
A music teaching device comprising;
- a first plate member having at least one separate indicium at each of 12 regions, which regions are spaced substantially at a common radius from a common center and are positioned at locations corresponding to 12 equiangular divisions spaced 30.degree. apart about the entire periphery of a circle defined about said center;
- indicia at first, third, fifth, sixth, eighth, 10th and 12th ones of the regions, counted in one rotational direction about said center, including numerals indicating respective degrees of a major musical scale;
- a second plate member having at least one separate indicium at each of 12 regions, which regions are spaced substantially at a common radius from a common center and are positioned at locations corresponding to 12 equiangular divisions spaced 30.degree. apart about the entire periphery of a circle defined about the center of the second plate member including identifying marks at first, fifth and eighth of the regions thereon, counted in the same direction as said one direction, whereby to indicate the relative pitch intervals of notes in a major chord;
- and pivot means securing said two plates together allowing relative rotational movement between the members about a common axis passing through their respective centers.
1 more element
Dependencies are inferred from the claim text.