Abstract A device for use by students of music which can be constructed very economically from two sheets of paper or other sheet material to provide the student with quick and easy identification of a root tone and the remaining scale tones and their relationships, including chords and chord inversions, upon his merely adjusting a slider on a holder which may be placed on the keyboard if desired. The fact that for both major and minor scales the intervals are fixed by convention makes it possible to make the slider measure off the intervals against a fixed chromatic scale for the various keys in either mood. Ordinarily the device will have at least two sliders, one for major and one for minor, but the same sliders or other sliders, in a set thereof, are provided with indicators pointing out scale degrees with chords and chord inversions as well as the simple scale tones and their intervals.
Sliderule apparatus comprising: an elongated holder being a single section of sheet material folded longitudinally in a collapsed M-fold providing an upwardly opening channel and two downwardly extending outer flaps (22, 24) having thereon chromatic scale representation of the tones in a portion of a piano keyboard including at least one octave; a similarly elongated panel slide having thereon interval indicators showing the pitch intervals between the tones of a diatonic scale; said panel slide being slidably adjustably mounted in said channel so that, with one of said indicators adjusted to display and point out one of said tones in said chromatic scale representation, the other indicators point out relationships of the remaining tones in said diatonic scale.
Claim 2
Dependent Claim
118 words
Sliderule apparatus comprising: an elongated holder being a single section of sheet material folded longitudinally in a collapsed M-fold providing an upwardly opening channel and two downwardly extending outer flaps (22, 24) having thereon chromatic scale representation of the tones in a portion of a piano keyboard including at least one octave; a similarly elongated panel slide having thereon interval indicators showing the pitch intervals between the tones of a diatonic scale; said panel slide being slidably adjustably mounted in said channel so that, with one of said indicators adjusted to display and point out one of said tones in said chromatic scale representation, the other indicators point out relationships of the remaining tones in said diatonic scale.
Claim 3
Dependent Claim
48 words
Sliderule apparatus according to claim 1 wherein said panel slide is invertible with different sets of said indicators, each set being on a longitudinal edge portion of the panel slide extending above the upper edge of said channel so that said sets are visable one at a time.
Claim 4
Dependent Claim
51 words
Sliderule apparatus according to claim 1 wherein said panel slide is reversible front to back with different sets of indicators with each set being on a longitudinal edge portion of the panel slide extending above the upper edge of said channel so that said sets are visable one at a time.
Claim 5
Dependent Claim
52 words
Sliderule apparatus according to claim 2 wherein said interval indicators have positionally associated therewith marked writing surfaces whereon students write in names of tones and/or chords, and said panel slides being constructed fron single strip sheets of paper so that it is economically feasible to use said panel slides as work sheets.