Music-Indicator. Page: 6 of 6
2 sheets, 4 p. : ill. ; 23 cm.View a full description of this patent.
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996,935
having openings therethrough for exposing
at any one time only those note designations
of the diatonic scale of the chosen signature,
said slide having imprinted thereon in line
5 with the staff on the body member, the bass
and treble staff lines with the letter desig-
nations on the lines and spaces of the staff.
8. In a device of the character described,
a body member having produced thereon a.
10 staff divided into a longitudinal series of
spaces agreeable to the successive white and
black keys of a keyboard, the staff lines con-
trasting with the spaces traversed thereby,
each space traversed by the staff and corre-
15 sponding to a white key having prominently
displayed therein the letter representing the
corresponding key and also the same letter
but of smaller size associated with the note
sign for the same key properly positioned on
20 the staff, and each black space having its
appropriate key designation displayed there-
in, a key finder scale at one end of the bodymember in line with said staff, said scale
comprising a single octave with a staff above
the key designations and containing key 25
signatures corresponding to the key desig-
nations, and a slide movable along the body
member in overlying relation thereto and
provided with passages exposing at any one
time only those spaces in the first nuned staff 30
containing designations of notes of the dia-
tonic scale of a chosen one of the signatures
of the key finder scale, the slide having
thereon differentiating indications designat-
ing chords of the diatonic-scale, said inclica- 35
tions being closely associated with the pas-
sages through the slide.
In testimony, that I claim the foregoing
as my own, I have hereto attxed my 1gna-
tare in the presence of two witnesses.
JAMES MACcMASTER.
Witnesses:
JoIN II. SICGEIS,
B. G. FOSTER.Copies of this patent may be obtained for five cents each, by addressing the " Commissioner of Patents,
Washington, D. C."A
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MacMaster, James. Music-Indicator., patent, July 4, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514416/m1/6/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.