Music-Indicator. Page: 3 of 6
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UNITED STATES PATENT OFFICE.
JAMES MAcMASTER, OF DALLAS, TEXAS, ASSIGNOR TO COLUMBIAN CONSERVATORY
OF MUSIC, OF DALLAS, TEXAS, A CORPORATIO Ni OF ARIZONA TERRITORY.
MUSIC-INDICATOR.Specification of letters Patent.
Patented July 4, 1911.
Application filed May 22, 1908. Serial No. 434,361.
To all whom it may concern:
Be it known that I, JAMEs AIAcMIASTER, a
citizen of the United States, residing at
Dallas, in the county of Dallas and State of
5 Texas, have invented a new and useful
Music-Indicator, of which the following is
a specification.
The present invention relates to means for
indicating on the key-board of a musical in-
10 strument, the meaning of the various desig-
nations employed in music, and for setting
forth clearly the relation between notes,
chords, and the like, as well as to indicate
the method employed in playing the same.
15 One of the principal objects of this inven-
tion is to provide a novel device of the above
character that is not only simple in struc-
ture, but one that can be readily under-
stood, thus making it particularly adaptable
20 for use in connection with instruction by
means of correspondence.
A further and .important object is to pro-
vide means that will clearly disclose to the
user the letter names of the different keys
25 of the key-board, the lines and spaces of the
bass and treble staffs which represent the
particular keys in each octave of the key-
board, the theory of the transposition of
the scale and chords, the alterations neces-
30 sary to effect such change and will designate
the keys of the key-board used in forming
the scales and chords used in each particular
key, the mechanism being such that the dif-
ferent designations not in use for any par-
35 ticular key or arrangement are not exposed,
thus materially avoiding confusion.
, The preferred form of construction is
illustrated in the accompanying drawings,
wherein
40 Figure 1 is a perspective view showing
the indicator applied to a key-board. Fig. 2
is a vertical cross sectional view through
the same. Fig. 3 is a detail cross sectional
view through the indicator showing the
45 same on an enlarged scale. Fig. 4 is a detail
sectional view on the line 4-4 of Fig. 3.
Fig. 5 is a front elevation of a portion of
the indicator showing the same on an en-
larged scale and with the slide in'a position
50 to play in six fiats. Fig. 6 is a front eleva-
tion of a portion of the supporting memn-her. Fig. 7 is a similar view of a portion, of
the slide.
Similar reference numerals designate cor-
responding parts in all the figures of the 55
drawings.
In the embodiment illustrated, a base or
supporting member is employed that is
formed of sheet metal substantially V-shaped
in cross section and comprising a front flange 60
S and a rear flange 9. The lower edge of
the front flange is arranged to rest upon the
black keys of a key-board, as is shown in Fig.
2, and therefore is provided with suitable
cushioning strips 10. The rear flange 9 is 65
arranged to engage behind the black keys,
and its lower edge is provided with cushion-
ing means 11. The said rear flange, as
shown more particularly in Fig. 4, has for-
wardly extending stop lips 12 cut therefrom, 70
which are covered with cushioning material
13, said lips being arranged to be placed on
opposite sides of certain of the black keys
of the key-board so as to prevent the longi-
tucdinal movement of the support. Said sup- 75
port when placed in position is thus held
against movement in a longitudinal or lat-
eral direction.
Upon one end portion of the outer face
of the front flange 8 is placed a key finder 80
scale 14 comprising a. series of sections equal
in number and width to the octave of a key-
board, the sections registering with the keys
of such octave and being colored in accord-
ance with such keys. Each section is more- 85
over provided with a letter which is the
designation of the key with which such sec-
tion is associated. Above this key finder
scale and really forming a part of it, is a
longitudinally disposed staff 15 on which 90
are placed the key signatures correspond-
ing to the key designations. Extending lon-
gitudinally of the remainder of the front
flange S is a staff 16 divided into sections 17
that register with the keys of the key-board 95
and are colored to correspond thereto. Each
section of this staff contains the designation
of the key it represents and on the staff in
each section appears the note head corre-
sponding to such key, said note head also 100
preferably having its designation located
therein, The section which registers with996,935.
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MacMaster, James. Music-Indicator., patent, July 4, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514416/m1/3/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.