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roller 22,,, and in passing over the roller
22 U it slowly revolves it, thus causing it to
present clean and new contact-surfaces to
the ends of the contact fingers 23 whenever
they project through their respective per-
forations. Each finger 22 1 is connected by
the wire 23" and cj e to its respective magnet
9", which when energized by its finger con-
tacting with the roller, which acts as a
ground or general contact, its armature g b ,
carrying at its end the friction-shoe 8, is
drawn down and the friction-shoe thrown
into contact with the friction-roller 5 and
is carried forward thereby to the position
shown by the dotted lines, and at the same
time the striker-arm 12 is thrown up and
acts against the rear of the key 27, which
in turn actuates the strikers or hammers of
the piano in the usual way, each note being
prolongated according to the length of its
respective perforation or slot in the music-
paper; but immediately the finger comes
to the end of the perforation the paper in-
sulates it trom the roller, the magnet in-
stantly becomes demagnetized, its armature
9 h is drawn up by the spring n , and the
friction-shoe raised and allowed to fall back
into its normal position. The pedal-rods
30 31 are actuated in precisely the same
manner, it being necessary under the ar-
rangement shown to have the slots in the
paper which actuate the pedal magnets or
dampers much longer than those which act-
uate the note magnets.
It is obvious that the music-holder can
be set at any distance from the piano by
having a cable of wires run from it to the
piano.
Various modifications can be made in
the construction and arrangement of parts
herein shown without avoiding the spirit
of my invention.
What I claim is—•
'
' .
1. In an electrical piano, the combination
with a revolving roller or drum, of a fric-
tion-shoe pivoted above said roller and
adapted to be brought into contact there-
with, an electro-magnet arranged adjacent
to and having its armature connected with
the shoe, and a connection between the lat-
ter and the keys of a piano, substantially
as described.
2. In an electrical piano, the combina-
tion with a revolving roller or drum, of a
friction-shoe pivotally mounted above said
drum and provided with a rearwardly ex-
tending arm, an electro-magnet located in
front of and having its armature-lever con-
nected to the shoe, and a connection be-
tween the rearwardly extending arm and
the strikers or hammers of a piano, sub-
stantially as described.
3. In an electrical piano, the combina-
tion with a drum and means for revolving
the same, of a series of friction-shoes piv-
otally mounted above the drum and each
provided with a rearwardly extending arm,
a series of electro-magnets corresponding
to and arranged in front of the shoes, piv-
oted armature-levers connected to said
shoes and adapted when energized to bring
the latter into contact with the drum, and
a rod connecting each rearwardly extending
THE MUSIC TRADE REVIEW.
arm with the^keys or strikers of a piano,
substantially as described.
4. In an electrical piano, the combina-
tion with a revolving roller or drum, of a
series of friction- shoes pivotally mounted
above the drum and each provided with a
rearwardly extending arm which hap a con-
nection with the keys of the piano, a plural-
ity of electro-magnets arranged in front of
and having their armature-levers connected
to the shoes, a perforated music-sheet and
holder, and gearing intermediate the ro-
tary drum and music-sheet whereby the lat-
ter is advanced or fed during the rotation
of the drum, substantially as described.
5. In an electrical piano, the combination
with means for electrically operating the
keys, or a rotary note-sheet holder hinged
at one end to the piano and adapted to be
swung down out of position, and catches
secured to the piano and adapted to support
the sheet-holder in operative position, sub-
stantially as described.
6. In an electrical piano, the combina-
tion with a revolving drum, of a series of
friction-shoes pivotalJy mounted above the
drum and each provided with a rearwardly
extending arm having a connection with
the striker arms of the piano, a series of
electro-magnets arranged in front of and
having their armature-levers connected
with the shoes, a spring for normally
holding the armature-levers raised, and
means for limiting the upward movement
of the latter, substantially as described.
7. In an electrical piano, the combination
with a rotary drum, of a series of friction-
shoes pivoted above the drum and provided
with rearwardly extending arms having a
connection with the strikers of the piano, a
series of electro-mpgnets arranged in front
of said shoes and having their armature-
levers connected thereto, a music-sheet
holder having one end pivoted to the tinder
side of the piano keyboard and its other
end being detachably connected to the lat-
ter, a rotary contact roller carried by the
music-holder and over which the note
sheet passes, and a plurality of contact fin-
gers bearing upon said roller, as and for
the purpose described.
8. In an electrical piano, the combina-
tion with a rotary drum, of a series of fric-
tion-shoes pivotally [mounted above the
latter and provided with rearwardly ex-
tending arms having a connection with the
keys of the piano, an angle-bar mounted
in front of said shoes, a series of magnets
arranged upon said angle-bar and having
their armature levers connected with the
shoes, a contact roller having electric con-
nection with the magnets, a note sheet,
and electrically connected contact fingers
bearing upon said roller, substantially as
described.
9. In an electrical piano, the combina-
tion with a rotary drum, of an electric mo-
tor for imparting motion thereto, a series
of friction-shoes pivotally mounted above
the drum and having rearwardly extending
arms which are connected to the strikers
of the piano, an angle-plate mounted in
front of the shoes, a series of electro-mag-
nets mounted upon the angle-plate and pro-
ii
Attorneys.
vided with adjustably arranged armature-
levers which are connected at their for-
ward ends to the shoes, a note-sheet holder
hinged at one end to the piano and having
its other end detachably connected thereto,
a pair of rotary- note cylinders mounted
upon the holder, an intermediate rotary
contact roller, contact fingers adapted to
bear upon said roller, and a belt and pulleys
arranged between one of said rotary note
cylinders and the rotary drum whereby the
rotary movement of the latter will be im-
parted to the former, substantially as de-
scribed.
In testimony whereof, I affix my signa-
ture in presence of two witnesses.
GEORGE HOWLETT DAVIS.
Witnesses: ISAAC H. HUNTER,
RICH. T. NEWTON.
To Relieve Mr. Wheelock.
M. WRIGHT, president of the Man-
ufacturers' Piano Co., Chicago,
will hereafter divide his time between that
city and New York, hence will be able to
relieve Mr. Wheelock of much detail busi-
ness. The prospects for the Weber and
other instruments controlled by Mr. Wheel-
ock are bright, and the indications are that
there will be an unusually large fall busi-
ness.
A
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The Kroeger Piano Co.
T
HE Kroeger Piano Co., 524-32 East
134th street, have been compelled to
enlarge their working forces, owing to the
demand for their instruments. The pros-
pects for a large business the coming sea-
son are unusually bright. The)- have re-
ceived reports from different sections of
the country which justify them in this
opinion.