or a Pianoforte and American Organ into one Instrument.
Year: 1886

page_text: Date of Application, 21st Apr., 1886.
Complete Left, 30th Dec., 1886.
Complete Accepted, 15th Apr., 1887.
or a Pianoforte and American Organ into one Instrument.
We OTTILIE BÖHMER of 153, Balls Pond Road Islington in the County of
Middlesex Widow and FERDINAND THURMER of Meissen in the Empire of Germany
Pianoforte Manufacturer do hereby declare the nature of this invention to be as
follows:-
Our invention has reference to a combined Musical Instrument comprising a
pianoforte and harmonium or pianoforte and American organ and our improvements
therein consist in the means to be employed in so connecting them that when the keys
of the instrument are touched the sound of either the pianoforte or the harmonium
separately or of both together can be produced at the will of the player.
We carry out our invention by providing means for throwing the hammers of the
pianoforte and the levers which open the "pallets" of the harmonium or American
Organ out of connexion with the keys of the instrument.
Below the keyboard of an ordinary pianoforte, by preference a "Cottage" pianoforte,
is hung a harmonium or American organ of ordinary construction. The mechanism
by which we throw the hammers of the pianoforte out of connexion with the keys of
the instrument is as follows:-
Behind the "action" of the pianoforte and in contact with the rods which strike the
fect of the hammers is placed a rod which has a small lateral motion towards the front
of the instrument. When this rod is moved towards the front it pushes forward these
rods out of connexion with the feet of the haminers so that when the keys of the
instrument are struck the hammers are not moved and so the pianoforte remains silent.
This forward motion of the rod may be produced by a bent lever fixed at one or both
ends or by other suitable means and is placed under the control of the player by an

page_text: ordinary harmonium stop or a foot pedal or a knee pedal or by other convenient
means.
27
The mechanism by which we throw the stems or levers which open the "pallets
of the harmonium or American organ out of connexion with the keys of the instrument
is as follows:-
::
The stems or levers are connected with the keys of the instrument in the usual way
by means of vertical rods or stickers or plungers. These vertical rods pass through
holes in a bar which has a small lateral motion towards the front or back of the
instrument. When this bar is moved each vertical rod is moved from its place under
the corresponding key of the instrument so that when the keys are struck the stems or
levers which open the "pallets" are not moved and the harmonium or American organ
remains silent.
The motion of the bar is placed under the control of the player by means of an
ordinary harmonium stop or a knee pedal or a foot pedal or by other convenient means.
The above description gives the arrangement which we prefer to adopt but it may
be varied in many details without departing from the principle of the invention.
Dated this 91st love of Anvil 1000
JOHN GREENFIELD,
37, Queen Victoria Street, London, E.C.,
Agent for Ottilie Böhmer
and Ferdinand Thürmer.
.

page_text: WHR
or a Pianoforte and American Organ into one Instrument.
We OTTILIE BÖHMER of 330 Essex Road Islington in the County of Middlesex
Widow and FERDINAND THURMER of Meissen in the Empire of Germany Pianoforte
Manufacturer do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
:-
Our invention has reference to a combined Musical Instrument comprising a
Pianoforte and Harmonium or pianoforte and American Organ and our improvements
therein consist in the means to be employed in so connecting them that when the keys
of the instrument are depressed the sound of either the pianoforte or the harmonium
separately or of both together can be produced at the will of the player.
We carry out our invention by providing means for throwing the hammers of the
pianoforte and the levers which open the pallets of the harmonium or American organ
out of connection with the keys of the instrument.
Below the keyboard of a check action pianoforte, by preference an upright
pianoforte, is hung a harmonium or American organ. The mechanism by which we
throw the hammers of the pianoforte out of connection with the keys of the instrument
is as follows :-
Behind the hoppers of the pianoforte and in contact with them is placed a horizontal
rod which has a small lateral motion towards the front of the instrument. When this
rod is moved towards the front of the instrument it pushes forward the hoppers out
of connection with the hammer butts so that when the keys of the instrument
are struck the hammers are not moved and the pianoforte remains silent. This
motion of the rod towards the front of the instrument may be produced by a bent lever
fixed at one or both ends or by other suitable means and is placed under the control
of the player by an ordinary harmonium stop or a foot pedal or a knee pedal or by
other convenient means. The mechanism by which we throw the stems or levers which
open the pallets of the harmonium or American organ out of connection with the keys
of the instrument is as follows:-
The stems or levers are connected, with the keys of the instrument by means of
vertical rods. These vertical rods pass through holes in a rail or bar which has a
small lateral motion towards the front or back of the instrument. When this rail is
moved each vertical rod is moved from its place under a pin projecting from, the
corresponding key of the instrument so that when the keys are struck the stems or
levers which open the pallets are not moved and the harmonium or American organ
remains silent. The motion of the bar is placed under the control of the player by
means of an ordinary harmonium stop or a knee pedal or a foot pedal or by other
convenient means. The arrangements which we prefer to adopt are shewn in the
accompanying drawings in which similar letters of reference indicate corresponding
parts.
Fig. I. is a front elevation of the instrument, the front board of the harmonium
being removed.
Fig. II. is a cross-section of the instrument shewing it arranged for producing the
sound of both pianoforte and harmonium together.

page_text: Fig. III. is a cross-section showing the pianoforte when the hammers are out of
connection with the keys of the instrument.
Fig. IV. is a cross-section shewing the harmonium when the lovers which open the
pallets are out of connection with the keys of the instrument.
Fig. V. shews the bent lever arrangement by which we prefer to produce the lateral
motion of the horizontal bar behind the hoppers of the pianoforte.
In Figs. II. and III. A is the horizontal rod behind the hoppers B of the pianoforte.
When in their normal position as shewn in Fig. II. the hoppers are in contact with the
hammer butts I; but when the rod A is moved forward to the position shewn in
Fig. III. the hoppers B are pushed forward as shewn out of contact with the hammer
butts I and when the keys of the instrument are touched the hammers are not moved
and the pianoforte remains silent.
Fig. V. shows the arrangement by which we prefer to produce the forward motion
of the rod A. At each end of the rod A is fitted a bent lever or crank C¹² of
iron pivoted at the angle C. The arm C² of this crank rests on the vertical rod D
which is supported by (though free to move through) the iron ring E. The lower
end of the rod D is attached to the end of the rod F, which is pivoted at F¹ G is
a wedge-shaped piece of wood fixed to the keyboard of the instrument. H is a
draw stop of thin brass having a piece of wood H³ screwed on its inner end. When
the stop His pushed in, its inner end slides up the face of G thereby raising the
rod and with it the rod D and the arm C of the crank. The rod A is thus
pushed forward into the position shown in Fig. III.
In Figs. I., II., and IV. K is the music box and L the wind chest of the
harmonium. Pins U project from the keys of the instrument through the keyboard.
Under each of these pins is a vertical rod V1 which rests on the corresponding
key X of the harmonium. Each of these vertical rods V₁ passes through a hole in
a horizontal bar or rail V' which may be moved towards the front or back of the
instrument as shown in Fig. IV. by the draw stop V³. In the position shewn in
Fig. II. when a key of the instrument is depressed it presses down the corresponding
rod V₁ and the corresponding key X of the harmonium thereby causing the
harmonium to sound, but when in the position shewn in Fig. IV. the rods Vi
not in contact with the pins U, so that when the keys of the instrument are
depressed the rods V are not pressed down and the harmonium remains silent.
The above description gives the arrangement which we prefer to adopt but it may
be varied in many details without departing from the principle of the invention.
are
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1. A combined musical instrument comprising a pianoforte and harmonium or
pianoforte and American organ constructed substantially as described.
2. A pianoforte made substantially as described.
3. A harmonium or American Organ made substantially as described.
4. The combination of the rod A with the action of a check action pianoforte
substantially as and for the purposes described.
5. The combination of the pins U, the vertical rods V₁ and the bar V2 with the
action of a harmonium or American organ substantially as and for the purposes
described.
Tad this of Daanwhee
JOHN GREENFIELD,
37, Queen Victoria Street, London, E.C.,
Agent for Ottilie Böhmer
and Ferdinand Thürmer.