Year: 1884

page_text: I, CARI PIETSCHMANN, a member of the firm of Ch. F. Pietschmann & Sons,
Musical Instruinent Makers, of N° 28 Brunnen Strasse, in the City of Berlin and
German Empire, seek leave to amend the specification of Letters Patent, No. 7756
of 1884, as shown in red ink in the copy of the original specification hereunto
annexed:-
My reasons for making this amendment are as follow, viz:-
The specification has been very badly translated from the German; hence
many errors exist therein which are liable to mislead the public. Moreover
I have ascertained that the subject matter of one of the claiming clauses was
not new at the date of my application.

page_text: I CARL PIETSCÍMANN a member of the firm of Ch: F. Pietschmann & Sons,
Musical Instrument Makers of No 28 Brunnen Strasse in the City of Berlin and
German Empire do hereby declare the nature of my Invention for "IMPROVEMENTS
IN BARREL ORGANS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
"
This invention relates to improvements in barrel organs in which the keys
rotate beneath a stationary or exchangeable note or music sheet or plate and
consists substantially in the employment of rotary perforated note or music sheets
in combination with devices which support the sheets or plates in such manner
that they offer sufficient resistance to the pegs or pins of the key-levers gliding
which slide beneath the same-a-slight-resistance them.
In-rotating During the rotation of the keys, the key-levers are held down and
the chambers or cells kept closed as long as the pins or pegs of the key-levers
glide-under slide beneath the men un-perforated parts of the note sheet, whereas
but the cells are opened as soon as the pins or pegs of the key-levers pass through
a perforations of in the note sheet.
The accompanying drawings show three modifications of this device. According
to In the arrangement modification represented in the Figures 1 and 2 the
stationary note sheet A is arranged on the lower side of the lid D of the barrel
organ, and this-later the said lid is provided with concentric ringe grooves or
recesses, the number and radius of which corresponds exactly with those of the
circles of perforations in the note sheet.
In order to eentre ensure the centricity of the exchangeable note sheets, the
shaft a, on which is fixed the rotary wind chest B with the keys, is fixed-enters
by-means-of-one-of-its-eenters-in-a extends at one end through a central opening
of in the note sheet, Figure 1. The shaft a is provided with a serew worm-wheel b
and is rotated from by the shaft by means through the medium of an endless
The shaft a is
screw or worш d which gears into with the screw worm-wheel b.
hollow and conducts compressed air from the bellows g and reserve bellows
the wind chest B.
to
The wind chest B (represented separately in Figure 4) consists of a parallope-
pedient parallelopipedic box or case which is one-sidedly attached near one of its
ends to the shaft and carries on its underside the tongues or reeds with their
chambers or cells and the valve levers m which can be arranged to rotate turn
around or about a common axis.
The ends of these levers are connected by means of the rods n with the keys a¹
which carry the pins or pegs o and are arranged on the upper side of the wind chest.
The pins o are guided by means of the grate like-device 2 which is (Figure 1)
attached to the wind chest B, and are continuously pressed against the lower surface
of the note sheet by means of a springs b¹ arranged between the lid of the wind
chest B and the keys a¹.

page_text: The positions of the pins o on the wind-chest corresponds exactly with the several
circles of perforations in the note sheet or with the circular grooves in the inferior
surface underside of the lid D, so that the pins o gliding-on (which during the
rotation of the wind-chest, slide upon the lower side of the note sheet) when the
windehest is rotated pass each time through an opening-or whenever they arrive
beneath the perforations of in the note sheet when-they--reach--the-same--and
penetrate with will by the action of the springs b¹ be caused to enter the said
perforations, their ends or points extending into the corresponding pin grooves
in the lid, and hereby-under-the-influence-of-the and the corresponding valves h¹
will be opened by the said springs b' and-by-means through the medium of the
rods n and levers m open the corresponding valve-h-and-cause-the; each reed to
produce-a-tone will therefore sound as long as the corresponding pin o projects
through a perforation in the musio sheet and until the said pin, by the continued
rotation of the wind chest, comes in contact with the edge of the perforation
or slot.
By reason of the resistance offered by the said edge, the said pin in question is
pressed down and the corresponding valve closed. The concentric rings-for--the
entrance-of-the-pins pin-grooves into the lid can be formed by a suitable shaping
machine or metallic rings can be let into or applied to the said lid.
It is evident that, in the arrangement above described the note sheet closes the
upper part of the organ and that the chief object of the lid is to form a bearing for
the said note sheet which said sheet is pressed upwards by means of the pins o.
It is evident from the foregoing evident description that the lid acts only--in
such-part as a support or bearing surface where the keys, -are-arranged con-
sequently the only at that part thereof immediately over the keys, therefore this
support or resisting surface can have the form of a grooved segment, which moves
above the upper surface of the note sheet, over the keys or pins and simultaneously
with the said keys or their pins as the said pins of the keys glide slide along the
lower surface of the said note sheet.
In order to prevent the bending or distortion of the note sheet and to attaių
ensure a dust tight closure to of the case, I arrange a disc or plate D on the axle
shaft a, Figure 3, which said disc rotates with the axle said shaft. In order to
permit the passage of the key-pins o, I cither employ a common slot or a series of
single slots in the said disc, through which the pins pass extend and glide stude
under the note sheet A, which is attached to the case and is pressed against the
disc or plate B D or against the key pins or pegs o by means of an arm F connected
to the axle shaft a. This arm F is provided on the its lower surface with a series
of short grooves or perforations so that the opening and closing of the chambers or
cells take place in the same manner as described above with reference to the grooves
in the lid. The arm F is removably so connected to the shaft a as to be capable of
removal therefrom in order to permit the exchange of the note plates or sheets.
The same said arm can as shown be pressed against the note sheet by means of a
spring and the adjustable knob or button ft although as shewn, or the removable
connection of the arm F to the axle shaft a can be effected in any other suitable
manner, so that it will be separable therefrom.
In order to reduce the friction between the arm F and the note sheet, rolling
surfaces can be employed instead of gliding sliding surfaces, as shown in the
Figures 6 and 7.
The arm F, is according to in this arrangement, is provided with a grooved
roller n the grooves of which correspond with the perforated circles, of per-
forations in the music sheet, so that the pins o can pass freely through the same
whilst the projecting parts i of the roller presses the parts of the sheet between
the circles of perforations onte against the keys disc D.
The removable separable connection of the arm F with the axle shaft a is
thereby attained that in this case effected by providing the said arm is provided
with a slot by means of which the said arm when in the position indicated by
dotted lines in Figure 7, can be pushed over the pins which is provided with an

page_text: elongated head as-shown-by-the dotted lines in Figure-7; the said arm is then
given-a-turn turned through an angle of 90° and guided under the hook t, the
inclined surfaces of which allow causes the arm or its grooved roller to be pressed
against the note sheet. The pin 8 and hook t are so connected to the shaft a that
the arm is rotated with the said shaft by means of the pin and hook. This arrange-
ment permits a ready exchange of the note sheets.
The same music sheet can be applied to the box or case of the barrel organ or as
mentioned in the first instance, attached to the lower surface of the lid by means
of catches, hooks or in any other manner so that the note sheet is prevented from
rotating.
The wind chest B is provided at its upper and lower ends with guide rollers
(Figure 1) some of which run on the horizontal ring t¹ or and others on the note
sheet A so as to provide a perfect guide for the wind chest.
It is evident that the wind chest can be duplicated and be provided with keys
and reeds on both sides of the shaft or spindle.
In such case it will of course be necessary to apply a second pressure arm F and
row of pins and for each new key a special row of pins or pegs perforations.
The annular rows of pins can be arranged to act alternately on the one and the
other either side of the shaft.
With larger instruments three four or more wind chests can be employed in an
analogous manner. The shaft can also moreover be arranged horizontally and the
note sheets vertically.
The grooved-roller n' shown in Figure 6 and 7 can also be employed--ns
resistance surface in barrel organs when the note sheets are arranged to rotate
and-when-the-keys-are-stationary.
In-such-ease the roller-must-also-be-stationarily arranged-above-the-keys-so-that
the-note-sheets-move-between-the-roller-and-the-keys.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
D
1. The combination of a barrel organ containing one or several wind chests B
which carry the reeds and the keys with a stationary exchangeable perforated note
sheet A along the under surface of which the pins o attached to the keys of the
organ glide slide and thereby open the reed eells valves when the pin or pins enter
a perforation of the note sheet and close the same or retain the same in closed
position when the said pins o are in contact with the non perforated part of the
said note sheet substantially as described and shown in the accompanying
drawings.
2. In a barrel organ with a rotary key board and a stationary, perforated note
sheet the arrangement and application of a stationary lid which said lid is provided
with concentrical grooves and acts as a bearing surface for the note sheet to
support the same against the pressure produced by the pins o of the keys but to
permits the said pins to pass through the perforations of the note sheet sub-
stantially as described and shown in Figures 1, 2 and 3 of the accompanying
drawings.
3. In a barrel organ with a rotary key board and a stationary perforated note
sheet the arrangement and application of a grooved or perforated pressure arm F
which rotates with the keyboard, above the note sheet and acts as a resisting
medium or bearing surface for the note sheet against the pressure of the gliding
sliding pins o of the keys but permits the pins to pass through the perforations of
the said note sheet substantially as described and shown in Figures 3 and 5 of the
accompanying drawings.
4. In a barrel organ with a rotary key board and a stationary perforated note
sheet the arrangement-and employment of the pressure arm F which is provided
with a grooved roller n¹ which said arm rotates with the keys above the note sheet
and acts as bearing surface for the same so as to receive the pressure of the key

page_text: pins o which glide slide under the said sheet but permits the passage of the said
pins o through the perforations of the note sheet substantially as described and
shown in Figures 6 and 7 of the accompanying drawings.
5 The arrangement and--employment of the grooved roller-n¹a
1 as bearing
surface in barrel organs with stationary keyboard and revolving note-sheet sub-
stantially-as-described and shown-in-the-accompanying drawings.
6, 5. The general arrangement construction and employment of the parts in
the said improved barrel organ substantially as described and shewn in the
accompanying drawings.
Dated this 15th day of May 1884.
Witnesses,
ANTHONY STEFFEN.
EDWIN A. BRYDGES.
CARL PIETSCHMANN.

page_text: I CARL PIETSCHMANN a member of the firm of Ch. F. Pietschmann & Sons,
Musical Instrument Makers of N° 28 Brunnen Strasse in the City of Berlin and
German Empire do hereby declare the nature of my Invention for "IMPROVEMENTS
IN BARREL ORGANS" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This Invention relates to improvements in barrel organs in which the keys
rotate beneath a stationary or exchangeable note sheet or plate and consists
substantially in the employment of rotary perforated note sheets in combination
with devices which support the sheets or plates in such manner that they offer
the pegs or pins of the key levers gliding beneath the same a slight resistance.
In rotating the keys, the key levers are held down and the cells kept closed as
long as the pins or pegs of the key levers glide under the non perforated parts of
the note sheet whereas the cells are opened as soon as the pins or pegs of the key
lever pass through a perforation of the note sheet. The accompanying Drawings
show three modifications of this device. According to the arrangement represented
in the Figures 1 and 2 the stationary note sheet A is arranged on the lower side
of the lid Ď of the barrel organ and this latter provided with concentric rings the
number and radius of which corresponds with the circles of perforations in the note
sheet.
In order to centre the exchangeable note sheets the shaft a on which the rotary
wind chest B with the keys is fixed enters by means of one of its centers in a
central opening of the note sheet Figure 1. The shaft a is provided with a screw
wheel b and is rotated from the shaft f by means of an endless screw worm d
which gears into the screw wheel b. The shaft a is hollow and conducts air from
the bellows g and reserve bellows h to the wind chest B.
The wind chest B represented in Figure 4 consists of a parallopepedical case
which is one sidedly attached to the shaft a and carries on its underside the tongues
or reeds and the valve levers m which can be arranged to rotate around a
common axis.
The ends of these levers are connected by means of the rods n with the keys a¹
which carry the pins or pegs o and are arranged on the upper side of the wind
chest. The pins o guided by means of the grate like device p which is attached to
the wind chest B and are continuously pressed against the lower surface of the
note sheet by means of a spring b₁ arranged between the lid of the wind chest B
and the keys a¹.
The position of the pins o on the windchest corresponds exactly with the circles
of perforations in the note sheet or the circular grooves in the inferior surface of
the lid D so that the pins o gliding on the lower side of the note sheet when the.

page_text: .
windchest is rotated pass each time through an opening or perforation of the note
sheet when they reach the same and penetrate with their ends into the
corresponding pin grooves in the lid and hereby under the influence of the spring b₁
and by means of the rods n and lever m open the corresponding valve h and cause
the reed to produce a tone until the said pin by the continued rotation of the wind
chest comes in contact with the edge of the slot. the end of the said slot or
perforation the pin in question is pressed down and the corresponding valve closed.
The concentric rings for the entrance of the pins into the lid can be formed by a
suitable shaping machine or metallic rings can be let into or applied to the
said lid.
It is evident that the note sheet closes the upper part of the organ and that the
chief object of the lid is to form a bearing for the said note sheet which said sheet
is pressed upwards by means of the pins o.
It is from the foregoing evident that the lid acts only in such part as support
or bearing surface where the keys are arranged consequently the resisting surface
can have the form of a grooved segment which moves above the upper surface
of the note sheet simultaneously with the keys or their pins as the said pins of
the keys glide along the lower surface of the said note sheet.
In order to prevent the bending or distortion of the note sheet and to attain a
dust tight closure to the case I arrange a disc or plate D on the axle a which said
dise rotates with the axle. In order to permit the passage of the key pins o
I either employ a common slot or single slots through which the pins pass and
glide under the note sheet A which is attached to the case k is pressed against the
disc or plate B or against the key pins or pegs o by means of an arm F connected
to the axle a. This arm F is provided on the lower surface with a series of short
grooves or perforations so that the opening and closing of the cells take place in
the same manner as described above with reference to the grooves in the lid. The
arm F is removably connected to the shaft a in order to permit the exchange of
the note plates. The same can as shown be pressed against the note sheet by
means of a spring d¹ and the adjustable knob or button f¹ although the removable
connection of the arm F to the axle a can be effected in other suitable manner.
In order to reduce the friction between the arm F and the note sheet, rolling
surfaces can be employed instead of gliding surfaces as shown in the Figures 6
and 7.
The arm F is according to this arrangement provided with a grooved roller n¹
the grooves of which correspond with the perforated circles, so that the pins o can
pass freely through the same whilst the projecting part i of the roller presses the
parts of the sheet between the circles of perforations onto the keys.
The removable connection of the arm F with the axle a is thereby attained that
the said arm is provided with a slot r by means of which the said arm can be
pushed over the pins which is provided with an elongated head as shown by the
dotted lines in Figure 7, then given a turn of 90° and guided under the hook t
the inclined surfaces of which allow the arm or its grooved roller to be pressed
against the note sheet. The pins and hook t are so connected to the shaft a that
the arm is rotated with the said shaft by means of the pin and hook.
arrangement permits a ready exchange of the note sheets.
This
The same can be applied to the case of the barrel organ or as mentioned in the
first instance, attached to the lower surface of the lid by means of catches, hooks
or in other manner so that the note sheet is prevented from rotating.
The wind chest B is provided at its upper and lower ends with guide rollers
Figure 1 which run on the horizontal ring t or on the note sheet A so as to provide
a perfect guide for the wind chest.
It is evident that the wind chest can be duplicated and be provided with keys
and reeds on both sides of the shaft or spindle.
In such case it will of course be necessary to apply a second pressure arm F and
for each new key a special row of pins or pegs. The annular rows of pins can be
arranged to act alternately on the one and the other side.

page_text: With larger instruments three four or more wind chests can be employed in an
analogous manner. The shaft can also be arranged horizontally and the note sheets
vertically.
The grooved roller n' shown in Figure 6 and 7 can also be employed as resistance
surface in barrel organs when the note sheets are arranged to rotate and when the
keys are stationary.
In such case the roller must also be stationarily arranged above the keys so that
the note sheets move between the roller and the keys.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is.
1. The combination of a barrel organ containing one or several wind chests B
which carry the reeds and the keys with a stationary, exchangeable perforated note
sheet A along the under surface of which the pins o attached to the keys of the
organ glide and hereby open the reed cells when the pin or pins enter a perforation
of the note sheet and close the same or retain the same in closed position when the
said pins o are in contact with the non perforated part of the said note sheet
substantially as described and shown in the accompanying Drawings.
2. In a barrel organ with rotary key board and stationary, perforated note
sheet the arrangement and application of a stationary lid which said lid is provided
with concentrical grooves and acts as bearing surface for the note sheet to support
the same against the pressure produced by the pins o of the keys but to permit the
said pins to pass through the perforations of the note sheet substantially as
described and shown in Figures 1, 2 and 3 of the accompanying Drawings.
3. In a barrel organ with rotary key board and stationary perforated note
sheet the arrangement and application of a grooved or perforated pressure arm F
which rotates with the keyboard, above the note sheet and acts as resisting
medium or bearing surface for the note sheet against the pressure of the gliding
pins o of the keys but permits the pins to pass through the perforations of the said
note sheet substantially as described and shown in Figures 3 and 5 of the
accompanying Drawings.
4. In a barrel organ with rotary key board and stationary perforated note sheet
the arrangement and employment of the pressure arm F which is provided with a
grooved roller n which said arm rotates with the keys above the note sheet and
acts as bearing surface for the same so as to receive the pressure of the key pins o
which glide under the said sheet but permits the passage of the said pins o through
the perforations of the note sheet substantially as described and shown in Figures 6
and 7 of the accompanying Drawings.
5. The arrangement and employment of the grooved roller n' as bearing surface
in barrel organs with stationary keyboard and revolving note sheet substantially as
described and shown in the accompanying Drawings.
6. The general arrangement construction and employment of the parts in the
said improved barrel organ substantially as described in the accompanying
Drawings.