An Accordion adapted to be Played Mechanically with a Perforated Music Sheet.
Year: 1895

page_text: Date of Application, 9th Jan., 1895-Accepted, 22nd June, 1895
CUMI LEIE DI PUIFICA
An Accordion adapted to be Played Mechanically with a Perforated
Music Sheet.
1, PAUL FEHLING, of 4, Lohrstrasse, Leipzig, in the Empire of Germany,
Merchant, 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:-
My invention relates to an accordion adapted to be played mechanically, with a
perforated music sheet, in which the operation of the music sheet takes place
continuously and uniformly..
My improved accordion is represented in the accompanying drawings, in which
like letters of reference indicate corresponding parts,
Figure 1. is a front view of the accordion with the cover plate removed and the
case or bellows cut..
Fig. 2. is a side view from the left, Fig. 3. is a side view from the right; Fig. 4. is
an upper view of the driving mechanism for the music sheet.
Fig. 5. is a section on the line x-x of Fig. 4.
Figs. 6 & 7 are side views of the frame represented in Fig. 5.
Fig. 8 is a section on the line y-y of Fig. 4.
Fig. 9 is a side view of the frame represented in Fig. 8.
Fig. 10 is a section on the line z-z of Fig. 5.
Fig. 11 is a plan of the frame represented in Fig. 5. and
Fig. 12. shows a section on the line w-w of Fig. 8.
The mechanism designed for operating, the perforated music sheets and actuated
by the movement of the case or bellows consists of two parallel shafts a and b, upon
which cord pulleys and ratchet wheels with pawls are arranged in part loosely and
in part firmly.
Upon the shaft a are firmly secured a toothed wheel c aud' a cord pulley d with
which the ratchet wheel e'is made in one piece. On this shaft is likewise fixed a
worm.f. Between the toothed wheel c and the ratchet wheel e is a broader cord"
pulley g: arranged loosely upon the shaft. To this pulley is fixed the pawl h
engaging with the ratchet wheel-e and held in engagement with the teeth of the
ratchet wheel-by a spring i. When the cord pulley 9 is turned in the direction of
the arrow, Fig. 10, the pawl-h carries away the ratchet wheel'e and sets the shaft a
in rotary movement.
In the back movement of the cord pulley 9 however the pawl slides' over' the
teeth of the ratchet wheel, so that the turning movement of the cord disc does not
affect the direction of rotation of the shaft. But in order to effect during the
return movement of the cord pulley g the continued turning movement of the shaft a
in the direction of the arrow, Fig. 10, use is made of the shaft b.
Upon this shaft can loosely turn a cord pulley k, corresponding to the cord pulley d
upon the shaft a and made in one piece with a ratchet wheel l. Corresponding to
the cord pulley 9 upon the shaft a there is also upon the shaft ba broader cord
pulley m in the interior of which is a spiral spring n fixed with one end to the
shaft b and with the other end to the cord' pulley m... A-pawlo held by a spring p.
in engagement with the teeth of the ratchet wheel 1, is arranged on the cord pulley.
On the cord pulley m being turned in the direction of the arrow, Fig. 12, the
spring.n in the interior of the same is put under tension, the pawl o sliding over
Price 8d.1

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the teeth of the ratchet wheel . When the spring expands it effects the turning
of the cord pulley in the opposite direction, the ratchet wheel being then carried
away with the cord pulley k. Round the cord pulleys and d is stretched an
endless crossed cord so that these two cord pulleys will always turn in opposite
directions. A second cord is fixed with one end to the cord pulley m and wound
a few times round the same in such a manner that in the unwinding of this cord
the spring n is put under tension. The cord r is in its further course wound round
the cord pulley g on the shaft a so that the two cord pulleys g and m will always
turn in the same direction. The other end of the cord passes through the bellows
and is attached to the cover s. By the aid of the mechanism hereinbefore set
forth it is possible to impart to the shaft a a continuous rotary movement in one
direction.
In order to maintain the rotary velocity of the shaft as constant as possible the
toothed wheel e engages with a second wheel t supported in the same frame. On
the shaft u to which this toothed wheel is secured, a small fly wheel » is firmly
arranged. With the object of utilizing this continuous uniform rotary movement
of the shaft a for the uniform movement of the music disc, a vertical shaft a¹ is
arranged in a lateral step bearing 6 on the frame of the shaft a Fig. 11. A worm
wheel Fig. 2, on the shaft a¹ engages with the worm and transmits the motion
of the same to the mechanism for moving the music sheet.
In the accompanying drawings is supposed as an example a round music-disc
which is placed upon journals of a disc e' firmly secured at the end of the shaft a¹
Fig. 1. By turning the shaft a¹ the journals d' and with the same the music disc is
caused to turn. Of course long music sheets may also be actuated, and the device
for moving the music sheet is arranged in such a manner that the movement is
derived from the shaft a¹.
The action of the music sheet and of its perforations are immaterial as regards the
present device for the constant and uniform movement of the same.
The mode of operation of the mechanism is as follows; -
-
r
When the bellows is pulled out thus drawing in air the cord is pulled at the
same time and wound from the cord pulleys m and g. Then the two cord pulleys
turn in the direction of the arrows, Fig. 1. The pawl h carries round the ratchet
wheel e cord pulley d and shaft a so that through the medium of the worm the
worm wheel and the shaft a¹ is set in rotary movement, and that by the toothed
wheels c and the small fly wheel is caused to rotate.
The cross cordy effects the rotation of the cord pulley k and of the ratchet
wheel in the opposite direction to that of the cord pulley m the pawl o sliding over
the teeth of the ratchet wheel. The spring n in the cord pulley m is put under
tension. When the bellows are pressed together the cord ris wound upon the cord
pulley m owing to the contraction of the spring n and the consequent turning of the
said cord pulley. The cord pulleys m and g are turned in the opposite direction to
that in which they previously turned. As however now on the one hand the pawl /
can slide over the teeth of the ratchet wheel e while on the other hand the cord
pulley m by the pawl o carries round the cord pulley k the cord pulley d by the aid
of the cross cord g is turned in the opposite direction to that of the cord pulley 9.
This direction of the rotary movement is however the same as the original direction,
so that the shaft a is turned in the same direction as before inasmuch as the cord
pulley d is firmly secured to the shaft a. The music sheet is thus also actuated
during the compression of the bellows. By the small fly wheel the differences
occurring in the transition from the pulling to the pushing and vice versa are
equalized.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is;-
A device for uniformly actuating the perforated music sheet in accordions

page_text: cord pulley g loosely, and a ratchet wheel e and cord pulley d firmly upon a shaft a,
and by the arrangement of a second cord pulley m upon a shaft b which is connected
with the same by a spring n fixed thereto and to the shaft b, furthermore a ratchet
wheel made in one piece with a cord pulley k and held loosely upon the shaft b,
round the cord pulleys d and k being laid a crossed cord 9 in such a manner that
the cord pulleys g and m with the ratchet wheels e and are coupled by pawls h
and o provided on the former in the rotation in a definite direction so that by the
pulling, effected in the movement of the air bellows, of a cord r fixed upon the cord
pulley m and laid round the same and also round the cord pulley g the shaft a will
be set in rotation in one direction and the spring n will be put in tension at the
same time, whilst in the return movement of the bellows the spring n will wind up
the cord and by means of the crossed cord g the shaft a will be turned in the same
direction as previously, by which shaft a the continued movement of the music
sheet is effected by an appropriate transmitting device, and in which by the arrange-
ment of a small fly wheel the difference occurring in the transition from a pull and
push will be equalized ;--substantially as herein described and shown and for the
purpose set forth.
Dated this 9th day of January 1895
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant.