Improvements in Apparatus for Turning Over the Leaves of Music.
Year: 1891

page_text: Date of Application, 7th July, 1891
Complete Specification Left, 6th Aug., 1891-Accepted, 12th Sept.,. 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Turning Over the Leaves of Music.
I, GUSTAV LUDWIG MAX FOUQUET, of 91 Hammerbrookstrasse, Hamburg,
Germany, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to apparatus for turning over the leaves of music and
which, notwithstanding its simple construction, works with accuracy and certainty,
can be employed with music books of any thickness, and can be set in operation by
simply pulling a string by means of the foot or the knee. The said apparatus is
also constructed in such a manner that it is not necessary to first place the leaves
of the book into the apparatus; and it has also the great advantago that it enables
one or more leaves of music to be turned back again as is often required when
repeating, in the same simple manner as the leaves are turned forward.
In the accompanying drawings,
Fig. 1 is a front elevation of the apparatus ;
Fig. 2 a plan of the same, in which for the sake of clearness, a pusher-up, herein-
after described, is shown separately. Both figures illustrate the apparatus in the
position of rest.
Figs. 3 to 6 are detail views, Fig. 3 being a cross section through the guide bar;
Fig. 4 is a plan of the same; and Figs. 5 and 6 illustrate the pusher-up with its
actuating nechanism, at the moment of pushing up, and after the completion of this
operation, respectivoly.
In these views Figs. 5 and 6, the pusher-up is also shown removed from its carrier
for the sake of clearness.
On a plate a which is fixed in any desired manner to a music stand, piano, etc., is
mounted a guide b in which the sliding carriages c and d can be moved by means of
strings g and h respectively passing over pulleys f. On the carriages c and d, which
are normally held in their initial position by springs i and k respectively are fixed
horizontal axes and m and the vertical axis.p; on the axes land m are arranged
the arms nand o (hereinafter called turning arms). of two levers whose shorter arms
are formed as loops and r.
On the axis p is mounted a slotted plate or loop 10
which serves to actuate the pusher-up. On the guide bar bare fixed pins:st and ",
which enter the slots of the loops.q, r and w, and, on the movement of the carriages,
effect the corresponding movement of the turning arms and of the pusher-up. On
a pinz carried by the loop w, which is provided with a slot u and stop y, is fixed by
means of a sleeve, the. pusher-up which consists of two small adjustable tubes 6¹
carried by an arm a¹. In each of these tubes is arranged a smaller tube c² which is
constantly pressed forwards by spring action, and is furnished with an elastic
head d. For the purpose of adjusting the music turning apparatus to suit music
books of different thickness, the pins m, p and v are arranged adjustably in slots f¹.
Furthermore for the purpose of arresting the repeating arm n in the position in
which it must be held for the purpose of turning back a definite number of leaves,
there is provided on the guide b, a spring catch g' which engages in a recess h¹ of
the carriage c
There is also provided on the carriage.c a drag plate whose front
edge coincides exactly with the edge of c, but whose rear edge is provided with a
stop the movement of which is limited by two pins and m, so that the position
of the recess in the drag plate relatively to that in the carriage can be altered in a
manner hereinafter described.
The operation of the apparatus is as follows:-
The music book is placed on a ledge on the plate a and is retained in place by
anringa If now it he desired to turn over a leaf the performer pulls by means of

page_text: his foot or his knee the string h, whereby the carriage d and with it, at first, the
turning arm o and the pusher-up, are moved in a straight line. As soon as the
carriage has moved so far that the end of the slot u strikes against the pin v, then
on further movement of the carriage, the loop wo and with it the pusher-up mounted
thereon, begin to turn round to the left. By this means the tubes with their
elastic heads d' will' strike against the sheet of music, the forward one pressing
gently whilst the rearward one presses more firmly against the sheet, the pusher-up
coming to rest with its arm a¹ against the stop pin y. The sheet of music held in
this manner. will now be advanced by the pusher-up as the movement of the
carriaged continues and as the sheet is held in the back of the book, it will form. a
fold into which passes the turning arm o which is then caused to rise. During the
operation above described, the turning arm omoves, by reason of the alot.r forwards
in a straight line, until the end of the slot reaches the pin t. On further move-
ment of the carriage the pint acts against the slotted arm of the lover-ao.that the
turning arm.o flies upwards into the douted, position shown in Fig. 1 and enters the
fold of the music sheet formed by the pusher-up. As soon as this has taken place,
the pusher-up is also moved further to the left and falls by reason of its peculiar
construction into the position. shown in Fig. 6,.in. which it follows the movement of
the carriage, without further touching, the music book, whilst the turning arm
completes the turning over of the sheet. If now the string h.be. released, the
several parts are caused by the action of the spring to return to their original
positions..
During this operation. the turning.arm n remains. out of operation. If now one
or more of the music leaves that have been turned over, are to be turned, back
again,, as is necessary when repeating, the string gis pulled, whereby the arm nis
raised in a similar manuor to that in which the turning arm o is raised and herein-
before described. In this operation..the spring gengages in the now.coinciding
recesses of the carriage c and drag plate it and holds the carriage. fast when the
pulling ceases. The leaves that were turned over now remain on the. turning arm,
and in order to turn them back again it is merely necessary, by pulling the
string,g, to turn the arm.n more to the right. Towards the end of the movement
of the carriage.c, the stop ' strikes against the pin m² and shifts the drag plate i¹
in such a manner that the two recesses,h' are shifted in relation to one another;.so
that on the release of the string g and on the return of the several parts to. their
original positions, the spring a cannot engage in the recesses h. Towards.tho.cnd
of the return movement of the carriage c.the two recesses h' will be again placed
over one another by means of the pin and stop k¹.
Dated this 7th day of July 1891.
'
W. LLOYD WISE,
Per F. J. Brougham,
46; Lincoln's Inn Fields, London, W.C., Agent for 'the' Applicant.
COMPLETE. SPECIFICATION.
Improvements in Apparatus for Turning Over the Leaves of Music.
I, GUSTAV LUDWIG MAX FOUQUET, of 91 Hammerbroskstrasse, Hamburg,
Germany, Engineer, 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 :-
This invention relates to apparatus for turning over the leaves of music, which,
notwithstanding its simple construction,, works. with. accuracy and certainty, can be
employed with music books of different thickness, and can. beinet in operation by
simply pulling a string by means of the foot or the knee. The said apparatus, is
also constructed in such a manner that it is not necessary to first place the leaves

page_text: of the book into the apparatus; and it has also the great advantage that it enables
one or more leaves of music to be turned back again, as is often required when
repeating, in the same simple manner as the leaves are turned forward.
In the drawings left with my Provisional Specification,
Fig. 1 is a front elevation of the apparatus ;
Fig. 2 is a plan of the same, in which, for the sake of clearness, the pusher-up,
hereinafter described, is shewn separately. Both figures illustrate the apparatus
in the position of rest.
Figs. 3 to 6 are detail views, Fig. 3 being a cross section through the guide
bar; Fig. 4 a plan of the same; and Figs. 5 and 6 illustrating the pusher-up
with its actuating mechanism at the moment of pushing up, and after the
completion of this operation, respectively. In these views Figs. 5 and 6, the
pusher-up is also shewn removed from its carrier for the sake of clearness.
On a plate a which is fixed in any desired manner to a music stand, piano, etc.,
is mounted a guide 6 in which the sliding carriages c and d can be moved by
means of strings g and h respectively each passing over a pulley On the
carriages c and d, which are normally held in their initial position by springs i
and respectively, are fixed horizontal pins and m, and the vertical pin p; on
the pins and mare arranged the arms n and o, (hereinafter called turning arms)
of two levers whose shorter arms are formed as loops 7 and 7. On the pin p is
mounted a slotted plate or loop to which serves to actuate the pusher-up. On the
guide bar bare fixed pins 8, t and v, which enter the slots of the loops or levers q, r
and w respectively and, on the movement of the carriages, effect the corresponding
movement of the turning arms and of the pusher up. On a pin carried by the
loop w, which has a slot u and is provided with a stop y, is fixed, by means of a
sleeve, the pusher-up which consists of two small adjustable tubes b₁ carried by
an arm a. In each of these tubes is arranged a smaller tube c' which is constantly
pressed forwards by spring action, and is furnished with an elastic head d. For
the purpose of adjusting the music turning apparatus to suit music books of
different thickness, the pins m, p and v are arranged adjustably in slots f¹.
Furthermore for the purpose of arresting the repeating arm n in the position in
which it must be held for the purpose of turning back a definite number of
leaves, there is provided on the guide b, a spring catch g' which engages in a
recess in the carriage c. There is also provided on the carriage ca drag plate i¹
whose front edge coincides exactly with the edge of c, but whose rear edge is
provided with a atop the movement of which is limited by two pins and m³, 80
that the position of the recess in the drag plate relatively to that in the carriage
can be altered in a manner hereinafter described.
The operation of the apparatus is as follows:
==
The music book is placed on a ledge on the plate a and is retained in, place
by springs. If now it be desired to turn over a leaf, the performer pulis by
means of his foot or is knee, the spring h whereby the carriage and with it,
at first, the turning arm o and the pusher-up are moved in a straight line. As
soon as the carriage has moved so far that the end of the slot u strikes against
the pin r, then on further movement of the carriage, the loop w and with it the
pusher-up mounted thereon, will begin to turn round to the left. By this means
the tubes c with their clastic heads will strike against the sheet of music,.
the forward one pressing gently whilst the rearward one will press more firmly
against the sheet, the pusher-up coming to rest with its arm a against the stop
pin y. The sheet of music held in this manner, will now be advanced by the
pusher-up, as the movement of the carriage d continues and as the sheet is held in
the back of the book, it will form. a fold into which the turning arm o which will
now be rising will pass. During the operation above described, the turning arm o
will move by reason of the slot r, forwards in a straight line, until the end of the
slot reaches the pin t. On further movement of the carriage the pin t acts against
the slotted arm of the lever so that the turning arm o flies upwards into the dotted

page_text: position shewn in Fig. 1 and enters the fold of the music sheet formed by the
pusher-up. As soon as this has taken place, the pusher-up will also be moved
further to the left and falls by reason of its peculiar construction, into the position
shewn in Fig. 6, in which it follows the movement of the carriage, without further
touching the music book whilst the turning arm completes the turning over of the
sheet. If now the string be released, the several parts are caused by the action
of the spring to return to their original positions.
During the above described operation the turning arm n remains out of use.
If
now one or more of the music leaves to be turned over, are to be turned back
again, as is necessary when repeating, the string. g is pulled whereby the arm nis
raised in a similar manner to that in which the turning arm o is raised as herein-
before described. In this operation the spring g' will engage in the now coinciding
recesses of the carriage c and drag plate and will hold the carriage fast when
the pulling ceases. The leaves that are afterwards turned over will remain on the
partly raised turning arm n, and in order to turn them back again it is merely
necessary, by pulling the string g, to turn the arm n more to the right. Towards
the end of the movement of the carriage c, the stop k will strike against the pin m
and thus shift the drag plate in such a manner that the two recesses /' will be
shifted in relation to one another, so that on the release of the string g and on the
return of the several parts to their original positions, the spring g' cannot engage
in the recesses h. Towards the end of the return movement of the carriage ethe
two recesses. will be again placed over one another by contact of the stop k with
the pin A.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Apparatus for turning over the leaves of music, both in a forward direction
and in a backward direction, comprising two sliding carriages, c and d arranged to
move in a guide band normally held in their original positions by springs i and k,
the carriage e being provided with a pin that carries a turning arm n connected to
a slotted lever g, the carriage d'being provided with a pin m that carries a turning
arm o connected to a slotted lever r, and also with a perpendicular pin p which
serves for the reception of a slotted carrier for a pusher-up, and the guide b
having fixed thereto pins stand' v, the arrangement being such that the oscillatory
movement of the turning arms necessary for turning over the leaves, and for the
rotation of the pusher-up, on the advance of the carriages is effected by one end of
the slots in the levers and r, and in the carrier w coming into contact at the
required times, with the pins, and v respectively, substantially in the manner
hereinbefore described.
2. The arrangement of the pusher-up referred to in the preceding claim.on a
carrier w formed with a slot u and capable of rotation about the pin p of the
carriage d'the said carrier being provided with a pin over which is slipped one
end of the arm a¹ of the pusher-up, and with a pin y that serves as a stop for the
said arm a' substantially as hereinbefore described.
3. The peculiar construction of the pusher-up hereinbefore described, and
consisting of two small tubes c¹ provided with elastic heads d' and arranged each
in a tube b', in which it is constantly pressed forwards by a spring, and an
angularly bent arm a¹ carrying the said tubes 6, the arrangement being such that
the centre of gravity of the mechanism is so placed that the pusher-up both before
the commencement and after the termination of its operation is turned away
from the book so that it does not then touch the same notwithstanding the further
movement of the carriage d by which it is carried.
4. In the apparatus for turning over the leaves of music specified in Claim 1, a
device for fixing the repeating-turning-arm n by which sheets of music are turned
backward, in a half raised position, the said device comprising a spring g' fixed

page_text: laterally on the fixed guide b, a drag plate formed with a recess h', provided with
a pin and arranged to slide on the carriage c which is also formed with a
recess h¹, and pins and m' which are fixed on the guide and serve as stops
to shift the drag plate and consequently the slot A thorein relatively to the
corresponding slot in the carriage o substantially as herein described for the
purpose specified.
Dated this Ath day of August 1801
G. L. M. FOUQUET,
By L. W., per F. B.