AN IMPROVED MECHANICAL ARRANGEMENT APPLICABLE TO PIANOFORTES AND MUSIC PRO STANDS FOR TURNING OVER THE LEAVES OF MUSIC
Year: 1873

page_text: LETTERS PATENT to Edward Samuel Eyland and John Bosley Warren,
both of Bristol, in the City of Bristol, for the Invention of "AN
IMPROVED MECHANICAL ARRANGEMENT APPLICABLE TO PIANOFORTES AND MUSIC
PROVISIONAL SPECIFICATION left by the said Edward Samuel Eyland
and John Bosley Warren at the Office of the Commissioners of
Patents, with their Petition, on the 7th October 1873.
We, EDWARD SAMUEL EYLAND and JOHN BOSLEY WARREN, both of
Bristol, in the City of Bristol, do hereby declare the nature of the said
Invention for "AN IMPROVED MECHANICAL ARRANGEMENT APPLICABLE TO
PIANOFORTES AND MUSIC STANDS FOR TURNING OVER THE LEAVES OF MUSIC," to be
as follows:-
This Invention consists in constructing apparatus suitable for turning
over the leaves of music in the following manner :-Take for example
the music stand of a pianoforte. For the purposes of this Invention we
form the lower and hinged part of such said stand somewhat different to

page_text: the ordinary stand, that is to say, we form such lower part deeper than
usual, and make the ledge on which the music rests considerably shorter
than usual, and to the front of the said lower part we adapt and connect
the following parts:-First. An upright spring to press against the
folded or doubled part of the music if not bound to prevent it from
slipping sideways, the said spring being fixed by its lower end to the
lower part of the stand. By the side of the said spring we screw an
upright stud or pin carrying two loose flanged rollers. The upper part
of the lowermost roller has a horizontal arm fixed thereinto, and the
outer end of the said arm has a horizontal lever pivotted thereto and
capable of moving up and down within certain limits determined by
stop pins or studs fixed in the pivotted part of the said lever, the said
pins respectively coming into contact with the upper and under edges of
the aforesaid fixed arm for the purpose hereafter stated. The uppermost
of the aforesaid rollers has a piece of elastic connected thereto by one:
end, the other end of the said elastic being fixed to the pivotted end of
the before-mentioned lever. The lowermost roller is similarly provided
with a piece of clastic stronger and longer than the upper piece afore-
said, and having its outer end fixed by a pin or screw to the lower part
of the music stand. A piece of cord passes from the uppermost roller:
in an opposite direction to the piece of clastic thereon. The said cord
passes over a small roller to the end of another lever pivotted at the left-
hand side of the lower part of the stand near the end thereof. About
midway of the length of this lever and above it a block is fixed to the
stand; and between this block and lever we place loosely a flat bag
made of india-rubber, to which is affixed one end of a flexible tube, the
lower end of which is affixed to an air-tight hollow ball of rubber.
We also employ spring clips, which are made to clip the bottom edge of
each page of music. These clips are made with a hook, which must be
placed outermost in order that the outer end of the before-mentioned
lever may catch hold of it for turning over the pages of the music in
succession, as follows:-
.

page_text: then adjusted between the block and its respective lever before mentioned
and the air ball placed on the ground under the piano, so that when the
performer wishes to turn over the leaves of the music he has simply to
press his foot on the air ball, the effect of which will be to inflate the
upper bag, thereby pushing down the lever beneath it, which in its turn
will pull the cord connected thereto and turn the uppermost roller partly
round, thereby causing the other lever to catch hold of the hooked part
of the outermost clip, and then by the continued tension on the elastic
causing the leaf of the music to be turned over. The pressure of the
foot is then removed from the air ball, the lever is thus released from
the hooked part of the clip, and the lowermost picce of clastic pulls back
the lever into its former position ready to take hold of the hooked part
of another clip, and so on in succession.
We would here remark that instead of having a hook to each clip, as
above stated, a pneumatic sucker might be made to catch hold of the
clip, or a magnet could be employed for that purpose, and slidden on to
and off of each clip for engaging it, for turning over the leaves of music
and disengaging them after they were turned over.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Edward Samuel Eyland and John Bosley Warren
in the Great Scal Patent Office on the 7th April 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EDWARD
SAMUEL EYLAND and JOHN BOSLEY WARREN, of Bristol, in the City of
Bristol, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of October, in the year of our Lord
One thousand eight hundred and seventy-three, in the thirty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said Edward Samuel Eyland and John Bosley Warren,
Her special licence that we, the said Edward Samuel Eyland and John
Bosley Warren, our executors, administrators, and assigns, or such
others as we, the said Edward Samuel Eyland and John Bosley Warren,
our executors, administrators, and assigns, should at any time agree
with and no others, from time to time and at all times thereafter during

page_text: SE
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for AN
IMPROVED MECHANICAL ARRANGEMENT APPLICABLE TO PIANOFORTES AND MUSIC
STANDS FOR TURNING OVER THE LEAVES OF MUSIC," upon the condition |
(amongst others) that we, the said Edward Samuel Eyland and John
Bosley Warren, our executors, or administrators, by an instrument in
writing under our or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Edward Samuel Eyland and John
Bosley Warren, do hereby declare the nature of our said Invention, and
in what manner the same is to be performed, to be particularly described.]
and ascertained in and by the following statement, that is to say :-
This Invention consists in constructing apparatus suitable for turning
over the leaves of music in the following manner :-Take for example
the music stand of a pianoforte. For the purposes of this Invention we
form the lower and hinged part of such said stand somewhat different to
the ordinary stand, that is to say, we form such lower part deeper than
usual and make the ledge on which the music rests considerably shorter
than usual, and to the front of the said lower part we adapt and connect
the following parts:-First. An upright spring to press against the
folded or double part of the music if not bound to prevent it from 2
slipping sideways, the said spring being fixed by its lower end to the
lower part of the stand. By the side of the said spring wo screw an
upright stud or pin carrying two loose flanged rollers. The upper part
of the lowermost roller has a horizontal arm fixed thereinto, and the
outer and of the said arm has a horizontal lever pivoted thereto, and 3
capable of moving up and down within certain limits determined by
stop pins or studs fixed in the pivoted part of the said lever, the said
pins respectively coming into contact with the upper and under edges of
the aforesaid fixed arm for the purpose hereafter stated. The uppermost
of the aforesaid rollers has a piece of clastic connected thereto by one 3
end, the other end of the said clastic being fixed to the pivoted end of
the before-mentioned lever. The lowermost roller is similarly provided
with a piece of elastic stronger and longer than the upper picce afore-

page_text: said, and having its outer end fixed by a pin or screw to the lower part
of the music stand. A piece of cord passes from the uppermost roller
in an opposite direction to the piece of elastic thereon. The said cord
passes over a small roller to the end of another lever pivoted at the left-
hand side of the lower part of the stand near the end thereof. About
midway of the length of this lever and above it a block is fixed to the
stand; and between this block and lever we place loosely a flat bag
made of india-rubber, to which is affixed one end of a flexible tube, the
lower end of which is affixed to an air-tight hollow ball of rubber. We
also employ spring clips, which are made to clip the bottom edge of each
page of music. These clips are made with a hook, which must be placed
outermost in order that the outer end of the before-mentioned lever may
catch hold of it for turning over the pages of the music in succession as
follows:-
MODE OF OPERATING.
The performer first places as many clips on the music as there are
leaves to be turned over, taking care to place them one behind the other
and with the hooked parts outermost, and so as to come opposite to the
end of the aforesaid lever. The music is then adjusted in the stand and
held by the before-mentioned pressure spring. The aforesaid air bag is
then adjusted between the block and its respective lever before mentioned
and the air ball placed on the ground under the piano, so that when the
performer wishes to turn over the leaves of the music he has simply to
press his foot on the air ball, the effect of which will be to inflate the
upper bag, thereby pushing down the lever beneath it, which in its turn
will pull the cord connected thereto and turn the uppermost roller partly
round, thereby causing the other lever to catch hold of the hooked part
of the outermost clip, and then by the continued tension on the elastic
causing the leaf of the music to be turned over. The pressure of the
foot is then removed from the air ball, the lever is thus released from
the hooked part of the clip, and the lowermost piece of elastic pulls
back the lever into its former position ready to take hold of the hooked
part of another clip, and so on in succession.
We would here remark that instead of having a look to each clip, as
above stated, a pneumatic sucker might be made to catch hold of the
clip, or a magnet could be employed for that purpose and slidden on to
and off of cach clip for engaging it for turning over the leaves of music
and disengaging them after they were turned over.

page_text: And in order to explain our said Invention more fully we now proceed
to describe the means by which it may be carried into practical effect,
reference being.had to the illustrative Sheet of Drawing accompanying
these Presents and to the numeral figures and letters of reference marked
thereon, as follows
E
DESCRIPTION OF THE DRAWING.
Figure 1 represents an elevation; Figure 2, a plan of one mode of
turning over the leaves of music according to our said Invention. A is
a plate on which is attached the mechanism for turning the leaves over,
and is placed on the ordinary book ledge of a piano. B is the turner 1
which is shown ready for usc. This turner oscillates on a pivot C,
working in a plate attached underneath the pulley D. To the plate is
fixed one end of a line E, which after passing round the pulley D'has its
other end attached to a semi-pulley F, the pivot of which is at f. This
semi-pulley is kept in position by means of the spring G. A second 1
spring Ĥ serves to bring back the turner to its original position. K is a
block fixed to the plate A. L is a depressor attached to the semi-pulley
F. Between the fixed block K.and the depressor L is placed an india-
rubber air vessel M, which communicates with a second air vessel N
placed under the piano by means of a tube O, Figures 3 and 4.
Figure 3 shows the vessel M depressed, and Figure 4 the vessel M
expanded by means of the foot depressing the vessel N. Pare leaf
dividers placed between each leaf and pivoting on the pin Q.
serves to hold them up.
The pin R
2
We will now proceed to describe the manner by which the leaves of a 2
piece of music may be turned over by the above appartus. The piece
of music is placed on an ordinary book ledge and the leaf dividers placed
between each leaf in the position at P.. The air vessel N, Figure 3, is
placed underneath the piano within easy reach of the foot.
When it is desired to turn over a leaf the said air vessel N is depressed, 3
thereby expanding the air vessel M. This acts on the depressor L which
turns round the semi-pulley F. This motion of the pulley is communi-
cated by the line E to the turner B through the pulley D, and brings
the turner in the position represented at B¹ behind the leaf of music
which is about to be turned over. The pulley D continuing to turn then 3
brings round the turner B and leaf of music in the position represented

page_text: at B"; the pressure being now taken off the air vessel N the air con-
tained in M will return into it; the elastic spring G.brings back the
semi-pulley F into its original position, and the spring H brings the
turner B back against one of the leaf dividers P. Every time the turner
B assumes the position represented at B¹ it tilts over one of the dividers
P, as shown by dotted lines at P¹.
Figure 5 shows an elevation and Figure 6 a plan of another modo of
turning over the leaves of music according to our said Invention, by
means of which the trouble of dividing and fixing the leaves is avoided,
the piece of music having simply to be placed on the instrument. The
turner B in this case works from right to left in a vertical direction, but
at a slight angle from the plane of the paper, as shown at Figure 6.
Motion is given to the turner B by means of a draw line K, one end of
which is fixed to the pulley D, and which after passing over a small
3 pulley d is attached to a lever F, which may be moved up or down by
means of the air vessels M and N. The turner is provided with a piece
of india-rubber Z or other suitable material capable of adhering to
the leaf. Additional friction or holding power is obtained by pressure
against the inclined block P, shown at an angle over which the corner
of the leaf already taken hold of by the piece of india-rubber Z has to
travel in turning. The curved or inclined block P forms a mould so to
speak to compel the leaf to buckle or turn under at the corner so as to
enable the turner to work under and so slip to the back of the leaf.
When being turned over to the left hand the leaf of music is carried
with it. The end of the turner is provided with a small brush Q, tho
object of which is to deaden the noise. When the leaf is turned over
and pressure on the vessel N taken off the turner is carried back by
means of the spring G ready to operate again.
We do not intend to limit ourselves to the use of an elastic fluid,
such as air, for expanding or depressing the vessels M and N, as a non-
elastic fluid, such as water or quicksilver, would answer the purpose.
Having now described the nature and object of our said Invention for
"An Improved Mechanical Arrangement Applicable to Pianofortes and
Music Stands for Turning over the Leaves of Music," and the means
whereby it may be carried into practical effect, we wish-it to be under-
stood that what we claim as our Invention and desire to secure by the
herein before in part recited Letters Patent is, constructing apparatus for
.

page_text: the purpose of turning over the leaves of music, substantially as described
and represented.
In witness whereof, we, the said Edward Samuel Eyland and John
Bosley Warren, have hereunto set our hands and seals, this Second
day of April, in the year of our Lord One thousand eight hundred
and seventy-four.