Im- PROVED APPARATUS FOR TURNING OVER MUSIC LEAVES OR SHEETS
Year: 1859

page_text: LETTERS PATENT to William Clark, of 58, Chancery Lanc, in the County
of Middlesex, Engineer and Patent Agent, for the Invention of "Im-
PROVED APPARATUS FOR TURNING OVER MUSIC LEAVES OR SHEETS."-A com-
munication from abroad by Hermine Madeleine Basset, of Boulevart St.
Martin, Paris, in the Empire of France.
Sealed the 20th January 1860, and dated the 28th July 1859.
PROVISIONAL SPECIFICATION left by the said William Clark at the
Office of the Commissioners of Patents, with his Petition, on the 28th
July 1859.
I, WILLIAM CLARK, of 53, Chancery Lane, in the County of Middlesex,
Engineer and Patent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVED APPARATUS FOR TURNING OVER MUSIC LEAVES OR SHEETS," to
be as follows:-
This Invention relates to apparatus for turning over the leaves of music,
and which is placed on musical instruments, such as pianos, organs, and
others. This apparatus or turn-leaf is actuated by means of a pedal operated
on by the performer. I have represented this apparatus in the Drawings
hereunto annexed, in which Fig. 1 represents a front view of the exterior,
Fig. 2 a front view of the interior, while Fig. 3 represents some of the detail.
a, bracket or support for the music book; b, case enclosing the working parts
of the apparatus; c, slide moving in guides at the upper part of the box b,
it is furnished on the right and left with stops, which limit the course of
movement either on the one side or the other; d, separators of the leaves to

page_text: be turned, which separators are hinged to the slide c, their number varies
according to the number of pages to be turned. These separators are furnished
with an axis at their hinder part which allows of their being raised or depressed.
e, strips of india-rubber fixed to the slide c, serving to hold down the separators
d. f, inclined planes fixed to the frame b.below the slide c. g, lever pivoted
at its lower part, it is furnished with a metallic or other spring h to pull it
back; this lever is held between two stops on the slide c in such manner
that the movement draws the slide c with it. i, pullies round which the
cord passes; this cord is attached to the upper extremity of the lever g,
and passes outside. the box band behind the piano or organ, thence
descends over a turn pulley and is attached at bottom to a pedal.
The parts being arranged as described and represented to make use of the
instrument, the back of the book or music is pinched between the two bars /
represented in Fig. 8. The music so held is placed in the middle of the
bracket a, where it is held at the top and bottom by two stops, the slide c is
pushed to the extremity of its course to the right, each of the separators d' are
then raised and inserted successively between the leaves of the music which
are to be turned. When it is wished to turn a leaf it is only necessary to
press with the foot on the pedal. The.cord jacts on the lever g,, which draws
the slide c. This movement causes the first separator d to mount the incline f,
and as a consequence to turn-over the leaf on the-removal of the foot from the
pedal, the springh brings back the lever g to its original position. It will be
easily understood that with a repetition of the same movement, each of the
separators on advancing up the inclinef will turn over the leaf with which it
is contact. In the Drawing the leaves of music are represented in red.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Clark in the Great Seal Patent Office on the
27th January 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CLARK, of 53, Chancery Lane, in the County of Middlesex, Engineer &
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of July, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Clark, Her. special licence that I, the said William

page_text: Clark, my executors, administrators, and assigns; or such others as I,
the said William Clark, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
5 make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of.. Man, an Invention for
"IMPROVED APPARATUS FOR TURNING OVER MUSIC LEAVES OR SHEETS," a com
munication from abroad by Hermine Madeleine Basset; of Boulevart St.
Martin, Paris, in the Empire of France, upon the condition (amongst others)
that I, the said William Clark, my executors or administrators, by an
instrument in writing under my, 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 .samè
'to be filed in the Great Seal Patent Office within.six calendar months
next and immediately after the date of the said Letters Patent."
I
NOW KNOW YE, that I, the said William Clark, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in..and by the
following statement, reference being had to the Sheet of Drawings hereunto
annexed, and to the letters and figures marked thereon (that is to say):
This Invention relates to apparatus for turning over leaves of music which
may be placed on musical instruments, such as pianos, organs, & others.
This apparatus or 'turn-leaf is actuated by means of a pedal operated on by
the performer. I have represented this music stand or apparatus' in the
Drawings hereunto annexed, in which Fig. 1 shows, a front view of the
exterior, and Fig. 2 a front view. of the interior, while Fig. 3 represents some
of the details. a, bracket or support for the piece of music or book; b, case
enclosing the working parts of the apparatus; c, slide moving in guides at the
upper part of the box or case b, it is furnished on the right and left with stops,
which limit the course of movement either on the one side or on the other;
d; separators of the leaves to be turned, which separators are hinged to the
slide-c, their number varies according to the number of leaves to be turned.
These separators are furnished with an axis at their fore part, which allows of
their being raised or lowered & retaining those positions; e, strips of india-
rubber fixed to the slide c, serving to hold down the separators d.; f,.inclined
planes fixed to the case 6 below the slide o; g, lever pivotted at its. lower
part, it is furnished with a metallic or other spring h to pull it back. This
lever is held between two stops 2 on the slide c in such manner that its move-
ment draws the slide c with it. i, pullies round which the cord j passes, this

page_text: cord is attached to the upper extremity of the lever g, and passes outside of
the box b, and behind the piano or organ, it thence descends over the turn-
pulley, and is attached at bottom to a pedal.
The parts being arranged as described and represented to make use of the
instrument, the back of the music leaves or book is pinched between the two
bars k represented in Fig. 3. The music so held is placed in the middle of
the bracket a, where it is held at the top and bottom by two stops. The slide
is pushed to the extremity of its course to the right, and each of the separators
d are then raised and inserted successively between the leaves of the music
which-is-to-be-turned. When-it-is-wished-to-turn-a-leaf-it-is-only-necessary-
to press with the foot on the pedal, the cord j acts on the lever g which draws
the slide c. This movement causes the first separator d to mount the incline
f, and as a consequence to turn over the leaf. On the removal of the foot
from the pedal the spring 7 brings back the lever g to its original position.
It will be readily understood that with a repetition of the same movement,
each of the. separators on advancing- up the inclinef will turn-over the leaf
with which it is in contact.. In the Drawing the leaves of music are repre-
sented in red.
I have also represented. some modifications in the accompanying Drawings
in which Fig. 4 shows a turn-leaf apparatus as it is ready to be placed on
the piano. a, knobs for actuating the pins or fingers b, b, placed between the
leaves to be turned; c, screw nut for liberating the upper part; d, music
leaves or book-holder; e & f, bars of the apparatus or music-stand shown
closed down; g, that part of the apparatus or stand which remains exposed;
h, screw pressing a spring i acting on the rods or bars e & f; j, j, sockets
receiving the bars e &f behind the lower cross bar of the apparatus.
Fig. 5 represents detail as follows:-a, holes for receiving the pins, Fig. 4;.
b, conducting rods; c, blocks, to which are attached guides d; d, distended
strip of india-rubber or elastic connected to the blocks. Fig. 6 represents
other detail of the mechanism; a, back part of the blocks receiving the pins b
inside of the case or box; c, cord attached to a bent lever, this cord passes
from the case over a pulley & under the piano where it is fixed to a pedal;
d, bent conducting lever turning on the axis e, and having a movable part f
which facilitates its return; g, spring for returning the conducting lever;
h, stop limiting the course of the lever d; i, stop for preventing recoil of the.
conducting lever when moving back, said stop turning on the axis k; j, spring
for lowering the stop i.
a,
Fig. 8 represents a lateral section of the turn-leaf apparatus and case.
section of the separating arrangement; b, blocks. receiving the pins which are

page_text: to be inserted between the leaves. These pins are raised and lowered as
herein-before described. c, rod or bar for guiding the blocks b; d, space for
enclosing the mechanism; e, slide for the music book or leaves; f, rod which
is lowered for the purpose of holding the music or leaves; g, hinge attaching
the turn-leaf music stand to the piano; h, upper cross piece; i, hinge allowing
the uprights to be folded on the case, this hinge is also seen in the front view
of the apparatus ; j, cross piece receiving the apparatus, which cross piece is
maintained at the desired height by means of the screw k; l, movable cross
piece supporting the music; m, brass or other metal uprights receiving the
apparatus and fixing it at various heights; n, o, two cross pieces which may
be separated by sliding them on the framework of the apparatus. Fig. 9
represents the detail of the contrivance which I use for separating the two
parts n&o.
Fig. 10 illustrations of the movements produced by the pedal. a, pedal
thrown back by the spring b; to this pedal is attached the cord herein-before
mentioned; c, support.
Fig. 11 shows the brass slide receiving the knob of the music book or
leaf-holder.
Figs. 12, 13, & 14, represent the music-holder; it is seen closed at Fig. 12,
edgewise at Fig. 13, and wide open at Fig. 14. a, screw, provided with a
nut b, which actuates the twin levers c, c.
Having described the nature of the Invention, and the manner of per-
forming the same, I declare that what I claim as the Invention to be protected
by the herein-before in part recited Letters Patent is,-
First, the turn-leaf apparatus, as described, having bars or separators
inserted between the leaves to be turned.
Secondly, I claim the various movements and arrangements of parts herein
described, for the purpose of actuating the said turn-leaf apparatus.
In witness whereof, I, the said William Clark, have hereunto set my
hand and seal, this Twenty-seventh day of January, in the year of
our Lord One thousand eight hundred & sixty.
Witness,
W. G. E. SWINNOCK,
58, Chancery Lane.
W. CLARK. (L.S.)