IMPROVED APPARATUS FOR TURNING OVER THE LEAVES OF MUSIC
Year: 1884

page_text: I GEORGE BROCKELBANK of 27 Beverley Road Anerley in the County of Surrey
Gentleman do hereby declare the nature of my Invention for. IMPROVED APPARATUS
FOR TURNING OVER THE LEAVES OF MUSIC to be as follows:-
My invention for turning over the pages of music consists in an upright column
placed on the top of the music desk or stand on which at a suitable distance from
the top I fix a round flat plate as a base for other moveable flat plates to rest upon
which are smaller than the base plate. These plates are of a lesser diametor on
one side than the other by an eighth of an inch about. To the widest side of these
plates I fix thin stiff wire arms one to each about twelve inches long six of which
extend horizontally and six are bent down nearly at right angles for the purpose
of being placed between the leaves of the music, other plates very thin are fixed
between the moveable plates-On top I place a hollow pulley wheel or barrel in
which is a watch spring, outside of which is a kind of pawl catch or ratchet which
resta on the steel arm so shaped that the catch part falls down behind the said arm
so that when the hollow pulley or barrel is moved the pawl catch or ratchet forces
the arm before it. This catch, part behind the said arm must not be more than
the depth of the said arm or it will take two arms round at once. Attached to
this pawl catch or ratchet is a spring or other contrivance which forces it into its
place. A guide is also fixed on the said pawl catch or ratchet-Having thus far
completed my invention I fix a cord on the pulley or barrel and pass it over the
side of the piano and make the end fast to the pedal frame, and when the foot is
pressed upon the said cord the pulley or barrel is pulled round, bringing the paw!
catch or ratchet with it, which pushes the arm before it and consequently the page
of musich behind which the arm has been placed. Immediately the foot releases
the cord the spring inside the pulley or barrel brings back the pulley or barrel, the
pawl catch or ratchet, to the starting point resting on the side of the second plate
when it falls into gear ready to act upon the second arm and consequently the
second leaf. To the pawl catch or ratchet I fix the means for lifting it that the
arms may be placed in their proper position-Stops and checks are placed on the
base plate one at the starting point another when the arm has gone sufficiently
far to turn over the leaf.

page_text: 'I GEORGE BROCKELBANK of South Penge Park Anerley in the County of Surrey
Gentleman do hereby declare the nature of my invention for " IMPROVED APPARATUS
and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
FOR TURNING OVER THE LEAVES OF MUSIC
statement:-
"
The object of this Invention is to provide simple and efficient means for turning
⚫over the leaves of music
In the accompanying drawing
Figures 1 & 2 are respectively a side view, and a front view of the apparatus.
Figure 3. Is an elevation of the bed plate, upright column or vertical axle, and
stop-pin respectively.
Figures 4 & 5, are views of the fixed plates.
Figures 6&7 are views of the moveable plates, and arms respectively.
Figures 8 & 9 are views of the pulley or watch-barrel, and the main spring
respectively.
Figure 10 shows the pulley at the starting point A with an arm ready to be
acted upon, and other armis already noted upon, and stopped at B.
Figure 11-Is a vertical section of figure 10.
Like letters indicato corresponding parts throughout the drawing.
In carrying my invention into practice I provide an upright column or vertical
axle, a fig 3. of brass or other suitable metal, fixed to a bed-plate, a' fig 3, which is
placed in a convenient position on the music desk or stand. On this upright column
or vertical axle I place a series of flat moveable plates, & fig 6: of brass, or other
suitable metal, which moveable plates, are respectively cut; or filed away at one
side as shown by fig 6, to allow à pawl or catch f*, f* to work for the purpose of
'causing them to partially revolvo on the aforesaid upright column, or vertical
axle, a fig 3. Between the moveable plates, b fig 6, I placo other thinner plates, &1
fig 5, of suitable material, which last mentioned plates; b¹ fig 5; are fixed by small
projections, & fig 5, in which projections respectively a stop-pin, d¹ fig 3, is fixed
in the aforesaid bed-plate fig 3 as shown by fig 4. The herein before
mentioned thinner plates, b' fig 5, are of the same shape as the moveable plates, b
6g 6, except where the stop-pin, d¹ fig 3, is fixed for the purpose of preventing two
of the said moveable plates, b, fig 6, from partially rotating together. To the
moveable plates; big 0, are attached arms of steel, or other suitable wire, & figa 6
& 7, which arms are bent at right angles, and respectively form an elbow as shown
by figs 1 & 2. To the side of each of said arms; dfigs 6 & 7. I attach below the
elbow a piece of wire, e fig 2, which is bent at right angles, and extends a con-
venient length alongside the said arm, but is separate from it. Between said pieco
of wire, e fig 2, and the arm, & figs 6 & 7, a leaf of music is slipped, and is held fast
as if by the fingers, as shown by figs 1 & 2. The moveable plates; big ¤, and
arms, d figs 6 & 7 are put into motion by the means and in the manner which
I now proceed to describe.
In a convenient position on the aforesaid upright column or vertical axle, a
fig 3, I place a pulley or watch-barrel, o' fig 8, inside of which is a main spring, e³

page_text: arm,
fig 9, for the purpose of bringing back the said pulley, e¹ fig 8, when it has been
forced round from the starting point, A figs 1 & 2, to the stop, B figs 2 & 10.
Outside to said pulley, c¹ fig 8, I fix another spring, f fig 8, which acts on a square
guide-rod, f figure 8, which travels up and down in a square slot in the pulley, e¹
fig 8. At the end of the guide-rod, fi figure 8, which travels up and down in the
square slot in the pulley, e¹ figure 8, is a foot-shaped catch, f fig 8, the toe of
which catch rests alternately on each of the moveable plates, b fig 6, and the heel
falls behind the arm and moveable plate within the part of the plate, 6 fig 6,
which is not cut or filed away as hereinbefore mentioned and thus forms a catch
or ratchet, and consequently, when the pulley is put into motion, a moveable plate,
and leaf of music are respectively pushed round until said arm is stopped at
the point, B fig 2. On the pulley, e' fig 8, is a projection, or pin, g¹ figs 2 & 8
which serves as a stop and prevents the spring, e fig 9, from pulling round the
pulley beyond the starting point, A figs 1 & 2. Directly the pulley, el fig 8, is
released, it leaves the arm, d³ fig 7, at the point B, and is brought back to the
starting point, A, by the spring, o fig 9, and brings with it the catch or ratchet
resting against the portion of the next moveable plate which is not cut away until
it comes to the starting point, A, figs 1 & 2, when the heel of the catch, f' fig 8, is
forced behind the next arm and moveable plate by the spring, f fig 8, ready to be
acted on as the first. To adjust and put in its place the catch, o, when the leaves
of music are interposed between the arms, d³ figs 6 & 7, and the piece of wire, e
fig 2 ready to be turned, several ways may be adopted. One way is by making
the foot of the catch and the part of the moveable plate, on which it rests inclined
planes, so that it is only necessary to force each plate under the foot, and the catch
and guide rise until the catch is adjusted ready to move round the first arm and
leaf of music, as shown by f, Where the foot of the catch is not an inclined
plane, as in c, it has to be adjusted by the hand with a small lever. To accomplish
the turning of the leaves of music with the foot, I fix a cord, wire, or catgut, gå
fig 2, to the projection, g' fig 2, on the pulley, e¹ fig 8, which cord, wire, or
catgut, g³ fig 2, passes round at the back of said pulley through a hole, g³ fig 1,
therein, and extends a few inches from the apparatus. To said cord, wire, or
catgut, I attach a piece of cord sufficiently long to pass round the side of the piano,
and reaching to the foot or knee of the performer, or tied to the pedal-frame of the
instrument. If tied to the pedal frame directly the foot is placed on the cord it
pulls the pulley round, and with it the guide-rod, and catch, and consequently the
inoveable plate, arm, and music leaf. As soon as the foot releases the cord the
pulley returns as hereinbefore described, ready to act upon another moveable plate.
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
The combination and arrangement of the various parts of the apparatus herein-
before described substantially as and for the purpose hereinbefore described and
illustrated by the accompanying drawing.
Dated this 18th day of May 1885.
GEO. BROCKELBANK,
P. O'Halloran, Patent Agent,
28, Southampton Buildings, Chancery Lane, W.C.