A New and Improved Leaf Turner.
Year: 1896

page_text: A New and Improved Leaf Turner.
I CHARLES MULLER of Essex, House, Bolingbroke Road, West Kensington
in the County of Middlesex Press Tool Maker do hereby declare the nature of
this invention to be as follows:-
My invention has for its object to provide suitable means whereby to enable the
reader to turn the leaves of a music book and the like by suitable mechanism.
The essential feature of my invention consists of a series of prongs of suitable
shape and inaterial, these being kept in position by two supports or bases and
turned by a suitable crank lever which is pivoted to a suitable foot or base so as to
work freely upon a fixed rod or pin on which the prongs move. At the end of
the prongs I connect or form a washer which has an oval or slotted hole which
works on the said rod or pin. At one end of this rod or pin 1 cut and slot a groove
in which works a small stop piece, which projects from the said crank lever, this is
kept in place by a spiral spring. On one end of this crank lever I form a suitable
spring clip or catch pin so as to engage with one of the prongs and so assist in
turning it over. The spring clip or catch piu which is connected on the crank
lever so that it is always engaged with one of the prongs by the pull of the spiral
spring. On the outside of this spring clip I form two grooves on one of these
I connect the spiral spring which keeps the crank always in a certain position, that
is, to the left hand side of the music book and the like, and on the other groove
I wind a cord, this cord can be run over suitable pullies to a small treadle, and the
whole is operated by the foot of the reader.
D
thin 10th day of Webruary 1806
HORACE E. COULSON,
48 Hazlebury Road, Wandsworth Bridge Road, Fulham, S. W.,
Mechanical Engineer.
I CHARLES MÜLLER of Essex House, Bolingbroke Road, West Kensington,
in the County of Middlesex, Press Tool Maker, 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 has for its object to provide suitable means whereby to enable tue
reader to turn the leaves of a music book, and the like by suitable mechanism.
The essential feature of my invention consists in mechanism whereby a movement
of the hand or the foot either turns one leaf.
In order that my invention may be fully understood I append drawings which
illustrate two forms.

page_text: Figure 2 is a plan, and
of the apparatus.
Figure 3 an end elevation of the same.
Figure 4 is a perspective view of the pin and groove.
Figure 5 and 54 is a view of the spring.
Referring to the accompanying sheet of drawings A. designates a frame upon
which the whole of the apparatus is mounted and which may have a back a of any
convenient height against which the music rests; the frame is fixed to or rests
against the front of the pianoforte or other instrument.
The frame A has two brackets a' forming part of it and in these a pin or
rod a' is fixed, which forms a common pivot for the whole of the prongs B. Each
of these prongs is composed of three parts, the bar b, the boss 6 and the clips 6
the latter of which are intended for holding a leaf of the music. Any convenient
number of prongs may be employed and each of these is either formed integrally
with or rigidly attached to one of the bosses b' which are free to move independently
of each other. Upon the outer end of the pin or rod a² a boss C is mounted so as
to be capable of being rotated freely and it has formed in one with it a crank c.
The pin or rod a' has an inclined slot a formed in its outer end as shewn in
Figure 4 and a pin cl which forms part of the boss C is arranged to work in this
slot in such manner that during the greater part of the movement of partial
rotation of the crank the latter remains close up to the bracket al, but during
about the latter quarter revolution it is moved laterally by the action of the pin
and slot away from contact with the bracket. At the outer end of the crank a
catch pin c is inserted which while the crank boss is close to the bracket engages
with one of the prongs B and moves it. round with it, but when the slot and pin
slide the crank laterally outwards the catch pin c is pushed away from the prong B
and can move without it. The crank c is normally held in the position shewn in
full lines in Figures 1 and 2 by a light spring and a grooved pulley c is disposed
upon the frame A in such a convenient position that a cord D passing over it and
round a groove c' in the boss C on being pulled moves the crank c against the
action of the spring to the position shewn in dotted lines. When the cord is
released the spring pulls the crank back to its original position. The device is
operated as follows:-Being placed upon or attached to the front of the piano-
forte, harmonium, organ, bookstand, or the like, one leaf, of the sheet of music or
book as placed upon each of the prongs B and gripped by the clips b'. In the
drawing 7 prongs and pairs of clips are shewn, but a greater or lesser number may
be employed, it being understood that one prong and pair of clips is required for
each leaf. The whole of the prongs are then turned back to the right hand side
ɛo as to expose to the view of the performer or reader the first page. When this
front page has been played or read the cord D is pulled either by the hand or foot
as may be convenient, and operating the crank e pulls over with it the first leaf.
When this movement has been partly completed the slot a and pin causes the
crank to slide laterally outwards and when the leaf is nearly or completely turned
the catch is disengaged from the prong, and as soon as the cord D is released
from tension the crank returns to the position shewn in full lines. The points of
the catch care double and so shaped as to be pressed backwards or downwards by
the prongs to their required position against the action of a light helical spring c
until the lower point of the catch slips over the prong and as soon as it has passed
is pushed forward between the next two prongs in such manner as to lift the upper
prong when moved forward as before. When pages 2 and 3 have been read or
played the operation is repeated and the second leaf is turned.
مر
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
1. An improved leaf turner substantially as shewn and described with reference
to Figures 1. 2. 3. 4. 5 and 5ª.

page_text: 2. An improved leaf turner consisting essentially of a number of clip carrying
prongs each pivoted on the same pin and free to move independently of each other
a crank normally held on the right hand side by means of a light spring but which
can be pulled over by a cord and which in pulling over is caused to side laterally
by means of a slot and pin and so disengage a catch from one prong, and allow it.
to engage with the next, substantially as shewn and described.
3. In a leaf turner the combination of a frane, a number of prongs pivoted
thereto upon a common axis, a crank mounted concentrically with the prongs and
arranged to slide laterally by means of a slot and pin, a spring which normally
pulls the crank to the right hand position, a spring controlled catch which engages
each of the prongs in succession, and a pulley and cord which operates the crank.
and prongs substantially as described and shewn.
Dated this 10th day of November 1896.
HORACE E. COULSON,
48 Hazlebury Road, Wandsworth Bridge Road, Fulham, S. W.,.
Mechanical Engineer, Agent for the Applicant.