Year: 1888

page_text: Date of Application, 28th Apr., 1888
Complete Specification Left, 28th Jan., 1889
Complete Specification Accepted, 2nd Mar., 1889
I, ALEXANDER CARR, of 56, Godwin Road, Forest Gate, in the County of Essex,
Engineer, do hereby declare the nature of this invention to be as follows:-
In apparatus according to my invention the leaves of a music book or of a piece of
music or the like are turned over one at a time from right to left or left to right as
required by means of nippers. carried by levers pivoted to arms, each of which
projects from a tube, the tube of one arm being within the tube of another and the
whole placed on a vertical shaft or spindle which also has a similar arm and lever
attachment.
Each tube and the shaft or spindle is provided with a small antifriction wheel or
roller and surrounding the whole is a tube I will call the cylinder, the inner surface of
which projects and slotted in such manner as to form a cam which is brought into
contact with the small antifriction wheels or rollers, when the cylinder is moved
longitudinally up or down from its normal position, as the arms are required to be
turned from right to left, or left to right.
On the outer surface of the cylinder there is a curved plate with undulations at one
edge corresponding in number with the small antifriction wheels or rollers-On these
undulations runs a small wheel or roller carried on the end of a lever that moves longi-
tudinally with the cylinder; this arrangement is for the purpose of preventing
lateral movement of the cylinder whilst it is being moved longitudinally, excepting at
one part of the return stroke of the cylinder when a projecting part of the cam is
brought in contact with the small antifriction wheels or rollers and causes the cylinder
to move round to the left or right; the small wheel or roller will then be shifted. from
one curved indentation to another accordingly. A spring is, or may be, used to keep.
the wheel or roller in contact with the undulated surface of the plate.
Through suitable connections the cylinder can be caused to move up or down
from its normal position by means of a pedal and lever movement operated
by the foot, and by means of a spring is caused to. return to its normal position
again.

page_text: When the cylinder is moved up or down it causes one of the before mentioned tubes
with its arm to make a partial rotation carrying with the arm the lever pivoted
thereto.
Each lever has in its shorter arm a curved slot through which extends a pin
projecting from the arm of the corresponding tube and the lever arm is of gradually
increasing width towards its end forming two inclined surfaces, against one or other
of which as the stroke of the arm approaches completion from right to left or left to
right, one of two adjustable stop pieces or levers is brought to bear, so completing
the stroke.
The stops or levers just referred to, in addition to assisting to complete the stroke
are made adjustable to vary the stroke according to the thickness of the book or piece
of music being used, and each has a spring which allows the stop to be depressed as
required when the book whose leaves are being turned is thicker than the extent for
which the stops have been set. The opposite end of each spring passes under a plate
which is intended to hold the stop firmly in any position in which it may be placed.
Dated this 28th day of April 1888.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: Apparatus for Turning Leaves of Music Books and the like.
I, ALEXANDER CARR, of 56 Godwin Road, Forest Gate, in the County of Essex,
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 :-
In apparatus according to my invention the leaves of a music book, or of a piece of
music, or the like, are turned over one at a time from right to left, or left to right as
required, by means of nippers carried by levers pivotted to arms each of which
projects from a tube, the tube of one arm being within the tube of another and the
whole placed on a vertical shaft or spindle which also has a similar arın and lever
attachment:
Each tube and the shaft or spindle is provided with a small antifriction wheel or
roller and surrounding the whole is a tube, I will call the cylinder, the inner surface.
of which projects and is slotted in such manner as to form a cam which is brought
into contact with the small antifriction wheels or rollers when the cylinder is moved
longitudinally up or down from its normal position as the arms are required to be
turned from right to left or left to right.
On the outer surface of the cylinder there is a curved plate with undulations at one
edge corresponding in number with the small antifriction wheels or rollers.
On these undulations runs a small wheel or roller carried on the end of a lever that
moves longitudinally with the cylinders; this arrangement is for the purpose of pre-
venting rotary movement of the cylinder whilst it is being moved longitudinally,
excepting at one part of the return stroke of the cylinder when a projecting part of
the arm is brought in contact with the small antifriction wheels or rollers and causes
the cylinder to move round to the left or right; the small wheel or roller will then be
shifted from one curved indentation, to another accordingly.
A spring is or may be used to keep the wheel or roller in contact with the undulated
surface of the plate.
Through suitable connections the cylinder can be caused to move up or down from
its normal position by means of a pedal and lever movement operated by the foot and
by means of a spring is caused to again return to its normal position.
When the cylinder is moved up or down it causes one of the before mentioned tubes
with its arm to make a partial rotation carrying with the arm the lever pivotted thereto.
Each lever has in its shorter arm a curved slot through which extends a pin projecting
from the arin of the corresponding tube and the lever arm is of gradually increasing
width towards its end forming two inclined surfaces against one or other of which as the
stroke of the arm approaches completion from. right to left, or left to right, one of two
adjustable stop pieces or levers is brought to bear so completing the stroke. The stops
or levers just referred to in addition to assisting to complete the stroke are made ad-
justable to vary the stroke according to the thickness of the book or piece of music
being used, and each has a spring which allows the stop to be depressed as required!
when the book, whose leaves are being turned, is thicker than the extent to which the
stops have been set. The opposite end of each spring passes under a plate which is
intended to hold the stop firmly in any position in which it may be placed.
:

page_text: Fig. 1 is a vertical section of an apparatus for turning leaves of music and the like
according to my invention.
Fig. 2 is an elevation of that part of the apparatus comprised in the music stand or
bolder with the front plate removed.
Fig. 3 is a plan of the same, partly in section.
Fig. 4 is a horizontal section.
Fig. 5 is an elevation at right angles to Fig. 3 with the end of the music stand or
holder removed.
Fig. 6 shews the cylinder and the parts connected with it in section.
Fig. 7 is an inverted section of Fig. 6.
Fig. 8 is a section in line a-b Fig. 6.
Fig. 9 is a development of the cam on the inside of the cylinder, and of the group
of rollers acted upon by the cam.
Figs. 10, 11 and 12 shew a modification.
The music, the leaves of which are to be turned, is placed on the stand 1,
which has a flap 2 by which its width can be increased. Each leaf of the
piece of music is gripped by a pair of nippers.3, the jaws of which are held
together by a spring and can be forced apart by pressure on the finger 4 (Fig. 5).
Each pair of nippers is carried by a lever 5 pivotted to an arm 6 (Fig. 3) pro-
jecting from a tube 7, or from the spindle 8 (Fig. 6). The number of tubes is one
less than the number of arms, and the various tubes are arranged concentrically about
the spindle, one within the other (Figs. 6 and 7).
Each tube 7 and also the spindle 8 carries a disc 9 from which there projects a
bracket 10 carrying an anti-friction roller 11.
The lengths of the brackets 10 are such that all the rollers are in the same plane, as
clearly shewn in the development (Fig. 9), while the breadths of the brackets and the
diameters of the rollers are such that they only occupy a little more than half the cir-
cumference of the circle in which they stand (Fig. 8).
The lower portions of the tubes 7 are enclosed within the cylinder 12, which carries
within it a cam 13, shewn in development in Fig. 9.
When the cylinder 12 is moved endwise by means to be presently explained the
cam path catches the first of the rollers 11; and carries it round,.rotating the cor-
responding tube 7 to which the roller is attached..
Supposing the parts are in the positions shewn in Figs. 6 to 9, and the cylinder is
moved downwards, it is evident that the first roller will be caught by the point of the
cam path, and its tube will be rotated through the portion of a circle corresponding to
the piece of cam path 14-15. The cam will also tend to rotate the cylinder, but this
tendency is resisted by the undulated plate 20 and roller 21..
This roller is carried by the arm 22, which is held down by the spring 23. If how-
ever a greater rotative force be exercised on the cylinder than this spring is able to
resist, the roller will mount the edge of, the undulation and fall into the next depression.
Such a force is brought to bear on the cylinder on the return stroke of the cam.
the down stroke, the cam leaves the roller 11 at the point 15, and on the upstroke it.
meets it again at the point 16.
On
But as the roller 11 can go no further, the cam itself is obliged to rotate with the
cylinder, putting itself into position to take the next roller and tube at the succeeding
stroke. If, however, it is desired to turn back the page just moved the cylinder is
operated in the opposite direction, and the roller 11 with its tube 7 carried from 17 to 18.
The cylinder is moved up and down by the collar 24, and clutch fingers and rollers
25, 25 fixed on the bracket 26, sliding on the guide rod 27. The bracket receives
motion from the pedals 37, 37, through the bellcrank 28, rod 29 in the arm 30, hell-
crank 31, rod 32, bellcrank 33, rod 34, bellcrank 35 and rod 36. The rod 32 is
continued downward, and carries two springs 38 and 39 one of which serves to return
it when raised, and the other when depressed by the pedals. When a pedal is operated
it moves the cylinder 12 endwise, as already explained and partially rotates one of
the tubes within it. With the tube there moves the arm 6 on which is pivotted

page_text: the lever 5. The connexion between 5 and is made by the pivot pin 5", and a
pin in the slot 5. The inner end of each lever 5 is mado with two inclined sur-
faces which at the ends of their movements come against an adjustable spring stop
piece 40.
-
The effect of the contact of the above mentioned inclined surfaces with the stop
pieces is to complete the stroke of the lover by rotating it on the pivot 5. The
adjustable spring stop pieces 49, 40 take each a bearing against a spring which
gives way when too great pressure is brought to bear upon it. 41, 41 are other
adjustable stop pieces which limit the motion of the armis 6, 6. They can be set
by the rods 42, 42 and knobs 43, 43. Figs. 1), 11, 12 show a modification in
which the tubes 7 are replaced by a series of rods 7" arranged in a circle. Each
of these rods which carries an arm 6 and lever 5, is formed on its inner side with an
extension having an eye 7b that encircles the shaft & and at its outer side carries a
roller 11, that is acted upon by the cam 13, in a similar manner to the rollers 11 on
the tubes 7. The mode of operation is the same as that already explained with
reference to the former figures.
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. In apparatus for turning leaves of music and the like, the combination of nippers
carried by radial levers, with tubes or bars which are turned successively by a cam
substantially as described.
2. In apparatus for turning leaves of music and the like, the combination of nippers
carried by radial levers, with arms attached to the extremities of concentric tubes, or
of bars, which are turned successively by a cam substantially as described.
3. In apparatus for turning leaves of music and the like, a cam, such as 13 in com-
bination with rollers connected to concentric tubes or to bars each of which carries a
lever provided with nippers substantially as described.
4. In apparatus for turning leaves of music and the like, a cam capable of being
moved end wise in combination with an undulating plate 20, and roller 21 to prevent
its rotation until it meets with a fixed object substantially as described.
5. In apparatus for turning leaves of music and the like a double cam, such as 13,
connected to two pedals, and so arranged that when one pedal is pressed, the cam is
moved in one direction to turn the pages from left to right, and when the other pedal
is pressed, the cam is moved in the other direction to turn the pages from right to left
substantially as described.
6. In apparatus for turning the leaves of music and the like, pivotting each of the
radial levers which carries the nippers to the arm from which it derives its motion, the
arrangement being such that the radial lever may have a greater range of motion than
the said arm substantially as described.
7. In apparatus of the kind herein referred, to the combination of the radial levers 5
each formed with inclined surfaces at one end and carrying a nipper at the other
end pivots 2, arms 6, and spring stop pieces 40 substantially as described.
8. The improved apparatus for turning the leaves of music, constructed, arranged
and operating, substantially as described with reference to Figs. 1 to 9, or modified as
described with reference to Figs. 10 to 12 of the drawings annexed.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.