Improved Music Leaf Turner.
Year: 1893

page_text: Date of Application, 7th July, 1893
Complete Specification Left, 7th Apr., 1894-Accepted, 7th July, 1894
Improved Music Leaf Turner.
ARTHUR GOODERSON 103 Wattville Road Engineers Smith CHARLES
MACDONALD 101 Wattville Road Engineers Smith both of Handsworth in the
County of Stafford do hereby declare the nature of this invention to be as
follows:-
The object of our invention is to provide a means of automatically turning over
the leaves of a piece of music without requiring any movement from the hands
of the performer.
The general practice of turning over music leaves, either by the performer or
by the attendant, by hand is improved by our invention; it is applicable to musical
instruments and also to music stands.
Describing its application to the pianoforte it consists of two parts, a drum with
radiating arms fixed over key board; and a pedal rack motion fixed to or at the
base of the instrument, a connecting rod or wire is used to transmit the pedal
movement to the operating drum.
Its action is as follows-
A piece of music is placed on the rack rest, the player places each sheet he
wishes to play from, in the receptacle or holder, formed on or attached to the
respective aforementioned radial arms,-locking them by a slight pressure of the
foot upon the negative pedal, over to right; now as each sheet is required to be
turned over a slight pressure with the foot on the positive pedal will release the
locking of radial arms to which the sheet is fixed and the radial arm will instantly
go over to left by the effort of a spring, preferably of the clock spring type, fitted
in the aforementioned drum; each radial arm is provided with a similar spring
attachment; and each radial arm will swing over in succession by a touch with the
foot on the positive pedal.
The drum is arranged to fold over with the lid covering key board when required
for closing.
1000
ARTHUR GOODERSON.
CHARLES MACDONALD.
Improved Music Leaf Turner.
ARTHUR GOODERSON 103 Wattville Road Handsworth, Stafford, Engineers
Smith, CHARLES MACDONALD 101 Wattville Road Handsworth Stafford,
Engineers Smith 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 :-
The application of our improved music leaf turner to pianoforte is illustrated on
the drawings by Figs. 1, 2, 3, 4, 5, 6, 7 & 8.
Referring to Figs. 1 & 2 A is the drum with radiating arms fixed to the keyboard
Price Rd

page_text: cover, B is the pedal rack motion fixed at the base of the front board, C is the rod
connecting the rack motion with the radiating arm drum & the motion of the rack
is transmitted through the medium of the rod C to operate the radial arms, six
arms are shewn lettered D, E, F, G, H, J, at the end of each radiating arm is
fixed a receptacle K for holding the corner portion of the sheet of music, this
consists of a metallic part L with a piece M partially seperated from L which
clips the paper, when the radiating arms go over from right to left they carry the
sheets of music over also, when the radiating arms are placed over to right as
shewn on the drawing and a sheet of music placed in each receptacle K, or as
many as may be required, the radiating arms are locked in this position by a slight
pressure of the foot upon the negative pedal N when the locking pawl O &
operating pawl P are released from the rack Z by the pin Q secured to the
negative pedal N, coming in contact with the projected ends of pawls O & P, see
Figs. 7 & 8.
The negative pedal N has its fulcrum pin at R when the pawls O & P are
released the connecting rod C is raised by the lever S having fulcrum at T jointed
attachment to rod C at U & elevating weight V the upper portion W rises locking
all the radial arms. X is a knuckle joint to permit the closing of keyboard lid
when the portion W folds over on to the keyboard.
The sheets of music are turned over by a slight pressure on the positive pedal Y
which for each such pressure depresses the connecting rod C through the rack Z
the distance of one tooth in rack which lowers portion W the depth of one radiating
arm, when the spring A' causes the radiating arm to move over to left; this can
be done successively until all the radiating arms have moved over, or when any
portion of them have moved over they can be turned back to right by hand and
locked by pressing the negative pedal N. The positive pedal Y has its fulcrum
at B' the operating pawl P oscillates upon the pin C the latter being secured to
pedal Y at D' the projecting portion E¹ of pawl O is made to overbalance the part
which engages the rack thus keeping it in gear until the pin Q by depression of the
negative pedal N releases it; the bracket containing the pedal rack motion may
be screwed to the front board as shewn on the drawing, but in some cases it would
preferably be secured to the base of the instrument; the weights G'H' at ends
of pedal levers N & Y overbalance the pedals so that when the pressure of foot is
released they cause the pedals to rise ready for another operation; the brackets
marked J K (Figs. 1 & 2) are to guide the connecting rod C.
Referring to Figs. 3, 4, 5 & 6 these shew details of drum & mechanism for
operating the radial arms to enlarged scale; L' is the drum case having a base M¹
set at an angle to suit the inclined position of keyboard lid when open, to which it
is attached by screws through the holes N' the drum L' is provided with a hinge O¹
at back to facilitate it folding back into the recess of keyboard lid along with the
music rack rest P¹ (see Figs. 1 & 2). We do not confine ourselves to fitting the
music rest P¹ on to drum L' as the rest may be quite independent of same,
the drum case L' has slots formed to receive & guide each radiating arm; five are
shewn lettered D, E, F, G, H, but the number may be varied. Each radiating
arm is screwed into a box Q' containing the spring A', the spring is secured at R¹
with pin or rivet and comes against a projection S₁ formed on spindle T' this
facilitates the springs being tightened to force over the radiating arms, by turning
the spindle T a key being put on the upper square portion U₁ for the purpose, the
arms are locked by the projections Y₁ the ratchet wheel V' prevents the return
action of the spring when being tightened by the pawl W engaging with the
teeth, whereas for movement in direction for tightening the pawl slips the teeth.
When the musie turner is in operation the drum A is secured vertically by the two
radial locks X' being moved by the finger into position shewn on the drawing, when
the drum is required to hinge back for closing the keyboard lid these are radiated
to a right angle position.
When the music leaf turner is applied to other musical instruments or to music
stands the arrangement of parts will be slightly modified.

page_text: Having now particularly described & ascertained the nature of our said inven-
tion & in what manner the same is to be performed we declare that what we
claim is―
The construction of a music leaf turner having drum with radiating arms at
position of music sheets, pedal rack motion at base, connecting rod; for foot
operation; as afore described & illustrated.
Dated this 6th day of Anril 1894
ARTHUR GOODERSON.
CHARLES MACDONALD.