Improvements in Leaf Holders for Holding Music and the like.
Year: 1899

page_text: Date of Application, 4th May, 1899
Complete Specification Left, 13th Sept., 1899-Accepted, 14th Oct., 1899
PROVISIONAL SPECIFICATION.
Improvements in Leaf Holders for Holding Music and the like.
I, THEODORE BROOKE JONES, of Deneholme, Harrogate, in the County of York,
Chartered Accountant, do hereby declare the nature of this invention to be as
follows:
The object of my invention is to construct leaf holders for holding music and
the like in such a manner that the said leaf holders may be turned in the ordinary
way and held in position by friction, or they may be counterbalanced so as to
return to the vertical position automatically, the change from one type to the
other being effected in a most simple and effective manner, and my invention
has also reference to means whereby the position of the leaf holder may be
adjusted relatively to the music rest.
According to my invention, I employ a dovetail or other suitably shaped rail
which is attached to the under side of the music rest, and a compound slide is
carried on the rail and carries a sliding bracket on its reverse side. The outer
end of the bracket is turned up and carries a barrel the centre of which is
situated at or about the height of the centre of the music rest, and the said
barrel carries a spindle which is provided with a collar having a curved recess
or incline on its outer side, in such a manner that a cap having an internal
shoulder is held towards the head of the barrel by a spring situated between the
collar and the shoulder, and a pin in the cap which projects on the other side
of the collar, limits the pressure of the spring to the time when it rests in the
curved recess, and removes the pressure of the spring when the cap is turned
so as to cause the said pin to rise on the inclined sides of the recess. A counter-
balanced leaf holder is fulcrumed on the spindle between the barrel and the cap,
so that the pressure of the cap causes the leaf holder to work with its friction
movement, and the release of the cap as before described allows the leaf holder
to swing on its fulcrum and to continually return to its normal position by
means of the counterbalance weight.

page_text: what manner the same is to be performed, to be particularly described and ascer- .
tained in and by the following statement:
-
The object of my invention is to construct a leaf holder for holding music
and the like, in such a manner that the finger of the said leaf holder may be
turned in the ordinary way and be held in position by friction, or it may be so
balanced as to return to the vertical position automatically, the change from one
type to the other being effected in a most simple and effective manner; and my
invention has also reference to means whereby the position of the leaf holder
may be adjusted relatively to the music rest, in order to suit the various widths
and thicknesses of books.
Referring to the drawing, Figures 1 and 2 are respectively a sectional side
elevation and a sectional end elevation (drawn to an enlarged scale) of a leaf
holder constructed according to my invention shewing the finger free to balance
on its spindle, and Figure 3 is a sectional side elevation of the same leaf holder
with the finger held in position by friction. Figures 4, 5 and 6 are similar views
to those above described, shewing an alternative form of construction. Figure 7
and 8 are respectively a side elevation and an end elevation of my leaf holder
shewn adjustably attached to a music rest.
According to my invention and with particular reference to Figures 1, 2 and 3,
E is a barrel having a spindle F screwed or otherwise fixed therein, and the
outer end of the spindle F carries a collar or flange G. The collar G is cut away
at an incline at H, H, so as to form cam ways for a pin J to work in, and the
latter is carried on a cap K having an internal shoulder K¹ between which and
the collar G a spring L is held in compression. The pin J being carried on the
cap K, controls the spring L and allows the cap K to press towards the barrel E
or to be held therefrom, as desired. A counter-balance finger M is fulcrumed
on the spindle F between the barrel E and the cap K, in such a manner that the
pressure of the cap K causes the finger M to work with a friction movement,
and the release of the cap K allows the finger M to swing freely on its fulcrum.
It will thus be seen that the finger M can be used as an ordinary leaf holder
if the pressure of the spring L is allowed to act on the cap K; and if it is desired
to allow the finger M to act freely in its pendulum form, a short turn of the
cap K causes the pin J to rise in the incline H and retire behind the collar G,
thus holding the cap K from pressing against the finger M and allowing it to
swing freely.
In the alternative construction illustrated at Figures 4, 5 and 6, the spindle F
is cut off flush with the collar G, and instead of cutting inclined slots in the
sides of the said collar, its surface is cut away at H so as to produce an end cam.
This arrangement allows the pin J to be carried right through the end of the
cap K, thus obtaining a firmer construction than that of a projecting pin.
The above described leaf holder may be attached to any music rest by screw-
ing the barrel E direct into the material forming the rest; but where it is
desired to have the leaf holder adjustable to suit various widths and thicknesses
of books, I employ the arrangement shewn at Figures 7 and 8 in which a dove-
tailed rail A is attached to the under side of the music rest B, and a compound
slide C, which slides suspended under the rail A, carries on its under side a
sliding bracket D) having a turned up end D¹. The barrel E of the leaf holder
is screwed into the end D₁ of the bracket D so that its centre is at about the
height of the centre of the music rest B, and the compound slide C is provided
with a clamping screw N which permits of the sliding bracket D and rail A being
locked together.
The sliding bracket D and the compound slide C are first adjusted relatively
to the music rest B and set to suit the width and thickness of the book, when
the clamping screw N is then tightened, thus locking the barrel E of the leaf
holder in position.

page_text: 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. The improved leaf holder herein described and illustrated in the accompany-
ing drawing and comprised of a barrel carrying a spindle having a collar formed
with inclines in its sides, a pendulum finger fulcrumed on the spindle, a cap
containing an expanding spring between an internal shoulder and the collar
on the spindle, and a pin working in the inclines in the side of the collar, as set
forth.
2. The improved leaf holder herein described and illustrated in the accompany-
ing drawing and comprised of a barrel carrying a spindle-having a collar with
its end surface cut to produce an end cam, a pendulum finger fulcrumed on the
spindle, a cap containing an expanding spring between an internal shoulder and
the collar on the spindle, and a pin mounted transversely in the cap, as set forth.
3. The dovetailed rail A, and the sliding bracket D carrying a suitable leaf
holder on its upper end, in combination with the compound slide C carrying a
clamping screw N, as set forth.
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