Improved Apparatus for Holding and Turning Over the Leaves of Books, Music, or other Papers.
Year: 1889

page_text: Date of Application, 1st Nov., 1889-Accepted, 28th Dec., 1889
COMPLETE SPECIFICATION.
Improved Apparatus for Holding and Turning Over the Leaves of
Books, Music, or other Papers.
We, CYRIL PECK BROWN (Physician) and WARREN GEE (Capitalist) both of State
Street, Spring Lake, Ottawa, in the County of Michigan, United States of America,
do hereby declare the nature of this invention and in what manrer the same is to
be performed, to, be particularly described and ascertained in and by the following
statement:
The object of this invention is to provide an instrument for turning the leaves
of music, printed matter, or manuscript, quickly and with certainty in either
direction.
The Invention consists in the combination of a series of arms, each provided with a
loop at one end and a folding leaf-holding fork at the opposite end, a support for the
loops, and a key pivoted to the centre of the instrument and carrying a double-
acting catch adapted to engage the arms upon either side of the instrument.
The Invention also consists in the combination, with the leaf-turning arms and key,
of a holder for loose sheets of music, printed matter, or manuscript.
It also further consists in the combination, with the support of the leaf-turning
mechanism, of folding arms for supporting a book.
Reference is to be had to the annexed drawings, forming part of this specification,
in which figure 1 is a front elevation of the improved leaf-turner. Figure 2 is a plan
view. Figure 3 is a detail side view of the key lever. Figure 4 is an inverted
horizontal sectional plan view taken on line a figure 1. Figure 5 is a perspective
view of the end of one of the leaf-turning arms, shewing the leaf-holding spring
unfolded.. Figure 6 is a perspective view of one of the arms, shewing the leaf-holding
spring folded.
Figure 7 is a perspective view of a holder for single sheets of music,
and figure 8 is a front elevation of the same. Similar letters of reference indicate
corresponding parts in all the views.
To the back piece A is secured the plate B which supports the mechanism of the
leaf-turner. The plate B is provided with ears a projecting from its upper edge at
right angles with the face of the plate forming a support for the lower edge of the
book and upon the centre of the plate B is formed a bracket to the upper part of
which is attached an arm C terminating in a disc c, the said dise having upon the
under surface thereof, the U-shaped projection & provided with a groove e in its outer
edge. In the disc e there is a slot extending from the centre thereof through the
arm C to the plate B. The arm D, which turn the leaves of music, are provided
at their inner ends with L-shaped loops g which embrace the disc c and the
U-shaped projection d. To the outer end of each arm D is pivotally attached a
spring-wire fork h, the fork being provided with an eye i (figures 5 & 6) which is held
in place by the screw or pivot entering the end of the said arm D. The spring-
To the
wire forks are adapted to receive between them the leaves to be turned.
under surface of the arm C is pivoted a key lever E which is held in a central
position perpendicular to the plate B by angled springs k¹, the said springs being
secured to the back of tho plate B with their angled ends extending through apertures
in the plate and bearing against opposite sides of the key-lever.
This construction
permits of moving the key-lever in either direction, as may be required. To the
upper surface of the key-lever E is pivoted a curved arm F provided at opposite ends
with hooks (figure 4) and with shoulders m m which project inwardly a distance
a little greater than the length of the books, the said hooks and shoulders being
oppositely arranged with respect to each other and located opposite the groove e in
the projection d. A straight spring a secured to the top of the key-lever E projects
into a notch o and tends to hold the curved arm F normally in a central position.

page_text: The leaves to be turned are inserted in the spring-wire forks h. By turning the
key-lever E in one direction-say towards the left, as indicated in dotted lines in
figure 4--the shoulder m' is made to ride over the L-shaped loops y until it escapes
the last loop when it permits the hook to engage that loop and a further movement
of the key-lever E carries the arm D over towards the other side of the leaf-turner.
When the key-lever E is released, it.is.returned to its central position by the spring k
and when again pressed towards the left it takes the next arm D in order by
engagement with its loop g in the manner already described. This operation may
be continued until all of the arms D are transferred to the left side. By reversing
the motion of the key lever E the hook will be brought into engagement
with the loops g of the arm D and the arms will be transferred from the left to
the right side.
The back piece A is provided with folding arms p p which serve as supports
for the book placed on the leaf-turner and also as supports for the leaf-turner.
When it is desired to hold a series of sheets of music or other papers, a leaf-holder G
is provided, which is capable of holding one or more pieces of music. The bars q¹
forming the body of the holder are perforated to receive the wires which are
furnished with loops s for engaging the bar and are pivotally connected with
springs secured to the bar q'. In a slot in the centre of the bar q is pivoted an
eccentric H which, when turned, bears upon the bar g¹ and separates the two bars
so that sheets of music can be introduced between them. When the eccentric H
is released, the springs draw the bars together and clamp the music. In the
lower end of the bar is inserted a dowel u which fits into a hole in the top of the
plate Band to the side of the bar q¹ is attached an offset wire arm w which is adapted
to enter a hole y in the upper edge of the back piece A and to the side of the bar ¹ is
secured a cleat which bears against the face of the back piece A and serves to steady
the leaf holder G.
Although the improvement is described as applicable to holding and turning sheets
of music, it is not confined to that use as it may be used for holding and turning
papers of any description.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is;
1. In a leaf-turner, the combination of a support and guide, a series of arms placed
on the support and guide, a spring-pressed key-lever, and a double hook carried
by the key-lever and adapted to engage the arms in succession, substantially as
specified.
2. In a leaf-turner, the combination of the supporting-plate B, disc c, the grooved
U-shaped guide attached to the said disc, the arms D provided with L-shaped loops g,
the key-lever E, the springs kk, the curved arm F pivoted to the key-lever E and
provided with hooks
and projections m m³, and the double-acting spring n, sub-
stantially as specified.
3. In a leaf-turner, the combination of the clamping bars 9 9', the springs t, wires r,
and eccentric H, substantially as specified.
4. In a leaf-turner, the combination of the clamp G provided with the dowel i and
wire w, and the back piece A, substantially as specified.
5. In a leaf-turner, the combination, with the back piece A, of the folding arms p p²,
substantially as specified.
Do
CYRIL PECK BROWN..
WARREN GEE.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.