Improvements in Apparatus for Turning Over the Leaves of Music.
Year: 1889

page_text: Date of Application, 8th Nov., 1889-Accepted, 10th May, 1890
COMPLETE SPECIFICATION.
Improvements in Apparatus for Turning Over the Leaves of Music.
I, MAX BERMEL, of 52 Karl Strasse, Cologne-Deutz, in the Province of the Rhine,
German Empire merchant, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
My invention relates to certain improvements in apparatus for turning over the
leaves of music, whereby the player is enabled to turn over the page by means of a
pedal and consequently is not required to leave off playing in order to accomplish the
same.
In order to make my invention more clear, I refer to the accompanying drawings
in which similar letters denote similar parts throughout the different views.
Fig. 1 is a front elevation of my apparatus.
Fig. 2 is a side elevation of the same.
Figs. 3-5 show detail views of the same.
In the frame R is mounted shaft i to which is attached bevel driving wheel n'
gearing into bevel wheel n. Bevel wheel is attached to the end of shaft d, pro-
jecting vertically through the top part of frame R and guided in tube R. To the
upper end of shaft & tho arm e is attached having at its other ond guide ƒ for guiding
rod g vertically. To the other end of rod y the catch is fixed.
The rings to which the wires m¹ m² are attached, lie loosely round shaft d above
one another, one wire being attached to each ring; the wires are bent rectangularly
downwards and the lower end of each wire lies loosely behind one leaf of the music
book. The rods bb fixed in the upper part of frame R act as stops preventing
wires m² m² from turning to far round. The wires are operated by catch &;
catch k, as will be seen in fig. 4, has a notch ¹ in its under side and is of greater
diameter than rings . The shoulder comes behind the top wire m' and as the
arm describes a semi-circle, the wire is pushed forwards the same distance by
shoulder k².
The front end of shaft i projects through frame R and has the lever attached to
it (fig. 5); the one end of lever his formed to a hook whilst the other projects
through on the other side of shaft i and is under influence of spring r fixed to
frame R.
To the hook end of lever is attached a chain communicating with a pedal pivoted
to the lower part of the music stand.
The front part of frame R is prolonged downwards having slit 7 and serves for
the attachment of the apparatus to music stand. The same is attached by means of
plate P (fig. 3). The projection o on plate P fitting into the slit of the frame.
Plate P is screwed to the music stand by the two screws ss and has further two set
screws pp by means of these set screws and slit 9 the apparatus can be vertically
adjusted on the stand, so as to fit in any size of the music book.
When the apparatus is lowered to fit a smaller book, the chain connecting lever h
to pedal can of course be correspondingly shortened.
The apparatus works in the following manner:
The top wire m' lies behind the first leaf to be turned over; the second wire
behind the second leaf and so on.
On pressing the pedal with the foot, the lever will be drawn downwards, thereby
turning driving wheel n¹ which rovolves bevel wheel n and with it shaft d, arm i and
catch the shoulder of which lies behind wire m'.
Wire m' will thus be turned round
from the pressure of the foot, spring
thus rotating driving wheel 'n' back.
until it strikes stop b.
presses the other end
The catch & will travel
On releasing the pedal
of lever downwards,
backwards alone untiĺ

page_text: its shoulder k² falls down by the weight of rod g behind wire m²; it may be prevented
from turning too far backwards by a stop on the pedal. Upon pressing the pedal a
second time, the operation again takes place as described.
Music books will remain in place on the stand of their own weight during the
operation of the apparatus, whilst loose leaves may be fixed in place by means of a
wire hinged at its upper end to the stand and having its lower end detachably fixed
to the stand in tho usual manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1.) The mechanism for turning any number of wires m m², consisting of catch on
spindle g vertically guided in the end of arm e; arm e being operated by shaft d and
bevel wheels n n', in the manner substantially as described.
2.) The mechanism for turning any number of wires lies behind the leaves of a
music book, consisting of the combination of catch mounted on spindle g vertically
guided in the end of arm e, and operating rings of the wires; arm e on shaft d
worked by a pedal connected with arm A, and by spring r, with intermediate bevel
gearing, as specified.
Dated this 8th day of November 1069.
MAX BERMEL.
By Fredk. Walker & Hyde,
4, Little Moorfields, London, E.C., Agents for the Applicant.