Year: 1899

page_text: Date of Application, 6th May, 1899-Accepted, 10th June, 1899
We, JOHANN SCHWEINFURTH II, of No. 147, Hauptstrasse, Richen, Mechanic,
and HEINRICH BECHDOLF, of No. 78, Hauptstrasse, Richen, Baden, Germany, 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:
Our said invention relates to an improved appliance for turning over sheets of
music.
In order that our said invention may be more clearly understood we will
describe it with reference to the accompanying drawings in which
Figure 1 is a front elevation, Figure 2 is a side elevation partly in section,
and Figures 3, 4, and 5 are enlarged drawings of the details.
On a desk or music carrier a are mounted two bearings e carrying a shaft b
the two ends of which are provided with toothed wheels d. A bowl or pulley e is
fixed in the centre of the shaft. The two toothed wheels d gear in the under
teeth of the racks f for the purpose of pushing the latter forwards or backwards
so that the upper reversely disposed teeth may gear in succession into the teeth
of a pinion i.
The number of the upper rows of teeth of the rack f and the number of
teeth in the pinions depend on the number of the sheets of music to be
turned over.
The pinions are mounted on shafts on the desk a being held together by
spiral springs u. They have arms k of different lengths in pairs connected
together by wires l.
The pulley e is connected by a cord g with a roller h which is mounted on a stud
or shaft secured to the piano or to the music stand. The stud or shaft also carries
a pin wheel n.
A pedal o formed as a two-armed lever and having a spring underneath acts on
the two-armed lever which a wire 9 connects with the fork lever r. In the
fork of this lever is a movable catch having a spring underneath which gears
with the pin wheel n.
The music is so arranged on the desk a that each wire 7 lies between two
leaves.
On pressing the pedal o the catch s lifts one of the pins of the pin wheel thus
turning the latter through the distance of one pin from the other and at the same
time the shaft b and the toothed wheel d are set in motion advancing the rack f
the space of one group of teeth. This produces a corresponding effect on the
pinions turning them through an angle of 180° and thus turning over the
leaf of music t lying on the upper wire. Each tread on the pedal o turns a leaf t.
For turning back the leaves of music it is only necessary to apply a second
pedal acting on the other side of the pin wheel n as indicated at s in Figure 3.

page_text: Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:-
1. An apparatus for turning over sheets of music having pinions i with arms k
connected by wires in combination with racks f having opposed teeth on both
sides thereof operated by toothed wheels d driven by a shaft b substantially.as
herein before described and set forth.
2. In an apparatus such as described in Claim 1 the combination of the levers r
having movable catches s and a pin wheel n for driving the shaft b substantially
as hereinbefore set forth and shown:
T
1000
E T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agont for the Applicants.