DE29608300U1 - Flute mouthpiece with frequency regulator - Google Patents

Description

The invention relates to a flute mouthpiece

(according to the preamble of patent claim 1)

Such mouthpieces are particularly well known for recorders. The sound is produced simply by blowing air into the core gap.

The disadvantage, however, is that the player has little influence on the pitch. It is also known that when playing softly (piano) on the recorder, all notes drop in pitch (frequency reduction dependent on blowing pressure). This severely limits an important part of the dynamics and musical expressiveness. Only top players can achieve the required pitch with a few notes using complicated alternative fingerings, and therefore prefer not to play the piano. It has also not been possible to create crescendos and decrescendos while playing the recorder due to the frequency fluctuations.

Likewise, until now, instrument-related frequency impurities while playing the recorder could not be compensated for.

It is therefore the object of the invention to design a flute mouthpiece of the specified type in such a way that even quiet playing on the recorder is possible without a drop in frequency.

A further object of the invention is to expand the possibilities of modern to experimental playing at normal volume by allowing the pitch to be raised in micro intervals. In this way, instrument-related frequency impurities can also be compensated for while playing the recorder.

Furthermore, it is an object of the invention to also enable the introduction of crescendos and decrescendos into the playing of the recorder.

This object is achieved according to the invention as follows (characteristic of patent claim 1).

The flute mouthpiece of the invention offers the possibility of opening a channel to the outside through an internal valve without a flap, which makes it possible for the first time to change the sound frequency in the simplest way. The changeability is at constant blowing pressure, depending on the path of the push button, up to approx.

Cent micro-intervals and extends to all notes of the range.

The ability to change the tone frequency with the flute mouthpiece according to the invention means that the frequency remains the same when playing quietly, as any fluctuation can be compensated for by pressing a button. On the other hand, when playing at a normal volume, the pitch can be raised in micro-intervals and a crescendo or, conversely, a decrescendo is possible when the button is pressed slowly.

Another significant advantage is the ability to immediately compensate for small frequency deviations in individual tones, which occur in every wind instrument to a greater or lesser extent depending on the instrument.

The idea behind the invention was to find a solution that was as inconspicuous as possible to accommodate the technical part of the invention as invisibly as possible inside the flute mouthpiece, since recorders with a simple design, without keys, levers or rods, are preferred (patent claim 2).

Since the sound of almost all wind instruments is influenced by the mouth, it was logical to develop a mechanism that can also be operated by the mouth. The simplest way to do this was to use a push button (7) in the blowing area (patent claim 3). The simplicity of the technical solutions is complemented by the connection of the push button (7) to the valve spindle (4) as a direct unit (patent claim 4), with both parts being connected with a thread and thus being able to be variably adjusted.

All parts are inexpensive to manufacture, so that even inexpensive student instruments can be equipped with them.

The invention is explained in more detail below using an example with reference to the drawing. The drawing shows a vertical longitudinal section through a flute mouthpiece according to the invention:

The flute mouthpiece (1) has a longitudinal bore (14) and a labium (13):

On the side of the lower lip attachment, a core (2) is inserted into the longitudinal bore (14) which only partially penetrates into it, on the upper side of which the blowing channel (12, core gap) is located and in the lower area of which a bore (15) is made. On the blowing side, the bore (15) changes into an enlarged bore (16). The bore (15) is

equipped with a guide tube (3) that is pressed in tightly and movably accommodates a valve spindle (4).

On the side of the core (2) facing the inside of the mouthpiece there is a conical valve (6) with a thinner shaft (5). When closed, the valve (6) sits in the elongated conical valve seat (18). When the valve (6) is opened using the push button (7), the valve moves along the longitudinal axis of the mouthpiece towards the inside of the mouthpiece and continuously releases an air connection to the outside via the vertical bore (9).

On the side of the core (2) facing the blow-in side, a stop cushion (11) and a compression spring (8) are inserted into the bore (16). The push button (7) is screwed with its thread (17) onto the thread of the valve axis (4) and secured with the locking screw (10).

Summary

In a flute mouthpiece, the core inserted on the blowing side has a horizontal thrust axis in its lower section, which is designed as a valve on the inside of the mouthpiece, which, in the open position, creates an air connection from the inside of the mouthpiece to the outside. The mechanism is operated by a push button, which is attached to the valve axis emerging on the mouth side, with the lower lip area of the mouth.

With this mouthpiece, all notes of the flute can be changed in frequency in the range of micro-intervals using a largely invisible valve mechanism.

Claims (6)

Flute mouthpiece with frequency regulator ■ nnforderungen 1. Flute mouthpiece consisting of a mouthpiece body provided with a longitudinal bore, a core inserted into the longitudinal bore at one end of the mouthpiece body, an essentially square cut-out formed in the area of the core end located inside the mouthpiece in the upper side of the mouthpiece body, the transverse edge of which facing away from the core is designed as a labium and merges into an inclined surface which widens the opening forming the cut-out outwards, and in which the upper surface of the core and the wall surface of the longitudinal bore adjacent to this surface are spaced apart from one another and form a core gap, the core gap having an inlet opening at one end and an outlet opening at the other end facing the labium, characterized (see drawing) in that the core has a longitudinal bore (15) which is equipped with an immovable guide tube (3) in which a movable axis (4) which has a thinner shaft (5) with a conical valve (6) on its side facing the inside of the mouthpiece and a push button (7) on its side facing the blowing side, which is held back in the direction of the mouth by a compression spring (8), closes the valve (6) in the inside of the mouthpiece via the axis (4), opens the valve (6) in the opposite direction and thereby releases an air channel from the inside of the mouthpiece to the outside via a vertical bore (9) provided under the mouthpiece. 2. Flute mouthpiece according to claim 1 characterized in that all described parts of the invention, except a part of the push button (7), are mounted inside the mouthpiece. 3. Flute mouthpiece according to claims 1 and 2 characterized in that the valve mechanism is operated (without the aid of fingers and without the aid of external rods, buttons or couplings) only with the mouth area, in particular the lower lip. W WW WW Ww · 4. Flute mouthpiece according to claim 3 characterized in that the push button (7) and the valve spindle (4) are connected to one another by threads and the stroke can be variably adjusted by a locking screw (10). 5. Flute mouthpiece according to claim 1 characterized in that the conical valve (6), coming from the likewise conical funnel (18), only gradually opens the channel and thus also enables a slow change of the frequency. 6. Flute mouthpiece according to one of the preceding claims (not shown in the drawing) characterized in that the valve mechanism can also be replaced by a flap which is mounted from the outside in the wall of the longitudinal bore (14) and is actuated via an external rod.