DE238629C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

238629 CLASS 51 e. GROUP

LUDWIG HUPFELD ACT-GES. in Leipzig.

Tuning device for string instruments. Patented in the German Empire on July 14, 1910 .

The purpose of the present tuning device is to tune the strings mechanically played string instruments, be it stringed, plucked instruments or the like, to facilitate-

For this purpose, the device is designed in such a way that the tone to be tuned, which is in known way by simultaneously sounding the corresponding tone of an instrument

o mentes tuned with a constant mood becomes, together with this comparison tone through the use of a valve, an electric one Contact or the like is made to sound mechanically.

You can use special instruments that are only used for tuning, such as pipes, Use reed voices or the like or also with string instruments connected to pianos the relevant tone of the piano

° make it sound. The strings of the string instrument then offer no difficulty or the like. To tune in correctly by means of the pegs.

In the drawing, the device is shown in one embodiment, namely a pneumatic device is chosen as an example, as is the case with most mechanical musical instruments can currently be played pneumatically.

With such instruments, painting or striking a tone is usually done in that through a hole in the sheet of music guided over a sliding block Channel is exposed, through which then atmospheric air can enter and the valves of the Can move bellows in a known manner.

In the present device, two such channels α and b are now also assumed. The line α leads to the organ that makes a tone of the stringed instrument sound and the line b leads to a similar organ through which a corresponding tone of an instrument with a constant pitch, such as a piano or the like or a whistle, is made to sound is brought.

The mouths of the two lines are usually closed by a flap valve c or the like. If this valve is opened by means of a push button d, a lever, an electromagnet or the like, the two lines a, b are exposed, atmospheric air can flow in, and the instruments connected to the two lines sound at the same time, so that the string instrument can easily be tuned according to the instrument or tone generator with constant tuning.

Instead of a valve that can be moved by hand, you can also use the sheet music for the Use voices, for example at the beginning or at the end of a piece of music Pairs of holes in the sheet of music corresponding to the number of strings on the stringed instrument provides, one of which each through the sliding block to a tone of the string instrument

mentes, the other to the corresponding note of the constant instrument (piano, Whistle or the like) leads.

In the case of instruments to be played electrically, a double contact or the like would be provided 'be to the two tones of the instruments at the same time in order to set the mood for sounding bring to.

Claims (3)

Patent Claims: i. Tuning device for string instruments, characterized in that the The tone to be tuned is made in a known manner by simultaneously sounding the corresponding Tones of an instrument with a constant pitch is tuned, together with this comparison tone Use of a valve or an electrical contact mechanically for sounding is brought. 2. Tuning device according to claim 1, characterized in that by a manually or mechanically adjustable valve opened two lines at the same time through which the relevant comparison tones can be made to sound will. 3. Tuning device according to claim 1 and 2, characterized in that the two lines for the comparison tones through corresponding perforations on the sheet of music can be exposed from the sliding block. 1 sheet of drawings.