DE105942C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The inventor of the telephone or microphone mouthpiece described below had so far, to achieve a better understanding, speaking tubes with telephone or microphone united in such a way that the mouthpiece is connected to the rosette closing off the membrane ' became.

With these apparatuses it has been shown through experiments that for the mouthpiece ever to choose a different length according to the distance at which to speak is to enable good and easy communication while avoiding loud speaking.

The object of the present invention now consists in a mouthpiece, which in the easiest way can be lengthened and shortened, depending on the distance what the negotiation is to take place requires.

For this purpose, the mouthpiece from a plurality of parts composed telescoped into each other which BEZW _b. can be pulled out. For long-distance connections, i.e. for connections over 100 km, the small device, i.e. the short pipe, is usually not sufficient and the sound effect must be increased by increasing the length of the speaking tube, while for local traffic the small device is sufficient, i.e. the shorter speaking tube, which can even have an unfavorable effect for a longer period due to the excessive sound effects. On the accompanying drawing, the new mouthpiece is shown in Figs. Ι, 2 and 3. As can be seen from Fig. 1, the tube consists, for example, of two mutually displaceable parts α and b, of which the tube b is pushed into the tube α . The tube α is attached in a suitable manner to the rosette of the telephone or microphone that closes the membrane, while the tube b , which can be displaced in α , is expediently provided with a funnel-shaped mouthpiece c at the front end, where it is spoken into.

FIG. 3 shows the speaking tube pushed completely one inside the other, that is to say in its shortest length Z, suitable for local traffic, while FIG. ¹ illustrates the speaking tube in its greatest length Z 1. The person using the mouthpiece therefore has it in his hand to lengthen or shorten the mouthpiece as required by pushing the tube b in and out.

As already said above, the mouthpieces shown in the drawing are made of two parts that can be pushed into one another. It can be seen without further ado that more than two tubes which can be pushed into one another can also be arranged. The tube a expediently has the cylindrical shape, while the tube b can also be made cylindrical or slightly tapered towards the mouthpiece. The way in which the sliding part b of the mouthpiece is held in its end positions can be

Claims (1)

can be chosen at will. In the drawing FIGS. 2 and 3, for example, a longitudinal slot $ is arranged as a guide channel in the tube α , in which a pin t attached to the inner tube b slides. The speaking tubes can be made of any suitable material. The construction of a telescopically extendable mouthpiece described above can also be used flexible or hose-like mouthpieces are transferred in such a way that into the from hose-like mouthpiece made of suitable material, a rigid pipe part is switched on which can be pulled out telescopically, so that the whole mouthpiece gets a greater length. Patenτ claim: In the case of telephones or microphones, the arrangement of a speaking tube consisting of several The mouthpiece consists of telescopically displaceable parts to lengthen or to depending on the distance up to which one is to speak shorten, For this purpose ι sheet of drawings.