DE8802598U1 - Sound post for reed instrument with one reed per reed plate - Google Patents

Description

Description of the sound post for boys' instruments with one reed per reed plate or note

With compressed air, the air flows through the valve 8.1 into the air inlet chamber 8 (drawing © and ©), 8.2 is blocked. It flows through the voice plate 4.1 through the air outlet chamber 9 (drawing ©) and escapes through the valve 9·1 (drawing (D )) with the tone flap 2 open through the tone shaft 3 into the environment. 9.2 is blocked. |

In the event of a draft, the air flows through the valve 8.2 into the air inlet chamber 8, blocking 8.1. It flows through the reed plate 4.1 into the air outlet chamber 9 and escapes through the valve 9.2 into the interior of the bellows. 9.1 is blocked. Drawing (^) shows how, in a three-choir instrument, the choir with the smallest reed is blocked by the slides 10 because its air inlet chamber remains closed in the event of draft and compressed air. When closed, the slide holes belonging to the chamber are moved to the place above the air outlet chamber 9, which is why the air shaft 3 is placed next to the chambers in this design.

If the soundposts are assembled or disassembled at the dividing line 11, the two valves 8.1 and 8.2 as well as the reed are easily accessible for maintenance purposes.

Claim 1 represents a simplification and generalization of . ■Aoeprtttih &ggr;-dfU·. Silk &>&Lgr;$fc|1lWott&4«kmf KiBB 4a» can be derived from the drawings given by omitting the intermediate walls 6, reducing all valves 8.1 and 8.2 to one piece each and saving the entire slide construction. No influence on the protection claims:

- Shape of the air shaft 3, the canopy*), the air inlet and outlet, position of the slides, size of the sound flaps

- Condition of the soundboards, their mono- or multi-part structure, material and parts of _3n chambers, base plate and slide construction, position of the dividing line of the soundboards

Identification of the components of the Kons Iemiktipnazeichnung

1 base plate 6 partition walls between 8.2 etc. for draught

2 clay shaft single chambers ^; 9 air outlet chamber

3 Air shaft 7 Partition of air duct.- 9.1 Valve with opening

4 t tongue and air inlet to the air outlet chamber 4.1 Stlmrnplatte 9 Air inlet chamber I for compressed air

4*2 Shaft for 8.1 Valve for compressed air 9.2 similar for draught

Voice plate with opening for air- 10 Regietereehiebei'

5 stirametoohau - entrance space 11.Dividing line between the front walls 8.2 del for draughts

D, Z pressure, supply air direction A—B» C- —d _f E-? gieishe section = li

.«•It ti*' Ii.. i» Il I I I I I I I . ««

11 &igr; it

JEeehflik

The usual reed instruments such as accordions require two tunings per reed, one for pressure and one for pull. This requires double the effort for the reeds, high weight, a lot of space, a lot of effort for the valves, which are attached directly to the reed plates, are sensitive and have to be processed very carefully due to their proximity to the tuning. This results in double tuning, pulling up the inner reeds, a lot of effort when repairing because of the removal of the reed plates and working with wax that easily soils the plates.

There are patents that deal with the desired halving of the tongues. However, they each have considerable disadvantages: a large number of valves that require a lot of space, high mechanical complexity of slides for air control, complicated production of double reed plates that do not function properly, high space requirements of a multi-chamber system or complicated precision mechanical production of control-tilting reed plates.

Task

The aim of this utility model is to halve the number of tunings. Reduction of the weight and the space required by approx. 100% by enabling the movement of small canals together. Other advantages are the considerably more convenient tuning without valves and the pulling up when tuning tones of the same name instead of choirs and scales. Finally, the better protection of the internal and more stable valves is a benefit. Only 25% of the valves on three-choir and five-choir instruments are exposed.

The advantages are offset by the following disadvantages, which are, however, less than the advantages:

The register valves 12 are doubled, with one running below and the other above the timbre sticks. Their coupling is simple. Furthermore, the valve thickness is increased by 30%, 25% or 20% for three-, four-, etc. five-course instruments compared to conventional timbre sticks. For two-course, non-registerable instruments, it remains constant.

The construction of the soundboards is no more complicated than usual. Their number can be reduced by using two or more rows of tone keys ^and combining two or more tones in one soundboard with two or more air outlets.

Claims (3)

S ection claims .:.'..' '·· The claims of the utility model apply to a 1. Sound post for a reed instrument with compressed and draft air with two or more reeds vibrating simultaneously per note, in which both compressed air and draft air flow through the reeds in the same direction, whereby the air inlet space always remains the same and the air outlet space always remains the same through regulation by means of four valves. The sound post is characterized by the fact that all reeds that sound simultaneously are operated with only one common air inlet space and one common air outlet space, each with two valves. 2. Sound post according to claim 1, in which all reeds of a combined tone group with tone key and key, e.g. the notes of the tone group G ¹ or a tone combination desired for the key, can be tuned together, combined or blocked by register slides, in which each note requires only one reed according to claim 1, characterized in that all notes of this tone group have a common air outlet chamber and separate air inlet chambers for each separately playable reed; or conversely a common air inlet chamber and separate air outlet chambers, whereby the entire construction has to be reversed accordingly. Each air inlet and air outlet chamber is operated by two valves. The separate air chambers are blocked by a slider above and below the chambers. 3. Sound post for a reed instrument, which does not contain all the notes of the scale of one or two courses, as has been the case up to now, but which is characterized by the fact that it contains all the notes belonging to a key and its key, i.e. all the reeds from all registers of this note or combination of notes. Il Il I * I · II • I Il I * · · Il * · · Il • « The *