Process for the manufacture of musical instruments and instruments so obtained
OwnerPierre Laurenceinventor
Life of this patent
Estimating the term…
Abstract
A process for the manufacture of a material for making a wind musical instrument and for making the instrument includes the steps of providing a wood powder, incorporating into the powder fibers chosen to adjust the modulus of elasticity of the mixture to the desired value for the instrument, placing the mixture into a heated mold to melt the natural resins in the wood while maintaining the mixture under pressure between 50.times.10.sup.5 Pa and 700.times.10.sup.5 Pa, and cooling the mixture under the pressure.
Claims13
Process for the manufacture of a material intended for producing a musical instrument and particularly a wind instrument, comprising the steps of:
- --making a powder constituted by at least one type of wood,
- --incorporating in said wood powder fibers chosen so that, by playing on their nature and quantity, the modulus of elasticity of the material is adjusted to the value desired for the instrument,
- --disposing a mixture of said wood powder and said fibers thus obtained in a mold where it is heated to a sufficient temperature to melt the natural resins contained in the wood, while maintaining it under a pressure included between 50.10.sup.5 Pa and 700.10.sup.5 Pa as a function of the density which it is desired to obtain for the instrument,
- --cooling the mixture, maintaining said pressure at least during the beginning of cooling.
A process for forming a pre-blank, or core comprising the steps of:
- making a powder constituted by at least one type of wood,
- --disposing it in a mold where it is heated to a sufficient temperature to melt the natural resins contained in the wood, while maintaining it under a pressure included between 50.10.sup.5 Pa and 700.19.sup.5 Pa as a function of the density which it is desired to obtain for the core,
- --cooling the core, while maintaining said pressure at least during the beginning of cooling,
- --demolding the core, the core, placing it in a further mold and disposing therearound said mixture, so as to constitute a skin,
- --heating an assembly constituted by the core and the skin to a temperature sufficient to melt the natural resins contained in the pulverulent wood, while maintaining it under a pressure included between 50.10.sup.5 Pa and 700.10.sup.5 Pa as a function of the density which it is desired to obtain,
- --cooling the assembly while maintaining said pressure at least during the beginning of cooling.
A blank intended to constitute a musical instrument and in particular a wind instrument, comprising a mixture, in a compressed state, of a powder of at least one wood with discontinuous fibers, and in particular short fibers, a natural resin of said at least one wood being a binder and the only binder of said blank,
- said blank further comprising:
- a central part, or core (3), constituted by a powder of at least one wood in the compressed state,
- an outer part, or skin (9), surrounding the core (3), constituted by a mixture of a powder of at least one type of wood in the compressed state with discontinuous fibers, and in particular short fibers, the modulus of elasticity of the skin (9) being greater than that of the core (3).
A musical instrument, and particularly wind instrument, comprising a mixture, in the compressed state, of a powder of at least one type of wood with discontinuous fibers, a natural resin of said at least one wood being a binder and the only binder of said at least one of its pieces,
- said instrument further comprising:
- a central part, or core (3), constituted by a powder of at least one type of wood in the compressed state,
- an outer part, or skin (9), surrounding the core (3), constituted by a mixture in the compressed state of a powder of at least one type of wood and fibers, the modulus of elasticity of the skin (9) being greater than that of the core (3).
A musical instrument, and particularly a wind instrument, comprising a mixture, in the compressed state, of a powder of at least one type of wood with discontinuous fibers, a natural resin of said at least one wood being a binder and the only binder of said at least one of its pieces,
- said instrument further comprising a plurality of pieces, particularly tubular pieces, assembled in one another by fit, wherein zones close to said fits comprise a higher density of said fibers than other zones of the instrument.
Dependencies are inferred from the claim text.