Dating bach trumpet mouthpieces
Dating bach trumpet mouthpieces - eritrea dating singles
Most mouthpieces have been shaped from solid brass rod in which contiguously conjoined elements of a rim, a cup-chamber, a backbore-chamber, and an external end-taper blend together within undivided bodies.
Mouthpieces with large cup-chambers produce a more mellow timbre whereas shallow-cupped mouthpieces produce more brilliant sounds.
A set of at least three mouthpieces for a predetermined kind of brass-wind instrument in which individual members of said set thereof have, respectively, contiguously conjoined elements of a rim, a cup-chamber, a backbore-chamber, and an external end-taper, the improvement comprising said individual members each having distinctly non-equal lengths as compared to other said individual members of said set, said individual members each having said external end-taper of a size substantially equal thereto and wherein volumetric sizes of said cup-chamber v2 and of said backbore-chamber v3 are determined by: d.
experimentally varying cup-chamber length L1 and backbore length L2 until volumetric chamber sizes of v2 v3=v1, as calculated by said computer-aided-design software program, where L1 L2 equals mouthpiece length L3,2.
Current manufacturers utilize the principles of fixed length and direct proportionality to design a similar range of mouthpieces, separately, for each of the different kinds of brass wind instruments, from trumpet to tuba. 2,917,964, (1959) Alfred Cassinelli showed some interest in the control of internal air volume, but he only did this to allow a single rim section to be used across several different kinds of instruments, like trumpet rims for trombone bodies.
In further discussions, such a range of instrument-specific mouthpieces, like , is referred to as a “set” of mouthpieces. provides an example of how rims, cups, and backbores sections are typically joined for such mouthpieces.
The first object of the invention is to demonstrate a method that balances cup-chambers and backbore-chambers according to the principle of inverse proportionality.
Another object is to describe how separate sets of inversely-proportioned mouthpieces can be created for each kind of brass wind instrument.A set of mouthpieces for a predetermined kind of brass-wind instrument, wherein individual members of said set thereof each include, respectively, contiguously conjoined elements of a rim, a cup-chamber, a backbore-chamber, and an external end-taper, and wherein the combined improvement within said set of mouthpieces comprises a set of at least three of said individual members for said predetermined kind of brass wind instrument each having a different length and a different volumetric cup-chamber connecting to a smaller diameter center-bore, such that a first of said members has a shorter length and a larger volumetric cup-chamber size relative to a second of said members having a longer length and a smaller volumetric cup-chamber size thereby defining a relative inversely-proportioned relationship between said length and cup size chamber for each said member within said set, and wherein said individual members each having said external end-taper of substantially equal size configured to fit said predetermined kind of brass wind instrument whereby changes in timbre of sound are strongly achieved through said set as a function of said different mouthpiece lengths and cup-chamber depths for the predetermined kind of brass-wind instrument and provides a visual cue through said different lengths aiding selection of one of said set to meet performance requirements for a particular style of music., wherein each mouthpiece has divided parts selected from a group of rim parts, cup-chamber parts, backbore parts, tops parts and bottom parts, said parts having means for fastening at least one of each said parts together to provide each said mouthpiece., wherein each mouthpiece has a substantially similar internal volumetric size, wherein internal volumetric size equates substantially to said volumetric cup-chamber size combined with said volumetric backbore-chamber size thereby providing constancy of internal volume and improved intonation qualities of said mouthpieces within said set., wherein each mouthpiece has a substantially similar fundamental frequency of resonance when each mouthpiece body is closed shut where said cup-chamber adjoins said rim, thereby providing improved intonation qualities of each mouthpiece within said set.Mouthpieces for brass wind instruments have been produced for thousands of years.Since the early 20Century, interchangeability of brass-wind mouthpieces has been greatly facilitated by two design practices.Manufacturers started to use (1) generally accepted standards for overall length and external end-taper, in conjunction with (2) a common principle for “balancing” acoustical characteristics of a cup-chamber with a backbore-chamber within each mouthpiece body.Mouthpieces for brass wind musical instruments are shaped so the physical length of a mouthpiece body (40, 50, 60, 70, & 80) is inversely-proportional to the volumetric size of a corresponding cup-chamber (42, 52, 62, 72, & 82).