摘要:
To provide for adjustment of stylus tracking force appropriate to a particular tone arm with which a phonograph cartridge may be used, the cartridge is provided with a compartment into which one or more weights may be placed. A damper is included for preventing vibration of the weights.
摘要:
A flute headjoint having a lip plate in which a portion of the blow edge is stepped to impart different heights to the blow hole. The blow hole has an inward protrusion beginning at the blow edge and extending the height of the blow hole to impart a region of narrower transverse dimension to the blow hole. Either feature, or both together, improve upper register performance. The edge of the lip plate opposite the lip rest surface is swept back toward the lip rest surface to minimize obstruction of excessive air flow. The blow hole features are incorporated in a piccolo embouchure including a tubular body of two halves.
摘要:
A mold is made from a flute chimney model having a precision bore, and a chimney is cast from the mold with substantially no shrinkage in bore diameter. The mold can be made from a chimney model having an entire undercut surface thereon, and the chimney cast with substantially no shrinkage in undercut diameter.
摘要:
A flute headjoint of a flute includes a headjoint tube having an alignment hole therethrough, and a tube section dimensioned for insertion into the alignment hole. The tube section includes a blow hole bottom opening and an undercut surface surrounding the blow hole bottom opening.