| 摘要 |
A mechanism constructed of strong and rigid material for mounting an adjustable bridge (27) and electric pickup (29) onto an acoustic upright bass instrument (A). Located at the narrow end (22) of the invention are tailgut holes (21) for securing the invention to the instrument via the tailgut used for conventional prior art tailpieces. Conveniently located in the main body (B1) of the invention is a plurality of string holes (24h) for locking acoustic upright bass strings (FIG. 2, (30) in their usual position in relation to the instrument. At the front upper surface of the invention is an adjustable bridge mounting surface (26) on a plane parallel to that of the fingerboard and of sufficient dimension to allow the effective placement of an adjustable bridge (27) in one of several positions relative to desired scale length of the instrument strings (FIG. 1, (30), FIG. 2, (30e)). Directly in front of the bridge mounting surface and recessed on a parallel plane is an electric pickup mounting surface (28 ) of sufficient dimension to allow placement of an electric pickup (29) upon it. The underside of the bridge mounting surface (26) contains a cavity (40) of sufficient dimension to allow placement of electric pickup controls (FIG. 2, (41,42)). At a point where the front and tail ends of the invention meet, approximately over the sound post of the instrument (A), a support assembly (B2) supports the main body (B1) of the invention on the surface (A1) of the instrument, seated securely by means of self seating feet (FIG. 3, (38)).
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