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    • 3. 发明授权
    • Tonearm alignment gauge
    • Tonearm校准仪
    • US4490816A
    • 1984-12-25
    • US424081
    • 1982-09-27
    • Joseph D. Kehl
    • Joseph D. Kehl
    • G11B3/06G11B3/10G11B3/30G11B3/42
    • G11B3/10G11B3/06G11B3/30G11B3/42
    • A phonograph cartridge alignment gauge includes a plate, a cartridge work station and a visual indicator. A method of aligning a cartridge on a tone arm with the gauge, for stylus tangency at two radii, includes fastening the cartridge to the tone arm while the cartridge is on the work station and the turntable spindle is within a combination pivot point-spindle opening of the gauge, to establish stylus tangency at a first radii. The cartridge is refastened to the tone arm while the cartridge remains in the work station but after the tone arm is moved and the gauge pivoted about the combination opening, to establish stylus tangency at a second radii while maintaining tangency at the first. An alternate gauge and method include similar details.
    • 留声机墨盒对准计量器包括印版,墨盒工作台和视觉指示器。 将色调臂上的墨盒与计量器相对准的方法,用于在两个半径处的触控笔切线,包括在墨盒位于工作台上时将墨盒紧固到色调臂上,并且转盘心轴在组合枢转点心轴开口内 的量规,在第一个半径处建立触笔相切。 当墨盒保持在工作站中,但是在色调臂移动并且测量仪围绕组合开口枢转之后,墨盒被重新固定到色调臂,以在第二半径处建立触笔相切,同时保持在第一半相切。 替代规格和方法包括类似的细节。
    • 5. 发明授权
    • Lever operated stylus guard for phonograph pick-up cartridge
    • 手持式操作杆用于留声机拾取卡盘的触控笔
    • US4270758A
    • 1981-06-02
    • US100420
    • 1979-12-05
    • Joseph D. Kehl
    • Joseph D. Kehl
    • G11B3/09G11B21/00G11B3/10
    • G11B3/092
    • A stylus guard assembly for use with a phonograph pick-up cartridge, which assembly includes a cam member, a manually operated lever with a pivot operating arm and walls providing detent surfaces. The pivot operating arm is disposed at an angle to a lever which engages a curved cam slot on a stylus guard. When the lever is manually displaced through its designated travel, the movement at the end of the arm, through the action of the cam mechanism, causes the guard to rotate on its pivot from one position to another. In one position, the guard is retracted to expose the stylus. In both positions, the guard is held in place by the detent mechanism. The manually operated lever produces a visual indication of the stylus guard position, which shows whether the stylus guard is in the position to allow the stylus tip to engage with the recording or is in the position to protect the stylus when not in use.
    • 一种用于留声机拾取盒的触控器组件,该组件包括凸轮构件,具有枢转操作臂的手动操作杆和提供制动表面的壁。 枢轴操作臂设置成与操作杆成一定角度,该杆与触针保护罩上的弯曲凸轮槽接合。 当手柄通过其指定的行程手动移位时,通过凸轮机构的作用在臂的端部处的运动导致防护件在其枢轴上从一个位置旋转到另一个位置。 在一个位置,护罩被缩回以露出触针。 在这两个位置,守卫通过制动机构保持在适当位置。 手动操作的杆产生触控笔保护位置的视觉指示,其显示触针防护件是否处于允许触针尖端与记录接合的位置,或者在不使用时保护触针的位置。