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    • 13. 发明授权
    • Digitally settable selective control for speed of wavelength scan or for
time base scan
    • 用于波长扫描速度或时基扫描速度的数字可选择选择控制
    • US4037960A
    • 1977-07-26
    • US683188
    • 1976-05-04
    • James H. Macemon
    • James H. Macemon
    • G01J3/06G01N21/00G01J3/42
    • G01J3/06
    • In a recording spectrophotometer the ordinate of the plotter-scriber is controlled by the output of a photomultiplier while the abscissa of the plotter-scriber is controlled by a selectable mode manually adjusted controller.In one mode, the controller furnishes a time base signal of selected rate of change, so that the abscissa of the plotter-scriber varies with the passage of time in accordance with said rate of change.In aother mode, the controller furnishes a stepping signal of selected periodicity, for application to a stepping motor, which changes the wavelength adjustment of the spectrophotometer at a rate determined by the selected periodicity. The spectrophotometer furnishes to the plotter-scriber an analog voltge varying with the instantaneous wavelength setting of the spectrophotometer, so that the abscissa of the plotter-scriber correspondingly varies with the instantaneous value of the wavelength.A common manually adjusted digital setting means is used for adjusting either the said selected rate of change of the time base or the said selected periodicity of the stepping signal.
    • 15. 发明授权
    • Constant temperature, multiple sample, rotary changer
    • 恒温,多采样,旋转式换刀
    • US4047820A
    • 1977-09-13
    • US687883
    • 1976-05-19
    • Charles SoodakDavid L. LessnerJames H. Macemon
    • Charles SoodakDavid L. LessnerJames H. Macemon
    • G01N21/25G01N21/16
    • G01N21/253
    • A rotary sample changer for a spectrofluorometer has a revolving turret base which can be indexed and which carries an interchangeable sample carrier. Different sample carriers accommodate test cells, test tubes and cuvettes of different sizes and shapes.The revolving turret base and the interchangeable rotary sample carriers are constructed of material having good thermal conductivity and rotate on a large stationary hollow axle which is thermostated by thermally controlled internal fluid circulation to act as a heat source or sink to the samples. Thus, the sample carriers can readily be interchanged without disturbing the plumbing by which the thermostatic fluid is circulated.The revolving turret base is detented at the stations to which it is indexed without kinematic ambiguity and without application of any cocking force. Two spring biased ball detents, symmetrically spaced 180.degree. about the axis of rotation, are provided. At the four index stations one ball catches on one of two indexing grooves spaced 90.degree. apart, while the other ball bears against a flat.
    • 用于分光荧光计的旋转取样器具有可转位的旋转转塔底座,并带有可互换的样品载体。 不同的样品载体适应不同尺寸和形状的测试细胞,试管和比色皿。