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    Analytical instrument
    3.
    发明授权
    Analytical instrument 失效
    分析仪器

    公开(公告)号：US3689225A

    公开(公告)日：1972-09-05

    申请号：US3689225D

    申请日：1971-06-14

    Applicant: WHITE JOHN U

    Inventor： WHITE JOHN U

    IPC: G01N21/72 ,  G01J3/48 ,  G01N21/58 ,  G01N31/12

    CPC classification number: G01N21/72

    Abstract: ABOUT TWELVE PERCENT OF THE INSIDE DIAMETER OF THE CHIMNEY. TO CLEAN THE PORTION OF THE INLET CONDUIT WHICH EXTENDS INTO THE ATOMIZING HOUSING, A WIRE AND TUBE ASSEMBLY IS MOVABLY POSITIONED WITH RESPECT TO THE HOUSING, SUCH THAT THE WIRE MAY BE INSERTED WITHIN THE CONDUIT PORTION WHILE THE TUBE SURROUNDS THE CONDUIT TO PROVIDE SUPPORT. IN SOME EMBODIMENTS THIS CLEANING IS ACCOMPLISHED AUTOMATICALLY IN REPSONSE TO THE CHANGING OF THE SAMPLE.

    AN ANALYTICAL INSTRUMENT INCLUDING AN ATOMIZER-BURNER AND A DETECTION SYSTEM FOR THE QUALITATIVE AND QUANTITATIVE EMISSION OR ABSORPTION ANALYSIS OF A SAMPLE. THE SAMPLE IS INTRODUCED THROUGH AN INLET CONDUIT INTO A HOUSING AND IS ATOMIZED AND MIXED WITH AN APPROPRIATE FUEL GAS. THE MIXTURE IS LED THROUGH AN ANGULARLY DISPOSED BURNER BARREL AND A FLUID DISCHARGE OPENING TO A GRID FOR HOLDING THE FLAME. A CHIMNEY IS SUPPORTED IN SPACED RELATIONSHIP WITH THE DISCHARGE OPENING SUCH THAT THE SPACING BETWEEN THE CHIMNEY AND THE WALL WHICH FORMS THE OPENING PREFERABLY IS NOT LESS THAN ABOUT SIX PERCENT AND NOT GREATER THAN

    Grating monochromator
    7.
    发明授权
    Grating monochromator 失效
    光栅单色器

    公开(公告)号：US3888590A

    公开(公告)日：1975-06-10

    申请号：US45917074

    申请日：1974-04-10

    Applicant: WHITE JOHN U

    Inventor： WHITE JOHN U

    IPC: G01J3/18

    CPC classification number: G01J3/18

    Abstract: A monochromator having curved entrance and exit slits and a pair of curved diagonal mirrors respectively positioned a short distance in front of and in back of an intermediate dispersed image. The dispersed light is successively reflected by the two curved mirrors to reverse the sense of the dispersion without reversing the curvature of the image. In several advantageous embodiments the diagonal mirrors are interposed between two grating monochromators which are oriented in different planes and are arranged in additive relationship with each other. The grating magnification or reduction of the first monochromator is off-set by the grating magnification or reduction of the second monochromator, and the final slit image is substantially free from aberrations at all grating angles and at all points even along comparatively long slits.

    Abstract translation: 具有弯曲入口和出口狭缝的单色仪和分别位于中间分散图像的前面和后面的短距离的一对弯曲对角镜。 分散的光被两个曲面镜连续反射，以反转色散的感觉，而不会反转图像的曲率。 在几个有利的实施例中，对角镜被插入在两个光栅单色器之间，两个光栅单色器被定向在不同的平面中并且彼此以相加关系排列。 第一单色仪的光栅放大率或减小度由光栅放大率或第二单色仪的减小而偏移，并且最终的狭缝图像在所有光栅角度以及甚至在较长的狭缝处基本上都没有像差。

    Analytical instrument
    8.
    发明授权
    Analytical instrument 失效
    分析仪器

    公开(公告)号：US3592608A

    公开(公告)日：1971-07-13

    申请号：US3592608D

    申请日：1968-10-09

    Applicant: WHITE JOHN U

    Inventor： WHITE JOHN U

    IPC: G01N21/72 ,  G01J3/48 ,  G01N21/58 ,  G01N31/12

    CPC classification number: G01N21/72

    Abstract: AN ANALYTICAL INSTRUMENT INCLUDING A FLAME SOURCE AND A DETECTION SYSTEM FOR THE QUALITATIVE AND QUANTITATIVE EMISSION OR ABSORPTION ANALYSIS OF A SAMPLE. THE SAMPLE IS ATOMIZED AND MIXED WITH AN APPROPRIATE FUEL GAS, AND THE MIXTURE IS LED THROUGH AN ANGULARLY DISPOSED BURNER BARREL TO A GRID FOR HOLDING THE FLAME. COMPRESSED AIR IS SUPPLIED TO THE ATOMIZER, AND A PORTION OF THE AIR IS DIRECTED TO A VENTURI NOZZLE WHICH IS CONNECTED TO A SUPPLY OF THE FUEL GAS. THE AIR IS EFFECTIVE TO DRAW THE FUEL GAS THROUGH THE VENTURI AND INTO THE ATOMIZER AT A SUBSTANTIALLY CONSTANT RATE IRRESPECTIVE OF PRESSURE FLUCTUATIONS IN A GAS SUPPLY. THE INSTRUMENT ADDITIONALLY INCLUDES A SCREEN AND BAFFLE CONSTRUCTION WITHIN THE ANGULARLY EXTENDING BARREL WHICH IS EFFECTIVE TO DIRECT LARGE DROPLETS OF SAMPLE MATERIAL AWAY FROM THE BARREL INLETS.

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