Magnetic mixer
    81.
    发明授权
    Magnetic mixer 失效
    磁力搅拌机

    公开(公告)号:US3752443A

    公开(公告)日:1973-08-14

    申请号:US3752443D

    申请日:1971-12-13

    Inventor: LICHTENSTEIN B

    CPC classification number: B01F13/0809 G01N33/4905 G01N35/0098

    Abstract: A magnetic mixer for laboratory use which includes a permanent magnet mounted for rotation and driven on an axis centrally between its poles. A volume of combined liquids, containing in addition a multiplicity of magnetic particles, is supported centrally with reference to the magnet poles for activation of the particles in the rotating magnetic field to mix the liquids to achieve a reaction between them or merely a blending. This rotational force on the mixture has the effect of redistributing the magnetic particles away from the center of the mixture which effect, unless countered, lessens the mixing action. A second permanent magnet is provided having its poles in substantial alignment with the first mentioned axis, and having one of these last-mentioned poles spaced a distance nearer to the mixture than the other pole thereof, the magnetic field of the second magnet being substantially at right angles to the magnetic field of the first magnet. The field of the second magnet effectively counters by attraction the aforementioned redistributing movement of the magnetic particles, and the resultant particle distribution is substantially uniform throughout the combined liquids.

    Abstract translation: 一种用于实验室使用的磁力搅拌器,其包括永磁体,该永久磁铁安装成用于旋转并在轴之间的轴线上驱动。 另外还含有多个磁性颗粒的混合液体的量相对于用于激活旋转磁场中的颗粒的磁极被中心地支撑以混合液体以实现它们之间的反应或仅仅是混合。 混合物上的这种旋转力具有将磁性颗粒重新分布离开混合物中心的作用,除非有所反应,否则会降低混合作用。 提供第二永久磁铁,其极点与第一个提到的轴基本对齐,并且这些最后提到的磁极之一与其混合物的另一个极点相隔一定距离,第二磁体的磁场基本上位于 与第一磁体的磁场成直角。 第二磁体的场通过吸引上述磁性颗粒的再分布运动而有效地反应,并且所得到的颗粒分布在整个组合液体中基本上是均匀的。

    Dispenser for supplying liquid by suction
    83.
    发明授权
    Dispenser for supplying liquid by suction 失效
    用于通过吸引来供应液体的分配器

    公开(公告)号:US3698868A

    公开(公告)日:1972-10-17

    申请号:US3698868D

    申请日:1971-05-20

    CPC classification number: B01L3/0282 G01N35/1095 Y10T436/117497

    Abstract: A DISPENSER INCLUDING A CONTAINER BODY HAVING A MOUTH. A PERMANENT LIQUID SEAL ACROSS THE MOUTH HAS A PAIR OF DUCTS APPROACHING THE BOTTOM OF THE CONTAINER AND OPENING THEREINTO. THE DUCTS EXTEND UPWARDLY THROUGH THE SEAL, HAVING THEIR UPPER ENDS SPACED APART. BEFORE USE, A SHORT LENGTH OF FLEXIBLE TUBING INTERCONNECTS THE UPPER ENDS OF THE DUCTS TO PREVENT LEAKAGE AND SPILLAGE. ONE END OF THE TUBING MAY BE DISCONNECTED AND THEN CONNECTED TO A SUCTION INLET SO THAT THE CONNECTED ONE OF THE PAIR OF DUCTS BECOMES AN ASPIRATING TUBE AND THE OTHER PROVIDES

    AN AIR INLET. MULTIPLE CONTAINER BODIES MAY BE SUPPORTED TOGETHER.

    Method and apparatus for the time sharing of multiple channel analysis means
    84.
    发明授权
    Method and apparatus for the time sharing of multiple channel analysis means 失效
    多通道分析方法的时间共享方法与装置

    公开(公告)号:US3697185A

    公开(公告)日:1972-10-10

    申请号:US3697185D

    申请日:1970-08-06

    CPC classification number: G01N21/253 G01N35/00

    Abstract: New and improved method and apparatus for the time sharing of multiple channel fluid sample analysis means are provided and comprise operatively associated light source, light sensitive detector means, digital logic means, detector and logic means timing and control means, detector circuit means, multiple channel fluid sample analysis result read-out means and read-out means timing and control means, respectively, said detector means is constituted by a single light-sensitive detector means in the nature of a photo-multiplier tube, and said detector circuit means comprises a single, temperature stabilized log diode and amplifier. An embodiment is disclosed wherein said light source is automatically and precisely tunable light source. In operation, the apparatus is effective to repeatedly scan said multiple channel analysis means and provide simultaneous recordings of the analysis results which are linear with regard to the respective fluid sample optical densities on said analysis result read-out means. The apparatus is applicable for use with multiple channel analysis means which include only colorimeters, and for use with multiple channel analysis means which include colorimeters and fluorimeters. The advantageous disposition of the analysis means on the manifold of operatively associated fluid sample supply and treatment means is also made possible by the apparatus of the invention.

    Abstract translation: 提供了用于多通道流体样品分析装置的时间共享的新的和改进的方法和装置,并且包括可操作地相关联的光源,光敏检测器装置,数字逻辑装置,检测器和逻辑装置定时和控制装置,检测器电路装置,多通道 流体样品分析结果读出装置和读出装置分别表示定时和控制装置,所述检测装置由光电倍增管性质的单个感光检测装置构成,所述检测器电路装置包括: 单个,温度稳定的对数二极管和放大器。 公开了一种实施例,其中所述光源是自动且精确可调的光源。 在操作中,该装置有效地反复扫描所述多通道分析装置,并且提供对于所述分析结果读出装置上的相应流体样品光密度线性的分析结果的同时记录。 该装置适用于仅包括色度计的多通道分析装置,并用于包括色度计和荧光计的多通道分析装置。 通过本发明的装置,分析装置在操作上相关联的流体样品供应和处理装置的歧管上的有利配置也是可能的。

    Burner construction for flame spectrophotometer and system therefor
    85.
    发明授权
    Burner construction for flame spectrophotometer and system therefor 失效
    燃烧器结构用于火焰分光光度计及其系统

    公开(公告)号:US3695812A

    公开(公告)日:1972-10-03

    申请号:US3695812D

    申请日:1970-10-30

    CPC classification number: G01N21/72 F23D91/02 F23D2206/0094

    Abstract: There is provided a spectral flame burner of the preatomizer type having a sample tube the outlet of which is disposed within a carrier gas conduit terminating in a nozzle. The spacing between the outlet of the sample tube and the outlet of the nozzle is adjustable during the normal operation of the analyzer system, including the burner. Improved means is provided to withdraw the outlet of the sample tube to a position in which sufficient gas pressure is developed in the sample tube to blow out any obstruction in the latter, including a lead screw mechanism operatively associated with the sample tube. The burner has an improved cap construction and a control system is provided for the burner to safely shut down the burner when a defect is detected in the burner system.

    Abstract translation: 提供了预分解器类型的光谱火焰燃烧器,其具有样品管,样品管的出口设置在终止于喷嘴中的载体气体导管内。 在分析仪系统(包括燃烧器)的正常操作期间,样品管的出口与喷嘴出口之间的间距是可调节的。 提供改进的装置以将样品管的出口抽出到样品管中产生足够的气体压力的位置,以吹出后者中的任何障碍物,包括与样品管可操作地相关联的丝杠机构。 燃烧器具有改进的盖结构,并且当在燃烧器系统中检测到缺陷时,为燃烧器提供控制系统以安全地关闭燃烧器。

    Method and apparatus for fluid injection
    86.
    发明授权
    Method and apparatus for fluid injection 失效
    流体注射的方法和装置

    公开(公告)号:US3695281A

    公开(公告)日:1972-10-03

    申请号:US3695281D

    申请日:1970-11-16

    Inventor: LEON LUIS P

    CPC classification number: F16K11/00 Y10T137/0318 Y10T137/2931 Y10T137/87571

    Abstract: A fluid injection device for incorporation in automated apparatus for the quantitative analysis of a substance transported in a flowing liquid stream segmented by gas bubbles or other immiscible fluid segments. The device includes a body defining an elongated fluid passageway portion. One end of the passageway portion provides an inlet for fluid or gas under pressure through a tube extending into the passageway portion from the last-mentioned end toward the other end thereof, which tube has a discharge end portion received axially within the passageway portion. An inlet for unsegmented liquid under pressure communicates with the passageway portion, upstream of the aforementioned discharge end portion of the tube, providing for axial injection of gas into the stream of liquid flowing from the liquid inlet toward the other end of the passageway portion. By varying the resistance to liquid flow in the area around the discharge end of the tube the size of the bubbles injected into the liquid stream may be changed.

    Abstract translation: 一种流体注射装置,用于结合在自动化装置中,用于定量分析在由气泡或其他不混溶的流体段分段的流动液体流中运输的物质。 该装置包括限定细长流体通道部分的主体。 通道部分的一端通过从最后提到的端部向另一端延伸到通道部分中的管道在压力下提供流体或气体的入口,该管道具有在通道部分内轴向容纳的排出端部分。 用于未分段压力的液体的入口与管的上述排放端部分的上游的通道部分连通,从而将气体轴向注入从液体入口朝向通道部分的另一端流动的液体流中。 通过改变在管的排出端附近的区域中的液体流动阻力,可以改变注入到液体流中的气泡的尺寸。

    Self-balancing centrifuge method and apparatus
    87.
    发明授权
    Self-balancing centrifuge method and apparatus 失效
    自平衡离心法和装置

    公开(公告)号:US3692236A

    公开(公告)日:1972-09-19

    申请号:US3692236D

    申请日:1970-10-30

    CPC classification number: B04B9/14 Y10T74/2109

    Abstract: A centrifuge of the type used for a number of individual test samples in separate sample containers is dynamically balanced automatically by means of a counterbalancing mass contained in an annular chamber within the centrifuge wheel. The centrifuge wheel is mounted as an inverted pendulum about a fixed pivot and spring biased to the vertical position. The counterbalancing mass, which is at the same vertical level as the sample containers, automatically moves angularly to the counterbalancing position at speeds above the speed corresponding to the natural vibration frequency of the pendulum system.

    Method of continuously casting tube
    88.
    发明授权
    Method of continuously casting tube 失效
    连续铸管方法

    公开(公告)号:US3680624A

    公开(公告)日:1972-08-01

    申请号:US3680624D

    申请日:1971-05-13

    Inventor: WATTS LEONARD

    CPC classification number: B22D11/146 B22D11/047 B22D11/08 B22D11/143

    Abstract: A tundish receiving a first molten metal and a closed-end mold are moved apart relative to each other so that the mold forms a solidified shell of a billet, molten metal flowing through the solidified shell to the mold. During the casting, a second or altered molten metal is introduced into the tundish to flow through the elongating billet so that a continuously cast billet is produced with a core of one metal, a layer of alloyed metals, and a shell of another metal. Billets may be produced with steel cores and stainless steel shells, ''''killed'''' steel cores and ''''rimmed'''' steel shells, and other combinations. Tubing may also be formed by the continued relative separation of the tundish and the mold after the source of molten metal is exhausted.

    Abstract translation: 接收第一熔融金属和封闭端模具的中间包相对于彼此移动分开,使得模具形成坯料的固化壳体,流过固化壳体的熔融金属到模具。 在铸造过程中,将第二或改变的熔融金属引入中间包中以流过伸长的坯料,从而以一种金属的芯,一种合金金属的芯和另一种金属的外壳生产连续铸造的坯料。 钢坯可以用钢芯和不锈钢壳制造,“杀死”钢芯和“镶边”钢壳,以及其他组合。 管道也可以在熔融金属源耗尽之后通过中间包和模具的持续相对分离形成。

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