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    Process of extracting a metal value
    1.
    发明授权
    Process of extracting a metal value 失效
    提取金属价值的过程

    公开(公告)号：US4455234A

    公开(公告)日：1984-06-19

    申请号：US427786

    申请日：1982-09-29

    申请人： David Markham ,  Clifford G. Brown ,  John M. Simon

    发明人： David Markham ,  Clifford G. Brown ,  John M. Simon

    IPC分类号： B01D11/04 ,  C01F7/00 ,  C22B3/26 ,  C22B3/38 ,  C02F3/08

    CPC分类号： C01F7/00 ,  B01D11/0488 ,  C22B3/0005 ,  C22B3/0087 ,  Y02P10/234

    摘要： To extract a metal value, particularly aluminium, from an aqueous feed stream containing the value to be extracted is treated in a recovery unit from which it passes to a contactor where it is contacted with a solvent stream including a partially water soluble extractant for the value and an organic diluent. The delivery from the contactor is separated into an organic phase, an aqueous raffinate and a dispersed intermediate phase. The organic phase is stripped of the value and recycled to the solvent stream. The raffinate as recycled by being added to the feed stream, and the intermediate phase is treated for recovery of extractant.

    摘要翻译： 从含有待提取值的含水进料流中提取金属值，特别是铝，在回收单元中进行处理，从该回收单元中将其转移到与包含部分水溶性萃取剂的溶剂流接触的接触器中， 和有机稀释剂。 从接触器的输送被分离成有机相，含水萃余液和分散的中间相。 将有机相汽提，并再循环至溶剂流。 通过添加到进料流中再循环的萃余液和中间相被处理以回收萃取剂。

    Operator interchangeable gear driven platen and platen drive mechanism for typewriters and printers
    2.
    发明授权
    Operator interchangeable gear driven platen and platen drive mechanism for typewriters and printers 失效
    用于打字机和打印机的操作员可互换齿轮驱动压盘和压板驱动机构

    公开(公告)号：US4347009A

    公开(公告)日：1982-08-31

    申请号：US273556

    申请日：1981-06-16

    申请人： Clifford G. Brown

    发明人： Clifford G. Brown

    IPC分类号： B41J11/00 ,  B41J11/02 ,  B41J11/24 ,  B41J19/96 ,  F16H3/36

    CPC分类号： B41J19/96 ,  Y10T74/19367 ,  Y10T74/19516

    摘要： A support for an idler gear is pivotally mounted about the driving gear axis in a gear driven platen drive for a typewriter. A constraining member mounted with the interchangeable platen engages and constrains the support in a position to insure engagement of the idler with the platen gear and may be sized or shaped to insure proper positioning of the support and idler for a number of different platen gears of varying diameters, allowing platens and platen gears to be readily changed to vary the line feed increment as desired by the operator.

    摘要翻译： 用于空转齿轮的支撑件围绕驱动齿轮轴线枢转地安装在用于打字机的齿轮驱动的压盘驱动器中。 安装有可互换压板的约束构件接合并约束支撑件以确保惰轮与压板齿轮的接合的位置，并且可以将其尺寸或形状设置成确保用于多个不同的不同压板齿轮的支撑件和惰轮的适当定位 直径，允许压板和压板齿轮容易地改变，以根据操作者的需要改变换行增量。