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    Microtome assemblies
    1.
    发明授权
    Microtome assemblies 失效
    MICROTOME ASSEMBLIES

    公开(公告)号：US3673904A

    公开(公告)日：1972-07-04

    申请号：US3673904D

    申请日：1970-12-14

    申请人： N G N LTD

    发明人： COOPER MICHAEL HENRY ,  FRYATT LESLIE ALVA

    IPC分类号： G01N1/06

    CPC分类号： G01N1/06 ,  G01N2001/061 ,  Y10T83/293 ,  Y10T83/8749 ,  Y10T83/882 ,  Y10T409/504428

    摘要： A microtome assembly comprises a pivotally suspended knife assembly and knife displacing means which are coupled to the knife assembly such that forward movement of the displacing means urges the knife assembly into a lower position before horizontal displacement of the knife assembly on its cutting stroke, and retractive movement of the displacing means urges the knife assembly to an upper position before horizontal displacement of the knife assembly on its return stroke. The knife body is therefore lifted clear of a specimen before its return stroke thereby avoiding damage to a cut surface of the specimen.

    Apparatus for cutting lengths of convoluted picket wire from a continuous strand thereof
    7.
    发明授权
    Apparatus for cutting lengths of convoluted picket wire from a continuous strand thereof 失效
    用于从其连续的扭矩切割出卷绕的卷线的长度的装置

    公开(公告)号：US3731574A

    公开(公告)日：1973-05-08

    申请号：US3731574D

    申请日：1971-12-06

    申请人： UNITED STATES STEEL CORP

    发明人： MCCARTHY P ,  NELSON J

    IPC分类号： B21F11/00 ,  B26D5/02

    CPC分类号： B21F11/005 ,  Y10S83/907 ,  Y10T83/874 ,  Y10T83/8743 ,  Y10T83/8799 ,  Y10T83/8811 ,  Y10T83/882 ,  Y10T83/9483

    摘要： Apparatus includes a pair of shear heads mounted astride a continuous length of convoluted picket wire for linear movement toward and away from the strand. Each of said shear heads being provided with a rotatable cutting blade and a fixed cutting blade positioned to engage a common convolution of the strand at two separate points and cutting away a portion of the convolution to cut away a length of picket wire from the strand when the rotatable cutting blades are rotated. Such cutting operation simultaneously forming a tail end on the length of wire cut away from the continuous strand and a head end on the leading end of the continuous strand.

    摘要翻译： 设备包括一对跨越连续长度的卷绕的绳索的剪切头，用于线材向线材移动并远离线材。 每个所述剪切头设置有可旋转的切割刀片和固定的切割刀片，其定位成在两个分开的点处接合股线的公共卷积，并且切割卷绕的一部分以从股线切除一定长度的支线， 旋转的切割刀片旋转。 这种切割操作同时在从连续线切割的线的长度上形成尾端，并且在连续线的前端上形成头端。