Apparatus for convoluting webs onto rotary cores
    1.
    发明授权
    Apparatus for convoluting webs onto rotary cores 失效
    用于将卷筒卷绕到旋转芯上的装置

    公开(公告)号:US4218032A

    公开(公告)日:1980-08-19

    申请号:US13623

    申请日:1979-02-21

    CPC分类号: G03B27/588 G03B1/56 G03B17/26

    摘要: Apparatus for convoluting a web of photographic material onto a rotary core in a lighttight cassette has an elongated channel which is pivotably mounted in the cassette and whose outlet is normally tangential to the peripheral surface of the core. The outlet of the channel is detachably or permanently connected with a flexible or deformable strip-shaped element in the form of a link chain, plastic band, textile band or metallic band which surrounds a substantial part of or the entire peripheral surface of the core. When the leader of a web is introduced into and advanced beyond the outlet of the channel while the core rotates in a direction to convolute the web, the foremost part of the leader penetrates between the core and the flexible element and adheres to the peripheral surface of the core not later than upon the making of approximately two convolutions. During winding, the flexible element insures that the neighboring convolutions of the web on the core are tightly packed against each other. When the web is being withdrawn, the flexible element brakes the web and prevents clockspringing of convoluted material.

    摘要翻译: 用于将照相材料卷卷绕到光密封盒中的旋转芯上的装置具有细长的通道,其可枢转地安装在盒中,并且其出口通常与芯的外围表面相切。 通道的出口可拆卸地或永久地连接有环形链条,塑料带,纺织带或金属带形式的柔性或可变形的带状元件,该带状元件环绕芯的大部分或整个外围表面。 当纤维的引导件被引入并超出通道的出口时,其中芯沿着卷绕卷筒纸的方向旋转时,引导件的最前部分穿过芯部和柔性元件之间并附着到 核心不迟于大约两次卷积的制作。 在卷绕期间,柔性元件确保在芯上的纤维网的相邻卷圈彼此紧密地包装。 当纤维网被取出时,柔性元件制动纤网并防止卷曲材料的时钟弹簧。

    Photographic copying machine
    2.
    发明授权
    Photographic copying machine 失效
    摄影复印机

    公开(公告)号:US4035076A

    公开(公告)日:1977-07-12

    申请号:US645910

    申请日:1975-12-31

    IPC分类号: G03B27/58

    CPC分类号: G03B27/587

    摘要: A photographic copying machine wherein the leader of a fresh web of photographic paper is automatically threaded through a copying station and thereupon through one or more additional stations whereby the leader advances along an elongated path which is defined by stationary and pivotable guide members. Each pivotable guide member is movable by an electromagnet between an operative position in which it overlies at least a portion of an opening provided by the adjacent stationary guide member or members and an inoperative position in which the respective opening is exposed. Pivotable guide members are provided at a copying station where the web is exposed to printing light and at a feeding station where the web can form one or more loops in a suitable magazine when the respective pivotable guide member is moved to its inoperative position. One or more pivotable guide members can be yieldably retained in the respective operative positions by elastic or yieldably mounted locking bolts at least one of which can be disengaged from the respective pivotable guide member by an electromagnet or in response to the application of a predetermined force which acts against the respective pivotable guide members in a direction to move it to the inoperative position.

    摘要翻译: 一种照相复印机,其中相纸的新鲜卷筒纸的引导件自动穿过复印台,并随后通过一个或多个附加的位置,由此引导件沿着由固定和可枢转的导向件限定的细长路径前进。 每个可枢轴转动的引导构件可通过电磁体在可操作位置之间移动,操作位置在该操作位置上覆盖由邻近的固定引导构件提供的开口的至少一部分以及相应开口暴露在其中的不工作位置。 枢轴引导构件设置在复印站处,其中幅材暴露于打印光,并且在馈送站处,当相应的可枢转引导构件移动到其不工作位置时,幅材可以在合适的盒中形成一个或多个环。 一个或多个可枢转的引导构件可以通过弹性或可屈曲地安装的锁定螺栓可屈服地保持在相应的操作位置,其中的至少一个锁定螺栓可以通过电磁体与相应的可枢转引导构件脱离,或响应于施加预定的力 在将其移动到非操作位置的方向上相对于相应的可枢转引导构件作用。

    Photographic copying machine
    3.
    发明授权

    公开(公告)号:US3946922A

    公开(公告)日:1976-03-30

    申请号:US396457

    申请日:1973-09-12

    CPC分类号: G03B27/587

    摘要: A photographic copying machine wherein the leader of a fresh web of photographic paper is automatically threaded through a copying station and thereupon through one or more additional stations whereby the leader advances along an elongated path which is defined by stationary and pivotable guide members. Each pivotable guide member is movable by an electromagnet between an operative position in which it overlies at least a portion of an opening provided by the adjacent stationary guide member or members and an inoperative position in which the respective opening is exposed. Pivotable guide members are provided at a copying station where the web is exposed to printing light and at a feeding station where the web can form one or more loops in a suitable magazine when the respective pivotable guide member is moved to its inoperative position. One or more pivotable guide members can be yieldably retained in the respective operative positions by elastic or yieldably mounted locking bolts at least one of which can be disengaged from the respective pivotable guide member by an electromagnet or in response to the application of a predetermined force which acts against the respective pivotable guide members in a direction to move it to the inoperative position.