Impact line printer
    3.
    发明授权
    Impact line printer 失效
    冲击线打印机

    公开(公告)号:US4070963A

    公开(公告)日:1978-01-31

    申请号:US676094

    申请日:1976-04-12

    申请人: John H. Weaver

    发明人: John H. Weaver

    IPC分类号: B41J9/10 B41J9/38 G06K15/07

    CPC分类号: B41J9/38 B41J9/10

    摘要: An impact line printer having a plurality of high velocity, small mass pivoted print hammers. Both a high print density and an unusually high impact printing force is achieved by actuating the hammers by a corresponding plurality of closely packed solenoids whose diameters are substantially larger than the spacing of the print hammers. These solenoids are mounted in the same vertical space but engage their associated print hammers a predetermined distances S.sub.1 and S.sub.2 from the hammer pivot axis. Appropriate selection of these distances S.sub.1 and S.sub.2 achieves uniform printing pressures from all of the hammers while using identical solenoids and identical drive currents. A paper engaging clamp includes a driven drive roller mounting a pair of resilient O-rings. A pair of pinch rollers, rotatably mounted on pivoted plastic lever arms, are adapted to clamp the paper or other printing medium between the rollers and the O-rings upon application of a force to the lever arms. The resiliency of the lever arm enables print media of varying thickness to be readily incorporated in printers constructed in accordance with this invention. A simplified pawl and ratchet wheel assembly employing a single spring is used to advance the drive roller. A platen sub-assembly comprises a unitary platen member molded of plastic and including a series of comb-like guides for the print hammers. The top surface of the platen supports the printing media within the impact line printer and the plurality of print hammers as well as the pinch roller support arms are pivoted within the platen member.

    摘要翻译: 一种冲击线打印机,具有多个高速,小质量的枢转打印锤。 通过相应的多个紧密包装的螺线管致动锤来实现高打印密度和异常高的冲击印刷力,其直径大大大于打印锤的间距。 这些螺线管安装在相同的垂直空间中,但是使其相关联的打印锤从锤枢转轴线接合预定距离S1和S2。 这些距离S1和S2的适当选择在使用相同的螺线管和相同的驱动电流的同时,实现了来自所有锤的均匀印刷压力。 纸张接合夹具包括安装一对弹性O形环的从动驱动辊。 可旋转地安装在枢转的塑料杆臂上的一对夹送辊适用于在对杆臂施加力时将纸张或其它打印介质夹在辊和O形环之间。 杠杆臂的弹性使得具有不同厚度的印刷介质容易地并入根据本发明构造的打印机中。 使用单个弹簧的简化的棘爪和棘轮组件用于推进驱动辊。 压板子组件包括由塑料模制并包括用于打印锤的一系列梳状引导件的整体压板构件。 压板的顶表面支撑冲击线打印机内的打印介质,并且多个打印锤以及夹送辊支撑臂在压板构件内枢转。

    Rotatable, flexible flagpole arrangement
    4.
    发明授权
    Rotatable, flexible flagpole arrangement 失效
    可旋转,灵活的旗杆安排

    公开(公告)号:US4949525A

    公开(公告)日:1990-08-21

    申请号:US326280

    申请日:1989-03-21

    申请人: John H. Weaver

    发明人: John H. Weaver

    IPC分类号: E04H12/32

    摘要: An improved rotatable flagpole arrangement for supporting a flag or banner includes an elongate pole with structure thereon for mounting a flag or banner, a lower stop surface attached to the pole and a novel bearing arrangement between the stop surface and a support surface which utilizes a pair of embossed washers. The pole may be formed of a flexible material such as PVC so that it curves away from the wind as it rotates relative to the support socket, which creates a novel, dynamic visual effect.

    摘要翻译: 用于支撑标志或横幅的改进的可旋转的旗杆布置包括其上具有用于安装旗帜或横幅的结构的细长杆,附接到杆的下止动表面和在止挡表面和支撑表面之间的新颖的轴承装置,其利用一对 压花垫圈。 极可以由诸如PVC的柔性材料形成,使得其在相对于支撑插座旋转时可以远离风弯曲,从而产生新颖的动态视觉效果。

    Cassette for strain recorder
    5.
    发明授权
    Cassette for strain recorder 失效
    纸盒用于应变记录仪

    公开(公告)号:US4487382A

    公开(公告)日:1984-12-11

    申请号:US414820

    申请日:1982-09-03

    申请人: John H. Weaver

    发明人: John H. Weaver

    CPC分类号: G01D13/26

    摘要: A cassette for a scratch strain recorder has a rotatable supply bobbin geared directly to a rotatable take-up bobbin so that rotation of the take-up bobbin will be equal in amount but opposite in direction to that of the supply bobbin. The recording tape is formed of a roll of flat resilient material which has one end attached to the supply bobbin and which, in the unused condition, is almost totally wound around the supply bobbin except for the other end which is attached to the take-up bobbin. The tape is driven by a capstan and pinch roller, the capstan being arranged for driving connection to a drive shaft of the strain recorder itself. Because of its inherent resilience the coil tries to straighten, i.e. unwind, and this assists rotation of the two bobbins when the capstan is operated and the direct gear interconnection causes an equalization of the spring forces between the two bobbins as the cassette progresses from an unused condition to a nearly completely used condition.

    摘要翻译: 用于临时应变记录器的盒子具有可旋转的供给筒管,其直接连接到可旋转的卷绕筒管,使得卷取筒管的旋转量将相等而与供给筒管的方向相反。 记录带由一卷扁平的弹性材料制成,其一端连接到供给线轴,并且在未使用的状态下,几乎完全缠绕在供应线轴上,除了附接到卷取机的另一端 线轴。 磁带由主导轴和夹送辊驱动,主导轴布置成驱动连接到应变记录器本身的驱动轴。 由于其固有的弹性,线圈试图拉直,即退绕,并且当主导轴被操作时,这有助于两个线轴的旋转,并且直接齿轮互连导致当两个线轴之间的弹簧力平衡时, 条件到几乎完全使用的条件。

    Radial arm saw cutting gauge
    6.
    发明授权
    Radial arm saw cutting gauge 失效
    径向臂锯切割仪

    公开(公告)号:US4170158A

    公开(公告)日:1979-10-09

    申请号:US923932

    申请日:1978-07-13

    申请人: John H. Weaver

    发明人: John H. Weaver

    IPC分类号: B23Q17/22 B27B27/02 B27B27/00

    摘要: An elongated gauge bar bent along its longitudinal center to form a pair of longitudinally extending flanges at right angles to each other and each having inner and outer surfaces and an outer longitudinal edge. Each outer surface is provided with transverse dimension indicating lines calibrated in an arithmetical system differing from that of the lines of the other surface. The gauge bar is used on the guide bar of a radial saw to accurately indicate a dimension at which a workpiece is to be cut by the saw blade.

    摘要翻译: 细长的条棒沿着其纵向中心弯曲以形成一对彼此成直角的纵向延伸的凸缘,每个具有内表面和外表面以及外纵向边缘。 每个外表面设有在与另一表面的线不同的算术系统中校准的横向尺寸指示线。 量规杆用于径向锯的导杆上,以准确地表示锯齿形切割工件的尺寸。