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    • 6. 发明授权
    • Paper punch with variable spacing
    • 纸张间距可变
    • US4036088A
    • 1977-07-19
    • US718968
    • 1976-08-30
    • Henry Ruskin
    • Henry Ruskin
    • B26F1/36B26F1/02
    • B26F1/36B26D2007/0018Y10T83/222Y10T83/7673Y10T83/8759Y10T83/8785Y10T83/8828Y10T83/885Y10T83/9476
    • Punching device for punching paper comprises a frame, a cooperating base supporting the frame, a plurality of individual punches removably and changeably mounted in the frame and an operating handle for actuating the punches. The frame is made of a single sheet of metal which is bent to form a U-shaped punch holding section comprising an upper portion, a lower portion and a portion connecting the upper and lower portions at one side and a die section which is joined with the lower portion of the punch holding section by a fold line and underlies such lower portion with an intervening space to receive the material to be punched. The upper portion and lower portion of the punch holding section have aligned bearing holes removably to receive and guide spring biased punches and the punching section has aligned punching holes to receive the lower ends of the punches when actuated by the operating handle. The base of the punch is formed of resilient plastic material and comprises a first portion closing the rear open side of the punch holding section of the frame, a second portion supporting the frame and a third portion which underlies the punching holes of the frame and provides a container in position to receive punchings. Flexible edge portions of the first portion of the base are engageable in annular recesses formed in the punches to provide means for removably retaining the punches in the holes of the frame in which they have been inserted.
    • 用于冲压纸的冲孔装置包括框架,支撑框架的协作底座,可移除地且可更换地安装在框架中的多个单独冲头和用于致动冲头的操作手柄。 该框架由单片金属制成,其弯曲形成U形冲头保持部分,该U形冲头保持部分包括上部,下部和连接一侧的上部和下部的部分和与该部分连接的模具部分 冲头保持部分的下部通过折叠线并且在这种下部具有中间空间,以接收要冲压的材料。 冲头保持部的上部和下部具有可拆卸的对准的轴承孔,用于容纳和引导弹簧偏压冲头,并且冲压部具有对准的冲孔,以在由操作手柄致动时容纳冲头的下端。 冲头的基部由弹性塑料材料形成,并且包括封闭框架的冲头保持部分的后开口侧的第一部分,支撑框架的第二部分和在框架的冲孔下面提供的第三部分 一个可以接受打孔的容器。 基部的第一部分的柔性边缘部分可接合在形成在冲头中的环形凹部中,以提供用于将冲头可移除地保持在其已被插入的框架的孔中的装置。