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    • 2. 发明授权
    • Cutting tool
    • 切割用具
    • US3864829A
    • 1975-02-11
    • US38748373
    • 1973-08-10
    • WILLIAMS JOHN
    • WILLIAMS JOHN
    • B26F1/44B26B3/08
    • B26F1/44B26F1/40B26F2001/4463
    • The tool presents a combination of specially lune-shaped, object-excising cutter rigidly mounted on a transparent base, and a similarly shaped stripper also carried by the base and resiliently biased to yield and move within and relative to the cutter. The cutter has a cutting edge defining a crescent-like cutter contour, this edge projecting from the mounting base in the direction in which the tool is manually translated in a cutting operation. The cutter is a two-piece one presenting generally nested, oppositely facing surfaces of arcuate lunar shape; and these surfaces are respectively mated externally, mounted and braced by transparent Lucite blocks, which coact to constitute the cutter holding body. To this end each cutter knife edge or razor blade component is rigidly secured to its own mated mounting block by screws tapped into the latter; and said blocks are in turn rigidly secured together by a pair of bolts or studs spanning the meeting line of the blocks. The knife edges or blades of the two cutter lunes converge at opposite extremities to a quite close adjacency to one another, but are nevertheless still a trifle spaced sufficiently to avoid forming thin feather edges on the excised piece, in the interest of insuring a clean stripping of the latter from the cutter. The stripper plate is normally disposed in the horizontal plane of the actual razor edge of the cutter. Springs enable the stripper plate to yield upwardly within the cutter as it slices downwardly through the excised sheet, then as fully compressed to automatically eject the excised product from the cutter.
    • 该工具提供了刚性地安装在透明基底上的特殊的Lune形状的物体切除刀片和由基座承载的类似形状的剥离器的组合,并且弹性偏置以在刀具内并相对于切割器移动。 切割器具有限定新月形切割轮廓的切割边缘,该边缘从安装基座沿着在切割操作中手动平移工具的方向突出。 刀具是两件式的,通常呈弧形月球形状的嵌套相对面的表面; 并且这些表面分别由外部配合,通过与构成刀具保持体共同作用的透明Lucite块安装和支撑。 为此,每个切刀刀刃或剃刀刀片部件通过螺丝拧入其中的螺钉牢固地固定到其自己的配合安装块; 并且所述块通过跨越块的会合线的一对螺栓或螺柱刚性地固定在一起。 两个切割器切割器的刀刃或叶片在相对的两端彼此接近相交,但仍然是足够小的间隔,以避免在切除的部件上形成薄的羽毛边缘,以确保清洁的剥离 后者来自刀具。