Method and apparatus for making business form dummy

作者: Samuel R. Olsen , Robert Lapp

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摘要: The following specification describes a method together with portable apparatus for forming on site test dummies of stacks business forms to provide facsimile actual conditions under which the paper is imprinted. This done by simultaneously manually perforating and crimping stack containing desired number type then aligning plurality serially arranged in web means splicing jig enable simulation an run. includes plate carrying dies punches jig. are operated cam having continuous surface engaged punch holder. protrude from holder different distances so that they pierce at times reduce manual force required operation.

参考文章(3)
Emmer Charles Edward, Portable punching machine ,(1947)