MORTON, District Judge.
This is a suit for alleged infringement of the patent to Root and Conn No. 1,131,161, dated March 9, 1915, for safety devices on punching machines.
The patent relates to that class of machines in which a reciprocating part is brought powerfully against a fixed one, so as to squeeze or perforate the work which is interposed between them. All such machines are dangerous because of the possibility that the operative's fingers may be caught...
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