Kaye

This was an action for injunction and damages for infringement of United States Letters Patent No. 2074665, issued March 23, 1937, to plaintiff, Palmer, for a woven wire screen. The district court held that the patent was invalid for want of novelty and invention and because of insufficiency of the statement of claims, and held also that, assuming the validity of the patent, there had been no infringement.

, , , The record shows that the patent m ques- , , ^ , , , . tion relates to the art of forming woven wire screens for industrial purposes. These are the wire screens used for the separation into desired sizes, of aggregate in the miningj sand and gravel, and other businesses where it ¡s necessary to classify ore, rock, and other materials_

Such screens are ordinarily set on a slope or pitch, and caused to vibrate rapidly so that the material to be sorted passes over them from one end to the other.

T , . , . - , Industrial woven wire screens have been , . ,« « , , known for more than one hundred years. In their original form they were woven like cloth, or baskets, over and under. The place where the wire was bent around the crossing wire was called a “crimp”. As . u , , « ,…