Emack v. Kane

This is a bill in equity, in which the complainant seeks to restrain the defendant Kane from sending circulars injurious to the complainant’s trade and business. Both complainant and defendants are manufacturers of what are known as “noiseless” or “muffled” slates for use of school children. The complainant is tlio owner of a patent issued to one Ebcnozer Butler, February 15, 1870, In which the slate was muffled, or rendered noiseless, as it is said, by making a slot through the frame near'the outer edge, into which was spirally wound a piece of listing, cloth, or other-fibrous material,…