“This was an action for the infringement of a patent granted to E. Treadwell, for an improvement in forming and piercing bread, called by him ‘a cracker or biscuit finisher.’ The specification describes the different parts of the machine, amongst which are the circular cutters, the piercers, and the clearers, which cut, pierce, and clear the biscuit at one operation. The plaintiff claims, as assignee of Treadwell, all his right and title to the said invention, so far as the same applies to the city and county of Philadelphia, and to all other cities and towns on the river Delaware, from Chester to Easton, and to Wilmington and Newcastle. Plea, the general issue, with notice of special matter.”