MR. JUSTICE BROWN, after stating the case, delivered the opinion of the court.
The three patents involved in this suit are for an improved belt pulley, and for the manufacture of the same. Each of them requires a separate consideration.
1. Patent No. 248,599 is for an improved process of manufacturing that class of belt pulleys formed of a wrought-metal rim and a separate centre, usually a spider, and usually made of cast metal. The drawings represent the...
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