Hendey Machine Co. v. Prentice Bros.

BROWN, District Judge.

This suit is for infringement of claims 2 to 7, inclusive, of letters patent No. 470,591, granted March 8, 1892, to Wendell P. Norton, for feed mechanism for screw cutting lathes. The defendant’s device is constructed according to letters patent No. 787,537, granted April 18, 1905, to Albert E. Newton for change speed gearing for engine lathes. The object of the patentee, Norton, was to produce changes in the speed of the feed-shaft which gives movement to the carriage containing the screw-cutter.

The device and its mode of operation will appear from an examination of…