Henry Billings Brown

“ If the combination of the trough and cylindrical guide of the Wright patent gives greater lightness and strength to the frame than the combination of the trough and the flat guides of the Farrar patent, it is a mere difference in degree; a carrying forward of an old idea; a result, perhaps, somewhat more perfect than had theretofore been attained, but not rising to the dignity of invention. ”

“ The opening in the guiding cylinder, which is supposed to be the equivalent of the connecting piece, d, instead of increasing so as to form a semicircular opening, as in the patent, decreases, so as to prevent, if anything, ready access to the stuffing box, and, under the circumstances, does not constitute a mechanical equivalent for it. Indeed, the guiding cylinder of the defendant's engine bears a stronger resemblance to those shown in the prior patents hereinafter cited than to that of the Wright patent ”