Summary

William Strong Mason v. Graham — Opinion of the Court

The object of the invention patented to the complainant was to produce an accurate and sure picker-staff motion in looms by a combination of devices, which, while giving great accuracy of motion, should so guide and hold the picker-staff as to enable it to work with the least possible friction and lateral disarrangement, commonly called 'wabbling.'
In all picker-staff motions it is desirable, if not essential, that the end of the staff made to strike the shuttle should move in a right line, so as to drive the shuttle directly along the shuttle-race in the line in which it is desired to play.
Source: Wikisource

William Strong Mason v. Graham — Opinion of the Court

The journals, moreover, having bearings in the ears of the bed, steady the rocker, resist any lateral movement, and prevent what is denominated as wabbling. As the picker-staff is made to oscillate, its rocker rises and sinks upon the arm, and thus most of the friction caused by the play of the staff comes upon the shaft, or journal-bearing arm, and not upon the tread of the rocker or the bed-plate.
We think the invention has no relation to any mere form of a journal-bearing arm. Nor do we think it consists in arranging a journal-bearing arm in a slot in the rocker.
Source: Wikisource

William Strong Mason v. Graham — Opinion of the Court

In our opinion it embraces every combination of a rocker with a bed and loose journal-bearing arms, arranged so as to produce the result described in the specifications as effected by the combination.
And we have been unable to perceive that the invention was anticipated by any of those devices which the defendant has given in evidence. We do not propose to go into any critical examination of them. The case does not call for it.
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature