Henry Billings Brown

“ In defendant's machine the same results are brought about, but in a manner which suggests the Nemelka as strongly as the Gray patent. As in the Nemelka patents, the vertical adjustment is accomplished by a set screw (instead of the eccentric used by Gray) , located at the lower end of the swinging bearing, by the turning of which the bearing is raised or lowered. But, as the vertical adjustment cuts no figure in the consideration of this case, it need not be further considered. Parallelism is also secured by horizontal set screws as in the Nemelka devices. ”

“ To understand accurately the scope of the Gray invention, it is necessary to consider some of the principal foreign patents, as well as the history of the Gray patent in the patent office, and the limitations which were imposed by it and accepted by him before the patent was granted. ”

“ From time immemorial wheat has been reduced to flour by grinding it between heavy disks of stone set upon a shaft, the upper one of which revolved, while the nether one remained stationary. The grain, being introduced through an opening in the center of the upper stone, was ground between the burred surfaces of the stones, and gradually found its way outward, until it was discharged from the periphery or skirt of the stones in the form of flour. ”