Bradley Pulverizer Co. v. Bowker Fertilizer Co.

Citations

• 111 F. 537
• 1901 U.S. App. LEXIS 4982

Syllabus

<p>1. Patents—Infringement—Mills foe Pulverizing Ores.</p> <p>In the Griffin patent, No. 410,757, for improvements in mills for, pulverizing ores, claims 13, 14, and 15, which relate to devices for discharging the ground material from the mill, if valid, are limited to substantially the combination of devices described in the specification, and are therefore not infringed by a mill in which stirrers on the bottoms of the rolls are used instead of the elevating inclines or shoes described in the patent, to project the pulverized material towards the openings.</p> <p>2. Same.</p> <p>The Griffin patent, No. 515.673, for improvements in mills for pulverizing ores, claim 5, the important element in which is the use of stirrers on the bottoms of the rolls to effect the agitation and elevation of the * ground material, must be limited, in view of the prior patents granted to the same inventors for mills having similar stirrers, to their use in'eonnectiou with the particular form of driving mechanism described in the specification. As so limited, helé not infringed.</p>