Home/U.S. Circuit Court for the District of Northern California/Risdon Iron & Locomotive Works v. Trent

Risdon Iron & Locomotive Works v. Trent

92 F. 375, 1899 U.S. App. LEXIS 2973
U.S. Circuit Court for the District of Northern California·Decided January 23, 1899·No. No. 12,293·Published·Cited by 9 cases

Opinion

MORROW, Circuit Judge.

This is a suit for the infringement of letters patent No. 538,884, dated May 7,1895, for an ore crusher. The inventor was August H. Schierholz, whose application for the patent was filed in the patent office February 5, 1895. By an assignment made after the application, and before the granting of the letters patent, Schierholz transferred all the property in the invention to the complainant.

The invention relates to improvements in ore-crushing machines, in which crushing rolls are caused to travel within the circumference of a pan, upon suitable dies arranged around the periphery, and which have a fixed central post, and consists of novel means for driving the rolls, and allowing for the irregularities of movement caused by the ore over which the rolls pass, without interfering with the vertical shaft or its gear and connections. The details of construction are explained by reference to the accompanying drawings:

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Risdon Iron & Locomotive Works v. Trent, 92 F. 375, 1899 U.S. App. LEXIS 2973 (circtndca 1899).

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