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Amalgamator.

Description: Patent for a new and improved amalgamator. This design "consists in placing in the bottoms of the chambers a number of iron balls or other suitable-shaped pieces of amalgamated iron, which have sufficient room to move freely among themselves, and then forcing up through the balls or pieces of iron, in contradistinction to forcing it down over their tops, the amalgamated ore and water, so as to cause the pieces of iron to vibrate, and thus to grind and break the pieces of quartz passing up throu… more
Date: September 12, 1882
Creator: Schmidt, Erich Franz & Streernwitz, William Henry
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for a plow with a convex moldboard and a landside, or shoe, which in combination acts as a turning plow and subsoiler.
Date: June 12, 1883
Creator: Kennedy, George Finlay
Partner: UNT Libraries Government Documents Department

Combination Level.

Description: Patent for a new and improved combination level. This design "is broadly to provide a combined carpenter's and surveyor's level of a cheap, simple, light, and durable form, and adapted for use as a carpenter's plumb and level or a surveyor's level interchangeably without the removal or change of any of its parts; and to this end in consists in the conformation and arrangement of parts" (lines 19-26).
Date: June 12, 1883
Creator: Sands, James Harley
Partner: UNT Libraries Government Documents Department
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