UNT Libraries Government Documents Department - 4 Matching Results

Search Results

Results: 1 - 4

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
Item Type: Refine your search to only Patent

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design "consists in the combination, with a draw-head, of an L-shaped lever pivoted in the same and provided at its angle with a lug, which L-shaped lever has a coupling-pin suspended from the end of the long arm, and has its short arm passed into an aperture in the inner end of a bar sliding in the bottom of the draw-head, whereby when the lug is depressed the coupling-pin will be raised and the bar in the draw-head will push the l… more
Date: June 12, 1883
Creator: Appell, Charles E.
Item Type: Refine your search to only Patent

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
Item Type: Refine your search to only Patent

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
Item Type: Refine your search to only Patent
Back to Top of Screen