UNT Libraries Government Documents Department - 3 Matching Results

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Nut Lock.

Description: Patent for a new and improved nut lock. This design consists in "[t]he combination of the bolt, the nut having a dovetailed groove across its face, of uniform width throughout its length, and a recess at one side of said groove, and a key having tapered sides and sliding into the dovetailed groove from one side of the nut, said key having a pointed end to engage the bolt and also provided with a projecting part to be bent over into engagement with the recess in the nut" (lines 69-78).
Date: April 19, 1892
Creator: Robinson, William D.
Item Type: Refine your search to only Patent

Pump.

Description: Patent for an improved, useful, durable, and simple pump that is powered by cattle as they walk into an enclosure. It consists of a water receiving chamber with inlet openings on one end, supporting rods, a hollow pump piston with a spout, a valve on the bottom of the pump piston, a walking beam, a bridge, hinges, angle-irons, and a counterbalances weight.
Date: April 18, 1893
Creator: Clayton, James W.
Item Type: Refine your search to only Patent

Water-Elevator

Description: Patent for "an apparatus for use in connection with a well, whereby the well-bucket will be automatically elevated and emptied into a trough by the weight of the cattle that may come to the well to drink, the apparatus be ing particularly designed for use in the Western countries, where large numbers of cattle come to each well in herds" (lines 16-23).
Date: April 1, 1890
Creator: Campbell, George W.
Item Type: Refine your search to only Patent
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