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Changes in Groundwater Conditions in the Edwards and Trinity Aquifers, 1987-1997, for Portions of Bastrop, Bell, Burnet, Lee, Milam, Travis, and Williamson Counties, Texas

Description: The purpose of this report is to update the Texas Water Development Board's Report 326, addressing groundwater problems in the study area related to unreliable supplies during short-term drought demands and long-term economic development.
Date: November 1999
Creator: Ridgeway, Cindy & Petrini, Harald
Item Type: Refine your search to only Report

Clip

Description: Patent for a clip that may be used to bind paper, plies of fabric, or as a clothes pin. Illustrations included.
Date: November 26, 1907
Creator: Porter, Louis H.
Item Type: Refine your search to only Patent

Cattle-Guard

Description: Patent for a cattle guard for use at railroad tracks incorporating a depressible platform connected to a closing mechanism which will impede movement of cattle across the track, but allow for unobstructed movement at other times.
Date: March 20, 1906
Creator: Richter, Fred Otto & Richter, Gustav Adolph
Item Type: Refine your search to only Patent

Cattle-Guard.

Description: Patent for an improved cattle-guard by using a guard that has a plurality of spurs, should an animal step thereon its foot will be directed against one or more of these spurs, thus causing the animal to withdraw its foot and not attempt to pass over the rail. This will prevent the animal from crossing railway-tracks, but the spurs will not interfere with the free passage of trains. (Lines 10-20) Illustration is included.
Date: April 2, 1901
Creator: Steinmann, Herman Werner
Item Type: Refine your search to only Patent

Attachment for Harrows

Description: Patent for attachment of harrows that facilitate the use of harrows in pilling cotton stalks. This device allows the harrows to be in continuous motion creating efficiency in cotton pilling.
Date: March 11, 1913
Creator: Taylor, David T. & Barker, Felix
Item Type: Refine your search to only Patent

Well-Drilling Machine.

Description: Patent for “a new and improved well-drilling machine adapted to be driven by horse-power and arranged to permit of actuating the drilling tools for drilling purposes and to allow of conveniently and quickly raising the tools from the well…” (lines 8-14) including illustrations.
Date: November 18, 1902
Creator: Moore, Robert Burns
Item Type: Refine your search to only Patent
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