4 Matching Results

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Car-Replacer. (open access)

Car-Replacer.

Patent for "car-replacers or wrecking-frogs employed for guiding the wheels of a derailed car or locomotive to the rails." (Lines 7-10) Includes instructions and illustrations.
Date: February 11, 1896
Creator: Hawkins, Robert B.
Object Type: Patent
System: The Portal to Texas History
Safety-Clamp. (open access)

Safety-Clamp.

Patent for a safety clamp that secures wagon seats in place.
Date: February 7, 1911
Creator: Gammon, William Willey
Object Type: Patent
System: The Portal to Texas History
Economic Impacts of Groundwater Management Standards : In the Panhandle Groundwater Conservation District of Texas (open access)

Economic Impacts of Groundwater Management Standards : In the Panhandle Groundwater Conservation District of Texas

"The objective of this study was to conduct an economic analysis of how the 50/50 management standard would impact irrigated producers in the region and the overall agricultural economy. Specifically this analysis was conducted on three levels: county, hydro-logic area, and representative farm. The study focused on the dynamic changes in agricultural production, saturated thickness, farm revenue, and the capacity to irrigate. A socioeconomic model was subsequently used to estimate changes in the regional economy due to changes in gross farm income that may occur under the 50/50 management standard." (p. 5).
Date: February 28, 2012
Creator: Weinheimer, Justin
Object Type: Report
System: The Portal to Texas History
Churn. (open access)

Churn.

Patent for a novel churn "whereby the dasher or agitator carried by staff or stem within the churn body will be simultaneously rotated and reciprocated...and the reciprocation will effectively agitate the contents of the churn for churning the same" (lines 14-21), with illustrations.
Date: February 16, 1915
Creator: Logan, William L.
Object Type: Patent
System: The Portal to Texas History