Collection
Serial/Series Title
7.5 Minute Series (Topographic)
101
2000 Census County Subdivision Block Map
85
1990 Census County Block Map
80
2010 Census County Block Map
78
2010 Census P.L. 94-171 County Block Map
76
2000 Census County Block Map
70
Digital US Topo Maps: 7.5 Minute Series (Topographic)
70
Digital Raster Graphic Topographic Maps: 7.5 Minute Series (Topographic)
35
Western United States 1:250,000
19
2007 Economic Census Map
8
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704 Matching Results
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Results:
697 - 704 of
704
Cotton Seed Planter
Patent for a cotton seed planter. Illustration included.
Date:
May 23, 1911
Creator:
McGuire, Daniel Harry
Object Type:
Patent
System:
The Portal to Texas History
Self-Cleaning Currycomb.
Patent for a type of self-cleaning currycomb that removes debris from the comb teeth by way of a cleaning plate.
Date:
November 11, 1913
Creator:
Minich, James J.
Object Type:
Patent
System:
The Portal to Texas History
Process of Mining Sulfur.
Patent for innovations in the underground fusion or Frasch process of mining sulfur, "which comprises conducting an appropriate fusing medium [such as hot water] into the formation containing the sulfur deposit and thereby melting the sulfur" (lines 91-95). Central to the innovations is the use of a compressed gas to "eliminate or largely reduce heat losses in porous rock and exhausted sulfur regions at the higher levels of the mine where the presence of the hot water is of no benefit so far as melting sulfur is concerned" (lines 55-60).
Date:
December 27, 1921
Creator:
Drachenberg, August Toby
Object Type:
Patent
System:
The Portal to Texas History
Automatic Stabilizer for Aeroplanes
Patent for an automatic stabilizer for aeroplanes. This invention is a gyroscopically controlled means for correcting undue tilt in longitudinal axis. Illustration included.
Date:
October 1, 1912
Creator:
Yeamans, Eugene
Object Type:
Patent
System:
The Portal to Texas History
Acetylene-Gas Generator
Patent for an acetylene-gas generator. Illustrations included.
Date:
April 26, 1910
Creator:
Moberley, Oscar R.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Fountain-Valve for Locomotives
This patent relates to new and useful improvements in an automatic fountain valve for locomotives. The purpose of the invention is to provide a valve that will automatically close in the case of the locomotive overturning. This valve will cut off the escaping or steam from broken pipes and prevent the scalding of engine-men who may be trapped in the cab.
Date:
March 26, 1918
Creator:
Yeamans, Eugence N.
Object Type:
Patent
System:
The Portal to Texas History
Combination Hoe and Plow
Patent for a tool that can be used as either a hoe or a plow. Illustrations included.
Date:
July 16, 1912
Creator:
Willis, William B.
Object Type:
Patent
System:
The Portal to Texas History
Combined Separator and Bagging Device for Grain
Patent for a thresher attachment that uses a suction fan to separate grain from lighter materials and allows the grain to be collected in a bag or other container.
Date:
May 15, 1906
Creator:
Henninger, Thomas C.
Object Type:
Patent
System:
The Portal to Texas History