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Safety-Casing Clamp

Description: Patent for a tool that supports the drilling and operating of oil and gas wells. Specifically, the patented tool allows a strong method of sealing the smaller casing inside the larger casing, as the larger casing is pulled out of the well. Includes illustrations.
Date: March 15, 1921
Creator: Angus, William M.
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Partner: UNT Libraries Government Documents Department

Rotary Engine

Description: Patent for a rotary engine with a better flow of fluid to the casing.
Date: February 7, 1911
Creator: Nichols, Franklin Priestley
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Partner: UNT Libraries Government Documents Department

Caisson-Driver.

Description: Patent for an improved machine that sinks caissons into gravel or mud in order to make a foundation for breakwater, jetty, bridge, or similar purpose. It applies continuous and heavy pressure to the caisson during operation, and "is provided with a jet apparatus to force the sand and mud from within the caisson and cause it to settle around the outer portion of the same, thus holding it firmly in place, and which in general enables a caisson foundation to be laid with great facility and in a su… more
Date: April 4, 1893
Creator: Perrenot, Theodore F.
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Partner: UNT Libraries Government Documents Department

Grapple

Description: Patent for providing a cheaper version of removing pipes or tubing from wells.
Date: March 18, 1913
Creator: Drake, Charles W.
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Partner: UNT Libraries Government Documents Department

Hay-Press.

Description: Patent for improvements in baling-presses and is practically adapted to bale hay, in which “the hay may be held at the rear end of the frame against the pressure of the follower and head-blocks or presser-blocks.” (Lines 17-20) Illustration is included.
Date: August 11, 1891
Creator: Cox, Benjamin G.
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Partner: UNT Libraries Government Documents Department

Corn-Sheller.

Description: Patent for improvement in corn-shellers; in which “it consists in a perforated casting provided with radial teeth or projections which extend toward its center and which is to be secured to a support having an opening through it, combined with a double-ended handle which has an opening through its center and teeth projecting from the opening.” (Lines 13-20) Illustration is included.
Date: September 22, 1891
Creator: Bander, Charles Bornet
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Partner: UNT Libraries Government Documents Department
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