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Well-Drilling Rig.

Description: Patent, including illustrations, for "an improved well drilling rig or apparatus" which provides "a simple, efficient, and practical machine of this kind including revoluble means having a device operatively connected to a walking beam (from which a drilling tool is suspended), so that upon every complete revolution of the revoluble means, the drilling tool or bit will be given two direct drops, each alternating with the lifting movement of the drill bit" (page 1, lines 11-21).
Date: February 3, 1920
Creator: Bradford, Robert M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well Screen.

Description: Patent for a well screen device. The device can keep particulates out of the well water while also restricting water to flow into the well without being released back into the soil.
Date: February 1, 1921
Creator: McLean, Marrs
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Building-Block.

Description: Patent for building block that is easily formed or molded. The building block forms tiers to easy move around and modify.
Date: February 1, 1921
Creator: Pace, Vara L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pump Cylinder

Description: Patent for a removable liner for a pump cylinder bore, including illustrations.
Date: February 24, 1914
Creator: Black, Lee J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Steam Face-Bath

Description: Patent for an apparatus that provides a steam bath for the face. Illustrations included.
Date: February 15, 1910
Creator: Dalzelle, Sanford J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Oil-Tank.

Description: Patent for an oil tank with an improved design for extinguishing fires inside the tanks and a means for allowing the escape of exploded gases upon accidental ignition.
Date: February 9, 1915
Creator: Wasson, Edgar Allen & Cooley, Francis Marion
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Manufacture of Aluminum Chlorid

Description: Patent for method of making aluminum chlorid, where a form of hydrated alumina is combined with coking coal, and then exposed to heat and chlorin/chlorin containing gas.
Date: February 27, 1917
Creator: McAfee, Almer M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut-lock that holds the nut more securely in place than previous ones. Used primarily in railroad joints, but can be used in a variety of other applications.
Date: February 19, 1907
Creator: Baldwin, John H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Manufacture of Aluminum Chloride.

Description: Patent for improvements of manufacture of aluminum chloride, comprising "a method of utilizing certain oily residues which are the result of treatment of oils with aluminum chloride or with substances capable of forming aluminum chloride" (lines 11-14), including illustrations.
Date: February 7, 1922
Creator: McAfee, Almer M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Still.

Description: Patent for a still designed to refine crude petroleum and extract lighter elements, including illustrations.
Date: February 11, 1919
Creator: Gallsworthy, Benjamin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pan Lifter and Turner.

Description: Patent for a pan lifter and turner using a bent handle, a curved plate is secured at the end of the bent handle; extending upward from the curved plate with a series of teeth to engages the crimped rim of a pan for lifting. At both ends of the curved plate provided with curved notches or recesses to receive and engage the rim of a pan for turning. Illustration is included.
Date: February 10, 1891
Creator: Ericson, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plunger.

Description: Patent for a plunger for use in pumps and air compressors that fits tightly into the cylinders of the machine.
Date: February 27, 1912
Creator: Ohmstede, August
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Garment-Fitting Device.

Description: Patent for a series of flexible bands and tapes to be used for efficient fitting of garments with regards to seam lines and marking patterns upon cloth by measuring the waist, skirt, and sleeve areas.
Date: February 2, 1909
Creator: Johnson, Mary M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Monolithic Wall.

Description: Patent for concrete wall construction which is light in weight and inexpensive to fabricate. Frames may be previously constructed in a manner to allow for windows and other common wall features.
Date: February 7, 1922
Creator: Graham, Malcolm J
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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