UNT Libraries Government Documents Department - 146 Matching Results

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Sulfuric-Acid Process of Extracting Precious Metals From Solutions

Description: Patent for "new and useful Imporivements in Processes of Recovering Precious Metals from Their Solutions, and which I designate as the 'Sulfuric-Acid Process;' [...] to separate the precious metals from their cyanid solutions in a rapid and thorough matter and to recover the precious metals from solutions thereof." (lines 5-8 & 22-26)
Date: June 23, 1903
Creator: Bahn, Gustavus A.
Item Type: Refine your search to only Patent

Pipe-Clamp.

Description: Patent for a pipe clamp for drawing well casings out of wells that can be used on different size pipes and grips harder as resistance increases.
Date: July 23, 1907
Creator: Benedict, George Spencer
Item Type: Refine your search to only Patent

Dental Plugger.

Description: Patent for a dental plugger which has a movable cylinder on the interior with a "piston-like mallet working in the cylinder and adapted to strike the same, to impart movement to the dental tool" (lines 93-95).
Date: October 23, 1900
Creator: Blum, Robert
Item Type: Refine your search to only Patent

Rail-Joint.

Description: Patent for improvements in rail-joint by providing “a fastening means for rail-joints adapted to embrace the bottom and top sides of the foot and the sides of the web of the rail and to extend along the underside of the head, so as to brace the joint vertically.” (Lines 16-31) Illustration is included.
Date: October 23, 1900
Creator: Boyd, Henry M. & Redmon, Hope
Item Type: Refine your search to only Patent

Level.

Description: Patent for a spirit level, which measures more accurately than other models and allows quicker calculation of where the wood needs to be moved to be level.
Date: November 23, 1909
Creator: Brittain, Thomas H.
Item Type: Refine your search to only Patent

Cotton-Sweep.

Description: Patent for cotton sweep. This invention helps in easy spreading and setting of sweeping blades, "since it provides a novel form of brace to be interposed between the blades of the sweep and the stock" (lines 15-17).
Date: December 23, 1902
Creator: Brown, Burel J.
Item Type: Refine your search to only Patent

Bale-Tying Machine.

Description: Patent for a bale tying machine that wraps and ties cylindrical bales, "especially for placing wrappers of jute or other bagging material around cylindrical cotton - bales" (lines 11-14) while holding the bale compressed.
Date: January 23, 1906
Creator: Cagle, Carter M.
Item Type: Refine your search to only Patent

Bow Facing Oar

Description: Patent for an oar facing the bow side of the craft. The invention allows for the rower to sit facing the direction of movement of the boat and be able to apply greater amounts of exertion. Illustration included.
Date: October 23, 1906
Creator: Case, William C.
Item Type: Refine your search to only Patent

Spark-Arrester.

Description: Patent for a steam train locomotive spark arrester consisting of curved pipe smoke stack that holds solid particles of exhaust on the edges of the pipe, which are expelled by the force of exhaust gases coming through, into the fire box thereby preventing their escape outside the engine reducing danger from stray sparks. This system also uses less fuel than previous systems.
Date: April 23, 1907
Creator: Chalfant, Cotter Strawn
Item Type: Refine your search to only Patent

Plow Attachment

Description: Patent for a plow attachment. This design has improvements for the foot portion of plows and cultivators. The attachment is easy to apply, and can be adjusted accordingly.
Date: January 23, 1906
Creator: Clark, Samuel Houston
Item Type: Refine your search to only Patent

Revolving Kitchen Cabinet

Description: Patent for a revolving kitchen cabinet. This invention is an adapted improvement to create economize space and save time in food preparation of food. Illustrations included.
Date: October 23, 1906
Creator: Clements, Rollings Alsobrook
Item Type: Refine your search to only Patent
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