UNT Libraries Government Documents Department - 8 Matching Results

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Car-Coupling.

Patent for improved car couplings "of the Janney type, capable of readily coupling on short curved, and adapted to be either coupled or uncoupled without going between cars. A further object of the invention is to provide means whereby the parts may be readily set for automatic coupling, or to prevent coupling." (Lines 13-20) Includes instructions and illustrations.

Date: March 19, 1895

Creator: Armstrong, James P.

Combination Chair and Ironing Board

Patent for a chair that can fold and act as an ironing board. Illustration included.

Date: October 19, 1909

Creator: Hufft, Rose; Harrell, Cullen Carr & Hufft, John J.

Electric-Current Relay

Patent for Electric-Current Relay to allow capability of use with either a direct or alternating current. This is adapted for economical use in constant temperature apparatus. Further, this technology avoids the possibility of "sticking of relay movable contacts".

Date: July 19, 1921

Creator: Lorenz, Charles O.

Improvements in Burners

Patent for improvements for burners. It is related explicitly to hydrocarbon burners. Its purpose is to keep the oil and steam separate as they leave the burner by keeping them in two separate streams.

Date: June 19, 1918

Creator: Trahan, Clair A

Non-Refillable Bottle.

Patent for improvements to non-refillable bottles to prevent tampering and/or re-filling of container with alternate substance. Item is designed to be used on any ordinary bottle.

Date: August 19, 1902

Creator: Allen, Edward

Nut-Lock.

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.

Valve For Oil Wells

Patent for a valve for oil wells. This invention is designed to control the flow of oil during drilling. Illustration included.

Date: September 19, 1905

Creator: Bernard, Horace D.

Wrench.

Patent for wrench related device "for locking the gripping element after it is applied to the pipe or other pipe (lines 14-15)" including instructions and illustration.

Date: October 19, 1915

Creator: Black, Lee J.