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in subjects: "locks"  
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Improvements in Sash-Lock

Description: Patent for an improvement on sash locks or fasteners for a window frame to allow two sashes to be controlled by one sash.
Date: June 16, 1903
Creator: Miller, John D.
Partner: UNT Libraries Government Documents Department

Automatic Railway Switch Lock

Description: Patent for an automatic railway switch lock. Illustration included.
Date: May 17, 1904
Creator: Sulfer, Charles
Partner: UNT Libraries Government Documents Department

Blind-Stop.

Description: Patent for a device which locks blinds in place at the desired angle.
Date: October 22, 1907
Creator: Koenig, Charles L.
Partner: UNT Libraries Government Documents Department

Automobile Lock.

Description: Patent for "certain new and useful improvements in automobile locks", including instructions and illustrations.
Date: February 13, 1917
Creator: Needham, Edmund T.
Partner: UNT Libraries Government Documents Department

Locking and Operating System for Jail-Doors.

Description: Patent for a new way to operate and lock jail doors "whereby each and every door in the system can be locked, unlocked and operated altogether, or any one, two or more doors can be locked, unlocked and operated without disturbing the other doors of the system" (lines 11-16), including illustrations.
Date: June 11, 1918
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

Locking System For Jail-Doors.

Description: Patent for a new locking system for jail-doors with a unique arrangement of parts, including specifications and illustrations.
Date: May 5, 1914
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

Key.

Description: Patent for a key, which can be produced in quantity but without any of them being able to open the same door.
Date: February 4, 1908
Creator: Katzenberger, Oscar
Partner: UNT Libraries Government Documents Department

Locking-Bolt for Guards to Openings.

Description: Patent for a locking mechanism for windows, which cannot be unlocked from the outside.
Date: March 31, 1908
Creator: McNeil, Clarence W.
Partner: UNT Libraries Government Documents Department

Locking System for Jail-Doors

Description: Patent for locking system for jail doors where locks of a series of cell doors can be operated simultaneously.
Date: January 27, 1903
Creator: Youngblood, David Franklin
Partner: UNT Libraries Government Documents Department

Lock

Description: Patent for a lock. This invention is a design of door lock that uses a key and combination. Illustration included.
Date: February 12, 1907
Creator: Katzenberger, Oscar
Partner: UNT Libraries Government Documents Department

Lock

Description: Patent for a lock. Illustration included.
Date: November 6, 1906
Creator: Katzenberger, Oscar
Partner: UNT Libraries Government Documents Department

Lock for Toy Banks

Description: Patent for a lock for toy banks. Illustrations included.
Date: June 22, 1909
Creator: Hansen, Christian
Partner: UNT Libraries Government Documents Department

Lock-Escutcheon.

Description: Patent for a lock escutcheon, which can be attached to the door on either side and which does not require carpentry expertise to install.
Date: November 16, 1909
Creator: Magruder, Paul K.
Partner: UNT Libraries Government Documents Department

Lock.

Description: Patent for a new and useful improvement in locks, including instructions and illustrations.
Date: May 30, 1899
Creator: Katzenberger, Oscar
Partner: UNT Libraries Government Documents Department

Lock.

Description: Patent for a new and useful combination lock designed for safe.
Date: February 15, 1898
Creator: Wise, Harry
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut lock for railroad tracks, which will prevent rail bolts from unscrewing.
Date: June 8, 1909
Creator: Mills, Thomas M.
Partner: UNT Libraries Government Documents Department

Tool for Drilling Wells.

Description: Patent for improvement in "tools for drilling or boring Artesian, oil, and other deep wells; and it has for its object to prevent the loss of the drill or auger or of any portion of the drill-rods" (lines 9-13) via an "improved means for connecting the tool to the lower end of the drill-rod" (lines 15-16) including illustrations.
Date: July 16, 1889
Creator: McLane, Hiram H.
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for "new and useful Improvements in Nut-Locks" (lines 5-6). "This invention relates to improvements in nut locks. The principal object of the invention is to provide a novel and efficient device for locking a nut on the end of an axle shaft or the like" (lines 12-17).
Date: December 7, 1915
Creator: Best, Eben
Partner: UNT Libraries Government Documents Department

Nut Lock

Description: Patent for a nut lock. Illustration included.
Date: June 13, 1905
Creator: Mills, Thomas M. & McKinnon, Thomas J.
Partner: UNT Libraries Government Documents Department

Nut Lock.

Description: Patent for a new and improved nut lock. This design consists in "[a] lock . . . for a nut having a non-circular recess in its rear face, consisting of a washer having a non-circular opening whereby it may be keyed upon a bolt and fitted to enter the non-circular recess of a nut, and a securing-plate having an opening fitted to receive the locking-washer" (lines 81-87).
Date: June 15, 1886
Creator: Unger, Louis
Partner: UNT Libraries Government Documents Department

Padlock.

Description: Patent for a new and improved padlock. This design "relates . . . more particularly to those padlocks which are used for locking railway-switches . . . [T]he invention consists in a padlock comprising a bow, or hasp, or shackle, a spring-bolt for engaging the same, tumblers, and a lever connecting the tumblers and bolt, a locking device for the tumblers, and an audible alarm, such as a bell" (lines 9-25).
Date: January 13, 1891
Creator: Lucas, George William
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a simple, inexpensive, and efficient improved nut-lock that "securely lock[s] a nut against accidental rotation, and adapted to be readily applied to single nuts having either right or left hand threads" (lines 12-15). The invention also is easily screwed and unscrewed without being damaged.
Date: June 18, 1895
Creator: Comminge, Frank
Partner: UNT Libraries Government Documents Department

Sash-Lock

Description: Patent for sash-lock.
Date: April 14, 1903
Creator: Miller, John D.
Partner: UNT Libraries Government Documents Department

Steering-Wheel Lock.

Description: Patent for an improved steering wheel lock that avoids the need for a specially constructed lock. Utilizes parts of simple, cheap and sturdy construction capable of being used in any motor vehicle design.
Date: February 15, 1921
Creator: Gerfers, Richard P.
Partner: UNT Libraries Government Documents Department
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