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in subjects: "Locks and keys"

Locking Device.

Patent for "improvements in locking devices for motor vehicle steering wheels" (lines 10-11).

Date: April 15, 1919

Creator: Crawford, Jesse L. & Dunlap, Jack R.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Locking and Operating System for Jail-Doors.

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

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Universal Lock and Latch.

Patent for an improved lock and latch system that can be utilized on either the left or right side of a door. The improved design is constructed using the minimum number of materials while remaining durable.

Date: September 14, 1920

Creator: Schultze, August J.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Safety-Lock For Doors and the Like.

Patent for improvements in door safety locks. Adding this simple and easy to manufacture lock allows a door to be locked from the inside, making the door inaccessible to anyone on the outside.

Date: June 21, 1921

Creator: Kless, Herman L.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Fastener for Meter-Boxes.

Patent for fasteners (locks) for meter-boxes to prevent tampering by unauthorized users by attaching a cover with rotating bolts that can be locked or unlocked with an accompanying key.

Date: February 19, 1918

Creator: Holmgreen, Julius H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Detachable Inside Door-Lock.

Patent for a detachable inside door-lock. This is a simple locking device that can be applied and removed from any type of door. The purpose is to make a room private and burglar proof.

Date: September 6, 1921

Creator: Arledge, Elbert H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Sash Lock

Patent for an improvement for window sash locks, with an improved ability to hold windows in place.

Date: January 10, 1922

Creator: Brown, John A.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Lock and Key.

Patent for a lock which requires a key that is adjustable and difficult to duplicate in order to prevent lock picking.

Date: June 28, 1921

Creator: Dove, Bascom A.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Auxiliary Door-Lock

Patent for an auxiliary door lock, that may be used with any type of door, and that is portable, with illustrations.

Date: March 2, 1920

Creator: Shirley, William Arthur

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Lock.

Patent for lock that is stronger when locked due to its unique structure and requires special knowledge to use, making it more secure against intruders.

Date: October 4, 1921

Creator: McGill, Wisdom

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Locking Device for Motor-Vehicles.

Patent for motor vehicle locking device to prevent theft or unauthorized use of motor vehicle. Suited for motor vehicles with the "throttle and spark levers below the steering wheel" (lines 18-19).

Date: May 3, 1921

Creator: Harris, Robert E.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Auto Steering-Lock

Patent for a lock designed to attach to the spokes of a steering wheel with the intention of guarding it from "unauthorized persons" (line 20), including illustrations.

Date: June 1, 1920

Creator: Cosby, Luther F.

Item Type: Patent

Partner: UNT Libraries Government Documents Department