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Music-Indicator.

Description: Patent for a device that is set upon a piano or other keyed instrument to indicate keys and chords, with illustrations.
Date: January 21, 1908
Creator: Hobart, Frederick Earl
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Permutation-Lock.

Description: Patent for a device of a permutation lock. One of its objects is to improve the permutation mechanism thereof and to provide novel means whereby the combination of the lock may be changed.
Date: November 17, 1914
Creator: Meepos, Max
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Padlock.

Description: Patent for a padlock, which can only be opened with a certain key and prevents the use of many lock-picking devices.
Date: February 4, 1908
Creator: Katzenberger, Oscar
Item Type: Refine your search to only Patent
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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telegraph-Key.

Description: Patent for certain new and useful improvements in telegraph keys, including instructions and illustrations.
Date: September 4, 1898
Creator: Lewis, Frank E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

LOCK.

Description: Patent for a keyed lock with "an improved mounting and arrangement of the locking tumblers whereby the same are properly held against displacement within the body of the lock so that they will properly engage with the locking bolt."
Date: July 13, 1915
Creator: Dunaway, Harrison
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Piano Key Bushing.

Description: Patent for an improved piano key bushing that designed to reduce sticking of the keys. Important parts of the bushing are made of metal and given ample room to expand without causing friction that might cause the keys to stick.
Date: August 25, 1914
Creator: Rogers, Karl C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lock-Nut.

Description: Patent for a new and improved lock nut design, including illustrations, that efficiently and reliably "locks the nut against rotation upon the bolt" (lines 14-15).
Date: October 5, 1915
Creator: Mitchell, Thomas T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

[Man holding a key, 2]

Description: Photograph of a man holding up a key in front of a church congregation. The man stands in the center of the image in the background near the altar, he holds the key in his right hand and has it raised near his head. The rest of the image is made up of the congregation sitting in pews with their backs to the camera, and an open window is seen to the left of the man in the background.
Date: [1939..1989]
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

Safety-Lock For Doors and the Like.

Description: 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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

[Hillman Jewelry Sale]

Description: Contact print of five people standing together in front of a curtain, identified as Mr. & Mrs. Hillman, Mr. & Mrs. Rankin, and Herbst. The two men on the ends of the group are reaching across the front to hold a set of keys.
Date: unknown
Item Type: Refine your search to only Photograph
Partner: Patrick Heath Public Library

Lock and Key.

Description: 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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combined Torch and Gas Burner Key.

Description: Patent for a new and improved combined torch and gas-burner key. This design "relates to a device for lighting gas-burners and operating the cock of the gas-burner, and has for its object to provide a combined torch and key by means of which the gas may be lighted without the flame of the torch coming in contact with the globe surrounding the burner and the cock of the gas-burner readily taken hold of and operated" (lines 8-15).
Date: October 15, 1889
Creator: Lindsay, George Washington
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lock.

Description: Patent for a new and improved lock which includes "certain novel constructions, combinations, and arrangement of parts" (lines 11-13) as well as illustrations and instructions.
Date: September 21, 1897
Creator: Peterson, John J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

[Man holding a key]

Description: Photograph of a man holding up a key in front of a church congregation. The man stands on the right side of the image and holds up the key in his right hand, and holds a folded over songbook at his waist with his left hand. The majority of the congregation sits in pews to the left of the man either paying attention to the man or reviewing their song book, a young boy is seen in the bottom right corner looking directly at the camera.
Date: [1939..1989]
Creator: Clark, Joe
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

Universal Lock and Latch.

Description: 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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Auxiliary Door-Lock

Description: 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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Locking Device.

Description: 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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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