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Bell-Ringer.

Description: Patent for a bell ringer for use in locomotives, with instructions and illustrations.
Date: March 1, 1892
Creator: Baker, John L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Clock.

Description: Patent for an improved alarm clock with two different alarms that sound at desired time set and when the clock is unwound, including illustrations.
Date: April 11, 1916
Creator: Buttigieg, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Alarm.

Description: Patent for an alarm designed to attach to windows or entryways and sound to alert residents of a burglary attempt, with illustrations.
Date: May 29, 1906
Creator: Hobbs, Francis Marion
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combined Door-Bell and Mail-Receiver.

Description: Patent for a door-bell joined with a tray or card-receiver, which is installed in a door. "When pulled out it will bring said tray outside the door to receive a card, letter, or package or any mail-matter, and when released will carry it inside the door again" (lines 11-15). The bell goes off when the tray, which has a toothed edge that engages the bell-hammer, is released.
Date: September 22, 1896
Creator: Key, Joseph H.; Brevard, Horace & Purifoy, William R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Improvement in Devices For Ringing Bells.

Description: Patent for an improvement to a mechanism that externally strikes a bell to ring it, "applicable to fire, hotel, school, church, factory and other bells. By it the striking may be performed with great rapidity and regularity" (para. 10).
Date: September 18, 1877
Creator: Perry, Elton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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