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Electric Circuit Breaker

Description: Patent for circuit control apparatus that automatically opens the circuit when conditions are abnormal.
Date: January 30, 1917
Creator: Nielssen, Steffen F.
Partner: UNT Libraries Government Documents Department

Locking Mechanism

Description: Patent for locking mechanism, particulalry used in locking liquid dispensing machines.
Date: January 30, 1917
Creator: Bradley, Richard C.
Partner: UNT Libraries Government Documents Department

Drill Bit for Wells

Description: Patent for drill bit for drilling wells.
Date: January 2, 1917
Creator: Martin, Robert D.
Partner: UNT Libraries Government Documents Department

Oil Thief

Description: Patent for Oil Thief
Date: January 2, 1917
Creator: Kaul, Walter H.
Partner: UNT Libraries Government Documents Department

Soldering Device

Description: Patent for improved automatic soldering device.
Date: January 30, 1917
Creator: Bradley, Richard C.
Partner: UNT Libraries Government Documents Department

Pumping Mechanism

Description: Patent for pumping mechanism.
Date: January 9, 1917
Creator: Layne, Mahlon E.
Partner: UNT Libraries Government Documents Department
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