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Silo-Door.

Description: Patent for a door for silos that is inexpensive and "comprises part of a ladder includes in a chute held in a position upon the silo by the door." (lines 16-18)
Date: May 25, 1920
Creator: Atkins, Thomas, B.
Partner: UNT Libraries Government Documents Department

Toupee and Wig Retainer

Description: A patent for a single-sided adhesive that holds a toupee or wig in place on the scalp without causing built-up residue to adhere to the wig.
Date: May 17, 1921
Creator: Tapscott, John Christoper
Partner: UNT Libraries Government Documents Department

Sanitary Cover-Pad for Mattresses.

Description: Patent for an improvement in sanitary pad covers for mattresses that is washable and contains pocket flaps underneath that can hold a sheet of waterproof material to protect the mattress beneath.
Date: May 11, 1920
Creator: Callahan, John William & Callahan, Maud B.
Partner: UNT Libraries Government Documents Department

Lock For Radiator Caps.

Description: Patent for a device to reliably and effectively secure the radiator cap in position on the filling neck of a radiator in order to avoid displacement. Device is of simple and durable construction and inexpensive to manufacture.
Date: May 9, 1922
Creator: Brown, Francis Nathaniel, Jr.
Partner: UNT Libraries Government Documents Department

Fluid-Conditioning Apparatus.

Description: Patent for an air conditioning apparatus that provides "new and improved means for moistening and cooling air," including the "collection and accumulation" of the cooling fluid (lines 10-12).
Date: May 31, 1921
Creator: Lindauer, William A.
Partner: UNT Libraries Government Documents Department

Locking Device for Motor-Vehicles.

Description: 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.
Partner: UNT Libraries Government Documents Department
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