UNT Libraries Government Documents Department - 40 Matching Results

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Leaf-Turner.

Description: Patent for a leaf turner for turning the pages of a book, which is connected to a treadle operated with the feet to change the pages.
Date: August 30, 1910
Creator: Berliner, Selma Ellis
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Electrical Testing Device.

Description: Patent for an electrical device with an improved circuit arrangement in combination with various devices all assembled in compact arrangement on a board which enables to easily locate faults in various electrical apparatus or parts. This electric device is capable of use by anyone who isn't skilled as an electrician.
Date: March 30, 1920
Creator: Bierbower, Richard C.
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Rotary Plowshare

Description: Patent for rotary plowshare that allows for improvements in plows. This detachable element rotates as it moves within the earth, pulverizing and disintegrating it while doing so. This rotary plowshare will accelerate cultivation and provide cost savings in time and labor.
Date: August 30, 1921
Creator: Billingsley, Rennie E.
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Car-Coupling

Description: Patent for "a car-coupler which will be automatic in its operation in coupling the cars as they come together on the track, and at the same time to provide a positive uncoupling device which may be operated on any part of any of the cars, as well as by an engineer, when it is desired to uncouple the cars or a car from the engine" (lines 14-21).
Date: October 30, 1888
Creator: Carolan, Eugene P. & Lee, Patrick H.
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Cheese-Cutter

Description: Patent for cheese cutter that features improvements which include guides for the knife, the box and cover, and the means for holding the cheese in place on a rotatable platform.
Date: December 30, 1902
Creator: Niggli, Emil
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Lard-Extracting Machine.

Description: Patent for a machine by which lard, or other substance with a similar consistency, "may be extracted directly from the original shipping vessel, such as a barrel... so that the lard will be expelled though and delivered from a dispensing nozzle" (lines 18-23); including instructions and illustrations.
Date: December 30, 1913
Creator: Paolucci, Henry E.
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Cotton-Condenser.

Description: Patent for a cotton condenser that can receive lint cotton and form it into a continuous bat so that it can be passed from condenser to compress. It provides better quality of lint that is formed into the bat by removing dust and inferior fibers.
Date: May 30, 1911
Creator: Reagan, Edgar U. G.
Item Type: Refine your search to only Patent
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