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in subjects: "Business, Economics and Finance"  
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Lubricator.

Description: Patent for an efficient lubricator apparatus that is made up of a reservoir for lubricating oil, a discharge pipe, another pipe that feeds water or condensed steam into the reservoir to displace the oil, a sediment container that has a valved discharge outlet on the bottom, a filter that cleans oil from the discharge pipe, a pipe that lets fluid into the sediment receptacle, and a steam pipe above the oil reservoir.
Date: July 16, 1895
Creator: Herold, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Trade-Book.

Description: Patent for a Trade Book intended to document discount credentials, expense accounts, daily reminders, and a diary for a number of business types including hotels, retailers, and advertisers.
Date: April 30, 1901
Creator: Glisson, Amos A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Hydraulic Pressure and Time Indicator

Description: Patent for hydraulic pressure and time indicator for "recording the times when hydraulic cylinders are in operation and to indicate when the cylinders commence work or reach the required pressure" (lines 10 - 14).
Date: December 24, 1918
Creator: Helm, Clyde D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gearing for Windmills.

Description: Patent for gearing for windmills that "is more particularly designed to provide an improved construction of gearing by which the movement of the wind wheel is transmitted to the pump rod, whereby [the inventor] secures superior advantages with respect to efficiency in use" (lines 14-19).
Date: April 23, 1895
Creator: Keys, Milton
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Envelope.

Description: Patent for an improved, simple, and durable envelope that can hold many letters, documents, and similar materials. "The invention consists of two overlapping end flaps connected with each other by a band and forming, with the front, an expansible pocket for the accommodation of the documents, a top flap and a bottom flap adapted to be folded one above the other, and both over the end flaps, and a band for holding the top and bottom flaps closed" (lines 12-19).
Date: October 10, 1893
Creator: Scougale, Malcolm
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cultivator-Hopple.

Description: Patent for "a cultivator hopple that will require very little manual exertion to adjust the cultivator beams between their limiting positions." (lines 10-13) including instructions and illustrations.
Date: March 30, 1915
Creator: Hill, Josef D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Coin-Controlled Apparatus.

Description: Patent for a simple, inexpensive, and durable coin-controlled apparatus that is "designed to indicate by the varying positions occupied by the spheres, the nature of a dream, the apparatus being designed primarily as a dream-revealer" (lines 17-20). The operator pulls a lever which forces the dice inside the glass container to move into holes. The operator reads a key on the outside of the device that indicates what he will dream.
Date: July 18, 1893
Creator: Taylor, James P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Building Tile.

Description: Patent for "hollow blocks" or "tile and hollow corner blocks" that "prevent moisture from passing through walls" (lines 10-14).
Date: December 31, 1918
Creator: Bennett, Walter R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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