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Vending-Machine.

Description: Patent for improvements in the construction of coin-operated vending machines which automatically lock when coins are not inserted. This device is designed to dispense objects of many shapes and sizes. Illustrations included.
Date: January 6, 1920
Creator: Ogden, Carlton N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gas-Governor.

Description: Patent for an improved gas governor that are used with gas-meters in supply-buildings and accurately regulates gas flow and pressure. The invention is a general improvement on gas governors, and is efficient in its operation.
Date: August 15, 1893
Creator: Martyr, Leonard W. & Eldridge, Hilliary
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cut-Off Valve.

Description: Patent for a cut-off valve meant to improve shut-off valves with "valve-plugs mechanically actuated by rotary valve-stems provided with cranks or eccentric pins which loosely engage the valve-plugs and serve to shift the latter longitudinally to or from the valve-seats when the stems are rotated" (lines 9-14).
Date: June 23, 1895
Creator: Melvin, Josiah W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Book with Removable Cover

Description: Patent for a removable cover for a pass book (a book where a customer's bank deposit account is kept). When a customer's pass book is filled the cover can be removed and refilled with a new pass book.
Date: September 10, 1918
Creator: Malsch, Herman C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Check-Book.

Description: Patent for improvements to check-books for easier access to the check stubs.
Date: April 10, 1917
Creator: Schwander, Peter W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Conveyer System.

Description: Patent for "an improved conveyer system that will take a package and automatically carry it to any selected point along the system, discharge the package and return to the starting point" (lines 8-12), including illustrations.
Date: March 18, 1919
Creator: Hanak, Edward
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combined Shoot-Board and Squaring-Box.

Description: Patent for a combined shoot-board and squaring-box meant to square and shave "the edges of stereotype and other printing plates; ant to this end the invention contemplates a device of this character that will be of an exceedingly simple and comparatively inexpensive construction, while at the same time providing for an easy and accurate manipulation of the plates being operated upon" (lines 10-17).
Date: December 18, 1894
Creator: Owen, Thomas
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Apparatus for Washing and Scrubbing Gas.

Description: Patent for a washer-scrubber that cleans gas from "tarry matter, ammonia, sulphureted hydrogen, carbonic acid and other impurities" (lines 14-16). The machine divides gas into streams, sprays it with washing liquor, spreads it over reticulated and perforated plates.
Date: March 7, 1893
Creator: Fitzgerald, John H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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