UNT Libraries Government Documents Department - 52 Matching Results

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Compressor.

Description: Patent for a refrigerating machine compressor, which compresses more gas, cools the compressor with the incoming gas, and uses excess heat to dry the gas coming in.
Date: April 19, 1910
Creator: Mayhew, John Daugherty
Item Type: Refine your search to only Patent

Airship

Description: Patent for an airship that is equipped with gas bags to control the ascent and descent of the airship and make it float in case of landing in the water.
Date: June 11, 1912
Creator: Bradshaw, John F. W.
Item Type: Refine your search to only Patent

Animal-Trap

Description: Patent for a foot trap for catching animals known for their furs that will prevent the animal from gnawing the trap or his foot off.
Date: May 9, 1911
Creator: Roberson, Elige L.
Item Type: Refine your search to only Patent

Grave-Cover

Description: Patent for a device to provide a temporary cover to open graves made of non-rusting materials with adjustable length.
Date: September 19, 1912
Creator: Rankin, Daniel H. & Cox, William, E.
Item Type: Refine your search to only Patent

Wrench.

Description: Patent for a wrench that can hold round-headed fastening elements (bolts) so as to prevent from turning in the same direction. The wrench can be held while the jaws grip and hold the round heads of bolts.
Date: October 23, 1917
Creator: Wright, John G.
Item Type: Refine your search to only Patent

Plow.

Description: Patent for a reinforced plow shoe that eliminates frictional wear on the landside bar and reduces wear on the landside plate of the plow.
Date: October 16, 1917
Creator: Alston, William H.
Item Type: Refine your search to only Patent

Hay-Press.

Description: Patent for hay-presses relating to the arraignment and and construction of the means for operating the plunger of the press whereby reciprocation of the plunger may be secured by the revolution of an arm or lever whereby a single or double reciprocation of the plunger during a single revolution of the arm or lever may be secured as desired.
Date: October 9, 1917
Creator: Dudley, John Z.
Item Type: Refine your search to only Patent

Rail-Joint

Description: Patent for rail joints which "requires no extra plates or parts like the usual joint; that is stronger and more durable; that it is more readily assembled and that the parts are efficiently united; that only one bolt is required..." (lines 9-14).
Date: September 5, 1916
Creator: Gilmore, Aaron W.
Item Type: Refine your search to only Patent

Door-Operator.

Description: Patent for a device that is a means of mounting a train car door by which it may be easily opened or closed, and especially easily fixed when stuck.
Date: August 26, 1913
Creator: Gradick, Wiley, Sr.
Item Type: Refine your search to only Patent
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