UNT Libraries Government Documents Department - 367 Matching Results

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Acetylene-Gas Generator.

Description: Patent for "improvement in acetylene-gas generators, and has for one object to provide an exceedingly- simple apparatus of this description in which the pipes and connections are closed , and thus protected from freezing by the effects of atmospheric changes; and a further object of my invention is to remove the possibility of an explosion taking place during the manipulation of the machine." (lines 9-17) including illustrations.
Date: July 31, 1900
Creator: Hartman, Gus
Item Type: Refine your search to only Patent

Air-Brake Governor

Description: Patent for an air brake governor improvement that regulates the pressure of fluid or air in the braking system as to prevent it from braking with too much pressure.
Date: July 10, 1906
Creator: Williams, Leonard F.
Item Type: Refine your search to only Patent

Animal-Poke

Description: Patent for an animal poke which is worn around the belly of the cow or other animal, and pokes the animal when it pushes against a fence and has a hook attached to the back of the poke which will catch onto the fence if they try to go underneath or over the fence.
Date: July 28, 1908
Creator: Bush, Caswell C.
Item Type: Refine your search to only Patent

Animal-Poke.

Description: Patent for improvements in animal-poke by providing a device which is arranged for convenient application to an animal, so as not to interfere with the grazing and drinking thereof, and will effectually prevent the animal from destroying fences and also from pushing and fighting other stock. (Lines 9-15) Illustration is included.
Date: July 1, 1902
Creator: Barnes, John I.
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Animal-Poke

Description: Patent for an animal poke worn on the head of cattle to prevent jumping outside the field which allows the cow to graze freely while wearing the poke.
Date: July 16, 1907
Creator: Seay, Mark Machel
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Animal-Trap

Description: Patent for a small animal trap which consists of a cage suspended in the air on a spring system which drops when an animal disturbs the bait.
Date: July 20, 1909
Creator: Franks, Marion M.
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Apparatus for Testing Errors of Refraction

Description: Patent for an eye testing device that has a movable lens, a measuring device for correction, and two different cards with test type on them which are fed into the machine during testing for astigmatism and myopia, presbyopia, and hyperopia to determine the level of correction needed in glasses.
Date: July 2, 1907
Creator: Bahn, Gustavus Adolphus
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Apparatus for Treating Timber.

Description: Patent for an invention to aid in the treatment of treating timber. The invention is said to "provide a simple, inexpensive, durable, and efficient apparatus by means of which railroad cross-ties, fence-posts, and the like may be expeditiously and economically treated by immersion in a bath of some preserving liquid" (lines 16-22) including illustrations.
Date: July 11, 1905
Creator: Gerhard, Philip H.
Item Type: Refine your search to only Patent

Automatic Air-Brake Coupling.

Description: Patent for "a new and useful improvements in automatic air-brake couplers to enable others skilled in the art to make and use the same, the invention also relates to improvements in automatic air-brake couplings in cars". (lines 5-10) including instructions and illustrations.
Date: July 17, 1900
Creator: Cary, Lewis C.
Item Type: Refine your search to only Patent
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