UNT Libraries Government Documents Department - 8 Matching Results

Search Results

Results: 1 - 8

Improvement in Spark-Arresters.

Description: Patent for improved construction of spark-arresters, "so that they will be more efficient, and yet simple in construction and not liable to get out of repair; and the invention consists of a metallic circular cone, with winding or arched flanges or wings, which extend toward the side of the shall, and they are covered by a plate, to the upper side of which a perforated cylinder is attached, so that all the sparks are arrested and thoroughly extinguished, while the smoke can pass out through the… more
Date: July 15, 1879
Creator: Lochner, Casper F.
Item Type: Refine your search to only Patent

Improvement in Rifle-Barrels.

Description: Patent for a "new and useful improvement in firearms" (lines 4-5), including instructions and illustrations. The invention provides "a gun-barrel with a number of cutters or plows for grooving the ball, said cutters or plows to correspond with with the number of guides or ribs which the gun is formed" (lines 20-25).
Date: December 11, 1877
Creator: Littlejohn, William
Item Type: Refine your search to only Patent

Improvement in Corn-Planters.

Description: Patent for "corn-planters in which the corn is planted in hills or rows; and the particular features of [the] invention consist in the combination, with a pivoted rising and descending charger or cup, of a sleeve-seat for said charger, a charger-carrying stem, and the seed-hopper, whereby the charger is held and carried in position upon a seat to fill, to rise from said seat, and to dump upon its pivot, and to be again brought into and maintained in a vertical position upon said seat while desc… more
Date: May 5, 1874
Creator: Williams, Blasius & Cohn, Morris
Item Type: Refine your search to only Patent

Improvement in Soldering-Irons.

Description: Patent for "an apparatus to be used with the common soldering-iron, whereby the same can be heated and kept heated continually while the iron is used." (Lines 6-9) Includes instructions and illustrations.
Date: December 19, 1871
Creator: Williams, Joseph
Item Type: Refine your search to only Patent
Back to Top of Screen