UNT Libraries Government Documents Department - 122 Matching Results

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Improvement in Gun-Locks.

Description: Patent for gun locks: "This invention relates to the arrangement of a complete hair trigger for Colt's revolving pistols, which is so constructed that it may be adjusted to anyone of said pistols without the assistance of a gunsmith, the only tool required for the purpose being a screw driver." (lines 21-26.)
Date: September 11, 1866
Creator: Schenck, F.
Item Type: Refine your search to only Patent

Improvement in Hair-Triggers.

Description: Patent for improvement in fire-arms by arranging a hair-trigger on to a fire-arm that have a guard and a trigger without alternation of the interior mechanism of the gun-lock; it is not necessary for the application of a fly in the hammer to prevent the catching of the trigger in the rest-notch of the hammer. (Lines 11-19) Illustration is included.
Date: August 24, 1869
Creator: Schenck, F.
Item Type: Refine your search to only Patent

Improvement in Hat-Ventilators.

Description: Patent for improvement in mode of ventilating hats, bonnets, and or caps by “providing the inside of the head-coverings, at the point of contact with the head, with a liuing or an elastic spiral formed into a cushion, through which the air can freely circulate around the whole head.” (Lines 28-32) Illustration is included.
Date: March 30, 1869
Creator: Stremme, Conrad C.
Item Type: Refine your search to only Patent

Improvement in Hats

Description: Patent for "a new and improved ventilated hat...which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification" (lines 3-5). including instructions and an illustration.
Date: September 1, 1868
Creator: Watkins, M. S.
Item Type: Refine your search to only Patent

Improvement in Hot-Air, Steam, and Water-Gauge.

Description: Patent for improvements in hot air, harmonic steam, and water gauges: "In this invention several tubes pass through the boiler, some under and some above the water, through which currents of air are induced by the heat of the water or steam surrounding them" (lines 8-9).
Date: October 8, 1867
Creator: Walker, James C.
Item Type: Refine your search to only Patent

Improvement in Machine for Cutting Stalks in the Field Preparatory to Plowing.

Description: Patent for improvement in machine for clearing cotton and corn-fields of the stalks after the crops have been gathered by “providing a revolving drum or roller with knives, set spirally around it, which cut the stalks of cotton or corn-fields into pieces of any desired length, for the purpose of being plowed under the surface for fertilizing, by rolling it over them.” (Lines 14-19) Illustration is included.
Date: May 4, 1869
Creator: Wright, Reuben
Item Type: Refine your search to only Patent

Improvement in Needle-Threaders for Sewing-Machines.

Description: Patent for improvement in needle-threaders for sewing machines by using an “eyelet-frame that formed by two equal parallelopipeds. These parallelopipeds are being kept together by two springs and may be separated by pressing the pins toward each other.” (Lines 32-35) “The axis of a conical eyelet will be laid in the joint planes of the parallelopipeds, its apex in the front side, its basis in the opposite side of the eyelet-frame, through which eyelet the thread has to pass when the instrument… more
Date: April 20, 1869
Creator: Thielepape, Wilhelm C. A.
Item Type: Refine your search to only Patent

Improvement in Plows.

Description: Patent for improvement in plows: "The invention consists in so attaching a revolving disk, cutter, or colter to the beam of the plow that it will rotate on its own axis, and vibrate laterally, to accommodate itself to the line of draft or direction of the beam of the plow; also, in the means used by which the revolving cutter or colter is attached to the beam of the plow, and having the means of swiveling or turning in the beam to accommodate itself to the line of draft of the plow" (lines 22-3… more
Date: December 28, 1869
Creator: Hall, Thomas J.
Item Type: Refine your search to only Patent

Improvement in Seed-Planters.

Description: Patent for an improved seed-planter "which will deposit the seeds in the requisite quantities and proper distances apart, and which will cover and mark the bills, so that a plowman will not be at a loss where to start at the commencement of a new row, and after having passed around tree-stumps or other obstructions, as he can always see the marks on the preceding rows" (lines 16-23) with illustrations.
Date: December 21, 1869
Creator: Woods, David C.
Item Type: Refine your search to only Patent
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