UNT Libraries Government Documents Department - 12 Matching Results

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Attachment for Sulky-Plows.

Description: Patent for a sulky-plow that "is designed to secure an even and steady movement of the plow when turning furrows across listed ground, whereby the work is facilitated, the draft lightened, and the task of the laborer reduced" (lines 9-13).
Date: October 13, 1896
Creator: Mann, John Quincy
Item Type: Refine your search to only Patent

Earth Auger.

Description: Patent for a new and improved earth auger. This design "relates to machines for boring post-holes, &c.; and it consists especially in certain improvements in the frame and operating mechanism" (lines 21-24).
Date: December 13, 1881
Creator: Blake, Llewellyn A.
Item Type: Refine your search to only Patent

Oil-Purifier

Description: Patent for "a construction wherein the oil may be quickly and economically heated to cause the impurities to separate from the oil" (lines 9-12).
Date: August 13, 1901
Creator: Carter, George Fitzhugh
Item Type: Refine your search to only Patent

Pipe-Tongs.

Description: Patent for pipe tongs used for rotary well boring machinery. The tongs are designed to be carried with and used by rotary machines.
Date: February 13, 1912
Creator: Johnston, Horace G.
Item Type: Refine your search to only Patent

Rotary Attachment

Description: Patent for an attachment for rotary well drilling machinery meant to "provide means for automatically gripping a pipe when being raised to prevent such pipe from slipping back while the lifting tools are being lowered for such lifting" (lines 13-17)
Date: April 13, 1915
Creator: Johnston, Horace G.
Item Type: Refine your search to only Patent

Surgical Splint.

Description: Patent for a surgical splint specifically for the substitution of erectile tissue of the corpora cavernous of the genital organ to promote fecundation even in the absence of an erection.
Date: July 13, 1920
Creator: Renois, John J.
Item Type: Refine your search to only Patent
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