UNT Libraries Government Documents Department - 74 Matching Results

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Spur.

Description: Patent for an improvement in spurs, this one containing a forked end with a rowel on each end of the fork. This is to ensure the rowels have a broad surface adjacent to each rowel and to prevent less injury to an animal when in use.
Date: February 4, 1919
Creator: Cook, Landon H.
Item Type: Refine your search to only Patent

Stove-Lid and Damper

Description: Patent for a stove-lid and damper. Both the lid and damper have innovative spiral openings that can be brought into and out of alignment by rotation of the damper portion, thereby adjusting the size of the opening by which stove temperature can be adjusted.
Date: June 18, 1918
Creator: Parton, Clarence Ernest Stanhope
Item Type: Refine your search to only Patent

Leaf for Books

Description: Patent for certain improvements in leaves for books, specifically hotel registers and similar, that materially prolong the life of the leaf.
Date: April 23, 1918
Creator: Moore, William R.
Item Type: Refine your search to only Patent

Underscoring Attachment for Type-Writers.

Description: Patent for an improvement on an underscoring attachment for type writers that allows the user to use the functions of underscoring, correcting, and cancelling characters as they type, allowing some functions to occur simultaneously, including instructions and illustrations.
Date: July 17, 1917
Creator: Aiton, Fred
Item Type: Refine your search to only Patent

Railway-Switch Stand.

Description: Patent for a railway switch stand that locks "a switch of this class and from which the lock cannot be removed except when the switch is fully locked, thus obviating accidents by always insuring a locked condition of the switch after operation and thereby preventing the switch from being subsequently actuated by unauthorized persons" (lines 11-20), including illustrations.
Date: May 16, 1916
Creator: Berger, James H. & Rosson, George T.
Item Type: Refine your search to only Patent

Hay Rake

Description: Patent for a hay rake comprised of "a wheeled rake from, a support mounted behind the said frame, braces connecting the support with the rake frame, a fork having its stem swiveled in the support and rising above the same, a wheel carried by the fork, a draft tongue mounted on the support and located to the rear of the rake frame . . ." (100-107)
Date: September 28, 1915
Creator: Mallett, Charles J.
Item Type: Refine your search to only Patent

Marking Attachment for Planters.

Description: Patent for an attachment for agricultural machines, such as planters and cultivators, that marks off the distance between rows. The attachment consists of a marker that projects laterally from the ground to form a guide for the driver of the machine.
Date: April 8, 1913
Creator: Hallenbeck, Garrett L.
Item Type: Refine your search to only Patent

Fence-Post.

Description: Patent for a fence post made of sheet metal or iron, which does not require extra extra staples to attach wires and is durable.
Date: November 16, 1909
Creator: Mace, John O.
Item Type: Refine your search to only Patent

Ore Separator

Description: Patent for ore separator. This invention "relates to separators or concentrators for separating or extracting gold from pulverized quartz sand or bearing dirt" (line 8-11). Illustration included.
Date: May 11, 1909
Creator: Donovan, John T., Sr.
Item Type: Refine your search to only Patent

Mechanical Movement.

Description: Patent for improvements in mechanical movements by using cranks and wrist pins to “converting rotary motion, like that of a wheel or pulley, into reciprocating motion.” (Lines 12-14) Illustration is included.
Date: April 8, 1902
Creator: McKean, Frank
Item Type: Refine your search to only Patent
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