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Automatic Car-Switching System.

Description: Patent for "a system of switching where the cars of a train are pushed up an incline and placed successively on an elevated annular revolving platform, by which they are automatically distributed to their respective receiving-tracks" (lines 9-14).
Date: March 24, 1896
Creator: Lelardoux, Pierre
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wire Tightener.

Description: Patent for a new and improved wire tightener. This design consists in "[t]he combination of the bar having a longitudinal slot, with knife-edge and forked twisting-hooks, and the offsetting lever-handle having flat portion, with notch or wire-seat fulcrumed in the slot of the bar and having its outer end extended in the form of a prong between the twisting-hooks . . . to form a discharging device for the wire" (lines 64-72).
Date: March 19, 1889
Creator: Taylor, Shapley P. Ross
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Partner: UNT Libraries Government Documents Department

Improvement in Air-Cooling Apparatus.

Description: Patent for "the construction and arrangement of a refrigerator for the purpose of cooling and maintaining a low and dry temperature, for preserving fresh meats and vegetables, and for cooling rooms for any purpose." (Lines 10-15) Includes instructions and illustrations.
Date: March 30, 1875
Creator: Hyatt, Frank A.
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Partner: UNT Libraries Government Documents Department

Scuffle-Hoe

Description: Patent for a garden hand tool for destroying weeds and stirring, or aerating, soil. Used for garden crops.
Date: March 25, 1879
Creator: Munson, T. V. (Thomas Volney), 1843-1913
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Partner: UNT Libraries Government Documents Department

Shell or Projectile.

Description: Patent for a "shell or projectile for firing from large guns...which can be discharged from the gun without danger of the dynamite exploding from the shock incident to the projecting explosive" (lines 8-9, 11-14).
Date: March 21, 1911
Creator: Murphy, William L.
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Partner: UNT Libraries Government Documents Department

Sash-Fastener.

Description: Patent for a "device which will lock the sashes of a window when they are closed and which will secure them in any desired adjustment," (lines 11-14) including instructions and illustrations.
Date: March 15, 1892
Creator: Taber, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Safety-Casing Clamp

Description: Patent for a tool that supports the drilling and operating of oil and gas wells. Specifically, the patented tool allows a strong method of sealing the smaller casing inside the larger casing, as the larger casing is pulled out of the well. Includes illustrations.
Date: March 15, 1921
Creator: Angus, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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