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1800 U.S. Patents

<< - 1799 Patents
Evans, Oliver on January 16, 1800
#X000267 improvement on stoves and grates, unknown

Gorham, Stephen on February 4, 1800
#X000268 machine for spinning rope yarn and twine, MA

Constant, Silas on February 4, 1800
#X000269 composition to preserve wood, brick, etc., NY

Gebhard, John G. on February 4, 1800
#X000270 extracting oil from Palma Christi, NY

Bolitho, Benjamin on February 7, 1800
#X000271 machine for pounding rice, gunpowder, etc., PA

Shotwell, William on February 7, 1800
#X000272 metal boxes for wood or iron to turn in, NJ

Hawkins, John J. on February 12, 1800
#X000273 improvement in piano fortes, PA

Killey, Hattil, 2nd on February 12, 1800
#X000274 method of covering salt vats from the weather, unknown

Lyon, Patrick on February 12, 1800
#X000275 engine for throwing water, PA

Ladd, Nathaniel on February 12, 1800
#X000276 extracting the essence of sumack, fera, etc. for tanning, unknown

Cox, James on February 20, 1800
#X000277 raising or lifting hides in tanning, NJ

Tyler, Benjamin on February 20, 1800
#X000278 improvement in grist mills, NH

Percy, John on March 3, 1800
#X000279 improvement in dying blue, unknown

Harris, William on March 15, 1800
#X000280 lathe or loom for weaving, unknown

Hoyt, Comfort, Jr. on April 7, 1800
#X000281 machine for manufacturing sumack, CT

Hottensteen, William on April 10, 1800
#X000282 improvement in coach collars, PA

Walker, Peter on April 10, 1800
#X000283 stop cock, NY

Howard, Dean on April 10, 1800
#X000284 improvement in the manufacture of boots and shoes, MA

Stone, Silas on April 6, 1800
#X000285 improvement in the elastic truss for ruptures, MA

Biddis, John on April 6, 1800
#X000286 engine for reducing silk, cotton, worsted, cloth, and to their original state to be manufactured, PA

Jocelin, Simeon on April 8, 1800
#X000287 silent moving time keeper, unknown

Brown, Jeremiah on May 14, 1800
#X000288 improvements in the construction of ships and vessels, RI

Hadfield, George on May 15, 1800
#X000289 machine for making bricks and tiles Washington, DC

West, Edward on May 19, 1800
#X000290 metal amulets, KY

Harrison, Thomas O. on May 19, 1800
#X000291 machine for splitting hides and skins, NJ

Smith, Robert on May 19, 1800
#X000292 mould board of a plough, PA

Shotwell, William on June 24, 1800
#X000293 cogs for pullies, NJ

Lorillard, Peter on June 28, 1800
#X000294 machine for cutting tobacco, NY

Deneale, James, Jr. on July 10, 1800
#X000295 kiln for drying grain, VA

Lossing, Peter on August 4, 1800
#X000296 improvement in burning lime, NY

Butler, Frederick on August 22, 1800
#X000297 machine for cooking, CT

Young, Frederick on August 23, 1800
#X000298 machine for cutting and heading nails, NY

Kilborn, Jonathan on August 23, 1800
#X000299 machine for cutting tanner's bark, CT

Cooley, David, Jr. and Philips, Gabriel N. on August 25, 1800
#X000300 improvement in chimneys, NY

Weld, Ezra on September 17, 1800
#X000301 "lavater" machine for washing and wringing clothes, unknown

Mansfield, Richard on October 24, 1800
#X000302 improvement in manufacturing bricks, CT

Brookfield, Aaron on October 24, 1800
#X000303 raising water for mills, NJ

Hawkins, John J. on October 24, 1800
#X000304 improvement in musical instruments, PA

Grout, Jonathan, Jr. on October 24, 1800
#X000305 telegraph (description filed) Belchertown, MA

Murray, Samuel on November 17, 1800
#X000306 obtaining force from water with the assistance of steam Oxford, NH

Young, William on November 20, 1800
#X000307 hanging windows without weights Windham, CT

Patent records through July 1836 were burned in a fire.
They have been researched and are called "X-Patents" when found.
Not all have been found and consolidated into the new list.

Officially patents of this era have an "X" at the end of the patent number, but that is not always the case. Research online often put the "x" in the front of the number, and we have used that system

Fractional numbers are designed to update patents, but keep them in sequential order.
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