78 
Of Patents, 
List of Patents that have been taken out of the office of the Secretary 
of State, from July, 1790, specifying the subject of the Patents, 
nvith their dates, and the names of the Patentees . 
1790. 
Samuel Hopkins, July 31, making pot and pearl ashes. 
Joseph Stacey Sampson, August 6, manufacturing candles. 
Oliver Evans, December 18, manufacturing flour and meal. 
1791. 
Francis Bailey, January 29, punches for types, &c. Sec. 
Aaron Putnam, January 29, improvement in distilling, 
John Stone, March 10, driving piles for bridges. 
Samuel Mulliken, March 11, machine for threshing grain and 
corn. 
Samuel Mulliken, March 1 1, breaking and swingling hemp, Sec. 
Samuel Mulliken, March 11, machine for cutting and polishing 
marble, Sec. 
Samuel Mulliken, March 11, machine for raising a nap on 
cloths, Sec. 
George Parkinson, March 17, machine for spinning flax, hemp ? 
Sec. 
Jonathan Dickerson, July 30, improvement in tide mills. 
Samuel Briggs, sen. and jun., August 2, machine for making 
nails. 
William Thomson, August 2, machine for threshing wheat, 8cc. 
Robert R. 'Livingston, August 4, diminishing the friction of 
spindles. 
John Biddis and Thomas Bedwell, August 10, making the ex- 
tracts of barks. 
Ludwig Conrod Kuhn, August 10, improved bedstead. 
Peter Gordon, August 10, manufacturing boots. 
Henry Voight, August 10, propelling boats by cattle. 
Henry Keyser, August 10, manufacturing gunpowder. 
James Macomb, August 26, horizontal w r ater wheels for mills. 
James Rumsay, August 26, Improvement of Dr. Barker's mill. 
Jamey Rumsey, August 26, improved mode of working mills. 
James Rumsey, August 26, Improvement of Savary’s steam 
engine. 
James Rumsey, August 26, Bellows. 
James Rumsey, August 26, generating steam. 
James Rumsey, August 26, Propelling boats or vessels. 
