List of Patents . 157 
would all be young and of a proper thickness. I do not 
like them of a larger size than the specimens sent. 
I am at present engaged in several experiments, to en- 
deavour to propagate the thorn from the branches, which, 
if successful, I will communicate to you ; but I am of 
opinion, that what is now done is sufficient. 
Should the society require any further explanations, 1 
shall be happy in doing my utmost to furnish such ex- 
planations. 
SAMUEL TAYLOR. 
Moston, near Manchester, 
May 6th, 1805. 
To the Society of Arts, ££c. 
No. 22, 
List of American Patents .* 
(Continued from page 80.) 
1792. 
Benjamin Folger, January 2, cleansing whale oil. 
Obadiah Herbert, January 28, spinning and twisting thread. 
John Bailey, February 23, Steam Jack. 
David Hartley, February 24, hardening and tempering steel. 
David Ridgeway, March 7, improvement in making bricks, 
Samuel Green, March 28, canvass conductor to be used when 
houses are on fire. 
Timothy Kirk and Robert Leslie, May 9, weaving of wire. 
Thomas Farrington, May 9, Machine for sawing wood and bark. 
George Morris, July 10, preservation of plants from frost, &c. 
Samuel G. Dorr, October 20, Machine called “ the wheel of 
knives,” for shearing and raising the nap on cloths, 
Sol. Hodge and J. Dorr, Oct. 23,Handmill for picking millstones. 
1793. 
James Caldwell and Christopher Batterman, Jan. 26, improved 
machine for manufacturing tobacco. 
Joseph Pope, January 26, improvement in wind mills, 
* Nicholson, vol, 12. p. 220. 
