72 Report on Trials of Plows. 



which is given in Fig. 62, and the following extract from the 

 specification will give the idea of the inventor: 



"There is attached to the upper side of the mould-board, 

 which is of cast iron, a share which in its shape differs from any 

 other now in practice, it being fastened on the upper side of the 

 mould-board with screws, the point doubling over, but running 

 even with the land side, which is also made of cast iron, and 

 leaving a hollow under the mould-board so that small stones may 

 pass without interruption. The share is made of wrought iron 

 with a steel edge weighing from four to eight pounds." 



John Klay, of Maryland, received a patent for a plow dated 

 January 11th, 1812. 



Roswell Tousley, of Scipio, New York, received a plow patent 

 on the same day; this man was subsequently a partner of Jethro 

 Woods. 



John Seltz, of Pennsylvania, received one February 8th, 1813. 



Matthew Patrick, of New York, had a plow patented on the 

 2d day of January, 1813. 



Horace Pease, of Scipio, New York, received a patent for a 

 plow August 28th, 1813. 



Jethro Wood, of Scipio, New York, had a patent for a plow 

 granted July 1st, 1814. He did not attach much value to this 

 patent, and never attempted to introduce it extensively, as we arc 

 informed by his daughters. 



The next patents granted for plows were to John Swan, of 

 Scipio, New York, on the 5th day of July, 1814; to J. Morgan 

 and J. B. Harris, October 11th, 1814; to David Peacock, of New 

 Jersey, May 29th, 1817. 



Gideon Davis, of Maryland, received a patent for a plow May 

 26th, 1818. This plow is interesting, as it is the first attempt 

 since Jefi'erson's da}'^ to construct the mould-board on mathemati- 

 cal principles. The drawings will be found on Plate VI, and the 

 following specification will show the ideas which the inventor 

 sought to embody: 



"The great desideratum to be attained in the box share or 

 shallow plow, is that it be so shaped and constructed as to detach 

 the furrow slice from the solid ground, raise it up and turn it 

 over, in the neatest and most uniform and effectual manner, with 

 the least possible labor, both to the plowman and the team, com- 

 bining at the same time the advantages of being simple in its 

 structure, strong and durable, easy to keep in repair, and cheap. 



