Newbold Plow - cast iron plow by Charles Newbold
The Newbold Plow
The plow evolved from the all-wood designs of antiquity, to the use of iron parts. In 1720, the first English patent for a wooden moldboard sheathed with iron was issued to Joseph Foljambe. From that the evolution to plows made with cast iron moldboards and shares occurred in Scotland in 1785 by James Small. These cast iron plows were then imported to the U.S.
Charles Newbold, born in Chesterfield, NJ (1780), spent his teenage years investigating the use of cast iron to improve on the heavy iron-clad wooden plow then available. He was issued the first US patent for a plow on 26 Jun 1797. The plow was cast as one piece—the moldboard, share, and land-side all cast together—with wooden handles and beam added.
<span>It created jobs for both the working and middle class, allowing a higher standard of living.</span>
Answer:
Four times
Explanation:
Metcalfe's law was developed by George Gilder and is credited to Robert Metcalfe, inventor of Ethernet (1980). It refers to the increase in the number of contacts and to the importance.
In spite of the fact that even the Internet, as we understand it today, was not present when the legislation was introduced, it talked more about the importance of computers in general. For eg, it would be pointless to own a mere fax machine. One may connect with another person if there are 2 fax machines, and since there are thousands, the computer has some meaning.
The answer to this question is D
