. During Eckfeldt's childhood, the
thirteen British colonies along the Atlantic coast of what is now the United States revolted, and so the
United States of America secured its independence. After the
United States Constitution was ratified, Congress and many government offices came to be housed in Philadelphia, including the newborn
Mint of the United States. Adam Eckfeldt built the first
screw press for the new facility in 1792, the same year that the
Mint Act of 1792 was passed by Congress authorizing a mint, and cut the obverse die for the experimental
Birch cent of that year. He also built other machinery for the Mint, and helped superintend the early coining. In 1792, the Mint acquired three balances from Eckfeldt, who also lent the Mint his
lathe (used for turning dies). Eckfeldt is believed to have made the die from which the
1792 half disme, considered by some the first official U.S. coin, was struck—in 1829, a visitor to the Mint met Eckfeldt and later described him as "an artist [who] made the first die used in it". Other later accounts document Eckfeldt's role in this striking: an 1863 auction sold a half disme supposedly given by Eckfeldt to demonstrate his work. Eckfeldt is given as the source for the tradition that the half dismes were struck at the request of President
George Washington to be used as presents. Eckfeldt operated his screw press to strike these roughly 1,500 pieces on July 13, 1792. Since the first Philadelphia Mint was still under construction at the time, these coins were produced in the cellar of John Harper, saw maker, at Sixth and Cherry Streets in Philadelphia. In his
annual message to Congress late that year, Washington noted the ongoing construction of a mint building and stated: "There has also been a small beginning in the coinage of half dismes, the want of small coins in circulation calling the first attention to them." Eckfeldt also produced
a pattern disme, of which only a few were struck. When the Mint's first cents (produced in 1793) were found to be excessively crude and attracted public ridicule, Eckfeldt was called upon to design replacements. He placed
a wreath on the back of the cent instead of
the original chain, and placed a
trefoil under
Liberty's head on the obverse. He also engraved the first
half cent dies later the same year. Eckfeldt continued to work intermittently for the Philadelphia Mint; in 1793, he built a device for automatically feeding planchets into the die collar and ejecting the struck coins, and the mint's records reveal that he did
piecework there in July 1795. By October 1795 he was on the mint's payroll, as a
die forger and
turner, at a salary of $500 per year. On January 1, 1796, Mint Director
Elias Boudinot appointed him as assistant coiner, with the consent of President Washington. His duties in that capacity were broad. In 1805, at Boudinot's request, Eckfeldt eliminated a security problem for the Mint by renting two houses adjacent to its operations, allowing it to shut an internal alley to public access. The following year, new Mint Director
Robert Patterson requested a pay increase of $200 for Eckfeldt, writing to President
Thomas Jefferson that Eckfeldt had "the management of the whole coining department". When the dies used proved too brittle and cracked easily, Eckfeldt came up with the idea of spraying water on the face of the die so the steel would temper evenly. As a boy, inventor
George Escol Sellers knew Eckfeldt; as Sellers's father was partner in a firm which sold machinery to the Mint Bureau, Eckfeldt often dined at his house. In the final years both of the 19th century and of Sellers's life, he published his memoirs, including memories of the first Philadelphia Mint. He recalled in 1812 peering through a window to see cents coined, and Eckfeldt coming into the room to stop the work at the end of the day. Seeing the young Sellers, he had the boy come in, had him place a cent planchet on the press, and struck it for him. Sellers nearly dropped it because it was so hot, and Eckfeldt reminded him it had been cold when placed in the press. Eckfeldt bade him keep the coin until he learned why the cent had become hot, and then he could spend it on candy. == Chief coiner ==