In 1641, an Act was passed by the Parliament of Scotland to encourage the production of fine cloth, and in 1645 an amendment went through stating that the masters and workers of manufactories would be exempt from military service. As a result of this, more factories were established; these included the New Mills. This factory suffered during the Civil War with the loss of its cloth to General Monck. A new charter was drawn up in May 1681, and major capital invested in new machinery, but the New Mills had mixed fortunes, inevitably affected by the lack of protectionism for Scottish manufactured cloth. The "Scots Courant" reported in 1712 that New Mills was to be "rouped" (auctioned). The property was sold on 16 February 1713 and the machinery and plant on 20 March. The lands of New Mills were purchased by Colonel Francis Charteris and he changed their name to Amisfield.