In 1808 he settled in Philadelphia, where he set up business as a seal and steel engraver and die-sinker.

Uses hand-gravers or die-sinker's chisels to cut designs or pictures into the metal surfaces of the gun, primarily the receiver.

The family prospered in Victoria; Ramsay's father, John, was a die-sinker and engraver in Scotland, but became a successful real estate broker in his adopted homeland.

Pinches was originally employed in father's business as a die-sinker, but, following an amateur interest in cuneiform inscriptions, joined the staff of the British Museum in 1878, working there as assistant then curator till retirement in 1900.

Linderman contacted C.W. Fremantle, Deputy Master of the Royal Mint in London, requesting him to "find a first class die-sinker who would be willing to take the position of Assistant Engraver at the Mint at Philadelphia."

Patterson wrote in August 1845 to Treasury Secretary Robert J. Walker that Longacre "is a gentleman of excellent character, highly regarded in this community, and has acquired some celebrity as an engraver of copper; but he is not a Die-Sinker.

In August, 1793, Joseph was designated as the Mint's "First Draughtsman & Diesinker."