methods were first used in around 1500. When the mint in Christiania (Oslo)
was founded in 1628, coins were struck manually. In 1682, Mint-master
Peter Grüner applied to the king for funds to purchase a roller press.
Records state that a roller press was in use at the Christiania mint workshop
in 1685. When minting started at Kongsberg in 1686, brand new coin presses
were purchased from Germany. Of the 76 twelve-skilling dies made by engraver
Olav Vif in the first six months of 1724, 60 dies were used in the "striker"
and 16 in the "press". Apparently, when Mint-master Hans Iacob Arnold Branth
handed over the reins of the Kongsberg Mint to Johan Georg Madelung in
1797, he could offer his successor five striking machines, five presses
and four roller presses.
Striking coins with a klipswerk press was a slightly mechanised manual process. The upper die was attached to a frame aligned so it would hit the blank squarely. The "press" was what was commonly referred to as the screw press. In this coin press the upper die was fastened to a vertical moveable screw. A long, two-armed bar with a heavy ball at each end was attached to the upper end of the screw. During coining, the upper die was screwed down towards the bland by two or more workers setting the bar in motion.
The roller press had two rolls with several coin dies on each roll. Strips of coin metal, hammered to suitable thickness, were fed between the rolls. The coins were subsequently punched out in a separate machine. Coining in the roller press was a relatively fast procedure, but it was frequently less precise and more costly than the coining in machines based on hammering, or striking.