machine machine device add lettering decoration edge coin lettering necessitated edge common problem resulting uneven irregular introduced france developed method marking edges lettering possible detect metal shaved edge method involved collar metal flowed pressure press technique slower costly later methods france abandoned favour england experimented briefly wasn brought method coins mid seventeenth century began earnest country invented different method marking edge according faster costly method pioneered exact method secretive asserted likely resembled later device invented machine marked edges means steel rulers blank forced legends designs edge device found favour france eventually adopted nations including britain united_states eventually phased techniques background prior introduction resulted relatively crude product irregular shape size european named created new technique striking coins included use rolling mills presses cut press learning invention french ambassador king henry_ii dispatched master mint observe machinery press turned weighted wooden handle exerted pressure blank creating precise strike requested send engineer capable creating similar machine sent engineer viewed machine introduced version france later added collar allowed expanding metal fill collar creating designs edge lettering time reverse images struck coin segments collar removed coin ejected lettering aid detecting coins metal edges problem frequently encountered method striking coins considered costly relative previously utilised method upper die came contact collar downward descent causing expensive damage abandoned favour introduced england production ceased august house_of_commons opted summon engineer london operations tower mint mint officials opposed techniques subjected series trials quality product compared mint according pamphlet published process described new invention handsome shall stamped flat sides shall marked letters thickness intended prevent described proposition presumably meant different ways pieces marked edge men according man mint selected create competition mint pieces way tedious time stamps engines money referring type collar added early presses time consuming use caused significant damage dies engines went touching new way ready based money inventor know experiences pleasure state argued methods prevent machinery required complex criminals following swearing lord protector proponent method find favour nation establishment government placed charge planned mint ireland heavily fraudulent means proposed mint came existence given official appointment strike worth coins bearing portrait captured spanish silver superintendent believed edge lettering created means steel strip coin metal flowed striking creating raised designs wording suggested technique costly older method involving split collar steel strip replaced economically determined era struck collar suggests machine edge lettering prior striking returned france following death summoned return london following order king charles_ii operations mint received contract mint fulfilled death work engineer tools conduct edge lettering process diary member parliament samuel remarked secrecy maintained process stating mint mark letters edges kept great secret invention production ceased france edge lettering wasn immediately reintroduced nation point prior french engineer invented machine apply edge lettering coins approached french government proposal use machine nation king favoured invention financial minister believed economically viable pay expenses required use objection entered contract nation gold silver include edge lettering created machine years later response raise money support years war proposed method existing coins ultimately accepted edge lettering machine coins supervisor individual undertook process pay use dismissed found stolen mint reformation appointed perform edge lettering place second reform took place imprisoned charges inaccurate scales weigh coins according wife née allegations false originating opponents lost money result machine introduction resulting monetary reforms according engineer machine likely similar england improvements machine worthy called invention operation account described operation machine machine purpose consists plates steel form rulers engraved half half plates strongly bound screws copper plate board table copper plate means handle wheel iron teeth catch teeth surface sliding plate placed horizontally plates carried motion time half turn found marked round according entry machine capable applying edge lettering coins daily machine came use world way improve existing machinery edge lettering copy machine use director newly established philadelphia ordered presses england added modified version machine obsolete following introduction steam powered equipment mint machine replaced paris mint mint engineers created version
Castaing machine