Plumier,Bergeron,andmanyotherwriters。
TheworkofPlumierisespeciallyelaborate,enteringintotheconstructionofthelatheinitsvariousparts,themakingofthetoolsandcutters,andthedifferentmotionstobegiventothemachinebymeansofwheels,eccentrics,andotherexpedients,amongstwhichmaybementionedoneverymuchresemblingthesliderestandplaning-machinecombined。*
[footnote……
Itconsistedoftwoparallelbarsofwoodorironconnectedtogetheratbothextremitiesbyboltsorkeysofsufficientwidthtoadmitofthearticlerequiredtobeplaned。Amoveableframewasplacedbetweenthetwobars,motionbeinggiventoitbyalongcylindricalthreadactingonanytoolputintotheslidingframe,and,consequently,causingthescrew,bymeansofahandleateachendofit,topushordrawthepointorcutting-edgeofthetooleitherway——Mr。GeorgeRennie’sPrefacetoBuchanan’sPracticalEssaysonMillWork,3rdEd。xli。
FromthisworkitappearsthatturninghadlongbeenafavouritepursuitinFrancewithamateursofallranks,whosparednoexpenseinthecontrivanceandperfectionofelaboratemachineryfortheproductionofcomplexfigures。*