Industrial Biography--Iron Workers and Tool Makers

第36章

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第36章

Industrial Biography--Iron Workers and Tool Makers Samuel Smiles

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Industrial Biography--Iron Workers and Tool Makers
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  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。*

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