English and American Tool Builders

accuracy American Armory Arms became began blocks boring brass Brown building built called Cleveland Company contract cotton cutting cylinder developed drill early employed engine England established Facing factory feet Field FIGURE firm gauges gave gear give given Government hammer hand Hartford Henry important improvements inches industry influence interchangeable interest introduced invented iron James John Joseph known later lathe London machine tools machinery maker manufacture Maudslay means mechanics ment methods mill moved Nasmyth never North operated original patent planer plant practice Pratt present principle production Providence result returned rifle says screw Sellers Sharpe shown skill sold soon standard started steam engine success superintendent textile thread tion took tool builders turned turret United various wheels Whitney Whitworth Windsor workmen York