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2. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   Drill chucks mounted by Jacobs tapers onto arbors with Morse tapers for the spindle. Spindle nose on a lathe headstock. The small female taper is a Morse taper to take a lathe center or a tool such as a twist drill. The large male taper takes a lathe chuck, which is retained by the large nut.

3. Chuck (engineering) - Wikipedia

   en.wikipedia.org/wiki/Chuck_(engineering)

   A pin chuck is a specialized chuck designed to hold small drills (less than 1 mm (0.039 in) in diameter) that could not be held securely in a normal drill chuck. The drill is inserted into the pin chuck and tightened; the pin chuck has a shaft which is then inserted into the larger drill chuck to hold the drill securely. Pin chucks are also ...

4. The Churchill Machine Tool Company - Wikipedia

   en.wikipedia.org/wiki/The_Churchill_Machine_Tool...

   Improvements in lathe chucks: James Buckingham: Charles Churchill: 28 Oct 1868 [14] 2899 [15] 6 Nov 1866: An improved chuck for holding drills and other tools: Charles Churchill: Albert Beach: 3696 [16] 27 Dec 1867: An improved gas-burner: Charles Churchill: Willis Churchill: 3173 [17] 15 Oct 1868: Improvements in sporting breech-loading fire ...

5. Bridgeport (machine tool brand) - Wikipedia

   en.wikipedia.org/wiki/Bridgeport_(machine_tool...

   Both Morse and R8 allowed for both collets and solid holders, and a drill chuck could be held by either of the latter. Currently R8 and Erickson #30 Quick Change tool holders are available. Machine slides are of the dovetail type, and rotary bearings are mostly of the roller and ball types.

6. Collet - Wikipedia

   en.wikipedia.org/wiki/Collet

   The most popular size is 8 mm which came in several variations but all 8 mm collets are interchangeable. Lorch, a German Lathe maker, started with 6 mm collets and the first Boleys used a 6.5 mm collet. 6 mm collets will fit into a 6.5 mm lathe but it is a poor practice. Another popular size is the 10 mm collet used by Clement and Levin.

7. Lathe - Wikipedia

   en.wikipedia.org/wiki/Lathe

   Modern metal lathe A watchmaker using a lathe to prepare a component cut from copper for a watch. A lathe (/ l eɪ ð /) is a machine tool that rotates a workpiece about an axis of rotation to perform various operations such as cutting, sanding, knurling, drilling, deformation, facing, threading and turning, with tools that are applied to the workpiece to create an object with symmetry about ...