Falls No.1, 3 & 5 eggbeater drills
to Main Page
No.1 eggbeater drill.
Type 3 - modified
to show off the Jacobs chuck, patented in 1902.
Note the cross-drilled
hole in the spindle used to help the installer of the Jacobs chuck, which
is not rotated on the spindle in normal use - one tightens it with the
key shown stowed in the chuck.