Millers Falls No.1, 3 & 5 eggbeater drills
Type Study
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Millers Falls No.1 eggbeater drill; seventh example of Type 9,
the third one with a red main gear.

The no-springs three-jaw chuck no longer carries any patent information.  Instead, the crank is now stamped with the Star logo.
The model number "No1" is stamped on the straight-sided crank rather than on the outside of the spindle housing, which is no longer machined.
This example has a chipped tooth in the main gear; closer examination suggests that the gear was struck by something and not overloaded in normal use.
Millers Falls drill, No.1, Type 9, with Star Logo