Millers Falls No.1, 3 & 5 eggbeater drills
Type Study
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Millers Falls No.5 eggbeater drill; 
Type 4B - The frame design has been found published only in a Montgomery & Co. hardware catalog; this model has a wide-rimmed main gear that can easily be grasped with thumb & forefinger for sensitive drilling.  The frame is typical of the earliest No.1 types, but the tapered crank is let into the rim of the main gear for security.  The main handle has been lengthened for the longer, spiral-fluted twist drills.  The chuck is the no-springs, 3-jaw type, marked with its patent date of September 29, 1896, and the Millers Falls name and location in Millers Falls, Massachusetts.  The reeding indicates that this chuck was made shortly after the issuance of the patent.  Later chucks of this design have diamond knurling.
Millers Falls No.5 Type 4A drill