Falls No.1, 3 & 5 eggbeater drills
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No.1 eggbeater drill; second example of Type 7B;
Differs from Type
7A in the absence of a patent date on the no-springs, 3-jaw chuck.
The main handle's skirt has a sharp-cornered flare like the Type 7A. The
spindle housing is machined and stamped, "NO 1." The crank has been neatly
replaced with one made from a beer-can opener.