Falls No.1, 3 & 5 eggbeater drills
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No.1 eggbeater drill;
Type 5 - The
type with the back-support wiper that supports the thrust between the
gear and drive pinion. Also the first No.1 type with a side handle. And
the 3-jaw, no-springs chuck patented on September 20, 1896.
this frame to that of Type 6, following. This method of
the heavier loads applied when turning the newly developed twist bits
imperfect - one would also have to adjust the spacing between the main
gear and the drive pinion, and there is no means to do this.
the missing adjustment, the back-support wiper cannot keep the two
in mesh on their pitch lines without tilting the main gear on its
shaft. Compare to the "little rail road car wheel"
(LRRCW) roller applied to the No.2 style drills developed at about the
same time by Millers Falls. Neither gear support method was ever
patented. Perhaps the claims of the patented outboard gear wiper
(US Patent No. 544,411, granted to H.D. Lanfair on August 13, 1895, and
assigned to Goodell-Pratt) precluded any such protection. The
wiper and the Lanfair patented wiper were eventually copied by several
manufacturers; the LRRCW was never imitated, even though it was the
gear-support method in both application and theory. The long side
handle with which this drill is equipped has only been seen in
non-Millers-Falls catalogs, such as that of Montgomery & Co.,