Under-Drilling Bit. Page: 3 of 3
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1,067,416
pivotal leg and normally locking the legs
apart, its inner .end normally engaging the
fixed leg, said lever after it is tilted allow-
ing the legs to be moved toward each other,
5 as set forth.
2. An under drilling bit comprising two
legs, one stationary and the other pivoted
thereto, a spring holding the legs apart, the
pivotal leg having a slot therein, a lever ex-
o tending through the slot and pivoted to the
walls thereof, springs bearing against the
lever and the end walls of said slots and
tending to normally hold the lever so as to
lock the legs apart, the ends of the lever
15 projecting beyond the opposite edges of the
leg to which it is attached, the inner edge
of the fixed leg having notches in which
the inner end of the lever is adapted to
swing as the latter is tilted to allow the
20 legs to move toward each other, as set forth.
3. An under drilling bit comprising two
legs, one stationary and the other pivoted
thereto, a spring holding the legs apart, thepivotal leg having a slot therein, a lever
extending through the slot and pivoted to 25
the walls thereof, springs bearing against
the lever and the end walls of said slots
and tending to normally hold said lever so
as to lock the legs apart, the ends of the
lever projecting beyond the opposite edges 30
of the leg to which it is attached, the inner
edge of the fixed leg having notches in
which the inner end of the lever is adapted
to swing as the latter is tilted to allow the
legs to move toward each other, and a guid- 35
ing member attached to the pivotal leg and
engaging a slot in the fixed leg, as set forth.
In testimony whereof we hereunto affixed
our signatures in the presence of two wit-
nesses.
HARRY WHITE ENGLiSH.
MARCUS A. BYRON.
Witnesses:
J. P. HIvICK,
R. L. NEEDS.Copies of this patent may be obtained for five cents each, by addressing the " Commissioner of Patents,
Washington, D. C."$2
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English, Harry White. Under-Drilling Bit., patent, July 15, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth854000/m1/3/?rotate=270: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.