Improvement in Post-Hole Diggers Page: 2 of 2
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UNITED STATES PATENT OFFICE.
JOHN J. ARMSTRONG, OF TEXANA, TEXAS.
IMPROVEMENT IN POST-HOLE DIGGERS.
Specification forming part of Letters Patent No. 197,808, dated November 20, 1877; application filed
June 4, 1877.To all whom it may concern:
Be it known that I, JOHN J. ARISTRONG,
of Texana, in the county of Jackson and State
of Texas, have invented certain new and use-
ful Improvements in Post- Hole Diggers;
and I do hereby declare that the following is
a full, clear, and exact description thereof,
which will enable others skilled in the art to
which it appertains to make and use the same,
reference being had to the accompanying
drawings, which form a part of this specifica-
tion, and in which-
Figure 1 is a side elevation, showing my
improved post-hole digger closed; and Fig. 2,
a similar view, showing it open.
Similar letters of reference indicate corre-
sponding parts in both the figures.
My invention relates to post-hole borers or
diggers; and it consists in an improved con-
struction of implements of this class, substan-
tially as hereinafter more fully described, and
pointed out in the claim.
In the drawing, A A' are the two parts of
the operating rod or handle, which are pivoted
together at a. Rod A has a slot, b, about
midway, and rod A' has a pivoted catch-lug,
c, which fits into the slot b, and also a bail or
keeper, d, hinged to its top, which fits over the
top of the opposite rod A, so as to secure the
two in place when folded together for digging
the hole, as shown in Fig. 1.
The drill or auger B is made in two pieces,
d' and d", each semi-cylindrical in shape, so
that the two, when brought together, will
form a complete cylinder. When these parts
and the operating-rods A A' are in the closed
position represented in Fig. 1, the digger is
ready for boring the hole. After one round or
depth has been reached, by striking or ram-
ming the implement into the ground, (the earthbeing retained between the jaws d' d",) it is,
when the jaws are full, withdrawn from the
hole thus made, and the dirt contained be-
tween the cutter -jaws removed by opening
them out from each other, when it will drop
out. The digger is then again folded and re-
inserted into the hole, when the operation of
ramming it down is repeated. When the cyl-
inder formed by the cutters has been charged
with dirt, it is withdrawn and emptied a sec-
ond time, and so on until a hole of the desired
depth has been obtained.
I am aware that the several parts forming
my invention-the pivoted handles, the loop
d, and the catch c-are not new, separately
considered; but by combining them in the
manner described a tool is formed which pos-
sesses the qualities of strength, lightness, du-
rability, and convenience for handling in a
pre-eminent degree. Therefore,
Having thus described my improvement, I
claim and desire to secure by Letters Patent
of the United States-
The improved post-hole digger herein de-
scribed, consisting of the arms A A' the for-
mer having slot b, pivoted at a, and lying,
when closed, close together from their pivot-
ing-point upward, the said arms being semi-
circular in their horizontal cross-section, bail
or loop d, catch-lug c, and semi-cylindrical
augers or cutters d' d", all combined, ar-
ranged, and operating substantially in the
manner herein shown, for the purpose set forth.
In testimony that I claim the foregoing as
my own I have hereto affixed my signature in
presence of two witnesses.
JOHN JOSHUA ARMSTRONG.
Witnesses :
W. Woon,
WILLIE A. MATTHEWS.
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Armstrong, John J. Improvement in Post-Hole Diggers, patent, November 20, 1877; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth166719/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.