Wrench Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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1,167,275
forming to the configuration of the shank 1,
and the said jaw 6 is also provided at its
inner end with a cylindrical extension 18.
The adjusting nut 10 is equipped at its
5 inner portion with right and left hand
threads 19 and 20, and the cylindrical ex-
tensions of the sliding jaw and the sleeve
or casing have corresponding right and left
hand threads 21 and 22 which are engaged
10 by the threads of the adjusting nut. The
adjusting nut is adapted to be rotated to
produce a relative sliding movement of the
jaw 6 and the sleeve, and when the adjust-
ing nut is at the limit of its inward move-
15 ment, as shown in the drawing, it extends
between the outer operating portions of the
pawls or dogs, which are adapted to be
readily compressed to slide the sleeve or
casing and the movable jaw 6 along the
o shank to effect a preliminary adjustment of
the wrench, and the nut is in convenient
position to be immediately operated as soon
as the pawls or dogs are released, without
necessitating any material change in the
25 position of the nut. When pressure is ap-
plied to the nut in the final operation of the
wrench, the pawls or dogs are locked in en-
gagement with the shank, and it is impos-
sible for the same to accidentally move out
30 of such interlocked position.What is claimed is:
A wrench including a shank having a
fixed jaw, and provided at its opposite edges
with ratchet teeth having shoulders ar-
ranged at an inclination, a sliding jaw 35
mounted on the shank and provided at its
inner end with a cylindrical extension, a
sliding sleeve or casing also mounted on the
shank and provided at its outer end with a
cylindrical extension, spring actuated pawls 40
or dogs carried by the sleeve or casing and
provided with inner portions arranged to
engage the teeth of the shank, the outer por-
tions of the pawls or dogs being extended
beyond the sleeve or casing and arranged 45
in spaced relation with the cylindrical ex-
tension of the sleeve or casing, and an ad-
justing nut having right and left hand
screw threads and arranged on the said cy-
lindrical extensions, the latter being corre- 50
spondingly right and left hand threaded to
engage with the threads of the nut.
In testimony that I claim the foregoing
as my own, I have hereto affixed my signa-
ture in the presence of two witnesses.
IRA CUNNINGHAM.
Witnesses:
W. H. ROBERsoN,
A. L. TAYLOR.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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Reference the current page of this Patent.
Cunningham, Ira. Wrench, patent, January 4, 1916; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858968/m1/3/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.