Wrench. Page: 2 of 2
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UNITED STATES PATENT OFFICE.
DUNCAN WEIR, OF MARSHALL; TEXAS.
WRENCH.
SPECIFICATION forming part of Letters Patent No. 232,581, dated September 21, 1880.
Application filed July 2, 1880. (Model.)To all whom it may concern:
Be it known that I, I)UNCAN WEIr of Ifar-
shall, in the county of Harrison and State of
Texas. have invented certain new and useful
5 Improvements in Wrenches; and I do hereby
declare that the following is a full, clear, and
exact description of the invention, which will
enable others skilled in the art to which it ap-
pertains to make and use the same, reference
1o being had to the accompanying drawings,
which form a part of this specification, in
which-
Figure 1 is a side view of my improved
wrench, partly broken away to expose the act-
I5 eating cud of the lever on the sliding jaw.
Fig. 2 is a longitudinal section. Fig. 3 is a
transverse section, on an enlarged scale,
through line x, Fig.2. Fig.4is afront view,
and Fig. 5 is a cross-section through line y y,
2c Fig. 1.
Similar letters of reference indicate corre-
sponding parts in all the figures.
This invention contemplates improvements
in wrenches especially adapted for manipulat-
25 ing pipe-joints, though applicable, also, for use
in manipulating nuts, &c.; and it consists in
the detailed construction and combination of
operating parts, as hereinafter more fully de-
scribed, and particularly pointed out in the
30 claim.
In the accompanying drawings, A marks a
vertically-movable jaw, with a screw-threaded
shank,a, inserted through two perforated studs
or arms, a', upon the rear side of a slotted box
35 or casting, B, and through a milled nut or
burr, C, with its thread engaging the thread
of the jaw-shank. The rotation of this nut
effects the vertical adjustment of the jaw, so
as to bring it in contact with the surface of
40 the pipe or other surface or nut tobe operated
or turned. This jaw extends out at a right
angle to its shank, as shown.
A' is the sliding jaw, with an inclined face,
anid forming, with the face of the jaw A, awedge-shaped space between them, as seen 45
in Fig. 1, while it is grooved and formed on
each side with a web or flange, b, coinciding,
respectively, with flanges and grooves in the
upper recessed end of the box or casting B,
for the jaw to slide therein. The under side 50
of this jaw is cogged, or provided with teeth
o. to permit of its engagement with and its
operation by the handle or lever D, pivoted
in the plate or casting B atf, and with its up-
per end provided with corresponding cogs or 55
teeth d. Each of the jaws A A' is provided
with a serrated or roughened face, to enable
them to firmly grasp the pipe or other surface.
By grasping the lever and adjusting the jaw
A by its nut to one side of the pipe or other 6o
surface to be grasped, the jaw A' being ad-
justed to the opposite side of the pipe or sur-
face, and then moving the lever outwardly,
which will move the sliding jaw A' inwardly, .
the jaws will firmly gripe the pipe or nut, while 65
by removing pressure from the handle or le-
ver the jaws will immediately release their
hold.
Having thus fully described my'invention,
I claim and desire to secure by Letters Pat- 70
ent of the United States-
The wrench composed of the handleD, hav-
ing cogs d at its upper end, grooved and slotted
box B, having perforated studs a' a', adjusts-
ble jaw A, having threaded shank a and burr 75
or nut C, and wedge-shaped sliding jaw A',
having side flauges, b b, and cogs or teeth c,
all constructed and combined substantially as
and for the purpose herein shown and speci-
fed. 80
In testimony that I claim the foregoing as
my own I have hereunto affixed my signature
in presence of two witnesses.
DUNCAN WEIR.
Witnesses:
F. N. NoRirAN,
J. V. BEER.
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Weir, Duncan. Wrench., patent, September 21, 1880; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth170044/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.