Wrench Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE.
ARTHUR G. HUNTER, OF DORCHESTER, TEXAS.
WRENCH.Specification of Letters Patent. Patented July 25, 1911.
Application filed October 15, 1910.- Serial No. 587,307.Tb all whom it may concern:
Be it known that I, ARTRURm G. HUNTER
a citizen of the United States, residing at
Dorchester, in the county of Grayson and
5 State of Texas,,.have invented new and use-
ful Improvements in Wrenches, of which
the following is a specification.
This invention relates to a wrench, and
more particularly to the class of adjustable
10 wrenches.
The primary object of the invention is the
provision of a wrench in which.the movable
jaw thereof may be accurately adjusted, so
as to rigidly clamp a nut or the like for the
15 turning thereof.
Another object of the invention is the pro-
vision of a wrench in which the movable jaw
may be rapidly and easily adjusted, whereby
to conform to the different sizes of nuts on
20 which the wrench is to be employed.
A further object of the invention is the
provision of a wrench in which the movable
jaw thereof is so mounted upon the shank
of said wrench, whereby it may be quickly
25 adjusted upon said shank and subsequently
the said movable jaw moved into close and
accurate position with respect to a nut for
gripping the same, whereby it may be turned
upon a bolt without any possibility of the
30 wrench becoming loose upon the nut.
A still further object of the invention is
the provision of a wrench which is cheap of
construction, :and thoroughly reliable and
efficient in operation.
35 With these and other objects in view, the
invention consists of the construction. com-
bination and arrangement of parts, as will
be more fully described hereinafter, illus-
trated in the accompanying drawings, and
40 pointed out in the claims hereunto appended.
In the drawings: Figure 1 is a side eleva-
tion of a wrench. constructed in accordance
with the invention. Fig. 2 is an edge eleva-
- tion thereof. Fig; 3 is a. detail perspective
45 view of the carriage and the gripping yoke.
Fig.. 4 is a detail ;perspective view of the
gripping yoke removed from the carriage.
Similar reference characters indicate cor-
responding parts throughout the several
50 views of the drawings.
Referring to the drawings by numerals, 2
designates the shank o.f the wrench, the same
being. preferably rectangular-shaped in cross
section and having at one end thereof a
55 rigid jaw 3 and at its opposite end a handle
4. In the rear edge of the shank 2 for aportion of its length is provided a rack
formed of a plurality of teeth 5 for a pur-
pose, as will be hereinafter more fully de-
scribed. 60
Mounted upon the shank 2 of the wrench
is a movable jaw 6, the same being of the
usual form and is provided in its front edge
with a notch 7, the latter beig intersected
by alining apertures 8, in which is mounted 65
an adjusting screw 9, the latter - having
threaded thereon a knurled head or disk 10,
the same being confined within the notch 7
in the movable jaw.
Slidably niounted upon the shank 2 is a 70
carriage comprising a' rectangular -shaped
sleeve 11, the same being formed in-opposite
side faces with guide grooves 12, while in
its rear face is provided an opening 13 and
engaged in the grooves 12 are the side arms 75
14 of a U-shaped laterally movable yoke 15,
the latter carrying a pivotal locking mem-
ber comprising a block.16 having at its inner
face a plurality of teeth 17, the same being
adapted to mesh with the teeth 5 formed on 80
the shank 2 of the wrench, the block 16 be-
ing connected between the arms 14 of the
yoke by means of a pivot. pin 18 passed
through the said arms and the block. This
block 16 works through the opening 13 in 85
the sleeve 11, whereby the teeth 17 of the
said block will mesh with the teeth 5 in the
shank of the wrench.
Formed on the sleeve 11 and extendlinir
forwardly therefrom is an extension 19, in 90
which is swiveled in any suitable ulaifler
the adjusting screw 9 mounted in the inov-
able jaw C of the wrench. The yoke .15 . is
formed with a finger lug 20, between which
latter and' the forward end. of the sleeve 1 95
is mounted a coiled expansion spring 21, the
latter serving to sustain the teeth 17 of the
block 16 in intermeshing engagement with
the teeth 5 in the shank, the sleeve 11 being
counter-bored to receive the spring, thus 100
forming a. seat. for one end thereof and to
prevent any possibility of the spring be-
coming accidentally detached from between
the carriage and the said yoke.
The operation of the wrench may be ex- 105
plained as follows: The primary adjustment
of the sliding jaw may be obtained by grip-
ping the carriage and sliding it toward the
rigid jaw upon the shank of the said wrench.
After the adjustment, if it be found that the 110
nut is not securely gripped, the secondary
adjustment may be resorted to, which is ob-999,167.
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Hunter, Arthur G. Wrench, patent, July 25, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509664/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.