Monkey Wrench Page: 3 of 3
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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When the latch27 is turned in the position
shown in Fig. 3, the jaw member 16 is held
from any but a very slight pivotal move-
ment. When, however, the jaw member 27
5 is turned outward to the position shown in
dotted lines in Fig. 1 it will be withdrawn
from beneath the angular end of the spring
and as a consequence the jaw member 16
may be turned upon its. pivot to the position
10 shown in Fig. 1, against the force however
of. the spring 22, which acts to normally
urge the jaw member 16 in the position
shown in Fig. 2, by engaging the upper
wall of the recess. It is to be understood
15 that the teeth on the latch 27 are not of such
length as will interfere with the moving of
the latch inward from the dotted line posi-
tion in Fig. 1 to the full line position shown
in Fig. 2, or moving this latch outward, and
20 that there is just enough engagement be-
tween the teeth and the end of the spring
22 as will suffice to engage the end of the
spring with the latch.
The operation of the invention is as fol-
25 lows: When the latch 27 is turned to the
position shown in Fig. 2 the wrench is
adapted for use with objects having flat
sides such as nuts the heads of bolts and
so forth. The jaw may be adjusted by sim-
30 ply pressing inward upon the pin 15 which
retracts the dog and the body 6 may then
be adjusted longitudinally upon the shank
2 to any desired position. As soon as the
pin 15 is released, the spring 12 will force
35 the dog back in engagement with the teeth
10 and lock the jaws in their adjusted posi-
tion.
When using the device as a pipe wrench
it will be obvious that when the wrench is
40 turned in one direction the jaws will clamp
the pipe, but that when turned in the other
direction the jaw members 16 will turn upon
its pivot to the position shown in dotted
lines, thereby releasing its grip upon the
45 pipe.
In order to permit the latch 27 to be with-
drawn from its engagement with the angu-
lar end of the spring 22, the latch is pro-
vided at its sides with scores or grooves
50 whereby the finger of the operator may
readily engage the latch. The latch is held
in frictional engagement with the side walls
of the opening leading to the recess 26 by
means of a. coil spring 30 .which surrounds
55 the pivot pin 28. and forces the latch into
frictional engagement with the side of the
casing formed by the hollow body 6.
Having thus described the invention
what is claimed is:
60 1. A wrench of the character described
including a shank having a fixed jaw on one
end, a member slidably mounted upon the
shank, means for adjusting said memberalong the shank, a jaw member pivoted to
the first named member and extending par- 65
allel to and behind the shank and having a
jaw coacting with the first named jaw, a
spring mounted upon the jaw member and
resiliently resisting a pivotal movement of
the pivoted jaw member outward and away 70
from the shank, and means for limiting the
pivotal movement of said jaw m ember, said
means being movable into or out of opera-
tive position.
2. A wrench of the character described, 75
including a shank having a fixed jaw on
one end, a member slidably mounted upon
the shank, means for adjusting said mem-
ber upon the shank, a. jaw member pivoted
to the first named member acnd having a jaw so
co-acting to the first named jaw, a spring
mounted upon the jaw member and extend-
ing into a recess on the first named member
and a latch movable into and out of en-
gagement with the spring to limit or permit 85
a pivotal movement of the jaw member.
3. A wrench of the character described
including a shank having a. fixed jaw on
one end, a member slidably mounted upon
the shank, means for adjusting said mem- 90
her upon the shank, a jaw member pivoted
to the sliding member and extending par-
allel to the shaft and having a jaw coacting
with the first named jaw, a spring mounted
upon the jaw member and extending par- 95
allel thereto, and a latch pivotally mounted
upon the slide and movable into position to
engage said spring and limit the pivotal
movement of the jaw outward from the
shank. 100
4. A monkey wrench of the character de-
scribed including a shank formed with a
head at one end having a serrated face, the
inner face of the shank having ratchet
teeth, a member slidably engaged with the 105
shank, a pawl pivotally mounted in said
member, a spring for forcing the pawl into
engagement with the latch teeth, a jaw
member pivotally mounted upon said first
named member and extending over the first 110
named head to form a movable head, the
inner face of said head and jaw member
having ratchet teeth inclined inward and
downward, . spring attached to the jaw
member and having an angular end project- 115
ing into a. recess in the first named member
and a. latch pivoted in the said recess and
adapted to be turned to engage the angular
end of the spring.
In testimony whereof I affix my signature 120
in presence of two witnesses.
JOSEPH MENSlK. [n. s.i
WXTitnesses:
Anois VAJA,
JOAN NowAK.Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,
Washington, D. C."2
1,114,170
l
1
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Reference the current page of this Patent.
Joseph Mensik. Monkey Wrench, patent, October 18, 1912; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth857910/m1/3/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.