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Патент USA US2059087

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Patented Oct. 27, 1936
Carl Frederick Carlson, Peoria, 111.
Application July 25, 1935, Serial No. 33,165
1 Claim. (Cl. 81-176)
The object of the invention is to provide a
wrench in which the jaws are relatively movable
to provide for adjustment for various size nuts
and to accomplish such adjustment by the one
Cir hand in which the wrench is carried so that the
jaw setting operation may be readily accomplished
where the use of two hands is impossible or in
convenient; and to provide a wrench of the kind
indicated which is of simple form and susceptible
10 of cheap manufacture.
With this object in view, the invention con
sists in a construction and combination of parts,
of which a. preferred embodiment is illustrated
in the accompanying drawing, wherein:
Figure 1 is a side elevational view of a wrench
constructed in accordance with the invention.
Figure 2 is an edge elevational view.
Figure 3 is a sectional view on the plane in
dicated by the line 3--3 of Figure 2.
Figure 4 is a sectional view on the plane in
dicated by the line 4-4 of Figure 1.
While the invention is shown incorporated in
the conventional form of wrench in which the
stationary jaw I0 is integral with the combined
and handle l I, it is applicable to any other
form of wrench in which turning movement is
employed to adjust the movable jaw I2 toward
and away from the stationary jaw. In the illus
trated embodiment showing the conventional
30 form of wrench, the shank H is provided on the
one edge with the rack teeth M of the proper
inclination to be engaged with the thread of
the worm I5, the latter being disposed in an
opening in the jaw l2, so as to rotate freely there
35 in, and to this end being carried on a stem [6
arranged parallel with the shank II, the stem
extending through the jaw [2 on opposite sides
of the opening to provide journal portions for
the stem. The stem is substantially coextensive
in length with the combined shank and handle
portion l l and in the handle area passes through
a slide I‘! which is adapted for movement over
the shank ll throughout the handle area, which
is graduated in fractions of an inch as indicated
at [8.
The stem I6 is angularly but not axially mov
able with respect to the slide ll, said stem hav
ing a collar l9 abutting the slide on one end and
a ferruled portion 20 of a handle 2| abutting
the slideon the opposite end. The handle 2|
is of the general form of the conventional screw
driver handle and its diameter is greater than
the thickness of the shank II, so that it may be
readily grasped by the ?ngers of the hand in
which the handle portion of the shank II is
The scale [8 formed on the handle area of the
shank ll provides, in connection with the slide 15
ii, an indicator from which the spacing of the
jaws H and 12 may be determined.
The wrench when held in the hand may be
readily adjusted by manipulation of the ?ngers
on the handle 2|, so that in the event the user __
must employ one hand to hold the work being
operated upon, he may make the necessary jaw
adjustment readily with the other hand. ‘
The invention having been described, what is
claimed as new and useful is:
A wrench comprising ?xed and movable jaws,
a combined shank and handle member with which
the former jaw is ?xedly connected and on which
the latter is slidably mounted, a rotary member
carried by the movable jaw and having positive 30
operative connection with the shank to traverse
the latter and effect movement of the jaw along
the shank, a stem ?xed with respect to said
rotary member and paralleling the shank, and a
handle carried at the end of the stem adjacent
the handle area of the shank, the shank being
formed with a scale graduated in linear units
and having a slide mounted thereon movable
over the scale, the slide being operatively con
nected with the stem to permit relative angular 40
movement between it and the stem but to pre
clude relative axial movement between the two.
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