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Патент USA US2407548

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h i Sept.' 10, 1946.
'
R. E. GEA‘RHART'
`2,407,547
WRENCH
Filed ` sept. 16, 1945
BY @/MZ
Patented Sept. 10, 1946
2,407,547
UNITED STATES PATENT OFFICE
2,407,547
WRENCH
Roy E. Gearhart, Kansas City, Mo., assigner of
three-tenths to Byram L. McCreary and three
tenths to Richard B. McCreary, both of Kansas
city, Mq.
Application September 16, 1943, Serial No. 502,693
1 Claim.
(Cl. 81-89)
1
rl‘his invention relates to improvements in a
wrench and refers more specifically to a wrench
wherein the jaws are constantly urged toward
each other during the nut tightening and releas
ing operation.
'
are always maintained in parallel relation re
gardless of their distance apart. A tongue 34
formed in the wall of head 20 is slidably mount
ed in groove 36 formed in the wall of jaw body
30 to secure the parts in proper alignment. A
The principal object of this invention is the
provision of a wrench having a two piece slidable
slide bar 33 having ratchet teeth 40 is slidably
mounted in head 23 to operatively engage the
jaw operatively adjustable to fit various sizes of
ratchet teeth 42 formed in body 39 of the slid
nuts and having means to force the jaws toward
able jaw.
each other as the Wrench is operated to set or re 10
The lever 44 pivoted in the head 20 by pin 46
lease a nut.
has a tooth bar 38 so that as said lever is oscil
Another object of the present invention is the
provision 0f a sliding jaw wrench having a two
piece slidable jaw member said pieces being
adapted to be relatively adjusted to set the jaws
to accommodate nuts of different sizes and also
having a lever` whereby said slidable jaw mem
lated relativeto head 20 the bar will be moved
transversely of head 2U.
Referring to Figures 1 and 5 it will be noted
that the ratchet teeth are so positioned relative
to the parts that the teeth will rigidly engage
when the slidable jaw is moved toward the ñxed
ber is moved toward or from a stationary jaw.
.law so as to exert a pressure against the nut be
A further object of this invention is the provi
ing operated on. It will be noted that the re
sion of a wrench wherein the force required to 20 duced end 52 of slide bar 38 rests against the rel
loosenl or set a nut is in direct proportion to the
atively short ledge 54 of the head and that the
force tending to move the jaws of the wrench
other end 56 extends beyond the head and is pro
toward each other.
vided with a roughened inclined surface 58 suit
A still further object is the provision of a slid
able for engagement by the operator’s thumb to
ing jaw wrench adapted for use in releasing and
move this end of the bar away from jaw body 30,
setting nuts 0f various sizes and also for use as
against the action of spring 6I) disposed in recess.
a pair of pliers.
62 between bar 38 and the lug 64 at the side of le
Other objects are simplicity and economy of
ver 44. When so forced outwardly the teeth in
constr-uction, ease and efficiency of operation,
bar 38 will disengage the ratchet 42 on the slid
and adaptability for general use where it is de 30 able jaw member so that the slidable jaw mem
sired to prevent scuiiing or disi'lguring of the nuts
ber may be adjusted relative to the ñxed jaw.
being operated on.
Reference will now be had to the drawing
wherein,
Fig. 1 is an elevational View partly broken away
with parts shown in the closed position in dotted
lines, embodying this invention.
Fig. 2 is an edge view of the wrench shown in
Fig. 1.
Fig. 3 is a sectional View taken on line III
The spring 66 is` sufliciently strong to normally
secure the bar and movable jaw in fixed relation,
however, when the jaws are opened too Wide for
, the nut, the operator may easily force the jaws
together to ñt the nut without moving the lever
t4. If desired, the jaws may be moved to con
tact each other.
A handle 66 integral with head 20 serves as a
40 hand fulcrum to force the jaws to the closed po
III of Fig. 1.
sition, especially when the wrench is used as pli
Fig. 4 is an end View of the wrench partly
ers to grip an object.
broken away.
A plunger 68 slidably mounted in a hole 'l0
Fig. 5 is a perspective view of the slide bar.
formed in head 20 is urged outwardly by spring
Fig. 6 is a perspective view of a movable jaw. 45 'l2 against lever ‘i4 so as -to normally hold the
Throughout the several views like reference
lever and handle apart. Spring 60 also functions
characters refer to similar parts and the numeral
in like manner to hold these members apart, but
2D designates a head having a fixed jaw 22, and
is weaker than spring 12, thus securing the lever
being provided with a transverse slot 24 which
against oscillation when the sliding jaw is being
serves to receive the movable parts. Mounted in 50 ratcheted to position.
head 2t] is a slidable jaw member 26 having a
>To set this wrench for use .the operator en
jaw 28, complimenting ñxed jaw 22 and a re
gages the roughened end 58 of bar 38 and forces
duced transversely disposed body 3i) which is
the bar against the action of spring 60 to cause
mounted in the slot 24 to move at right angles to
a- separation of ratchet teeth 40 and 42 so that
the gripping faces 32 of the jaw so that the jaws 55 the operator may move the slidable jaw to the
2,407,547
3
open position. The jaws are now set about a
nut and the jaw 2B is moved forwardly until it
contacts the wall of the nut. The ratchet teeth
will automatically secure the jaw member 26
against outward movement. With the nut thus
Y
What I claim is:
4
.
A wrench comprising al head member having a
fixed jaw; an angled jaw member slidably'car
ried by said head member, and having a jaw
complementing said fixed jaw; teeth formed
along the inner longitudinal edge of said jaw
positioned between the jaws the operator forces
member; a bar having teeth adapted to opera
the lever in the direction indicated by the arrow
tively engage the teeth of said jaw member; a
(see Fig. l). The greater the force applied to
handle member pivotally carried by said head
the lever 44, the tighter the jaws will clamp the
-10 member and operatively connected with said bar
nut.
and having a side lug adjacent said pivot where
From the above description it is quite apparent
by when said handle is oscillated relative to said
that this wrench is adapted for adjustment to
head member said jaw member will be recipro
ñt Various sized nuts and has a jaw movement
that insures a clamping action against the oppo
cated in said head member; and resilient means
site walls of the nut, proportionate to the force 15 positioned between said lug of said pivoted han
dle and said bar whereby said bar is constantly
Iurged against said angled jaw member as said
It is quite apparent that many minor changes
pivotal handle is urged outwardly to open said
might be made in the structure of theparts and
,wrench jaws.
also in their relative arrangement without> de
ROY E. GEARHART.
parting from the spirit of this invention.
20
required to release or set the nut.
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