Improvement in Wrenches.
Year: 1899

page_text: Date of Application, 5th Oct., 1899
Complete Specification Left, 5th July, 1900-Accepted, 8th Sept., 1900
I, ALPHEUS AUGUSTUS PEART, of Deloraine, Tasmania, Australia, Surveyor,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an improvement in wrenches; the object of the
invention being to provide a wrench which can be more quickly manipulated
than the ordinary screw-wrench.
A wrench constructed in accordance with my improvement, consists of a shank
fitted with a suitable handle at one end, and a fixed head, of usual shape, at the
other end. A jaw is slidingly fitted over the shank, and adapted to hold a nut
between it and the head.
A lever is pivoted between ears in the movable jaw, and is formed with a cam
between the ears. The lever projects parallel with the handle and is adapted to
be grasped therewith.
When the movable jaw has been adjusted to the nut the lever and handle are
grasped and the cam binds upon the shank and prevents movement of the jaw.
The edge of the cam may be smooth, or ribbed transversely to increase its
friction on the shank. The cam may also be formed with teeth to engage teeth
on the edge of the shank.
COL1000
P. R. J. WILLIS,
Agent for Applicant.
Improvement in Wrenches.
I, ALPHEUS AUGUSTUS PEART, of Deloraine, Tasmania, Australia, Surveyor,
do hereby declare the nature of this invention, and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :—
This invention relates to nut wrenches and it has for its object the provision of
a wrench which will be of simple and cheap construction, and capable of being
more quickly adjusted to a nut than the ordinary screw-wrench.
Reference being has to the drawings hereunto annexed-
Figure 1 is a side view of the wrench. Fig. 2 is a bottom plan view thereof, and
Figs. 3 and 4 are detail views illustrating slight modifications of construction.
The wrench comprises a shank A formed with the usual head B, which con-
stitutes one of the jaws, and fitted with the handle C.

page_text: A jaw D conforming to the head B is slidably mounted on the shank A, and
has a rearward extension E formed with luge F.
An eccentric G is pivoted between the lugs F and has a rearwardly extending
handle H, preferably having its inner side made to conform to the contour of the
handle C.
When the handle H is raised, the jaw E can be moved on the shank A and
adjusted to a nut. The handles C, H, are then grasped simultaneously and pressed
together, which causes the eccentric G to impinge on the shank A and hold the
jaw D firmly in place.
In Fig. 3 the shank A and eccentric G are both shewn ribbed transversely.
In Fig. 4 the peripheral edge of the eccentric is shewn as ribbed transversely
so that it impinges more securely on the smooth edge of the shank A.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that
what I claim is:-
(1) In a nut wrench consisting of a shank formed with an integral jaw at one
end and a handle at the other end, the movable jaw reciprocable on the shank
and formed with lugs between which an eccentric having a rearwardly extend-
ing handle is pivoted, and adapted to impinge upon the shank, as, in the manner,
and for the purposes hereinbefore described, and shewn in the drawings here-
unto annexed.
(2) In a nut wrench, consisting of a shank formed with an integral jaw at one
end and a handle at the other end, the movable jaw reciprocable on the shank,
and formed with lugs between which an eccentric having a rearwardly extending
handle and a transversely ribbed periphery is pivoted, and adapted to impinge
upon the shank, as, in the manner, and for the purposes herein before described
and shewn in the drawings hereunto annexed.
(3) In a nut wrench consisting of a shank, formed with an integral jaw at one
end and a handle at the other end, the shank transversely ribbed on one edge,
the movable jaw reciprocable on the shank and formed with lugs between which
an eccentric having a rearwardly extending handle and a transversely ribbed
periphery is pivoted and adapted to impinge upon the shank, as, in the manner,
and for the purposes herein before described, and shewn in the drawings here-
unto annexed.
Dated this 4th day of July 1900.
P. R. J. WILLIS,
Agent for Applicant.