Year: 1898

page_text: I, JOHN EDWARD EVANS-JACKSON, of Bristol House, 19-20,' Holborn Viaduct,
London, E.C., Engineer and Patent Agent, do hereby declare the nature of this
invention to be as follows:-
This invention relates to an improved spanner or wrench and has for its object
to construct a spanner or wrench which shall be readily adjusted to grip the nut
or tube which it is desired to manipulate and also to construct the said spanner in
such a manner that the action of 'pressing thereon when manipulating the nut or
'tube shall cause the jaws gripping the same to tighten thereon.
"In carrying the invention into effect I construct a handle of any suitable form
and cross section and of any suitable material having at its upper end and at
right angles to the line of the handle a serrated surface or jaw. At a suitable
distance below the said jaw is formed a radial slot or opening of sufficient size to
receive a milled nut which nut is formed at the top and bottom respectively con-
cave" and convex to agree with the lines of the slot aforesaid, which slot is of
sufficient length' to allow of a certain amount of sliding movement on the part of
the nut and in a direction' so as to cause the distance between the jaw and the nut
to be increased when such sliding movement takes place.
Passing through the nut is a screwed piece of metal which is attached, or formed
solid therewith, a second serrated jaw located above the first jaw. and having serra-
tions or teeth formed upon the under side thereof and by which sets of serrations
or teeth the tube or the like is held when the spanner or wrench is in use.
The spindle aforesaid has secured to it by rivets or equivalent means a lever
adapted to be seized by the 'hand when clasping the handle of the spanner and to
which is secured upon the inner side a spring, one end of which leans against the
handle of the spanner and the purpose of which is to keep the lever 'always pressed
out so that the screwed nut by which the adjustment of the jaws are effected is
always kept at that end of the radial opening in which it is nearest to the jaws so
that when the adjustment has been effected by turning the milled nut, the grasping
of the handle" and with it the lever will cause the nut to slide in the opening,
thereby tending to bring the jaws nearer one to the other and gripping the tube or
the like tightly whilst the pressure caused by turning the same is upon the handle.
Toted this 6th day of Auril 1898.
J. E EVANS-JACKSON & Co.,
Agents for the Applicant.

page_text: . An Improved Spanner or Wrench.
I, JOHN EDWARD EVANS-JACKSON, of Bristol House, 19-20, Holborn Viaduct,
London, E.C., Engineer and Patent Agent, do hereby declare the nature of this
invention (communicated to me by Richard Michael Carroll, of Merinda, Bowen, in
the Colony of Queensland) 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 an improved spanner or wrench and has for its object
to construct a spanner or wrench which shall be readily adjusted to grip the nut
which it is desired to manipulate and also to construct the said spanner in
such a manner that the action of pressing thereon when manipulating the. nut or
tube shall cause the jaws gripping the same to tighten thereon.
In order that the invention may be the better understood drawings are appended
in which;
Fig. 1 is a side view of a wrench constructed in accordance with the invention.
Fig. 2 is a front side view.
Fig. 3 is a plan of Fig. 1, looking upwards.
Fig. 4 is a section of the nut by which the jaws are adjusted.
Fig. 5 is a section of the screw upon which the nut shown in Fig. 4, acts.
In carrying the invention into effect I construct a handle A, of any suitable form,
and of any convenient cross section, the handle in the present instance consisting
of sheet metal bent or stamped until it is approximately U shaped in section as
shown in Fig. 3. The upper end of the handle is furnished with projections B,
between which is placed and secured thereto in any convenient manner, the hardened
serrated block C, forming the lower jaw of the wrench. The plate would also be
serrated to correspond with the block as shown in Fig 1. At a little distance
from the face of the jaw aforesaid I cut or otherwise form two radial openings D,
see Fig. 1, the edges E, F, of these openings forming parts of the circumference of
two concentric circles of varying diameters.
It will be seen on referring to the drawings that the openings D, are so arranged
with regard to the gripping surface of the lower jaw that the inner end thereof is
lower than the other. Within the slot D, is a nut G, which may be milled to
facilitate its manipulation and through which passes the screwed-shank H, of the
upper jaw I, which jaw may be formed solid with the shank as shown. The shank
H, is of such width as to lie between the turned sides of the handle as shown in
Figs. 1 and 2, and as aforesaid, has cut upon its edges the screw thread J, Figs. 1
and 5. At the end of the shank H, is attached, by screws or the like, a short
lever K, so arranged that when the handle is grasped, the said lever will be grasped
as well and the spring L, secured to the inside of the lever K, and bearing against
the plate forming the handle will act as a fulcrum causing the upper jaw to describe
an arc of a circle, thereby causing the upper jaw to be brought nearer to the lower.
The nut G, is preferably formed concave and convex at its upper. and lower ends
respectively so as to agree with the circumferences of the edges of the slot D, which
edges may also be chamfered off from the outside.
It will be seen from the foregoing that the adjustment of the jaws may be readily
effected by means of the nut 1 and any slackness existing between the said jaws
and the nut or pipe desired to be manipulated is taken up by the lever K, acting
as described and which lever also permits of the free escapement of the jaws when
it is desired to release them from the object gripped.
Instead of the jaws being serrated as shown, they may be left plain or have a
square cut therein to fit a square or hexagon nut.

page_text: 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 spanner or wrench a means whereby upon pulling the handle thereof the
jaws will tend to close upon the nut or pipe operated, substantially as herein
described and shown by the appended drawings.
2. The improved spanner, substantially as described and shown by the appended
drawings.
Dated this 23rd day of December 1898