Improvements in Spanners or Wrenches.
Year: 1899

page_text: Date of Application, 29th Apr., 1899-Accepted, 24th June, 1899
COMPLETE SPECIFICATION.
Improvements in Spanners or Wrenches.
I, CARL BECHER, of Hagen-Eckesey, in the Empire of Germany, Manufacturer,
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:―
The subject of the present invention is a spanner or wrench intended for
tightening up nuts of all sizes.
The annexed drawing illustrates the invention.
Fig. 1, is a view in elevation of the spanner or wrench.
Fig. 2, is a section following a plane ab on Fig. 1.
Fig. 3, is a longitudinal section of the spanner or wrench.
The spanner or wrench which forms the subject of the present invention com-
prises a jaw m² formed in one piece with a handle g. This handle has a rect-
angular hole formed longitudinally in it in which is capable of sliding an easy
fit a stem d of a rectangular section, terminated by a reduced part or portion e
screw threaded upon its narrow edges. The handle is perforated or cut away in
such a manner as to form a longitudinal aperture i, and is provided with a cut
away portion in which is located a milled nut f having internal screw-threads
corresponding to the external screw threads on the part e of the stem d which is
passed or threaded through it. The above mentioned stem is fixed at its upper
end to a second jaw m in the form of a hammer.
This latter jaw is provided with an extensions which has formed on it a rib
or feather j fitted to slide in a slot k made in the body of the spanner or wrench
and extending longitudinally (Fig. 1).
The tool is used in the following manner: -
The opening apart or the closing up together of the jaws in order to admit of
any particular nut being gripped, is effected by means of the operation of the
milled nut f, moreover, the upper jaw m is guided not only in the handle by the
stem and its end e, but furthermore upon the body of the wrench or spanner
by the extension s. The result of this arrangement is that, during the use of the
wrench or spanner, this extension bearing against the body of the said wrench
or spanner, transmits thereto all the strain applied to the upper jaw in the form
of pressure, by which means this jaw is entirely relieved thereof.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
A wrench or spanner intended for tightening up nuts of all sizes characterized
by a jaw formed in one piece with a handle, by a rectangular hole formed longi-
tudinally in this latter, by a stem having a rectangular section fitted to slide
easily in the said hole, this stem being terminated by a reduced part or portion
upon the small sides or faces of which is formed a screw-thread, by a milled nut
placed in a cut away portion of the handle and internally screw threaded to

page_text: correspond with the external screw threads upon the stem which passes or is
threaded through it, by a jaw fixed to the upper part and possessing an extension
which slides, whilst bearing or resting, during the use of the wrench or spanner,
upon the body of the said wrench or spanner through the medium of a rib or
feather provided on the said extension, and which slides in a corresponding
groove or key way formed longitudinally in the body of the wrench or spanner,
thus providing a second guide for the upper jaw, and transmitting to the body
of the wrench or spanner all the strain or stress received by the upper jaw during
work, substantially as hereinbefore described and illustrated in the annexed
drawing.
1000
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.