An Improved Adjustable Spanner.
Year: 1891

page_text: Date of Application, 31st Oct., 1891
Complete Specification Left, 24th Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Adjustable Spanner.
I, JOSEPH BENFIELD of Corporation Street West, Walsall, Staffordshire,
Shoeing Smith, do hereby declare the nature of this invention to be as
follows:-
This invention consists in the herein-described improved adjustable spanner
which is constructed as follows:-
One jaw of my said improved spanner and the stem or handle of the same are
cast stamped or otherwise formed together as is done in some other adjustable
spanners, the other jaw being threaded on to and moveable along the said stem or
In order to fix the
handle which is by preference made parallel to allow of this.
adjustable jaw on the stem or handle at any desired distance from the other jaw
which is formed with the stem or handle, 1 provide a binding screw which is carried
by the adjustable jaw and passes through the back or through one side of the same
and takes against the said stem or handle. A gib or other bearing piece of metal
carried by the adjustable jaw may be provided between the end of the binding
screw and the stem so as prevent the binding screw marking the stem.
Dated this 30th day of October 1891.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Adjustable Spanner.
I, JOSEPH BENFIELD, of Corporation Street West, Walsall, Staffordshire,
Shoeing Smith, 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 consists in the herein-described improved adjustable spanner which
is constructed as follows:-
One jaw of my said improved spanner and the stem or handle of the same are
cast stamped or otherwise formed together as is done in some other adjustable
spanners, the other jaw being threaded on to and moveable along the said stem or
handle which is by preference made parallel to allow of this. In order to fix the
adjustable jaw on the stem or handle at any desired distance from the other jaw
which is formed with the stem or handle, I provide a binding screw which is carried
by the adjustable jaw and passes through the back or through one side of the same
and takes against the said stem or handle. A gib or other bearing piece of metal
carried by the adjustable jaw may be provided between the end of the binding
screw and the stem so as to prevent the binding screw marking the stem.
In the accompanying drawings, in which the same letters of reference indicate
the same or corresponding parts in all the figures,
Fig. 1 represents in side elevation, an adjustable spanner constructed according
to this invention;
Fig. 2 is a sectional elevation and Fig. 3 is a back view of the same;
Fig. 4 shews the gib or bearing piece of the same;
Fig. 5 is a sectional elevation of my improved spanner when made without the
gib or bearing piece ;
Fig. 6 shews in elevation and Fig. 7 in sectional plan the said spanner with a
different form of gib or bearing piece;

page_text: Fig. 8 is an elevation and Fig. 9 is a sectional plan of a further modification and
Fig. 10 shews a further modification.
A is the jaw which is formed in a piece with the stem or handle B, and C is the
adjustable jaw which is threaded on to the stem or handle B and can be moved to
and fro along the same the latter being made parallel to allow of this and of
rectangular or of other cross section which will prevent the adjustable jaw C
turning thereon. D is the binding screw which, according to this invention, I
provide in the adjustable jaw C (and preferably at the back thereof as shewn. or
this screw may pass through one side of the jaw) to cramp the same in any desired
position on the stem or handle B. E is the gib or bearing piece (shewn separately
by Fig. 4) which may be provided between the end of the binding screw D and the
stem B so as to prevent the binding screw marking the stem; or as shewn by Fig. 5
this gib or bearing piece may be dispensed with. The meeting faces of the gib or
bearing piece E and of the back of the stem B may either be flat Figs. 1, 2, 3 and 4
or grooved as shewn in Figs. 6 and 7 or as shewn in Figs. 8 and 9 and these faces
may either be smooth Figs. 1, 2, 3 and 4 or milled as shewn by Fig. 10 so as to
afford a better grip to the bearing piece.
I wish it to be understood that I do not make any exclusive claim to the spanner
herein described and illustrated by the accompanying drawing if made without the
binding screw D arranged as and for the purpose set forth.
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 -
The improved adjustable spanner hereinbefore described and illustrated by the
accompanying drawings, that is to say, a spanner in which the adjustable jaw is
threaded on to the stem or handle B and is provided with a binding screw D applied
in the manner and for the purpose set forth and either with or without the gib or
bearing piece D for the purpose stated.
Dated this 23rd day of December 1891.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.