Improvements in Adjustable Spanners.
Year: 1896

page_text: Date of Application, 28th May, 1890
Complete Specification Left. 1st Mar.. 1897-Accepted. 3rd Apr.. 1897
Date of Application, 28th May, 1890
Complete Specification Left. 1st Mar.. 1897-Accepted. 3rd Apr.. 1897
PROVISIONAL SPECIFICATION.
Improvements in Adjustable Spanners.
I, JOHN ROBERT COOPER, of Aston Road, in the City of Birmingham, Edge
Tool Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to adjustable spanners and consists in the employment of
two longitudinal half parts, separated from each other and made to approach and
recede from one another by a swivelling screw pin and constrained to move parallel
by a square or like sectioned guide bar, fixed to the one part and moving through
a like sectioned hole in the other part.
The upper parts of the halves constitute parallel gripping jaws, whilst the lower
parts form the handle.
Thus, according to my improvements, I make up a spanner of two longitudinal
halves, stamped from sheet steel or otherwise, and with each half part having a
jaw or head at its upper end, the said jaws having V-shaped and coincident seatings
upon their presented faces suitable for embracing the angles of a nut, whilst the
lower ends of the said parts are formed into handles, having gap spanners at parts
suitable for taking upon the heads of small nuts.
These said sides are constrained to move in parallel directions by one of them
carrying near its upper end, a transversely directed and square guide bar which
passes through a like shaped hole in the opposite part of the other side or half,
whilst running preferably above and parallel to this guide bar is a screw pin,
with its inner end swivelling in the left hand side, and with the stem passing
through a screwed hole in the other half part and terminated in a turn, lever or
equivalent.
By rotating the turn of the screw in one direction, the jaws with their half
handles, are made to approach each other, with the one half moving upon the bar
carried by the other as a guide, whilst by rotating the screw in the other direction,
the jaws are opened out.
Dated this 27th day of Mar 1896.
JOHN ROBERT COOPER,
By Henry Skerrett,
Agent for Applicant.
I, JOHN ROBERT COOPER, of Aston Road, in the City of Birmingham, Edge
Tool 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 :—
This invention relates to adjustable spanners and consists in the employment of
two longitudinal half parts, separated from each other and made to approach and
recede from one another by a swivelling screw pin and constrained to move parallel
by a square or like sectioned guide bar, fixed to the one part and moving through
a like sectioned hole in the other part.

page_text: The upper parts of the halves constitute parallel gripping jaws, whilst the lower
parts form the handle.
Thus, according to my improvements, I make up a spanner of two longitudinal
halves, stamped from sheet steel or otherwise, and with each half part having a
jaw or head at its upper end, the said jaws having V or other shaped and coincident
seatings upon their presented faces suitable for embracing the angles of a nut,
whilst the lower ends of the said parts are formed into handles, having gap spanners
at parts suitable for taking upon the heads of small nuts.
These said sides are constrained to move in parallel directions by one of them
carrying near its upper end, a transversely directed and square guide bar which
passes through a like shaped hole in the opposite part of the other side or half,
whilst running preferably above and parallel to this guide bar is a screw pin,
with its inner end swivelling in the left hand side, and with the stem passing
through a screwed hole in the other half part and terminated in a turn, lever or
equivalent.
By rotating the turn of the screw in one direction, the jaws with their half
handles, are made to approach each other, with the one half moving upon the bar
carried by the other as a guide, whilst by rotating the screw in the other direction,
the jaws are opened out.
Figure 1 of the accompanying drawing represents, partly in elevation and partly
in section, an adjustable spanner constructed according to my invention.
Figure 2 is an elevation of the right hand side of the same.
Figure 3 is a vertical section upon the dotted line & Figure 1.
Figure 4 is a topside plan of Figure 1.
Figure 5 is a cross section upon the dotted line a¹, Figure 1, showing the
tronghed character of the halves.
Figure 6 is a complete vertical section of the two halves of the spanner.
Figure 7 is an elevation of the swivelling screw piu.
Figure 8 is an elevation of the square or angular sectioned guide bar.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a, a are the longitudinal halves of the spanner, each formed at the upper
end a², with a nut-gripping jaw a³, whilst the lower parts a', together, constitute
the handle, the lower extremities being gapped at a, a, to form spanners suitable
for small nuts.
6 is the angular-section guide bar by which the jaws and halves are constrained
to move parallel with one another, and which is secured by rivetting or otherwise
at 6 to the section a, and takes through a like sectioned hole a³, in the other
section a', whilst c is the traversing screw, swivelly connected to the section a,
and passing through a correspondingly wormed piercing a in the other section
and terminating in the turn piece c¹.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
An adjustable spanner consisting of two longitudinal halves or sections formed
with suitable gripping jaws, and made to approach and recede from one another
by a swivelling screw pin, the said sections being constrained to move in a parallel
direction by an angular or other suitable sectioned guide bar fixed to the one
section and directed through a corresponding shaped hole or gap in the other.
Dated this 27th day of February 1897.
JOHN ROBERT COOPER,
By Henry Skerrett,
24 Temple Row, Birmingham, Agent for Applicant..