Improvements in or relating to Adjustable Spanners.
Year: 1894

page_text: Date of Application, 3rd Nov., 1894-Accepted, 2nd Mar., 1895
COMPLETE SPECIFICATION.
Improvements in or relating to Adjustable Spanners.
We, JOHN WINKLESS, Senior, of 9 Fair View, Grant Street, Edgbaston,
Birmingham, Mechanical Engineer, and WILLIAM JETHRO STURGESS, of
136 Corporation Street, Birmingham, General Agent, do hereby declare the nature
of our said invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
Our invention relates to improvements in adjustable spanners of the kind
commercially known as "double jawed" that is having a jaw at each end.
The constituent parts are two longitudinal moveable and adjustable halves or
sides by which the jaws may be opened or closed so as to accommodate to the size
or shape of nut or pin. These two halves or sides have a sliding movement and in
practice are inseparable from each other..
We will describe our invention thus ;-
We construct the spanner according to our invention of two longitudinal parts
or halves which engage upou and with each other, each half is provided at each
end with a section or half of the jaw and each half is provided with a guide into
which the corresponding half fits, and slides; when in positiou, a fixing plate is
employed at or upon each end by means of screws, and thus the double jawed
spanner is formed. One part or half has measurement indicated thereon.
Upon the edge of each part or half is a lug, at a distance apart from each other
sufficient to admit of a screw which is endless, the one end of the said screw passing
through one lug, and closed over while the other end passes through the other lug;
upon the end of the screw is a head the edge of which is milled to engage the
fingers, as by this means the head is moved and the two parts actuated, that is
brought together or separated according to its purpose.
To facilitate the opening of the jaws we employ a helical spring fed upon the
screw, which bears against each lug.
And in order that this our said invention may be more clearly understood, we
shall now refer more particularly to the sheet of drawings hereunto annexed, to the
figures and letters thereon the same letters of reference indicating corresponding
parts throughout all the figures.
Fig. 1 and Fig. 2 represent the two longitudinal sides or halves detached for
forming our adjustable spanner.
Fig. 3 represents a view in its entirety of an adjustable spanner constructed and
arranged according to our 'invention.
Fig. 4 represents a side view of same in section (through centre).
The two longitudinal sides or halves a and b, are constructed respectively with
the parts c and d and e and f, to form when together the jaws, a and b move in the
guides 99 as Figs. 1 and 2, in Fig. 3 indicated by dotted lines, and in Fig. 4;
hh are the fixing plates, Figs. 1 and 2 detached, and Figs. 3 and 4 in application
being secured to a and b by the screws i, jj are the lugs one being on a, and one
on these receive the endless screw being fixed to j at one end, and provided
with a milled head at the other end in connection with the other lug j, m is a
belical spring bearing against the inner surface of jj, and tend to keep them apart,
by the power of the head on the screw k and against the resistance of m, the jaws
are brought together and a firm grip is effected.
The intervening space n between a and b indicate the measurement or distance
the jaws are required to be opened, snch as will grip a quarter inch or half inch
and so on.

page_text: The above being our said invention we observe in conclusion that we do not limit
ourselves to the precise details as shown on the accompanying sheet of drawings
but we hold ourselves at liberty to alter or modify the same without departing
essentially from our said invention; for instance we may construct the sides a, b,
with their edges bevelled or inclined, and the guides g, g, in which they move would
be made to correspond but this would entail more labour than the description and
illustration we give.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
66
Improvements in or relating to adjustable spanners."
1st. The construction of two longitudinal halves or sides for engaging upon, and
sliding upon each other, their ends being provided with jaws the said sliding
movement producing the opening and closing of the same, substantially as herein
before described and illustrated.
2nd. The construction of two longitudinal halves or sides sliding upon each other
in guides, inseparable therefrom by the fixing plates; the two lugs on the said
halves or sides carrying the bead on the screw and spring for operating that is the
opening and closing of the jaws and retaining same in an adjusted position, and with
the measurement indicated thereon, substantially as herein before described and
illustrated.
3rd. The general combination and arrangement of parts substantially for the
purposes as berein before described in the foregoing Specification and illustrated
on the accompanying sheet of drawings.
Dated 3rd November 1894.
THOS. KENDRICK,
3, Cherry Street, Birmingham, Agent.