Improvements in Screw-wrenches or Spanners.
Year: 1899

page_text: Date of Application, 27th June, 1899-Accepted. 29th July
1000
5
COMPLETE SPECIFICATION.
Improvements in Screw-wrenches or Spanners.
I, FRANCIS JOSEPH CULLIGAN, of Church Street, Ennis, in County of Clare
Ireland, Student, 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 improvements in screw-wrenches or spanners, and
has for its object the provision of a screw-wrench or spanner which can be
more easily adjusted to fit varying sizes of nuts than heretofore, and further-
more to combine with such screw-wrench or spanner, a screw-driver, the whole
being arranged in a handy and simple form.
Reference is to be had to the accompanying sheet of illustrative drawings,
wherein :--
Fig. 1, is a side elevation of the adjustable jaw and sliding bar.
Fig. 2, a sectional view of the body and fixed jaw of the wrench or spanner.
Fig. 3, is a side elevational view, partly in section of a complete wrench or
spanner constructed in accordance with my invention, and, Fig. 4, is a plan
view of a detail thereof.
Referring to the drawings, wherein like letters and figures of reference indicate
corresponding parts throughout the several figures, a represents the handle of
the screw-wrench or spanner having a fixed jaw b of usual form.
A longitudinally disposed channel e is provided in the handle a, such channel
extending the whole length of the latter and having an opening at each end.
Within the said channel a bar d is movably disposed, such bar preferably
being rectangular in cross section, and having teeth upon both its shorter
sides, such teeth extending for the greater part of the length of the said bar.
The upper end of the bar
ower end is bevelled off upon its wider sides in order to form a screw-driver.
is provided with a jaw d² of usual form, while the
The aforesaid channel in which is disposed the travelling bar d is situated
omewhat nearer one side of the handle a than the other side, in order to provide
pace for the accomodation of the device for actuating the travelling bar.
The said bar-actuating device consists of a small toothed wheel e which is
isposed within a recess a¹ in the body a, such toothed wheel meshing with the
eth upon one of the narrow sides of the travelling bar d.
The said toothed wheel e is pivoted to the back of the recessed portion of the
dy a, a handle f being rivetted or otherwise fixed to the front of the toothed
eel e at e. This handle is hinged about mid-way of its length as at fl, so
at it can be folded when not in use, the projection or knob fat its free end
ng snugly in a recess f³ in the other or fixed half of the handle, when the
ged half of such handle is turned down upon the said fixed half.
In order to prevent the movable jaw becoming displaced when the wrench
panner is being used to turn a nut or the like, a stud (not shewn) may be
vided upon the under side of the handle f, such stud taking into any desired
of a number of openings h in the face of the handle a
D

page_text: A plate, not shewn, may be fixed over the recess a¹, of the handle, such plate
having an opening for the handle f to project through.
In operation, the travelling bar d carrying the movable jaw is moved upward
or downward in the handle a, in order to effect the necessary adjustment, by
turning the handle f in the desired direction, the said bar being held at the
desired point in the manner herein before referred to.
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;
1. The improvements in screw-spanners or wrenches, consisting in forming the
sliding bar carrying the movable jaw with teeth upon one or more of its sides,
with which teeth a toothed wheel pivoted in a recess in the handle, engages said
toothed wheel being operated, to cause the travelling bar to move upward or
downward in a channel in the handle by means of a hinged handle, substantially
as described and shewn.
2. In screw-wrenches or spanners, the travelling bar carrying the movable
jaw, having teeth upon one or more of its sides, said bar being slidingly disposed
in a lengthwise channel in the handle; in combination with a toothed-wheel
pivoted in a recess in the handle, said toothed wheel engaging with the teeth of
the said travelling bar in order to move said bar upward or downward in the.
channel, and a handle fixed to said toothed wheel, said handle being hinged in the
centre and carrying a projecting knob adapted to lie in a recess in the surface of
the fixed end of the handle when said handle is in its folded position, all arranged,
combined, and operating, substantially as described and as illustrated.
Dated this 27th day of June 1800
HUGHES & YOUNG,
55 and 56, Chancery Lane, London, W.C., Agents for Applicant.