IMPROVEMENTS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said Charles Neil at the Office
of the Commissioners of Patents on the 10th March 1883.
CHARLES NEIL of Sheffield in the County of York
ADJUSTABLE SPANNERS"
"IMPROVEMENTS IN
My Invention relates to improvements in adjustable spanners, and particularly
to those known as the "Clyburn" and the "Budding" spanner, in which a worm
or threaded roller is used to work or adjust the sliding jaw; the object of my
invention being to simplify the construction and reduce the cost of manufacture.
It is usual for the worm or roller to revolve upon a pin, screwed into the head of
the spanner, but in a spanner made according to my invention I do away with the
pin altogether and thereby save a considerable amount of labour, such as boring
the hole through the worm or roller, boring the hole for the pin, in the head of the
spanner, and the formation of the pin.
d either
In carrying out my invention I make the worm or threaded roller solid-
singly, or by turning and threading a given length, and then dividing it into the
desired lengths, suitable for rollers.
The opening in the head of the Spanner for the worm, is made with a concave
or spout shaped bottom corresponding with the diameter of the roller or there-
abouts, and the roller is passed into the opening and rests in the concave or
spoutshaped bollow. The sliding jaw which is threaded on its underside to
correspond with the thread on the worm or roller, is now placed in position and is
drawn forward by turning round the roller-The roller cannot fall out being held
between the threads on the underside of the jaw, and the concavity of the
underside of the opening in the head.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Neil in the Great Seal Patent Office on the 8th September
1883.
"
CHARLES NEIL of Sheffield in the County of York " IMPROVEMENTS IN
ADJUSTABLE SPANNERS
"
My invention relates to improvements in adjustable spanners being applicable to
various designs, but more particularly to those known to the trade as the
Clyburn" and the "Budding" spanners, in which a worm or threaded roller is
used to work and adjust the sliding jaw; the object of the invention being to
simplify the construction, and as a consequence reduce the cost of manufacture.
In the Clyburn and Budding spanner of ordinary construction it is usual for the
worm or roller to be bored through and to work upon a pin or axle, which is
screwed into a suitable hole bored through the head of the spanner, or in the jaw,
but in a spanner made according to my invention I do away with the use of a pin
or axle altogether, and therefore dispense with the labour of boring' the worm or
roller and also the hole in the head or jaw. And in order that my invention may
be fully and very clearly understood I will describe its application in the
construction of a Clyburn Spanner and shall refer to the accompanying sheet of
drawings, premising that the same letters of reference indicate the same parts in
all the figures.
Fig. 1, represents the head and part of the handle of a Clyburn Spanner before
the loose jaw and worm are placed in position.
Fig. 2, is a sectional view through the line X X.
Fig. 3, is the loose or adjustable jaw.
Fig. 4, side and end view of the worm or roller.
Fig. 5, represents the completed spanner.
In making a Clyburn Spanner (for example) I make the head A with the
usual opening for the sliding jaw B, and also with an opening C to receive the
worm D which
made solid, and not with a centre hole as is usually the case.
The bottom side of the hole C is made concave, or with a sunk recess E, either
shaped to correspond with the diameter of the worm, or to receive a spring or
cushion as may be considered desirable. I prefer to make one side of the
opening C rather smaller than the other so as to prevent the worm from slipping
through when being inserted or placed in position. The loose jaw B, is threaded
on its underside to correspond with the thread on the worm or roller
When the worm or roller is placed in position in the opening C, the sliding jaw
is pushed forward and the worm being rotated by the thumb and finger engages
with the thread of the jaw, and draws it forward.
The roller or worm cannot come out of the opening being securely held between
the concavity E, and the curved underside of the jaw B. The same principle of
securing and working a solid worm or roller may be applied to adjustable jaws
sliding on straight serrated handles.
Having now described and fully ascertained the nature of my said invention
and the manner in which it may be used or carried into practice, I will in
conclusion observe that what I consider to be novel and original and therefore

page_text: claim as the invention secured to me by the hereinbefore in part recited Letters
Patent is:-
In adjustable Spanners of whatever configuration, the use of a solid worm or
roller for actuating the adjustable jaw, held or secured in the manner hereinbefore
described and as illustrated.
In witness whereof I the said Charles Neil have hereunto set my hand and
seal this twenty eighth day of August in the year of our Lord One thousand eight
hundred and eighty three