Improvements in or relating to Adjustable Spanners.
Year: 1896

page_text: Date of Application, 22nd May, 1896-Accepted, 4th July, 1896
COMPLETE SPECIFICATION.
Improvements in or relating to Adjustable Spanners.
We LLEWLLEYN AUGUSTUS PARROCK of 12 Willis Street Birmingham Mechanica!
Engineer and BENJAMIN WALDRON of 76 Ashted Row Birmingham Ironfounder,.
do hereby declare the nature of this 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 in which a ready
means of adjustment with a firm grip is effected and in a simple and efficacious.
manner.
The following describes our invention. One of the two jaws forming this spanner is:
permanent at the end of a bar of metal which in cross section is angular this bar
serves as a lever or handle for actuating the same the upper and lower edges being:
parallel the lower edge being serrated a required distance from the jaw.
The other jaw is formed with a slot in its edge to admit of it being placed upon
the said bar or lever, and to move or slide nearer to, or recede from the fixed jaw,
as may be required on the lower end of this slot we arrange the one end of a
lever which works upon a pin therein, the outer end being screwed, and has a
screwed nut thereon, the edge of the head being formed to engage on the serrations
on the edge of the bar or lever, a lamina spring is fixed to the lower part of this jaw
the end of which bears against the lower part of the jointed lever and keeps the nut
in one of the serrations a "stop pin" passing through the bar or lever prevents the
loose jaw from becoming detached.
In some cases we employ a metal sheath of thin guage which we arrange to slide
over or upon the bar or lever provided with a slot which is in connection with the
stop pin and by which it is held or controlled. When this sheath is brought outwards.
the bar or lever is increased in its length and in its power of leverage, when passed
upwards the serration are enclosed and the length shortened which is an advantage
in carriage.
We produce these spanners by stamping, casting or any other suitable means.
And in order that our invention may be more clearly understood and readily
carried into practice we have appended hereto a sheet of drawings upon which we
have fully illustrated the nature of the said improvements together with the mode of
and means for carrying the same into effect.
Figures 1 (a longitudinal view) and 2, 3, 4, 5 are parts detached but when put
together as shewn at Figure 6 (which is a side view elevation longitudinal) shews an
adjustable spanner constructed according to our invention.
Figure 7 is a side view longitudinal sbewing one part which can be employed to.
Figure 6 when required.
Figure 8 is an end view of same.
a is the bar or lever, b is the fixed jaw upon same, c is the serrated edge, d is the
moveable jaw, e is the slot, fis the lever working on d upon the pin g passed through
the holes g h is the screwed end off and i is the screwed nut j the head being formed
to engage in c. is the lamina spring secured to d, m is the stop pin, n is the sheath
with slot o.
To practically illustrate the action of the spanner.
The jaws being apart take the lever or handle a, in the right hand, and with the
thumb and forefinger press down h, this releases i from c, and admits of an upward
sliding movement of d towards b sufficient or nearly so to grip the nut or object to be

page_text: operated upon, upon releasing h, i will engage itself by the power of in the near
serration thereto, if there is any slack or play, by turning i in the proper direction it
is remedied, so that adjustinent to the smallest degree is effected, when the object is
accomplished, the action reversed releases the same.
In conclusion we would observe that we do not limit ourselves to the precise details,
as we may vary the same by making necessary or desirable changes without
departing essentially from the principle of our said invention.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed-we declare that what we
claim is-
In "Improvements in or relating to adjustable spanners."
1. The combination, the bar or lever a with serrated edge c, and fixed jaw b the
moveable jaw d, with slot e, the lever f with screwed end the nut i and spring 1
substantially as and for the purpose hereinbefore described.
2. The combination, the sheath n with slot o with stop pin m on a, substantially as
and for the purpose hereinbefore described.
3. The general construction combination and arrangement of parts substantially as
herein before described in the foregoing specification and illustrated on the
accompanying sheet of drawings.
THUS. KENDRICK,
Eldon Chambers, 50 Cherry Street, Birmingham, Agent for Applicants.