CERTAIN IMPROVEMENTS IN THE CONSTRUCTION OF SCREW WRENCHES AND SPANNERS FOR SCREWING AND UNSCREWING NUTS AND BOLTS
Year: 1840

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
STUBS, of Warrington, in the County of Lancaster, File Manufacturer, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of Great Britain, bearing date
at Westminster, the Thirty-first day of December, in the fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Joseph Stubs, Her especial licence, full power, sole privilege and
authority, that I, the said Joseph Stubs, my executors, administrators, and
assigns, and such others as I, the said Joseph Stubs, my executors, adminis-
trators, or assigns, should at any time agree with, and no others, from time to
time and at all times during the term of years therein mentioned, should and
lawfully might make, use, exercise, and vend, within England, Wales, and
the Town of Berwick-upon-Tweed, an Invention of "CERTAIN IMPROVEMENTS
IN THE CONSTRUCTION OF SCREW WRENCHES AND SPANNERS FOR SCREWING AND
UNSCREWING NUTS AND BOLTS," being a communication from a foreigner
residing abroad; in which said Letters Patent is contained a proviso,
obliging me, the said Joseph Stubs, by an instrument in writing under my
hand and seal, particularly to describe and ascertain the nature of the said
Invention, and in what manner the same is to be performed, and to cause
the same to be inrolled in Her Majesty's High Court of Chancery within
six calendar months next and immediately after the date of the said in part

page_text: recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Joseph Stubs, do hereby declare that the nature of the said Invention, and the
manner in which the same is to be performed, are particularly described and
ascertained in and by the following description thereof, reference being had to
the Drawings hereunto annexed, and to the letters and figures marked thereon,
that is to say:-
This Invention consists in an improved construction of screw wrench or
spanner for turning screw bolts or screw nuts, and in a novel mode of opening
or closing and holding the jaws or chaps of screw wrenches or spanners,
whereby such instruments are made considerably stronger than those upon the
old construction. In the accompanying Drawing, Fig. 1 represents a side view
of the screw wrench or spanner complete; Figure 2 is a vertical section taken
longitudinally through the same; and Fig. 3 is a vertical section taken trans-
versely or at right angles to the former, through the line A, B. a is the fixed
chap, forming one piece with the stem and handle b, b; c, c, is the movable
chap, which slides along the stem in the slot d. Fig. 4 is a side view of the
movable chap detached; and Fig. 5 is a front: view of the same. Fig. 6
represents the stem and handle of the wrench in a horizontal view, the sliding
chap being removed; a screw shaft e, inserted into the head of the chap a, is
fixed in a position parallel to the back of the stem b, passing through a
cylindrical opening in the head of the movable chap, and at its outer end this
shaft is held by a staple f; the movable chap c slides freely along the stem
in the slot d, in order that the jaws of the spanner may be opened to any
required distance, and when the mováble chap has been placed in the desired
position, the nuts 9 and h, upon the shaft e, are screwed up to their bearings
against the head of the movable chap, which thereby confines it securely.
When any alteration in the distance between the chaps is required, it may be
effected readily by unscrewing either of the nuts and moving the chap c back-
ward or forward by hand, and then screwing the nuts up to the movable
chap as described, so as prevent it from. moving. In manufacturing this
improved screw wrench it is necessary to fit the movable chap into the slot
of the stem, and to make it slide freely therein, before, the slot is closed by
welding on the handle.
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Ilaving now described all the features of this Invention and the manner in
which I prefer to construct it, I wish it to be understood that though some
slight alterations in its form may be adopted, yet the essential novelty and that
which I claim is, the moveable chap, sliding in a slot in the stem, the distance

page_text: between the two chaps a and c being regulated and determined by nuts moving
along a stationary threaded shaft.
In witness whereof, I, the said Joseph Stubs, have hereunto set my
hand and seal, this Twenty-sixth day of June, in the year of our Lord
One thousand eight hundred and forty-one.
AND BE IT REMEMBERED, that on the same Twenty-sixth day of June,
in the year above mentioned, the aforesaid Joseph Stubs came before our
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
O said, and all and every thing therein contained, in form above written. And
also the Specification aforesaid was stamped according to the tenor of the
Statute in that case made and provided.