IMPROVEMENTS IN SCREWS
Year: 1858

page_text: LETTERS PATENT to Robert Dawson Clegg, of Manchester, in the County
of Lancaster, Gentleman, for the Invention of "IMPROVEMENTS IN
SCREWS."
Sealed the 19th April 1859. and dated the 20th October 1858.
PROVISIONAL
SPECIFICATION left by the said Robert Dawson Clegg
at the Office of the Commissioners of Patents, with his Petition, on the
20th October 1858.
ROBERT DAWSON CLEGG, of Manchester, in the County of Lancaster.
Gentleman, do hereby declare the nature of the said Invention for "IMPROVE.
MENTS IN SCREWS," to be as follows:-
My Invention consists in making screws of such form and construction that
they can be fixed or screwed without a hole being first pierced or bored for
that purpose.
The mode by which I effect this is to make a part or parts of
the screw similar to a gimlet or other boring instrument.

page_text: SPECIFICATION
in pursuance of the conditions of the Letters Patent, filed
by the said Robert Dawson Clegg in the Great Seal Patent Office on
the 20th April 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
DAWSON CLEGG. of Manchester, in the County of Lancaster. Gentleman. send
greeting,
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of October, in the year of our Lord
One thousand eight hundred and fifty-eight. in the twenty-second year of
Her reign, did. for Herself, Iler heirs and successors, give and grant unto
me, the said Robert Dawson Clegg. Her special licence that I. the said
Robert Dawson Clegg. my executors. administrators, and assigns. or
such others as I, the said Robert Dawson Clegg. my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN SCREWS," upon the condition (amongst
others) that I. the said Robert Dawson Clegg, my executors or admini-
strators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Robert Dawson Clegg, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say:-
My Invention consists in making screws of such form and construction that
they can be fixed or screwed without a hole being first pierced or bored for
that purpose.
The mode by which I effect. this is to make a part or parts of
the screw similar to a gimlet or any other boring instrument.
In the Drawings hereunto annexed, I have illustrated the manner in which
I prefer to apply my improvements in constructing the screws. Figures 1, 2,
3, 4, 5, 6, 7, and 8 shew some of the forms of screws, but I do not confine
myself in regard to the exact length or lengths of them or any part or parts

page_text: thereof, such being made according to the different requirements for which
they may be made.
Screws of the foregoing description may be applied to a variety of articles,
such as hooks, rings. handles, knobs, arms, brackets, and to all purposes for
which screws are required otherwise than for penetrating metal.
And having now described the nature of my said Invention. I declare that
I claim, the construction and employment of screws such as I have herein
described and illustrated in the Drawings hereunto annexed.
In witness whereof. I. the said Robert Dawson Clegg. have hereunto set
my hand and seal. this Nineteenth day of April, in the year of our
Lord One thousand eight hundred and fifty-nine.
Witness,
EDWARD CAVELL BANYARD.
ROBT. DAWSON CLEGG. (..s.)