IMPROVEMENTS IN TOOLS FOR SCREW-DRIVING, BORING, AND DRILLING."
Year: 1864

page_text: LETTERS PATENT to Francis Stephen Gilbert, of Whitechapel, in the
County of Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN
TOOLS FOR SCREW-DRIVING, BORING, AND DRILLING."
PROVISIONAL SPECIFICATION left by the said Francis Stephen Gilbert
at the Office of the Commissioners of Patents, with his Petition, on
the 4th November 1864.
I, FRANCIS STEPHEN GILBERT, of Whitechapel, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN TOOLS FOR SCREW-DRIVING, BORING, AND DRILLING," to be as follows:-
My Invention consists in constructing tools for screw-driving, drilling, and
boring as hereafter explained. I fit a nut in the lower end of the bandle,
which I form hollow for the greater part of its length, and I set in this nut a
threaded shaft, at the bottom of which I place a bit, drill, or other instrument
suitable for the particular work required. Upon pressing upon the handle the
threaded shaft will be caused to rotate, recede into the hollow of the handle,
and the drill or other instrument will be also rotated. A spring inside the
handle forces out the threaded shaft when pressure is withdrawn.
In some cases I apply a loose nut and ratchet and paul to prevent the
turning of the bandle in the hand when the pressure is withdrawn. I
The accompanying Drawing is an external elevation of one of these improved
tools. A is the hollow handle; B, the nut; C, the threaded shaft ; and D,
the drill, screw-driver, or borer.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Francis Stephen Gilbert, in the Great Seal Patent Office on
the 4th May 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCIS
STEPHEN GILBERT, of Whitechapel, in the County of Middlesex, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of November, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Francis Stephen Gilbert, Her special licence that I, the said Francis
Stephen Gilbert, my executors, administrators, and assigns, or such others as
I, the said Francis Stephen Gilbert, my executors, administrators, 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 Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for "Iк-
PROVEMENTS IN TOOLS FOR SCREW-DRIVING, BORING, AND DRILLING," upon the
condition (amongst others) that I, the said Francis Stephen Gilbert, my
executors or administrators, 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 Francis Stephen Gilbert, 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 constructing tools for screw-driving, drilling, and
boring as hereafter explained. I fit a nut in the lower end of the handle,
which I form hollow for the greater part of its length, and I set in this nut à
threaded shaft, at the bottom of which I place a bit, drill, or other instrument
suitable for the particular work required.
Figure 1 of the accompanying Drawings is an external elevation, and
Figure 2 a vertical section of one of these improved tools.
A is the hollow handle; B, the nut; C, the threaded shaft, and D, the
drill, screw-driver, or borer. Upon pressing on the knob of the handle A, the

page_text: threaded shaft C will be caused to rotate, recede into the hollow of the handle,
and the drill or other instrument D will be also rotated. A spring E, inside
the handle, forces out the threaded shaft C when pressure is withdrawn.
In some cases I apply a nut F on the hollow handle A, Figures 1 and 2,
and a ratchet G on this nut. I also fit a paul H under the loose knob to take
into the ratchet to prevent the turning of the knob in the hand when the
pressure is withdrawn. In other cases I apply a loose nut F¹ in the fixed
nut B, as represented in the vertical section Figure 3 and bottom plan
Figure 4. This loose nut carries a ratchet G', into which a paul H' on the
nut B takes. In this arrangement neither the handle A nor its knob turns
when the pressure is removed. To prevent the handle A or shaft C turning
when the drill or other instrument D is being unscrewed or withdrawn, I
sometimes fit to the handle a spring I, carrying a projection J, which by
passing through an aperture in the handle and taking into a corresponding
recess in the shaft C locks the handle and shaft together.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim constructing tools
for screw-driving, boring, and drilling in manner herein-before described and
illustrated in the accompanying Drawings.
In witness whereof, I, the said Francis Stephen Gilbert, have hereunto
set my hand and seal, this Fourth day of May One thousand eight
hundred and sixty-five.