IMPROVEMENTS IN FIXING SCREW PILES AND MOORINGS
Year: 1860

page_text: LETTERS PATENT to Frederick Johnson, of 12, North Street, Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN FIXING SCREW
PILES AND MOORINGS."
Sealed the 18th January 1861, and dated the 1st November 1860.
PROVISIONAL SPECIFICATION left by the said Frederick Johnson at
the Office of the Commissioners of Patents, with his Petition, on the
1st November 1860.
I, FREDERICK JOHNSON, of 12, North Street, Westminster, Civil Engineer,
5 do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
FIXING SCREW PILES AND MOORINGS," to be as follows, and consists in the
application of hydraulic power for giving to the piles or moorings a rotary
motion; the power can be applied either direct or through an arrangement of
gearing, or to the present system of ropes, capstan, & bars.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Johnson in the Great Seal Patent Office on
the 30th January 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
JOHNSON, of 12, North Street, Westminster, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of November, in the year of our Lord One
thousand eight hundred and sixty, in the twenty-fourth year of Her reign,
did, for Herself, Hér heirs and successors, give and grant unto me, the said
Frederick Johnson, Her special licence that I, the said Frederick Johnson,
my executors, administrators, and assigns, or such others as I, the said
Frederick Johnson, 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 "Iм-
PROVEMENTS IN FIXING SCREW PILES AND MOORINGS," upon the condition
(amongst others) that I, the said Frederick Johnson; my executors or admi-
nistrators, 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 Frederick Johnson, do hereby declaro
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say:-
This Invention consists in the application of hydraulic power for giving to
the piles or moorings a rotary motion to fix them in the ground. The
hydraulic power can be applied either direct on the screw pile, or on the shaft
used to fix screw moorings, or the power can be transmitted through an
arrangement of gearing consisting of spur, bevil wheels, or an endless screw
connected to the bydraulic engine by means of a shaft; or the hydraulic
power can be applied to work a winch in the place of manual labour or
steam power, as at present employed, which, together with capstan head, bars,
and rope messenger, comprises the present system of fixing screw pilework.
I do not confine myself to any particular form of hydraulic engine, as a

page_text: rotary hydraulic engine can be advantageously used when the power can be
applied direct; neither do I confine myself to any particular method of
connecting the engine to the pile or mooring; and neither do I confine myself
to one cylinder, or to a combination of cylinders placed in any particular
position, neither to the gearing in connection with the cylinders; but what I
claim is, the application of hydraulic power to give to screw piles or moorings
a rotary motion to fix them in the ground.
In witness whereof, I, the said Frederick Johnson, have hereunto set
my hand and seal, this Thirtieth day of January, in the year of our
Lord 1861.
FREDERICK JOHNSON. (L.S.)