IMPROVEMENTS IN WINDLASSES
Year: 1871

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN WINDLASSES."-A communication
from abroad by Christopher Coatsworth Jordeson, of Montreal,
Canada, Master Mariner.
Sealed the 31st October 1871, and dated the 3rd May 1871.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 3rd May 1871.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN WINDLASSES," a com-
munication, to be as follows:-
This Invention relates to improvements in revolving windlasses and is
designed to increase their power without increasing the space occupied
by them, and it may be applied in any case where a great amount of
leverage is required, as, for instance, in the raising of anchors on board

page_text: vessels and the raising of vessels on slips and the like. And in cases
where this Invention is used on board vessels it provides a useful capstan
for lighter work situate on the upper deck of the vessel, while that for
the heavy work is placed on the main deck.
Any ordinary or suitable framework is provided for holding the various
parts of the machine in their respective positions. I use a capstan of
ordinary form, except that the shaft on which it revolves extends down-
wards and on its lower part it has a screw. A three threaded screw will
be found convenient for this purpose, but I do not confine myself to any
particular pitch or any number of threads, it being sufficient to state
that they will be in proportion to the amount of leverage required. I
would also remark that the thread of the screw is that known by the
name of a box screw," but, if preferred, a "V screw may be used.
The shaft is situated at a suitable distance from the
windlass for the thread of the screw to intermesh with the teeth of a
wheel properly configurated for that purpose fixed on the said barrel,
and, if desired, more than one tooth of the said wheel may be in gear
with the thread or threads of the screw. The apparatus above described
is provided-with the ordinary pawl or resistance posts and set of pawls
biting into suitable toothed wheels for that purpose.
८८
"
barrel of the
It is evident that the power of this machine may be increased to
almost an unlimited extent by diminishing the pitch of the screw on the
shaft and increasing the diameter or the number of teeth on the wheel
or by multiplying the parts in the same manner as in a compound lever
to give additional power. The capstan is also provided with the ordinary
pawls and with any suitable openings for the reception of a corresponding
number of handspikes, by which it is operated.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 1st November 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of May, in the year of our

page_text: Lord One thousand eight hundred and seventy-one, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Robert Lake, Her special licence that
I, the said William Robert Lake, my executors, administrators, and
assigns, or such others as I, the said William Robert Lake, my exe-
cutors, 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 "IMPROVEMENTS
IN WINDLASSES," a communication to me from abroad by Christopher
Coatsworth Jordeson, of Montreal, Canada, Master Mariner, upon the
condition (amongst others) that I, the said William Robert Lake, my
exccutors 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the accompanying
Drawing forming a part of this Specification:-
This Invention relates to improvements in revolving windlasses and
is designed to increase their power without increasing the space occupied
by them, and it may be applied in any case where a great amount of
leverage is required, as, for instance, in the raising of anchors on board
vessels and the raising of vessels on ships and the like. And in cases
where this Invention is used on board vessels it provides a useful
capstan for lighter work situate on the upper deck of the vessel, while
that for the heavy work is placed on the main deck.

page_text: a is an ordinary or suitable framework for holding the various parts
of the machine in their respective positions; 6 is a capstan of ordinary
form except that the shaft c on which it revolves extends downwards,
and on its lower part a screw d is formed, as shown in the Drawing;
although a thrce-threaded screw is therein delineated, I do not confine
myself to any particular pitch or any number of threads, it being suffi-
cient to state that they will be in proportion to the amount of leverage
required. I would also remark that the thread of the screw shown in
the Drawing is that known as a "box screw," but, if preferred, a “V”
screw may be used. The shaft c is situated at a suitable distance from
the barrel e of the windlass for the thread of the screw d to intermeshi
with the teeth f of the wheel 9 properly configurated for that purpose,
and if desired, more than one tooth of the said wheel g may be in
gear with the thread or threads of the screw d. The apparatus above
described is provided with the ordinary pawl or resistance posts h and
set of pawls biting into suitable toothed wheels i, i, for that purpose.
It is evident that the power of this machine may be increased to
almost an unlimited extent by diminishing the pitch of the screw on
the shaft c, and increasing the diameter or the number of teeth on the
wheel g, or by multiplying the parts in the same manner as in a com-
pound lever to give additional power. The capstan 6 is also provided
with the ordinary pawls and with any suitable openings for the
reception of a corresponding number of handspikes n by which it is
anamted

page_text: Third. The novel combination of the capstan b on the shaft c inde-
pendent of the perpendicular or vertical screw d, as well as in its
combination with it, substantially in the manner described.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Twenty-eighth day of October,
in the year of our Lord One thousand eight hundred and seventy-
one.
Witness,
W. J. LOWE.
W. ROBT. LAKE. (L.S.)