IMPROVEMENTS IN WINDLASSES, AND IN CHECKING OR STOPPING CHAINS WORKED THEREBY
Year: 1861

page_text: LETTERS PATENT to Thomas Moore, of No. 33, Regent Circus, Picca-
dilly, in the County of Middlesex, for the Invention of "IMPROVEMENTS
IN WINDLASSES, AND IN CHECKING OR STOPPING CHAINS WORKED THEREBY.”
PROVISIONAL SPECIFICATION left by the said Thomas Moore at the
Office of the Commissioners of Patents, with his Petition, on the 25th
October 1861.
I, THOMAS MOORE, of No. 33, Regent Circus, Piccadilly, in the County of
Middlesex, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN WINDLASSES, AND IN CHECKING OR STOPPING CHAINS WORKED THEREBY,"
to be as follows:-
The objects of this Invention are, firstly, to work windlasses on board ship
or elsewhere in a more simple and efficient manner than heretofore; and,
secondly, to stop or check the progress of cable or other chains in connection
therewith. I propose to attach a spur wheel to the lower part of the shaft
of the capstan, or to a shaft driven by steam or other power below the deck,
on each side of which wheel smaller spur wheels work. These latter are fixed
to the upper end of two vertical shafts furnished with worms or threads of a
screw, so as to produce (when in action) endless screws, which work into teeth

page_text: on the periphery of the windlass which is fixed in the vessel to a framing
between decks. A double set of spur wheels, one or both lowered or raised
by a lever to regulate the speed or power of the windlass, may be fitted on the
vertical shafts. The periphery of the windlass may be furnished in the centre
with a deep screw thread presenting a curved or circular outline, in order that
the vertical shafts and screws may work within it to the depth of nearly their
semi-diameters, or the windlass may be furnished with two toothed or cogged
wheels with a ratchet wheel between them, and a catch or dog working into
the ratchet, or with one cog wheel in the centre, and a ratchet wheel on each
side thereof with a double or fork-shaped pall or catch to work therein. The
windlass may also be turned by the agency of one screw on a vertical shaft
instead of two, as mentioned, by extending the vertical shaft of the capstan or
a distinct shaft from or above the upper deck to the deck below. The self-
acting chain, stopper, or check is formed somewhat in the shape of a double
railway chair, and the opening into which the rail is placed is in this instance
provided with a hinged nipper, having spaces formed on its inner surface to
fit the chain, so that when this nipper is tilted across into the opening it fits
and presses upon the chain, and is there held by a suitable lever. This stopper
is placed in a line with the chain in its passage to the hawse hole, and is
elevated to any.height or inclination, according to the lead of the chain, or
the stopper may be furnished with a longitudinal clapper and jaw, correspond-
ing with the pattern of the chain, in order to seize or take the links; also
with a shoulder to take or guide the links for the purpose of keeping them in
position preparatory to the falling of the clapper. Another mode of checking
the chain when it is passing from the windlass to the locker is by fixing a
hinged nipper, in the form of a horse-shoe, to an upright or extension of the
combings of the locker hole actuated by a horizontal lever, and in paying-in
the cable, to dispense with hands, the chain may pass over a roller near the
combing, the said roller being actuated by an endless strap or band passing
from the barrel to the roller.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Moore in the Great Seal Patent Office on the
25th April 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
MOORE, of No. 33, Regent Circus, Piccadilly, in the County of Middlesex,
send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of October, in the year of our.
Lord One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto.
me, the said Thomas Moore, Her special licence that the said Thomas.
Moore, my executors, administrators, and assigns, or such others as I, the:
said Thomas Moore, 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 "IMPROVEMENTS
IN WINDLASSES, AND IN CHECKING OR STOPPING CHAINS WORKED THEREBY,"
the condition (amongst others) that. I, the said Thomas Moore, 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.
upon
NOW KNOW YE, that I, the said Thomas Moore, 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:-
The objects of this Invention are, firstly, to work windlasses on board ship
or elsewhere by a more powerful purchase and efficient manner than hereto-
fore; and, secondly, to stop or check the progress of cable or other chains in
connection therewith.
In order to explain my said Invention as completely as possible, I now
proceed to describe the best, means I am acquainted with for carrying the
same into practical effect, reference being had to the accompanying Sheet
of illustrative Drawings, and to the numeral figures and letters of reference
marked thereon as follows:-
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a front view of the capstan and windlasses; Fig. 2, a sectional
end view of the same, taken through the line A, B, Fig. 1; Fig. 3, a side view
of the chain stopper; Fig. 4, an end view of Fig. 3; and Figs. 5 and 6 are
detached portions of the stopper; similar letters of reference denoting corre-

page_text: At Figs. 1 and 2 will be seen a spur wheel a, attached to the lower part of the
shaft of the capstan, upon which shaft is placed a screw nut b, which upon being
lowered allows the spur wheel a to drop out of gear of the small wheels c, c,
and thus the capstan may be worked with or without the windlass. The spur
wheel may also be raised or lowered by a horizontal lever; or the capstan may
be double-headed, as shewn, so that the upper head may work both the
capstan and windlass; or when required to work the capstan alone, the bars
are to be inserted into the lower head when the capstan will revolve inde-
pendently of the windlass, being disconnected therefrom. The shafts may be
driven by steam power, or by bars or levers attached to a drum-head on top
of the driving shaft. The wheels c, c, are secured to the upper ends of two
vertical shafts d, d, furnished with worms or threads of a screw, so as to
produce (when in action) endless screws, which work into teeth on the peri-
phery of the toothed wheels e, one on each side of a ratchet wheel f, and on
opposite sides of the windlass placed in the centre thereof, as shewn, the whole
being fixed in the vessel to a framing between decks, the ratchet wheelf being
provided with palls g, g. The windlass may also be worked by the agency of
one screw on a vertical shaft instead of two, as before mentioned, by extending
the capstan shaft, or a separate shaft from or above the upper to the lower
deck, and fitting the same with a wormed screw. The self-acting chain
stopper or check will be seen at Fig. 3, which is a side view with the stopper
or forked tongue h, raised to allow of the chains being paid out. Fig. 4 is an
end view of Fig. 3, shewing the tongue h, lowered for the purpose of stopping
the chain at every alternate link when hauling in, the vertical links passing
through the opening i, while the horizontal links lie flat on the upper sur-
faces i, j, of the guide and travel thereon; the prongs k, k, of the tongue h
preventing the link slipping back, although in hauling-in every horizontal link
slightly raises the tongue sufficient to allow it to pass in, the tongue rising
and falling by means of a pin 1 passing through it. Fig. 5 is a detached front
view of the tongue h raised, and Fig. 6, a front view of the tongue lowered;
the opening i, and prongs k, k, being shewn in both of these views.
"
Having now described the nature and object of my said Invention of
Improvements in Windlasses, and in Checking or Stopping Chains worked
thereby," and the manner in which the same is to be performed, I would
remark, in conclusion, that. I do not confine or restrict myself to the precise
details herein described and shewn in the accompanying Sheet of illustrative
Drawings, as the same may be slightly varied or modified in many ways
without at all departing from the principle of my Invention; but I claim and
therefore desire to be secured to me by the herein in part recited Letters

page_text: Patent, the application of endless screws with appliances connected therewith
for turning windlasses and self-acting chain stoppers to be used therewith, in
the manner herein described and shewn, or others substantially the same, for
the purposes set forth.
In witness whereof, I, the said Thomas Moore, have hereunto set my
hand and seal, this Twenty-fourth day of April, One thousand eight
hundred and sixty two
THOMAS MOORE. (L.S.)
Witness,
ALEX. PRINCE,
Agent for Patents,
4, Trafalgar Square, Charing Cross.