CERTAIN APPARATUS TO BE APPLIED TO A WINDLASS
Year: 1824

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
YETTS, of Great Yarmouth, in the County of Norfolk, Merchant and Ship
Owner, send greeting.
of
WHEREAS His present most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing
date at Westminster, the Twenty-eighth day of February, in the fifth year
His reign, did, for Himself. His heirs and successors, give and grant unto me,
the said William Yetts, His especial licence, that I, the said William Yetts,
my exors, admors, and assigns; or such others as I, the said William Yetts,
my exors, adñors, or assigns, should at any time agree with, and no others,
from time to time and at all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, and also in all His said
Majesty's Colonies and Plantations abroad, my Invention of " CERTAIN
APPARATUS TO BE APPLIED TO A WINDLASS;" in which said Letters Patent there
is contained a proviso obliging me, the said William Yetts, by an instrument
in writing under my hand and seal, particularly to describe and ascertain the
nature of my said Invention, and in what manner the same is to be per-
formed, and to cause the same to be enrolled in His Majesty's High Court
of Chancery within two calendar months next and immediately after the date

page_text: of the said in part recited Letters Patent, as in and by the same, reference
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Yetts, do hereby declare the nature of my said Invention to consist
in securing the forward end of a lever bar, such as is herein-after more
particularly mentioned and described, by means of a perpendicular and
diagonally supported standard and bearing, which constitutes a part of my
said apparatus, and also in an additional pall placed abaft and lying against
and partly round the windlass barrel, and acting upwards from the deck,
which constitutes the remaining part of my said apparatus. And in further
compliance with the said proviso, I, the said William Yetts, do hereby describe
the manner in which I perform my said Invention, by the following descrip-
tion thereof, reference being had to the Plate annexed and Figures marked
thereon (that is to say) :-
DESCRIPTION OF THE PLATE.
Fig. 1 is a perspective view of a ship's compass with my said apparatus
applied thereto. B is the lower part of the safety pall fastened through the
deck to a beam under it, and moving with a joint at e.
C is the upper part
of the safety pall moving on a joint at f. These two parts of the safety pall
are kept to their place against and partly round the windlass barrel by means
of a chain S, which, in order to allow of the necessary play for the motion of
the palls over the ratchets, is attached at one end to the flat spring 9, which is
fixed to the pall bit, as shewn in the Figure. r, r, are ratchets on one side of
the ordinary cogs on the windlass barrel; there are a similar set of ratchets
on the other side of the cogs, but which in this view are hid by the rim or
flange X. On the under side of each part of the safety pall are teeth which
take into the ratchets r, r, and thus assist the ordinary palls of the pall bit in
preventing the windlass from revolving in a direction forwards. X, X, are rims
or flanges raised on each side of the ratchets r, r, for the purpose of keeping
the two parts of the safety pall in their proper place. t, t, are the bottom
parts or feet of the perpendicular standard described more particularly at
Fig. 5. Fig. 2 represents a perspective view of the said safety pall, shewing
the teeth or catches L, L, which take into the ratchets r, r, Fig. 1. Fig. 8
represents a section of the windlass barrel shewing the form of the ratchets r,r,
and their relative position with respect to the ordinary cogs of the barrel, as
also the rim or flange X, X. Fig. 4 represents a section of the windlass barrel
of the said safety pall, and of the ordinary palls of the pall bit, and this Figure
is given for the purpose of describing the manner of setting the safety pall for

page_text: use, which is as follows (that is to say):-The safety pall being only intended to
act for the purpose of resistance when a more than ordinary strain is brought
upon the ordinary palls, the teeth of the safety pall should be set about one
eighth of an inch clear of the ratchet opposed to it, when the ordinary pall bears
close against its corresponding cog, then when any extraordinary pressure
against the ordinary pall bit causes it to spring off the safety pall takes against
the ratchets, and adds its resistance to the ordinary palls. e, e, in this Figure,
are the ordinary half palls. m, m, m, are the ordinary palls in their resisting
position. B and C are the two parts of the safety pall at the distance of one
eighth of an inch from their corresponding ratchets. Fig. 5 is a representa-
tion of a section of the windlass, showing that part of my said Invention
which refers to the forward end of the lever bar. H is the lever bar passed
through one of the handspike holes in a horizontal position, the after end P
being retained by a long hook bar going into an eye bolt in the deck at the
end N, and swinging on an eye joint at the end P. The part marked G is to
represent the perpendicular handspike hole corresponding with the horizontal
one which intersects it. Now, so far as this Figure 5 is hereby described, I
do not claim any novelty or exclusive privilege, but only in the parts herein-
after described, as follows (that is to say):-0 is the forward end of the lever
bar, which it will be seen enters into the bearing R, which is supported from
the deck by the perpendicular standard W, and which standard is supported
in turn by the diagonal bar D, which is fastened to the deck at F. These
standards and bearings, and the diagonal bar, as also the safety pall, I make
of cast iron, and of the proportions represented in the Plate annexed, the size
of course varying with the size of the windlass. Now, whereas I am the true
and first Inventor of the whole herein-before described lever bar and long hook
bar, as shewn in Fig. 5, and in fact of the mode obtained thereby of pre-
venting the windlass from revolving in any direction; but whereas I have
published heretofore, and have allowed the public use of so much of the said
lever bar as is described by the letters H, P, and N, I therefore do not claim
exclusive privilege to that part thereof; but such a bearing and standard,
as aforesaid, for securing the forward end of the lever bar, and such a
safety pall, as aforesaid, placed abaft the windlass and acting upon it
upwards from the deck in manner and form aforesaid, being to the best of my
knowledge and belief entirely new, and never before used in these Kingdoms,
I do hereby declare this to be my Specification of the same, and that I
do verily believe this my said Specification doth comply in all respects fully
and without reserve or disguise with the proviso in my said herein-before in

page_text: part recited Letters Patent contained; wherefore I do hereby claim to maintain
exclusive right and privilege to my said Invention.
In witness whereof, I, the said William Yetts, have hereunto set
my hand and seal, this Nineteenth day of April, in the year of our
Lord One thousand eight hundred and twenty-four.
AND BE IT REMEMBERED, that on the Nineteenth day of April, in the
year of our Lord 1824, the aforesaid William Yetts came before our said
Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Inrolled the Twenty-sixth day of April, in the year of our Lord One
thousand eight hundred and twenty-four.