IMPROVEMENTS IN MACHINERY FOR RAISING AND LOWERING WEIGHTS
Year: 1847

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BROWN, of Muscovy Court, Tower Hill, in the City of London, Agent, send
greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twentieth day of April,
One thousand eight hundred and forty-seven, in the tenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Thomas Brown, my exors, admors, and assigns, Her especial licence, full
power, sole privilege and authority, that I, the said Thomas Brown, my exors,
adiñors, and assigns, or such others as I, the said Thomas Brown, my exors,
admors, 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, the Invention of "IMPROVEMENTS IN
MACHINERY FOR RAISING AND LOWERING WEIGHTS," (partly communicated to me
from abroad, and partly of my own Invention); in which said Letters Patent
is contained a proviso that I, the said Thomas Brown, should cause a parti-
cular description of the nature of the said Invention, and in what manner the
same is to be performed, by an instrument in writing under my hand and
seal, to be inrolled in Her said Majesty's High Court of Chancery within
six calendar months next and immediately after the date 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.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Brown, do hereby declare that the nature of the said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say:
The Invention relates,-
First, to improvements in capstan, windlass, and other barrels used for
moving chains for raising and lowering weights; and,
Secondly, the Invention relates to improvements in the construction of
stoppers for chain cables.
And in order that the Invention may be fully understood and readily carried
into effect, I will proceed to describe the means pursued by me.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews an elevation of a capstan having the first part of my improve-
ments applied thereto. Figure 2 shews a plan in section. In constructing
capstan and other barrels for the moving of chains, it has been usual to so
form the working surfaces that they do not work well with different sizes of
chains. Now the object of the first part of my Invention is so to form the
working surfaces of a capstan or other barrel that such surfaces shall be equally
effective, whether using a large or a small chain; and the improvements con-
sist of the mode of combining the working surfaces a, b, and c, c, of a capstan,
windlass, or other barrel used for raising or lowering weights. a, b, are two
inclined planes forming what may be called a pulley around the lower part of
the barrel of a capstan. On these surfaces, and opposite each other, are the
projecting inclined plaues c, c, so formed, as is shewn, that the horizontal links
will rest between the surfaces c, and they will be allowed to approach more or
less near to the centre of the capstan, according as the vertical link is com-
paratively short or long, for such vertical links will rest against the inclined
surfaces of the parts a, b, and also against the inclined sides of the projections
c, c, by which arrangement the vertical links will be securely held and supported
by the four surfaces a, b, and c, c. The projecting surfaces c, c, receiving the
horizontal links between them, form also stops, and prevent them moving after
they are once fully received in the angular groove formed by the surfaces a
and b; and such is the case whether a larger or smaller chain cable be used.
d, d, are guide wheels, such as have heretofore been used with capstans. e, e,
are pauls which are inclined towards their back end, and are fixed to the deck,
as is shown, and I prefer to dispense with the deck paul rim, as is indicated at

page_text: Figure 1. It will be evident, from the above description, that a like combina-
tion of surfaces a, b, and c, c, may be applied on a windlass or other barrel
used for raising and lowering weights by chains, varying only the sizes of the
parts according to the range of sizes of chains which will be used on the same
barrel.
I will now describe the second part of my Invention, which relates to
stoppers of chains used when raising and lowering weights.
Figure 3 shews an elevation, and Figure 4 a plan of port bit, and also a
riding bit, each having this part of the Invention applied thereto, though it is
not necessary that both these apparatus on board a ship should have the
stopping apparatus applied thereto.
Figure 5 shews a section, and Figure 6 a plan of what is called a deck pipe,
down and up which chain cables pass; and the Drawing shews there to be a
stop made according to the second part of my Invention applied on either side
of such deck pipe, so that on whichever side a chain cable may happen to be
there will be a stop. f is an inclined surface in each stopping apparatus, over
which the successive links of a chain cable will be moved in bringing in the
cable, and as the horizontal links fall into the recess 9; and they will be held
secure, and the chain cannot run out, so long as a horizontal link lies within
the recess g. When it is desired to allow the chain to run out, then the lift-
ing piece h is to be raised by the lever i, or by any convenient means, which
lifting piece h, when raised, offers an inclined plane, over which the chain may
run freely out, for the recess 9 will be filled up by the lifting h. I would
remark, that the stopper apparatus may be used in other positions than those
shewn.
Having thus described the nature of my Invention, and the manner in
which the same is to be performed, I would remark, that I do not confine
myself to the details, so long as the peculiar character of either part of the
Invention be retained; but what I claim is,-
First, the mode of combining the parts a, b, and c, c, on capstan, windlass,
and other barrels used for raising and lowering weights; and,
Secondly, I claim the mode of combining the parts f, g, h, in producing
stopper apparatus of chains used for raising and lowering weights.
In witness whereof, I, the said Thomas Brown, have hereunto set my
hand and seal, this Nineteenth day of October, in the year of our
Lord One thousand eight hundred and forty-seven.
THOMAS (L.B.)* BROWN.

page_text: AND BE IT REMEMBERED, that on the Nineteenth day of October, in
the year
of our Lord 1847, the aforesaid Thomas Brown came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, 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.
AND BE IT REMEMBERED, that on the Nineteenth day of October, in
the year
of our Lord 1847, the aforesaid Thomas Brown came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, 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.
Enrolled the Twentieth day of October, in the year of our Lord One
thousand eight hundred and forty-seven.