IMPROVEMENTS IN SCREW-GILLS FOR PREPARING WOOL AND OTHER FIBROUS
Year: 1857

page_text: LETTERS PATENT to William Hargreaves, of Bradford, in the West
Riding of the County of York, Machine Wool Comber, for the Invention
of "IMPROVEMENTS IN SCREW-GILLS FOR PREPARING WOOL AND OTHER FIBROUS
Sealed the 23rd February 1858, and dated the 26th August 1857.
PROVISIONAL SPECIFICATION left by the said William Hargreaves at
the Office of the Commissioners of Patents, with his Petition, on the
26th August 1857.
I, WILLIAM HARGREAVES, of Bradford, in the West Riding of the County
of York, Machine Wool Comber, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN SCREW-GILLS FOR PREPARING WOOL AND OTHER
FIBROUS SUBSTANCES," to be as follows:-
My improvements consist of a flat boiler fixed between the top and bottom
fallers of the screw gills which is to be heated by steam or hot water; the above
boiler also acts as a saddle for the gills or fallers to slide upon; it also gives
out a great amount of heating surface to the gills or fallers, which makes the
wool and other fibrous substances to work more kindly when passing through
the gills or fallers. I also use in my improvements porcupines heated with
steam or hot water instead of the ordinary fluted feed rollers for feeding the
gills or fallers with, which gives a great ease to the gills or fallers at the time
they are lashing the wool or other fibrous substances. By the use of the flat
boiler I dispence with the use of gas all together, and get a greater amount
of heat on the gills or fallers at a less cost than by using gas to heat them
with.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Hargreaves in the Great Seal Patent Office on the
24th February 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HARGREAVES, of Bradford, in the West Riding of the County of York, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of August, in the year of our
Lord One thousand eight hundred and fifty-seven, in the twentieth year of
Her reign did, for Herself, Her heirs and successors, give and grant unto me,
the said William Hargreaves, Her special licence that I, the said William
Hargreaves, my executors, administrators, and assigns, or such others as J,
the said William Hargreaves, 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 "IMPROVEMENTS IN SCREW-GILLS FOR PREPARING WOOL AND OTHER FIBROUS
SUBSTANCES," upon the condition (amongst others) that I, the said William
Hargreaves, 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.
NOW KNOW YE, that I, the said William Hargreaves, 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 thereof, that is to say:-
My improvements consist of a flat boiler fixed between the top and
bottam fallers of the screw gills, which is to be heated by steam or hot water;
the above boiler also acts as a saddle for the gills or fallers to slide upon; it
also gives out a great amount of heating surface to the gills or fallers, which
makes the wool and other fibrous substances to work more kindly when
passing through the gills or fallers. Also, I use in my improvements porcupines
heated with steam or hot water instead of the ordinary fluted feed rollers for
feeding the gills or fallers with, which gives a great ease to the gills or fallers
at the time they are lashing the wool or other fibrous substances. By the use

page_text: of the flat boiler, I dispense with the use of gas altogether, and gets a greater
amount of heat on the gills or fallers. Also I use in my Improvements, two
horizontal shafts placed under the lower tier of the fallers, with two cams or
fingers in the form of a Ċ attached to the shaft for raising and lowering the
fallers. By the use of the two shafts with the cams or fingers attached to
them, I dispense with the noise of the fallers, and save a great amount of
wear and tear in the cams attached to the screw shaft, than what is done
a is the boiler in plan A and B; b the cam or finger in the form of a C ;
c, c, are two horizontal shafts placed at right angles under the lower tier of
the fallers, with the cams or fingers attached to them; d, d, in plan C are
porcupines heated by steam or hot water; e in plan A is an endless cloth
roller for feeding the porcupine; f is the steam or hot-water piping for heating
the boiler and porcupines. The plan D shows more distinctly the two hori-
zontal shafts placed at right angles under the lower tier of the fallers, with
the cams or fingers attached thereto, which shows the fallers placed across
the top of them, in a position just going to be raised; the plan E shows them
again in a position just going to be lowered.
Having thus fully described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I would have it dis-
tinctly understood, that I do not confine myself to the precise details herein
set forth; but what I claim as my Invention, and which I believe to be new
within the realm, are the boiler and the porcupines heated by steam or hot
water. Also, the two horizontal shafts with the cams or fingers attached thereto,
for raising and lowering the fallers, as herein described, and illustrated in
the accompanying Sheet of Drawings, or any modification thereof.
In witness whereof, I, the said William Hargreaves, have hereunto set
my hand and seal, this Twenty-third day of February, in the year
of our Lord One thousand eight hundred and fifty-eight.
WILLIAM HARGREAVES. (L.S.)