IMPROVEMENTS IN OPERATING THE WARPS IN THE PRODUCTION OF CROSS WEAVING BY POWER
Year: 1871

page_text: LETTERS PATENT to Thomas Helliwell, of Buttershaw, North Bierley,
near Bradford, in the County of York, Overlooker to Messrs.
Samuel Bottomley Brothers, of the said Buttershaw, for the Inven-
tion of "IMPROVEMENTS IN OPERATING THE WARPS IN THE PRODUCTION OF
CROSS WEAVING BY POWER."
Scaled the 12th January 1872, and dated the 18th July 1871.
PROVISIONAL SPECIFICATION left by the said Thomas Helliwell at
the Office of the Commissioners of Patents, with his Petition, on
the 18th July 1871.
I, THOMAS HELLIWELL, of Buttershaw, North Bierley, near Bradford,
in the County of York, Overlooker to Messrs. Samuel Bottomley
Brothers, of the said Buttershaw, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN OPERATING THE WARPS IN THE PRO-
DUCTION OF CROSS WEAVING BY POWER," to be as follows:-
The object of the improvements is to obtain ease to the warp threads
in the manufacture of cross weaving by power. For this purpose
I employ the ordinary doup healds and a pair of shedding healds. One
of these shedding healds acts to form the upper half of the shed and

page_text: the other the lower half thereof when operating for the plain or
uncrossed shed.
But in carrying out the improvements the tappet for operating the
heald that operates the lower half of the shed operates to ease the part
of the warp operated thereby, by raising it into or nearly into a middle
position after the opening of a shed, whereby the strain being relieved
from those warp threads they are far less liable to breakage in the
weaving.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Helliwell in the Great Seal Patent Office
on the 16th January 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
HELLIWELL, of Buttershaw, North Bierley, near Bradford, in the County
of York, Overlooker to Messrs. Samuel Bottomley Brothers, of the said
Buttershaw, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of July, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Thomas Helliwell, Her special licence
that I, the said Thomas Helliwell, my executors, dministrators, and
assigns, or such others as I, the said Thomas Helliwell, 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, excercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
OPERATING THE WARPS IN THE PRODUCTION OF CROSS WEAVING BY POWER,"
upon the condition (amongst others) that I, the said Thomas Helliwell,
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 imme-
diately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Thomas Helliwell, 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 :-
The object of the Invention is to facilitate the production of cross
weaving in looms worked by power, and this object I attain by giving
case to the warp threads at certain times in the manufacture of such
weaving.
The looms for the production of the cross weaving according to my
Invention are each provided with the ordinary doup healds and with
a pair of shedding healds. One of these shedding healds acts upon one
part of the warp threads to form at one time the upper half of the shed
whilst the other shedding heald acts upon the other part of the warp
threads to form the lower half of the shed when operating for the
production of the plain or uncrossed shed.
But in carrying out my improvements the tappet or tappets employed
to give the requisite motion to the parts working the lower half of the
shed operate on those parts so as to case the warp threads operated
thereby, by raising them into or nearly into a horizontal or middle
position after the opening of each shed, whereby the strain being
releived from those warps their liability to breakage in weaving is
diminished.
Having thus described my Invention, and means by which the same
may be carried into effect, I would have it understood that what I
claim is, the arranging parts for operating the warp throads in the
production of cross weaving in looms worked by power that case may
be given to such warp threads after the opening of shed.
In witness whereof, I, the said Thomas Helliwell, have hereunto
set my hand and scal, this Twelfth day of January, in the year
of our Lord One thousand eight hundred and seventy-two.
THOMAS HELLIWELL. (L.S.)