IMPROVEMENTS IN LOOMS FOR " FOR WEAVING AND IN APPARATUS CONNECTED THEREWITH
Year: 1874

page_text: LETTERS PATENT to John Keighley, Plumber, of Bradford, in the
County of York, for the Invention of "IMPROVEMENTS IN LOOMS FOR
"
PROVISIONAL SPECIFICATION left by the said John Keighley at
the Office of the Commissioners of Patents, with his Petition, on
the 24th August 1874.
I, JOHN KEIGHLEY, Plumber, of Bradford, in the County of York,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN LOOMS FOR WEAVING AND IN APPARATUS CONNECTED THEREWITH," to be as
follows, that is to say:
-
My Invention relates to employing a friction flange fitted on the warp
beam of a loom, on which flange acts a metal break formed of links
acted on by gear giving an equal pressure on the friction flange, for
the purpose of delivering the warps at any required tension or pressure,
producing an even fabric and preventing the warps from twisting and
stretching.

page_text: To carry out my Invention I employ a cast-iron flange, having three
clams to adjust it to a warp beam. On the flange works a metal break
formed with links to press equally on the top or partly round the flange,
producing an equal pressure or tension. In the back link of the break
is fitted the short arm of a bell-crank lever. The long arm of this lever
works in a slot hole formed in a link or connecting piece, and on the
lower end of this connecting piece is fitted by means of a stud the short
arm of another bell-crank lever, the long arm of this lever having a
connecting rod fitted to it, to which is attached the short arm of a T lever,
the long arm thereof being made with notches, on which is placed a
moveable weight. The T lever is fitted on a bracket bolted to the centre
part of the low rail of the loom.
I also employ a self-acting gearing for taking off the pressure or
tension of the warps as the weaving operation takes place. For this
purpose I employ a moveable weight fitted on an endless chain. This
chain works in small V pulleys, one of which is fitted on the end of the
T lever, and the other is fitted near the centre of the loom. These small
V pulleys are actuated by a small pulley put in motion by a rack acted
on by means of a lever having a wooden ball which works on the under
side of the warps on the warp beam. As the warps become less by
being wound off by the action of weaving the ball forces the lever to
which it is attached to move forward, working the rack, consequently
turning the pinion working the endless chain, and bringing forward the
weight on the T lever, reducing the weight, and taking off the pressure
or tension of the warps as the weaving operation takes place.
1
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Keighley in the Great Seal Patent Office
on the 24th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
KEIGHLEY, Plumber, of Bradford, in the County of York, send 30
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of August, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-

page_text: eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Keighley, Her special licence
that I, the said John Keighley, my executors, administrators, and
assigns, or such others as I, the said John Keighley, my executors,
3 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 LOOMS FOR WEAVING AND IN APPARATUS CONNECTED THERE WITH," upon the
condition (amongst others) that I, the said John Keighley, 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
5 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 John Keighley, 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, reference being had to the Drawing hereto
annexed, and to the figures and letters marked thereon, that is to
say :-
The said Invention relates to employing a friction flange fitted on the
6 warp beam of a loom, on which flange acts a metal break formed of
links acted on by gear giving an equal pressure on the friction flange,
for the purpose of delivering the warps at any required tension or
pressure, producing an even fabric and preventing the warps from
twisting and stretching.
To carry out my Invention I employ a cast-iron flange, having three
clams to adjust it to a warp beam. On the flange works a metal break
formed with links to press equally on the top or partly round the flange,
producing an equal pressure or tension. In the front link of the break
is fitted a lever having a slot hole, working on a connecting link or short
lever, and on which is fitted another lever connected to a long lever.
On the end of this long lever is fitted a link or short lever connected to
a long lever made with notches, and on which is placed a moveable

page_text: or lever O, which fits in an opening P formed on the lever Q. This
lever works on a stud R formed on the bearer S bolted to the loom frame,
and on the end of the lever Q is fitted a link or lever T, which is passed
through a slot opening U, and secured by a stud to the long lever V, on
which is placed a moveable weight W. This weight is secured in the
required position by a set screw X, which fits in recesses Y cast in the
lever V. This lever works on a stud formed on a bracket Z bolted to
the bottom spur rail A¹.
When the warps have been put on the warp beam the weight W is
placed in the required position to deliver the warps at the required
tension or pressure. The weight pulls down the lever V, bringing with
it the lever Q, connecting link or lever O, pressing down the short
levers Land K, thereby pressing the links G of the metal break on the
top of the flange A, so as to produce an even tension or pressure,
prevent the warps from twisting or stretching, and produce an even
fabric.
For broad looms I employ similar metal breaks to those herein-before
described fitted on each end of the warp beam. The links or levers O
work in bell-crank levers B', fitted on studs C¹ fixed in brackets D' bolted
to the spur rail A' of the loom. The bell-crank levers B₁ are connected
to a T weighted lever E' by means of connecting rods F¹. The T lever
works on a stud G¹ fitted or formed on a bracket H¹ bolted to the spur
rail A'.
The weight W can be used as herein-before described, or can have a
sliding slow motion to take off the pressure of the warps as they are
delivered. For this purpose a wooden roller I¹ (or a ball) is employed
fitted in a bracket J', having a lug K' passed and fitted in an opening
formed on a lever L¹ fitted on a stud fixed in a bracket M' bolted to the
spur rail A'. On this stud is fitted another lever N', to which is attached
a chain or rope O³, which is passed over a pulley P¹ fitted in the end Q₁
of the weight W. The lever N¹ has a bent lever R¹³, on which is placed
a moveable weight S' to keep the wooden roller or ball always pressed on
the warps T. As the warps are wound off by the weaving the wooden
roller or ball I rises, lifting the lever L and forcing the lever N' forward,
bringing with it the weight W, reducing the weight of the lever E¹, and
taking off the pressure or tension of the warps as the weaving operation
takes place,

page_text: Having thus described my improvements and the best means I am
acquainted with for carrying the same into effect, I would have it under-
stood that I do not confine myself to the precise details shewn and
described as they may be varied without departing from the peculiar
character of the Invention, but what I do claim is,—
Firstly. The general arrangement and construction of the apparatus,
substantially as herein-before described and represented in the accom-
panying Drawing..
Secondly. The employment of metal breaks formed with links working
on flanges fitted on the warp beam ends, substantially as described and
represented in the accompanying Drawing.
.
Thirdly. The employment of a T lever acting on bell-crank levers,
also of the self-acting gear for reducing the weight and taking off the
pressure or tension of the warps as the weaving operation takes place,
substantially as herein-before described and represented in the Drawing
annexed.
In witness whereof, I, the said John Keighley, have hereunto
set my hand and seal, this Twenty-third day of February, in
the year of our Lord One thousand eight hundred and seventy-
five.
Witness,
WALTER JAS. TURNER, C.E.,
Patent Agent,
Bradford.
JOHN KEIGHLEY. (L.S.)