CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING
Year: 1860

page_text: LETTERS PATENT to John Ogden, of Manchester, in the County of Lan-
caster, Manufacturer, for the Invention of "CERTAIN IMPROVEMENTS IN
POWER LOOMS FOR WEAVING."
Sealed the 2nd January 1861, and dated the 5th July 1860.
PROVISIONAL SPECIFICATION left by the said John Ogden at the
Office of the Commissioners of Patents, with his Petition, on the
5th July 1860.
I, JOHN OGDEN, of Manchester, in the County of Laneaster, Manufacturer,
do hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS
IN POWER LOOMS FOR WEAVING," to be as follows:-
My Invention relates to the weaving of certain fabries wherein the number
of "picks" to an inch are required to vary to produce a closer or looser fabric
at intervals during the weaving.
The improvement consists in so governing the action of the pawl operating
upon the "taking-up" ratchet wheel that it shall only be in geer with the
wheel to "take up" at certain intervals, so that whilst out of gear the fabric
remains stationary, and is consequently woven closer or thicker. This may be
effected by attaching the pawl to one of the heald levers by a cord or chain, so
that the "jacquard" apparatus or other mechanism for producing designs or
patterns may be caused to operate upon the pawl for the said purpose.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Ogden in the Great Seal Patent Office on the
4th January 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
OGDEN, of Manchester, in the County of Lancaster, Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of July, in the year of our Lord One
thousand eight hundred and sixty, in the twenty-fourth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said John
Ogden, Her special licence that I, the said John Ogden, my executors,
administrators, and assigns, or such others as I, the said John Ogden, 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 "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR
WEAVING," upon the condition, amongst others, that I, the said John Ogden,
by an instrument in writing under my hand and seal, 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 tho
date of the said Letters Patent.
NOW KNOW YE, that I, the said John Ogden, do hereby declare the
nature of my said Invention, and in what manner the samo is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings, that is to say :-
My Invention relates to the weaving of certain fabrics wherein the number
of "picks" to an inch are required to vary to produce a close or loose fabric at
intervals during the weaving.
The improvement consists in so governing the action of the pawl operating
upon the "taking-up" ratchet wheel that it shall only be in gear with or move
the ratchet wheel to take up at certain intervals, so that whilst out of gear or
not moving the ratchet wheel the fabric remains stationary, and is consequently
woven closer or thicker. This may be effected by attaching the pawl to ono
of the heald levers by means of a cord or chain, so that the jacquard or other
mechanism for producing designs or patterns may be caused to operate upon
the pawl for the said purpose.

page_text: In order that the Invention may be better understood and explained in
detail, I have hereunto attached a Sheet of Drawings made upon a scale of
about three inches to a foot illustrative of the same.
Fig. 1 represents a sectional end view of a power loom with my improve-
ment attached, the various parts, excepting such improvement, being ordinary
and well known.
In Fig. 1, a, a, is the ratchet wheel, from which the "taking-up" motion is
imparted to the cloth beam; b and c is the pawl actuating such ratchet wheel
from the "slay sword;" d, e, is a cord or chain passing under the guide
pulleys ff, and connecting the pawl with the heald lever g, so that when the
jacquard or other equivalent apparatus raises the heald lever g, the pawl c is
lifted from the "taking up" ratchet wheel a, and consequently the fabric is
stopped, and the required number of "picks" made before the pawl is again
allowed to act upon the ratchet wheel, by which means it will be evident that
a cloth or fabric of various thicknesses, close or loose, will be woven as required.
The arrangement described is the one I have found most suitable, but it is
evident that the same effect may be produced, either by stopping the vibration
of the pawl c, or by withdrawing the pawl c' from the ratchet wheel at the
required intervals.
Having now described the nature of the said Invention, together with one
method of performing the same, I wish it to be distinctly understood that I
claim so controlling the action of the pawl upon the ratchet wheel, that the
taking up of the fabric shall be stopped at certain required intervals by means
of the apparatus herein described, or any modification thereof for effecting the
same object; the improvement and arrangement I consider most available
having been herein-before described, set forth, and fully illustrated in the
Drawings attached.
In witness whereof, I, the said John Ogden, have hereunto set -my
hand and seal, this Third day of January, in the year of our Lord
One thousand eight hundred and sixty-one.
JOHN OGDEN. (L.B.)