IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1866

page_text: LETTERS PATENT to John Keighley, of Bradford, in the County of
York, Power Loom Maker, for the Invention of "IMPROVEMENTS IN LOOMS
FOR WEAVING."
Sealed the 26th April 1867, and dated the 31st October 1866.
PROVISIONAL SPECIFICATION left by the said John Keighley at
the Office of the Commissioners of Patents, with his Petition, on t
31st October 1866.
the
I, JOHN KEIGHLEY, of Bradford, in the County of York, Power Loom
Maker do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN LOOMS FOR WEAVING," to be as follows:-
This Invention relates, firstly, to means of working or operating rotary
change shuttle boxes in that class of looms technically known as "pick-and-
pick" looms, or those where the shuttle is or may be required to be changed
at every pick, and for which purpose a set of boxes are employed at each end
of the loom. Heretofore in the working of these boxes the two sets have
either been operated by separate jacquard or other indicating apparatus or by
a cross shaft and gearing at each end connecting them together, which means
are cumbrous and also expensive in construction and in the working thereof. !
Now my improvements consist in the application of a double-cranked rod
or rocking shaft with a crank at each end extending across the loom so
placed and arranged that when the jacquard peg legs or other usual indicating

page_text: apparatus actuates the hook or catch which is connected with a turning lever
at one end of the loom for turning or operating one set of boxes, it also
actuates this cranked rod at one end when the crank at the other end acts
upon the hook or catch which connects the turning lever at the opposite end
of the loom, and thus the two sets of boxes are operated simultaneously by
one jacquard peg leg or other indicating apparatus.
Secondly, this Invention relates to the method of constructing rotary
shuttle boxes, which hitherto have been made chiefly of, wood built up or put
together in parts, and which are very liable to warp and get out of order, requiring
frequent repairs. Now my improvement consists in having each set of rotary
boxes made of metal, by preference in one casting, and suitably fitted up by
usual means.
SPECIFICATION. in pursuance of the conditions of the Letters Patent, filed
by the said John Keighley in the Great Seal Patent Office on the
29th April 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
KEIGHLEY, of Bradford, in the County of York, Power Loom Maker, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of October, in the year of our Lord
One thousand eight hüindred "and sixty-six, in the thirtieth 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, administrators, and, assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVE-
MENTS IN LOOMS FOR WEAVING," 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 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.
14
อ ปป .

page_text: arrangement of hookers, levers, catches, and apparatus, is only applicable for
working one set of boxes or the boxes of one end of the loom unless the
boxes at both ends are connected by shaft and gearing or by the use of an
additional turning lever, catches, levers, and hookers, and jacquard or other
indicating apparatus. Instead of the latter I apply shafts H and I extending
across the loom having levers H and I' fixed, thereon at one end which are
acted upon by the catches D and D', and at the other ends of these shafts are
'fixed levers J and J¹ which act upon corresponding catches attached to the levers
carrying the hookers at the opposite end of the loom, whereby the said catches
are caused to take on to the turning lever at that end in like manner as do
'the catches D and D', so that motion is given to both sets of boxes or to the
boxes at both ends of the loom simultaneously as required by one jacquard or
other indicating apparatus..
The method of performing the second part of my. Invention, or con-
structing rotary shuttle boxes, of metal, whether by casting in one or more
parts, or by fitting them up in several parts of wrought. metal, will be easily
understood by all practical mechanics or loom makers without reference to any
Drawings in illustration thereof..
Having thus described the nature of my said Invention, and shewn the
manner in which it is to be or may be performed or carried into practical
operation, I would remark in conclusion that I do not confine or restrict myself
to the precise details in the construction or arrangement of the parts or
apparatus shewn and described, but what I claim as of my Invention is,―
Firstly, the application and use of a double-cranked rod (or mechanical
equivalent) to form a medium for communicating the motion or action of a
catch on one side of the loom to the corresponding catch on the other
side, whereby both sets of rotary change shuttle boxes may be operated
simultaneously.
Secondly, the constructing and using of metal rotary change shuttle boxes
in looms for weaving.
In witness whereof, I, the said John. Keighley, have hereunto set my
hand and seal, this Twenty-sixth-day of April, One thousand eight
hundred and sixty-seven.