IMPROVEMENTS IN THE WEIT FORK MOTION USED IN LOOMS FOR WEAVING
Year: 1871

page_text: LETTERS PATENT to James Taylor and Albert Clegg, both of Haugh,
and James Taylor, of New Hey, all in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN THE WEIT FORK MOTION USED
IN LOOMS FOR WEAVING.”
PROVISIONAL SPECIFICATION left by the said James Taylor, Albert
Clegg, and James Taylor at the Office of the Commissioners of
Patents, with their Petition, on the 29th September 1871.
We, JAMES TAYLOR and ALBERT CLEGG, both of Haugh, and JAMES
TAYLOR, of New Hey, all in the County of Lancaster, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE WEIT FORK
MOTION USED IN LOOMS FOR WEAVING," to be as follows:-
"
These improvements apply principally to power looms such as are
employed for weaving woollen cloth, and relate to what is known as the

page_text: "weft fork motion," which is used in such looms for the purpose of
stopping the motion of the loom instantly whenever the weft thread
breaks, or from any other cause is absent from the shed.
We employ a weſt fork similar to that in ordinary use in such looms,
which fork is raised by the weft, and withdraws a stop bolt every
time the loom beats up, but instead of placing such stop bolt inside the
frame and causing it to act against a bracket or lever fixed to the lower
side of the crank arm as usual, which is a frequent cause of breakage,
we place the stop bolt outside the frame of the loom, and immediately
below the fly wheel, and to the rim of the latter we fix a stop piece,
which acts against the stop bolt whenever it is not withdrawn by the
weft.
The stop bolt works vertically through a square hole in a sliding bar,
which is connected to the stop rod of the loom, so that, whenever from
the absence of the weft the stop bolt is left projecting, the stop piece on
the fly wheel coming into contact with the said bolt causes the sliding
bar to throw off the driving strap and stops the loom.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 20
filed by the said James Taylor, Albert Clegg, and James Taylor,
.
in the Great Seal Patent Office on the 28th March 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
TAYLOR and ALBERT OLEGG, both of Haugh, and JAMES TAYLOR, of
20
New Hey, all in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of September, 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

page_text: successors, give and grant unto us, the said James Taylor, Albert
Clegg, and James Taylor, Her special license that we, the said James
Taylor, Albert Olegg, and James Taylor, our executors, administrators,
and assigns, or such others as we, the said James Taylor, Albert Clegg,
5 and James Taylor, our 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,
O an Invention for “IMPROVEMENTS IN LOOMS FOR WEAVING," upon the condition
(amongst others) that we, the said James Taylor, Albert Clegg, and
James Taylor, our executors or administrators, by an instrument in
writing under our, or one of our or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
5 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 we, the said James Taylor, Albert Clegg, and
O James Taylor, 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 and accompanying
Drawings (that is to say) :—
These improvements apply principally to power looms, such as are
5 employed for weaving woollen cloth, and relate to what is known as the
"weft fork motion," which is used in such looms for the purpose of
stopping the motion of the loom instantly whenever the weft thread
breaks, or from any other cause is absent from the “shed."
We employ a weft fork similar to that in ordinary use in such looms,
) which fork is raised by the weft and withdraws a catch, so as to release
a stop bolt every time the loom beats up, but instead of placing such
stop bolt inside the frame and causing it to act against a bracket or lever
fixed to the lower side of the crank arm as usual, which is a frequent
cause of breakage, we place the stop bolt outside the frame of the loom
3 and immediately below the fly wheel, and to the rim of the latter we
fix a stop piece, which acts against the stop bolt whenever it is not

page_text: withdrawn by the action of the weft on the fork. The stop bolt works
vertically through a square hole in a sliding bar, which is connected to
the stop rod of the loom, so that whenever from the absence of the weft
the stop bolt is left projecting, the stop picce on the fly. wheel coming
into contact with the said bolt causes the sliding bar to throw off the 5
driving strap and stops the loom.

page_text: of the loom (see also plan view Fig. 4); u, u, is a spiral spring for
returning the sliding bar q, q, to its original position; v, v, is a stop
piece fixed to the fly wheel w, w; and z, z, is a spiral spring for raising
the bar 1, 1, as soon as the finger m is released from the pin n.
The action of the apparatus is as follows:-At each revolution of the
crank the pin n depresses the bar 2, 1, by means of the finger m. This
has a twofold effect; it raises the stop bolt p, p, and it also raises
the rod i, i, until its notch is above the catch. If the weft is in its
place however the fork rests upon it as shown in Fig. 1, and the catch
) does not fall into the notch; then as soon as the pin n has passed the
finger m the spiral spring draws down the rod i and the stop bolt p
into the position shown in Fig. 1, out of the way of the stop piece on
the fly wheel w, and the loom continues in action; but should the weft
thread break or from other cause be absent from the shed, then
5 catch at the rear end of the weft fork & falls into the notch of the
rod i, as seen at Fig: 2, and prevents the spring from withdrawing the
stop bolt p; the stop piece on the fly wheel w then comes into contact
with the bolt p and causes it to draw back the sliding bar q, and by
means of the wire and levers to pull the spring handle out of its
) notch, and thus stop the loom and throw off the driving strap simul-
taneously. When the weaver starts the loom again, by placing the
spring handle again in its notch, the spring & returns the sliding bar q
and stop bolt p into their original position.

page_text: tion thereof constructed, and operating in substantially the same or a
similar manner.
In witness whereof, I, the said James Taylor, (of New Hey, on
behalf of myself and the said James Taylor and Albert Olegg,
of Haugh,) have hereunto set my hand and seal, this Twenty- 5
sixth day of March, in the year of our Lord One thousand eight
hundred and seventy-two.
.
Witnessed by
GEORGE DAVIES, C.E.,
Patent Agent,
Manchester.
JAMES TAYLOR. (L.S.)