CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING
Year: 1857

page_text: LETTERS PATENT to George Scarr, of Burnley, in the County of Lan-
caster, Ironfounder, and James Pollard, of the same Place, Mechanic,
for the Invention of "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR
WEAVING."
PROVISIONAL SPECIFICATION left by the said George Scarr and James
Pollard at the Office of the Commissioners of Patents, with their
Petition, on the 23rd April 1857.
We, GEORGE SCARR, of Burnley, in the County of Lancaster, Ironfounder,
and JAMES POLLARD, of the same Place, Mechanic, do hereby declare the
nature of our said Invention for "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR
WEAVING," to be as follows:-
Our Invention consists in the novel application and use of a link and catch
so arranged that they shall cause either a permanent or a broken connection
between the crank arm and the "slay" of the loom; one end of the said link is
attached to the slay arm, and allowed to swivel in the same, and the other end
(through the medium of the catch) forms the joint for connecting the crank
arm to the slay; this link is securely kept in its place so long as the shuttle
completes its throw or race from box to box by means of the catch resting
upon the link. If the shuttle does not complete its throw, the said catch is
lifted or raised from the link joint by means of a finger underneath, worked
from the "stop rod" of the loom, the said stop rod being in connection with

page_text: the "swell" of the shuttle box, so that when the shuttle does not complete
its throw, the "swell" remains inactive, thereby bringing the finger on the
stop rod in contact, and lifts the catch off the link when the next pick is
required, consequently causing the crank arm to push back the link joint, and
allow the crank to complete its revolution. The link joint is kept from falling
back in that portion of the throw when the loom is not picking by means of
slight springs attached to the slay arm, and pressing against the link.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Scarr and James Pollard in the Great Seal Patent
Office, on the 22nd October 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GEORGE
SCARR, of Burnley, in the County of Lancaster, Ironfounder, and JAMES
POLLARD, of the same Place, Mechanic, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of April, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said George Scarr and James Pollard, Her especial license that we, the
said George Scarr and James Pollard, our executors, administrators, and
assigns, or such others as we, the said George Scarr and James Pollard,
our exccutors, 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 we, the said
George Scarr and James Pollard, by an instrument in writing under our
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.
NOW KNOW YE, that we, the said George Scarr and James Pollard, do
hereby declare the nature of our 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:→
Our Invention consists in the novel application and use of a link and catch.

page_text: so arranged that they shall cause either a permanent or a broken connection
between the crank arm and the slay of the loom; one end of the said link is
attached to the slay arm, and allowed to swivel in the same, and the other end
(through the medium of the catch) forms the joint for connecting the crank
arm to the slay; this link is securely kept in its place so long as the shuttle
completes its throw or race from box to box by means of the catch resting
upon the link. If the shuttle does not complete its race, the said catch is
lifted or raised from the link joint by means of a finger underneath, worked
from the "stop rod" of the loom, the said "stop rod" being in connection.
with the "swell" of the shuttle box, so that when the shuttle does not com-
plete its throw, the "swell" remains inactive, thereby bringing the finger
on the stop rod in contact, and lifts the catch off the link when the next pick
is required, consequently causing the crank arm to push back the link joint,
and allow the crank to complete its revolution. The link joint is kept from
falling back in that portion of the throw when the loom is not picking by
means of a slight spring attached to the slay arm, and pressing against the
link.
In order that the Invention may be better understood and explained in
detail, we have hereunto attached a Sheet of Drawings made upon a scale of
about four inches to a foot, similar letters of reference being marked upon
corresponding parts of the apparatus in both the Figures.
Fig. 1 is an end view of the slay sword and shuttle box, being that portion
of the loom to which the improvement is applied; and Fig. 2 is view of the
back part of the slay, shewing the connection between the stop rod and the
connecting link. In Fig. 1, a is the slay sword, and 6, the shuttle box, in
which is the ordinary "swell," against which the finger c presses; d is the
stop rod, upon which is placed the finger e, supporting the bent or cranked
finger e', which is connected to the link f; g is a slot in the slay sword, to allow
of the continued revolution of the crank and action of the crank arm h. The
action of the various parts is as follows:-When the shuttle is impelled across
the loom and reaches the opposite box, the entry of the shuttle will cause
the "swell" to press the finger c outwards, and thus depress the finger c, and
allow the link to fall into connection with the crank arm h, and thus form a
permanent connecting joint between the slay sword and crank arm during the
"beat-up," and such connection is rendered permanent during the proper
action of the "picking motion," by causing the finger e to pass beneath a stud
or bowl to keep the link and crank arm in connection; but in the event of the
shuttle not entering the box, the swell will remain inactive, and allow the
finger c to fall inwards, and thus raise the finger c, and lift the link f from

page_text: the crank arm, and thus breaking the connection allow the crank arm to
continue its action in the slot g, the slay sword and slay being motionless and
unaffected by the action of the crank...
Having now described the nature of our said Invention, together with the
manner of performing the same, we wish it to be distinctly understood that
we claim the novel application, employment, and use of the link f, and its
mechanism attached, in connection with the stop rod and "swell," forming a
permanent or broken connection between the crank arm and slay sword
according to the action of the shuttle, together with the general arrangement
of the apparatus employed.
In witness whereof, we, the said George Scarr and James Pollard, have
hereunto set our hands and seals, this Twenty-first day of October,
in the year of our Lord One thousand eight hundred and fifty-seven.