CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING." SPECIFICATION
Year: 1857

page_text: LETTERS PATENT to Joseph Graham and James Shepherd, both of
Burnley, in the County of Lancaster, Machine Makers, and Thomas
Whitaker, of Acrington, in the same County, Manufacturer, for the+
Invention of "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Joseph Graham, James.
Shepherd, and Thomas Whitaker at the Office of the Commissioners
of Patents, with their Petition, on the 10th February 1857.
We, JOSEPH GRAHAM and JAMES SHEPHERD, both of Burnley, in the County
of Lancaster, Machine Makers, and THOMAS WHITAKER, of Acrington, in the
same County, Manufacturer, do hereby declare the nature of our said Inven-
tion for "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING," to be as
follows:-
Our Invention is designed for the purpose of stopping the action of the
loom whenever the shuttle does not enter the "shuttle box," and consists in a
novel arrangement of mechanism by which any of the well-known "stopping'
motions" in which the ordinary "frog" upon the framing is employed may be
actuated. Upon each of the "slay swords" or "arms" is secured a horizontal.
rod, at each end of which is fixed a finger or lever, one projecting horizontally"
towards the "frog" on the framing of the loom, and the other projecting
vertically and bearing against the "swell" in the shuttle box. The "frog "is
.

page_text: furnished with a piece of metal extending in a horizonal direction towards the
horizontal finger or lever, and having a hinge joint formed between it and the
frog." When the shuttle enters the box the "swell " presses the vertical
finger back, and consequently raises the horizontal one; this movement causes
it to rise and escape the projecting piece of the "frog;" but should the shuttle
not complete its "race" nor enter the "box," the "swell" will not press back
the vertical finger, and in consequence of which the horizontal one will not
become raised but will pass under the projecting piece on the "frog" and lift
it, so that it will be struck by the advancing slay, and throwing back the
"frog," will cause the stoppage of the loom.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Graham, James Shepherd, and Thomas Whitaker in
the Great Seal Patent Office on the 8th August 1857.
"TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
GRAHAM and JAMES SHEPHERD, both of Burnley, in the County of Lancaster;
Machine Makers, and THOMAS WHITAKER, of Accrington, in the same County,
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of February, 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 Joseph Graham, James Shepherd, and Thomas Whitaker, Her especial
license that we, the said Joseph Graham, James Shepherd, and Thomas
Whitaker, our executors, administrators, and assigns, or such others as we,
the said Joseph Graham, James Shepherd, and Thomas Whitaker, 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,
an Invention for "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING,"
upon the condition, amongst others, that we, the said Joseph Graham, James
Shephard, and Thomas Whitaker, by an instrument in writing under our
hands and seals, should particularly describe and ascertain the nature of our
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..

page_text: NOW KNOW YE, that we, the said Joseph Graham, James Shephard, and
Thomas Whitaker, 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 statements and accompanying Drawings,
that is to say:-
Our Invention is designed for the purpose of stopping the action of the.
loom whenever the shuttle does not enter the "shuttle box," and consists in a.
novel arrangement of mechanism by which any of the well-known "stoping
motions," in connection with which the ordinary "frog" upon the framing is
employed, may be actuated. Upon each of the "slay swords" or arms is secured
a horizontal rod, at each end of which is fixed a finger or lever, one projecting
horizontally towards the "frog" on the framing of the loom, and the other
projecting vertically and bearing against the "swell" in the "shuttle box."
The frog is furnished with a metal tongue, extending in a horizontal direction
towards the horizontal finger or lever, and having a hinge joint or pivot
formed between it and the "frog." When the shuttle enters the box the
"swell" presses the vertical finger back; and consequently raises the horizontal.
one; this movement causes it to rise and escape the projecting piece on the
pivot of the metal tongue; but should the shuttle not complete its "race" nor
enter the box the "swell" will not press back the vertical finger, and in con-
sequence of which the horizontal one will not become raised, but will come
in contact with the projecting piece on the pivot of the metal tongue and lift
it, so that it will be struck by the advancing slay, and throwing back the sliding
"frog" will effect the stoppage of the loom.
"
In order that our Invention may be more clearly understood and explained
in detail, we have hereunto annexed a Sheet of Drawings, made about half the
real size, and having: similar letters of reference marked upon corresponding
parts of the mechanism in all the Figures.
Fig. 1.is a side view of that part of the loom to which our improvements
are applied, shewing the vertical and horizontal levers secured upon the hori-
zontal rod, and also the projecting finger upon the sliding frog; Fig. 2 is a
plan view of the same. In Fig. 1, a, a, is the portion of the framing upon
which is the sliding frog b; and d is the slay sword, in which is secured the
horizontal rod c. Upon the rod is the vertical lever f, which is in communi-
cation with the "swell " g in the shuttle box, and the horizontal lever h,
employed to strike the vertical portion of the lever i, which is secured upon
the pivot of the metal tongue 1, and which acts against the fixed frog m
upon the slay sword. n is the spring handle upon which the frog acts to effect
the stoppage of the loom. Supposing the loom to be put in motion and the

page_text: shuttle to enter the box without interruption, the "swell" will become pressed
outwards and force back the vertical lever f; this will cause the horizontal
lever to rise, and escape or pass over the vertical part of the lever i, and
thus allow the horizontal. lever' to remain inactive and the motion of the
loom to proceed; but in the instance of the shuttle not completing its race and
not entering the box, the lever f, not being pressed outwards by the shuttle
acting upon the swell, will. allow the horizontal lever h to remain motionless,
and as the slay advances to strike the vertical portion of the 'lever i, and
thereby raise the extremity of the finger 1, which will be struck by the fixed
frog m upon the slay sword, and carrying or forcing the sliding frog b back,
will cause it to come in contact with the spring hand n, and thus transfer the
driving strap from the fast to the loose pulley and stop the loom.
Having now described the nature of our said Invention, together with the
manner of performing the same, we wish it to be understood that we claim
the general construction and arrangement of the apparatus described, and the
application thereof to power looms, more particularly the employment and use
of the lever and its connections, which remain inactive during the proper'
working of the loom, and also the fixed frog m upon the slay sword being
only brought into action when required to affect the stoppage of the loom, as
herein-before described, set forth, and fully exhibited and detailed in the
Drawings annexed.
In witness whereof, we, the said Joseph Graham, James Shepherd, and
Thomas Whitaker, have hereunto set our hands and seals, this Sixth
day of August, in the year of our Lord One thousand eight hundred
and fifty-seven.
JOSEPH GRAHAM.
(L.S.)
JAMES SHEPHERD.
(L.S.)
THOMAS WHITAKER. (L.S.)