CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1873

page_text: LETTERS PATENT to William Smith, of the Sun Foundry, Heywood, in
the County of Lancaster, Machine Maker, for the Invention of
"CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING."
66
CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING.”
PROVISIONAL SPECIFICATION left by the said William Smith at the
Office of the Commissioners of Patents, with his Petition, on the
19th November 1873.
I, WILLIAM SMITH, of the Sun Foundry, Heywood, in the County of
Lancaster, Machine Maker, do hereby declare the nature of the said
Invention for " CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING," to be as
follows:-
My Invention is applicable to the picking motion, and it consists in
an improved arrangement of the parts by which the picking shafts at the
sides of the loom are acted upon alternately.
In performing my Invention I attach the double scrolls to the fly
wheels on the crank shaft instead of fixing them to the frame ends as

page_text: usual, and the picking studs are fixed to the fly wheels whereas they are
usually attached to sliding plates, these picking studs act on a finger
hinged to each picking shaft, and these fingers are lifted alternately out
of reach of the picking studs by elbow levers hinged to the loom sides,
the curved key for each double scroll being jointed to one of the arms
of the said elbow levers. By this arrangement the parts are more solid
and durable than those made in the ordinary manner.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Smith in the Great Seal Patent Office on
the 15th May 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
SMITH, of the Sun Foundry, Heywood, in the County of Lancaster,
Machine Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of November, in the year
of our Lord One thousand eight hundred and seventy-three, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Smith, Her special licence that I,
the said William Smith, my executors, administrators, and assigns, or such
others as I, the said William Smith, 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 LOOMS FOR WEAVING,"
upon the condition (amongst others) that I, the said William Smith, 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.
NOW KNOW YE, that I, the said William Smith, do hereby declare the
nature of my said Invention, and in what manner the same is to be
C

page_text: performed, to be particularly described and ascertained in and by the
following statement (that is to say) :-
My Invention is applicable to the picking motion, and it consists in
an improved arrangement of the parts by which the picking shafts at the
sides of the loom are acted upon alternately.
In performing my Invention I attach the double scrolls to the fly
wheels on the crank shaft instead of fixing them to the frame ends as
usual, and the picking studs are fixed to the fly wheels whereas they are
usually attached to sliding plates; these picking studs act on a finger
hinged to each picking shaft, and these fingers are lifted alternately out
of reach of the picking studs by elbow levers hinged to the loom sides,
the curved key for each double scroll being jointed to one of the arms of
the said elbow levers. By this arrangement the parts are more solid and
durable than those made in the ordinary manner.
And in order that my Invention may be fully understood and readily
carried carried into operation, I will proceed to describe the accom-
panying Sheet of Drawings, reference being had to the figures and
letters marked thereon:-
Fig. 1 is an end view, and Fig. 2 a front view of the principal parts of
an ordinary power loom to which my improvements are applied; a is
the crank shaft; b, the fly wheels, and c the picking shafts; d, d, are the
double scrolls which are fixed to the crank shaft or to the fly wheels,
instead of being fixed to the frame ends as heretofore customary; b¹, b¹,
are the picking studs fixed to the fly wheels instead of being fixed to
sliding plates as before. The picking studs 6¹ act on fingers c¹ hinged to
the picking shafts, and these fingers are lifted alternately out of reach of
the picking studs by the elbow levers e, e, which are hinged to the loom
sides. The curved keys f for the double scrolls are jointed to one arm of
each elbow lever, and consequently as the crank shaft revolves the elbow
levers vibrate on their fulcrum studs.
On referring to Fig. 2 it will be seen that the picking stud 6¹ of the
left hand fly wheel b is passing clear under the finger c¹ of the left hand
picking shaft c, and that the right hand finger c¹ is down and in position
for being acted upon by the picking stud 6¹ of the right hand fly wheel.
As soon as the right hand picking stud has acted on the finger of the
right hand picking shaft to throw the shuttle from the right to the left
hand side of the loom the double scroll at the left hand side acting on

page_text: the elbow lever e lowers the left hand finger o¹ into position for being
acted upon by the left hand stud 6' at the next revolution of the fly
wheel shaft. By this improved arrangement the picking shafts are
acted upon alternately. as before, but the parts are more solid and
durable, and less liable to get out of repair than those made in the
ordinary manner.
Having thus stated the nature of my Invention and described the
manner of performing the same, I declare that I claim the improved
arrangement and position of the parts forming the picking motion of
looms for weaving, as shewn and described.
In witness whereof, I, the said William Smith, have hereto set
my hand and seal, this Fourteenth day of May, One thousand
eight hundred and seventy-four.
]