IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1879

page_text: LETTERS PATENT to John Ainsworth and Henry Ainsworth, of Preston, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN LOOMS FOR
WEAVING
"1
Sealed the 24th October 1879, and dated the 30th April 1879.
PROVISIONAL SPECIFICATION left by the said John Ainsworth and Henry
Ainsworth at the Office of the Commissioners of Patents on the 30th April
1879.
JOHN AINSWORTH and HENRY AINSWORTH, of Preston, in the County of Lan-
caster. "IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention of improvements in looms for weaving has for its object the
providing means in dobby and jacquard mechanism for producing more than one
pattern, heading, or border on the cloth, with only one line or system of lattices or
cards.
According to our Invention in the case of dobby mechanism in which lattices of
the usual construction are employed, and supposing for the sake of illustration that
two patterns are to be produced, the single line of lattices consists of two separate
sets of pegged lags arranged in such a manner that a lag of one set succeeds a lag
of the other set, and so on alternately.
The double lattice is caused at each pick of the loom to move two lags forward
instead of one, as in a single lattice; thus each alternate lag (or, in other words,
the lags of that set only which is to produce the pattern) will be presented to the
"jacks." This may be effected by providing a second catch wheel, the first catch
wheel being rotated in the ordinary manner to the extent of one tooth (corresponding
with the progress of one lag of the lattice) by the forward movement of the dobby
carriage, whilst the second catch wheel is caused to rotate by the return movement
of the carriage, thus causing the double lattice to travel as fast again as an ordinary
single lattice.
One set of lags may be arranged for the plain cloth between the headings, the
other set being for the heading pattern. When it is desired to put in the heading
the lattice is moved one peg forward. This may be effected by simply turning the
lattice or catch wheel one tooth, when the next set of lags will come into action.
When the required number of picks for the heading has been put in the lattice may

page_text: "
be again put forward one lag, and plain cloth produced as before. In weaving
bordered cloths, such as dhooties," the lags of the double lattice may be pegged in
pairs for producing the border, so that if the lattice be put one lag forward the
weaving of the border pattern will not be interfered with, both sets of lattices being
pegged alike as respects the borders.
It will be evident that the same alternate arrangement of "sets " is equally avail-
able for perforated cards and "needles" as for pegged lattices and "jacks" as above
described, and that when required the line of lattices or cards may consist of more
than two sets, in which case the travelling speed of the lattice or cards may be
regulated by change wheels or other suitable mechanisın.
By our improved arrangement cloth may also be produced having a different
pattern for each border in such a manner that when one half of the scarf or piece
has been woven the pattern which was produced at the right hand side of the piece
may be produced at the left hand side, and vice versa, by moving the lattice one peg
as herein before mentioned.
.
Our Invention is especially applicable for weaving handkerchiefs, quilts, table
cloths, or other fabrics in which a repeating pattern is produced between figured
cross headings.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Ainsworth and Henry Ainsworth in the Great Seal Patent
Office on the 30th October 1879.
JOHN AINSWORTH and HENRY AINSWORTH, of Preston, in the County of Lan-
"IMPROVEMENTS IN LOOMS FOR WEAVING."
caster.
This Invention of improvements in looms for weaving has for its object the
providing means in dobby and "jacquard " mechanism for producing more than
one pattern, heading, or border on the cloth, with only one line or system of lattices
or cards.
According to our Invention in the case of dobby mechanism, in which lattices of
the usual construction are employed, and supposing for the sake of illustration that
two patterns are to be produced the single line of lattice consists of two separate
sets of pegged lags arranged in such a manner that a lag of one set succeeds a lag
of the other set, and so on alternately. The double lattice is caused at each pick
of the loom to move two lags forward instead of one, as in a single lattice; thus
each alternate lag (or, in other words, the lags of that set only which is to produce
the pattern) will be presented to the jacks. This may be effected by providing a
second catch wheel, the first catch wheel being rotated in the ordinary manner to
the extent of one tooth (corresponding with the progress of one lag of the lattice)
by the forward movement of the dobby carriage, whilst the second catch wheel is
caused to rotate by the return movement of the carriage, thus causing the double
lattice to travel as fast again as an ordinary single lattice. One set of lags may be
arranged for the plain cloth between the headings and for a figured pattern at the
sides, the other set being for the heading pattern; this arrangement being more
particularly applicable to cloths, such as dhooties," having figured borders, in
which case, by our Invention, figured headings may be put in similar to the borders.
When it is desired to put in the heading the lattice is moved one lag forward.
This may be effected by simply turning the lattice or catch wheel one tooth, when
the next set of lags will come into action. When the required number of picks
for the heading have been put in the lattice may be again put forward one lag and
plain cloth produced as before. In weaving bordered cloths, such as dhooties,"
the lags of the double lattice may be pegged in pairs for producing the borders, so
that if the lattice be put one lag forward the weaving of the border pattern will
not be interfered with, both sets of lattices being pegged alike as respects the
borders.
"
"
It will be evident that the same alternate arrangement of sets is equally avail-
able for perforated cards and needles as for pegged lattices and "jacks" as above
described, and that when required the line of lattices or cards may consist of more
than two sets, in which case the travelling speed of the lattice or cards may be
regulated by change wheels or other suitable mechanism.
In the accompanying Drawings Figs. 1 and 2 are respectively side and end views,
shewing the application of our Invention to a Willan and Mills "double lift" dobby,
constructed according to the Specification of Letters Patent, No. 1389, A.D. 1878,
granted to the within-named John Ainsworth. In this arrangement of apparatus
the lattice is divided into two halves A, A¹, one half acting upon the knife B and
jacks C, the other half acting upon the knife B' and jacks C¹. The two portions of
the divided lattice as above described acting in combination answer the same end in
producing the pattern as an ordinary single lattice or line of perforated cards. Dis
the ordinary catch wheel, and E the lattice barrel rotated to the extent of one tooth
by the catch F at each movement to the right of the dobby carriage M, a corre-
sponding rotation being communicated through the medium of the toothed wheels
N, N, to the barrel E. In adapting our improved double lattice to this arrange-
ment of apparatus we employ the additional catch-wheel D¹ and catch F¹, so that
the barrels E, E¹, will be rotated to the extent of one tooth of the catch wheel upon

page_text: the dobby carriage being moved in one direction as well as in the other. Thus the
lattice will be (caused to travel as fast again as when only one catch wheel was
employed, and therefore to present only the pegs of each alternate lag of the lattices
A, A¹, to the jacks C, C'.
Although we have described only one mode of actuating or accelerating the speed
of a lattice embodying more than one set or pattern, it will be evident that
arrangements other than a double catch wheel may be employed for the purpose, as,
for instance, change wheels or other mechanical devices.
By our improved arrangement cloth may also be produced having a different
pattern for each border in such a manner that when one half of the scarf or piece
has been woven the pattern which was produced on the right hand side of the piece
may be produced at the left hand side, and vice versa, by moving the lattice one
peg, as herein before mentioned.
Our Invention is especially applicable for weaving handkerchiefs, quilts, table
cloths, or other fabrics in which a repeating pattern is produced between figured
cross headings.
Seamless bags may also be produced by means of our Invention by arranging one
set of lags and pegs of a double lattice to weave the cloth in two folds.
The edges
of the two folds will be joined by the passing of the weft from the shed forming
one of the folds to the shed forming the other fold, and so on alternately. The
second set of lags is so arranged that the healds will cause the ends forming the
top and bottom folds to be woven together, thereby producing plain cloth. The
plain cloth set of lags is brought into action at suitable intervals (by moving the
catch wheel forward one tooth as above-named) to form the bottoms of the bags.
Having described the nature of our said Invention, and explained in what
manner the same is to be or may be performed or carried into practical effect, we
would have it understood that what we consider to be novel and original, and there-
fore claim as secured to us under the Letters Patent herein before in part recited
is, the use or employment of two (or more) sets of lattices working in a single line
or system, substantially as and for the purposes hereinbefore described and set
forth.
In witness whereof, we, the said John Ainsworth and Henry Ainsworth, have
hereunto set our hands and seals, this Twenty-ninth day of October, in the
year of our Lord One thousand eight hundred and seventy nine.